mechanical standrad

Western MichiganUniversity

Physical Plant

Facility Standards

Division 15:Mechanical

Compiled October 10, 2000

10/16/00 1

SECTION 15000 - GENERAL

GENERAL PROVISIONS

The information presented herein for the Mechanical Section of the University Standards is,with few exceptions, the Mechanical Specification in its entirety.

It is presented in CSI format to provide guidance to the design professional during customarydesign activity for University projects. It is not intended for these standards to be copied andinserted as design specifications. Design professionals shall prepare the appropriatespecifications applicable to each project.

Consultation with the University is encouraged for clarifications, equipment not included instandards but that may be required for a specific project, and for general information.

10/16/002

SECTION 15010 - BASIC MECHANICAL REQUIREMENTS

THIS SECTION USES THE TERM "ARCHITECT." CHANGE THIS TERM ASNECESSARY TO MATCH THE ACTUAL TERM USED TO IDENTIFYDESIGN PROFESSIONAL AS DEFINED IN THE GENERAL ANDSUPPLEMENTARY CONDITIONS.

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of contract, including general and supplementarycondition and Division I specifications, apply to all Division 15 sections.

1.2 SUMMARY

A. This Section includes general administrative and procedural requirements formechanical installations.

1. Submittals.2. Coordination drawings.3. Record documents.4. Maintenance manuals.5. Mechanical installations.

B. Related Sections: The following sections contain requirements that relate to thissection:

1. Division 15 Section "ELECTRICAL REQUIREMENTS FORMECHANICAL EQUIPMENT," for factory-installed motors, controllers,accessories, and connections.

2. Division 15 Section "BASIC MECHANICAL MATERIALS ANDMETHODS," for materials and methods common to the remainder ofDivision 15,

1.3 CODES AND STANDARDS

A. Code Compliance: Comply with all applicable codes pertaining to productmaterials and installations and any codes and standards referred to within individualspec sections.

1.4 SUBMITTALS

A. General: Product Data - 3 copies required

15010 - BASIC MECHANICAL REQUIREMENTS

10/16/00 3

Shop Drawings - 3 copies required Samples - as requested

B. Additional copies may be required by individual sections of these Specifications.

1.5 COORDINATION DRAWINGSA. Normally not required; Discretion of Design Professional.

1.6 RECORD DOCUMENTS

A. Provide one, reproducible set and electronic copy of "as-built" drawings.

1.7 MAINTENANCE MANUALSA. Provide 3 copies of maintenance manuals. Include the following

information:

1. Description of function, normal operating characteristics and limitations,performance curves, engineering data and tests, and complete nomenclatureand commercial numbers of replacement parts.

2. Manufacturer's printed operating procedures to include start-up, break-in,and routine and normal operating instructions; regulation, control, stopping,shutdown, and emergency instructions; and summer and winter operatinginstructions.

3. Maintenance procedures and recommended frequencies for routinepreventive maintenance and troubleshooting; disassembly, repair, andreassemble; aligning and adjusting instructions.

4. Servicing instructions and lubrication charts and schedules.

1.8 DELIVERY, STORAGE, AND HANDLING

A. Deliver products to the project properly identified with names, model numbers,types, grades, compliance labels, and other information needed for identification.

1.9 WARRANTIES

A. Provide three copies. Separate of all warranties/guarantees in maintenancemanuals.

PART 2 - PRODUCTS (NOT APPLICABLE)

PART 3 - EXECUTION

3.1 MECHANICAL INSTALLATIONS

15010 BASIC MECHANICAL REQUIREMENTS

10/16/004

A. General1. Coordinate mechanical systems, equipment, and materials installation with

other building components.2. Verify all dimensions including field measurements, if necessary.3. Arrange for chases, slots, and openings in other building components, to

allow for mechanical installations.4. Coordinate the locations of required supporting devices and sleeves to be set

in poured-in-place concrete and other structural components.5. Provide maximum headroom wherever possible.6. Coordinate connection of mechanical systems with exterior underground

and overhead utilities and services. Comply with requirements of governingregulations, franchised service companies, and controlling agencies.Provide required connection for each service.

7. Install systems, materials, and equipment to conform with approvedsubmittal data, and arrangements shown on documents, to greatest extentpossible.

8. Systems, materials, and equipment to be level and plumb, parallel andperpendicular to other building systems and components,

9. Install mechanical equipment to facilitate servicing, maintenance, and repairor replacement of equipment components. Extend grease fittings to anaccessible location.

10. Provide access panel or doors where units are concealed behind finishedsurfaces. Access doors shall be required for service of any concealed devicesuch as fire dampers, valves, VAV boxes, fans, controls, and coils. As muchas practical, locate these devices in readily accessible locations.

11. General Locations and Arrangements: Drawings (plans, schematics, and diagrams) to indicate general location and arrangement of the systems in a diagrammatic form only, unless otherwise needed. So far as practical, install sy

END OF SECTION 15010

10/16/00 5

SECTION 15030 - ELECTRICAL REQUIREMENTS FORMECHANICAL EQUIPMENT

PART 1 - GENERAL

1.1 RELATED DOCUMENTS:

A. Related Sections: Separate electrical components and materials required for fieldinstallation and electrical connections are specified in Division 16.

1.2 SUMMARY:

A.This section specifies the basic requirements for electrical components which are anintegral part of packaged mechanical equipment. These components include, butare not limited to factory installed motors, starters, and disconnect switchesfurnished as an integral part of packaged mechanical equipment. This sectionspecifies the basic requirements for electrical components for all mechanicalequipment. These components include, but are not limited to, motors, starters andcontactors. Furnish all motors, starters, and contactors as required for proper operationof mechanical equipment. Electrical components that are an integral part of packagedmechanical equipment shall be factory installed and wired.

B. Specific electrical requirements (i.e. horsepower and electrical characteristics) formechanical equipment are specified within the individual equipment specificationsections and/ or scheduled on the drawings.

1.3 REFERENCES:

A. NEMA Standards MG 1: Motors and Generators

B. NEMA Standard ICS 2: Industrial Control Devices, Controllers, and Assemblies.

C. NEMA Standard 250: Enclosures for Electrical Equipment

D. NEMA Standard KS 1: Enclosed Switches

E. Comply with National Electrical Code (NFPA 70).

F. NRTL Listing: Provide NRTL motors.

1.4 SUBMITTALS:

15030 ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT

10/16/006

A. No separate submittal is required. Submit product data for motors, starters, andother electrical components with submittal data required for the equipment forwhich it serves, as required by the individual equipment specification sections.

1.5 QUALITY ASSURANCE:

A. Electrical components and materials shall be UL labeled.

PART 2 - PRODUCTS

2.1 MOTORS:

A. The following are basic requirements for common motors. For special motors,more detailed and specific requirements are specified in the individual equipmentspecifications.

1. Torque characteristics shall be sufficient to satisfactorily accelerate thedriven loads.

2. Motor sizes shall be large enough so that the driven load will not require themotor to operate in the service factor range.

3. 2-speed motors shall have 2 separate windings on poly-phase motors.4. Temperature Rating: Rated for 40 deg. C environment with maximum 50

deg. C temperature rise for continuous duty at full load (Class A Insulation).5. Starting capability: frequency of starts as indicated by automatic control

system, and not less than 5 evenly time spaced starts per hour for manuallycontrolled motors.

6. Service Factor: 1.15 for poly-phase motors and 1.35 for single phasemotors.

7. Motor construction: NEMA Standard MG 1, general purpose, continuousduty, Design "B", except "C" where required for high starting torque.a. Frames: NEMA Standard No. 48 or 54; use driven equipment

manufacturer's standards to suit specific application.b. Bearings:

1) ball or roller bearings with inner and outer shaft seals;2) re-greasable, except permanently sealed where motor is

normally inaccessible for regular maintenance;3) designed to resist thrust loading where belt drives or other drives

produce lateral or axial thrust in motor;4) for fractional horsepower, light duty motors, sleeve type

bearings are permitted.c. Enclosure Type:

1) open drip-proof motors for indoor use where satisfactorilyhoused or remotely located during operation;

2) guarded drip-proof motors where exposed to contact byemployees or building occupants;

15030 - ELECTRICAL REQUIREMENTS FOR MECHANICAL EQUIPMENT

10/16/00 7

3) weather protected Type I for outdoor use, Type II where nothoused;

4) totally enclosed fan cooled (TEFC) where motor is in the airstream;

d. Overload protection: built-in thermal overload protection and, whereindicated, internal sensing device suitable for signaling and stoppingmotor at starter.

e. Noise rating: "Quiet"f. Noise rating: "Quiet" rating on motors located in occupied spaces of

building.g. Efficiency: "Energy Efficient" motors shall have a minimum

efficiency as scheduled in accordance with IEEE Standard 112, testmethod B. If efficiency not specified, motors shall have a higherefficiency than "average standard industry motors", in accordance withIEEE Standard 112, test method B.

h. Nameplate: Indicate the full identification of manufacturer, ratings,characteristics, construction, special features and similar information.

8. Variable speed motors for use with Solid State Drives: Energy Efficient squirrel-cage induction type, Design 2 unit with ratings and features coordinated with and approved by drive manufacturer.

2.2 STARTERS, DISCONNECT SWITCHES AND WIRING

A. Refer to Division 16.

PART 3 - EXECUTION (Not Applicable)


10/16/008

SECTION 15050 - BASIC MECHANICAL MATERIALS ANDMETHODS

THIS SECTION USES THE TERM "ARCHITECT." CHANGE THIS TERM AS NECESSARY TO MATCHTHE ACTUAL TERM USED TO IDENTIFY DESIGN PROFESSIONAL AS DEFINED IN THE GENERALAND SUPPLEMENTARY CONDITIONS.

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes limited scope general construction materials and methods forapplication with mechanical installations as follows:

1. Mechanical equipment nameplate data.2. Selective demolition including:

a. Nondestructive removal of materials and equipment for reuse orsalvage as indicated.

b. Dismantling mechanical materials and equipment made obsolete bythese installations.

3. Excavation for underground utilities and services, including undergroundpiping (under the building and from building to utility connection), tanks,basins, and equipment.

4. Miscellaneous metals for support of mechanical materials and equipment.5. Wood grounds, nailers, blocking, fasteners, and anchorage for support of

mechanical materials and equipment.6. Joint sealers for sealing around mechanical materials and equipment; and for

sealing penetrations in fire and smoke barriers, floors, and foundation walls.7. Access panels and doors in walls, ceilings, and floors for access to

mechanical materials and equipment.

B. Requirements specified in Division 15 section “Basic MechanicalRequirements” apply to this section.

1.2 DEFINITIONS

A. The following definitions apply to excavation operations:

1. Additional Excavation: Where excavation has reached required subgradeelevations, if unsuitable bearing materials are encountered, continueexcavation until suitable bearing materials are reached. The Contract Summay be adjusted by an appropriate Contract Modification.

2. Subbase: as used in this Section refers to the compacted soil layer used inpavement systems between the subgrade and the pavement base coursematerial.

15050 BASIC MECHANICAL MATERIALS AND METHODS

10/16/00 9

3. Subgrade: as used in this Section refers to the compacted soil immediatelybelow the slab or pavement system.

4. Unauthorized excavation consists of removal of materials beyond indicatedsubgrade elevations or dimensions without specific direction from the ownerand design professional.

1.3 SUBMITTALS

A. Product data for the following products:

1. Access panels and doors.2. Joint sealers.

B. Shop drawings detailing fabrication and installation for metal fabrications, andwood supports and anchorage for mechanical materials and equipment, if identifiedas required.

C. Coordination drawings for access panel and door locations in accordance withDivision 15 Section "Basic Mechanical Requirements", if identified as required.

D. Samples of joint sealer, consisting of strips of actual products showing full range ofcolors available for each product.

F. Schedules indicating proposed methods and sequence of operations for selectivedemolition prior to commencement of Work. Include coordination for shut-offutility services and details for dust and noise control.

1. Coordinate sequencing with construction phasing and Owner.

1.4 QUALITY ASSURANCE

A. Installer Qualifications: Engage an experienced Installer for the installation andapplication joint sealers, access panels, and doors.

B. Qualify welding processes and welding operators in accordance with AWS D1.1"Structural Welding Code - Steel."

1. Certify that each welder has satisfactorily passed AWS qualification testsfor welding processes involved and, if pertinent, has undergonerecertification. Records shall be maintained by contractor and available forreview.

C. Fire-Resistance Ratings: Where a fire-resistance classification is indicated, provideaccess door assembly with panel door, frame, hinge, and latch from manufacturerlisted in the UL "Building Materials Directory" for rating shown.

1. Provide UL Label on each fire-rated access door.


10/16/0010


A. Deliver joint sealer materials in original unopened containers or bundles with labelsinforming about manufacturer, product name and designation, color, expirationperiod for use, pot life, curing time, and mixing instructions for multi-componentmaterials.

B. Store and handle joint sealer materials in compliance with the manufacturers'recommendations to prevent their deterioration and damage.

1.6 PROJECT CONDITIONS

A. Conditions Affecting Selective Demolition: The following project conditionsapply:

1. Protect adjacent materials indicated to remain. Install and maintain dust andnoise barriers to keep dirt, dust, and noise from being transmitted to adjacentareas. Remove protection and barriers after demolition operations arecomplete.

2. Locate, identify, and protect mechanical services passing throughdemolition area and serving other areas outside the demolition limits.Maintain services to areas outside demolition limits. When services must beinterrupted, install temporary services for affected areas.

B. Conditions Affecting Excavations: The following project conditions apply:

1. Maintain and protect existing building services which transit the areaaffected by selective demolition.

2. Protect structures, utilities, sidewalks, pavements, and other facilities fromdamage caused by settlement, lateral movement, undermining, washout, andother hazards created by excavation operations.

3. Existing Utilities: Locate existing underground utilities in excavation areas.If utilities are indicated to remain, support and protect services duringexcavation operations.

4. Remove existing underground utilities indicated to be removed.a. Uncharted or Incorrectly Charted Utilities: Contact utility owner

immediately for instructions.b. Provide temporary utility services to affected areas. Provide minimum

of 48-hour notice to owner prior to utility interruption.5. Use of explosives is not permitted.

C. Environmental Conditions: Apply joint sealers under temperature and humidityconditions within the limits permitted by the joint sealer manufacturer. Do notapply joint sealers to wet substrates.

1.8 SEQUENCE AND SCHEDULING


10/16/00 11

A. Coordinate the shut-off and disconnection of utility services with the Owner and theutility company.

B. Notify the owner at least 5 days prior to commencing demolition operations.

C. Perform demolition in phases as determined in conjunction with owner.

PART 2 - PRODUCTS

2.1 MECHANICAL EQUIPMENT NAMEPLATE DATA

A. Nameplate: For each piece of power operated mechanical equipment, provide apermanent operational data nameplate indicating manufacturer, product name,model number, serial number, capacity, operating and power characteristics, labelsof tested compliances, and similar essential data. Locate nameplates in anaccessible location.

2.2 SOIL MATERIALS

A. See division 5.

2.3 MISCELLANEOUS METALS

A. Steel plates, shapes, bars, and bar grating: ASTM A 36.

B. Cold-Formed Steel Tubing: ASTM A 500.

C. Hot-Rolled Steel Tubing: ASTM A 501.

D. Steel Pipe: ASTM A 53, Schedule 40, welded.

E. Nonshrink, Nonmetallic Grout: Premixed, factory-packaged, nonstaining,noncorrosive, nongaseous grout, recommended for interior and exteriorapplications.

F. Fasteners: Zinc-coated, type, grade, and class as required.

2.4 MISCELLANEOUS LUMBER

A. See Division 6.

B. Construction Panels: Plywood panels; APA C-D PLUGGED INT, with exteriorglue; thickness as indicated, or if not indicated, not less than 15/32 inches.

2.5 JOINT SEALERS


10/16/0012

A. Refer to Section 07900.

2.6 ACCESS DOORSA. Refer to section 08305.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates, areas, and conditions, with Installer present, for compliancewith requirements for installation tolerances and other conditions affectinginstallation and application of joint sealers and access panels. Do not proceed withinstallation until unsatisfactory conditions have been corrected.

3.2 PREPARATION FOR JOINT SEALERS

A. Refer to 07900.

3.3 SELECTIVE DEMOLITION

A. General: Demolish, remove, demount, and disconnect abandoned mechanicalmaterials and equipment indicated to be removed and not indicated to be salvagedor saved.

B. Materials and Equipment To Be Salvaged: Remove, demount, and disconnectexisting mechanical materials and equipment indicated to be removed and salvaged,and deliver materials and equipment to the location designated for storage.

C. Disposal and Cleanup: Remove from the site and legally dispose of demolishedmaterials and equipment not indicated to be salvaged.

D. Mechanical Materials and Equipment: Demolish, remove, demount, and disconnectthe following items:

1. Inactive and obsolete piping, fittings and specialties, equipment, ductwork,controls, fixtures, and insulation.a. Piping and ducts embedded in floors, walls, and ceilings may remain if

such materials do not interfere with new installations. Removematerials above accessible ceilings. Drain and cap piping and ductsallowed to remain.

2. Perform cutting and patching required for demolition in accordance withDivision 1 Section "Cutting and Patching."

3.4 EXCAVATION


10/16/00 13


3.5 ERECTION OF METAL SUPPORTS AND ANCHORAGE


3.6 ERECTION OF WOOD SUPPORTS AND ANCHORAGE


3.7 APPLICATION OF JOINT SEALERS

A. Refer to Section 08305


10/16/0014

SECTION 15055 – BASIC PIPING MATERIAL ANDMETHODS

PART 1 GENERAL

DESIGN GUIDELINESPiping shall be run parallel or at right angel to walls in the most direct and straight manner possible. All pipingshall be properly graded.

Piping shall not project beyond walls or steel lines nor shall it hang below slabs more than is absolutelynecessary. Particular attention shall be paid to the required clearances.

Offset piping where required to avoid interferance with other work, to provide greater headroom or clearance,or to conceal pipe more readily. Offsets shall be properly drained or trapped where necessary.

Provide swing joints and expansion bends wherever required to allow the piping to expand without undue stressto connections or equipment.

All piping in finished rooms shall be run concealed.

Exposed piping around fixtures or in other conspicuous places shall not show tool marks nor threads at fittings.

Isolate pipe from the building construction to prevent transmission of vibration to the structure and to eliminatenoise.

Install piping such that any equipment connected to piping may be removed by disconnecting two (2) flangesor unions and removing only one or two pipe sections. All equipment shall have bolted or screwed flanges orunions at pipe connections.

Unions or flanges shall be used at all final connections preceded by valve; at all connections ot fixtures, pumps,and equipment; and at control valves.

Unions shall be used in preference to couplings where their use will facilitate dismantling the pipe formaintenance.

Eccentric reducing couplings shall be provided in all cases where air or water pockets would otherwise occurdue to a reduction in pipe size.

Eccentric couplings shall make the pipe flush on the bottom for steam lines and flush on the top for water lines.

Grooved pipe is not used except for larger size potable water supply and fire protection.

Weld pipe ends need to be properly beveled to permit butt-welding.

Provide dielectric unions when connecting copper pipe to different metals.

Provide strainers ahead of control valves and pressure regulating valves except for fin tube and convectors.

Provide blow down valves on strainers.

Install low point drains and high point vents in, mains, risers and branch lines. Automatic vents are not to beused except at expansion tanks. Provide a tee fitting with nipple, ¾” bell valve and capped hose connection.

15055 BASIC PIPING MATERIAL AND METHODS

10/16/00 15

Utilize steel pipe sleeves wherever pipes pass through building construction.

Below grade wells and slabs on grades need to have the spare between the sleeve and pipe sealed watertight.

Pipes passing through above grade slabs and walls shall need to be sealed with non-switching, non-asbestos,non-combustible material.

Use well neck type flanges and install true and perpendicular to axis of pipe.

Use long sweep elbows whenever possible, mitred elbows not acceptable.

PERORMANCE STANDARDS

All welding to conform to ASME welding code and standard ANSI B 31.1.

Welder certification not normally required unless working on high pressure applications (greater than 100psi).Welders must have experience in the type of work being done and if not competent can be dismissed in opinionof design professional or owner.

Gaskets for Flanged Feces shall be raised face for steel and full face for cast iron. Use semi metallic gasketsand replace whenever joint is broken.

Use threaded connections for steel pipe 2” and smaller; welded for 2 ½ and larger.

Install flanges in piping 2 ½” and larger when connecting to valves and equipment.

For copper tube and fitting braze joints in accordance with ANSI B 31.1 and ANSI B 9.1 as applicable.

PART 2 PRODUCTS

PRODUCT DESCRIPTION

Steel Piping – Black, welded and seamless carbon steel with schedule appropiate for service ASTM A-53 for 2”and larger.

Galvanized Piping – hot dipped inside and out in accordance with ASTM B-6 using 2 ounces of zinc per squarefoot.

Threaded Fittings: malleable iron, black or galvanized as required for service. Malleable iron to conform toASTM A 197. Malleable iron fittings to conform to ANSI B 16.3, 150lb rating.

Unions: brass to iron, ground joint seat, class 150.

Welding Fittings: 150lb rating conforming to ASTM 234 , Grade WPB forged steel with standard manufacturertrade marks, Last code, grade, ect.; dimensions to conform to ANSI B 16.9.

Welding Flanges: 150lb rating, ASTM A181, Grade 1 steel with dimensions conforming to ANSI 16.5.

Copper Pipe and Fitting: hard drawn, type cork pipe to conform to ASTM B88. Fitting to be soldered joint,wrought copper conforming to ANSI B16.22.

Solder: 985/5 tin-copper , lead free suitable for operating temp of 300 F conforming to ASTM B-32.

Gaskets: 900lb some metallic, 1/16 inch minimum thickness.

Strainers: full line size, cast iron body for threaded and flanged connections, schedule 40 steel body for weldedconnections, 125lb rating, threaded or bolted screen retainer, stainless steel strainer with 3/64 inch perforations.

15055 BASIC PIPING MATERIAL AND METHODS

10/16/0016

Sleeve Seals: Interlocking synthetic rubber links connected with bolts and pressure plates to create water tightseal.

ACCEPTABLE MANUFACTURERS

Mechanical Sleeve Seals: Thunderline Corp. – Link Seal

Strainers: Armstrong, Watts, Metraflex, Hoffman ITT

3. Dielectric Unions: Eclipse Inc., Perfection Co., Watts

10/16/00 17

SECTION 15100 – VALVES

PART 1 GENERAL

1.1 DESIGN GUIDELINES

1. Install valves at all service connections, branch lines and risers.

2. Use ball and butterfly valves for hydronic and water service; use gate and globe valve for steam andcondensate service only.

3. Provide extended stems where installation is required.

4. Provide valve and unions on each fixture and piece of equipment to allow removal without system shutdown; unions not required for flanged connections.

5. Operators: Handwheels fastened to stem for valves other than quarter turn lever handles on quarterturn valves up, not including, 6 inch Gear operators on quarter turn valves 6 inch and larger.

6. Valve Ends: for copper tube size 2 inch and smaller – soldered for steel pipe 2 inch and smaller –threaded for steel pipe 2 ½ inch and larger – flanged.

7. Applications: use butterfly, ball and gate valves for shutoff; ball or globe for throttling; butterflyvalves may be used for balancing downstream of flow measuring devices.

8. Install swing check valves in proper direction of flow, horizontal with hinge pin level.

1.2 PERFORMANCE STANDARDS

1. Valve stem packing to be suitable for intended service and tight under conditions of actual service.

2. Gate valve to have rising stem or rising outside screw and yoke stems.

3. End Connections: threads: comply with ANSI B1.20 1. Flanges: comply with ANSI B16.1 for castiron; ANSI B16.5 for steel.

PART 2 PRODUCTS

2.1 PRODUCT DESCRIPTION

1. Gate Valves - 2 inch and smaller: ASTM B62, class 125 body, bonnet and union ring with threadedends, solid disc, copper silicon stem and malleable iron handwheel.

2. Gate Valves – 2 ½ inch and larger: ASTM A126, class 125 cast iron body, bolted bonnet, OS&Ysolid wedge disc, bronze trim with flanged ends.

3. Ball Valves – 2 inch and smaller: ASTM B62, 400psi WOG pressure, bronze body, full port, stainlesssteel ball, replaceable “TFE” seats and seal, blowout proof stem and vinyl covered handle.

4. Butterfly Valves – 2 ½ inch and larger: 200 psi WOG ductile iron bodies, lug style, bronze disc,EPDM seats, stainless steel stem.

15100 VALVES

10/16/0018

5. Globe Valves – 2 inch and smaller: ASTM B62, class 150 bronze body, copper-nickel alloy disc,teflon impregnated packing, copper-silicon alloy stem and malleable iron wheel.

6. Globe Valves – 2 ½ and larger: ASTM A126, class 125 iron body, bronze disc, teflon impregnatedpacking, copper-silicon alloy stem.

7. Swing Check Valves – 2 inch and smaller: ASTM B61, class 150 bronze body, disc and cap, y patternwith threaded ends.

8. Swing Check Valves – 2 ½ and larger: ASTM A126, class 125 cast iron body and cap, renewablebronze disc and seat rings, flanged ends.

9. Vertical Check Valve – on pump discharge

2.2 ACCEPTABLE MANUFACTURERS

1. Gate, Globe and Swing Check Valves: Grinnell, Stockham, Jenkins

2. Ball Valves: Hammond, Powell, Grinnell

3. Butterfly Valves: Lunkenheimer, Grinnell, Jenkins

4. Vertical Check Valve:

5. Packing: Crane, Garlock, or equal

10/16/2000

SECTION 15125 - PIPE EXPANSION JOINTS

PART 1 - GENERAL


A. Requirements of the following Division 15 Sections apply to this section:

1. "Basic Mechanical Requirements."2. "Basic Mechanical Materials and Methods."3. "Basic Piping Materials and Methods."

B. This Section includes the following:

1. Packless expansion joints and compensators.

C. Related Sections: The following sections contain requirements that relate to thissection:

1. Division 15 Section "Supports and Anchors" for pipe alignment guides andanchors.

2. Division 15 Section "Vibration Control" for flexible pipe connectors.

1.2 SUBMITTALS

A. General: Submit the following:

1. Product data, three copies required, for each type of pipe expansion jointspecified. Submit expansion compensation schedule showingManufacturer's figure number, size, location, and features for each requiredexpansion joint.

2. Assembly-type shop drawings, three copies required, for each type ofexpansion compensation product, indicating dimensions, weights, requiredclearances, and methods of assembly of components.

3. Maintenance data for expansion joints for inclusion in Operating andMaintenance.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by oneof the following:

1. Packless Expansion Compensators:

15125 PIPE EXPANSION JOINTS

10/16/0020

a. Flexonics Inc., Metal Hose and Expansion Joint Div.b. Keflex HVAC Products, Flex-Weld, Inc.c. Metraflex Co.

2. Packless Rubber Expansion Joints:a. Keflex HVAC Products Div., Flex-Weld, Inc.b. Mason Industries, Inc.c. Metraflex Co.

2.2 PIPE EXPANSION JOINTS, GENERAL

A. Pipe expansion joints shall provide 200 percent absorption capacity of pipingexpansion between anchors.

2.3 PACKLESS EXPANSION JOINTS

A. Expansion Compensators: Conform to the standards of the Expansion JointManufacturers Association and shall be pressure rated for 60 psi for low-pressuresystems and for 175 psi for high-pressure systems. Units shall have 2-ply phosphorbronze bellows, brass shrouds, and end fittings for copper piping systems and 2-plystainless steel bellows, carbon steel shrouds, and end fittings for steel pipingsystems. Expansion compensators shall have internal guides and antitorque deviceand removable end clip for proper positioning.

B. Rubber Expansion Joints: Fabric-reinforced butyl rubber with full-faced integralflanges, external control rods and shall be internally reinforced with steel retainingrings over entire surface of flanges, drilled to match flange bolt holes.

PART 3 - EXECUTION

3.1 INSTALLATION, GENERAL

A. Install expansion joints and expansion loops where indicated and required foradequate expansion of installed piping system. Utilize expansion loops wheneverpossible, reserving use of expansion joints to areas of united space.

3.2 EXPANSION JOINTS

A. Install expansion joints in accordance with manufacturer's instructions.

B. Align joints to avoid end loading and torsional stress.

3.3 EXPANSION COMPENSATION FOR RISERS AND TERMINALS

15125 PIPE EXPANSION JOINTS

10/16/00 21

A. Install connection between piping mains and risers with at least 5 pipe fittingsincluding tee in main. Install connections between piping risers and terminal unitswith at least 4 pipe fittings including tee in riser.

3.4 EXPANSION LOOPS

A. Fabricate expansion loops to dimensions indicated and subject loop to cold springtension or compression necessary to absorb 50 percent of the total compression ortension during anticipated change in temperature.


10/16/200022

DRAFTSECTION 15135 - METERS AND GAGES

PART 1 - GENERAL




1.2 SUMMARY

A. This Section includes the following types of meters and gages:

1. Temperature gages and fittings.2. Pressure gages and fittings.3. Flow meters.

B. Meters and gages furnished as part of factory-fabricated equipment are specified aspart of equipment assembly in other Division 15 sections.

1.3 SUBMITTALS


1. Product data, three copies required, for each type of meter and gage.Include scale range, ratings, and calibrated performance curves, certifiedwhere indicated. Submit meter and gage schedule showing manufacturer'sfigure number, scale range, location, and accessories for each meter andgage.

2. Product certificates signed by manufacturers of meters and gages certifyingaccuracies under specified operating conditions and products' compliancewith specified requirements.

3. Maintenance data for each type of meter and gage for inclusion in Operatingand Maintenance Manuals Division 15 Section "Basic MechanicalRequirements."


A. UL Compliance: Comply with applicable UL standards pertaining to meters andgages.

15135 METERS AND GAGES

10/16/00 23

B. ASME and ISA Compliance: Comply with applicable portions of ASME andInstrument Society of America (ISA) standards pertaining to construction andinstallation of meters and gages.

PART 2 - PRODUCTS

DELETE OR ADD TYPES OF METERS AND GAGES BELOW TO FULFILL ACTUALPROJECT REQUIREMENTS.

2.1 MANUFACTURERS


1. Bimetal Dial Thermometers:a. Ashcroft Dresser Industries\Instrument Div.b. Trerice (H.O.) Co.

2. Thermometer Wells: Same as for thermometers.3. Pressure Gages:

a. Ashcroft Dresser Industries\Instrument Div.b. Trerice (H.O.) Co.

4. Pressure Gage Accessories: Same as for pressure gages.5. Venturi-Type Flow Measurement System:

a. Gerand Engineering Co.

2.2 THERMOMETERS, GENERAL

A. Accuracy: Plus or minus 1 percent of range span or plus or minus one scaledivision to maximum of 1.5 percent of range span.

B. Scale range: Temperature ranges for services listed as follows:

1. Domestic Hot Water: 30 to 240 deg with 2-degree scale divisions (0 to 115deg C with 1-degree scale divisions).

2. Domestic Cold Water: 0 to 100 deg F with 2-degree scale divisions (minus18 to 38 deg C with 1-degree scale divisions).

3. Hot Water: 30 to 300 deg with 2-degree scale divisions (0 to 150 deg Cwith 1-degree scale divisions).

4. Condensed Water: 0 to 160 deg F with 2-degree scale divisions (minus 18to 70 deg C with 1-degree scale divisions).

5. Chilled Water: 0 to 100 deg F with 2-degree scale divisions (minus 18 to 38deg C with 1-degree scale divisions).

6. Steam and Condensate: 50 to 400 deg F with 2-degree scale divisions (10 to205 deg C with 1-degree scale divisions).


10/16/0024

2.3 BIMETAL DIAL THERMOMETERS

A. Type: Direct mounted, bimetal, universal angle.

B. Case: Stainless steel, glass lens, 5-inch diameter.

C. Adjustable Joint: Finish to match case, 180-degree adjustment in vertical plane,360-degree adjustment in horizontal plane, with locking device.

D. Element: Bimetal coil.

E. Scale: Satin faced, nonreflective aluminum, permanently etched marking.

F. Stem: Stainless steel for separable socket, length to suit installation.

2.4 THERMOMETER WELLS

A. Thermometer Wells: Brass or stainless steel, pressure rated to match piping systemdesign pressure; with 2-inch extension for insulated piping and threaded cap nutwith chain permanently fastened to well and cap.

2.5 PRESSURE GAGES

A. Type: General use, ASME B40.1, Grade A, phosphor bronze bourdon-tube type,bottom connection.

B. Case: Drawn steel or brass, glass lens, 4-1/2-inches diameter.

C. Connector: Brass, 1/4-inch NPS.

D. Scale: White coated aluminum, with permanently etched markings.

E. Accuracy: Plus or minus 1 percent of range span.

F. Range: Conform to the following:

1. Vacuum: 30 inches Hg to 15 psi.2. All fluids: 2 times operating pressure.

2.6 PRESSURE GAGE ACCESSORIES

A. Syphon: 1/4-inch NPS straight coil constructed of brass tubing with threads oneach end.

B. Snubber: 1/4-inch NPS brass bushing with corrosion-resistant porous metal disc.Disc material shall be suitable for fluid served and rated pressure.


10/16/00 25

2.7 FLOW METERS, GENERAL

A. Flow rate of elements and meters shall be same as connected equipment or system.

2.8 VENTURI-TYPE FLOW ELEMENTS

A. Type: Differential-pressure venturi type, designed for installation in piping.

B. Construction: Bronze or cadmium-plated steel with brass fittings and attached tagwith flow conversion data. Ends shall be threaded for 2 inches and smallerelements and flanged or welded for 2-1/2 inches and larger elements.

C. Flow Meter: Direct Reading 6” diameter meter. Scale to be in GPM appropriate forspecific venturi.

PART 3 - EXECUTION

3.1 THERMOMETERS INSTALLATION

A. Install thermometers in vertical and tilted positions to allow reading by observerstanding on floor.

B. Install in the following locations and elsewhere as indicated:

1. At inlet and outlet of each hydronic zone.2. At inlet and outlet of each hydronic boiler and chiller.3. At inlet and outlet of each hydronic coil in air-handling units and built-up

central systems.4. At inlet and outlet of each hydronic heat exchanger.5. At inlet and outlet of each hydronic heat recovery unit.6. At inlet and outlet of each thermal storage tank.

C. Thermometer Wells: Install in piping tee where thermometers are indicated, invertical position. Fill well with oil or graphite and secure cap.

3.2 INSTALLATION OF PRESSURE GAGES

A. Install pressure gages in piping tee with pressure gage valve, located on pipe atmost readable position.

B. Install in the following locations, and elsewhere as indicated:

1. At suction and discharge of each pump.2. At discharge of each pressure-reducing valve.3. At building water service entrance.4. At chilled water and condenser water inlets and outlets of chillers.


10/16/0026

5. At inlets and outlets of hydronic coils.

C. Pressure Gage Ball Valves: Install in piping tee with snubber. Install syphon inlieu of snubber for steam pressure gages.

3.3 INSTALLATION OF FLOW-MEASURING ELEMENTS AND METERS

A. General: Install flow meters for piping systems located in accessible locations atmost readable position.

B. Locations: Install flow measuring elements and meters in the following locationsand elsewhere as indicated.

1. At discharge of each pump.2. At inlet of each hydronic coil in built-up central systems.

C. Differential-Pressure-Type Flow Elements: Install minimum straight lengths ofpipe upstream and downstream from element as prescribed by the manufacturer'sinstallation instructions.

D. Install connections for attachment to portable flow meters in a readily accessiblelocation.

E. Meters For Use With Flow Elements: Install meters on wall or bracket inaccessible location.

F. Install connections, tubing, and accessories between flow elements and meters asprescribed by the manufacturer's installation instructions.

3.5 ADJUSTING AND CLEANING

A. Adjusting: Adjust faces of meters and gages to proper angle for best visibility.

B. Cleaning: Clean windows of meters and gages and factory-finished surfaces.Replace cracked and broken windows, and repair scratched and marred surfaceswith manufacturer's touch-up paint.

3.6 CONNECTIONS

A. Piping installation requirements are specified in other sections of Division 15. Thedrawings indicate the general arrangement of piping, fittings, and specialties. Thefollowing are specific connection requirements:

1. Install meters and gages piping adjacent to machine to allow servicing andmaintaining of machine.


10/16/00 27


10/16/200028

SECTION 15140 - SUPPORTS AND ANCHORS

PART 1 - GENERAL




1.2 SUMMARY

A. This section includes the following:

1. Horizontal-piping hangers and supports.2. Vertical-piping clamps.3. Hanger-rod attachments.4. Building attachments.5. Saddles and shields.6. Spring hangers and supports.7. Miscellaneous materials.8. Pipe alignment guides.9. Anchors.10. Equipment supports.

B. Related sections: The following sections contain requirements that relate to thissection:

1. Division 15 Section "Pipe Expansion Joints" for expansion joints andexpansion loops.

2. Division 15 Section "Vibration Control" for vibration-isolation hangers andsupports.

3. Division 15 Section "Mechanical Insulation" for pipe insulation.

1.3 DEFINITIONS

A. Terminology used in this section is defined in MSS SP-90.

1.4 SUBMITTALS

A. General: Submit the following, three copies required:

15140 SUPPORTS AND ANCHORS

10/16/00 29

1. Product data, including installation instructions for each type of support andanchor. Submit pipe hanger and support schedule showing Manufacturer'sfigure number, size, location, and features for each required pipe hanger andsupport.

2. Product certificates signed by the manufacturer of hangers and supportscertifying that their products meet the specified requirements.


A. Qualify welding processes and welding operators in accordance with AWS D1.1"Structural Welding Code - Steel."

1. Certify that each welder has satisfactorily passed AWS qualification testsfor welding processes involved and, if pertinent, has undergonerecertification.

B. Qualify welding processes and welding operators in accordance with ASME "Boilerand Pressure Vessel Code," Section IX, "Welding and Brazing Qualifications."

C. Regulatory Requirements: Comply with applicable plumbing codes pertaining toproduct materials and installation of supports and anchors.

D. NFPA Compliance: Hangers and supports shall comply with NFPA standard No.13 when used as a component of a fire protection system.

E. UL and FM Compliance: Hangers, supports, and components shall be listed andlabeled by UL and FM where used for fire protection piping systems.

F. Nationally Recognized Testing Laboratory and NEMA Compliance (NRTL):Hangers, supports, and components shall be listed and labeled by a NRTL whereused for fire protection piping systems. The term "NRTL" shall be as defined inOSHA Regulation 1910.7.

PART 2 - PRODUCTS

2.1 MANUFACTURED UNITS

A. Hangers and support components shall be factory fabricated of materials, design,and manufacturer complying with MSS SP-58.

1. Components shall have galvanized coatings where installed for piping andequipment that will not have field-applied finish.

2. Pipe attachments shall have nonmetallic coating for electrolytic protectionwhere attachments are in direct contact with copper tubing.

B. Thermal Hanger Shield Inserts: 100-psi average compressive strength,waterproofed calcium silicate, encased with a sheet metal shield. Insert and shield


10/16/0030

shall cover entire circumference of the pipe and shall be of length indicated bymanufacturer for pipe size and thickness of insulation.

2.2 MISCELLANEOUS MATERIALS

A. Steel Plates, Shapes, and Bars: ASTM A 36.

B. Cement Grout: Portland cement (ASTM C 150, Type I or Type III) and cleanuniformly graded, natural sand (ASTM C 404, Size No. 2). Mix ratio shall be 1.0part cement to 3.0 parts sand, by volume, with minimum amount of water requiredfor placement and hydration.

C. Pipe Alignment Guides: Factory fabricated, of cast semisteel or heavy fabricatedsteel, consisting of bolted two-section outer cylinder and base with two-sectionguiding spider that bolts tightly to pipe. Length of guides shall be as recommendedby manufacturer to allow indicated travel.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions under which supports and anchors are to beinstalled. Do not proceed with installing until unsatisfactory conditions have beencorrected.

3.2 INSTALLATION OF HANGERS AND SUPPORTS

A. General: Install hangers, supports, clamps and attachments to support pipingproperly from building structure; comply with MSS SP-69 and SP-89. Arrange forgrouping of parallel runs of horizontal piping supported together on field-fabricated,heavy-duty trapeze hangers where possible. Install supports with maximum spacingcomplying with MSS SP-69. Where piping of various sizes is supported togetherby trapeze hangers, space hangers for smallest pipe size or install intermediatesupports for smaller diameter pipe as specified above for individual pipe hangers.

