eucalyptus montessori elc block 21 section 443 …

EUCALYPTUS MONTESSORI ELC BLOCK 21 SECTION 443 KAMBAH, ACT

SPECIFICATION FOR

MECHANICAL SERVICES REVISION A

ARCHITECT: COLLARD CLARKE JACKSON Unit 6/29 Buckland Street Mitchell ACT 2911 Telephone: (02) 6247 2077 Email: [email protected] MECHANICAL SERVICES CONSULTANT: RUSDEN CONSULTING ENGINEERS Unit 4, 27 Yallourn Street Fyshwick ACT 2609 Telephone: (02) 6108 4560 Email: [email protected]

Rusden Consulting Engineers of 39 ACN 109 491 581 ACN 109 491 581 Eucalyptus Montessori ELC – Mechanical Services Specification, Issue B, 17 June 2016 Data:Office:5863 - Montessori ELC:SPEC:5863 Mechanical Services Specification, Issue B.doc

1. GENERAL ........................................................................................................ 6

1.1 Scope ............................................................................................................................ 6

1.2 Standards .................................................................................................................... 7

1.3 Building Work Associated with Mechanical Services ............................................. 7

1.4 Roof Construction ...................................................................................................... 8

1.5 Shop Drawings ............................................................................................................ 8

Schedule of Drawings .......................................................................................................... 9

1.6 Maintenance after Practical Completion ................................................................. 9

1.7 As-installed Drawings and Maintenance Manuals .................................................. 9

1.8 Building Penetrations ............................................................................................... 10

1.9 Works by other Trades ........................................................................................... 11

1.10 Safety in Construction .......................................................................................... 11

2. ADMINISTRATION BLOCK AIR CONDITIONING AND SUPPLY VENTILATION ...................................................................................................... 12

2.1 Scope .......................................................................................................................... 12

2.2 Description ................................................................................................................ 12

2.3 Filters ......................................................................................................................... 12

2.4 Registers and Diffusers ............................................................................................ 12

2.5 Supply Air Diffusers ................................................................................................. 13

2.6 Return Air Grilles .................................................................................................... 13

2.7 Multi Blade Dampers ............................................................................................... 13

2.8 Condensing Unit Support ........................................................................................ 13

2.9 Ceiling Concealed Evaporator Unit Supports ....................................................... 13

2.10 Air Conditioning (Units Air cooled Type) ............................................................ 14

3. DUCTWORK AND INSULATION ................................................................... 16


3.1 Kitchen Exhaust Ductwork .................................................................................... 16

3.2 Insulation .................................................................................................................. 17

4. PIPEWORK .................................................................................................... 18

4.1 Vibration Isolation ................................................................................................... 18

4.2 Shop Drawings .......................................................................................................... 19

4.3 Pipe Supports ............................................................................................................ 19

4.4 Pipe Testing .............................................................................................................. 20

4.5 Condensate Drains ................................................................................................... 20

4.6 Insulation .................................................................................................................. 20

4.7 AS1677 Compliance ................................................................................................ 21

5. EXHAUST VENTILATION .............................................................................. 22

5.1 Scope .......................................................................................................................... 22

5.2 Description ................................................................................................................ 22

5.3 Exhaust Fans ............................................................................................................. 22

5.4 Registers and Grilles ................................................................................................ 23

6. KITCHEN MAKE-UP AND EXHAUST VENTILATION .................................. 24

6.1 Scope .......................................................................................................................... 24

6.2 Description ................................................................................................................ 24

6.3 Fans ............................................................................................................................ 24

6.4 Kitchen Exhaust Hood ............................................................................................. 25

7. IN-SLAB HYDRONIC HEATING .................................................................... 26

7.1 Scope .......................................................................................................................... 26

7.2 Description ................................................................................................................ 26

7.3 Boilers ....................................................................................................................... 26

7.4 Gas Burner ................................................................................................................ 27

7.5 Circulating Pump ..................................................................................................... 27


7.6 Natural Gas Piping ................................................................................................... 27

7.7 Expansion Vessel ...................................................................................................... 28

7.8 Safety Valve .............................................................................................................. 28

7.9 Flue .......................................................................................................................... 28

7.10 Piping and Insulation ............................................................................................. 28

7.11 Air Bleeds ................................................................................................................ 28

7.12 In-slab Pipework .................................................................................................... 28

7.13 Cold Water Connection ......................................................................................... 29

7.14 Chemical Dosing ..................................................................................................... 29

8. PAINTING AND LABELLING ........................................................................ 30

8.1 Painting ..................................................................................................................... 30

8.2 Labelling .................................................................................................................... 31

9. AUTOMATIC CONTROLS ............................................................................. 32

9.1 Scope .......................................................................................................................... 32

9.2 General ...................................................................................................................... 32