B. Install building attachments within concrete or to structural steel. Spaceattachments within maximum piping span length indicated in MSS SP-69. Installadditional attachments at concentrated loads, including valves, flanges, guides,strainers, expansion joints, and at changes in direction of piping. Install concreteinserts before concrete is placed; fasten insert to forms. Where concrete withcompressive strength less than 2,500 psi is indicated, install reinforcing barsthrough openings at top of inserts.

C. Install hangers and supports complete with necessary inserts, bolts, rods, nuts,washers, and other accessories.


10/16/00 31

D. Field-Fabricated, Heavy-Duty Steel Trapezes: Fabricate from steel shapes selectedfor loads required; weld steel in accordance with AWS D-1.1.

E. Support fire protection systems piping independently from other piping systems.

F. Install hangers and supports to allow controlled movement of piping systems, topermit freedom of movement between pipe anchors, and to facilitate action ofexpansion joints, expansion loops, expansion bends and similar units.

G. Load Distribution: Install hangers and supports so that piping live and dead loadingand stresses from movement will not be transmitted to connected equipment.

H. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes, and sothat maximum pipe deflections allowed by ASME B31.9 Building Services PipingCode is not exceeded.

I. Insulated Piping: Comply with the following installation requirements.1. Clamps: Attach clamps, including spacers (if any), to piping with clamps

projecting through insulation; do not exceed pipe stresses allowed by ASMEB31.9.

2. Saddles: Install protection saddles MSS Type 39 where insulation withoutvapor barrier is indicated. Fill interior voids with segments of insulationthat match adjoining pipe insulation.

3. Shields: Install protective shields MSS Type 40 on cold and chilled waterpiping that has vapor barrier. Shields shall span an arc of 180 degrees andshall have dimensions in inches not less than the following:

NPS LENGTH THICKNESS

1/4 THROUGH 3-1/2 12 0.0484 12 0.0605 & 6 18 0.0608 THROUGH 14 24 0.07516 THROUGH 24 24 0.105

4. Pipes 8 inches and larger shall have wood inserts.5. Insert material shall be at least as long as the protective shield.6. Thermal Hanger Shields: Install where indicated, with insulation of same

thickness as piping.

3.3 INSTALLATION OF ANCHORS

A. Install anchors at proper locations to prevent stresses from exceeding thosepermitted by ASME B31.9 and to prevent transfer of loading and stresses toconnected equipment.

B. Fabricate and install anchors by welding steel shapes, plates, and bars to piping andto structure. Comply with ASME B31.9 and with AWS Standards D1.1.


10/16/0032

C. Where expansion compensators are indicated, install anchors in accordance withexpansion unit manufacturer's written instructions to control movement tocompensators.

D. Anchor Spacings: Where not otherwise indicated, install anchors at ends ofprincipal pipe runs, at intermediate points in pipe runs between expansion loops andbends. Make provisions for preset of anchors as required to accommodate bothexpansion and contraction of piping.

3.4 INSTALLATION OF PIPE ALIGNMENT GUIDES

A. Install pipe alignment guides on piping that adjoins expansion joints and elsewhereas indicated.

B. Anchor to building substrate.

3.5 EQUIPMENT SUPPORTS

A. Fabricate structural steel stands to suspend equipment from structure above orsupport equipment above floor.

B. Grouting: Place grout under supports for piping and equipment.

3.6 METAL FABRICATION

A. Cut, drill, and fit miscellaneous metal fabrications for pipe anchors and equipmentsupports. Install and align fabricated anchors in indicated locations.

B. Fit exposed connections together to form hairline joints. Field weld connectionsthat cannot be shop welded because of shipping size limitations.

C. Field Welding: Comply with AWS D1.1 for procedures of manual shielded metal-arc welding, appearance and quality of welds made, methods used in correctingwelding work, and the following:

1. Use materials and methods that minimize distortion and develop strengthand corrosion resistance of base metals.

2. Obtain fusion without undercut or overlap.3. Remove welding flux immediately.4. Finish welds at exposed connections so that no roughness shows after

finishing, and so that contours welded surfaces to match adjacent contours.

3.7 ADJUSTING

A. Hanger Adjustment: Adjust hangers to distribute loads equally on attachments andto achieve indicated slope of pipe.


10/16/00 33

B. Touch-Up Painting: Immediately after erection of anchors and supports, clean fieldwelds and abraded areas of shop paint and paint exposed areas with same materialas used for shop painting to comply with SSPC-PA-1 requirements for touch-up offield-painted surfaces.

1. Apply by brush or spray to provide a minimum dry film thickness of 2.0mils.

C. For galvanized surfaces, clean welds, bolted connections, and abraded areas, andapply galvanizing repair paint to comply with ASTM A 780.

3.8 HANGER SPACING

A. Pipe hangers shall be spaced as follows, unless otherwise indicated, and shall beprovided with the minimum rod sizes shown, complete with all the necessaryadjusting and lock-nuts.

PIPE SIZE HANGER SPACING ROD DIAMETER

MAXIMUM MINIMUM

½” to 1-1/4” 8 feet 3/8 inch

1-1/2” to 2” 10 feet 3/8 inch

2-1/2” to 3-1/2” 12 feet ½ inch

4” to 5” 14 feet 5/8 inch

6” 14 feet ¾ inch

8” and above 16 feet 7/8 inch


10/16/200034

SECTION 15190 - MECHANICAL IDENTIFICATION

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK:

A. Extent of mechanical identification work required by this section is indicated ondrawings and/or specified in other Division-15 sections.

B. Type of identification devices specified in this section include the following:

1. Painted Identification Materials.2. Plastic Pipe Markers.3. Underground-Type Plastic Line Marker.4. Valve Tags.5. Valve Schedule Frames.

C. Mechanical identification furnished as part of factory-fabricated equipment isspecified as part of equipment assembly in other Division-15 sections.

D. Refer to other Division-15 sections for identification requirements at central-stationmechanical control center; not work of this section.

E. Refer to Division-16 sections for identification requirements of electrical work; notwork of this section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacturer ofidentification devices of types and sizes required, whose products have been insatisfactory use in similar service for not less than 5 years.

B. Codes and Standards:

1. ANSI Standards: Comply with ANSI A13.1 for lettering size, length ofcolor field, colors, and viewing angles of identification devices.

1.3 SUBMITTALS:

A. Product Data: Submit manufacturer's technical product data and installationinstructions for each identification material and device required.

B. Samples: Submit samples of each color, lettering style and other graphicrepresentation required for each identification material or system.

15190 MECHANICAL IDENTIFICATION

10/16/00 35

C. Schedules: Submit valve schedule for each piping system, typewritten andreproduced on 8-1/2" x 11" bond paper. Tabulate valve number, piping system,system abbreviation (as shown on tag), location of valve (room or space), andvariations for identification (if any);include one isolation valve on separateschedule. Mark valves which are intended for emergency shut-off and similarspecial uses by special flags in margin of schedule. In addition to mounted copies,furnish extra copies for Maintenance Manuals.

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS:

A. Manufacturer: Subject to compliance with requirements, provide mechanicalidentification materials of one of the following:

1. Allen Systems, Inc.2. Brady (W.H.) Co.; Signmark Div.3. Seton Name Plate Corp.

2.2 MECHANICAL IDENTIFICATION MATERIALS:

A. General: Provide manufacturer's standard products of categories and types requiredfor each application as referenced in other Division-15 sections. Where more thansingle type is specified for application, selection is Installer's option, but providesingle selection for each product category.

2.3 PAINTED IDENTIFICATION MATERIALS:

A. Stencils: Standard fiberboard stencils, prepared for required applications with lettersizes generally complying with recommendations of ANSI A13.1 for piping andsimilar applications.

B. Stencil Paint: Standard exterior type stenciling enamel; black, except as otherwiseindicated; either brushing grade or pressurized spray-can form and grade.

C. Identification Paint: Standard identification enamel of colors indicated or, if nototherwise indicated for piping systems, comply with ANSI A13.1 for colors.

2.4 PLASTIC PIPE MARKERS:

A. Snap-On Type: Provide manufacturer's standard pre-printed, semi-rigid snap-on,color-coded pipe markers, complying with ANSI A13.1.


10/16/0036

B. Pressure-Sensitive Type: Provide manufacturer's standard pre-printed, permanentadhesive, color-coded, pressure-sensitive vinyl pipe markers, complying with ANSIA13.1.

C. Small Pipes: For external diameters less than 6" (including insulation if any),provide full-band pipe markers, extending 360 degrees around pipe at each location,fastened by one of the following methods:

1. Snap-on application of pre-tensioned semi-rigid plastic pipe marker.2. Taped to pipe (or insulation) with color-coded plastic adhesive tape, not less

than 3/4" wide; full circle at both ends of pipe marker, tape lapped 1-1/2".

D. Large Pipes: For external diameters of 6" and larger (including insulation if any),provide either full-band or strip-type pipe markers, but not narrower than 3 timesletter height (and of required length), fastened by one of the following methods:

1. Taped to pipe (or insulation) with color-coded plastic adhesive tape, not lessthan 1-1/2" wide, full circle at both ends of pipe marker, tape lapped 3".

2. Strapped-to-pipe (or insulation) application of semi-rigid type, withmanufacturer's standard stainless steel bands.

E. Lettering: Manufacturer's standard pre-printed nomenclature which best describespiping system in each instance, as selected by owner in cases of variance withnames as shown or specified.

1. Arrows: Print each pipe marker with arrows indicating direction of flow,either integrally with piping system service lettering (to accommodate bothdirections), or as separate unit of plastic.

2.5 UNDERGROUND-TYPE PLASTIC LINE MARKERS:

A. General: Manufacturer's standard permanent, bright-colored, continuous-printedplastic tape, intended for direct-burial service; not less than 6" wide x 4 mils thick.Provide tape with printing which most accurately indicates type of service of buriedpipe.

2.6 VALVE TAGS:

A. Brass Valve Tags: Provide 19-gauge polished brass valve tags with stamp-engraved piping system abbreviation in 1/4" high letters and sequenced valvenumbers 1/2" high, and with 5/32" hole for fastener.

1. Provide 1-1/2" diameter tags, except as otherwise indicated.2. Provide size and shape as specified or scheduled for each piping system.


10/16/00 37

3. Fill tag engraving with black enamel. DELETE ABOVE IF PLAINSTAMPING DESIRED (LOWER COST).

B. Valve Tag Fasteners: Provide manufacturer's standard solid brass chain (wire linkor beaded type), or solid brass S-hooks of the sizes required for properattachment of tags to valves, and manufactured specifically for that purpose.

2.7 VALVE SCHEDULE FRAMES:

A. General: For each page of valve schedule, provide glazed display frame, withscrews for removable mounting on masonry walls. Provide frames of finishedhardwood or extruded aluminum, with SSB-grade sheet glass.

2.8 LETTERING AND GRAPHICS:

A. General: Coordinate names, abbreviations and other designations used inmechanical identification work, with corresponding designations shown, specifiedor scheduled. Provide numbers, lettering and wording as indicated or, if nototherwise indicated, as recommended by manufacturers or as required for properidentification and operation/maintenance of mechanical systems and equipment.

1. Multiple Systems: Where multiple systems of same generic name areshown and specified, provide identification which indicates individualsystem number as well as service (as examples; Boiler No. 3, Air SupplyNo. 1H, Standpipe F12).

PART 3 - EXECUTION

3.1 GENERAL INSTALLATION REQUIREMENTS:

A. Coordination: Where identification is to be applied to surfaces which requireinsulation, painting or other covering or finish, including valve tags in finishedmechanical spaces, install identification after completion of covering and painting.Install identification prior to installation of acoustical ceilings and similarremovable concealment.

3.2 PIPING SYSTEM IDENTIFICATION:

A. General: Install pipe markers of one of the following types on each systemindicated to receive identification, and include arrows to show normal direction offlow:

1. Stenciled markers, with lettering color complying with ANSI A13.1.


10/16/0038

2. Plastic pipe markers, with application system as indicated under "Materials"in this section. Install on pipe insulation segment where required for hotnon-insulated pipes.

B. Locate pipe markers and color bands as follows wherever piping is exposed to viewin occupied spaces, machine rooms, accessible maintenance spaces (shafts, tunnels,plenums) and exterior non-concealed locations.

1. Near each valve and control device.2. Near each branch, excluding short take-offs for fixtures and terminal units;

mark each pipe at branch, where there could be question of flow pattern.3. Near locations where pipes pass through walls or floors/ceilings, or enter

non-accessible enclosures.4. At access doors, manholes and similar access points which permit view of

concealed piping.5. Near major equipment items and other points of origination and termination.6. Spaced intermediately at maximum spacing of 50' along each piping run,

except reduce spacing to 25' in congested areas of piping and equipment.7. On piping above removable acoustical ceilings, except omit intermediately

spaced markers.

3.3 UNDERGROUND PIPING IDENTIFICATION:

A. General: During back-filling/top-soiling of each exterior underground pipingsystems, install continuous underground-type plastic line marker, located directlyover buried line at 6" to 8" below finished grade. Where multiple small lines areburied in common trench and do not exceed overall width of 16", install single linemarker.

3.4 VALVE IDENTIFICATION:

A. General: Provide valve tag on every valve, cock and control device in each pipingsystem; exclude check valves, valves within factory-fabricated equipment units,plumbing fixture faucets, convenience and lawn-watering hose bibs, and shut-offvalves at plumbing fixtures, HVAC terminal devices and similar rough-inconnections of end-use fixtures and units. List each tagged valve in valve schedulefor each piping system.

B. Mount valve schedule frames and schedules in machine rooms where indicated or,if not otherwise indicated, where directed by owner.

1. Where more than one major machine room is shown for project, installmounted valve schedule in each major machine room, and repeat only mainvalves which are to be operated in conjunction with operations of more thansingle machine room.


10/16/00 39

3.5 MECHANICAL EQUIPMENT IDENTIFICATION:

A. General: Install engraved brass equipment marker on or near each major item ofmechanical equipment and each operational device.

1. Main control and operating valves, including safety devices and hazardousunits such as gas outlets.

2. Meters, gauges and similar units.3. Fuel-burning units including boilers, furnaces, heaters, stills and absorption

units.4. Pumps, compressors, chillers, condensers and similar motor-driven units.5. Heat exchangers, coils, evaporators, cooling towers, heat recovery units and

similar equipment.6. Fans, blowers, primary balancing dampers and mixing boxes.7. Packaged HVAC central-station and zone-type units.8. Tanks and pressure vessels.9. Strainers, filters, humidifiers, water treatment systems and similar

equipment.

B. Optional Sign Types: Where lettering larger than 1" height is needed for properidentification, because of distance from normal location of required identification,stenciled signs may be provided in lieu of engraved plastic, at Installer's option.

3.7 ADJUSTING AND CLEANING:

A. Adjusting: Relocate any mechanical identification device which has becomevisually blocked by work of this division or other divisions.

B. Cleaning: Clean face of identification devices and glass frames of valve charts.


10/16/200040

SECTION 15241 - VIBRATION CONTROL

PART 1 - GENERAL

1.1 DESCRIPTION OF WORK:

A. Extent of vibration control work required by this section is indicated on drawingsand schedules, and/or specified in other Division-15 sections.

B. Types of vibration control products specified in this section include the following:

1. Neoprene Pads.2. Vibration Isolation Springs.3. All-Directional Anchors.4. Neoprene Mountings.5. Spring Isolators, Free-Standing.6. Spring Isolators, Housed.7. Spring Isolators, Vertically-Restrained.8. Thrust Restraints.9. Inertia Base Frames.10. Isolation Hangers.11. Riser Isolators.12. Flexible Pipe Connectors.

C. Vibration control products furnished as integral part of factory- fabricatedequipment, are specified as part of equipment assembly in other Division-15sections.

D. Refer to other Division-15 sections for equipment foundations, hangers, sealants,gaskets, and other work related to vibration control work.

E. Refer to other Division-15 sections for requirements of electrical connections toequipment isolated on vibration control products.

F. Refer to other Division-15 sections for requirements of duct connections to airhandling equipment isolated on vibration control products.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of vibrationcontrol products, of type, size, and capacity required, whose products have been insatisfactory use in similar service for not less than 5 years.

1. Except as otherwise indicated, obtain vibration control products from singlemanufacturer.

15241 VIBRATION CONTROL

10/16/00 41

2. Engage manufacturer to provide technical supervision of installation ofvibration control products.

1.4 SUBMITTALS:

A. Product Data: (Three copies required) Submit manufacturer's technical productdata and installation instructions for each type of vibration control product. Submitschedule showing size, type, deflection, and location for each product furnished.

B. Shop Drawings: Submit manufacturer's assembly-type shop drawings indicatingdimensions, weights, required clearances, and method of assembly of components.Detail bases, and show location of equipment anchoring points, coordinated withequipment manufacturer's shop drawings.

C. Maintenance Data: Submit maintenance data for each type of vibration controlproduct

PART 2 - PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS:

A. Manufacturer: Subject to compliance with requirements, provide vibration controlproducts of one of the following:

1. Mason Industries, Inc.2. Peabody Noise Control, Inc.3. Vibration Eliminator Co., Inc.4. Vibration Mountings and Controls, Inc.

2.2 VIBRATION CONTROL MATERIALS AND SUPPORTS UNITS:

A. Neoprene Pads: Oil-resistant neoprene sheets, of manufacturer's standard hardnessand cross-ribbed or waffled pattern.

B. Vibration Isolation Springs: Wound-steel compression springs, or high-strengthspring alloy steel; with spring diameter not less than 0.8 of compressed height ofspring at rated loads. Provide minimum additional travel to solid, equal to 50% ofrated deflection. Provide spring wire with elastic limit stress exceeding at soliddeflection.

C. All-Directional Anchors: Provide all-directional acoustical pipe anchor consistingof telescopic arrangement of 2 sizes of steel tubing separated by minimum 1/2"thickness of heavy-duty neoprene and duck, or neoprene isolation material. Providevertical restraints by similar material arranged to prevent vertical travel in eitherdirection. Design for maximum 500 psi load on isolation materials, and provide forequal resistance in any direction. Equip anchor with threaded hole on top and 2


10/16/0042

holes in base plate for bolting down or provide welding provisions top and bottom,if indicated.

D. Neoprene Mountings: Provide neoprene mountings consisting of neoprene elementbonded between 2 steel plates that are neoprene- covered to prevent corrosion.Provide minimum rated deflection of 0.35". Provide threaded hole in upper plateand 2 holes in base plate for securing to equipment and to substrate.

E. Spring Isolators, Free-Standing: Except as otherwise indicated, provide vibrationisolation spring between top and bottom loading plates with pad-type isolatorbonded to bottom of bottom loading plate. Include studs or cups to ensure centeringof spring on plates. Include leveling bolt with lock nuts and washers, centered intop plate, arranged for leveling and anchoring supported equipment as indicated.Include holes in bottom plate for bolting unit to substrate as indicated.

F. Spring Isolators, Housed: Except as otherwise indicated, provide vibration isolationspring between telescoping steel housings with top and bottom loading plates withpad-type isolator bonded to bottom of loading plate. Include resilient inserts toseparate and guide telescoping housings.

1. Equip top loading plate with equipment anchorages as indicated or asrequired for support and attachment.

2. Include pad-type isolator bonded to top of top loading plate, except on unitswith leveling bolts.

3. Include holes in bottom plate for bolting unit to substrate.

G. Spring Isolators, Vertically-Restrained: Provide spring isolators in housing thatincludes vertical limit stops. Design housing to act as blocking during erection, andwith installed height and operating height being equal. Maintain 1/2" minimumclearance around restraining bolts, and between housing and springs. Design solimit stops are out of contact during normal operation.

H. Thrust Restraints: Provide horizontal thrust restraints consisting of spring elementin series with neoprene pad. Select spring deflection same as for equipmentloading. Design so thrust restraints can be pre-set and adjusted in field. Attachhorizontal restraints at centerline of thrust and symmetrically on either side of unit.

I. Inertia Base Frames: Where inertia bases are indicated for use with isolation unitsto support equipment, provide rectangular structural beam channel, or completesheet metal box concrete forms for floating foundations, with materials complyingwith ASTM A36. Frame unit as shown or, if not shown, with minimum depth of0.08 x longest dimension of base, but not less than 6" deep. Size frame as shownor, if not shown, so that weight of frame plus concrete fill will be greater thanoperating weight of equipment supported. Provide steel reinforcing both ways withboth ends of reinforcing butt welded to base framing.

1. Provide welded support brackets at points indicated, and anchor base frameto spring isolator units.


10/16/00 43

2. Provide anchor bolts, located as required for equipment anchorage andsupported for casting of concrete. Locate bolts as indicated.

3. Provide adjustable bolts in pipe sleeves; for minimum of 1/2" adjustmentaround anchor bolts.

J. Isolation Hangers: Hanger units formed with brackets and including manufacturer'sstandard compression isolators of type indicated. Design brackets for 3 times ratedloading of units. Fabricate units to accept misalignment of 15 degrees off center inany direction before contacting hanger box, and for use with either rod or strap typemembers, and including acoustical washers to prevent metal-to-metal contacts.

1. Provide vibration isolation spring with cap in lower part of hanger andrubber hanger element in top, securely retained in unit.

2. Provide neoprene element, with minimum deflection of 0.35", securelyretained in hanger box.

3. Provide fiberglass pad or shape, securely retained in unit, with threadedmetal top plate.

4. Provide hangers, precompressed to rated load to limit deflection duringinstallation. Design so hanger may be released after full load is applied.

K. Riser Isolators: Suspend risers from, or support risers by, spring hangers or springisolators. Wherever possible, anchor risers at central point with resilient anchors.Provide hanger or mounting deflection of 0.75" except in those expansion locationswhere additional deflection is required to limit deflection or load changes to plus orminus 25 degrees of initial deflection. Provide sliding guides held in position byresilient anchors, located between anchor points and end of piping, spaced asindicated.

L. Flexible Pipe Connectors:

1. For non-ferrous piping, provide bronze hose covered with bronze wire braidwith copper tube ends or bronze flanged ends, braze-welded to hose.

2. For ferrous piping, provide stainless steel hose covered with stainless steelwire braid with NPT steel nipples or 150 psi ANSI flanges, welded to hose.

3. Flexible Pipe Connectors: Provide neoprene or EDPM constructionconsisting of multiple plies of nylon tire cord fabric and elastomer moldedand cured in hydraulic rubber presses. Provide straight or elbow connectoras indicated, rated at 125 psi at 220 ° F (104 deg.C).

PART 3 - EXECUTION

3.1 INSPECTION:

A. Examine areas and conditions under which vibration control units are to beinstalled. Do not proceed with work until unsatisfactory conditions have beencorrected in manner acceptable to Installer.


10/16/0044

3.2 PERFORMANCE OF ISOLATORS:

A. General: Comply with minimum static deflections recommended by ASHRAE forselection and application of vibration isolation materials and units as indicated.

B. Manufacturer's Recommendations: Except as otherwise indicated, comply withmanufacturer's recommendations for selection and application of vibration isolationmaterials and units.

3.3 APPLICATIONS:

A. General: Except as otherwise indicated, select vibration control products inaccordance with ASHRAE Handbook, 1980 Systems Volume, Chapter 35 "Soundand Vibration Control", Table 27. Where more than one type of product is offered,selection is Installer's option.

B. Piping: For piping connected to equipment mounted on vibration control products,install isolation hangers as indicated, and for first 3 points of support for pipe sizes4" and less, for first 4 points of support for pipe sizes 5" through 8", and for first 6points of support for pipe sizes 10" and over.

3.4 INSTALLATION:

A. General: Except as otherwise indicated, comply with manufacturer's instructionsfor installation and load application to vibration control materials and units. Adjustto ensure that units have equal deflection, do not bottom out under loading, and arenot short-circuited by other contacts or bearing points. Remove space blocks andsimilar devices intended for temporary support during installation.

B. Install units between substrate and equipment as required for secure operation andto prevent displacement by normal forces, and as indicated.

C. Adjust leveling devices as required to distribute loading uniformly onto isolators.Shim units as required where substrate is not level.

D. Install inertia base frames on isolator units as indicated, so that minimum of 1"clearance below base will result when frame is filled with concrete and supportedequipment has been installed and loaded for operation.

E. For air handling equipment, install thrust restraints as indicated, and also whereverthrust exceeds 10% of equipment weight.

F. Locate isolation hangers as near overhead support structure as possible.

G. Weld riser isolator units in place as required to prevent displacement from loadingand operations.


10/16/00 45

H. Flexible Pipe Connectors: Install on equipment side of shutoff valves, horizontallyand parallel to equipment shafts wherever possible.

I. Outdoor isolators shall have all parts other than springs galvanized. Springs shall becadmium plated or other method of corrosion resistance. Outdoor isolators shall beprovided with limit stops to resist wind loads.

3.5 ADJUSTING AND CLEANING:

A. Upon completion of vibration control work, prepare report showing measuredequipment deflections for each major item of equipment as indicated.

B. Clean each vibration control unit, and verify that each is working freely, and thatthere is no dirt or debris in immediate vicinity of unit that could possibly short-circuit unit isolation.


10/16/200046

SECTION 15250 – MECHANICAL INSULATION

PART 1 GENERAL

1.1 DESIGN GUIDELINES

1. Do not install insulation, other than acoustical duct lining, until all required tests have been completed.

2. All installation including sealants & adhesives to be in strict accordance with manufacturer’srecommendations.

3. Where vapor barriers are required with the insulation, do not use fasteners that will penetrate andviolate barrier integrity. Where penetration is required, patch with matching vapor barrier material.

4. Extend insulation on piping through sleeves to produce a continuous application, maintain samediameter.

5. Valve bodies, fittings, flanges, drip pockets, ect. On all lines need to be covered with molded orequivalent insulation to match pipe covering. Match piping thickness, vapor barriers, jackets andfinishes.

6. Provide metal cladding on insulated piping in tunnels.

7. All sectional insulation needs to be installed neatly and tightly buffed together with longitudinal jointsturned to last conspicuous side and slightly staggered. Tape or other coating shall be lapped over alljoints and well pasted down in a neat manner.

8. Provide removable insulation covers on fittings, pumps, balancing valves, ect that may require accessfor maintenance for adjustment.

9. Provide molded PVC covers on fittings, tees, elbows, end caps, valves, ect. Alternatively, flexibleunicellular insulation may be custom fit over pumps and valves provided that it is removable.

10. Where sound attention is required at exhaust fans, utilize interior duct line up to 20 feet on the in takeside.

11. In general, do not use interior duct lining on supply side. Utilize acoustical silences specifically sizedfor application at minimum pressure drops. Identify on drawings where interior must be used withlength of lining in duct.

12. Insulate the exterior of supply duct with same rigid fiberglass duct board or flexible fiberglass ductwrap.

13. Omit insulation on lot piping with in enclosures or unit cabinets; on cold piping within unit cabinetprovided that a drain pan is installed on traps, unions, strainers, valves, ect for steam and hot waterpiping.

14. For direct buried piping such as steam and condensate, use foam glass with pit wrap unless different aprefabricated piping system is used.

15250 MECHANICAL INSULATION

10/16/00 47

15. Insulate all cold surfaces on absorption chillers including generator section, heads, miscellaneous coldpiping, support legs, ect.

16. Insulate all piping including cold water, chilled water, hot water, heating hot water, steam andcondensate, horizontal sections of soil and roof drains including sump with fiberglass pipe insulation.Refrigerant piping may be fiberglass or flexible unicellular.

17. Insulate mechanical equipment as required by its service. Do not cover name plates, hand holes, ect.


1. Ductwork in unheated spaces should be insulated to achieve a minimum thermal resistance of R-4.

2. Heat loss in any complete fluid system should not exceed 5% of the total design heating capacity.

3. Internal duct liner air side coating should be fire resistant and resist erosion up to 5000 fpm airvelocities.

4. Flame/Smoke Rating: composite insulation to meet flame spread index of 25 or less and smokedeveloped index of 50 or less as tested by ASTM E 84 (NFPA 255).

5. Insulation Thickness (minimum values):

a. Ductwork – Fresh or outside air: 1” semi rigid fiberglass board- Supply: 1” semi rigid or 1 ½” fiberglass wrap.

b. Piping – cold water: 1” fiberglass or ½” flex. Unicellular up to 2” size.- hot water: 1” fiberglass for pipes up to and including 6” size

1 ½” fiberglass over 6” size- roof and soil: same as cold water- chilled water: 1” fiberglass up to and including 4” size

1 ½” fiberglass over 4” size- heating water: 2” fiberglass up to and including 2” size

2 ½” fiberglass for 2 ½” through 4” size3” fiberglass for 5” and above

- steam and condensate: same as heating water- refrigerant: 1” fiberglass up to and including 1” or ¾” unicellular

1 ½” fiberglass over 1” size or 1” unicellular

c. Equipment – cold equipment such as drip pans, pumps, storage tanks, chillers, water softeners,separators and expansion tanks, ect:

- 2” fiberglass for 35 degree and higher- 1” flexible unicellular

- hot equipment such as water heaters, storage tanks, condensate receivers, pumps,expansion tanks, ect:

- 2” fiberglass- absorption chillers: 1” flexible unicellular- buried piping: foamglass thickness per manufacturer recommendations for

particular applications

PART 2 PRODUCTS

2.1 PRODUCT DESCRIPTION

1. Piping – fiberglass: ASTM C547, class 1 with all purpose jacket

15250 MECHANICAL INSULATION

10/16/0048

- flexible unicellular: ASTM C534, Type 1- foamglass: ASTM C552- Jacketing: PVC ASTM C921, Type 1 for below ambient and Type 2 for above

ambient

2. Ductwork – Rigid Fiberglass Duct Board: ASTM C612, class 1- Flexible Fiberglass Wrap: ASTM C553, Type 1 with foil reinforced Kraft vapor

barrier.- Jacketing: same as piping

3. Equipment – Fiberglass: rigid, same as ductwork- flexible unicellular: same as piping


1. Manville Product Corp2. Owens-Corning Fiberglass Corp3. Certainteed Corp4. Knauf Fiberglass5. Armstrong World Industries for “Armaflex”6. Pittsburgh Corning for “Foamglas”

10/16/2000 49

SECTION 15411 - WATER DISTRIBUTION PIPING

PART 1 - GENERAL


A. Requirements of the following Division 15 Sections apply to and/or relate thissection:

1. "Basic Mechanical Requirements."2. "Basic Mechanical Materials and Methods."3. "Basic Piping Materials and Methods."4. "Pipe Expansion Joints."5. "Supports and Anchors."6. “Valves”7. “Meters and Gages”8. “Mechanical Identification”9. “Plumbing Pumps”

1.2 SUMMARY

A. This Section includes potable cold water, hot water, and circulation hot waterpiping, fittings, and specialties within the building to a point 5 feet outside thebuilding.

B. Water meters will be provided and installed by the utility company; coordinatelocation and installation with the utility company. This is the name and address ofthe utility company:

1. City of Kalamazoo, Public Services Department

1.3 DEFINITIONS

A. Water Distribution Pipe: A pipe within the building or on the premises thatconveys water from the water service pipe or meter to the points of usage.

B. Water Service Pipe: The pipe from the water main or other source of potable watersupply to the water distributing system of the building served.

C. Pipe sizes used in this standard are nominal pipe size (NPS).

1.4 SUBMITTALS

A. General: Submit the following :

15411 WATER DISTRIBUTION PIPING

10/16/0050

1. Product data, three required, for each piping specialty and valve specified.2. Certification of Compliance with ASME and UL fabrication requirements

specified below.3. Test reports specified in Part 3 of this Section.4. Maintenance data for each piping specialty and valve specified for inclusion

in Maintenance Manual specified Division 15 Section - "Basic MechanicalRequirements."


A. Regulatory Requirements: Comply with the provisions of the following codes:

1. ASME B31.9 "Building Services Piping" for materials, products, andinstallation. Safety valves and pressure vessels shall bear the appropriateASME label.

2. ASME Boiler and Pressure Vessel Code, Section IX, "Welding and BrazingQualifications" for Qualifications for Welding Processes and Operators.

3. Latest revision of State Plumbing Code.


A. Store pipe in a manner to prevent sagging and bending. Cap piping ends.

1.7 SEQUENCING AND SCHEDULING

A. Coordinate the size and location of concrete equipment pads. Cast anchor-boltinserts into pad.

B. Coordinate the installation of pipe sleeves for foundation wall penetrations.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Hose Bibbs:a. Nibco, Inc.b. Watts Regulator Co.c. Woodford Mfg. Co.

2. Wall Hydrants:


10/16/00 51

a. Woodford Mfg. Co.3. Backflow Preventers:

a. Febco.b. Hersey Products, Inc.c. Watts Regulator Co.

4. Pressure-Regulating Valves:a. Cash (A. W.) Valve Mfg. Corp.b. Spence Engineering Co., Inc.c. Watts Regulator Co.

5. Relief Valves:a. Cash (A. W.) Valve Mfg. Corp.b. Watts Regulator Co.

6. Water Hammer Arresters:a. Josam Co.b. Wade Div., Tyler Pipe.c. Watts Regulator Co.

7. Mechanical Couplings and Fittings For Grooved-End Galvanited Steel Pipe:a. Grinnell Corp.b. Victaulic Co. of America.

8. Mechanical Couplings and Fittings For Grooved-End Copper Tube:a. Victaulic Co. of America.

9. Vacuum Breakers For Hose Connections:a. Cash (A.W.) Valve Mfg. Corp.b. Watts Regulator Co.

2.2 PIPE AND TUBE MATERIALS, GENERAL

A. Pipe and Tube: Refer to Part 3, Article "Application, General," for identification ofsystems where the below materials are used.

B. Copper Tube: ASTM B 88, Type L Water Tube, drawn temper.

C. Copper Tube: ASTM B 88, Type K Water Tube, annealed temper.

D. Steel Pipe: ASTM A 53, schedule 40, seamless, galvanized, plain ends.

2.3 FITTINGS

A. Wrought Copper Solder-Joint Fittings: ANSI B16.22, streamlined pattern.

B. Galvanized Cast-Iron Threaded Fittings: ASME B16.4, Class 125, standard pattern,for threaded joints. Threads shall conform to ASME B1.20.1.

D. Grooved-End Mechanical Fittings: ASTM A 47, ASTM A 106, or A 536,galvanized fittings with grooves or shoulders designed to accept grooved-endcouplings.


10/16/0052

E. Mechanical Couplings For Grooved-End Piping: Ductile or malleable iron housing,a synthetic rubber gasket of a central cavity pressure-responsive design, with nuts,bolts, locking pin, locking toggle, or lugs to secure grooved pipe or tube andfittings. Couplings for use with AWWA Dimension piping shall conform toAWWA C606.

F. Unions: ASME B16.39, malleable iron, Class 150, hexagonal stock, with ball-and-socket joints, metal-to-metal bronze seating surfaces, female threaded ends.Threads shall conform to ASME B1.20.1.

G. Dielectric Unions: Threaded, solder, or grooved-end connections as required to suitapplication; constructed to isolate dissimilar metals, prevent galvanic action, andprevent corrosion.

H. Flexible Connectors: Stainless-steel bellows with woven, flexible, bronze wirereinforced protective jacket; minimum 150 psig working pressure, maximum 250deg F operating temperature. Connectors shall have flanged or threaded-endconnections to match equipment connected and shall be capable of 3/4-inchmisalignment.

2.4 JOINING MATERIALS

A. Solder Filler Metal: ASTM B 32, 95-5 Tin-Antimony.

B. Brazing Filler Metals: AWS A5.8, BCuP Series.

C. Gasket Material: Thickness, material, and type suitable for fluid to be handled anddesign temperatures and pressures.

2.5 GENERAL-DUTY VALVES

A. General-duty valves (i.e., check, ball, and butterfly valves) are specified in Division15 Section "Valves." Refer to Part 3 Article "Valve Application" for specific usesand applications for each valve specified.

2.6 PIPING SPECIALTIES

A. Water Hammer Arresters: Bellows type, with stainless steel casing and bellows,pressure rated for 250 psi, tested and certified in accordance with PDI StandardWH-201.

B. Hose Connections: Hose connections shall have garden hose thread outletsconforming to ASME B1.20.7.

C. Hose Bibbs: Bronze body, renewable composition disc, tee handle, 1/2- or 3/4-inchsolder inlet, hose outlet.


10/16/00 53

D. Recessed Nonfreeze Wall Hydrants: Cast-bronze box, with chrome-plated face, teehandle key, vacuum breaker, hinged locking cover, 3/4-inch inlet, and hose outlet.Bronze casing shall be length to suit wall thickness.

E. Vacuum Breakers: Hose connection vacuum breakers shall conform to ASSEStandard 1011, with finish to match hose connection.

F. Backflow Preventers: Reduced-pressure-principle assembly consisting of shutoffvalves on inlet and outlet and strainer on inlet. Assemblies shall include test cocksand pressure-differential relief valve located between 2 positive seating checkvalves and comply with requirements of ASSE Standard 1013.

G. Pressure-Regulating Valves: Single-seated, direct-operated type, having bronzebody with integral strainer and complying with requirements of ASSE Standard1003. Select proper size for maximum flow rate and inlet and outlet pressuresindicated.

H. Relief Valves: Sizes for relief valves shall be in accordance with ASME Boiler andPressure Vessel Codes for indicated capacity of the appliance for which installed.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine rough-in requirements for plumbing fixtures and other equipment withwater connections to verify actual locations of piping connections prior toinstallation.

3.2 PIPE APPLICATIONS

A. Install Type L, drawn copper tube with wrought copper fittings and solder joints forpipe sizes 2 inches and smaller, above ground, within building. Install Type K,annealed temper copper tube for pipe sizes 2 inches and smaller, with minimumnumber of joints, below ground.

B. Install galvanized steel pipe with threaded joints and fittings for 2½ to 4 inches,above ground, within building.

C. Install galvanized steel pipe with roll-grooved ends, grooved mechanical fittings,and mechanical couplings for greater than 4 inches, above ground, within building.

3.3 PIPING INSTALLATION

A. General Locations and Arrangements: Drawings (plans, schematics, and diagrams)indicate the general location and arrangement of the piping systems. Location and


10/16/0054

arrangement of piping layout take into consideration pipe sizing and friction loss,expansion, pump sizing, and other design considerations. So far as practical, installpiping as indicated.

B. Use fittings for all changes in direction and branch connections.

C. Install exposed piping at right angles or parallel to building walls. Diagonal runsare not permitted unless expressly indicated.

D. Install piping free of sags or bends and with ample space between piping to permitproper insulation applications.

E. Conceal all pipe installations in walls, pipe chases, utility spaces, above ceilings,below grade or floors, unless indicated to be exposed to view.

F. Install piping tight to slabs, beams, joists, columns, walls, and other permanentelements of the building. Provide space to permit insulation applications, with 1-inch clearance outside the insulation. Allow sufficient space above removableceiling panels to allow for panel removal.

G. Locate groups of pipes parallel to each other, spaced to permit applying fullinsulation and servicing of valves.

H. Install drains at low points in mains, risers, and branch lines consisting of a teefitting, 3/4-inch ball valve, and short 3/4-inch threaded nipple and cap.

I. Exterior Wall Penetrations: Seal pipe penetrations through exterior walls withsleeves and mechanical sleeve seals. Pipe sleeves smaller than 6 inches shall begalvanized steel pipe; pipe sleeves 6 inches and larger shall be galvanized steelsheet metal.

J. Fire Barrier Penetrations: Where pipes pass though fire-rated walls, partitions,ceilings, and floors, maintain the fire-rated integrity. K.Install piping with 1/32-inch-per-foot (1/4 percent) downward slope towards

3.4 HANGERS AND SUPPORTS

A. General: Hanger, support, and anchor devices conforming to MSS SP-69 arespecified in Division 15 Section "Supports and Anchors." Conform to the tablebelow for maximum spacing of supports:

B. Pipe Attachments: Install the following:

1. Adjustable steel clevis hangers, MSS Type 1, for individual horizontal runsless than 20 feet in length.

2. Adjustable roller hangers, MSS Type 43, and spring hangers, MSS Type 41with Type 49, for individual horizontal runs 20 feet and longer.

3. Pipe roll, complete MSS Type 44 for multiple horizontal runs, 20 feet orlonger, support on a trapeze.

4. Spring hangers to support vertical runs.


10/16/00 55

C. Install hangers for horizontal piping with maximum spacing and minimum rodsizes, shown Division 15 section “Support and Anchors”.

D. Support vertical steel pipe and copper tube at each floor.

E. Support plastic pipe and tubing in accordance with manufacturer'srecommendations.

3.5 PIPE AND TUBE JOINT CONSTRUCTION

A. Soldered Joints: Comply with the procedures contained in the AWS "SolderingManual."

B. Threaded Joints: Conform to ASME B1.20.1, tapered pipe threads for field-cutthreads. Join pipe fittings and valves as follows:

1. Note the internal length of threads in fittings or valve ends, and proximity ofinternal seat or wall, to determine how far pipe should be threaded into joint.

2. Align threads at point of assembly.3. Apply appropriate tape or thread compound to the external pipe threads

(except where dry seal threading is specified).4. Assemble joint wrench tight. Wrench on valve shall be on the valve end

into which the pipe is being threaded.a. Damaged Threads: Do not use pipe with corroded or damaged

threads. If a weld opens during cutting or threading operations, thatportion of pipe shall not be used.

C. Flanged Joints: Align flange surfaces parallel. Assemble joints by sequencing bolttightening to make initial contact of flanges and gaskets as flat and parallel aspossible. Use suitable lubricants on bolt threads. Tighten bolts gradually anduniformly with a torque wrench.

D. Grooved-End Joints: Prepare pipe and tubing and install in accordance withmanufacturer's installation instructions.

3.7 INSTALLATION OF VALVES

A. Sectional Valves: Install sectional valves on each branch and riser, close to main,where branch or riser serves 2 or more plumbing fixtures or equipment connections,and elsewhere as indicated. For sectional valves 2 inches and smaller, use ballvalves; for sectional valves 2-1/2 inches and larger, use butterfly valves.

EDIT BELOW AS DESIRED. USE OF 1/2- OR 3/4-INCH HOSE END DRAIN VALVESMAY BE ADEQUATE OR THIS APPLICATION.

B. Shutoff Valves: Install shutoff valves on inlet of each plumbing equipment item, oneach supply to each plumbing fixture, and elsewhere as indicated. For shutoff


10/16/0056

valves 2 inches and smaller, use ball valves; for shutoff valves 2-1/2 inches andlarger, use butterfly valves.

C. Drain Valves: Install drain valves on each plumbing equipment item, located todrain equipment completely for service or repair. Install drain valves at low pointsof horizontal runs, and elsewhere as required to drain distribution piping systemcompletely. For drain valves 2 inches and smaller, use gate or ball valves; for drainvalves 2-1/2 inches and larger, use butterfly valves.

D. Check Valves: Install swing check valves on discharge side of each pump andelsewhere as indicated.

E. Balance valves: Install in each hot water recirculating loop, discharge side of eachpump, and elsewhere as indicated.

F. Hose Bibbs: Install on exposed piping where indicated with vacuum breaker.

G. Wall Hydrants: Install where indicated with vacuum breaker.

3.8 INSTALLATION OF PIPING SPECIALTIES

A. Install backflow preventers at each connection to mechanical equipment andsystems and in compliance with the plumbing code. Locate in same room asequipment being connected. Install air cap fitting and pipe relief outlet drainwithout valves to nearest floor drain.

B. Install pressure-regulating valves with inlet and outlet shutoff valves and balancevalve bypass. Install pressure gage on valve outlet.

3.9 EQUIPMENT CONNECTIONS

A. Piping Runouts to Fixtures: Provide hot and cold water piping runouts to fixturesof sizes indicated, but in no case smaller than required by plumbing code.

B. Mechanical Equipment Connections: Connect hot and cold water piping system tomechanical equipment as indicated. Provide shutoff valve and union for eachconnection; provide drain valve on drain connection. For connections 2-1/2 inchesand larger, use flanges instead of unions.

3.10 FIELD QUALITY CONTROL1. Do not enclose, cover, or put into operation water distribution piping system

until it has been inspected and approved by the authority having jurisdiction.2. During the progress of the installation, notify the plumbing official having

jurisdiction at least 24 hours prior to the time such inspection must be made.Perform tests specified below in the presence of the plumbing official.


10/16/00 57

a. Rough-in Inspection: Arrange for inspection of the piping systembefore concealed or closed in after system is roughed in and prior tosetting fixtures.

b. Final Inspection: Arrange for a final inspection by the plumbingofficial to observe the tests specified below and to ensure compliancewith the requirements of the plumbing code.

3. Reinspections: Whenever the plumbing official finds that the piping systemwill not pass the test or inspection, make the required corrections andarrange for reinspection by the plumbing official.

4. Reports: Prepare inspection reports signed by the plumbing official.

B. Test water distribution piping as follows:

1. Test for leaks and defects all new water distribution piping systems andparts of existing systems that have been altered, extended or repaired. Iftesting is performed in segments, submit a separate report for each test,complete with a diagram of the portion of the system tested.

2. Leave uncovered and unconcealed all new, altered, extended, or replacedwater distribution piping until it has been tested and approved. Expose allsuch work for testing that has been covered or concealed before it has beentested and approved.

3. Cap and subject the piping system to a static water pressure of 50 psig abovethe operating pressure without exceeding the pressure rating of the pipingsystem materials. Isolate the test source and allow to stand for 4 hours.Leaks and loss in test pressure constitute defects that must be repaired.

4. Repair all leaks and defects with new materials and retest system or portionthereof until satisfactory results are obtained.

5. Prepare reports for all tests and required corrective action.


A. Clean and disinfect water distribution piping as follows:

1. Purge all new water distribution piping systems and parts of existingsystems that have been altered, extended, or repaired prior to use.

2. Use the purging and disinfecting procedure proscribed by the authorityhaving jurisdiction or, in case a method is not prescribed by that authority,the procedure described in either AWWA C651, or AWWA C652, or asdescribed below:a. Flush the piping system with clean, potable water until dirty water

does not appear at the points of outlet.b. Fill the system or part thereof with a water/chlorine solution

containing at least 50 parts per million of chlorine. Isolate (valve off)the system or part thereof and allow to stand for 24 hours.

c. Drain the system or part thereof of the previous solution and refill witha water/chlorine solution containing at least 200 parts per million ofchlorine and isolate and allow to stand for 3 hours.


10/16/0058

d. Following the allowed standing time, flush the system with clean,potable water until chlorine does not remain in the water coming fromthe system.

e. Submit water samples in sterile bottles to the authority havingjurisdiction. Repeat the procedure if the biological examination madeby the authority shows evidence of contamination.

B. Prepare reports for all purging and disinfecting activities.

3.12 COMMISSIONING

A. Fill the system. Check compression tanks to determine that they are not air boundand that the system is completely full of water.

B. Before operating the system, perform these steps:

1. Close drain valve, hydrants, and hose bibbs.2. Open valves to full open position.3. Remove and clean strainers.4. Check pumps for proper direction of rotation. Correct improper wiring.5. Lubricate pump motors and bearings.


10/16/2000 59

SECTION 15430 - PLUMBING SPECIALTIES

PART 1 - GENERAL


A. Related Sections: The following sections contain requirements that relate to thisSection:

1. Division 11 Section “Oil/Water Separators” for oil/water separators.

2. Division 15 Section “Basic Mechanical Materials and Methods” for piping-joining materials, joint construction, basic installation requirements, andlabeling and identifying requirements.

1.2 SUMMARY

A. This Section includes plumbing specialties for water distribution systems; soil,waste, and vent systems; and storm drainage systems.

1.3 SYSTEM PERFORMANCE REQUIREMENTS

A. Provide components and installation capable of producing piping systems withfollowing minimum working pressure ratings, except where otherwise indicated:

1. Water Distribution Systems, Below Ground: 150 psig.2. Water Distribution Systems, Above Ground: 125 psig.3. Soil, Waste, and Vent Systems: 10-foot head of water.4. Storm Drainage Systems: 10-foot head of water.5. Sanitary Sewage, Pumped Piping Systems: 75 psig.6. Storm Sewage, Pumped Piping Systems: 75 psig.

1.4 SUBMITTALS

A. Submit product data, three copies required, including rated capacities of selectedmodels and weights (shipping, installation, and operation). Indicate materials,finishes, dimensions, required clearances, and methods of assembly of components;and piping connections for the following plumbing specialty products:

1. Thermostatic water-mixing valves and water-tempering valves.2. Drain valves.3. Trap seal primer valves.4. Backwater valves.5. Cleanouts, cover plates, and access panels.

15430 PLUMBING SPECIALTIES

10/16/0060

6. Floor drains, open receptors, trench drains, and roof drains.7. Grease interceptors, oil interceptors and solids interceptors.

B. Maintenance data for inclusion in Operating and Maintenance manuals for thefollowing:

1. Thermostatic water-mixing valves and water-tempering valves.2. Backwater valves.3. Grease interceptors, grease recovery units, oil interceptors and oil storage

tanks, and solids interceptors.


A. Comply with ASME B31.9, "Building Services Piping," for materials, products, andinstallation.

B. Listing and Labeling: Provide equipment that is listed and labeled.

1. Listing and Labeling Agency Qualifications: A "Nationally RecognizedTesting Laboratory" (NRTL) as defined in OSHA Regulation 1910.7.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Thermostatic Water-Mixing Valves:a. Symmons Industries, Inc.

2. Trap Seal Primer Valves:a. Josam Co.b. Wade Div., Tyler Pipe.c. Zurn by Hydromechanics Div., Zurn Industries, Inc.

3. Backwater Valves:a. Josam Co.b. Zurn by Hydromechanics Div., Zurn Industries Inc.

2.2 THERMOSTATIC WATER-MIXING VALVES

A. General: ASSE 1017, manually adjustable, thermostatic water-mixing valve withbronze body. Include checkstop and union on hot-water and cold-water supplyinlets, adjustable temperature setting, and capacity at pressure loss as indicated.


10/16/00 61

1. Operation and Pressure Rating: Bimetal thermostat, 125 psig minimum.

B. Thermostatic Water-Mixing Valves: Unit, with options as indicated.

1. Piping, of sizes and in arrangement, with valves and unions indicated.2. Piping Component Finish: Rough brass.3. Cabinet: Steel box with steel hinged door and white enameled finish.4. Cabinet Mounting: Recessed.

2.3 MISCELLANEOUS PIPING SPECIALTIES

A. Piping specialties such as escutcheons, strainers, dielectric fittings, sleeves, andsleeve seals are specified in Division 15 Section "Basic Mechanical Materials andMethods."

B. Trap Seal Primer Valves: ASSE 1018, water-supply-fed type, with the followingcharacteristics:

1. 125-psig minimum working pressure.2. Bronze body with atmospheric-vented drain chamber.3. Inlet and Outlet Connections: 1/2-inch threaded, union, or solder joint.4. Gravity Drain Outlet Connection: 1/2-inch threaded or solder joint.5. Finish: Chrome plated, or rough bronze for units used with pipe or tube that

is not chrome finished.

C. Horizontal Backwater Valves: ASME A112.14.1, cast-iron body, with removablebronze swing-check valve and threaded or bolted cover.

1. Closed-Position Check Valve: Factory assembled or field modified to hangclosed except when subject to backflow condition.

2. Open-Position Check Valve: Factory assembled or field modified to hangopen except when subject to backflow condition.

3. Extension: Full-size, Service Class, cast-iron soil-pipe extension to field-installed cleanout at floor, instead of cover.

D. Drain Outlet, Backwater Valves: Cast-iron or bronze body, with removable ballfloat, threaded inlet, and threaded or spigot outlet.

2.4 CLEANOUTS

A. General: Size cleanouts as indicated on drawings, or where not indicated, same sizeas connected drainage piping. Cleanouts larger than 4 inches are not requiredexcept where indicated.

B. Cleanouts: ASME A112.36.2M, cast-iron body with straight threads and gasketseal or taper threads for plug, flashing flange and clamping ring, and a brass closure


10/16/0062

plug. Cleanouts for installation in floors not having membrane waterproofing maybe furnished without clamping ring. Provide nickel bronze cover in finished floorand 18 gauge stainless steel cover in finished walls.

2.5 FLOOR DRAINS

A. General: Size outlets as indicated on or drawings.

B. Floor Drains and Shower Drains: ASME A112.21.1M, cast-iron body, withseepage flange and clamping device, and 7” nickel bronze adjustable strainersecured with screw. Floor drains for installation in floors not having membranewaterproofing may have seepage flange without clamping device. For gangshowers, provide 8 x 4½” top gutter drain with nickel bronze strainer secured withscrew

C. Kitchen Drains: Cast iron, double drainage flange, clamping device, adjustableductile iron strainer with nickel bronze veneer and sediment bucket.

2.6 ROOF DRAINS

A. General: Size outlet as indicated on drawings.

B. Roof Drains: ASME A112.21.2M, cast-iron body, female threaded outlet, withcombination flashing ring and gravel stop, aluminum dome approximately 12inches in diameter and not les than 100 square inches free area, extension collars,underdeck clamp, and sump receiver. Roof drains for installation in cast-in-placeconcrete decks may be furnished without underdeck clamp and sump receiver.

2.7 INTERCEPTORS

A. General: Units of type, operation, flow rate, storage or retention capacity; withintegral or field-installed cleanout on outlet; and other features indicated.

B. Grease Interceptors: PDI G-101, having maximum flow capacity of 100 gallons perminute and grease retention capacity of 200 lb.

C. Arrangement: Interior baffles, removable cover, flow control fitting, and cleanouton outlet.

1. Material: Cast iron or steel with corrosion-resistant coating.

D. Oil Interceptors: Features include baffles, removable basket or strainer, removablecover, flow control fitting, and cleanout on outlet.

1. Material: Cast iron.


10/16/00 63

E. Solids Interceptors: Features include settlement chambers; baffles; removablebasket, strainer, screens, or other means of cleaning; and removable cover

1. Material: Cast iron, steel, stainless steel, or bronze.

PART 3 - EXECUTION

3.1 PIPING SPECIALTY INSTALLATION

A. Install trap seal primer valves with valve outlet piping pitched down toward draintrap a minimum of 1/8 inch per foot (1 percent) and connect to floor drain body,trap, or inlet fitting. Adjust valve for proper flow.

B. Install backwater valves in building drain piping as indicated. For interiorinstallation, provide cleanout deck plate (cover) flush with floor and centered overbackwater valve cover and of adequate size to remove valve cover for service.

C. Install expansion joints on vertical risers, stacks, and conductors as required.

D. Install cleanouts in above-ground piping and building drain piping as indicated, andwhere not indicated, according to the following:

1. Size same as drainage piping up to 4-inch size. Use 4-inch size for largerdrainage piping except where larger size cleanout is indicated.

2. Locate at each change in direction of piping greater than 45 degrees.3. Locate at minimum intervals of 50 feet for piping 4 inches and smaller and

100 feet for larger piping.4. Locate at base of each vertical soil or waste stack.

E. Install cleanout deck plates (covers) with top flush with finished floor, for floorcleanouts for piping below floors.

F. Install cleanout wall access covers with frame and cover flush with finished wall,for cleanouts located in concealed piping.

3.4 FLOOR DRAIN INSTALLATION

A. Install floor drains according to manufacturer's written instructions indicated.

B. Install floor drains at low points of surface areas to be drained. Set tops of drainsflush with finished floor.

C. Set drain elevation depressed below finished slab elevation as listed below toprovide proper floor slope to drain:

1. 5-Foot Drain Area Radius: 1/2-inch depression.2. 10-Foot Drain Area Radius: 3/4-inch depression.


10/16/0064

3. 15-Foot Drain Area Radius: 1-inch depression.4. 20-Foot Drain Area Radius: 1-1/4-inch depression.5. 25-Foot Drain Area Radius: 1-1/2-inch depression.

D. Trap drains connected to sanitary building drain.

E. Install drain flashing collar or flange so that no leakage occurs between drain andadjoining flooring. Maintain integrity of waterproof membranes, where penetrated.

F. Position drains for easy accessibility and maintenance.

3.5 ROOF DRAIN INSTALLATION

A. Install roof drains at low points of roof areas, according to the roof membranemanufacturer's installation instructions.

B. Install drain flashing collar or flange so no leakage occurs between roof drain andadjoining roofing. Maintain integrity of waterproof membranes, where penetrated.

C. Position roof drains for easy accessibility and maintenance.

3.6 INTERCEPTOR INSTALLATION

A. General: Comply with unit manufacturer's written installation instructions and withlocal authority for trapping and venting.

B. Install units with clear space for servicing.

C. Install waste piping, flow control fitting, vent piping, and accessories as required.

D. Install cleanout immediately downstream of interceptor units not having integralcleanout on outlet.

3.7 CONNECTIONS

A. Supply Runouts to Fixtures: Install hot- and cold-water supply piping runouts tofixtures of sizes indicated, but not smaller than required by plumbing code.

B. Drainage Runouts to Fixtures: Provide drainage and vent piping runouts toplumbing fixtures and drains, with approved trap, of sizes indicated, but not smallerthan required by plumbing code.

C. Locate drainage piping runouts as close as possible to bottom of floor slabsupporting fixtures or drains.

D. Interceptor Connections: Connect piping, flow control fittings, vents, andaccessories as required.


10/16/00 65

3.8 COMMISSIONING

A. Preparation: Perform the following checks before start-up:

1. Systems tests are complete.2. Damaged and defective specialties and accessories have been replaced or

repaired.3. There is clear space for servicing of specialties.

B. Before operating systems, perform these steps:

1. Close drain valves, hydrants, and hose bibbs.2. Open valves to full open position.3. Remove and clean strainers.4. Verify drainage and vent piping are clear of obstructions. Flush with water

until clear.

C. Starting Procedures: Follow manufacturer's written procedures.

3.10 ADJUSTING

A. Adjust operation and correct deficiencies discovered during commissioning.

3.11 DEMONSTRATION

A. Train Owner's maintenance personnel on procedures related to startup and servicingof interceptors.

3.12 PROTECTION

A. Protect drains during construction period to avoid clogging with dirt and debris andto prevent damage from traffic and construction work.

B. Place plugs in ends of uncompleted piping at end of day or when work stops.


10/16/200066

SECTION 15453 - WATER DISTRIBUTION PUMPS

THIS SECTION USES THE TERM ARCHITECT. CHANGE THIS TERM ASNECESSARY TO MATCH THE ACTUAL TERM USED TO IDENTIFY THEDESIGN PROFESSIONAL AS DEFINED IN THE GENERAL ANDSUPPLEMENTARY CONDITIONS.

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following types of water distribution pumps for plumbingsystems:

1. In-line circulators.2. In-line pumps.3. End-suction pumps.

B. Related Sections: The following Sections contain requirements that relate to thisSection:

1. Division 15 Section "Meters and Gages" for pressure gages.2. Division 15 Section "Motors" for pump motors.3. Division 15 Section "Vibration Control" for inertia pads, isolation pads,

spring supports, and spring hangers.4. Division 15 Section "Plumbing Piping" for piping not specified in this

Section.5. Division 16 Sections for power-supply wiring, field-installed disconnects,

required electrical devices, and motor controllers.

1.2 PUMP PERFORMANCE REQUIREMENTS

A. Pump Pressure Ratings: At least equal to system maximum operating pressure atpoint where installed.

1.3 SUBMITTALS

A. Product data including certified performance curves, weights (shipping, installed,and operating), furnished specialties, and accessories. Include startup instructions.

B. Maintenance data, three copies required, for each type and size pump specified toinclude in the "Operating and Maintenance Manual".


15453 WATER DISTRIBUTION PUMPS

10/16/00 67

A. Regulatory Requirements: Comply with provisions of the following:

1. ASME B31.9 "Building Services Piping" for piping materials andinstallation.

2. H.I. "Hydraulic Institute Standards for Centrifugal, Rotary andReciprocating Pumps" for pump design, manufacture, and installation.

3. UL 778 "Standard for Motor Operated Water Pumps" for constructionrequirements. Include UL listing and labelling.

4. NEMA MG 1 "Standard for Motors and Generators" for electric motors.Include NEMA listing and labelling.

5. NFPA 70 "National Electrical Code" for electrical components andinstallation.

B. Single-Source Responsibility: Obtain same type of pumps from a singlemanufacturer with pumps, components, and accessories from a single source.Include responsibility and accountability to answer and resolve problems regardingcompatibility, installation, performance, and acceptance of pumps.


A. Store pumps in a clean, dry location.

B. Retain shipping flange protective covers and protective coatings during storage.

C. Protect bearings and couplings against damage from sand, grit, or other foreignmatter.

D. Comply with pump manufacturer's rigging instructions for handling.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Bell & Gossett Division, ITT Fluid TechnologyCorporation.

2.2 PUMPS, GENERAL

A. Water Distribution Pumps: Factory assembled and tested.

B. Capacities and Characteristics: As indicated.

C. Motors: NEMA MG 1; single, multiple, or variable speed with type of enclosureand electrical characteristics indicated. Include built-in thermal-overload protectionand grease-lubricated ball bearings. Motors are non-overloading within full rangeof pump performance curves.


10/16/0068

D. Finish: Manufacturer's standard paint applied to factory-assembled and -testedplumbing pump units before shipping.

E. Manufacturer's Preparation for Shipping: Clean flanges and exposed machinedmetal surfaces and treat with anticorrosion compound after assembly and testing.Protect flanges, pipe openings, and nozzles with wooden flange covers or withscrewed-in plugs.

2.3 IN-LINE CIRCULATORS

A. General Description: Horizontal, in line, centrifugal, single stage, rated for 125-psig (860kPa) minimum working pressure and 225 deg F (107 deg C) continuouswater temperature.

B. All-Bronze, In-Line Circulator: Horizontal, in line, centrifugal, single stage, allbronze, with radially split case design.

1. Casing: Bronze, with threaded companion flanges for piping connectionssmaller than 2-1/2 inches (65 mm), and threaded gage tappings at inlet andoutlet connections.

2. Impeller: Cast bronze, statically and dynamically balanced, closed,overhung, single suction, and keyed to shaft.

3. Shaft and Sleeve: Steel shaft with oil-lubricated bronze sleeve.4. Mechanical Seals: Carbon steel rotating ring, stainless-steel spring, ceramic

seat, and flexible bellows and gasket.5. Pump Bearings: Oil-lubricated bronze sleeve bearings.6. Motor Bearings: Oil-lubricated sleeve bearings.7. Shaft Coupling: Flexible, capable of absorbing torsional vibration and shaft

misalignment.8. Motor: Resiliently mounted to the pump casing.

C. Compact, In-Line Circulator: Leakproof, in-line, sealless, volute-type pump.Include pump and motor assembled on a common shaft in a hermetically sealedunit, without stuffing boxes or mechanical seals. Lubricate sleeve bearing and coolmotor by circulating pumped liquid through motor section. Isolate motor sectionfrom motor stator windings with a corrosion-resistant, nonmagnetic alloy liner.

1. Casing: Cast bronze, with stainless-steel liner and static O-ring seal toseparate motor section from motor stator, and flanged piping connections.

2. Impeller: Overhung, single-suction, closed or open nonmetallic impeller.3. Shaft and Sleeve: Stainless-steel shaft with carbon-steel bearing sleeve.4. Motor: Multispeed.

2.4 IN-LINE PUMPS

A. General Description: In line, centrifugal, separately coupled, single-stage, withmechanical seals, and rated for 125-psig (860kPa) working pressure and 225 deg F(107 deg C) continuous water temperature.


10/16/00 69

B. Horizontal, In-Line Pumps: All bronze, made for horizontal mounting.

1. Casing: Bronze, with threaded companion flanges for piping connectionssmaller than 2-1/2 inches (65 mm), and threaded gage tappings at inlet andoutlet connections.

2. Impeller: ASTM B 36/B 36M rolled brass or ASTM B 584 cast bronze,statically and dynamically balanced, closed, overhung, single suction, andkeyed to shaft.

3. Shaft and Sleeve: Steel shaft, with oil-lubricated copper sleeve.4. Mechanical Seals: Carbon-steel rotating ring, stainless-steel spring, ceramic

seat, and Buna-N bellows and gasket. Include flinger on motor shaftbetween motor and seals to prevent liquid that leaks past pump seals fromentering the motor bearings.

5. Pump Bearings: Oil-lubricated bronze journal and thrust bearings.6. Motor Bearings: Oil-lubricated sleeve bearings.7. Shaft Coupling: Flexible, capable of absorbing torsional vibration and shaft

misalignment.8. Motor: Resiliently mounted to the pump casing.

C. Vertical, In-Line Pumps: Bronze fitted, made for vertical mounting.

1. Casing: Cast iron, with threaded companion flanges for piping connectionssmaller than 2-1/2 inches (65 mm), and threaded gage tappings at inlet andoutlet connections.

2. Impeller: Statically and dynamically balanced, closed, overhung, singlesuction, ASTM B 584 cast bronze, and keyed to shaft.

3. Wearing Rings: Removable bronze casing ring.4. Pump Shaft and Sleeve: Ground and polished steel shaft with bronze sleeve

and integral thrust bearing. Include flinger on motor shaft between motorand seals to prevent liquid that leaks past pump seals from entering themotor bearings.

5. Mechanical Seals: Carbon-steel rotating ring, stainless-steel spring, ceramicseat, and flexible bellows and gasket.

6. Motor: Directly mounted to pump casing, with lifting and supporting lugsin top of motor enclosure.

2.5 END-SUCTION PUMPS

A. General Description: Centrifugal, close-coupled, end-suction, single-stage, all-bronze, radially split case design, rated for 175-psig (1200kPa) working pressureand 225 deg F (107 deg C) continuous water temperature. Include back-pull-outdesign, except where other design is indicated.

B. Casing: Bronze, with flanged piping connections, and threaded gage tappings atinlet and outlet flange connections.

C. Impeller: ASTM B 584 cast bronze, statically and dynamically balanced, closed,overhung, single suction, keyed to shaft, and secured by a locking cap screw.


10/16/0070

D. Wearing Rings: Replaceable bronze casing ring.

E. Pump Shaft and Sleeve Bearings: Steel shaft with bronze sleeve. Include flinger onmotor shaft between motor and seals to prevent liquid that leaks past pump sealsfrom entering the motor bearings.

F. Mechanical Seals: Carbon-steel rotating ring, stainless-steel spring, ceramic seat,and flexible bellows and gasket.

G. Motor: Directly mounted to pump casing with supporting legs as an integral part ofmotor enclosure.

H. Include the following pump specialties with end connections matching pump andpiping where indicated:

1. Suction Diffuser: Angle or straight pattern, 175-psig (1200kPa) pressurerating, cast-iron body and end cap, pump-inlet fitting. Include bronzestartup and bronze or stainless-steel permanent strainers; bronze or stainless-steel straightening vanes; drain plug; and factory- or field-fabricatedsupport.

2.6 GENERAL-DUTY VALVES

A. Refer to Division 15 Section "Valves" for general-duty gate, ball, butterfly, globe,and check valves.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas, equipment foundations, and conditions with Installer present forcompliance with requirements for installation and other conditions affectingperformance of plumbing pumps. Do not proceed with installation untilunsatisfactory conditions have been corrected.

B. Examine roughing-in of plumbing piping systems to verify actual locations ofpiping connections prior to pump installation.

3.2 CONCRETE

A. Install concrete bases for base-mounted pumps.

3.3 INSTALLATION

A. Install pumps according to the manufacturer's written installation instructions.


10/16/00 71

B. Install pumps in locations indicated and arrange to provide access for periodicmaintenance, including removal of motors, impellers, couplings, and accessories.

C. Support pumps and piping so that weight of piping is not supported by pumps.

D. Suspend horizontal, in-line pumps independent from piping. Use continuous-threadhanger rods and vibration isolation hangers of sufficient size to support weight ofpumps. Fabricate brackets or supports as required for pumps.

E. Suspend vertical, in-line pumps independent from piping. Use continuous-threadhanger rods and vibration isolation hangers of sufficient size to support weight ofpumps.

F. End-Suction Pumps: Install on concrete bases.

3.4 CONNECTIONS

A. Connect piping to pumps as indicated. Install valves that are same size as pipingconnecting to pumps.

B. Install suction and discharge pipe sizes equal to or greater than diameter of pumpnozzles.

C. Install shutoff valve and strainer on suction side of in-line pumps and circulators.

D. Install shutoff valve and suction diffuser on suction side of end-suction pumps.

E. Install check valve and throttling valve on discharge side of in-line pumps andcirculators.

F. Install check valve and throttling valve on discharge side of end-suction pumps.

G. Install flexible pipe connectors on suction and discharge of end-suction pumps.Install flexible pipe connectors upstream from pump suction diffusers and strainers,and between pump casings and discharge valves.

H. Install pressure gage across suction and discharge of each pump. Install at integralpressure gage tappings where provided and include isolation valve in supply anddischarge line to gage.

I. Electrical power and control wiring and connections are specified in Division 16Sections.

3.5 FIELD QUALITY CONTROL

A. Check suction piping connections for tightness to avoid drawing air into pumps.

B. Clean strainers on pump suction piping.


10/16/0072

C. Pump Controls: Set pump controls for automatic start, stop, and alarm operation.

3.6 COMMISSIONING

A. Final Checks Before Startup: Perform the following preventive maintenanceoperations and checks before startup:

1. Lubricate oil-lubricated-type bearings.2. Remove grease-lubricated bearing covers and fill with new lubricant

according to manufacturer's recommendations.3. Disconnect couplings and check motors for proper rotation. Rotation shall

match direction of rotation marked on pump casing.4. Check that pumps are free to rotate by hand.. Do not operate pump if bound

or if it drags even slightly until cause of trouble is determined and corrected.5. Check that pump controls are correct for required application.

B. Starting procedure for pumps with shutoff power not exceeding safe motor power:

1. Prime pumps by opening suction valves and closing drains, and preparepumps for operation.

2. Open the liquid supply valves if pumps are so fitted.3. Start motors.4. Open discharge valves slowly.5. Check general mechanical operation of pumps and motors.6. Remove startup strainers from suction diffusers and install permanent

strainers after system has been in operation.


10/16/2000 73

SECTION 15457 - WATER SOFTENERS

THIS SECTION USES TERM "ARCHITECT." CHANGE TERM AS NECESSARY TOMATCH ACTUAL TERM USED TO IDENTIFY DESIGN PROFESSIONAL ASDEFINED IN GENERAL AND SUPPLEMENTARY CONDITIONS.

PART 1 - GENERAL


A. Drawings and general provisions of Contract, including General andSupplementary Conditions and Division 1 Specification Sections, apply to thisSection.

B. Requirements of the following Division 15 Sections apply to this Section:

1. "Basic Mechanical Requirements."2. "Basic Mechanical Materials and Methods."

1.2 SUMMARY

A. This Section includes commercial water softening equipment.

1. Control wiring between field-installed controls, indicating devices, and unitcontrol panels.


1. Division 3 Section "Concrete Work" for formwork, reinforcement, andconcrete for concrete bases.

1.3 SUBMITTALS

A. General: Submit the following in accordance with Conditions of Contract andDivision 1 Specification Sections.

1. Product data including rated capacities of selected models, weights(shipping, installed, and operating), furnished specialties, and accessories.

2. Wiring diagrams detailing field-installed wiring for controls.3. Maintenance data for inclusion in Operating and Maintenance Manual

specified in Division 1 and Division 15 Section "Basic MechanicalRequirements."


15457 WATER SOFTENERS

10/16/0074

A. ASME Code Compliance: Provide water softener tanks that comply with ASMEBoiler and Pressure Vessel Code, Section VIII, Division 1, and bear the appropriatecode symbol.

B. NSF Standard: Provide water softeners constructed in accordance with NSF No. 44"Standard for Cation Exchange Water Softeners."

C. Mineral Standard: Provide mineral (resin) products acceptable under state and localpublic health control regulations.

D. Electrical Component Standard: Provide components complying with NFPA 70"National Electrical Code."

E. Listing and Labeling: Provide water softening equipment that is listed or labeled.

1. The terms "listed" and "labeled" shall be as defined in the NationalElectrical Code, Article 100.


F. Manufacturer/Product Selection: The Drawings indicate sizes, profiles, anddimensional requirements of water softeners. Water softeners having equalperformance characteristics with deviations from indicated dimensions and profilesmay be considered, provided deviations do not change the design concept orintended performance. The burden of proof of equality is on the proposer.

G. Manufacturer/Product Selection: The Drawings indicate sizes, profiles, anddimensional requirements of water softeners and are based on the specific types andmodels indicated. Water softeners having equal performance characteristics byother manufacturers may be considered provided that deviations in dimensions andprofiles do not change the design concept or intended performance as judged by theArchitect. The burden of proof of equality is on the proposer.

1.5 WARRANTY

A. Provide standard product warranty for water softeners covering:

1. Attrition loss of mineral not to exceed 3 percent per year for first 3 years.2. Mineral not to be washed out of system during service run or backwashing

period.3. Effluent turbidity not to be greater and color not to be darker than incoming

water.4. Underdrain system, gravel, and mineral not to become fouled, either with

turbidity or by dirt, rust, or scale from softening system, or present in softwater, while operating as noted in manufacturer's operating instructions.

1.6 MAINTENANCE SERVICE


10/16/00 75

A. Agreement to Maintain: Prior to Substantial Completion, submit 4 copies ofManufacturer's "Agreement for Continued Service and Maintenance" for watersoftener, for Owner's acceptance. Offer terms and conditions for furnishingchemicals and providing continued testing and servicing to include replacingmaterials and equipment. Term of agreement shall be for 1 year with option forone-year renewal.

1.7 EXTRA MATERIALS

A. Furnish extra materials listed below, matching installed products, packaged withprotective covering for storage, and identified with labels clearly describingcontents.

1. Salt: Furnish salt in total quantity of not less than 4 times original brine tankload, and not less than 1000 lb. Deliver in 50-lb bags on pallets. Storewhere directed by Owner.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, manufacturersoffering products that may be incorporated in the Work include, but are not limitedto, the following:

B. Manufacturers: Subject to compliance with requirements, provide products by oneof the following:

1. A.T.S. Sales, Inc.2. Bruner Corp.3. Culligan International Co.4. Di-Sep Systems International, Inc.5. Ionics, Inc.6. Permutit Co., Inc.; Sub. of Zurn Industries, Inc.7. RainSoft Water Conditioning Co.

2.2 GENERAL DESCRIPTION

A. Factory-assembled, pressure-type, commercial water softeners having capacitiesand for electrical characteristics indicated.

2.3 SOFTENER TANKS

A. General: Single or multiple tanks as indicated, to provide total capacity of system.


10/16/0076

B. Steel Tanks: Electric-welded, pressure-vessel quality, low carbon steel, ASMElabeled for 100 psig, and hydrostatically tested at 150 psig.

1. Tanks Less Than 36 Inches In Diameter: With two 4 inch-diameter or 4- by6-inch elliptical handholes, one in top head and one in lower side wall.

2. Tanks 36 Inches In Diameter and Larger: With minimum of 11- by 15-inchmanhole in top head.

3. Support Legs: Constructed of structural steel, welded to lower tank head.4. Finish: Hot-dip galvanized, exterior and interior of tank after fabrication.5. Finish: Spray-painted exterior with rust-resistant prime coat, 2 to 3 mils dry

film thickness. Sandblasted tank interior and lined with epoxy polyamidecoating, 8 to 10 mils dry film thickness.

C. Fiberglass Tanks: Fiberglass, ASME labeled for 100 psig, and hydrostaticallytested at 150 psig.

1. Tank Liner: Polyethylene, ABS, or other material suitable for potablewater.

D. Freeboard: Provide minimum freeboard of 50 percent for backwash expansionabove normal ion exchange mineral bed level.

2.4 SOFTENER TANK DISTRIBUTION SYSTEMS

A. Upper Distribution: Single point-type upper distribution system, fabricated ofSchedule 40, galvanized steel pipe and fittings.

B. Lower Distribution: Hub and radial-arm type or header-lateral type lowerdistribution system, fabricated of Schedule 40, polyvinyl chloride (PVC) pipe withindividual, fine-slotted, nonclogging polyethylene (PE) strainers, arranged for evenflow distribution through resin bed.

2.5 CHEMICALS

A. Exchange Resin: High-capacity exchange resin of sulfonated polystyrene, stableover entire pH range with good resistance to bead fracture from attrition or shock.Provide resin having capacity of removing 30,000 grains of hardness as calciumcarbonate, per cubic foot of resin, when regenerated with 15 pounds of salt.

B. Salt: High-purity pellet salt. Rock salt and granulated salt forms are notacceptable.

2.6 BRINE TANKS

A. Description: Single brine measuring and dry salt storage tank of sufficient size forat least 4 regenerations at full salting. Tank shall be fabricated of 3/16-inch-thickfiberglass or 3/8-inch-thick molded polyethylene, with cover; equipped with salt


10/16/00 77

platform and screen, float-operated, plastic-fitted, brine valve for automatic controlof brine withdrawn and fresh water refill, and brine tubing and fittings.

2.7 CONTROLS

A. General Description: Provide cycle controls, factory mounted and wired on units,that incorporate adjustable duration of various steps of regeneration. Provide push-button start as well as complete manual operation. Provide electric time clock andswitch for fully automatic operation adjustable to initiate regeneration at any hourof day and any day of week or at fixed intervals.

B. Sequence of Operation: Program multiport pilot control valve to automaticallypressure actuate main operating valve through steps of regeneration and return toservice. Provide pointer on pilot valve to indicate cycle of operation. Providemeans of manual operation of pilot control valve in event of power failure.

C. Main Operating Valve: Industrial, automatic, multiport, diaphragm- type valvewith following features:

1. Slow opening and closing (nonslam operation).2. Diaphragm guiding on full perimeter from full open to full shut.3. Dissimilar metals isolated within valve.4. Internal automatic self-adjusting brine injector to draw brine and rinse at

constant rate independent of pressure.5. Single-unit valves with internal automatic bypass of untreated water during

regeneration.6. Soft water sampling cock.7. Requires no special tools for service.

D. Flow Control: Automatic flow controller to control proper backwash and flushrates over wide variations in operating pressures; requires no field adjustments.

E. Meter Controls: Equip each softener tank with signal register head water meter,that will produce electrical signal to indicate need for regeneration upon reachinghand-set gallonage. Design so signal will continue until reset.

F. Meter Controls: Equip each softener tank with automatic reset head water meterthat will electrically activate signal-activated cycle controller to initiate regenerationat preset gallonage. Design so head will automatically reset to preset gallonage fornext service run.

1. Provide electrical lockouts on multiple units to prevent more than one unitfrom regenerating simultaneously.

H. Meter Controls: Equip twin softener with single water meter in common outletheader that will automatically regenerate softener at preset gallonage and divertflow to other unit.


10/16/0078

2.8 ACCESSORIES

A. Pressure gages for hard water inlet and soft water outlet.

B. Sampling cocks for hard water inlet and soft water outlet for each tank.

C. Position indicator to indicate position of main operating valve.

2.9 WATER TESTING SETS

A. Provide complete water testing set for each water softener, for hardness tests, inmetal container suitable for wall mounting.

2.10 CONCRETE BASES

A. Construct concrete equipment bases of dimensions indicated.

B. Concrete: Portland cement mix, 4000 psi:

1. Cement: ASTM C 150, Type I.2. Fine Aggregate: ASTM C 33, sand.3. Coarse Aggregate: ASTM C 33, crushed gravel.

C. Reinforcement: Steel conforming to the following:

1. Fabric: ASTM A 185, welded wire fabric, plain.2. Reinforcement Bars: ASTM A 615, Grade 60, deformed.

PART 3 - EXECUTION

3.1 CONCRETE BASES

A. Form concrete equipment bases having permanent steel frame, using steel channelsconforming to ASTM A 36, size and location as indicated. Miter and weld cornersand provide cross bracing. Anchor or key to floor slab.

B. Install reinforcing bars tied to frame, and place anchor bolts and sleeves usingmanufacturer's installation template.

C. Form concrete equipment bases using framing lumber with form releasecompounds. Chamfer top edges and corners.

D. Install reinforcing bars, and place anchor bolts and sleeves using manufacturer'sinstallation template.

E. Place concrete and allow to cure before installation of equipment.


10/16/00 79

F. Clean exposed steel frames and apply 2 coats of rust-preventative metal primer and2 coats of exterior, gloss, alkyd enamel in color selected by the Architect.

3.2 WATER SOFTENER INSTALLATION

A. Install water softening equipment level and plumb, on concrete bases in accordancewith manufacturer's written instructions, layout drawings, the original design, andreferenced standards. Maintain manufacturer's recommended clearances. Orient socontrols and devices needing servicing are accessible.

B. Install pressure gages on water inlet and outlet piping of each water softener.Pressure gages are specified in Division 15 Section "Meters and Gages."

C. Install water testing sets near water softeners, wall-mounted, where indicated.

3.3 CONNECTIONS

A. Water Distribution Piping: Piping installation requirements are specified inDivision 15 Section "Water Distribution Piping." The Drawings indicate thegeneral arrangement of piping, fittings, and specialties. The following are specificconnection requirements:

1. Install piping adjacent to equipment to allow servicing and maintenance.2. Connect water piping to units with shutoff valves and unions and provide

full-size valved bypass around unit.a. Where water connections are made with dissimilar metal water

distribution piping, make connections with dielectric fittings ordielectric unions specified in Division 15 Section "Basic PipingMaterials and Methods."