9.3 Description of Operation and Requirements of Control Systems ..................... 32

9.3.1 Ground Floor Slab Hydronic Heating ................................................................. 32

9.3.2 Administration Offices A/C Systems ................................................................... 33

9.3.3 NIDO Sleep Room A/C System ............................................................................ 33

9.3.4 Exhaust Ventilation Systems ................................................................................ 33

10. ELECTRICAL INSTALLATION .................................................................... 34

10.1 Scope ........................................................................................................................ 34

10.2 Description .............................................................................................................. 34

10.3 Schedule of equipment served ............................................................................... 34

10.4 Submains ................................................................................................................. 34

10.5 Mechanical Switchboard ...................................................................................... 35


10.6 Equipment List ....................................................................................................... 35

10.7 Installation of Subcircuit Wiring .......................................................................... 36

10.8 Electrical Wiring .................................................................................................... 36

11. COMMISSIONING ........................................................................................ 37

11.1 Scope ........................................................................................................................ 37

11.2 Description .............................................................................................................. 37

11.3 Piping ....................................................................................................................... 37

11.4 Pipe Cleaning .......................................................................................................... 37

11.5 Ductwork ................................................................................................................. 37

11.6 Air Flow Rates ........................................................................................................ 37

11.7 Electrical ................................................................................................................. 38

11.8 Recordings ............................................................................................................... 38

11.9 Instruction of Operators ........................................................................................ 38

11.10 Commissioning ..................................................................................................... 38


1. GENERAL

1.1 Scope

This section of the specification is intended to provide for the supply, delivery, installation, testing, commissioning and fifty-two weeks maintenance of the Mechanical Services associated with the air conditioning, heating and ventilation of the building. The Mechanical Services shall specifically comprise:-

• Supply and install administration block reverse cycle ducted split systems where shown on the drawings including indoor ducted units, insulated ductwork and filter plenums, grilles, outdoor intake roof cowls, external condensing unit, refrigerant and condensate pipework, pipework insulation, electrical and controls.

• Supply and install reverse cycle high wall split A/C unit to the NIDO Sleep Room including indoor unit, external condensing unit, refrigerant and condensate pipework, pipework insulation, electrical and controls.

• Supply and install in-slab hydronic heating system to areas where shown on the drawings including pex pipework, manifolds, in-slab insulation within main structural slab, gas fired boilers with integral or external pumps, insulated distribution pipework, in-slab temperature sensors and controls.

• Supply and install a kitchen ventilation system as shown on the drawings and scheduled in this specification, including exhaust hood with internal capture jet fans, 1.2mm kitchen exhaust ductwork, makeup supply ductwork, exhaust and makeup fans, VSDs louvre and filter.

• Supply and install various exhaust ventilation systems as shown on the drawings and scheduled in this specification including nappy change and toilets, showers and laundry ventilation.

• Supply and install electrical services associated with mechanical services and including mechanical services switchboard MSSB-1, and final subcircuit wiring. Electrical contractor to supply and install submains to mechanical switchboard.

• Electrical and automatic controls

• Painting and labelling

• Liaise with other services trades to co-ordinate works including fire contractor to co-ordinate FIP, hydraulics trade to co-ordinate tundish locations, gas and water supply, and electrical contractor to co-ordinate sub mains.

• Carry out all testing, commissioning and balancing

• Carry out all maintenance and provide defects liability for 52 weeks

• Provide maintenance manuals and as constructed drawings


1.2 Standards

The following Australian Standards, Authority and legislative requirements (all (except for the BCA) as most recently amended at the time of tender and irrespective of any dates nominated) shall define minimum construction standards for this contract: All relevant Australian Standards including all most recent amendments:-

AS1345 Identification of the contents of pipes, conduits and ducts AS1530 Methods for fire tests on building materials, components and structures AS1668 The use of mechanical ventilation and air conditioning in buildings Part 1: Fire and smoke control Part 2: Mechanical ventilation in buildings AS1677 Refrigerating systems, parts 1 and 2 AS2107 Acoustics – Recommended design sound levels and reverberation times for building

interiors AS3000 SAA Wiring Rules AS3666 Air handling and water systems for buildings - Microbial control AS4041 Pressure piping AS4254 Ductwork for air handling systems in buildings AS4426 Thermal insulation of pipework, ductwork and equipment – Selection, installation

and finish AS/NZS5601.1 Gas installations All relevant authority requirements, federal legislation and territory legislation as most recently amended and including: Requirements of ACTPLA The Service and Installation Rules of ACTEWAGL ACT Fire Brigade Requirements Building Code of Australia 2015 and the ACT Appendix Occupational Health & Safety legislation Lifts and Scaffolds Act Worksafe Australia requirements. Project Fire Services specification. Project Acoustic Report. Rusden Consulting Engineers Safe Design Policy The Contractor shall allow to execute all work according to the above Standards, Codes and Inspecting Authorities and to pay all fees and lodge all forms required by the Inspecting Authorities. 1.3 Building Work Associated with Mechanical Services