3. Install drains as indirect wastes to spill into open drains or over floor drains.

B. Install brine lines and fittings furnished by manufacturer but not specified to befactory mounted.

C. Electrical Connections: Power wiring, including disconnect switches, is specifiedin Division 16.

1. Grounding: Connect unit components to ground in accordance with theNational Electrical Code.


A. Sample water softener effluent at one week intervals after start-up, for period of 3weeks and prepare certified test report for each required water performancecharacteristic. Comply with the following ASTM standards:

1. ASTM D 859-80, "Test Methods for Silica in Water."


10/16/0080

2. ASTM D 1067-82, "Test Methods for Acidity or Alkalinity of Water."3. ASTM D 1068-87, "Test Methods for Iron in Water."4. ASTM D 1126-86, "Test Methods for Hardness in Water."5. ASTM D 1129-82b, "Definitions of Terms Relating to Water."6. ASTM D 1888-78, "Test Methods for Particulate and Dissolved Matter in

Water."7. ASTM D 3370-82, "Practices for Sampling Water."

3.5 DEMONSTRATION

A. Start-Up Services: Provide the services of a factory-authorized servicerepresentative to provide start-up service and to demonstrate and train Owner'smaintenance personnel as specified below.

1. Test and adjust controls and safeties. Replace damaged and malfunctioningcontrols and equipment.

2. Train Owner's maintenance personnel on procedures and schedules relatedto start-up and shutdown, troubleshooting, servicing, and preventativemaintenance. Provide log sheets for recording this information.

3. Review data in Operating and Maintenance Manuals. Refer to Division 1Section "Project Closeout."

4. Schedule training with at least 7 days' advance notice.

3.6 COMMISSIONING

A. Perform the following before start-up final checks:

1. Water piping systems tests completed.2. Load Softener Tank: Install gravel to cover lower distribution system, add

water; smooth gravel surface and add softening mineral.3. Load Brine Tank: Add water and fill tank with salt.4. Check for piping connections leaks.5. Test operation of safety controls and devices.

B. Perform the following start-up procedures:

1. Energize circuits.2. Adjust operating controls.3. Fill out initial log sheet.


10/16/2000 81

SECTION 15510 - HYDRONIC PIPING

PART 1 - GENERAL


A. The following Division-15 Sections apply to this Section:

1. Basic Mechanical Requirements.2. Basic Mechanical Materials and Methods.3. General Duty Valves.4. Support and Anchors.

1.2 SUMMARY

A. This Section includes piping systems and specialties for hot water heating, chilledwater cooling, condenser water, make-up water for these systems, blow-down drainlines, and condensate drain piping.

1.3 SUBMITTALS

A. Product Data, three copies required, including rated capacities, weights (shippingand installed) of furnished specialties and accessories including installationinstructions.

B. Maintenance Data, three copies required, for specialties and valves, for inclusion inoperating and maintenance manuals.


A. Regulatory Requirements:

1. ASME B 31.9 "Building Services Piping" for materials, products, andinstallation. Safety valves and pressure vessels shall bear the appropriateASME label.

2. Stamp air separators and compression tanks to comply with ASME Boilerand Pressure Vessel Code, Section VIII, Division 1.

3. ASME "Boiler and Pressure Vessel Code", Section IX, "Welding andBrazing Qualification".

4. BOCA Basic National Mechanical Code.

PART 2 - PRODUCTS

15510 HYDRONIC PIPING

10/16/0082

2.1 MANUFACTURERS

A. Manufacturer: Subject to compliance with requirements, provide hydronic pipingsystem products from one of the following:

1. Safety Relief Valves:a. Spence.b. Bell & Gossett ITTc. Watts Regulator Co.

2. Pressure Reducing Valves:a. Spence.b. Armstrong Pumps, Inc.c. Bell & Gossett ITT; Fluid Handling Div.

3. Air Separators:a. Amtrol, Inc.b. Armstrong Pumps, Inc.c. Bell & Gossett ITT; Fluid Handling Div.d. Taco, Inc.

4. Compression Tanks:a. Amtrol, Inc.b. Armstrong Pumps, Inc.c. Bell & Gossett ITT; Fluid Handling Div.

5. Diaphragm-Type Compression Tanks:a. Amtrol, Inc.b. Armstrong Pumps, Inc.c. Bell & Gossett ITT

6. Pump Suction Diffusers:a. Bell & Gossett ITT; Fluid Handling Div.

7. Calibrated Balance Valves: a. Bell & Gossett ITT; Fluids Handling Div.

2.2 PIPE AND TUBING MATERIALS

A. Temper Copper Tubing: ASTM B 88, Type L.

B. Steel Pipe: ASTM A 120, Schedule 40, seamless, black steel pipe.

2.3 FITTINGS

A. Cast-Iron Threaded Fittings: ANSI B16.4, Class 125, standard pattern, for threadedjoints. Threads shall conform to ANSI B1.20.1.

B. Malleable-Iron Threaded Fittings: ANSI B16.3, Class 150, standard pattern, forthreaded joints. Threads shall conform to ANSI B1.20.1.

C. Steel Fittings: ASTM A 234, seamless or welded, for welded joints.


10/16/00 83

D. Wrought-Copper Fittings: ANSI B16.22, streamlined pattern.

E. Steel Flanges and Flanged Fittings: ANSI B16.5, including bolts, nuts, and gasketsof the following material group, end connection and facing:

1. Material Group: 1.1.2. End Connections: Butt Welding.3. Facings: Raised face.

F. Unions: ANSI B16.39 malleable-iron, Class 150, hexagonal stock, with ball-and-socket joints, metal-to-metal bronze seating surfaces; female threaded ends.Threads shall conform to ANSI B1.20.1.

G. Dielectric Unions: Threaded or soldered end connections for the pipe materials inwhich installed; constructed to isolate dissimilar metals, prevent galvanic action,and prevent corrosion.

H. Flexible Connectors: Stainless steel bellows with woven flexible bronze wirereinforcing protective jacket; minimum 150 psig working pressure, maximum 250deg F operating temperature. Connectors shall have flanged or threaded endconnections to match equipment connected; and shall be capable of 3/4 inchmisalignment.


A. Solder Filler Metals: ASTM B 32, 95-5 Tin-Antimony, for condenser water, chilledwater,hot water heating, low pressure steam piping, make-up water and drainpiping.

B. Welding Materials: Comply, with Section II, Part C. ASME Boiler and PressureVessel Code for welding materials appropriate for the wall thickness and chemicalanalysis of the pipe being welded.

E. Gasket Material: thickness, material, and type suitable for fluid to be handled, anddesign temperatures and pressures.

2.5 GENERAL DUTY VALVES

A. General duty valves (i.e., gate, globe, check, ball, and butterfly valves) are specifiedin Division 15 Section "General Duty Valves." Special duty valves are specifiedbelow by their generic name; refer to Part 3 Article "VALVE APPLICATION" forspecific uses and applications for each valve specified.

2.6 SPECIAL DUTY VALVES


10/16/0084

A. Pressure Reducing Valves: diaphragm operated, cast-iron or brass body valve, withlow inlet pressure check valve, inlet strainer removable without system shut-down,and noncorrosive valve seat and stem. Select valve size, capacity, and operatingpressure to suit system. Valve shall be factory-set at operating pressure and havethe capability for field adjustment.

B. Safety Relief Valves: 125 psig working pressure and 250 deg F maximumoperating temperature; designed, manufactured, tested, and labeled in accordancewith the requirements of Section IV of the ASME Boiler and Pressure Vessel Code.Valve body shall be cast-iron, with all wetted internal working parts made of brassand rubber. Select valve to suit actual system pressure and Btu capacity.

2.7 HYDRONIC SPECIALTIES

A. Compression Tanks: size and number as indicated; construct of welded carbonsteel for 125 psig working pressure, 375 deg F maximum operating temperature.Provide taps in bottom of tank for tank fitting; taps in end of tank for gauge glass.Tank with taps constructed shall be tested and labeled in accordance with ASMEPressure Vessel Code, Section VIII, Division 1. Furnish with the following fittingsand accessories:

1. Air Control Tank Fitting: cast-iron body, copper-plated tube, brass venttube plug, and stainless steel ball check (100 gallon unit only); sized forcompression tank diameter. Design tank fittings for 125 psig workingpressure and 250 deg F maximum operating temperature.

2. Tank Drain Fitting: brass body, nonferrous internal parts; 125 psig workingpressure and 240 deg F maximum operating temperature. Fitting shall bedesigned to admit air to the compression tank and drain water, plus close offthe system.

3. Gauge Glass: full height and have dual manual shutoff valves, 3/4 inchdiameter gauge glass, and slotted metal glass guard.

B. Diaphragm-Type Compression Tanks: size and number as indicated; construct ofwelded carbon steel for 125 psig working pressure, 375 deg F maximum operatingtemperature. Separate air charge from system water to maintain design expansioncapacity, by means of a flexible diaphragm securely sealed into tank. Provide tapsfor pressure gauge and air charging fitting, and drain fitting. Support vertical tankswith steel legs or base; support horizontal tanks with steel saddles. Tank, with tapsand supports, shall be constructed, tested, and labeled in accordance with ASMEPressure Vessel Code, Section VIII, Division 1.

C. Air separator: welded black steel; ASME constructed and labeled for minimum 125psig water working pressure and 375 F operating temperature; perforated stainlesssteel air collector tube designed to direct released air into compression tank;tangential inlet and outlet connections; screwed connections up to and including 2"NPS; flanged connections for 1-1/2" NPS and above; threaded blowdownconnection; sized as indicated for full system flow capacity.


10/16/00 85

D. Pump Suction Diffusers: cast-iron body, with threaded connections for 2 inch andsmaller, flanged connections for 2-1/2 inch and larger; 175 psig working pressure,300 deg F maximum operating temperature; and complete with the followingfeatures:

1. Inlet vanes with length 2-1/2 times pump suction diameter or greater.2. Cylinder strainer with 3/16 inch diameter openings with total free area equal

to or greater than 5 times cross-sectional area of pump suction, designed towithstand pressure differential equal to pump shutoff head.

3. Disposable fine mesh strainer to fit over cylinder strainer.4. Permanent magnet, located in flow stream, removable for cleaning.5. Adjustable foot support, designed to carry weight of suction piping.6. Blowdown tapping in bottom; gauge tapping in side.

E. Calibrated Balance Valves: Bronze body/brass ball construction with TFE seatings;differential pressure readout ports with internal EPT insert and check valve, ¼”drain/purge port; leak tight closure and lockable memory stop; 2” and smaller sweatconnection, 200 psig at 250 degrees F rating. Valves 21/2” and larger shall beflanged with cast iron bodies rated at 175 psig at 250 degrees F.

PART 3 - EXECUTION


A. Install Type L, drawn copper tubing with wrought copper fittings and solder jointsfor 2 inch and smaller, above ground, within building. Install Type K, annealedtemper copper tubing for 2 inch and smaller without joints, below ground or withinslabs.

B. Install steel pipe with threaded joints and fittings for 2 inch and smaller, and withwelded joints for 2-1/2 inch and larger.

3.2 PIPING INSTALLATIONS

A. Locations and Arrangements: Drawings (plans, schematics, and diagrams) indicatethe general location and arrangement of piping systems. Locations andarrangements of piping take into consideration pipe sizing and friction loss,expansion, pump sizing, and other design considerations. As far as practical, installpiping as indicated.

B. Use fittings for all changes in direction and all branch connections.

C. Install exposed piping at right angles or parallel to building walls. Diagonal runsare not permitted unless expressly indicated.

D. Conceal all pipe installations in walls, pipe chases, utility spaces, above ceilings,below grade or floors, unless indicated to be exposed to view.


10/16/0086

E. Install piping tight to slabs, beams, joists, columns, walls, and other permanentelements of the building. Provide space to permit insulation applications, with 1"clearance outside the insulation. Allow sufficient space above removable ceilingpanels to allow for panel removal.

F. Locate groups of pipes parallel to each other, spaced to permit applying insulationand servicing of valves.

G. Install drains at low points to mains, risers, and branch lines consisting of a teefitting, 3/4" ball valve, and short 3/4" threaded nipple and cap.

H. Exterior Wall Penetrations: Seal pipe penetrations through exterior walls usingsleeves and mechanical sleeve seals. Pipe sleeves smaller than 6 inch shall be steel;pipe sleeves 6 inch and larger shall be sheet metal.

I. Fire Barrier Penetrations: Where pipes pass through fire rated walls, partitions,ceilings, and floors, maintain the fire rated integrity. Refer to Division 7 for specialsealers and materials.

J. Make reductions in pipe sizes using eccentric reducer fitting installed with the levelside up.

K. Install unions in pipes 2 inch and smaller, adjacent to each valve, at finalconnections each piece of equipment, and elsewhere as indicated. Unions are notrequired on flanged devices.

L. Install dielectric unions to join dissimilar metals.

M. Install flanges on valves, apparatus, and equipment having 2-1/2 inch and largerconnections.

N. Install flexible connectors at inlet and discharge connections to pumps (exceptinline pumps) and other vibration producing equipment.

O. Anchor piping to ensure proper direction of expansion and contraction.


A. General: Hanger, supports, and anchors devices are specified in Division 15Section "SUPPORTS AND ANCHORS."

B. Install the following pipe attachments:

1. Adjustable steel clevis hangers for individual horizontal runs less than 20feet in length.

2. Adjustable roller hangers and spring hangers for individual horizontal runs20 feet or longer.

3. Pipe roller complete - MSS Type 44 for multiple horizontal runs, 20 feet orlonger, supported on a trapeze.


10/16/00 87

C. Hangers minimum rod sizes and maximum spacing are identified in Division 15Section “Supports and Anchors” or as otherwise stipulated by design professional.

D. Support vertical runs at each floor.

3.4 PIPE JOINT CONSTRUCTION

A. Soldered Joints: Comply with the procedures contained in the AWS "SolderingManual."

B. Brazed Joints: Comply with the procedures contained in the AWS "BrazingManual."

C. Threaded Joints: Conform to ANSI B1.20.1, tapered pipe threads for field cutthreads. Join pipe fittings and valves as follows:



(except where dry seal threading is specified).4. Assemble joint wrench tight. Wrench on valve shall be on the valve end

into which the pipe is being threaded.a. Damaged Threads: Do not use pipe with threads which are corroded

or damaged. If a weld opens during cutting or threading operations,that portion of pipe shall not be used.

D. Welded Joints: Comply with the requirement in ASME Code B31.9-"BuildingServices Piping."

E. Flanged Joints: Align flanged surfaces parallel. Assemble joints by sequencingbolt tightening to make initial contact of flanges and gaskets as flat and parallel aspossible. Use suitable lubricants on bolt threads. Tighten bolts gradually anduniformly using torque wrench.

3.5 VALVE APPLICATIONS

A. General Duty Valve Applications:1. Shut-off duty: use ball, and butterfly valves2. Throttling duty: use ball, and butterfly valves3. Install shut-off duty valves at each branch connection to supply mains, at

supply connection to each piece of equipment, and elsewhere as indicated.

B. Install calibrated balance valves on the outlet of each heating or cooling elementand elsewhere as required to facilitate system balancing.


10/16/0088

C. Install check valves on each pump discharge and elsewhere as required to controlflow direction.

D. Install safety relief valves on hot water generators, and elsewhere as required byASME Boiler and Pressure Vessel Code. Pipe discharge to floor without valves.Comply with ASME Boiler and Pressure Vessel Code Section VIII, Division 1 forinstallation requirements.

E. Install manual ball valve vents a high points in system, at heat transfer coils andelswhere as required to vent air from system.

3.6 HYDRONIC SPECIALTIES INSTALLATION

A. Install manual air vents at high points in the system, at heat transfer coils, andelsewhere as required for system air venting. Use tee fitting with ball valve andhose fitting (all ¾” size).

B. Install inline air separators in pump suction lines. Run piping to compression tankwith 1/4 inch per foot (2 percent) upward slope towards tank. Install drain valve onunits 2 inch and larger and run to drain.

C. Install pump suction diffusers on pump suction inlet, adjust foot support to carryweight of suction piping. Install nipple and ball valve in blowdown connection; runto nearest drain.

D. Install compression tanks above air separator. Install gauge glass and cocks on endof tank. Install tank fitting in tank bottom and charge tank. Use manual vent forinitial fill to establish proper water level in tank.

1. Support tank as detailed on the Drawings. In the absence of details providesupport from the floor or structure above sufficient for the weight of thetank, piping connections, and fittings, plus weight of water assuming a fulltank of water. Do not overload building components and structuralmembers.

E. Install diaphragm-type compression tanks on floor or as indicated. Vent and purgeair from hydronic system, charge tank with proper air charge to suit system designrequirements.


A. Testing : Test hydronic as follows:

1. Leave joints including welds uninsulated and exposed for examinationduring the test.


10/16/00 89

2. Provide temporary restraints for expansion joints which cannot sustain thereactions due to test pressure. If temporary restraints are not practical,isolate expansion joints from testing.

3. Flush system with clear water. Clean strainers.4. Isolate equipment that is not to be subjected to the test pressure from the

piping. If a valve is used to isolate the equipment, its closure shall becapable of sealing against the test pressure without damage to the valve.Flanged joints at which blinds are inserted to isolate equipment need not betested.

5. Install relief valve set at a pressure no more than 1/3 higher than the testpressure, to protect against damage by expansion of liquid or other source ofoverpressure during the test.

B. Testing: Test hydronic piping as follows:

1. Subject piping system to a hydrostatic test pressure which at every point inthe system is not less than 1.5 times the design pressure. The test pressureshall not exceed the maximum pressure for any vessel, pump, valve, orother component in the system under test.

2. After the hydrostatic test pressure has been applied for at least 10 minutes,examine piping, joints, and connections for leakage.

3. Use ambient water as testing medium, except where there is risk of damagedue to pressure


A. Clean and flush hydronic piping systems. Remove, clean, and replace strainerscreens. After cleaning and flushing hydronic piping system, but before balancing,remove disposable fine mesh strainers in pump suction diffusers.

B. Mark calibrated name plates of pump discharge valves after hydronic systembalancing has been completed, to permanently indicate final balanced position.


10/16/200090

SECTION 15520 - STEAM AND CONDENSATE PIPING

PART 1 - GENERAL


A. The requirements of the following Division-15 Sections apply to this Section:

1. Basic Mechanical Requirements.2. Basic Mechanical Materials and Methods.3. General Duty Valves.4. Supports and Anchors.

1.2 SUMMARY

A. Includes low pressure steam and condensate piping and specialties for buildingHVAC and domestic water heating systems. Steam supply pressure is nominally 60PSIG; reduced to 15 PSIG.

1.3 SUBMITTALS

A. Product data, 6 copies required.

B. Shop drawings, 3 copies required.

C. Maintenance data, 3 copies required.


A. Regulatory Requirements:

1. ASME B 31.9 "Building Services Piping: for materials, products, andinstallation. Safety valves and pressure vessels shall bear the appropriateASME label.

2. ASME "Boiler and Pressure Vessel Code", Section IX, "Welding andBrazing Qualification" for qualifications for welding processes andoperators.

3. BOCA Basic National Mechanical Code.

2.1 MANUFACTURERS

PART 2 - PRODUCTS

15520 STEAM AND CONDENSATE PIPING

10/16/00 91

A. Manufacturer: Steam and condensate piping system products from one of thefollowing:

1. Safety Pressure Relief Valves:a. Armstrong Machine Worksb. Spence Engg. Co.c. Lunkenheimer Co.

2. Pressure Reducing Valves:a. Armstrong Machine Worksb. Hoffman Specialty ITT; Fluid Handling Div.e. Spence Engineering Co., Inc.

3. Steam Traps:a. Armstrong Machine Works.

4. Strainers:a. Armstrong Machine Works.b. Hoffman Specialty ITT; Fluid Handling Div.c. Mueller Co.

2.2 PIPE AND TUBE MATERIALS

A. General: Refer to Part 3 below, Article "PIPE APPLICATION" for identificationof systems where the below specified pipe and fitting materials are used.

B. Steel Pipe: ASTM A 120, Schedule 40 and 80 for application as specified in Part 3below, seamless, black steel pipe, with beveled ends.

2.3 FITTINGS

A. Cast-Iron Threaded Fittings: ANSI B16.4, Class 125, standard pattern, for threadedjoints. Threads shall conform to ANSI B1.20.1.

B. Malleable-Iron Threaded Fittings: ANSI B16.3, Class 150, standard pattern, forthreaded joints. Threads shall conform to ANSI B1.20.1.

C. Steel Fittings: ASTM A 234, seamless or welded, for welded joints.

D. Cast-Iron Threaded Flanges: ANSI B16.1, Class 125; raised ground face, bolt holesspot faced. Threads shall conform to ANSI B1.20.1.

E. Steel Flanges and Flanged Fittings: ANSI B16.5, including bolts, nuts, and gasketsof the following material group, end connection and facing:

1. Material Group: 1.1.2. End Connections: Butt Welding.3. Facings: Raised face.


10/16/0092

F. Unions: ANSI B16.39, malleable iron, Class 150 hexagonal stock, with ball-and-socket joints, metal-to-metal bronze seating surfaces; female threaded ends.Threads shall conform to ANSI B1.20.1.

G. Dielectric Unions: Threaded end connections to suit steam and condensate service;constructed to isolate dissimilar metals, prevent galvanic action, and preventcorrosion.


A. Welding Materials: Comply, with Section II, Part C. ASME Boiler and PressureVessel Code for welding materials appropriate for the wall thickness and chemicalanalysis of the pipe being welded.

B. Pipe Flange Gasket Material: ANSI B16.21 full-faced for cast iron and cast bronzeflanges, and raised face for steel flanges. Thickness, material, and type suitable fordesign temperatures and pressures.

2.5 GENERAL DUTY VALVES

A. General duty valves (i.e., gate, globe, check, valves) are specified in Division 15Section "General Duty Valves". Special duty valves are specified in this Article bytheir generic name; refer to Part 3 below, Article "VALVE APPLICATION" forspecific uses and applications for each valve specified.

2.6 SAFETY VALVES

A. General: Select steam safety valves for full relief of capacity of equipment served,in accordance with ASME Boiler and Pressure Vessel Code. Furnish complete withcast iron drip-pan elbow having threaded inlet and outlet with threads (FPT)conforming to ANSI B1.20.1; sized for full size of safety valve outlet connection.

B. Cast-Iron Safety Valves: cast iron body and bronze seat, Class 250; forged copperalloy disc and nozzle; fully enclosed stainless steel spring having an adjustablepressure range and positive shut-off; threaded end connections for valves 2 inch andsmaller, raised face flanged inlet and threaded outlet connections for valves 2-1/2inch and larger. Factory-set valves to relieve at 10 psi above operating pressure.

2.7 PRESSURE REGULATING VALVES

A. General: Select pressure reducing valves of size, capacity, and pressure rating asscheduled. Factory-set for inlet and outlet pressures as indicated.

B. Valves Characteristics: Pilot-actuated, diaphragm type, with adjustable pressurerange and positive shut-off; cast iron body with flanged end connections, hardenedstainless steel trim, and replaceable valve head and seat. Provide main head stem


10/16/00 93

guide fitted with flushing and pressure arresting device. Provide cover over pilotdiaphragm for protection against dirt accumulation.

2.8 STEAM TRAPS

A. Float and Thermostatic Traps: ASTM A 278, Class 30 cast iron body and boltedcap; renewable, stainless steel float mechanism, with renewable, hardened stainlesssteel head and seat; balanced pressure thermostatic air vent made of stainless steelor monel bellows with stainless steel head and seat.

B. Inverted Bucket Traps: ASTM A 278, Class 30 cast iron body and cap, pressurerated for 250 psi; stainless steel head and seat; stainless steel valve retainer, lever,guide pin assembly, brass or stainless steel bucket.

1. Integral stainless steel inlet strainer within trap body.

2.9 STRAINERS

A. Y-Pattern Strainers: minimum 250 psig steam working pressure; cast iron bodyconforming to ASTM A 278, Class 30; threaded connections for 2 inch and smaller,flanged connections for 2-1/2 inch and larger; grade 18-8 stainless steel screen (20mesh for 2 inch and smaller, and manufacturer recommended perforations for sizes2-1/2 inch and larger); tapped blow-off with nipple, valve and plug.

PART 3 - EXECUTION


A. Install steel pipe with threaded joints and fittings for 2 inch and smaller, and withwelded joints for 2-1/2 inch and larger. Steam supply pipe shall be schedule 40.Condensate return pipe shall be schedule 80.


A. General Locations and Arrangements: Drawings, (plans, schematics, and diagrams)indicate the general location and arrangement of the piping systems. Location andarrangement of piping layout take into consideration pipe sizing and friction loss,expansion, pump sizing, and other design considerations. As far as practical, installpiping as indicated. Refer to individual system specifications for requirements forcoordination drawing submittals.

B. Use fittings for all changes in direction and all branch connections.

C. Conceal all pipe installations in walls, pipe chases, utility spaces, above ceilings,below grade or floors, unless indicated to be exposed to view.


10/16/0094

D. Install exposed piping at right angles or parallel to building walls. Diagonal runsare not permitted, unless expressly indicated.

E. Install piping free of sags or bends and with ample space between piping to permitproper insulation applications.

F. Install piping tight to slabs, beams, joists, columns, walls, and other permanentelements of the building. Provide space to permit insulation applications, with 1inch clearance outside the insulation. Allow sufficient space above removableceiling panels to allow for panel removal.

G. Locate groups of pipes parallel to each other, spaced to permit applying insulationand servicing of valves.

H. Install drains at low points in mains, risers, and branch lines consisting of a teefitting, 3/4 inch valve, and short 3/4 inch threaded nipple and cap.

I. Exterior Wall Penetrations: Where pipes pass through fire rated walls, partitions,ceilings, and floors, maintain the fire rated integrity.

J. Install steam supply piping at a uniform grade of 1/4 inch in ten feet downward inthe direction of flow.

K. Install condensate return piping at a uniform grade of 1/2 inch in ten feet downwardin the direction of flow.

L. Install branch connections to supply mains using 45 degree fittings in main withtake-off out the top of the main. Use of 90 degree "tee" fittings is permissible,where use of 45 degree fittings are not practical. Where the length of a branchtakeoff is less than 10 feet, pitch branch line down toward mains, 1/2 inch per 10feet.

M. Make reductions in pipe sizes using eccentric reducer fitting installed with the levelside down.

N. Install unions in pipes 2 inch and smaller, adjacent to each valve, at finalconnections to each piece of equipment, and elsewhere as indicated. Unions are notrequired on flanged devices.

O. Install flanges on valves, apparatus, and equipment having 2-1/2 inch and largerconnections.

P. Install flexible connectors at inlet and discharge connections to vibration producingequipment.

Q. Install strainers on the supply side of each control valve, pressure regulating valve,solenoid valve, traps, and elsewhere as indicated. Install 3/4 inch NPS nipple andball valve in blow down connection of strainers 2 inch and larger. Use same sizenipple and valve as blow-off connection of strainer.


10/16/00 95

R. Anchor piping to ensure proper direction of expansion and contraction. Installexpansion loops and joints as indicated on the Drawings and specified in Division-15 Section "Anchors and Supports."

S. Install drip legs at low points and natural drainage points in the system, such as atthe ends on mains, bottoms of risers, and ahead of pressure regulators, controlvalves, isolation valves, pipe bends, and expansion joints.

1. On straight runs with no natural drainage points, install drip legs at intervalsnot exceeding 200 feet where pipe is pitched down in the direction of thesteam flow and a maximum of 150 feet where the pipe is pitched up so thatcondensate flow is opposite of steam flow.

2. Size drip legs at vertical risers full size and extend beyond the rise. Sizedrip legs at other locations same diameter as the main. Provide an 18 inchdrip leg for steam mains smaller than 6 inch. In steam mains 6 inches andlarger, provide drip legs sized 2 pipe sizes smaller than the main, but notless than 4 inches.

3. Drip legs, dirt pockets, and strainer blowdowns shall be equipped with gatevalves to allow removal of dirt and scale.

4. Install steam traps close to drip legs.


A. General: Hanger, supports, and anchors devices are specified in Division 15Section "SUPPORTS AND ANCHORS." B. Install the following pipeattachments:


2. Adjustable roller hangers and spring hangers for individual horizontal runs20 feet or longer.

3. Pipe roller complete - MSS Type 44 for multiple horizontal runs, 20 feet orlonger, supported on a trapeze.


C. Install hangers with the minimum rod sizes and maximum spacing as identified indivision 15 section “supports and anchors.”



A. Welded Joints: Comply with the requirements in ASME Code B31.9 - "BuildingServices Piping."

B. Threaded Joints: Conform to ANSI B1.20.1, tapered pipe threads for field cutthreads. Join pipe, fittings, and valves as follows:


10/16/0096



(except where dry seal threading is specified).4. Assemble joint to appropriate thread depth. When using a wrench on valves

place the wrench on the valve end into which the pipe is being threaded.5. Damaged Threads: Do not use pipe with threads which are corroded or

otherwise damaged. If a weld opens during cutting or threading operations,that portion of pipe shall not be used.

C. Flanged Joints: Align flanged surfaces parallel. Assemble joints by sequencingbolt tightening to make initial contact of flanges and gaskets as flat and parallel aspossible. Use suitable lubricants on bolt threads. Tighten bolts gradually anduniformly to appropriate torque specified by the bolt manufacturer.

3.5 STEAM TRAP INSTALLATIONS

A. Install steam traps in accessible locations as close as possible to connectedequipment. Maximum allowable distance from equipment is 4 feet.

1. Unless otherwise indicated, install gate valve, strainer, and union upstreamfrom the trap; install union, check valve, and gate valve downstream fromtrap.

3.6 VALVE APPLICATIONS

A. General Duty Valve Applications: The Drawings indicate valve types to be used.Where specific valve types are not indicated, the following requirements apply:

1. Shut-off duty: use gate, valves2. Throttling duty: use globe valves3. Install shut-off duty valves at each branch connection to supply mains and

elsewhere as indicated.4. Install throttling duty valves at supply connection to each piece of

equipment and elsewhere as indicated.

B. Install angle pattern globe valves on the supply side of each wall mounted terminalunit. If unit has an enclosure, install the valve within the enclosure.

C. Install drain valves at low points in mains, risers, branch lines, and elsewhere asrequired for system drainage.

D. Install swing check valves as required to control flow direction, and to serve as"vacuum breakers."


10/16/00 97

3.7 PRESSURE REDUCING VALVE INSTALLATIONS

A. General: Install pressure reducing valves as required to regulate system pressure.Install in a location readily accessible for maintenance and inspection.

B. Size reducing valves to supply the maximum steam requirements of the heatingsystem or equipment indicated, at the indicated inlet and outlet pressures.

C. Provide bypass around each reducing valve, with a globe valve equal in size to thearea of the reducing valve seat ring.

D. Install gate valves and unions around each reducing valve to facilitate removal andrepair of reducing valves. Unions may be omitted for reducing valves with flangedconnections.

E. Install pressure gages on the low pressure side of each reducing valve and ahead ofthe shutoff valve plus one downstream for the shutoff valve.

1. On two-stage reducing stations, install a drip trap and pressure gageupstream from the second stage reducing valve.

F. Install strainers upstream for each reducing valve.

1. On two-stage reducing stations omit the strainer upstream from the secondstage, unless specifically indicated otherwise.

G. Install safety valves downstream from each reducing valve set at 5 psig higher thanthe reduced pressure when the reduced pressure is under 35 psig; and at 10 psighigher than the reduced pressure if the reduced pressure is above 35 psig or thefirst-stage of two-stage reducing.

3.8 SAFETY VALVE INSTALLATIONS

A. Install relief valves in accordance with and where required by ASME B 31.1 -"Power Piping." Pipe discharge to atmosphere outside the building, without stopvalves. Terminate vent pipe with screened vent cap. Install a drip pan elbow fittingadjacent to the safety valve. Pipe drip pan elbow drain connection to the nearestfloor drain without valves. Comply with ASME Boiler and Pressure Vessel Codefor installation requirements.

3.9 TERMINAL EQUIPMENT CONNECTIONS

A. Piping size for supply and return shall be same size as the equipment connections.

B. Install traps and control valves in accessible locations as close as possible to theequipment.


10/16/0098

C. Install bypass piping with globe valve around control valve. Where multiple,parallel control valves are installed, only one bypass is required.

D. Install vacuum breaker downstream from the control valve and bypass, and as closeas possible to the coil inlet connection.

E. Install pressure gages at coil inlet connections.

F. Pipe outlet from coils to drip leg. From drip leg, install an appropriate trap, sized at3 times the condensate load of the equipment, at 1/2 psig differential.


A. Preparation for testing: Prepare steam and condensate piping in accordance withASME B 31.9 and as follows:

1. Leave joints including welds uninsulated and exposed for examinationduring the test.

2. Provide temporary restraints for expansion joints which cannot sustain thereactions due to test pressure. If temporary restraints are not practical,isolate expansion joints from testing.

3. Flush system with clean water. Clean strainers.4. Isolate equipment that is not to be subjected to the test pressure from the

piping. If a valve is used to isolate the equipment, its closure shall becapable of sealing against the test pressure without damage to the valve.Flanged joints at which blinds are inserted to isolate equipment need not betested.

5. Install relief valve set at a pressure no more than 1/3 higher than the testpressure, to protect against damage by expansion of liquid or other source ofoverpressure during the test.

B. Testing: Test steam and condensate piping as follows:

1. Use ambient temperature water as the testing medium, except where there isa risk of damage due to freezing. Another liquid may be used if it is safe forworkmen and compatible with the piping system components.

2. Use traps installed at high points in the system to release trapped air whilefilling the system. Use drip legs installed at low points for completeremoval of the test liquid.

3. Examine system to see that equipment and parts that cannot withstand testpressures are properly isolated. Examine test equipment to ensure that it istight and that low pressure filling lines are disconnected.

4. Subject piping system to a hydrostatic test pressure that at every point in thesystem is not less than 1.5 times the design pressure. The test pressure shallnot exceed the maximum pressure for any vessel, pump, valve, or othercomponent in the system under test.

5. After the hydrostatic test pressure has been applied for at least 10 minutes,examine the system for leakage. Eliminate leaks by tightening, repairing, or


10/16/00 99

replacing components as appropriate, and repeat hydrostatic test until thereare no leaks.

3.11 CLEANING

A. Flush the system with clean water. Remove, clean, and replace strainer screens.


10/16/2000100

SECTION 15530 - REFRIGERANT PIPING


PART 1 - GENERAL



1. Basic Mechanical Requirements.2. Basic Mechanical Materials and Methods.3. Supports and Anchors.

1.2 SUMMARY

A. This Section includes refrigerant piping used for air conditioning applications. ThisSection includes:

1. Pipes, tubing, fittings, and specialties.2. Special duty valves.


1. Division 7, Section "Roof Accessories" for roof curbs, piping supports, androof penetration boots.

2. Division 7, Section "Joint Sealers" for materials and methods for sealingpipe penetrations through basement walls and fire/smoke barriers.

3. Division 15, Section "Mechanical Identification" for labeling andidentification of refrigerant piping.

4. Division 15, Section "Mechanical Insulation" for pipe insulation.

C. Products installed but not furnished under this Section include pre-charged tubing,refrigerant specialties, and refrigerant accessories furnished as an integral part of orseparately with packaged air conditioning equipment.

1.3 SUBMITTALS

A. Submit Product data, 3 copies required, for the following products:

1. Each type valve specified.2. Each type refrigerant piping specialty specified.

15530 REFRIGERANT PIPING

10/16/00 101

B. Submit Shop drawings showing layout of refrigerant piping, specialties, and fittingsincluding, but not necessarily limited to, pipe and tube sizes, valve arrangementsand locations, slopes of horizontal runs, wall and floor penetrations, and equipmentconnection details. Show interface and spatial relationship between piping andproximity to equipment.

C. Maintenance data for refrigerant valves and piping specialties, for inclusion inOperating and Maintenance Manual specified in Division 15 Section "BasicMechanical Requirements."


A. Qualify brazing processes and brazing operators in accordance with ASME "Boilerand Pressure Vessel Code," Section IX, "Welding and Brazing Qualifications."

B. Regulatory Requirements: Comply with provisions of the following codes:

1. ANSI B31.5: ASME Code for Pressure Piping - Refrigerant Piping.2. ANSI/ASHRAE Standard 15: Safety Code for Mechanical Refrigeration.3. BOCA Basic National Mechanical Code.


A. Coordinate the installation of roof piping supports and roof penetrations, withinstaller of roof to maintain warranty.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Refrigerant Valves and Specialties:a. Alco Controls Div, Emerson Electric.b. EATON Corporation, Control Div.c. Henry Valve Company.d. Sporlan Valve Company.

2.2 PIPE AND TUBING MATERIALS

A. General: Refer to Part 3, Article "PIPE APPLICATION" for identification ofsystems where the below specified pipe and fitting materials are used.


10/16/00102

B. Copper Tubing: ASTM B 280, Type ACR, hard-drawn straight lengths, and soft-annealed coils, seamless copper tubing. Tubing shall be factory cleaned, ready forinstallation, and have ends capped to protect cleanliness of pipe interiors prior toshipping.

C. Copper Tubing: ASTM B 88, Type L, hard-drawn straight lengths, and soft-annealed coils, seamless copper tubing.

2.3 FITTINGS

A. Wrought-Copper Fittings: ANSI B16.22, streamlined pattern.


A. Brazing Filler Materials: AWS A5.8, Classification BAg-1 (Silver).

2.5 VALVES

A. General: Complete valve assembly shall be UL-listed and designed to conform toARI 760.

B. Globe: 450 psig maximum operating pressure, 275 deg. F maximum operatingtemperature; cast bronze body, with cast bronze or forged brass wing cap and boltedbonnet; replaceable resilient seat disc; plated steel stem. Valve shall be capable ofbeing repacked under pressure. Valve shall be straight through or angle pattern,with solder-end connections.

C. Check Valves - Smaller Than 7/8 Inch: 500 psig maximum operating pressure, 300deg. F maximum operating temperature; cast brass body, with removable piston,Teflon seat, and stainless steel spring; straight through globe design. Valve shall bestraight through pattern, with solder-end connections.

D. Check Valves - 7/8 inch and Larger: 450 psig maximum operating pressure, 300deg. F maximum operating temperature; cast bronze body, with cast bronze orforged brass bolted bonnet; floating piston with mechanically retained Teflon seatdisc. Valve shall be straight through or angle pattern, with solder-end connections.

E. Solenoid Valves: 250 deg. F temperature rating, 400 psig working pressure; forgedbrass, with Teflon valve seat, two-way straight through pattern, and solder endconnections. Provide manual operator to open valve. Furnish complete withNEMA 1 solenoid enclosure with 1/2 inch conduit adapter, and 24 volt, 60 Hz.normally closed holding coil.

F. Evaporator Pressure Regulating Valves: pilot-operated, forged brass or cast bronze;complete with pilot operator, stainless steel bottom spring, pressure gage tappings,24 volts DC, 50/60 Hz, standard coil; and wrought-copper fittings for solder endconnections.


10/16/00 103

G. Thermal Expansion Valves: thermostatic adjustable, modulating type; size asrequired for specific evaporator requirements, and factory set for proper evaporatorsuperheat requirements. Valves shall have copper fittings for solder endconnections; complete with sensing bulb, a distributor having a side connection forhot gas bypass line, and an external equalizer line.

H. Hot Gas Bypass Valve: adjustable type, sized to provide capacity reduction beyondthe last step of compressor unloading; and wrought copper fittings for solder endconnections.

2.6 REFRIGERANT PIPING SPECIALTIES

A. General: Complete refrigerant piping specialty assembly shall be UL-listed anddesigned to conform to ARI 760.

B. Strainers: 500 psig maximum working pressure; forged brass body with monel 80-mesh screen, and screwed cleanout plug; Y-pattern, with solder end connections.

C. Moisture/liquid Indicators: 500 psig maximum operation pressure, 200 deg. Fmaximum operating temperature; forged brass body, with replaceable polishedoptical viewing window, and solder end connections.

D. Filter-driers: 500 psig maximum operation pressure; steel shell, flange ring, andspring, ductile iron cover plate with steel capscrews, and wrought copper fittings forsolder end connections. Furnish complete with replaceable filter-drier core kit,including gaskets, as follows:

1. Standard capacity desiccant sieves to provide micronic filtration.

E. Suction Line Filter-Drier: 350 psig maximum operation pressure, 225 deg. Fmaximum operating temperature; steel shell, and wrought copper fittings for solderend connections. Permanent filter element shall be molded felt core surrounded bya desiccant for removal of acids and moisture for refrigerant vapor.

F. Flanged Unions: 400 psig maximum working pressure, 330 deg. F maximumoperating temperature; two brass tailpiece adapters for solder end connections tocopper tubing; flanges for 7/8 inch through 1-5/8 inch unions shall be forged steel,and for 2-1/8 inch through 3-1/8 inch shall be ductile iron; four plated steel bolts,with silicon bronze nuts and fiber gasket. Flanges and bolts shall have factory-applied rust-resistant coating.

G. Flexible Connectors: 500 psig maximum operating pressure; seamless tin bronze orstainless steel core, high tensile bronze braid covering, solder connections, andsynthetic covering; dehydrated, pressure tested, minimum 7 inch in length.

PART 3 - EXECUTION


10/16/00104

3.1 EXAMINATION

A. Examine rough-in for refrigerant piping systems to verify actual locations of pipingconnections prior to installation.


A. Use Type L, or Type ACR drawn copper tubing with wrought copper fittings andbrazed joints above ground, within building. Use Type K, annealed temper coppertubing for 2 inch and smaller without joints, below ground and within slabs.Mechanical fittings (crimp or flare) are not permitted.

1. Install annealed temper tubing in pipe duct. Vent pipe duct to the outside.

B. If other than Type ACR tubing is used, clean and protect inside of tubing asspecified in Article "CLEANING" below.


A. General: Install refrigerant piping in accordance with ASHRAE Standard 15 - "TheSafety Code for Mechanical Refrigeration."

B. Install piping in as short and direct arrangement as possible to minimize pressuredrop.

C. Install piping for minimum number of joints using as few elbows and other fittingsas possible.

D. Arrange piping to allow normal inspection and servicing of compressor and otherequipment. Install valves and specialties in accessible locations to allow forservicing and inspection.

E. Provide adequate clearance between pipe and adjacent walls and hanger, or betweenpipes for insulation installation. Use sleeves through floors, walls, or ceilings, sizedto permit installation of full thickness insulation.

F. Insulate suction lines. Liquid lines are not required to be insulated, except wherethey are installed adjacent and clamped to suction lines, where both liquid andsuction lines shall be insulated as a unit.

1. Do not install insulation until system testing has been completed and allleaks have been eliminated.

G. Install branch tie-in lines to parallel compressors equal length, and pipe identicallyand symmetrically.

H. Install copper tubing in rigid or flexible conduit in locations where copper tubingwill be exposed to mechanical injury.


10/16/00 105

I. Slope refrigerant piping as follows:

1. Install horizontal hot gas discharge piping with 1/2" per 10 feet downwardslope away from the compressor.

2. Install horizontal suction lines with 1/2 inch per 10 feet downward slope tothe compressor, with no long traps or dead ends which may cause oil toseparate from the suction gas and return to the compressor in damagingslugs.

3. Install traps and double risers where indicated, and where required to entrainoil in vertical runs.

4. Liquid lines may be installed level.

J. Use fittings for all changes in direction and all branch connections.

K. Install exposed piping at right angles or parallel to building walls. Diagonal runsare not permitted, unless expressly indicated.

L. Install piping free of sags or bends and with ample space between piping to permitproper insulation applications.

M. Conceal all pipe installations in walls, pipe chases, utility spaces, above ceilings,below grade or floors, unless indicated to be exposed to view.

N. Install piping tight to slabs, beams, joists, columns, walls, and other permanentelements of the building. Provide space to permit insulation applications, with 1inch clearance outside the insulation. Allow sufficient space above removableceiling panels to allow for panel removal.

O. Locate groups of pipe parallel to each other, spaced to permit applying insulationand servicing of valves.

P. Exterior Wall Penetrations: Seal pipe penetrations through exterior walls usingsleeves and mechanical sleeve seals. Pipe sleeves smaller than 6 inch shall be steel;pipe sleeves 6 inch and larger shall be sheet metal.

Q. Fire Barrier Penetrations: Where pipes pass through fire rated walls, partitions,ceilings, and floors, maintain the fire rated integrity.

R. Make reductions in pipe sizes using eccentric reducer fittings installed with thelevel side down.

S. Install strainers immediately ahead of each expansion valve, solenoid valve, hot gasbypass valve, compressor suction valve, and as required to protect refrigerant pipingsystem components.

T. Install moisture/liquid indicators in liquid lines between filter/driers andthermostatic expansion valves and in liquid line to receiver.


10/16/00106

1. Install moisture/liquid indicators in lines larger than 2-1/8 inch OD, using abypass line.

U. Install unions to allow removal of solenoid valves, pressure regulating valves,expansion valves, and at connections to compressors and evaporators.

V. Install flexible connectors at the inlet and discharge connection of compressors.


A. General: Hanger, supports, and anchors are specified in Division 15 Section"SUPPORTS AND ANCHORS."

B. Install the following pipe attachments:


2. Roller hangers and spring hangers for individual horizontal runs 20 feet orlonger.

3. Pipe rollers complete supports for multiple horizontal runs, 20 feet or longersupported by a trapeze.


C. Install hangers with the minimum rod sizes and maximum spacing identified inDivision 15 section – “supports and anchors.”



A. Brazed Joints: Comply with the procedures contained in the AWS "BrazingManual."

1. WARNING: Some filler metals contain compounds which produce highlytoxic fumes when heated. Avoid breathing fumes. Provide adequateventilation.

2. CAUTION: When solenoid valves are being installed, remove the coil toprevent damage. When sight glasses are being installed, remove the glass.Remove stems, seats, and packing of valves, and accessible internal parts ofrefrigerant specialties before brazing. Do not apply heat near the bulb of theexpansion valve.

B. Fill the pipe and fittings during brazing, with an inert gas (ie., nitrogen or carbondioxide) to prevent formation of scale.

C. Heat joints using oxy-acetylene torch. Heat to proper and uniform brazingtemperature.


10/16/00 107

3.6 VALVE INSTALLATIONS

A. General: Install refrigerant valves in accordance with manufacturer's instructions.

B. Install globe valves on each side of strainers and driers, in liquid and suction lines atevaporators, and elsewhere as indicated.

C. Install a full sized, 3-valve bypass around each drier.

D. Install solenoid valves ahead of each expansion valve and hot-gas bypass valve.Install solenoid valves in horizontal lines with coil at the top.

1. Coordinate electrical requirements and connections.

E. Thermostatic expansion valves may be mounted in any position, as close as possibleto the evaporator.

1. Where refrigerant distributors are used, mount the distributor directly on theexpansion valve outlet.

2. Install the valve in such a location so that the diaphragm case is warmer thanthe bulb.

3. Secure the bulb to a clean, straight, horizontal section of the suction lineusing two bulb straps. Do not mount bulb in a trap or at the bottom of theline.

4. Where external equalizer lines are required make the connection where itwill clearly reflect the pressure existing in the suction line at the bulblocation.

F. Install pressure regulating and relieving valves as required by ASHRAE Standard15.

3.7 EQUIPMENT CONNECTIONS

A. Install piping adjacent to machine to allow servicing and maintenance.


A. Inspect, test, and perform corrective action of refrigerant piping in accordance withASME Code B31.5, Chapter VI.

B. Repair leaking joints using new materials, and retest for leaks.

3.9 CLEANING

A. Before installation of copper tubing other than Type ACR tubing, clean the tubingand fitting using following cleaning procedure:


10/16/00108

1. Remove coarse particles of dirt and dust by drawing a clean, lintless cloththrough the tubing by means of a wire or an electrician's tape.

2. Draw a clean, lintless cloth saturated with trichloroethylene through the tubeor pipe. Continue this procedure until cloth is not discolored by dirt.

3. Draw a clean, lintless cloth, saturated with compressor oil, squeezed dry,through the tube or pipe to remove remaining lint. Inspect tube or pipevisually for remaining dirt and lint.

4. Finally, draw a clean, dry, lintless cloth through the tube or pipe.


A. Verify actual evaporator applications and operating conditions, and adjustthermostatic expansion valve to obtain proper evaporator superheat requirements.

B. Clean and inspect refrigerant piping systems in accordance with requirements ofDivision-15 Basic Mechanical Materials and Methods section "Pipes and PipeFittings."

C. Adjust controls and safeties. Replace damaged or malfunctioning controls andequipment with new materials and products.

3.11 COMMISSIONING

A. Charge system using the following procedure:

1. Install core in filter dryer after leak test but before evacuation.2. Evacuate refrigerant system with vacuum pump until temperature of 35 deg

F is indicated on vacuum dehydration indicator.3. During excavation, apply heat to pockets, elbows, and low spots in piping.4. Maintain vacuum on system for minimum of 5 hours after closing valve

between vacuum pump and system.5. Break vacuum with refrigerant gas, allow pressure to build up to 2 psi.6. Complete charging of system, using new filter dryer core in charging line.

Provide full operating charge.

B. Train Owner's maintenance personnel on procedures and schedules related to start-up and shut-down, troubleshooting, servicing, and preventative maintenance ofrefrigerant piping valves and refrigerant piping specialties.

C. Review data in Operating and Maintenance Manuals.

D. Schedule training with Owner with at least 7 days advance notice.


10/16/2000 109

SECTION 15540 - HVAC PUMPS


ISO 6708 NOMINAL SIZE (DN): A NUMERICAL DESIGNATION OF SIZE THAT ISCOMMON TO ALL COMPONENTS IN A PIPING SYSTEM OTHER THANCOMPONENTS DESIGNATED BY OUTSIDE DIAMETERS OR BY THREADSIZE. DN IS A CONVENIENT ROUND NUMBER FOR REFERENCEPURPOSES AND IS ONLY LOOSELY RELATED TO MANUFACTURINGDIMENSIONS.

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following categories of HVAC pumps for hydronicsystems:

1.2 PERFORMANCE REQUIREMENTS

A. Pump Pressure Ratings: At least equal to system's maximum operating pressure atpoint where installed, but not less than specified.

1.4 SUBMITTALS

A. General: Three copies required.

B. Product data including certified performance curves and rated capacities of selectedmodels, weights (shipping, installed, and operating), furnished specialties, andaccessories. Indicate pump's operating point on curves.

C. Maintenance data for pumps to include in the operation and maintenance manualspecified in Division 1. Include startup instructions.



15540 HVAC PUMPS

10/16/00110


2. Hydraulic Institute's "Standards for Centrifugal, Rotary & ReciprocatingPumps" for pump design, manufacture, testing, and installation.

3. UL 778 "Standard for Motor Operated Water Pumps" for constructionrequirements. Include UL listing and labeling.

4. NEMA MG 1 "Standard for Motors and Generators" for electric motors.Include NEMA listing and labeling.


PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Bell & Gossett Co.

2.2 PUMPS, GENERAL

A. General: Factory assembled and tested.

B. Base-Mounted Pumps: Include pump casings that allow removal and replacementof impellers without disconnecting piping.

C. Types, Sizes, Capacities, and Characteristics: As indicated.

D. Motors: NEMA MG 1, general purpose, continuous duty, Design B, exceptDesign C where required for high starting torque. Furnish single-, multiple-, orvariable-speed motors, with type of enclosures and electrical characteristicsindicated. Include built-in thermal-overload protection and grease-lubricated ballbearings. Select each motor to be nonoverloading over full range of pumpperformance curve. Provide class H insulation where variable speed duty specified.

E. High Energy Efficient Motors: Minimum efficiency as indicated according toIEEE 112, Test Method B. Include motors with higher efficiency than "averagestandard industry motors" according to IEEE 112, Test Method B, if efficiency isnot indicated.

F. Factory Finish: Manufacturer's standard paint applied to factory-assembled and -tested units before shipping.

G. Manufacturer's Preparation for Shipping: Clean flanges and exposed machinedmetal surfaces and treat with anti-corrosion compound after assembly and testing.Protect flanges, pipe openings, and nozzles with wooden flange covers or withscrewed-in plugs.

15540 HVAC PUMPS

10/16/00 111

2.3 SEPARATELY COUPLED, END-SUCTION PUMPS

A. Description: Base-mounted, centrifugal, separately coupled, end-suction, single-stage, bronze-fitted, radially split case design; rated for 175-psig minimum workingpressure and a continuous water temperature of 225 deg F. Include back-pull-outdesign, except where other design is indicated, and the following:

1. Casing: Cast iron, with flanged piping connections, drain plug in bottom ofvolute, and threaded gage tappings at inlet and outlet flange connections.Include integral feet or other means on volute to support weight of casingand attached piping.

2. Impeller: ASTM B 584, cast bronze, statically and dynamically balanced,closed, overhung, single suction, keyed to shaft, and secured by locking capscrew.

3. Wearing Rings: Replaceable, bronze casing ring.4. Shaft and Sleeve: Steel shaft with bronze sleeve.5. Seals: Mechanical type. Include carbon-steel rotating ring, stainless-steel

spring, ceramic seat, and flexible bellows and gasket.6. Coupling: Flexible-spacer type, capable of absorbing torsional vibration

and shaft misalignment. Include flange and sleeve section that can bedisassembled and removed without removing pump or motor.

7. Coupling Guard: Steel, removable, and attached to mounting frame.8. Mounting Frame: Welded-steel frame and cross members, factory-

fabricated from ASTM A 36 (ASTM A 36M) channels and angles.Fabricate for mounting pump casing, coupling guard, and motor. Grindwelds smooth before application of factory finish. Field-drill motor-mounting holes for field-installed motors.

9. Motor: Secured to mounting frame, with adjustable alignment.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Install pumps according to manufacturer’s written installation and alignmentinstructions.

B. Install pumps to provide access for periodic maintenance, including removal ofmotors, impellers, couplings, and accessories.

C. Support pumps and piping separately so that piping is not supported by pumps.

D. Set base-mounted pumps on concrete foundations. Disconnect coupling halvesbefore setting. Do not reconnect couplings until alignment operations have beencompleted. Fill frame with grout.

15540 HVAC PUMPS

10/16/00112

E. Provide grease lubrication fitting extensions on pumps associated with chilled waterservice.

3.2 ALIGNMENT

A. Provide manufacturers representative to align pump and motor shafts and pipingconnections after setting them on foundations, after grout has been set andfoundation bolts have been tightened, and after piping connections have been made.

B. Comply with pump and coupling manufacturers' written instructions.

C. Alignment tolerances: According to manufacturer’s recommendations.

3.3 CONNECTIONS

A. General: Install shutoff valve and strainer on pump suction and check valve, andshutoff valve on pump discharge, except where other arrangement may be needed.

B. Install valves that are the same size as piping connecting to pumps.

C. Install suction and discharge pipe sizes equal to or greater than the diameter ofpump nozzles.

D. Install flexible connectors on suction and discharge sides of base-mounted pumpsand where indicated. Install between pump casing and valves, except where otherarrangement is indicated.

E. Install thermometers where indicated.

F. Install pressure gages on pump suction and discharge. Provide shutoff valve insuction and discharge sensing line.

G. Install electrical connections for power, controls, and devices.

3.4 COMMISSIONING

A. Final Checks Before Startup:

1. Lubricate bearings.2. Check motor for proper rotation that matches direction marked on pump

casing.3. Check that pumps are free to rotate by hand. Pumps for handling hot liquids

shall be free to rotate with pump hot and cold. Do not operate pump if it isbound or even drags slightly until cause of trouble is determined andcorrected.

15540 HVAC PUMPS

10/16/00 113

B. Refer to Division 15 Section "Testing, Adjusting, and Balancing" for detailedrequirements for testing, adjusting, and balancing hydronic systems.


10/16/2000114

SECTION 15545 - CHEMICAL WATER TREATMENT

PART 1 - GENERAL

1.2 SUMMARY

A. University retains services of chemical treatment representative for setup, analysis,furnishing of chemicals and consultation.

B. This Section includes water-treatment systems for the following:

1. Hot-water heating systems.2. Chilled-water systems.3. Condenser water systems.

1.3 SYSTEM DESCRIPTION

A. Closed System: One bypass feeder on each system, with isolating and drain valvesinstalled around balancing valve downstream of circulating pumps, or across pumpsuction and discharge.

1. Introduce closed system treatment through bypass feeder when required orindicated by test.

2. Performance: Water treatment sized and equipped to treat raw wateravailable at Project site to sustain the following water characteristics:a. Hardness: 0.00.b. Iron: 0.00.c. Total Dissolved Solids (TDS): 1500 to 1750 ppm (as CaCO3).d. Silica: 60 ppm or less.e. pH: 8.0 or above.

B.. Condenser Water Treatment: Electronic Automatic system for inhibitor, blowdownand biocide, activated by water meter on system makeup and conductivitycontroller in condenser water line. Softened water is blended with raw water toreduce chemical treatment quantities.

1. Sequestering agent and corrosion inhibitor pumped from solution barrel intocondenser water supply to tower.

2. Meter feed biocide with blowdown locked out to ensure biocide retentiontime.

3. Conductivity controller samples condenser water and operates solenoidbleed valve when condenser water pump is operating.

4. Biocide introduced to tower by continuous feed with solution pump5. Performance: Water treatment sized and equipped to treat raw water

available at Project site to sustain the following water characteristics:a. Hardness: 0.00.

15545 CHEMICAL WATER TREATMENT

10/16/00 115

b. Iron: 0.00.c. Total Alkalinity: 600 ppm or less.d. Total Algae: 103 or less growth.e. pH: 9.1 or less.

1.4 SUBMITTALS

A. General: Product Data : 6 copies required

Shop Drawings: 6 copies required

B. Product data for each type of product specified. Include manufacturer's technicalproduct data, rated capacities of selected equipment clearly indicated, water-pressure drops, weights (shipping, installed, and operating), furnished specialties,accessories, and installation and startup instructions.

C. Shop drawings from manufacturer detailing equipment assemblies and indicatingdimensions, weights, loadings, required clearances, method of field assembly,components, and location and size of each field connection.

D. Wiring diagrams detailing power and control wiring and differentiating clearlybetween manufacturer-installed wiring and field-installed wiring.

E. Field test reports indicating and interpreting test results relative to compliance withspecified requirements.

F. Maintenance data for chemical water treatment to include in the operation andmaintenance manual. Include detailed manufacturer's instructions and parts list foreach item of equipment, control, and accessory. Include troubleshootingmaintenance guide.


A. Chemical Standards: Meet state and local pollution-control regulations.

B. Comply with NFPA 70 for components and installation.

1.6 MAINTENANCE

A. Service Period: Provide chemicals and service program for period of one year fromstartup date of equipment, including the following:

1. Initial water analysis and recommendations.2. Startup assistance.3. Training of operating personnel.4. Periodic field service and consultation.5. Customer report charts and log sheets.


10/16/00116

6. Laboratory technical assistance. Ensure that system is operational, filled,started, and vented prior to cleaning. Place terminal control valves in OPENposition during cleaning. Use water meter to record capacity in eachsystem.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide productsfurnished by chemial tretment representative under contract to the university.

2.2 CHEMICAL WATER TREATMENT SYSTEM

A. Bypass (Pot) Feeders: Cast iron or steel, for introducing chemicals into system;with funnel, shutoff valve on top, air release valve on top, drain valve on bottom,and recirculating shutoff valves on sides. Ball style valves.

1. Capacity: to suit project requirements 2. Working Pressure: 125 psi.

B. Positive Displacement Diaphragm Pump: Adjustable flow rate; thermoplasticconstruction; continuous-duty, fully enclosed electric motor and drive; and built-inrelief valve.

C. Packaged Conductivity Controller: Solid-state circuiting, 5 percent accuracy, lineardial adjustment, built-in calibration switch, ON-OFF switch and light, controlfunction light, output to control circuit, and recorder.

D. Cold-Water Meter: Positive displacement type with sealed, tamperproof magneticdrive; impulse contact register; single-pole, double-throw, dry-contact switch.

E. Motorized Ball Valve – Pneumatic or electrically operated.

F. Electronic Timers: Infinitely adjustable over full range, 150-second and 5-minuterange, mounted together in cabinet with HAND-OFF-AUTOMATIC switches andstatus lights.

G. Condenser Water Treatment Control Panel: Incorporate solid-state integratedcircuits and digital LED displays, in NEMA 250, Type 12 steel enclosure. Providegasketed and lockable door.

1. Control dissolved solids on conductivity and include the following:a. LED digital readout display (microhm/cm).b. Temperature-compensated sensor probe adaptable to sample stream

manifold.


10/16/00 117

c. HIGH, LOW, and NORMAL conductance indicator lights (LED).d. HIGH or LOW conductance alarm light, trip points field adjustable;

with SILENCE switch.e. HAND-OFF-AUTOMATIC switch for solenoid bleed valve.f. BLEED light to indicate valve operation.g. Adjustable hysteresis or dead-band (internal).

2. Control inhibitor feed on makeup volume and include the following:a. Solid-state reset counter (1 to 15, selectable).b. Solid-state timer (adjustable 1/4 to 5 minutes).c. Test switch.d. HAND-OFF-AUTOMATIC switch for chemical pump.e. Illuminated legend shall indicate FEED when pump is activated.f. Solid-state lockout timer (adjustable 1/4 to 3 hours) and indicator light.

Lockout timer shall deactivate the pump and activate alarm circuits.g. Panel totalizer (amount of makeup), electromechanical type.

3. Biocide programmer to include the following:a. 24-hour timer with 14-day skip feature to permit activation any hour of

the day.b. Precision, solid-state, bleed-lockout timer (0 to 9 hours) and biocide

pump timer (0 to 2.5 hours), clock controlled.c. Solid-state alternator to enable the use of 2 different formulations.d. Digital display of time of day (24 hours).e. LED display of day of week (14 days).f. Fast and slow clock set controls (internal).g. Battery back-up so clock is not disturbed by power outages; quartz

timekeeping accuracy.h. HAND-OFF-AUTOMATIC switches for biocide pumps.i. BIOCIDE A and BIOCIDE B illuminated legends indicate pump

running.

2.3 CHEMICAL TREATMENT TEST EQUIPMENT

A. Test Cabinet: White-enamel cabinet with local fluorescent light, capable of Accommodating 4- to 10-mL, zeroing, titrating burettes and associated reagents.

B. Kits: As recommended by water treatment system manufacturer for determining water charateristics, including carrying case and spare reageants. Provide the following test kits:

1. Total hardness titration.2. Conductivity bridge, range 0 to 10,000 microhms.3. Creosol red pH slide complete with reagent.4. Inhibitor.

2.4 CHEMICALS


10/16/00118

A. Furnish chemicals recommended by water treatment system manufacturer fortreating water to meet specified water quality. Provide only chemicals that arecompatible with piping materials, seals, and accessories.

B. System Cleaner: Liquid alkaline compound with emulsifying agents and detergentsto remove grease and petroleum products.

C. Biocide: Alternating microbiocides.

D. Closed System (Water) Chemicals: Sequestering agent to reduce deposits andadjust pH, corrosion inhibitors, and conductivity enhancers.

E. Condenser Water (Cooling Tower) System Chemicals: Sequestering agent toinhibit scaling, acid to reduce alkalinity and pH, corrosion inhibitor, and biocide.

2.5 CONDENSER WATER FILTRATION SYSTEM

A. Description: Sidestream centrifical action filtration unit to remove suspended solidsfrom condenser water system, including filter, and pneumatically operated blowdown valve.

B. Size system to constantly filter approximately one percent of condenser watersystem's total circulation volume.

.

PART 3 - EXECUTION


A. Testing Agency: A chemical treatment consultant employed by Owner willperform field quality-control testing.

3.2 CLEANING

A. Add cleaning chemicals as needed; recommend flushing durations and number ofcycles to contractor.

B. Provide consultation to contractor during, filling starting and flushing. Check waterquality and advise during each cleaning cycle as to when acceptable water quality achieved.

3.3 COMMISSIONING

A. Startup Services: Provide the services of a factory-authorized service representativeto provide startup service and to demonstrate and train Owner's maintenancepersonnel as specified below.


10/16/00 119

3.7 DEMONSTRATION

A. Train Owner's maintenance personnel on procedures and schedules related tostartup and shutdown, troubleshooting, servicing, and preventive maintenance.

B. Schedule training with Owner.


124

SECTION 15582 - STEAM CONDENSATE RETURN UNITS


ISO 6708 NOMINAL SIZE (DN): A NUMERICAL DESIGNATION OF SIZE THAT ISCOMMON TO ALL COMPONENTS IN A PIPING SYSTEM OTHER THANCOMPONENTS DESIGNATED BY OUTSIDE DIAMETERS OR BY THREADSIZE. DN IS A CONVENIENT ROUND NUMBER FOR REFERENCEPURPOSES AND IS ONLY LOOSELY RELATED TO MANUFACTURINGDIMENSIONS.

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes steam condensate return units for low pressure steamsystems. It is the University’s preference to utilize steam pressure poweredcondensate return units whenever possible. If space and/or elevations precludetheir usage, duplex, pump driven units are acceptable.


1. Division 15 Section "Meters and Gages" for thermometers and pressuregages, connector plugs, and devices.

2. Division 15 Section "Steam and Condensate Piping."3. Division 16 Sections for power, wiring, and devices, except where specified

with units.

1.2 SUBMITTALS

A. Product data, three copies required, including certified performance curves andrated capacities of selected models, weights (shipping, installed, and operating),furnished specialties, and accessories. Indicate pump's operating point on curves.Include receiver capacity and material.

B. Shop drawings, three copies required, showing pump layout and connections.Include setting drawings with templates, directions for installation of foundationand anchor bolts, and other anchorages.

C. Wiring diagrams detailing wiring for power, signal, and control systems anddifferentiating between manufacturer-installed wiring and field-installed wiring.

15582 STEAM CONDENSATE RETURN UNITS

10/16/00 125

D. Maintenance data for steam condensate return units to include in the operation andmaintenance manuals. Include startup instructions and recommended maintenancerequirements with applicable schedules.




2. Hydraulic Institute's "Standards for Centrifugal, Rotary & ReciprocatingPumps" for pump design, manufacture, testing, and installation.


B. Listing and Labeling: Provide electrically operated units specified in this Sectionthat are listed and labeled.

1. The Terms "Listed" and "Labeled": As defined in the National ElectricalCode, Article 100.


C. Single-Source Responsibility: Obtain each category of steam condensate returnunits from 1 source and by a single manufacturer.


A. Store steam condensate return units in dry location.

B. Retain shipping flange protective covers and protective coatings during storage.

C. Protect bearings and couplings against damage from sand, grit, and other foreignmatter.

D. Comply with unit manufacturer's rigging instructions.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Floor-Mounting, Centrifugal Pump, Steam Condensate Return Units:a. Dunham-Bush, Inc.


10/16/00126

b. ITT Fluid Technology Corp.; Domestic Pump Div.c. Shippensburg Pump Co., Inc.d. Skidmore.

2. Pressure-Powered, Steam Condensate Return Units:a. Armstrong International, Inc.: Series PTb. Domestic : Series PCC

2.2 ELECTRIC, STEAM CONDENSATE RETURN UNITS

A. Description: Factory-fabricated, packaged, electric-drive pump units of capacityindicated. Include receiver, pumps, float switches, controls, and accessoriessuitable for operation with low-pressure steam condensate.

B. Configuration: Floor-mounting, duplex unit with receiver, 2 centrifugal waterpumps, and 2 float switches.

1. Receiver: Close-grained cast iron, floor mounting. Include externallyadjustable float switches, water-level gage, condensate thermometer, pumpdischarge pressure gages, bronze isolation valves between receiver andpumps, flanges for pump mounting, and 2 lifting eyebolts.

2. Inlet Strainer: Cast iron with self-cleaning bronze screen, dirt pocket, andclean-out plug on receiver inlet.

3. Water Pumps: Centrifugal, close coupled, vertical design, permanentlyaligned, bronze fitted. Include enclosed bronze case rings, stainless-steelshafts, mechanical seals, and drip-proof motors. If mounted on receiverflanges, provide isolation valve between receiver and pump.

4. Control Panel: NEMA 250, Type 2 control cabinet with hinged door andgrounding lug, mounted on unit. Factory wired for single external electricalconnection. The following are included within cabinet:a. Motor controller for each pump.b. Electrical alternator.c. Momentary contact "TEST" push button, for each pump, on cover.d. Numbered terminal strip.e. Disconnect switch.f. Fused transformer for each control circuit.

5. Control Circuits: Independent for each pump. Electric alternator operatespumps in sequence and allows both pumps to operate on receiver high level.

6. Manual Lead-Lag Control: Overrides electric alternator when active pumpis manually selected and allows both pumps to operate on receiver highlevel.

2.3 PRESSURED-POWERED, STEAM CONDENSATE RETURN UNITS

A. Description: Factory-fabricated, pressure-powered pump units of capacityindicated. Include receiver tank duplex pimping traps, gauge glass, include


10/16/00 127

controls, valves, piping connections, and accessories suitable for operation withlow-pressure steam.

B. Configuration: Floor mounted packaged duplex unit with receiver, two traps, twofloat switches.

1. Piping Connections: Threaded, for condensate, operating fluid, vent, andaccessories. Include inlet strainer with cast iron body, bronze screen, dirtpocket and clean out on receiver inlet.

2. Valves: Manufacturer's standard shutoff and check valves on inlet andoutlet.

3. Receiver: ASME coded Cast iron or welded steel, mounted on fabricated-steel supports. Include armored water-level gage and threaded pipingconnections; vented to handle condensate load.

4. Pipe: ASTM A 53, Type S or ASTM A 106; Schedule 80; seamless steel.5. Fittings: ASME B16.1, Class 125 cast iron, threaded.6. Traps: steel or cast iron body construction. Internals shall be all stainless

steel float operated mechanisms with externally replaceable seats; noexternal seals or packing. Unit shall be non-cavitating design operating upto 125 ps lg steam and capable of handling condensate at 350 degrees F.Factory test prior to shipment.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas, equipment foundations, and conditions, with Installer present, forcompliance with requirements for installation and other conditions affectingperformance of steam condensate return units.

B. Examine roughing-in of piping systems to verify actual locations of piping andelectrical connections before unit installation.

C. Do not proceed until unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install steam condensate return units according to manufacturer's writteninstructions.

B. Install units in locations indicated and arranged to provide access for periodicmaintenance, including removal of motors, couplings, and accessories.

C. Install units on concrete bases as indicated. Anchor units to bases using inserts oranchor bolts.

D. Install thermometers and pressure gages if indicated.


10/16/00128

E. Install electrical devices furnished by manufacturer but not specified to be factorymounted.

3.3 CONNECTIONS

A. Install valves as indicated.

B. System Return Connection: Inlet strainer and valved bypass to drain.

C. Pump Discharge Connections: Check valve, shutoff valve, and throttling valve foreach pump unit.

D. Overflow and Drain Piping Connections: Pipe drain to nearest floor drain or asindicated.

E. Vent Piping: Full size, terminating in 180-degree elbow at point above higheststeam system connection, or as indicated.

F. Electrical power and control wiring and connections are specified in Division 16Sections.

3.4 COMMISSIONING

A. Clean strainers.

B. Set steam condensate return unit controls.

C. Set pump controls for automatic start, stop, and alarm operation as required forsystem application.

D. Perform preventive maintenance operations and checks on steam condensate returnunits before starting.

1. Lubricate bearings.2. Check that controls are correct for required application.3. Set float switches to operate at proper levels.4. Set throttling valves on pump discharge for specified flow.5. Check motors for proper rotation.6. Test controls and demonstrate compliance with requirements.7. Replace damaged or malfunctioning controls and equipment.

E. Start steam condensate return units according to manufacturer's startup instructions.


129

SECTION 15681 - WATER/STEAM ABSORPTION CHILLERS

PART 1 - GENERAL


A. Related Sections:

1. Refer to other sections of Division 15 for piping, specialties, pumps, valves,field installed automatic temperature controls, vibration isolation, and fieldapplied insulation.

2. This section includes chiller package, refrigerant charge, controls andcontrol connections, chilled water connections, condenser waterconnections, steam and condensate connections and starters.

1.2 SUMMARY

A. This Section includes packaged, factory-assembled, steam absorption liquidchillers.

B. If the University furnishes the chillers, this Section specifies the installationrequirements.

1.3 REFERENCES

A. ARI 560 - Latest Version - Absorption water chilling packages.

B. ASME - Pressure Vessels

C. ASTM A3C - Structural Steel Members

D. NEMA 250 - Enclosures for Electrical Equipment (1000 volts max.)

E. NEMA 1 - Motors and Generators

F. 46465 - Control Cooling Air Conditioners

1.4 SUBMITTALS

A. Product Data: Submit, three copies required, product data, including ratedcapacities, weights (shipping, installed, and operating), furnished specialties andaccessories; and installation and start-up instructions.

B. Shop Drawings: Submit, three copies required, manufacturer's assembly type shopdrawings indicating dimensions, weight loadings, required clearances, methods ofassembly of components, and location and size of each field connection.

15681 WATER/STEAM ABSORPTION CHILLERS

10/16/00130

C. Wiring Diagrams: Submit, three copies required, manufacturer's electricalrequirements for power supply wiring to units. Submit manufacturer's ladder typewiring diagrams for interlock and control wiring. Clearly differentiate betweenportions of wiring that are factory-installed and portions to be field-installed.

D. Maintenance Data: Submit maintenance and operating data.

E. Quality Control Submittals:

1. Submit certification of compliance with ASME, UL, and ASHRAEfabrication requirements specified in Quality Assurance below.

2. Submit certification of compliance with performance verificationrequirements specified in PART 2 of this Section.

3. Submit quality control reports specified in PART 3 of this Section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture ofabsorption chillers, of types and capacities required, whose products have been insatisfactory use in similar service for not less than 5 years; include list of ownerswith addresses.

B. Regulatory Requirements:

1. ASHRAE Compliance: Construct and install absorption chillers inaccordance with ASHRAE 15 "Safety Code for Mechanical Refrigeration".

2. UL Compliance: Provide absorption chillers which are constructed inaccordance with UL 465 "Central Cooling Air Conditioners".


A. Deliver chillers as a complete factory assembled unit with protective crating andcovering.

B. Coordinate the delivery of the chiller(s) in sufficient time to allow movement intothe building.


A. Coordinate the size and location of concrete equipment pads. Cast anchor boltinserts into pad.

1.8 WARRANTY


10/16/00 131

A. Furnish a written guarantee to include labor, material and parts to remedy anydefects due to faulty materials or workmanship which appear in the work within onecomplete cooling session, but not less than 12 months, or eighteen months fromtime of job site delivery.


A. The University may at its option enter into extended maintenance service contractupon expiration of warranty.

PART 2 - PRODUCTS

DELETE BELOW, FOR NONPROPRIETARY SPECIFICATION.

2.1 MANUFACTURERS

A. Available Manufacturers: Subject to compliance with requirements, provide water-cooled absorption chillers of one of the following:

1. York, Co.2. Trane, Co., The

2.2 UNIT DESCRIPTION

A. Description: Factory assembled and tested, packaged, water cooled, liquid chillers,consisting of absorber-evaporator assembly, solution heat exchanger, solution andrefrigerant pumps, interconnecting piping, refrigeration accessories, instrument andcontrol panel including gages and indicating lights, auxiliary components andaccessories, motor starters, and construction providing complete operational unit.

B. Materials: All materials shall be of American Manufacture wherever possible.Structural steel members shall conform as a minimum to ASTM Specification A-36(latest revision) or equivalent and be handled and stored in such a manner as toprevent deformation, defacement or corrosion, unless more stringent requirementsare stated in the Specifications or normally required. The Vendor shall clearly statematerials of construction of tube materials.

C. Welding: All welding shall be in accordance with ASME, Section VIII, code forUnfired Pressure Vessel Construction by personnel meeting the requirements ofASME.

D. Surface Preparation and Painting: Vendor shall include the cost for surfacepreparation and painting; include allowance for field painting by installing


10/16/00132

contractor if needed. Vendor's proposal must clearly define the surface preparation,method of application and paint materials which are to be used in both factory andfield painting.

E. Standards:

1. All equipment must conform with the following applicable standards andcodes (latest revision).

(a) American National Standard Institute (ANSI)

(b) American Society of Mechanical Engineers (ASME)

(c) American Society for Testing & Materials (ASTM)

(d) American Welding Society (AWS)

(e) National Electrical Manufacturers Association (NEMA)

(f) National Electric Code (NEC)

(g) National Board of Fire Underwriters (NBFU)

(h) National Electric Code (NEC)

(i) National Fire Protection Association (NFPA)

(j) Steel Structures Painting Council (SSPC)

(k) Underwriters Laboratories Inc. (UL)

F. Patents: The Vendor shall warrant and guarantee that the operating process andgoods delivered will not infringe any valid patent, industrial design, copyright ortrademark, foreign or domestic, owned or controlled by any other corporation, firmor person. The Vendor will indemnify and hold harmless the OWNER orENGINEER against any and all liabilities, losses, damages, claims and expenses byreason of any claim, action or litigation out of the use or sale by the OWNER anygoods supplied by the Vendor under the Order.

2.3 BASIC COMPONENTS

A. PUMPS:

1. Self-contained hermetically sealed centrifugal solution and refrigerant pumps(separate or on common shaft), lubricated and cooled by pumped “distilledrefrigerant water”fluid.

B. HEAT EXCHANGERS:

1. Construction: Shell and tube type, seamless or welded steel in one or twoshells with cast iron or welded steel heads.


10/16/00 133

2. Absorber and Evaporator Tubes: 0.022” minimum wall thickness Cupro-nickel OR 0.028”minimum wall thickness copper.

3. Concentrator/Generator Tubes: 0.028” minimum wall thickness Cupro-nickelOR 0.028” minimum wall thickness copper.

4. Condenser Tubes: 0.028”minimum wall thickness copper.

5. Connections: Stub-out pipe flanged connections, for water and steam services.

6. Concentrator: Design for 50 psi minimum working steam pressure. Test at1.5 times maximum working pressure. Working pressure = 13psig.

C. PURGE SYSTEM:

1. Manually purge unit of non-condensables.

D. AUTOMATICE DECRYSTALLIZATION:

1. Automatic cycle by diluting lithium bromide solution to prevent crystallizationwhile machine is running.

2.4 CONTROLS

A. Electric Control Panels: NEMA 250, Type 1; factory wired and mounted panelwith key locked door that includes:

1. Terminal block.

2. Non-fused disconnect.

3. Control transformer and separately fused control circuit.

4. Motor temperature cutout and high/low temperate cutout.

5. Time delay relay for dilution cycle.

6. Motor starters.

7. Purge motor fuse.

8. External lights to indicate operation of unit, pumps and purge system.

9. Elapsed Time Indicator.

B. Microprocessor Control Panel:

1. Chilled water temperature controller.

2. Steam valve controller.


10/16/00134

3. Start-up demand limiter.

4. Flow verification control for chilled and cooling water systems.

5. Impending crystallization prevention control.

6. Start/stop capability.

C. Communication Device:

1. Vendor controls to communicate with Barber Colman Network 8000. Chillersmust have capability of being monitored, alarmed and operated throughBarber Colman System.

2. Communication devices or methods shall be suitable for up to four chillerunits.

3. The communication device will also have the capability to:

a. Sequence the chiller.

b. Control the chilled water pumps.

c. Control the condenser water pumps.

4. All communication and alarm signals are to be routed through the vendorsupplied panel or panels providing a one point interface with the BarberColeman Network 8000. Specific points shall be required but not limited tothe following:

a. Cycling shut-down (status)

b. Unit operation on/off contact

c. Remote mode ready to start (status)

d. Safety shut-down

e. Remote start/stop (contact)

f. Warning Contacts (to be listed in Bid Proposal)

g. Pump status

h. Chilled water temperatures entering

i. Chilled water temperatures leaving

j. Steam valve position

k. Condensate temperature


10/16/00 135

l. Low refrigerant temperature alarm

m. Low entering condenser water temperature

n. Remote chilled water temperature (adjustable) setpoint

D. Steam Control Valve: Normally closed electronic with demand limiter to slow rate atwhich valve opens to minimum of five minute cycles.

E. Solution Throttling Device: To increase part load economy and assure operation to 10percent specified full load capacity, at 55 degrees F minimum entering condenser watertemperature.

F. Chilled Water and Cooling Water Flow Switch: Manufacturer shall provide remote flowswitches for each chilled water system and cooling water system (normally open).

2.5 PERFORMANCE:

A. CHILLER CAPACITY AND DATA ARE SHOWN ON DRAWINS OR END OFTHIS SECTION.

B. Pressure drops for evaporator and condenser shall not exceed values specified.Internally enhanced tubes are not acceptable.

C. Concentrator/Generator:

1. Saturated Steam Inlet Pressure to Vessel: 13 psig.

2. Minimum Steam Pressure Drop Across the Steam Control Valve: 2 psig, not toexceed 20 psig valve pressure inlet.

D. Condenser/Absorber: Even number of passes is desirable.

E. Evaporator: Even number of passes is desirable for all chillers.

F. Corrosion Inhibitor:

1. Lithium nitrate inhibitor or alternative inhibitor. (Chromate Inhibitors are notacceptable).

2. MSDS sheet shall be supplied.

2.6 ELECTRICAL CHARACTERISTICS AND COMPONENTS:

A. Electrical Characteristics:

1. 480 volts, three phase, 60 Hz.

2. Provide unit mounted electric panel with circuit breakers and overcurrent protection.

B. Disconnect Switch: Factory mount disconnect switch in control panel.


10/16/00136

2.7 ACCESSORIES

A. Pad Isolators: Commercial vibration isolation material.

2.8 INSULATION

A. Field Insulation by Others. Identify All Cold Surfaces to be Insulated.

2.9 SOURCE QUALITY CONTROL

A. Test and Inspect: centrifugal chillers in accordance with ASME Boiler and PressureVessel Code, Section VIII

B. Performance Verification:

3. Rate chillers in accordance with ARI 560, Latest Version.

PART 3 – EXECUTION

3.1 INSTALLATION

A. Install chillers in accordance with manufacturers installation instructions.

B. Install chillers plumb and level, and maintain manufacturer’s recommended clearancesfor servicing and maintenance.

C. Install vibration isolators in accordance with manufacturer’s recommendations.

3.2 PIPING CONNECTIONS

A. Piping installation requirements are specified in other sections of Division 15. TheDrawings indicate the general arrangement of piping, fittings, and specialties. Thefollowing are specific connection requirements:

1. Install pipingn adjacent to machine to allow servicing and maintenance; arrangepiping to allow removal of tube bundles.

2. Install piping in accordance with manufacurer’s instructions.

3.3 MANUFACTURER’S FIELD SERVICES:

A. Provide services of factory trained representative for each unit supplied to conduct leaktest, refrigerant vacuum pressure test, evacuate, charge, start-up, calibrate controls, andfield instruct OWNER on operation and maintenance.

B. Provide services of factory trained representative for minimum one day eight (8) hoursession for classroom training OWNER on operation and maintenance. This trainingshall be provided at the site to instruct the OWNER’s operating personnel in a classroom environment. This classroom training will follow actual chiller start-up withintwo(2) weeks of unit operation.


10/16/00 137

3.4 ADJUSTING

A. Supply initial charge of lithium bromide solution and provide crystals and dilutionwater. Adjust concentration to recommended levels.

B. Coordinate unit control panel interface with the existing Barber Coleman Network 8000building system. List warning alarm contacts available.

***END OF SECTION***

138

SECTION 15686 - CENTRIFUGAL CHILLERS - AIRCOOLED

PART 1 - GENERAL


A. Drawings and general provisions of Contract, including General and SupplementaryConditions and Division-1 Specification sections, apply to work of this section.

B. Related Sections:

1. Refer to other sections of Division 15 for piping, specialties, pumps, valves,field installed automatic temperature controls, vibration isolation, and fieldapplied insulation.

2. Refer to Division 3 for concrete specifications for equipment pads.3. Refer to Division 7 for roof curbs and equipment supports, and roof

penetrations and flashing.

1.2 SUMMARY

A. This Section specifies packaged, air cooled, hermetic centrifugal water chillers.

B. This Section specifies the installation requirements for the Owner furnishedcentrifugal water chillers. Refer to Division 1 for requirements for Owner furnishedequipment.

1.3 SUBMITTALS

A. Product Data: Submit product data, including rated capacities, weights (shipping,installed, and operating), furnished specialties and accessories; and installation andstart-up instructions.

B. Shop Drawings: Submit manufacturer's assembly type shop drawings indicatingdimensions, weight loadings, required clearances, methods of assembly ofcomponents, and location and size of each field connection.

C. Wiring Diagrams: Submit manufacturer's electrical requirements for power supplywiring to units. Submit manufacturer's ladder type wiring diagrams for interlockand control wiring. Clearly differentiate between portions of wiring that arefactory-installed and portions to be field-installed.

D. Maintenance Data: Submit maintenance and operating data. Include this data inmaintenance manual in accordance with requirements of Division 1 and Section15010.

15686 CENTRIFUGAL CHILLERS - AIR COOLED

10/16/00 139

E. Quality Control Submittals:

1. Submit certification of compliance with ASME, UL, AND ASHRAEfabrication requirements specified in Quality Assurance below.

2. Submit certification of compliance with performance verificationrequirements specified in PART 2 of this Section.

3. Submit quality control reports specified in PART 3 of this Section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture ofcentrifugal chillers, of types and capacities required, whose products have been insatisfactory use in similar service for not less than 5 years.

B. Machine Experience: At time of submission of bid or proposal, chiller modelproposed must have acquired minimum of 2 years experience on each of 10 fieldinstallations, each machine having acquired minimum of 2,400 operating hours.

C. Regulatory Requirements:

1. ASHRAE Compliance: Fabricate and install centrifugal chillers to complywith ASHRAE 15 "Safety Code for Mechanical Refrigeration".

2. UL Compliance: fabricate centrifugal chillers to comply with UL 465"Central Cooling Air Conditioners".

3. ASME Compliance: fabricate and stamp centrifugal chillers to comply withASME Boiler and Pressure Vessel Code, Section VIII, Division 1.


A. Deliver chillers as a complete factory assembled unit with protective crating andcovering.

B. Ship chillers in a deep vacuum in one of two pieces, depending upon size.


A. Coordinate the size and location of concrete equipment pads for on- gradeinstallations. Cast anchor bolt inserts into pad.

B. Coordinate the installation of roof curbs and equipment supports, and roofpenetrations.

C. Concrete, reinforcement, and formwork requirements are specified in Division 3.

D. Roof specialties are specified in Division 7.


10/16/00140

1.7 WARRANTY


PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Available Manufacturer: Subject to compliance with requirements, providecentrifugal chillers from one of the following:

1. Trane Co., The

2.2 UNIT DESCRIPTION

A. Packaged, factory-assembled, piped, wired, and charged hermetic type centrifugalchillers consisting of centrifugal compressor, compressor motor, motor starter,evaporator, air cooled condenser, weather-tight equipment enclosure, controls, andpanels including gages and indicating lights, auxiliary components, and accessories.

B. Provide auxiliary condensers of capacity scheduled for heat- recovery units.

2.3 COMPONENTS

A. Compressor:

1. Shaft and Impeller Assembly: carbon or forged steel shaft with cast highstrength aluminum alloy impellers, designed and assembled for no criticalspeeds within operating range; and statically and dynamically balanced.

2. Casing: fine grain cast iron with gasket sealed casing joints.3. Drive Assembly: gear transmission integral with compressor and lubricated

through compressor lubrication system.a. Gear Assembly: gears and journal bearings babbitt lined and pressure

lubricated; provide inspection openings, to facilitate bearing inspectionand replacement without disassembly or removal of compressor casingor impeller.

4. Lubrication System: forced circulation type, with positive displacementsubmerged pump and replaceable oil filter; complete with an automatic oilheater designed to separate refrigerant from oil, and oil cooler if required forproper performance. System shall provide positive pressure lubrication ofjournals, bearings and seals (if any), during start-up, operation, and coast-down of chiller, including power interruptions. On two compressor unitsprovide redundant oil pump.

5. Motor and Accessories: hermetically sealed, continuous duty, single speed,squirrel cage, induction type; full load operation of the motor shall not


10/16/00 141

exceed nameplate rating; rotor shaft shall be heat treated carbon steel anddesigned such that the first critical speed is well above the operating speed.Provide for removal of the stator for service or replacement withoutbreaking the main refrigerant piping connections.

6. Compressor Motor Starters: Provide factory mounted and wired starters.Starters shall be a star-delta closed transition type, of sizes, ratings, andelectrical characteristics scheduled; with a NEMA 1 enclosure. Providestarters with an electronic protection system to monitor and protect againstthree-phase overload, overload during starting, phase unbalance, and overand under voltage. Field wiring and electrical connections are specified inDivision 16.

B. Evaporator:

1. Shell and Water Boxes: fabricated from welded carbon steel plate. Provide150 psig maximum working pressure water boxes and nozzle connections.Provide suitable tappings in the water boxes and nozzles for control sensors,gages, and thermometers.

2. Water Heads: fabricated steel water heads with integral water connections.3. Tube Sheets: fabricated of thick carbon steel sheets welded to the shell and

drilled for tubes. Include intermediate tube support sheets as required toprevent tube vibration.

4. Tubes: individually replaceable, finned, seamless copper tubes; removablefrom either end of the heat exchanger without affection strength anddurability of the tube sheets and without causing leakage in adjacent tubes.Expand ends of tubes in tube sheets and intermediate tube support sheets fortight fit to prevent vibration of tubes. Provide suitable baffles or distributingplates in condenser tubes to evenly distribute refrigerant discharge gas onheat transfer tubes.

5. Pressure Limiting and Pressure Relief Devices: Manufacturer's standardcomplying with ASHRAE 15.

C. Condenser:

1. Coil: aluminum fin mechanically bonded to 5/8 inch OD seamless coppertubing. Subcooler circuit standard. Factory tested to 375 psig air-under-water.

2. Fan and Motor: vertical discharge, low speed, belt driven, propeller typefans; cycle to maintain head pressure. Form orifices to allow close tipclearance.

D. Auxiliary Condenser:

1. Shell and Water Boxes: fabricated from welded carbon steel plate. Provide150 psig maximum working pressure water boxes and nozzle connections.Provide suitable tappings in the water boxes and nozzles for control sensors,gages, and thermometers.

2. Water Heads: fabricated steel water heads with integral water connections.


10/16/00142

2.4 ACCESSORIES

A. Purge System: designed to evacuate non-condensable gases and water vapor fromthe system and for condensing, separating, and returning refrigerant to the system.Provide all necessary devices to automatically isolate purge system from chiller.

2.5 CONTROLS AND SAFETIES

A. Refrigerant Flow Control Devices:

1. Provide refrigerant flow control devices between evaporator and condensers(and elsewhere as required) to regulate refrigerant flow at volume andpressure required to maintain evaporator liquid refrigerant at level sufficientto keep cooler heat transfer tubes adequately wetted through full range ofchiller operation.

2. Design devices to permit chiller operation at scheduled conditions, and toallow condenser entering water temperature to decrease to minimumpermissible temperature or 1 deg. F (0.5 deg. C) above return chilled watertemperature.

B. Capacity Control:

1. Designed and fabricated to regulate evaporator leaving water temperature.Design for capacity modulation, from full load to scheduled minimum loadcapacity under normal operating conditions, without overshooting andwithout hunting at scheduled throttling range.

2. Provide variable guide vanes to provide stable operation without surge,cavitation, or vibration from 100 to 10 percent of full load capacity, withouthot-gas bypass.

3. Provide diffuser blocks, designed to operate at part load condition tominimize part load stall, to maintain compressor stability at any loadcondition.

C. Safety Controls:

1. Design cutouts to operate independently and factory wire to control panel.Design controls to stop compressor motor in event of low refrigerantpressure or temperature in evaporator; high condenser pressure, highcompressor discharge temperature, low evaporator leaving watertemperature (freeze-stat), high motor temperature, high bearing temperature,low oil pressure, high oil temperature, compressor motor overcurrent or overvoltage, or power interruption. Design each cutout to require manual re-starting of compressor.

2. Include anti-recycle timer, factory wired to control panel, limitingcompressor motor restarts at scheduled time intervals.

D. Operational Controls:


10/16/00 143

1. Provide controls to ensure that compressor will start only under unloadedcondition.

2. Provide sequencing controls to ensure lubrication of compressor motorbearings and seals (if any). Sequence as follows:a. 1) Run lubrication system oil so that compressor motor bearing is

lubricated before start-up,b. 2) Start compressor motor,c. 3) Provide lubrication during coast-down after compressor motor shut-

down.3. Provide modular electronic, solid state, or (if the building control system

allows) pneumatic controls.4. Design controls to automatically restart compressor after power failure

interruptions, provided minimum time between starts has been compiledwith.

E. Diagnostics: Provide a diagnostic module capable of indicating all lockoutconditions specified above, plus recording the elapsed time (pre-alarm to alarm), theoperating conditions of the compressor motor (amperes), refrigerant temperaturesand pressures, and chilled and condenser water temperatures (entering and leaving)at the time of lockout.

F. Control Panel:

1. Factory-mounted and wired. Provide gages or meters to indicate lowrefrigerant pressure in evaporator, high condenser pressure, and low oilpressure.

2. Provide switches and push-buttons designed to permit indicated operationsincluding the following:a. Manual and automatic operation of oil pump.b. Manual and automatic operation of oil separator heater.

3. Provide pilot lights or visual flag switches for indicated operations andcutouts including the following:a. Oil pump operation.b. Low chilled water temperature cutout.c. Low water flow cutout.d. Oil separator heater operation.e. Low evaporator refrigerant pressure or temperature cutout.f. High condenser pressure cutout.g. High motor winding temperature cutout.h. Low oil pressure cutout.i. Motor overload cutout.

4. Provide elapsed time meter designed to automatically record total chilleroperating time, in hours.

5. Provide electrical interlock to prevent chiller operation when chilled waterpump is not operating.

2.6 INSULATION


10/16/00144

A. Insulate evaporators and other cold surfaces to prevent condensation, with ambienthumidity of 75 percent and dry-bulb temperature of 90 deg. F (32 deg. C), no airmovement. Use the manufacturer's standard insulation material.

2.7 EQUIPMENT ENCLOSURE

A. All components except air cooled condenser and starter shall be housed in aweather-tight insulated metal equipment enclosure to protect equipment and providetempered environment for service. All starters and disconnects shall be located intheir own separate, weather-tight enclosure. Lighted equipment enclosure shallhave a 120-volt convenience outlet and electric unit heater for freeze protection to -20 deg. F ambient. High ambient units shall have a fan-coil unit instead of a unitheater. All enclosures shall be galvanized steel with factory finish.

2.8 FACTORY FINISH

A. Chiller manufacturer's standard factory finish.


A. Test and Inspect: centrifugal chillers in accordance with ASME Boiler andPressure Vessel Code, Section VIII, Division 1.

B. Performance Verification:

1. Rate centrifugal chillers in accordance with ARI 550 "Standard forCentrifugal or Rotary Water-Chilling Packages".

2. Provide a Coefficient Of Performance (COP) for centrifugal chillers not lessthan prescribed by ASHRAE 90A "Energy Conservation in New BuildingDesign".

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install chillers in accordance with manufacturers installation instructions.

B. Install chillers plumb and level, firmly anchored, and maintain manufacturer'srecommended clearances for servicing and maintenance.

C. Coordinate installation of roof curbs and equipment supports, and required roofpenetrations.

3.2 PIPING CONNECTIONS


10/16/00 145

A. Piping installation requirements are specified in other sections of Division 15. TheDrawings indicate the general arrangement of piping, fittings, and specialties. Thefollowing are specific connection requirements:

1. Install piping adjacent to machine to allow servicing and maintenance.2. Chilled Water Piping: Connect inlet to evaporator with controller bulb well,

shutoff valve, thermometer, strainer, flow switch, pressure gage, and unionor flange. Connect outlet to evaporator with shutoff valve, balancing cock,thermometer, pressure gage, and union or flange.

3. Auxiliary Condenser: Provide bypass valve to bypass water flow aroundauxiliary condenser when centrifugal chiller compressor is not operating.


A. Provide the services, to include a written report, of a factory authorized servicerepresentative to supervise the field assembly of the components, installation, andpiping and electrical connections.

3.4 DEMONSTRATION

A. Provide the services of a factory authorized service representative to provide start-up service and to demonstrate and train the Owner's maintenance personnel asspecified below.

B. Start-up Service:

1. Evacuate, dehydrate, vacuum pump and charge with specified refrigerant,and leak test in accordance with manufacturer's instructions. Test and adjustcontrols and safeties. Replace damaged or malfunctioning controls andequipment.

2. Perform lubrication service, including filling of reservoirs, and confirmingthat lubricant is of quantity and type recommended by manufacturer.

3. Do not place chillers in sustained operation prior to initial balancing ofmechanical systems for interface with chillers.

C. Training:

1. Train the Owner's maintenance personnel on start-up and shut- downprocedures, troubleshooting procedures, and servicing and preventativemaintenance schedules and procedures. Review with the Owner'spersonnel, the data contained in the Operating and Maintenance Manualsspecified in PART 1 of this Section and in Division 1.

2. Schedule training with Owner through the Architect/Engineer with at least 7days prior notice.

3.5 SCHEDULE


10/16/00146

PLAN NUMBER 1 2REFRIGERATION R-11 R-11CAPACITY TONS 315 442COMPRESSOR INPUT - KW 196 307EVAPORATORFLOW-GPM 756 960EWT-DEG. F 54.0 54.0LWT-DEG. F 44.0 44.0PD-FT 23.8 14.9FOULING FACTOR 0.0005 0.0005

COMPRESSOR MOTOR ELECTRICAL DATAVOLTS/PH/HZ 460/3/60 460/3/60FLA 275 427LRA 1755 2115HEAT RECOVERYHEAT CAP - MBH 5,876EWT DEG. F 95LWT DEG. F 105KW @ HEAT CAP 307FLOW - GPM 1200PD - FT 19.2REMARKS


147

SECTION 15711 – FACTORY-FABRICATED COOLINGTOWERS

PART 1 - GENERAL


A. Related Sections: The following Sections contain requirements that relate to thisSection:

1. Division 15 Section "Vibration Control" for vibration isolation requirementsof factory-fabricated cooling towers.

2. Division 15 Section "Mechanical Insulation" for cooling tower condenserwater piping.

3. Division 15 Section "Hydronic Piping" for condenser water pipingrequirements of factory-fabricated cooling towers.

4. Division 15 Section "Condenser Water Treatment System" for cooling towercondenser water chemical treatment.

1.2 SUMMARY

A. This Section includes a factory-fabricated, induced-draft, crossflow coolingtower.

1.3 SUBMITTALS


1. Product data, three copies required, including rated capacities, pressure drop,fan performance data, weights (shipping, installed, and operating), installationinstructions, startup instructions, and rating curves with selected points clearlyindicated.

2. Shop drawings indicating dimensions, weight loadings, weight distribution,and clearances required around and between construction elements such asbeams, columns, and walls.

3. Wiring diagrams for power supply wiring to cooling towers and ladder-typewiring diagrams for interlock and control wiring. Clearly differentiatebetween factory-installed and field-installed wiring.

4. Maintenance data for each cooling tower. Include parts lists for tower fill,water distribution system, fans, bearings, fan drives, vibration isolators,controls, and all accessories.

15755 HEAT EXCHANGERS

10/16/00148

5. Certified performance curves plotting leaving-water temperature(LWT)against wet-bulb temperature (WBT).


A. Manufacturer's Certification: Certify cooling tower's thermal performanceaccording to CTI Standard 201.

B. NEMA Compliance: Provide electric motors and electrical components required aspart of factory-fabricated cooling towers that comply with applicable NEMAStandards.

C. NEC Compliance: Install cooling towers according to NFPA 70 "NationalElectrical Code."

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide cooling towersmanufactured by one of the following:

1. Induced-Draft, Crossflow Cooling Towers:a. The Marley Cooling Tower Company.

2.2 INDUCED-DRAFT, CROSSFLOW COOLING TOWERS

A. Description: Induced-draft, crossflow cooling tower that is factory fabricated andfield erection using manufacturer's standard design, materials, and constructionaccording to published product information and these specifications.

B. Fan Description: Propeller fan.

1. Fan Blade: Cast aluminum or high strength, inert composite material withadjustable pitch.

2. Fan Drive: Gear drive with speed reducer. Oil level sight glass.3. Fan Bearings: Self-aligning ball bearings or bronze sleeve bearings.

Provide external, extended grease lines and fittings.4. Fan Motor: Totally enclosed, fan-cooled, energy-efficient NEMA motor,

insulated for cooling tuner duty.5. Motor Speed: Single speed, compatible with variable frequency drive.6. Vibration Cutout Switch: De-energize fan motors if excessive vibration

occurs due to fan imbalance.

C. Hot-Water Distribution System: For even distribution of water over fill material.


10/16/00 149

1. Hot-Water Basin: Stainless steel basin material with Coating DesignationG 210; provide with gravity-feed nozzles, and stainless steel basin covers.

D. Hot-Water Basin Control Valves: For balancing flow to each distribution basin andfor shutting off during servicing.

E. Casing: Galvanized steel; conforming to ASTM A 525 with Coating DesignationG 210.

1. Fasteners: Corrosion resistance equal to or better than the materials beingfastened.

2. All joints sealed water tight.3. Welded connections continuous and water tight.4. Rigging supports for handling cooling towers at construction site.

F. Collecting Basin: Galvanized steel conforming to ASTM A 525, with CoatingDesignation G 210, or stainless steel with the following accessories:

1. Overflow connection.2. Make-up water connection.3. Bottom drain connection.

G. Fill Material: Formed PVC, resistant to rot, decay, and biological attack with amaximum flame-spread rating of 5 per ASTM E 84 and fabricated, formed, andinstalled by the manufacturer to ensure that water breaks up into droplets.

H. Drift Eliminator Material: Formed PVC resistant to rot, decay, and biologicalattack with a maximum flame-spread rating of 5 per ASTM E 84.

I. Louver Material: Formed PVC resistant to rot, decay, and biological attack with amaximum flame-spread rating of 5 per ASTM E 84.

J. Water Level Control Clayton Hytrol make-up water valve, and a plastic or bronzefloat with an adjustable linkage.

K. Handrails: Galvanized-steel pipe rails that comply with requirements of 29 CFR1910.23 (OSHA).

L. Ladders: Galvanized-steel pipe rails that comply with requirements of 29 CFR1910.27 (OSHA).

M. Safety Cage: Galvanized-steel pipe rails that comply with requirements of 29 CFR1910.27 (OSHA).

N. Vibration Control: Direct isolation (no base) and vibration isolators recommendedby manufacturer.

O. Variable Speed Drive: complete drive system, one per cell, in NEMA 1 or 12enclosure capable of controlling motor a range of 10% to 110% of base motor


10/16/00150

speed. Provide door-interlocked power disconnect, magnetic bypass mode withautomatic transfer upm VFD failure, solid state, microprocessor-based controller.Mount controls on front of enclosure consisting of start-stop pushbuttonsbypass/VFD selector switch, auto/manual selector switch and manual speedpotentiometer.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine proposed route of moving cooling towers into place and verify that it isfree of interferences.

B. Examine elements and surfaces intended to support cooling tower.

C. Verify piping rough-in locations.

D. Verify that each cooling tower conforms to regulatory and specificationrequirements.

E. Do not proceed until any unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install cooling towers according to equipment manufacturer's written instructions.

B. Install cooling towers plumb, level, and anchor.

C. Maintain manufacturer's recommended clearances for servicing and maintenance.

D. Piping Connections: Maintain clearances for cooling tower service andmaintenance.

E. Install flanged or union connections to cooling tower.

F. Install flexible pipe connections for towers mounted on vibration isolators.

G. Pitch piping down to drain into sump.

H. Install shutoff/balancing valves at cooling tower inlet connections.

I. Provide shutoff valves at cooling tower outlets.

J. Connect overflow drain and bleed lines to sanitary sewage system.


10/16/00 151

K. Electrical Wiring: Install electrical devices furnished by manufacturer but notspecified to be factory mounted.


A. Manufacturer's Field Service: Provide services of a factory-authorized servicerepresentative to supervise component field assembly and cooling towerinstallation, including piping and electrical connections. Supply start up engineer toidentify and lock out critical speeds and verify proper operation of VFD. Reportresults for above in writing.

3.4 ADJUSTING

A. Balance condenser water flow to each tower inlet.

B. Adjust water level control for proper operating level.

3.5 CLEANING

A. Clean towers using materials and methods recommended by manufacturers.

B. Clean finishes to remove dust and dirt.

C. Touch up scratches in unfinished surfaces to restore corrosion resistance.

D. Touch up scratches in finished surfaces to restore finish.

3.6 COMMISSIONING

A. Operate equipment controls and safeties.

B. Lubricate rotating parts.

C. Verify fan rotation direction.

D. Verify that motor amperage according to manufacturer's data.

3.7 DEMONSTRATION

A. Startup Services: Provide the services of a factory-authorized service representativeto provide startup service and to demonstrate and train Owner's maintenancepersonnel as specified below. Include the following:

1. Cooling tower startup.2. Cooling tower shutdown.3. Troubleshooting procedures.


10/16/00152

4. Cooling tower servicing.5. Preventative maintenance schedules and procedures.6. Operating controls and safeties.7. Four hours of training on maintenance and operation of the VFD system.


153

SECTION 15755 - HEAT EXCHANGERS


PART 1 - GENERAL

1.1 SUMMARY

A. THIS SECTION INCLUDES HEAT EXCHANGERS FOR HVACAPPLICATIONS.

B. Related Section: The following Section contains requirements that relate to thisSection:

1. Division 15 Section "Mechanical Insulation."

1.2 SUBMITTALS

A. Product data, three copies required, for each heat exchanger, including ratedcapacities, pressure drop, weights (shipping, installed, and operating), andinstallation and startup instructions.

B. Shop drawings, three copies required, detailing heat exchanger installation,including plans, elevations, and sections. Indicate heat exchanger dimensions,rough-in requirements, weight loadings and distribution, and clearances requiredaround and between construction elements such as beams, columns, and walls.

C. Maintenance data for heat exchangers to include in the operation and maintenancemanual specified in Division 1. Include detailed manufacturer's instructions forservicing heat exchangers, preventative maintenance requirements withrecommended schedules.


A. Manufacturer Qualifications: Firm experienced in manufacturing heat exchangerssimilar to those indicated for this Project and that have a record of successful in-service performance.

B. ASME Compliance: Fabricate and stamp heat exchangers to comply with ASMEBoiler and Pressure Vessel Code, Section VIII, Division 1.


10/16/00154

1.5 COORDINATION

A. Coordinate layout and installation of heat exchangers with piping system andadjacent work.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Shell-and-Tube Heat Exchangers:a. Armstrong Pumps, Inc.b. Harsco Corp.; Patterson-Kelley Co.c. ITT Fluid Technology Corporation.; ITT Bell & Gossett.

2.2 RATINGS

A. Maximum Temperature: 375 deg F (190 deg C).

B. Maximum Shell Pressure: 225 psig (1551 kPa).

C. Maximum Tube Pressure: 300 psig (2068 kPa).

D. Heat Exchanger Type: Steam to water.

2.3 SHELL-AND-TUBE HEAT EXCHANGERS

A. Shell and Head Materials: Steel shell and cast-iron head. Shell shall be stampedwith U-symbol, and furnished with Form U-1 denoting compliance with ASMECode, Section VIII, Paragraph U-69, for construction of unfired pressure vessels;shell shall have an exterior coat of rustproof paint.

B. Tube and Tube Sheet Materials: Seamless 90-10 Cupri – nickel alloy tubes withsteel tube sheets, designed to allow unrestricted expansion without abrasion or wearof the tubes. Heat exchange tubes shall be of the U bend style, properly supportedwith intermediate baffle sheets.

C. Head and tube configures for easy removal for inspection and cleaning.

PART 3 - EXECUTION

3.1 EXAMINATION


10/16/00 155

/A. Examine elements and surfaces to receive work for compliance with installationtolerances and for structural rigidity, strength, anchors, and other conditionsaffecting performance of the heat exchanger. Do not proceed with installation untilunsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. Install heat exchangers according to manufacturer's written instructions.

B. Install heat exchangers plumb and level; anchor with supports.

C. Maintain manufacturer's recommended clearances for service and maintenance.Install piping connections maintaining clearances for service and maintenance ofheat exchangers.

D. Install threaded or flanged connections at heat exchangers.

E. Install shutoff valves at heat exchanger inlet and outlet connections.

3.3 COMMISSIONING

A. Verify that heat exchanger installation complies with manufacturer's submittal andinstallation requirements of Division 15 Sections. Do not proceed with startup untilinstallation is acceptable to manufacturer's representative.

B. Start heat exchanger according to manufacturer's instructions.

C. Adjust flows and controls to deliver specified performance.

D. Operate and adjust controls and safeties.

3.4 CLEANING

A. Inspect exposed finish after completing system installation, including pipeconnections, fittings, valves, and specialties. Remove burrs, dirt, and constructiondebris, and repair damaged finishes, including chips, scratches, and abrasions.

3.5 DEMONSTRATION


B. Review data in the operation and maintenance manualsInclude startup, shutdown,troubleshooting procedures, servicing, and preventive maintenance schedules andprocedures.

C. Schedule training with Owner with at least 7 days' advance notice.


10/16/00156


157

SECTION 15781 - PACKAGED HEATING AND COOLINGUNITS

PART 1 - GENERAL

1.1 SUMMARY

A. It is the intent of the University to refrain or minimize the use of PackagedHeating and Cooling Units. Consult with the University prior toimplementing any design associated with Packaged Units.


158

SECTION 15782 - ROOFTOP HEATING AND COOLINGUNITS

PART 1 - GENERAL

1.1 SUMMARY

A. It is the intent of the University to refrain or minimize the use of rooftop heatingand cooling units. Consult with the University prior to implementing any designassociated with rooftop units.


159

SECTION 15786 - WATER-SOURCE HEAT PUMPS

PART 1 - GENERAL

1.1 SUMMARY

A. It is the intent of the University to refrain or minimize the use of heat pumpsystems. Consult with the University prior to implementing any design associatedwith heat pump systems.


160

SECTION 15810 - HUMIDIFIERSPART 1 - GENERAL

1.1 SUMMARY

A. This Section includes humidifiers for installation in HVAC ducts and plenums.

1.2 SUBMITTALS

A. Product data, three copies required, including rated capacities of selected models,weights (shipping, installed, and operating), furnished specialties, and accessories.

B. Shop drawings, three copies required, detailing fabrication and installation ofhumidifiers and dispersion tubes, including plans, elevations, sections, details ofcomponents, and attachments to other units of Work. Detail connections to waterpiping.

C. Wiring diagrams detailing power and control wiring and differentiating clearlybetween manufacturer-installed wiring and field-installed wiring.

D. Maintenance data for humidifiers to include in the operation and maintenancemanual. Include detailed manufacturer's instructions on startup, shutdown,troubleshooting, preventive maintenance, and servicing. Include parts list, list ofaccessories, and recommended maintenance schedule.


A. Manufacturer Qualifications: Firm experienced in manufacturing humidifierssimilar to those indicated for this Project and that have a record of successful in-service performance.

B. ARI Compliance: Test and rate humidifiers according to ARI 620.

C. Comply with NFPA 70 for components and installation.

D. Listing and Labeling: Provide products specified in this Section that are listed andlabeled.

1. The Terms "Listed" and "Labeled": As defined in the National ElectricalCode, Article 100.


E. Coordinate layout and installation of humidifiers with duct and air handlers.

15810 HUMIDIFIERS

10/16/00 161

1. Revise locations and elevations as required to suit field conditions and toassure proper humidifier operation, and as approved by owner or designprofessional.


A. Deliver, store, and handle humidifiers according to manufacturer'srecommendations.

B. Store humidifiers on elevated platforms in a dry location.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Self-Contained Humidifiers:a. Armstrong International, Inc.b. Nortec Industries, Inc.

2.2 SELF-CONTAINED HUMIDIFIERS

A. Description: Self-contained humidifier of size and capacity indicated.

B. Replaceable Cylinder: Plastic cylinder containing electrodes.

C. Steam Dispersion: Stainless-steel dispersion tube mounted in airstream andconnecting steam hose, and fasteners.

D. Cabinet: Painted sheet-metal enclosure for housing replaceable cylinder, electricalwiring and components, and controls. Hinged or removable access door.

E. Electrical Wiring and Controls: Factory-wired electrical disconnect switch forsingle-point external power connection, remote humidistat, indicator lights ordisplay panel to show unit status.

F. Drain Cycle: Automatically controlled with timer, field adjustable for duration andinterval.

G. Water Supply: Provide air gap in fill line to prevent backflow of water into supplyline.

H. Optional Accessories: Include the following:

15810 HUMIDIFIERS

10/16/00162

1. Duct-mounted, high-limit humidistat; installed and wired by controlscontractor.

2. Network capability, Lonmark compatible.

I. Humidistat- by controls contractor.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine ducts and air handlers to receive humidifiers for compliance withrequirements for installation tolerances and other conditions affecting performanceof humidifiers. Do not proceed with installation until unsatisfactory conditionshave been corrected.

3.2 INSTALLATION

A. Install humidifiers as indicated, according to manufacturer's written instructions andARI 640.

B. Allow clearance for maintenance and service.

C. Seal humidifier dispersion tube ductwork penetrations.

D. Connect humidifier and components as indicated and instructed by manufacturer.

E. Electrical Wiring: Install electrical devices furnished by manufacturer but notspecified to be factory mounted. Furnish copy of manufacturer's wiring diagramsubmittal to electrical Installer.

F. Ground electrically operated humidifiers and components.

3.3 COMMISSIONING

A. Startup Services: Provide the services of a factory-authorized service representativeto provide startup service.

B. Verify that electrical wiring installation complies with manufacturer's submittal andinstallation requirements of Division 16 Sections. Do not proceed with startup untilwiring installation is acceptable to equipment Installer.

C. Start humidifiers according to manufacturer's instructions.

D. Operate and adjust controls and safeties.

E. Set Humidistat: Verify relative humidity and calibrate as required.

15810 HUMIDIFIERS

10/16/00 163

3.4 CLEANING

A. Clean factory-finished surfaces. Repair marred or scratched surfaces withmanufacturer's touchup paint.

3.5 DEMONSTRATION


B. Discuss data in the operation and maintenance manuals with owners personnel.Schedule seven days in advance.


164

SECTION 15830 - TERMINAL UNITS

PART 1 - GENERAL


A. Division-15 Basic Mechanical Materials and Methods sections apply to work of thissection.

1.2 DESCRIPTION OF WORK

A. Extent of terminal unit work is indicated by drawings and schedules, and byrequirements of this section.

B. Types of terminal units include the following:

1. Finned tube radiation.2. Convectors.3. Unit heaters.4. Cabinet heaters.5. Coils.

C. Refer to other Division-15 sections for piping; ductwork; and testing, adjusting andbalancing of terminal units; not work of this section.

D. Refer to Division-16 sections for the following work; not work of this section.

1. Power supply wiring from power source to power connection on terminalunit.

E. Provide the following electrical work as work of this section, complying withrequirements of Division-16 sections:

1. Control wiring specified as work of Division 15 forElectronic/Pneumatic Controls is work of that section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of terminalunits, of types and sizes required, whose products have been in satisfactory use insimilar service for not less than 3 years.


15830 TERMINAL UNITS

10/16/00 165

1. I=B=R Compliance: Test and rate baseboard and finned tube radiation inaccordance with I=B=R, provide published ratings bearing emblem ofI=B=R.

2. ARI Compliance: Provide coil ratings in accordance with ARI Standard 410"Forced-Circulation Air-Cooling and Air-Heating Coils".

3. ASHRAE Compliance: Test coils in accordance with ASHRAE Standard33 "Methods of Testing Forced Circulation Air Cooling and Heating Coils".

4. UL Compliance: Provide electrical components for terminal units whichhave been listed and labeled by UL.

1.4 SUBMITTALS

A. Product Data: Submit manufacturer's specifications for terminal units showingdimensions, capacities, ratings, performance characteristics, gauges and finishes ofmaterials, and installation instructions.

B. Shop Drawings: Submit assembly-type shop drawings showing unit dimensions,construction details, and field connection details.

C. Wiring Diagrams: Submit manufacturer's electrical requirements for power supplywiring to terminal units. Submit manufacturer's ladder-type wiring diagrams forinterlock and control wiring. Clearly differentiate between portions of wiring thatare factory-installed and portions to be field-installed.

D. Samples: Submit 3 samples of each type of cabinet finish furnished.

E. Maintenance Data: Submit maintenance instructions, including lubricationinstructions, filter replacement, motor and drive replacement, recommendedschedules for routine and preventative maintenance and spare parts lists. Includethis data, product data, and shop drawings in maintenance manuals.


A. Handle terminal units and components carefully to prevent damage, breaking,denting and scoring. Do not install damaged terminal units or components; replacewith new.

B. Store terminal units and components in clean dry place. Protect from weather, dirt,fumes, water, construction debris, and physical damage.

C. Comply with Manufacturer's rigging and installation instructions for unloadingterminal units, and moving them to final location.

PART 2 - PRODUCTS

2.1 FINNED TUBE RADIATION


10/16/00166

A. General: Provide finned tube radiation of lengths and in locations as indicated, andof capacities, style, and having accessories as scheduled.

B. Cabinets: Minimum 18-ga cold-rolled steel full backplate, minimum 16-ga front.Brace and reinforce front minimum of 4'-0" o.c. without visible fasteners.

C. Elements: Copper tube and aluminum fins, with tube mechanically expanded intofin collars to eliminate noise and ensure durability and performance at scheduledratings.

D. Finish: Flat black heat resisting paint for backplate; factory finished baked enamel,standard colors, on fronts and accessories.

E. Accessories:

1. End panels, inside and outside corners, and enclosure extensions.2. Access panels in front of valves, balancing cocks, and traps.3. Floor brackets for pedestal type.

F. Manufacturer: Subject to compliance with requirements, provide finned tuberadiation of one of the following:

1. Trane (The) Co.2. Vulcan Radiator Co.

2.2 CONVECTORS

A. General: Provide convectors having cabinet sizes and in locations as indicated, andof capacities, style, and having accessories as scheduled.

B. Cabinets: Minimum 16-ga steel front and top panels, 18-ga side panels, and 20-gaback panels. Phosphatize and galvanize back panels, phosphatize and paint tops,sides, and fronts, with one coat of primer. Secure fronts in place with quickopening slide bolts or camlock fasteners.

1. Recessed Cabinets: One-piece front panel, with 4-side gasketed overlap.

C. Elements: Aluminum fins, ribbed steel side plates, fin tube supports and coppertubes, cast-iron headers. Factory-test each element to 150 psi air pressure underwater.

D. Accessories: Provide the following accessories:

1. Factory-mounted dampers.2. 1/2" insulation on cabinet back.3. Access doors in front for valve access.

E. Manufacturer: Subject to compliance with requirements, provide convectors of oneof the following:


10/16/00 167

1. Dunham-Bush, Inc.2. Trane (The) Co.3. McQuay, Inc.

2.3 UNIT HEATERS

A. General: Provide unit heaters in locations as indicated, and of capacities, style, andhaving accessories as scheduled.

B. Horizontal Unit Heaters:

1. Casings: Construct of steel, phosphatized inside and out, and finished withbaked enamel. Provide motor-mounted panel, minimum of 18-ga steel.Fabricate casing to enclose coil, louvers, and fan blades. Provide louvers for4-way air diffusion.

2. Fans: Construct of aluminum, and factory-balance. Provide fan inletorifice, smooth, and drawn into casing back panel.

C. Vertical Unit Heaters:

1. Casings: Construct of steel, phosphatized inside and out, and finished withbaked enamel. Design casing to enclose fan, motor, and coil, design fanorifice formed into discharge panel. Provide air diffusers as scheduled.

2. Fans: Construct of aluminum and factory-balance. Design so motor and fanassembly is removable through fan outlet panel.

D. Coils: Construct of plate-type aluminum fins, mechanically bonded to coppertubes. Design coil for use in steam or hot water applications.

E. Motors: Provide totally enclosed motors, with built-in overload protection, havingelectrical characteristics as scheduled.

F. Manufacturer: Subject to compliance with requirements, provide unit heater of oneof the following:

1. Dunham-Bush, Inc.2. McQuay, Inc.3. Trane (The) Co.

2.4 CABINET HEATERS

A. General: Provide cabinet heaters having cabinet sizes and in locations as indicated,and of capacities, style, and having accessories as scheduled. Include in basic unitchassis, coil, fanboard, fan wheels, housings, motor, and insulation.

B. Chassis: Galvanized steel wrap-around structural frame with edges flanged.


10/16/00168

C. Insulation: Faced, heavy density glass fiber.

D. Cabinet: 16-ga removable front panel, 18-ga top and side panels. Insulate frontpanel over entire coil section. Provide access door on coil connection side. Cleancabinet parts, bonderize, phosphatize, and flow-coat with baked-on primer.

E. Water Coils: Construct of 5/8" seamless copper tubes mechanically bonded toconfigurated aluminum fins. Design for 300 psi and leak test at 300 psi underwater. Provide same end connections for supply and return.

F. Steam Coils: Construct of 1" seamless copper tubes mechanically bonded toconfigurated aluminum fins. Design for 75 psi and leak test at 450 psi under water.Provide cast-iron headers, and same end connections for supply and return.

G. Fans: Provide centrifugal, forward curved double width fan wheels constructed ofnon-corrosive, molded, fiberglass-reinforced thermo-plastic material. Construct fanscrolls of galvanized steel.

H. Motors: Provide shaded pole motors with integral thermal over-load protection,and motor cords for plug-in to junction box in unit. Multispeed motors with unitmounted speed selective switch.

I. Filters: Provide 1" thick throwaway type filters in fiberboard frames. See altersection.

J. Accessories: Provide the following accessories as indicated and/ or scheduled:

1. Wall Boxes: Provide aluminum wall boxes with integral eliminators andinsect screen.

2. Recessing Flanges: Provide 18-ga steel flanges for recessing cabinet heatersinto wall or ceiling.

3. Sub-bases: Provide 18-ga steel sub-base for vertical units, height asindicated.

4. Extended Oilers: Provide plastic motor oiler tubes extending to beneath topdischarge grille.

5. Unit mounted thermostat for single power connection as indicated.

K. Controls: Controls that interface with building automation systems shall be“Lonmark” compliant.

L. Manufacturer: Subject to compliance with requirements, provide cabinet heaters ofone of the following:

1. Dunham-Bush, Inc.2. McQuay, Inc.3. Trane (The) Co.

PART 3 - EXECUTION


10/16/00 169

3.1 INSPECTION

A. Examine areas and conditions under which terminal units are to be installed. Donot proceed with work until unsatisfactory conditions have been corrected inmanner acceptable to Installer.

3.2 INSTALLATION OF FINNED TUBE RADIATION

A. General: Install finned tube radiation as indicated, and in accordance withmanufacturer's installation insturctions.

B. Locate finned tube radiation on outside walls, run cover wall-to-wall unlessotherwise indicated.

C. Center elements under windows. Where multiple windows occur over units, divideelement into equal segments centered under each window.

D. Install end caps where units butt against walls. Install access panels centered infront of each shutoff valve, balancing cock, steam trap, or temperature controlvalve.

3.3 INSTALLATION OF CONVECTORS

A. General: Install convectors as indicated, and in accordance with manufacturer'sinstallation instructions.

B. Locate convectors as indicated, coordinate with other trades to assure correct recesssize for recessed convectors.

3.4 INSTALLATION OF UNIT HEATERS

A. General: Install unit heaters as indicated, and in accordance with manufacturer'sinstallation instructions.

B. Uncrate units and inspect for damage. Verify that nameplate data corresponds withunit designation.

C. Hang units from building substrate, not from piping. Mount as high as possible tomaintain greatest headroom possible unless otherwise indicated.

D. Support units with rod-type hangers anchored to building substrate.

E. Install piping as indicated.

F. Protect units with protective covers during balance of construction.

3.5 INSTALLATION OF CABINET HEATERS


10/16/00170

A. General: Install cabinet heaters as indicated, and in accordance with manufacturer'sinstallation instructions.

B. Locate cabinet heaters as indicated, coordinate with other trades to assure correctrecess size for recessed units.

C. Install piping as indicated.

D. Protect units with protective covers during balance of construction.

3.6 ELECTRICAL WIRING

A. General: Install electrical devices furnished by manufacturer but not specified to befactory-mounted. Furnish copy of manufacturer's wiring diagram submittal toElectric Installer.

1. Verify that electrical wiring installation is in accordance with manufacturer'ssubmittal and requirements of Division-16 sections. Do not proceed withequipment start-up until wiring installation is acceptable to equipmentinstaller.


A. General: After construction is completed, including painting, clean unit exposedsurfaces, vacuum clean terminal coils and inside of cabinets.

B. Retouch any marred or scratched surfaces of factory-finished cabinets, using finishmaterials furnished by manufacturer.

C. Install new filter units for terminals requiring same.


171

SECTION 15850 - AIR HANDLING


PART 1 - GENERAL



1. "Basic Mechanical Requirements."2. "Basic Materials and Methods."

1.2 SUMMARY

A. This Section includes the following types of air-handling units:

1. Central station air handling units for indoor installations.2. Utility set fans.3. Inline centrifugal fans.4. Power ventilators: roof- and wall-mounted.5. Propeller fans.


1. Division 15 Section "Vibration Control" for vibration hangers and supports,isolation.

2. Division 15 Section "Electric Control Systems" for electric control devices.3. Division 15 Section "Pneumatic Control System" for pneumatic control

devices.4. Division 15 Section "Sequence of Operations" for control sequence

descriptions.5. Division 15 Section "Testing, Adjusting, and Balancing" for air-handling

systems testing, adjusting, and balancing requirements and procedures.6. Division 16 for disconnect switches, variable frequency drives, motor

starters.

C. Products furnished but not installed under this Section include roof curbs for roof-mounted fans.

1.3 SUBMITTALS

15850 AIR HANDLING

10/16/00172

A. General: Submit, 3 copies required, the following:

1. Product data for selected models, including specialties, accessories, and thefollowing:a. Certified fan performance curves with system operating conditions

indicated.b. Certified fan sound power ratings.c. Motor ratings and electrical characteristics plus motor and fan

accessories.d. Materials gages and finishes.e. Dampers, including housings, linkages, and operators.

2. Shop drawings from manufacturer detailing equipment assemblies andindicating dimensions, weights, required clearances, components, andlocation and size of field connections.

3. Wiring diagrams that detail power, signal, and control wiring. Differentiatebetween manufacturer-installed wiring and field-installed wiring.

4. Product certificates, signed by manufacturers of central station air-handlingunits, certifying that their products comply with specified requirements.

5. Maintenance data for air-handling units, for inclusion in Operating andMaintenance Manual.

6. Field quality control reports specified in part 3 of this section.


A. UL Compliance: Fans and central station air-handling units shall be UL listed andlabeled.

B. Nationally Recognized Testing Laboratory and NEMA Compliance (NRTL): Fansand components and central station air-handling units shall be NRTL listed andlabeled. The term "NRTL" shall be as defined in OSHA Regulation 1910.7.

C. NEMA Compliance: Motors and electrical accessories shall comply with NEMAstandards.

D. Electrical Component Standard: Components and installation shall comply withNFPA 70 "National Electrical Code."

E. AMCA Labelled.

F. NFPA compliance: Central-station air-handling units shall be designed, fabricated,and installed in compliance with NFPA Standard 90A “Standard for the Installationof Air Conditioning and Ventilating Systems.”

G. ARI Certification: Central-station air-handling units and their components shall befactory tested in accordance with the applicable portions of ARI 430 – Standard forCentral-Station Air-Handling Units and shall be listed and bear the label of the Air-Conditioning and Refrigeration Institute.

15850 AIR HANDLING

10/16/2000 173


A. Lift and support units with the manufacturer's designated lifting or supportingpoints.

B. Disassemble and reassemble units as required for movement into the final locationfollowing manufacturer's written instructions.

C. Deliver units as a factory-assembled unit to the extent allowable by shippinglimitations, with protective crating and covering.


A. Coordinate the size and location of concrete equipment pads. Cast anchor boltinserts into pad.

B. Coordinate the installation of roof curbs, equipment supports, and roof penetrations.

C. Coordinate the size and location of structural steel support members.

D. Coordinate installation with roof contractor.

1.7 EXTRA MATERIALS

A. Furnish one additional complete set of belts and filters for each belt-driven central-station air-handling unit.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Central air-handling units:a. York Internationalb. Mcquayc. Trane Co.

2. Utility Sets:a. Barry Blowerb. Cook (Loren) Co.c. Greenheck Fan Corp.d. Trane Co.

3. Inline Centrifugal Fans:a. Cook (Loren) Co.b. Greenheck Fan Corp.

15850 AIR HANDLING

10/16/00174

4. Power Ventilators:a. Cook (Loren) Co.b. Greenheck Fan Corp.

5. Propeller Fans:a. Cook (Loren) Co.b. Greenheck Fan Corp.


A. Testing Requirements: The following factory tests are required:

1. Sound Power Level Ratings: Comply with AMCA Standard 301 "Methodfor Calculating Fan Sound Ratings From Laboratory Test Data." Test fans inaccordance with AMCA Standard 300 "Test Code for Sound Rating." Fansshall be licensed to bear the AMCA Certified Sound Ratings Seal.

2. Fan Performance Ratings: Establish flow rate, pressure, power, air density,speed of rotation, and efficiency by factory tests and ratings in accordancewith AMCA Standard 210/ASHRAE Standard 51 - Laboratory Methods ofTesting Fans for Rating.

2.3 FANS, GENERAL

A. General: Provide fans that are factory fabricated and assembled, factory tested, andfactory finished, with indicated capacities and characteristics.

B. Fans and Shafts: Statically and dynamically balanced and designed for continuousoperation at the maximum rated fan speed and motor horsepower.

1. Fan Shaft: Turned, ground, and polished steel designed to operate at nomore than 70 percent of the first critical speed at the top of the speed rangeof the fan's class.

C. Belt Drives: Factory mounted, with final alignment and belt adjustment made afterinstallation.

1. Service Factor: 2.0.

D. Belts: Oil-resistant, nonsparking, and nonstatic, matched set.

E. Motors and Fan Wheel Pulleys: Adjustable pitch for use with motors through 15HP; fixed pitch for use with motors larger than 15 HP. Select pulley so that pitchadjustment is at the middle of the adjustment range at fan design conditions.

1. Belt Guards: Provide OSHA approved, steel belt guards for motorsmounted on the outside of the fan cabinet with provisions for readilyviewing tension and measuring shaft speed.

2. Sheaves shall have split, taper style bushings.

15850 AIR HANDLING

10/16/2000 175

F. Shaft Bearings: Provide type indicated, having a median life "Rating Life"(AFBMA L50) of 200,000, calculated in accordance with AFBMA Standard 9 for

ball bearings and AFBMA Standard 11 for roller bearings. Bearings on shafts 1 ¾”or larger shall be grease lubricated. Provide extensions on grease fittings ifinaccessible.

G. Factory Finish: The following finishes are required:

1. Sheet Metal Parts: Prime coating prior to final assembly.2. Exterior Surfaces: Baked-enamel finish coat after assembly.

H. Motors: See section 15030.

2.4 CENTRAL STATION AIR HANDLING UNITS

A. General Description: Factory assembled, sectionalized units consisting of fans,motor and drive assembly, coils, damper, plenums, filters, drip pans, mixingdampers and other accessories as indicated or scheduled.

B. Types: Central-station air-handling units included in this project are of thefollowing types:

1. Blow-through.2. Draw-through.

C. Motor and Electrical Components: Refer to Division 15 Section "ElectricalRequirements for Mechanical Equipment."

D. Cabinet Materials: Formed and reinforced galvanized double wall insulated steelpanels, fabricated to allow removal for access to internal parts and components,with joints between sections sealed.

1. Medium- and high-pressure units shall be constructed with additionalbracing and supports. Units rated at 5.5 inches w.g. and higher shallconnected to accessories sections with double-thickness neoprene-coatedflexible connection.

E. Insulation: Comply with NFPA Standard 90A "Standard for the Installation of AirConditioning and Ventilating Systems," for insulation.

1. Type: Coated, glass-fiber insulation, 2 inch thick and having a minimumdensity of 1-1/2 pcf.

2. Location and Application: Factory encapsulated between inner liner and outercasing panel.

15850 AIR HANDLING

10/16/00176

F. Access Panels and Doors: Double wall insulated doors complete with hinges,latches, handles, and gaskets. Latches shall be of the quick opening type.

1. Fan section shall have inspection and access panels and doors sized andlocated to allow periodic maintenance and inspections.

G. Drain Pans: Formed sections of stainless steel. Fabricate pans in sizes and shapesto collect condensate from cooling coils (including coil piping connections andreturn bends). Fill space between double- wall construction with foam insulationand seal moisturetight.

1. Drain connections: both ends of the pan. Pitch in both directions to allowcomplete drainage; standing water prohibited.

2. Units with stacked coils shall have an intermediate drain pan or a drain troughto collect condensate from top coil.

H. Fan Sections

1. Testing Requirements: The following factory tests are required:a. General: Sound power level ratings shall comply with AMCA

Standard 301 "Method for Calculating Fan Sound Ratings FromLaboratory Test Data" and shall be the result of tests made inaccordance with AMCA Standard 300 "Test Code for Sound Rating."Fans shall be licensed to bear the AMCA Certified Sound RatingsSeal.

b. Unit's fans performance ratings for flow rate, pressure, power, airdensity, speed of rotation, and efficiency shall be factory tested andratings established in accordance with AMCA Standard 210/ASHRAEStandard 51 - Laboratory Methods of Testing Fans for Rating.

2. Fan Section Construction: Fan section shall be equipped with a formed steelchannel base for integral mounting of fan, motor, and casing panels. The fanscroll, wheel, shaft, bearings, and motor shall be mounted on a structural steelframe with frame mounted on base with vibration isolators of 2” minimumheight.

3. Fans and Shafts: Statically and dynamically balanced and designed forcontinuous operation at the maximum rated fan speed and motor horsepower.Fan wheel shall be double-width, double-inlet type with forward-curvedblades or backward-curved airfoil section blades as indicated. Forward-curved blade wheels shall be galvanized steel or bonderized steel painted withbaked-enamel finish. Airfoil wheels shall be steel painted with zinc chromateprimer and an enamel finish coat. Fan shaft shall be solid steel, turned,ground, and polished. Fan wheels shall be keyed to the shaft.

4. Shaft Bearings: Grease-lubricated ball bearings selected for 200,000 hours'average life, with grease fittings extended to an accessible location outside thefan section.

5. Fan Drives: Designed for a 2.0 service factor and factory mounted with finalalignment and belt adjustment made after installation.

15850 AIR HANDLING

10/16/2000 177

a. Belt Drive: Motors and fan wheel pulleys shall be adjustable pitch foruse with motors up to and including 15 HP and fixed pitch for use withmotors larger than 15 HP.

b. Motors shall normally be mounted internally within fan cabinets. Ifmotors cannot be mounted on the inside of the fan cabinet, providesteel belt guards.

I. Coils1. Testing Requirements and General Information: Refer to section 15790 and

as scheduled or indicated.2. Coil Sections: Factory assembled double wall insulated section designed and

constructed to facilitate removal of coil for maintenance and replacement andto assure full air flow through coils.a. Medium- and high-pressure units shall have double gaskets between

sections and coil connection penetrations through casing sealed tominimize leakage.

J. Dampers1. Testing and General Information: Refer to controls section.

a. Damper operators shall be pneumatically or electically operated basedon operating pressures and characteristics of the system.

b. Damper operators are specified in division 15 section“Electric/Pneumatic Control Systems.”

K. Filters1. Air Filters: Refer to Division 15886 “Air Filters” for air filters required for

air-handling units.2. Filter Section: Cabinet material and finish shall match the air-handling unit

cabinets, where integral filter sections are used. Section shall have accessdoors on both sides of the unit adequately sized for easy replacement of filters.

L. Mixing Boxes1. General: Mixing box shall consist of air blenders and mixing section fitted

together in one rigid section. Housing shall fit air handling unit without majormodification and be insulated and double wall construction to match airhandler. Air shall have uniform velocity access downstream components inair handler and shall be mixed by a counter rotational swirling of the airstream.

2. Mixing box shall be Blender Products or equivalent and shall meet theeffectiveness, pressure drops and velocity performance of Blender box.

2.5 UTILITY SET FANS

A. General Description: Belt-driven, centrifugal fans consisting of housing, wheel, fanshaft, bearings, motor and disconnect switch, drive assembly, and accessories.

15850 AIR HANDLING

10/16/00178

B. Housings: Fabricated from heavy-gage steel with side sheets fastened to scrollsheets by means of welding or deep lock seam.

1. Inlet: Round duct collar, with inlet cone bolted to fan housing, removablefor wheel service.

2. Discharge: Slip-joint duct connection.3. Housings Discharge Arrangement: Adjustable to 8 standard positions.

C. Fan Wheels: Single-width, single-inlet, welded to cast-iron or cast-steel hub andspun steel inlet cone, with hub keyed to the shaft. Metal thickness of wheels, scroll,and side sheets not to be less than that specified by AMCA for tag class of services.

1. Blade Materials: Steel.2. Blade Type: Backward-curved, die-formed, or air foil, as indicated.

D. Shaft Bearings: Prelubricated and sealed, self-aligning, pillow-block-type ballbearings. Bearing pedestals secured to main structured frame.

E. Spark-Resistant construction: Explosion proof motor end starter, non-sparkingwheel, where indicated.

2.6 INLINE CENTRIFUGAL FANS

A. General Description: Inline, belt-driven, centrifugal fans consisting of housing,wheel, outlet guide vanes, fan shaft, bearings, drive assembly, motor and disconnectswitch, mounting brackets, and accessories.

B. Housing: Split, spun-aluminum housing, with aluminum straightening vanes, inletand outlet flanges, and support bracket adaptable to floor, side wall, or ceilingmounting.

C. Belt-Drive Units: Motor mounted on adjustable base, with adjustable sheaves,enclosure around belts within fan housing, and lubricating tubes from fan bearingsextended to outside of fan housing.

D. Wheel: Aluminum, airfoil blades welded to aluminum hub.

E. Spark Resistant construction: Explosion proof motor and starter, non-sparkingwheel, where indicated.

F. Accessories: The following accessories are required as indicated:

1. Volume Control Damper: Manual operated with quadrant lock, located infan outlet.

2. Companion Flanges: For inlet and outlet duct connections.3. Fan Guards: Expanded metal in removable frame.

15850 AIR HANDLING

10/16/2000 179

4. Speed Control: Variable speed switch with on-off control and speed controlfor 100 to 50 percent of fan air delivery.

2.7 POWER VENTILATORS: ROOF AND WALL MOUNTED

A. General Description: Belt-driven or direct-drive as indicated, centrifugal consistingof housing, wheel, fan shaft, bearings, motor and disconnect switch, drive assembly,curb base, and accessories.

B. Housing: Heavy-gage, removable, spun-aluminum, dome top and outlet baffle;square, one-piece, hinged, aluminum base with venturi inlet cone.

C. Fan Wheel: Aluminum hub and wheel with backward-inclined blades.

D. Belt-Driven Drive Assembly: Resiliently mounted to the housing, with thefollowing features:

1. Pulleys: Cast-iron, adjustable-pitch.2. Shaft Bearings: Permanently lubricated, permanently sealed, self-aligning

ball bearings.3. Fan Shaft: Turned, ground, and polished steel drive shaft keyed to wheel

hub.4. Fan and motor isolated from exhaust air stream.

E. Accessories: The following items are required as indicated:

1. Disconnect Switch: Nonfusible type, with thermal overload protectionmounted inside fan housing, factory-wired through an internal aluminumconduit.

2. Bird Screens: Removable 1/2-inch mesh, 16-gage, aluminum or brass wire.3. Dampers: Counterbalanced, parallel-blade, backdraft dampers mounted in

curb base, factory set to close when fan stops.4. Roof Curbs: Prefabricated, heavy-gage, galvanized steel; mitered and

welded corners; 2-inch-thick, rigid, fiberglass insulation adhered to insidewalls; built-in cant and mounting flange for flat roof decks; and 2-inch woodnailer. Size as required to suit roof opening and fan base.a. Overall Height: 12 inches.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine areas and conditions, with Installer present, for compliance withrequirements for installation tolerances, housekeeping pads, and other conditionsaffecting performance of central-station air-handling units and fans.

15850 AIR HANDLING

10/16/00180

B. Examine rough-in for steam, hydronic, condensate drainage piping and electrical toverify actual locations of connections prior to installation.

C. Do not proceed until unsatisfactory conditions have been corrected.

3.2 INSTALLATION, GENERAL

A. Install central-station air-handling units and fans level and plumb, in accordancewith manufacturer's written instructions.

1. Support floor-mounted units on concrete equipment bases using neoprenepads. Secure units to anchor bolts installed in concrete equipment base.

2. Support floor-mounted units on concrete equipment bases using housedspring isolators. Secure units to anchor bolts installed in concreteequipment base.

3. Suspended Units: Suspend units from structural steel support frame usingthreaded steel rods and vibration isolation springs.

B. Arrange installation of units to provide access space around air-handling units forservice and maintenance.

C. Where steam coils are used, elevate coil section with factory or field fabricatedframes to allow gravity pitch of condensate system.

3.3 EQUIPMENT BASES

A. Construct concrete equipment pads as follows:

1. Coordinate size of equipment bases with actual unit sizes provided.Construct base 4 inches larger in both directions than the overall dimensionsof the supported unit.

2. Form concrete pads with framing lumber with form release compounds.Chamfer top edge and corners of pad.

3. Install reinforcing bars, tied to frame, and place anchor bolts and sleeves tofacilitate securing units.

4. Place concrete and allow to cure before installation of units. Use PortlandCement conforming to ASTM C 150, 4,000 psi compressive strength, andnormal weight aggregate.

3.4 CONNECTIONS

A. Piping installation requirements are specified in other Division 15 sections. TheDrawings indicate the general arrangement of piping, valves, fittings, andspecialties. The following are specific connection requirements:

1. Arrange piping installations adjacent to units to allow unit servicing andmaintenance.

15850 AIR HANDLING

10/16/2000 181

2. Connection piping to air-handling units with flexible connectors.3. Connect condensate drain pans using full size piping, Type M copper

tubing. Extend to the nearest equipment or floor drain. Construct deep trapat connection to drain pan and install cleanouts at changes in direction.Insulate drain connection.

B. Duct installations and connections are specified in other Division 15 sections.Make final duct connections with flexible connections.

C. Electrical Connections: The following requirements apply:

1. Electrical power wiring is specified in Division 16.2. Temperature control wiring and interlock wiring is specified in Division 15

Section "Electrical Control Systems/Pneumatic Control Systems.”3. Temperature control wiring and interlock wiring is specified in Division 15

Section "Electrical/Pneumatic Control Systems."4. Grounding: Connect unit components to ground in accordance with the

National Electrical Code.


A. Manufacturer's Field Inspection: Arrange and pay for a factory-authorized servicerepresentative to perform the following:

1. Inspect the field assembly of components and installation of central-stationair-handling units including piping, ductwork, and electrical connections.

2. Prepare a written report on findings and recommended corrective actions.

3.6 ADJUSTING, CLEANING, AND PROTECTING

A. Adjust water coil flow, with control valves to full coil flow, to indicated gpm.

B. Adjust damper linkages for proper damper operation.

C. Clean unit cabinet interiors to remove foreign material and construction dirt anddust. Vacuum clean fan wheel, fan cabinet, and coils entering air face.

3.7 COMMISSIONING

A. Final Checks Before Start-Up: Perform the following operations and checks beforestart-up:1. Remove shipping, blocking, and bracing.2. Verify unit is secure on mountings and supporting devices and that

connections for piping, ductwork, and electrical are complete. Verify properthermal overload protection is installed in motors, starters, and disconnects.

3. Perform cleaning and adjusting specified in this Section.

15850 AIR HANDLING

10/16/00182

4. Disconnect fan drive from motor and verify proper motor rotation directionand verify fan wheel free rotation and smooth bearings operations.Reconnect fan drive system, align belts, and install belt guards.

5. Lubricate bearings, pulleys, belts, and other moving parts with factory-recommended lubricants.

6. Set zone dampers to full open for each zone.7. Set face-and-bypass dampers to full face flow.8. Set outside-air and return-air mixing dampers to minimum outside-air

setting.9. Comb coil fins for parallel orientation.10. Install clean filters.11. Verify manual and automatic volume control, and fire and smoke dampers

in connected ductwork systems are in the full-open position.12. Disable automatic temperature control operators.

B. Starting procedures for central-station air-handling units:

1. Energize motor, verify proper operation of motor, drive system, and fanwheel. Adjust fan to indicated RPM.a. Replace fan and motor pulleys as required to achieve design

conditions.2. Measure and record motor electrical values for voltage and amperage.

C. Shut unit down and reconnect automatic temperature control operators.D. Refer to Division 15 Section "Testing, Adjusting, and Balancing" for procedures for

air-handling-system testing, adjusting, and balancing.

3.8 DEMONSTRATION

A. Demonstration Services: Arrange and pay for a factory-authorized servicerepresentative to train Owner's maintenance personnel on the following:

1. Procedures and schedules related to start-up and shut down, troubleshooting,servicing, preventative maintenance with specific recommendations andfrequencies, and how to obtain replacement parts.

2. Discussion of contents of Operating and Maintenance Manuals specified inDivision 15 Section "Basic Mechanical Requirements."

B. Schedule training with at least 7 days' advance notice.


183

SECTION 15886 - AIR FILTERS

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes the following types of air filters and accessories:

1. Extended-surface, disposable-panel filters.2. Filter frames.3. Filter gages.


1. Division 15 Section "Air Handling Units" for installing filters specified inthis Section for packaged and/or integral with air handling units.

2. Division 15 Section "Duct Accessories" for duct access doors required forair filters.

3. Division 15 Section for control wiring for automatic temperature controls.

1.2 SUBMITTALS

A. Product data, 3 copies required, including dimensions, weights, required clearancesand access, assembly, flow capacity including initial and final pressure drop at ratedair flow, efficiency and test method, and fire classification.

B. Maintenance data for each type of filter and rack required for inclusion in"Operating and Maintenance Manual".


A. NFPA Compliance: Comply with applicable portions of NFPA 90A and 90Bpertaining to installing air filters.

B. ASHRAE Compliance: Comply with provisions of ASHRAE Standard 52-76 formethod of testing and rating air filter units.

C. ARI Compliance: Comply with provisions of ARI Standard 850 pertaining totesting and performance of air filter units.


A. Lift and support factory-assembled units only at designated lifting or supportingpoints, as indicated on shop drawings. Deliver with protective crating and covering.

15891 METAL DUCTWORK

10/16/00184

1.5 EXTRA MATERIALS

A. Furnish extra materials packaged with protective covering for storage and identifiedwith labels clearly describing contents. Deliver extra materials to Owner.

1. Provide one complete extra set of filters for each filter bank. If systemincludes prefilters and afterfilters, provide both.

PART 2 - PRODUCTS

2.1 MANUFACTURERS


1. Air Filters and Filter Holding Systems:a. Farr Co.b. Fiberbond

2. Filter Gages:a. Dwyer Instruments, Inc.

2.2 EXTENDED-SURFACE, DISPOSABLE, PANEL FILTERS

A. Description: (4”) (2”) (1”) Factory-fabricated, dry, medium efficiency, extended-surface filters with holding frames in sizes and having performance characteristicsas indicated, and listed as class 2 by UL.

B. Media: Non woven cotton fabric type, formed into deep V-shaped pleats and heldin place by a welded wire grid bonded to media. Effective open area to be not lessthan 96%.

C. Media Frame: Nonflammable high wet strength with diagonal support membersbonded to each pleat frame to prevent unfiltered air from bypassing filter pack.

D. Sizes: 24”x 24”unless otherwise noted.

2.3 EXTENDED-SURFACE, DISPOSABLE BAG FILTERS

A. Description: Factory-fabricated, multi pocket, 100% synthetic media with anti-microbial agent, welded and self-supporting pocket, in sizes and performancecharacteristics as indicated; UL rating of at least class 2.


10/16/2000 185

B. Media: 100% synthetic media containing anti-microbial agent to inhibit mildewand bacteria growth, and approved by USDA and FDA.

C. Sizes: 24” x 24” unless otherwise noted.

2.4 FRONT AND REAR ACCESS FILTER FRAMES

A. Framing System: 16 gauge or better galvanized steel universal holding frames,designed for either upstream (front) or downstream (rear) filter servicing. Cut tosize and prepunch members for assembly into modules of size and capacity asindicated. Vertically support filters to prevent deflection of horizontal memberswithout interfering with either filter installation or operation. Bolted assembly notacceptable. Provide filter fasteners and centering capability.

B. Prefilters: Incorporate a separate track, removable from front or removable fromback, after removing afterfilters.

C. Sealing: Permanently gasket framing members to prevent bypass of unfiltered air.Provide factory-installed, non-deforming, positive-sealing device for each row offilters to ensure seal between filter elements.

2.5 SIDE-SERVICE HOUSINGS

A. Description: Factory-assembled, side-service housings with flanges to connect asindicated. Construct of 16-gage (1.6mm) galvanized steel.

B. Prefilters: Integral tracks to accommodate 2-inch (50mm) throw-away filters.Tracks to be adjustable and capable of accommodating universal holding frame.

C. Access Doors: Continuous gaskets on perimeter and positive locking devices.Arrange so filter cartridges can be loaded from either access door.

D. Sealing: Incorporate positive-sealing gasket material on channels to seal top andbottom of filter cartridge frames to prevent air bypass.

E. Provide brass static taps for pneumatic fittings between each filter bank.

2.6 FILTER GAGES

A. Diaphragm type with dial and pointer in metal case, vent valves, black figures onwhite background, and front recalibration adjustment. Electrical components andwiring leads to interface with Building Automation System.

1. Diameter: 3-1/2 inches (90 mm).2. Range: 0 - 2.0 inches wg (0 - 500 Pa).


10/16/00186

B. Accessories: Static-pressure tips, tubing, gage connections, and mounting bracket.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Install filter frames and assemblies where indicated.

B. Install filter frames level and plumb, following manufacturer's written instructions,the original design, and referenced standards.

C. Install air filters and holding devices of types indicated and where shown followingair filter manufacturer's written instructions and with recognized industry practicesto ensure that filters comply with requirements and serve intended purposes.

D. Locate each filter unit accurately in position indicated in relation to other work orsections. Position unit with clearance for normal service and maintenance.

E. Install filters in position to prevent passage of unfiltered air.

F. Install filter gage for each filter bank.

1. Install filter gage static-pressure tips upstream and downstream of filters toindicate air pressure drop through filter. Mount filter gages on outside offilter housing or filter plenum in an accessible position.

3.2 CONNECTIONS

A. Coordinate filter installations with duct and air-handling unit installations.


A. Manufacturer's Field Service: Provide services of a factory-authorized servicerepresentative to supervise the field assembly of components and installation offilters and filter frames. Report results in writing. Consult with University toobtain information on authorized service representative.

3.4 CLEANING


10/16/2000 187

A. After testing, adjusting, and balancing air-handling and air-distribution systems,clean filter housings and install new filter media.


188

SECTION 15891 - METAL DUCTWORK


PART 1 - GENERAL



1. "Basic Mechanical Requirements."2. "Basic Mechanical Materials and Methods."

1.2 SUMMARY

A. This Section includes rectangular and round, metal ducts and plenums for heating,ventilating, and air conditioning systems in pressure classes from minus 2 inches toplus 5 inches water gage.

B. Related Sections: The following sections contain requirements that relate to thisSection:1 Division 8 Section "Access Panels and Doors" for wall- and ceiling-

mounted access panels and doors for access to concealed ducts.2. Division 10 Section "Louvers and Vents" for intake and relief louvers and

vents connected to duct systems and installed in exterior walls.3. Division 15 Section "Mechanical Insulation" for exterior duct and plenum

insulation.4. Division 15 Section "Duct Accessories" for flexible duct materials, dampers,

duct-mounted access panels and doors, and turning vanes.

5. Division 15 Section "Diffusers, Registers, and Grilles."6. Division 15 Section "VAV/FPVAV Boxes," for constant-volume control

boxes, variable-air-volume control boxes, and reheat boxes.7. Division 15 Section "Electronic/Pneumatic Control Systems" for automatic

volume control dampers and operators.8. Division 15 Section "Testing, Adjusting, and Balancing."

1.3 DEFINITIONS

A. Sealing Requirements Definitions: For the purposes of duct systems sealingrequirements specified in this Section, the following definitions apply:


10/16/2000 189

1. Seams: A seam is defined as joining of two longitudinally (in the directionof airflow) oriented edges of duct surface material occurring between twojoints. All other duct surface connections made on the perimeter are deemedto be joints.

2. Joints: Joints include girth joints; branch and subbranch intersections; so-called duct collar tap-ins; fitting subsections; louver and air terminalconnections to ducts; access door and access panel frames and jambs; duct,plenum, and casing abutments to building structures.

1.4 SYSTEM PERFORMANCE REQUIREMENTS

A. The duct system design, as indicated, has been used to select and size air movingand distribution equipment and other components of the air system. Changes oralterations to the layout or configuration of the duct system must be specificallyapproved in writing. Accompany requests for layout modifications withcalculations showing that the proposed layout will provide the original designresults without increasing the system total pressure.

1.5 SUBMITTALS

A. Submit product data, 3 copies required, including details of construction relative tomaterials, dimensions of individual components, profiles, and finishes for thefollowing items:

1. Duct Liner.2. Sealing Materials.3. Fire-Stopping Materials.

B. Record drawings including duct systems routing, fittings details, reinforcing,support, and installed accessories and devices

C. Maintenance data for volume control devices, fire dampers, and smoke dampers, inaccordance with Division 15 Section "Basic Mechanical Requirements".


A. Qualify welding processes and welding operators in accordance with AWS D1.1"Structural Welding Code - Steel" for hangers and supports and AWS D9.1 "SheetMetal Welding Code."

B. NFPA Compliance: Comply with the following NFPA Standards:

1. NFPA 90A, "Standard for the Installation of Air Conditioning andVentilating Systems," except as indicated otherwise.



10/16/00190

A. Deliver sealant and fire-stopping materials to site in original unopened containers orbundles with labels informing about manufacturer, product name and designation,color, expiration period for use, pot life, curing time, and mixing instructions formulti- component materials.

B. Store and handle sealant fire-stopping materials in compliance with manufacturers'recommendations to prevent their deterioration or damage due to moisture, high orlow temperatures, contaminants, or other causes.

C. Deliver and store stainless steel sheets with mill-applied adhesive protective paper,maintained through fabrication and installation.

PART 2 - PRODUCTS

2.1 SHEET METAL MATERIALS

A. Sheet Metal, General: Provide sheet metal in thicknesses indicated, packaged andmarked as specified in ASTM A 700.

B. Galvanized Sheet Steel: Lock-forming quality, ASTM A 527, Coating DesignationG 90. Provide mill phosphatized finish for exposed surfaces of ducts exposed toview.

C. Stainless Steel: ASTM A 480, Type 316, sheet form, with No. 4 finish on exposedsurface for ducts exposed to view; Type 304, sheet form, with No. 1 finish forconcealed ducts.

D. Aluminum Sheets: ASTM B 209, Alloy 3003, Temper H14, sheet form; withstandard, one-side bright finish where ducts are exposed to view, and mill finish forconcealed ducts.

E. Reinforcement Shapes and Plates: Unless otherwise indicated, provide galvanizedsteel reinforcing where installed on galvanized sheet metal ducts. For aluminumand stainless steel ducts provide reinforcing of compatible materials.

F. Tie Rods: Galvanized steel, 1/4-inch minimum diameter for 36- inch length or less;3/8-inch minimum diameter for lengths longer than 36 inches.

2.2 DUCT LINER

Note: Ductwork is externally wrapped and interior lining is to be avoided exceptfor specific areas as indicated on drawings.

A. General: Comply with NFPA Standard 90A and TIMA Standard AHC- 101.

B. Materials: ASTM C 1071, Type II, with coated surface exposed to airstream toprevent erosion of glass fibers.


10/16/2000 191

1. Thickness: 1 inch.2. Density: 1-1/2 pounds.3. Thermal Performance: "K-Factor" equal to 0.28 or better, at a mean

temperature of 75 deg F.4. Fire Hazard Classification: Flame spread rating of not more than 25 without

evidence of continued progressive combustion and a smoke developedrating of no higher than 50, when tested in accordance with ASTM C 411.

5. Liner Adhesive: Comply with NFPA Standard 90A and ASTM C 916.6. Mechanical Fasteners: Galvanized steel, suitable for adhesive attachment,

mechanical attachment, or welding attachment to duct. Provide fastenersthat do not damage the liner when applied as recommended by themanufacturer, that do not cause leakage in the duct, and will indefinitelysustain a 50-pound tensile dead load test perpendicular to the duct wall.a. Fastener Pin Length: As required for thickness of insulation, and

without projecting more than 1/8 inch into the airstream.b. Adhesive For Attachment of Mechanical Fasteners: Comply with the

"Fire Hazard Classification" of duct liner system.

2.3 SEALING MATERIALS

A. Joint and Seam Sealants, General: The term sealant used here is not limited tomaterials of adhesive or mastic nature, but also includes tapes and combinations ofopen weave fabric strips and mastics.

B. Joint and Seam Tape: 2 inches wide, glass-fiber-fabric reinforced.

C. Tape Sealing System: Woven-fiber tape impregnated with a gypsum mineralcompound and a modified acrylic/silicone activator to react exothermically with thetape to form a hard, durable, airtight seal.

D. Joint and Seam Sealant: One-part, nonsag, solvent-release-curing, polymerizedbutyl sealant complying with FS TT-S-001657, Type I; formulated with a minimumof 75 percent solids.

E. Flanged Joint Mastics: One-part, acid-curing, silicone elastomeric joint sealants,complying with ASTM C 920, Type S, Grade NS, Class 25, Use O.

F. All stainless steel joints are to flanged unless noted otherwise.

2.4 FIRE-STOPPING

A. Fire-Resistant Sealant: Provide two-part, foamed-in-place, fire-stopping siliconesealant or one part elastometric sealant formulated for use in a through-penetrationfire-stop system for filling openings around duct penetrations through walls andfloors, having fire-resistance ratings indicated as established by testing identical


10/16/00192

assemblies per ASTM E 814 by Underwriters Laboratory, Inc. or other testing andinspecting agency acceptable to authorities having jurisdiction.

B. Products: Subject to compliance with requirements, provide one of the following:

1. "Dow Corning Fire Stop Foam"; Dow Corning Corp.2. "Pensil 851"; General Electric Co.3. "Dow Corning Fire Stop Sealant"; Dow Corning Corp.4. "3M Fire Barrier Caulk CP-25"; Electrical Products Div./3M.5. "RTV 7403"; General Electric Co.6. "Fyre Putty"; Standard Oil Engineered Materials Co.


A. Building Attachments: Concrete inserts, powder actuated fasteners, or structuralsteel fasteners appropriate for building materials. Do not use powder actuatedconcrete fasteners for lightweight aggregate concretes or for slabs less than 4 inchesthick.

B. Hangers: Galvanized sheet steel, or round, uncoated steel, threaded rod.

1. Hangers Installed In Corrosive Atmospheres: Electro-galvanized, all-threadrod or hot-dipped-galvanized rods with threads painted after installation.

2. Straps and Rod Sizes: Conform with Table 4-1 in SMACNA HVAC DuctConstruction Standards, 1985 Edition, for sheet steel width and gage andsteel rod diameters.

C. Duct Attachments: Sheet metal screws, blind rivets, or self- tapping metal screws;compatible with duct materials.

D. Trapeze and Riser Supports: Steel shapes conforming to ASTM A 36.

1. Where galvanized steel ducts are installed, provide hot-dipped- galvanizedsteel shapes and plates.

2. For stainless steel ducts, provide stainless steel support materials.3. For aluminum ducts, provide aluminum support materials, except where

materials are electrolytically separated from ductwork.

2.6 RECTANGULAR DUCT FABRICATION

A. General: Except as otherwise indicated, fabricate rectangular ducts with galvanizedsheet steel, in accordance with SMACNA "HVAC Duct Construction Standards,"Tables 1-3 through 1-19, including their associated details. Conform to therequirements in the referenced standard for metal thickness, reinforcing types andintervals, tie rod applications, and joint types and intervals.


10/16/2000 193

1. Fabricate rectangular ducts in lengths appropriate to reinforcement andrigidity class required for pressure classification.

2. Provide materials that are free from visual imperfections such as pitting,seam marks, roller marks, stains, and discolorations.

B. Static Pressure Classifications: Except where otherwise indicated, construct ductsystems to the following pressure classifications:

1. Supply Ducts: 3 inches water gage.2. Return Ducts: 2 inches water gage, negative pressure.3. Exhaust Ducts: 2 inches water gage, negative pressure.

C. Crossbreaking or Cross Beading: Crossbreak or bead duct sides that are 19 inchesand larger and are 20 gage or less, with more than 10 sq. ft. of unbraced panel area,as indicated in SMACNA "HVAC Duct Construction Standard," Figure 1-4, unlessthey are lined or are externally insulated.

2.7 RECTANGULAR DUCT FITTINGS

A. Fabricate elbows, transitions, offsets, branch connections, and other ductconstruction in accordance with SMACNA "HVAC Metal Duct ConstructionStandard," 1985 Edition, Figures 2-1 through 2-10.

2.8 SHOP APPLICATION OF LINER IN RECTANGULAR DUCTS

A. Adhere a single layer of indicated thickness of duct liner with 90 percent coverageof adhesive at liner contact surface area. Multiple layers of insulation to achieveindicated thickness is prohibited.

B. Apply a coat of adhesive to liner facing in direction of airflow not receiving metalnosing.

C. Butt transverse joints without gaps and coat joint with adhesive.

D. Fold and compress liner in corners of rectangular ducts or cut and fit to assurebutted edge overlapping.

E. Longitudinal joints in rectangular ducts shall not occur except at corners of ducts,unless the size of the duct and standard liner product dimensions make longitudinaljoints necessary.

1. Apply an adhesive coating on longitudinal seams in ducts exceeding 2,500FPM air velocity.

F. Secure liner with mechanical fasteners 4 inches from corners and at intervals notexceeding 12 inches transversely around perimeter; at 3 inches from transversejoints and at intervals not exceeding 18 inches longitudinally.


10/16/00194

G. Secure transversely oriented liner edges facing the airstream with metal nosings thatare either channel or "Z" profile or are integrally formed from the duct wall at thefollowing locations:

1. Fan discharge.2. Intervals of lined duct preceding unlined duct.3. Upstream edges of transverse joints in ducts.

H. Terminate liner with duct buildouts installed in ducts to attach dampers, turningvane assemblies, and other devices. Fabricated buildouts (metal hat sections) orother buildout means are optional; when used, secure buildouts to the duct wall withbolts, screws, rivets, or welds. Terminate liner at fire dampers at connection to firedamper sleeve through fire separation.

2.9 ROUND DUCT FABRICATION

A. General: "Basic Round Diameter" as used in this article is the diameter of the sizeof round duct that has a circumference equal to the perimeter of a given sized of flatoval duct. Except where interrupted by fittings, provide round in lengths not lessthan 12 feet.

B. Round Ducts: Fabricate round supply ducts with spiral lockseam construction,except where diameters exceed 72 inches. Fabricate ducts having diameters greaterthan 72 inches with longitudinal butt-welded seams. Comply with SMACNA"HVAC Duct Construction Standards," Table 3-2 for galvanized steel gages.

2.10 ROUND SUPPLY AND EXHAUST FITTINGS FABRICATION

A. 90-Degree Tees and Laterals and Conical Tees: Fabricate to conform to SMACNA"HVAC Duct Construction Standards," 1985 Edition, Figures 3-4 and 3-5 and withmetal thicknesses specified for longitudinal seam straight duct.

B. Diverging-Flow Fittings: Fabricate with a reduced entrance to branch taps with noexcess material projecting from the body onto branch tap entrance.

C. Elbows: Fabricate in die-formed, gored, pleated, or mitered construction. Fabricatethe bend radius of die-formed, gored, and pleated elbows 1.5 times the elbowdiameter. Unless elbow construction type is indicated, provide elbows meeting thefollowing requirements:

1. Mitered Elbows: Fabricate mitered elbows with welded construction ingages specified below.a. Mitered Elbows Radius and Number of Pieces: Unless otherwise

indicated, construct elbow to comply with SMACNA "HVAC DuctConstruction Standards," Table 3-1.

b. Round Mitered Elbows: Solid welded and with metal thickness listedbelow for pressure classes from minus 2 inches to plus 2 inches:


10/16/2000 195

1) 3 to 26 inches: 24 gage.2) 27 to 36 inches: 22 gage.3) 37 to 50 inches: 20 gage.4) 52 to 60 inches: 18 gage.5) 62 to 84 inches: 16 gage.

c. Round Mitered Elbows: Solid welded and with metal thickness listedbelow for pressure classes from 2 inches to 10 inches:1) 3 to 14 inches: 24 gage.2) 15 to 26 inches: 22 gage.3) 27 to 50 inches: 20 gage.4) 52 to 60 inches: 18 gage.5) 62 to 84 inches: 16 gage.

2. Round Elbows - 8 Inches and Smaller: Die-formed elbows for 45- and 90-degree elbows and pleated elbows for 30, 45, 60, and 90 degrees only.Fabricate nonstandard bend angle configurations or 1/2-inch-diameter (e.g.3-1/2- and 4-1/2- inch) elbows with gored construction.

3. Round Elbows - 9 Through 14 Inches: Gored or pleated elbows for 30, 45,60, and 90 degrees, except where space restrictions require a mitered elbow.Fabricate nonstandard bend angle configurations or 1/2-inch-diameter (e.g.9-1/2- and 10-1/2-inch) elbows with gored construction.

4. Round Elbows - Larger Than 14 Inches and All Flat Oval Elbows: Goredelbows, except where space restrictions require a mitered elbow.

5. Die-Formed Elbows for Sizes Through 8 Inches and All Pressures: 20 gagewith 2-piece welded construction.

6. Round Gored Elbows Gages: Same as for nonelbow fittings specifiedabove.

7. Pleated Elbows Sizes Through 14 Inches and Pressures Through 10 Inches:26 gage.

PART 3 - EXECUTION

3.1 DUCT INSTALLATION, GENERAL

A. Duct System Pressure Class: Construct and install each duct system for the specificduct pressure classification indicated.

B. Install ducts with the fewest possible joints.

C. Use fabricated fittings for all changes in directions, changes in size and shape, andconnections.

D. Install couplings tight to duct wall surface with projections into duct at connectionskept to a minimum.

E. Locate ducts, except as otherwise indicated, vertically and horizontally, parallel andperpendicular to building lines; avoid diagonal runs. Install duct systems in shortest


10/16/00196

route that does not obstruct useable space or block access for servicing building andits equipment.

F. Install ducts close to walls, overhead construction, columns, and other structuraland permanent enclosure elements of building.

G. Provide clearance of 1 inch where furring is shown for enclosure or concealment ofducts, plus allowance for insulation thickness, if any.

H. Install insulated ducts with 1-inch clearance outside of insulation.

I. Conceal ducts from view in finished and occupied spaces by locating in mechanicalshafts, hollow wall construction, or above suspended ceilings. Do not encasehorizontal runs in solid partitions, except as specifically shown.

J. Coordinate layout with suspended ceiling and lighting layouts and similar finishedwork.

K. Electrical Equipment Spaces: Route ductwork to avoid passing through transformervaults and electrical equipment spaces and enclosures.

L. Non-Fire-Rated Partition Penetrations: Where ducts pass interior partitions andexterior walls, and are exposed to view, conceal space between constructionopening and duct or duct insulation with sheet metal flanges of same gage as duct.Overlap opening on 4 sides by at least 1-1/2 inches.

3.2 DUCT LINING

A. Duct is normally wrapped externally. Internally line the following duct 1” thick:

1. All transfer ducts.

2. All supply duct downstream of VAV/FPVAV Boxes where shown on drawings.

3. All plenums above linear diffusers.

4. Other locations as shown on drawings.

3.3 SEAM AND JOINT SEALING

A. General: Seal duct seams and joints as follows:

B. Pressure Classifications Greater Than 3 Inches Water Gage: All transverse joints,longitudinal seams, and duct penetrations.

C. Pressure Classification 2 and 3 Inches Water Gage: All transverse joints andlongitudinal seams.


10/16/2000 197

1. Pressure Classification Less than 2 Inches Water Gage: Transverse jointsonly.

D. Seal externally insulated ducts prior to insulation installation.

3.4 HANGING AND SUPPORTING

A. Install rigid round, and rectangular metal duct with support systems indicated inSMACNA "HVAC Duct Construction Standards," Tables 4-1 through 4-3 andFigures 4-1 through 4-8.

B. Support horizontal ducts within 2 feet of each elbow and within 4 feet of eachbranch intersection.

C. Support vertical ducts at a maximum interval of 16 feet and at each floor.

D. Upper attachments to structures shall have an allowable load not exceeding 1/4 ofthe failure (proof test) load but are not limited to the specific methods indicated. Donot drill or punch holes in structural members for fastening of duct supports.

E. Install concrete insert prior to placing concrete.

F. Install powder actuated concrete fasteners after concrete is placed and completelycured.

3.5 CONNECTIONS

A. Equipment Connections: Connect equipment with flexible connectors inaccordance with Division 15 Section "Duct Accessories."

B. Branch Connections: Comply with SMACNA "HVAC Duct ConstructionStandards," Figures 2-7 and 2-8.

C. Outlet and Inlet Connections: Comply with SMACNA "HVAC Duct ConstructionStandards," Figures 2-16 through 2-18.

D. Terminal Units Connections: Comply with SMACNA "HVAC Duct ConstructionStandards," Figure 2-19.


A. The Owner will contract with an independent testing agency to perform, record, andreport leakage tests, unless otherwise indicated.

B. Remake leaking joints as required and apply sealants to achieve specified maximumallowable leakage.


10/16/00198


A. Adjust volume control devices as required by the testing and balancing proceduresto achieve required air flow. Refer to Division 15 Section "TESTING,ADJUSTING, AND BALANCING" for requirements and procedures for adjustingand balancing air systems.

B. Vacuum ducts systems prior to final acceptance to remove dust and debris.


199

SECTION 15910 - DUCTWORK ACCESSORIES

PART 1 - GENERAL




A. Extent of ductwork accessories work is indicated on drawings and in schedules, andby requirements of this section.

B. Types of ductwork accessories required for project include the following:

1. Dampers.a. Low pressure manual dampers.b. Control dampers.c. Counterbalanced relief dampers.

2. Fire and smoke dampers.3. Turning vanes.4. Duct hardware.5. Duct access doors.6. Flexible connections.

C. Refer to other Division-15 sections for testing, adjusting, and balancing of ductworkaccessories; not work of this section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture ofductwork accessories, or types and sizes required, whose products have been insatisfactory use in similar service for not less than 3 years.


1. SMACNA Compliance: Comply with applicable portions of SMACNA"HVAC Duct Construction Standards, Metal and Flexible".

2. Industry Standards: Comply with ASHRAE recommendations pertaining toconstruction of ductwork accessories, except as otherwise indicated.

3. UL Compliance: Construct, test, and label fire dampers in accordance withUL Standard 555 "Fire Dampers and Ceiling Dampers".

4. NFPA Compliance: Comply with applicable provisions of NFPA 90A "AirConditioning and Ventilating Systems", pertaining to installation ofductwork accessories.

15910 DUCTWORK ACCESSORIES

10/16/00200

1.4 SUBMITTALS

A. Product Data: Submit, manufacturer's technical product data, three copies required,for each type of ductwork accessory, including dimensions, capacities, andmaterials of construction; and installation instructions.

B. Shop Drawings: Submit manufacturer's assembly-type shop drawings, three copiesrequired, for each type of ductwork accessory showing interfacing requirementswith ductwork, method of fastening or support, and methods of assembly ofcomponents.

C. Maintenance Data: Submit manufacturer's maintenance data including parts listsfor each type of duct accessory. Include this data, product data, and shop drawingsin maintenance manual.

PART 2 - PRODUCTS

2.1 DAMPERS

A. Low Pressure Manual Dampers: Provide dampers of single blade type ormultiblade type, constructed in accordance with SMACNA "HVAC DuctConstruction Standards".

B. Control Dampers: Refer to Division-15 section "Control Systems" for controldampers; not work of this section.

C. Counterbalanced Relief Dampers: Provide dampers with parallel blades,counterbalanced and factory-set to relieve at indicated static pressure. Constructblades of extruded aluminum with airfoil cross section, gasketed edges, aluminumtie rod linking blades, provide 1/2" diameter ball bearings, 1/2" diameter steel axlesspaced on 9" centers. Construct frame of 2" x 1/2" x 1/8" steel channel for faceareas 25 sq. ft. and under; 4" x 1-1/4" x 16-ga. channel for face area over 25 sq. ft.Provide galvanized steel finish on frame with aluminum touch-up.

D. Manufacturer: Subject to compliance with requirements, provide dampers of one ofthe following:

1. Air Balance, Inc.2. American Warming & Ventilating, Inc.3. Louvers & Dampers, Inc.4. Ruskin Mfg. Co.

2.2 FIRE AND SMOKE DAMPERS


10/16/2000 201

A. Fire Dampers: Provide fire dampers, of types and sizes indicated. Constructcasings of 11-ga. galvanized steel. Provide fusible link rated at 160 to 165oF (71 to74oC) unless otherwise indicated. Provide damper with positive lock in closedposition, and with the following additional features:

1. Damper Blade Assembly: Curtain type, blades out of airstream.2. Blade Material: Steel, match casing.3. Blade Material: Stainless steel for all systems constructed of stainless steel.4. Closure spring for horizontal position.

2.3 TURNING VANES

A. Fabricated Turning Vanes: Provide fabricated turning vanes and vane runners,constructed in accordance with SMACNA "HVAC Duct Construction Standards".

B. Manufactured Turning Vanes: Provide turning vanes constructed of 1-1/2" widecurved blades set at 3/4" o.c., supported with bars perpendicular to blades set at 2"o.c., and set into side strips suitable for mounting in ductwork.

C. Manufacturer: Subject to compliance with requirements, provide turning vanes ofone of the following:

1. Aero Dyne Co.2. Duro Dyne Corp.3. Hart & Cooley Mfg. Co.4. Register & Grille Mfg. Co., Inc.

2.4 DUCT HARDWARE

A. General: Provide duct hardware, manufactured by one manufacturer for all itemson project, for the following:

1. Test Holes: Provide in ductwork at fan inlet and outlet, and elsewhere asindicated, duct test holes, consisting of slot and cover, for instrument tests.

2. Quadrant Locks: Provide for each damper, quadrant lock device on one endof shaft; and end bearing plate on other end for damper lengths over 12".Provide extended quadrant locks and end extended bearing plates forexternally insulated ductwork.

B. Manufacturer: Subject to compliance with requirements, provide duct hardware ofone of the following:

1. Ventfabrics, Inc.2. Young Regulator Co.


10/16/00202

2.5 DUCT ACCESS DOORS

A. General: Provide where indicated, duct access doors of size indicated. Where sizesare not indicated, provide 18” X 18” door in ducts 22”and wider, and providemaximum width door as recommended for mounting by door manufacturer forsmaller ducts.

B. Construction: Construct of same or greater gage as ductwork served, provideinsulated doors for insulated ductwork. Provide flush frames for uninsulatedductwork, extended frames for externally insulated duct. Provide one size hinged,other side with one handle-type latch for doors 12" high and smaller, 2 handle-typelatches for larger doors.

C. Manufacturer: Subject to compliance with requirements, provide duct access doorsof one of the following:

1. Air Balance Inc.2. Duro Dyne Corp.3. Register & Grille Mfg. Co., Inc.4. Ruskin Mfg. Co.

2.6 FLEXIBLE CONNECTIONS

A. General: Provide flexible duct connections wherever ductwork connects tovibration isolated equipment. Construct flexible connections of neoprene-coatedflameproof fabric crimped into duct flanges for attachment to duct and equipment.Make airtight joint. Provide adequate joint flexibility to allow for thermal, axial,transverse, and torsional movement, and also capable of absorbing vibrations ofconnected equipment.

B. Manufacturer: Subject to compliance with requirements, provide flexibleconnections of one of the following:

1. Duro Dyne Corp.2. Flexaust (The) Co.3. Ventfabrics, Inc.

PART 3 - EXECUTION

3.1 INSPECTION


10/16/2000 203

A. Examine areas and conditions under which ductwork accessories will be installed.Do not proceed with work until unsatisfactory conditions have been corrected inmanner acceptable to Installer.

3.2 INSTALLATION OF DUCTWORK ACCESSORIES

A. Install ductwork accessories in accordance with manufacturer's installationinstructions, with applicable portions of details of construction as shown inSMACNA standards, and in accordance with recognized industry practices toensure that products serve intended function.

B. Install turning vanes in square or rectangular 90o elbows in supply and exhaust airsystems, and elsewhere as indicated.

C. Install access doors to open against system air pressure, with latches operable fromeither side, except outside only where duct is too small for person to enter.

D. Coordinate with other work, including ductwork, as necessary to interfaceinstallation of ductwork accessories properly with other work.

E. Install manual balancing dampers in all low pressure duct branches.


A. Operate installed ductwork accessories to demonstrate compliance withrequirements. Test for air leakage while system is operating. Repair or replacefaulty accessories, as required to obtain proper operation and leakproofperformance.


A. Adjusting: Adjust ductwork accessories for proper settings, install fusible links infire dampers and adjust for proper action.

1. Label access doors in accordance with Division-15 section "MechanicalIdentification".

2. Final positioning of manual dampers is specified in Division-15 section"Testing, Adjusting, and Balancing".

B. Cleaning: Clean factory-finished surfaces. Repair any marred or scratched surfaceswith manufacturer's touch-up paint.


10/16/00204


205

SECTION 15932 - AIR OUTLETS AND INLETS

PART 1 - GENERAL


A. Extent of air outlets and inlets work is indicated by drawings and schedules, and byrequirements of this section.

B. Types of air outlets and inlets required include the following:

1. Ceiling air diffusers.2. Wall registers and grilles.3. Louvers.

C. Refer to other Division-15 sections for ductwork and duct accessories required inconjunction with air outlets and inlets; not work of this section.

D. Refer to other Division-15 sections for balancing of air outlets and inlets; not workof this section.


A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of airoutlets and inlets of types and capacities required, whose products have been insatisfactory use in similar service for not less than 5 years.


1. ARI Compliance: Test and rate air outlets and inlets in accordance withARI 650 "Standard for Air Outlets and Inlets".

2. ASHRAE Compliance: Test and rate air outlets and inlets in accordancewith ASHRAE 70 "Method of Testing for Rating the Air Flow Performanceof Outlets and Inlets".

3. NFPA Compliance: Install air outlets and inlets in accordance with NFPA90A "Standard for the Installation of Air Conditioning and VentilatingSystems".

1.3 SUBMITTALS

A. Product Data: Submit manufacturer's technical product data, three copies required,for air outlets and inlets including the following:

1. Schedule of air outlets and inlets indicating drawing designation, roomlocation, number furnished, model number, size, and accessories furnished.

15932 AIR OUTLETS AND INLETS

10/16/00206

2. Data sheet for each type of air outlet and inlet, and accessory furnished;indicating construction, finish, and mounting details.

3. Performance data for each type of air outlet and inlet furnished, includingaspiration ability, temperature and velocity traverses, throw and drop, andnoise criteria ratings. Indicate selections on data.

B. Maintenance Data: Submit maintenance data, including cleaning instructions forfinishes, and spare parts lists. Include this data, product data, and shop drawings inmaintenance manuals.

1.4 PRODUCT DELIVERY, STORAGE AND HANDLING

A. Deliver air outlets and inlets wrapped in factory-fabricated fiberboard typecontainers. Identify on outside of container type of outlet or inlet and location to beinstalled. Avoid crushing or bending and prevent dirt and debris from entering andsettling in devices.

B. Store air outlets and inlets in original cartons and protect from weather andconstruction work traffic. Where possible, store indoors; when necessary to storeoutdoors, store above grade and enclose with waterproof wrapping.

PART 2 - PRODUCTS

2.1 AIR DIFFUSERS/REGISTERS/GRILLES

A. General: Except as otherwise indicated, provide manufacturer's standard ceiling airdiffusers where shown; of size, shape, capacity and type indicated; constructed ofmaterials and components as indicated, and as required for complete installation.

B. Performance: Provide ceiling air diffusers that have, as minimum, temperature andvelocity traverses, throw and drop, and noise criteria ratings for each size device aslisted in manufacturer's current data.

C. Ceiling Compatibility: Provide diffusers with border styles that are compatible withadjacent ceiling systems, and that are specifically manufactured to fit into ceilingmodule with accurate fit and adequate support.

D. Types: Provide ceiling diffusers of type, capacity, and with accessories and finishesas listed on diffuser schedule.

E. Manufacturer: Subject to compliance with requirements, provide diffusers of oneof the following:

1. Krueger Mfg. Co.2. Titus Products Div.; Philips Industries, Inc.3. Tuttle & Bailey; Div. of Interface Corp.

15932 AIR OUTLETS AND INLETS

10/16/2000 207

2.2 LOUVERS

A. General: louvers are specified in Division 10. Coordinate size, style and finishwith drawings and specifications.

PART 3 - EXECUTION

3.1 INSPECTION

A. Examine areas and conditions under which air outlets and inlets are to be installed.Do not proceed with work until unsatisfactory conditions have been corrected.

3.2 INSTALLATION

A. General: Install air outlets and inlets in accordance with manufacturer's writteninstructions and in accordance with recognized industry practices to ensure thatproducts serve intended functions.

B. Coordinate with other work, including ductwork and duct accessories, as necessaryto interface installation of air outlets and inlets with other work.

C. Locate ceiling air diffusers, registers, and grilles, as indicated on generalconstruction "Reflected Ceiling Plans", or on mechanical plans. Unless otherwiseindicated, locate units in center of acoustical ceiling modules.

D. Adjust blow pattern of all diffusers once building is occupied so as not to createobjectionable drafts.

E. Each grille, register, or diffuser shall have a manual damper installed in the duct forrough balance. Note that this is above and beyond any damper which may bespecified as part of the diffuser device. Manual dampers are not required whereused for transfer or relief duty.

3.3 SPARE PARTS

A. Furnish to Owner, with receipt, 3 operating keys for each type of air outlet and inletthat require them.


208

SECTION 15934 - VAV/FPVAV BOXES

PART 1 - GENERAL




A. Extent of air terminals work required by this section is indicated on drawings andschedules, and by requirements of this section.

B. Types of air terminals specified in this section include the following

1. Variable Volume Boxes2. Variable Volume Boxes with integral hot water coils.

C. Refer to other Division-15 sections for testing, adjusting and balancing of airterminals; not work of this section.

E. Refer to other Division-15 sections for temperature controls that are to be furnishedby others but installed as work of this section.

F. Refer to Division-16 sections for the following work; not work of this section.

1. Power supply wiring from power source to power connection on airterminals. Include starters, disconnects, and required electrical devices,except where specified as furnished, or factory-installed, by manufacturer.


A. Manufacturer's Qualifications: Firm regularly engaged in manufacture of airterminals with characteristics, sizes, and capacities required, whose products havebeen in satisfactory use in similar service for not less than 5 years.

B. Codes and Standards

1. ADC Compliance: Provide air terminals which have been tested and ratedin accordance with ADC standards and bear ADC Seal.

2. NFPA Compliance: Construct air terminals using acoustical and thermalinsulations complying with NFPA 90A "Air Conditioning and VentilatingSystems".

15950 CONTROLS AND INSTRUMENTATION

10/16/2000 209

1.4 SUBMITTALS

A. Product Data: Submit, three copies required, manufacturer's technical product data,including performance data for each size and type of air terminal furnished;schedule showing drawing designation, room location, number furnished, modelnumber, size, and accessories furnished; and installation and start-up instructions.

B. Shop Drawings: Submit, three copies required, manufacturer's assembly-type shopdrawings indicating dimensions, weight loadings, required clearances, and methodsof assembly of components.

C. Wiring Diagrams: Submit ladder-type wiring diagrams for electric power andcontrol components, clearly indicating required field electrical connections.

D. Maintenance Data: Submit maintenance data and parts list for each type of airterminal; including "trouble-shooting" maintenance guide. Include this data,product data, shop drawings, and maintenance data in maintenance manual.


A. Deliver air terminals wrapped in factory-fabricated fiberboard type containers.Identify on outside of container type of air terminal and location to be installed.Avoid crushing or bending and prevent dirt and debris from entering and settling inboxes.

B. Store air terminals in original cartons and protect from weather and constructionwork traffic. Where possible, store indoors; when necessary to store outdoors, storeabove grade and enclose with waterproof wrapping.

PART 2 - PRODUCTS


A. Manufacturer: Subject to compliance with requirements, provide air terminals ofthe following manufacturer:

1. Titus Products Div.; Philips Industries, Inc.2. Trane Co.

2.2 VAV BOXES

A. General: Provide factory-fabricated and tested pressure independent single ductvariable volume boxes as indicated, selected with performance characteristics thatmatch or exceed those indicated on schedule.

15934 VAV / FPAV BOXES

10/16/00210

B. Casings: 22 gauge galvanized steel, internally lined with minimum 3/4” 1 1/2pound density fiberglas insulation, complying with UL 181 and NFPA 90A.

1. Provide hanger brackets for attachments of supports.2. Leakage: Construct casings such that when subjected to 3.0-in w.g., total

leakage does not exceed 1% of specified design air flow capacity withoutlets sealed and inlets wide open. Construct air dampers such that whensubjected to 3.0-in w.g. inlet pressure with damper closed, total leakage doesnot exceed 1% of specified air flow capacity.

C. Air Dampers or valves: Construct of materials that cannot corrode, do not requirelubrication, nor require periodic servicing. Provide maximum volume dampers,both pressure dependent and pressure compensated, that are calibrated in cfm,factory-adjusted, and marked for specified minimum and maximum air capacities.Provide mechanism to vary air volume through damper or valve for minimum tomaximum, in response from signal from thermostat.

D. Controls: Factory mount DDC controller, varister and electronic actuator providedunder “Electronic/Pneumatic Controls” section. Closely coordinate controlsinstallation with Controls contractor. Provide internal fusing, air flow sensor, andterminal strip. Provide integrel 120 volt/24 volt transformer of sufficient capacityto run unit, as well as all external valving. Factory test entire unit. Controls shall be“Lonmark” compliant.

E. Identification: Provide individual label on each unit indicating Plan Number, cfmrange, cfm factory-settings, and calibration curve. Provide a detailed wiringdiagram attached to each unit.

F. Hot Water Heating Coils: Where indicated on plans or schedules provide heatingcoils contructed of copper tubes and aluminum fins with galvanized steel casing.

2.3 NOTE: Use of Fan-Powered VAV Boxes is avoided by the University. If needarises for usage, consult with University.

PART 3 - EXECUTION

3.1 INSPECTION

A. Examine areas and conditions under which air terminals are to be installed. Do notproceed with work until unsatisfactory conditions have been corrected in manneracceptable to Installer.

3.2 INSTALLATION OF VAV/FPVAV BOXES

A. General: Install air terminals as indicated, and in accordance with manufacturer'sinstallation instructions.


10/16/2000 211

B. Location: Install each unit level and accurately in position indicated in relation toother work; and maintain sufficient clearance for normal service and maintenance,but in no case less than that recommended by manufacturer. Any unit located so asto not provide adequate serviceability shall be relocated by the contractor at theirexpense.

C. Duct Connections: Connect ductwork to air terminals in accordance with Division-15 ductwork sections. Connections to medium pressure shall be with conical taps.Provide a minimum of three inlet diameters of straight duct at inlet connection toeach unit.

D. Make pipe connections to hot water coils with swing joints to allow flexibility.Coils shall include ball valve on supply, control valve and circuit setter on return,manual air vent and drain valves with hose and fitting and cap unless shownotherwise on drawings.


A. Upon completion of installation and prior to initial operation, test and demonstratethat air terminals, and duct connections to air terminals, are leak-tight.

B. Repair or replace air terminals and duct connections as required to eliminate leaks,and retest to demonstrate compliance.

3.4 CLEANING

A. Clean exposed factory-finished surfaces. Repair any marred or scratched surfaceswith manufacturer’s touch-up paint.


212

SECTION 15950 – CONTROLS AND INSTRUMENTATION

PART 1 - GENERAL

1.1 INTERACTION

A. Electronic direct digital controls (DDC) are the preferred method of controllingbuilding HVAC and other mechanical systems at WMU.

B. A campus Ethernet, modem, or other LAN connection must be installed early in thelife of a project (if one does not already exist) so that the controls contractor andWMU personnel can remotely access the control system at the earliest possible time.It is preferable that this is the permanent connection, rather than a temporaryconnection, so graphical access is possible.

C. All HVAC control systems shall interface with the existing Invensys (Siebe, Barber-Colman) Network 8000 control system at WMU, using BACnet (on Ethernet),LonTalk (ANSI/EIA-709.1 on FTT-10 twisted pair), or Network 8000 proprietaryprotocols. “Interface” means that all monitoring and control points can be accessedfrom, and/or transferred to or from, the existing Network 8000 Global ControlModule network.

D. All monitoring and control points in a controller shall have the ability to be monitoredfrom WMU’s existing HVAC graphical interface system. In addition, set points shallhave change access from this system.

1.2 INSTALLATION

A. LonWorks installations shall be installed so that different subsystems (HVAC, fire,access, elevator, etc.) are each installed on separate segments of the LON network.Routers can connect these segments to each other if control schemes or user interfacerequire it.

B. All wiring in mechanical spaces, or areas with exposed ceilings shall be installed inconduit or electrical trays.

C. A duplex receptacle must be located within 6 feet of any control cabinet that containsa programmable device.

D. All sensor and bus wiring shall be labeled at each end to identify what device and/orcontact point is at the other end of the wire.

E. All DDC thermostats shall have LAN access from the thermostat.

1.3 SOFTWARE


10/16/00 213

A. The control contractor shall provide WMU’s EMCS/Network Manager with allsoftware needed to access and/or program any and all programmable devices installedon a job.

B. Maintenance Time Reminders shall not be specified unless the design professionalsprovide the control contractor with specific time intervals for each piece of equipmentthat is to have an MTR. These time intervals shall be in accordance with theequipment O&M recommendations.

1.4 DOCUMENTATION

A. The control contractor shall provide WMU’s EMCS/Network Manager with allprogramming manuals relevant to any and all programmable devices installed on ajob.

B. As-built control drawings shall indicate the location of all control devices.

C. As-built control drawings shall indicate the proper device layout sequence of allcontrol devices on a daisy chain communications bus.

1.5 TRAINING

A. One week of school at the factory-training site shall be provided for every $200,000in controls cost to a project.

B. The control contractor shall provide training time on each project to fully familiarizeWMU’s controls trades, on site, with the complete control functionality of allcontrolled equipment. One hour of this training time shall be provided for every$50,000 in controls cost to a project.

214

SECTION 15970 – CONTROL SYSTEMS EQUIPMENT

PART 1 - GENERAL

1.1 DEFINITIONS

A. A thermostat is defined as a wall mounted temperature sensor designed for occupantuse, controlling a VAV box, heat-pump, fan-coil unit, or other unitary spacetemperature controller.

1.2 USER INTERFACE

A. Keypad access and a display screen shall be provided on all devices available withsuch.

B. A Laptop PC access port must be a permanent part of all DDC control systems and/ordevices available with such.

1.3 THERMOSTATS

A. All thermostats shall be equipped with an override pushbutton. The controllerconnected to the thermostat must have a 2-hour override capability.

B. All thermostats shall be equipped with a space temperature display.

C. All thermostats shall be equipped with a space temperature setpoint adjustment. Thedevice being controlled shall have the ability to use the setpoint from the thermostat,or a remote setpoint from the BAS.

1.1 SENSORS

A. Current sensors on the motor leads shall be used to confirm fan and pump status.

PART 2 - LONWORKS

2.1 DEVICES

A. All LonWorks devices must be LonMark compliant. Documentation substantiatingthis fact must be submitted for approval.

2.2 CONTROL PROFILES

A. All VAV and FPVAV terminal units must be equipped with DDC controllers thatcomply with the LonMark VAV Controller profile.

15970 CONTROL SYSTEMS EQUIPMENT

10/16/00 215

B. All fan coil units must be equipped with DDC controllers that comply with theLonMark Fan Coil Unit Controller profile.

C. All heat pumps must be equipped with DDC controllers that comply with theLonMark Heat Pump Controller profile.

D. All variable speed motor drives must be equipped with DDC controllers that complywith the LonMark Variable Speed Motor Drive profile.

216

SECTION 15980 - INSTRUMENTATION

PART 1 - GENERAL

1.2 THERMOMETERS

A. A thermometer shall be installed adjacent to any control sensor installed in a fluidpipe.

B. Thermometer ranges shall be scaled so that normal operating temperatures are in themiddle of the thermometer’s range, and so that minimum and maximum operatingtemperatures are not outside of the thermometer’s range.

1.3 GAUGES

A. A pressure gauge shall be install adjacent to any pressure control sensor.

B. A pressure gauge shall be install on the output of all electronic/pneumatictransducers.

C. Gauge ranges shall be scaled so that normal operating pressures are in the middle ofthe gauge’s range, and so that minimum and maximum operating pressures are notoutside of the gauge’s range.

1.4 SENSORS

A. A supply temperature sensor shall be installed down stream of the reheat coil on anyDDC VAV box with reheat.

217

SECTION 15985 - SEQUENCE OF OPERATION

PART 1 - EXECUTION

1.1 CHILLER CONTROL SEQUENCES

A. If the outside temperature is above 55 degrees, and at least one AHU supplied by achiller plant is running, the chiller system shall be enabled. If any one of these is nottrue the chiller system shall be disabled.

B. If there is a diagnostic error in any of the sensors that effect control of a chiller plant(in other words, the loss of this sensor would be harmful to chiller operations), thechiller system will shut down.

C. Once the control system senses that a chilled water primary pump is running, thechilled water secondary pumps shall start. In addition, if there are multiple chilledwater zones, at least one AHU fed by any given zone pump must be running beforethat zone pump is allowed to run. If there are parallel pumps, the lead pump shallstart. The control system will control the speed of the frequency drive secondarypump(s) to maintain a chilled water differential pressure on the system. If thepressure can not be maintained with one pump, a second pump shall start (ifapplicable), and then a third pump if necessary, etc.

D. Once the control system senses that a condenser water pump is running, the controlsystem will modulate the cooling tower valve and cooling tower fans (VFD) insequence to maintain the condenser water supply temperature at set point. Thecooling tower valve shall fail open to the cooling tower, and closed to the bypass.

2.1 AIR HANDLING UNIT (AHU) CONTROL SEQUENCES

A. Air Handling Unit Control - All Air Handlers:

1. When the supply fan is off, the outside air dampers, chilled water valve andheating valves shall all be closed, unless the outside air temperature is below35 degrees, in which case the heating valve(s) shall be open.

2. If an AHU has a chilled water coil, and the chiller status (the chiller that suppliesthat particular AHU) is off for more than three hours, the outside dampers shallnot go to minimum position, and instead shall open to provide “cooling”.

3. If there is a diagnostic error in any of the sensors that affect control of an airhandler, the supply fan (and return fan if applicable) will shut down.

15985 SEQUENCE OF OPERATION

10/16/00218

4. A loss of main control air pressure (if the AHU has any pneumatically controlled,normally open heat) will shut the AHU down.

B. Air Handling Unit Control - Single Discharge Units:

5. An air handling unit with a heating coil, mixed air dampers, and cooling coil, (orany combination) shall modulate them in sequence such that the heating coil andcooling coil never open together unless it is for a dehumidification sequence. Themixing dampers shall modulate in sequence between the heating and cooling coilsso that on a call for mechanical heat, the outside dampers shall be at minimumposition. At outside temperatures below 60 degrees, and on a call for cooling, theoutside dampers shall modulate 100% open before the mechanical coolingmodulates open (chilled water), or is sequenced on (DX). At outside temperaturesabove 60 degrees the outside dampers shall be at minimum position.

C. Variable Speed Air Handlers for Variable Volume Systems:

1. Air handler shall start if there is airflow demand from any one VAV box suppliedby that air handler.

3.1 TERMINAL UNITS’ CONTROL SEQUENCES

A. Variable Volume Box Control:

1. In the unoccupied mode, the damper and reheat valve (if applicable) will beclosed, and the airflow set point shall be 0 CFM. In the occupied mode, theairflow set point will change between the minimum and maximum points tocontrol space temperature at set point. The VAV box damper shall modulate tomaintain airflow at set point. On boxes with reheat or radiant heat, once air flowis at minimum and there is further demand for heat, the reheat valve (or radiantvalve) will open to maintain the temperature at set point.

2. An override push button shall be located on the thermostat, and shall provide atwo hour occupied override when the building schedule is in the unoccupiedmode. If an occupancy sensor controls the VAV box, the override push buttonshall be disabled.

3. Occupancy schedules shall enable the VAV box controller, not the air handler.See section 2.1-C-1 for air handler start sequence.

4.1 MISCELLANEOUS CONTROL SEQUENCES

A. “No-Freeze” Program: If the outside temperature is below 32 degrees and anyparticular air handler (that has a chilled water coil) has a mixed air temperature below40 degrees, the chilled water pumps that feed that AHU will start and thechilled water valve on the affected air handler will open to move water through thechilled water coil to prevent freezing.

15985 SEQUENCE OF OPERATION

10/16/00 219

B. Parallel Pumps: If the lead pump fails, the lag pump should start in its place. Thelead-lag alternates every Monday at 7:00 AM.

C. Alarms: All fans and pumps which have both digital input and digital output points shall be alarmed. The alarm shall be generated whenever the input and outputvalues do not match. The time delay on these alarms shall be 20 minutes

unless there is reason for a shorter delay.

D. Optimal Start/Stop: Optimal start/stop schedules shall be divided into groupsdetermined by room use, so that separate holiday schedules can run for each group.The three groups currently recognized are offices, classrooms, and libraries.

220

SECTION 15986 – MECHANICAL COMMISSIONING

PART 1 - EXECUTION

1.1 CONTROL SEQUENCES

A. The controls contractor shall demonstrate to a WMU representative that all controlpoints, sequences, and functions operate properly and as specified.

B. As-Built or commissioning drawings shall be provided to WMU prior to thecommissioning process for the purpose of commissioning.

C. Software listed in section 15900, part 1, 1.3 A, shall be provided to WMU prior tocommissioning.

221

SECTION 15990 – TESTING, ADJUSTING, AND BALANCING

PART 1 GENERAL

DESIGN GUIDELINES

1. Balancing contractor shall be an independent, certified member of Associated Air Balancing Council(AABC) or National Environmental Balancing Bureau (NEBB) approval by

2. Balances may be contracted independently from Mechanical Contractor on larger projects

3. Balancer responsibilities include identifying and documenting construction deficiencies that wouldpreclude meeting design conditions and coordinating with appropriate trades to correct deficiencies.This includes hydronic system, air systems, mechanical equipment, temperature control systems,electrical pneumatic and steam supply systems.

4. Fully restore any openings created during testing, balancing, and adjusting.

5. Test and Balance Report: Provide 3 complete, bound copies reviewed and approved by the designprofessional. Two draft copies may be requested for review prior to final copies if complexity ofproject warrants.

a. At a minimum, the report shall include the following:General Data – such as project title, Test and Balance Contractor, General Contractor, date ofreport submission, and certification.

System Review – general discussion of systems, any deficiencies or problems encountered.

Schematic Air System Diagrams – include all air terminals and pitot tube traverse locationsindicated in the test reports.

Air Handling Equipment Test Reports – include fan curves showing design and actual points ofoperation. Record manufacturer, model number, serial number; design and manufacturer-rateddata; actual CFM; suction and discharge static pressure of each fan; actual operating current,voltage, and brake horsepower of each fan motor; fan and motor sheave manufacturer, model, size,number of grooves, and center distance; belt size and quantity.

Duct Pitot Tube Traverse Reports – Pitot tube traverse of main supply and return complete withactual temperature and system pressure recorded.

Air Outlet Test Reports – record area served; outlet manufacturer, type, size, and Ak factor;design, preliminary, and final CFM and FPM.

Schematic Hydronic System Diagrams – including all heat exchangers, pumps and locations offlow measuring devices.

Pump Test Reports – include pump curves showing design, actual, and no-flow points ofoperation. Record manufacturer, size, and serial number; design and manufacturer’s rated data;operating suction and discharge pressure and final total dynamic head; no-flow suction anddischarge pressure and corresponding total dynamic head; actual impeller diameter; actualoperating current, voltage, and brake horsepower.

15990 TESTING, ADJUSTING, AND BALANCING

10/16/00222

Primary and Terminal Heat Exchanger Test Reports – record manufacturers and model numbers;design and manufacturer’s rated data; service and location; actual pressure drop and related GMP,CFM; primary and secondary side entering and leaving temperatures.

6. Provide advance notice to University of balancing schedule. The University Building PerformanceGroup may elect to monitor balancing process.


1. Conduct all testing and balancing in accordance with standards of applicable balancing organization.

2. Provide documentation certifying calibration of balancing instruments. Show traceability to NationalBureau of Standards where applicable.

3. Balance to +10/-5% of design values.

mechanical standrad

Documents