The Mechanical contractor shall carry out the following building work associated with the Mechanical Services to suit the construction programme and including but not limited to the following: • Provide galvanised steel plinth frames for all outdoor condensing units and floor mounted

equipment (concrete by builder)


• Provide any supplementary trimming and fix grilles in ceilings and walls (Builder to make and trim penetrations in ceilings, eaves, walls and doors for diffusers and grilles and access panels)

• Provide ceiling access panels for access to mechanical equipment, balancing dampers, kitchen

exhaust duct cleanout panels, damper motors etc. Overflashing of roof penetrations (penetrations and underflashing by builder) 1.4 Roof Construction

All roof / celling construction within the building will be constructed of Ritek panels which has limited access for cables. Ritek consists of sandwich panels connected by steel spines down the length of the rooms with 30mm gaps for services at right angles to the spines. Cable runs must run within the steel spines to reach the service gaps. All subcircuit wiring is required to be concealed. Structural steel supports for hanging indoor ducted units within the admin building will need to be spanned from steel spines and steel beams which are shown on structural drawings. 1.5 Shop Drawings

General: All drawings shall be prepared in accordance with the requirements of the relevant AS Codes and good engineering practice. The accuracy of all information shown shall be the responsibility of the Contractor. Drawings to be Submitted: The Contractor shall submit the drawings listed below before commencing work or ordering equipment for the contract. a) Mechanical: i) Dimensioned layout drawings of all piping, ductwork and equipment. ii) Details of all control systems. iii) Standard manufacturers’ drawings of all packaged equipment b) Electrical:

i) Wiring diagram. All wires and terminals shall be numbered, and numbers shall be shown on the

submitted drawings. For further details also see "Electrical" section of this specification. Delays brought about by late submission of drawings or non-acceptance of unsatisfactory drawings will not be accepted as a reason for an extension of the contract completion time.


Schedule of Drawings

The following drawings shall form part of the contract:- Drg. No. Title W5863-M1 LEGEND, NOTES AND HYDRONIC IN-SLAB HEATING - DETAILS

AND SCHEMATICS W5863-M2 HYDRONIC IN-SLAB HEATING – FLOOR PLAN W5863-M3 AIR CONDITIONING AND VENTILATION PLAN 1.6 Maintenance after Practical Completion

During the whole of the fifty-two weeks Defects Liability Period it shall be understood that the Client's sole duty shall be limited to switching the system on or off as required, operating it in accordance with the instructions provided, and reporting any observed abnormalities in the operation of the system. The Contractor shall be responsible for a full fifty-two (52) weeks routine and breakdown maintenance from the date of Practical Completion until final handover. The Contractor shall allow for four (4) site visits at three monthly intervals to perform routine maintenance in addition to any breakdown maintenance visits. The Contractor shall notify the Superintendent at least 24 hours before each monthly site visit and arrange for the Superintendent to inspect each month's work. The Contractor shall send a written copy of each month's maintenance items to the Superintendent for his records, together with a record of the site visit signed and dated by the Building Users. Routine maintenance work shall generally follow that set down in the manual, including bearing lubrication, vee belt tensioning, filter cleaning, strainer cleaning and adjustment of controls. RECORDS: At the end of the defects liability period, provide copies of all maintenance and breakdown reports in a form suitable for inclusion in the maintenance manuals. 1.7 As-installed Drawings and Maintenance Manuals

Two (2) sets of drawings, in electronic form (AutoCAD DWG or DXF) and hard copy, of the equipment as installed shall be provided no later than 28 days after practical completion, and shall include layout drawings showing actual Mechanical Services positions and all other items and quantities relevant to the system. All drawings shall be prepared in AutoCAD format by competent and experienced draughtsmen. Two (2) sets of operating and maintenance instructions shall be issued no later than 28 days after practical completion of the contract. These shall include - Index - Description of Systems - Instructions for Operating Plant

Rusden Consulting Engineers of 39 ACN 109 491 581 Eucalyptus Montessori ELC – Mechanical Services Specification, Issue B, 17 June 2016 Data:Office:5863 - Montessori ELC:SPEC:5863 Mechanical Services Specification, Issue B.doc

- Name, address and phone number and contact person of all subcontractors used on the project - Details of recommended maintenance including schedules for periodic maintenance - Full details of all connected equipment: - ie Name of supplier - Address of supplier - Details of all equipment for replacement ordering - A description of the works carried out - As-constructed drawings of the whole installation - Copy of all the certificates received from the Authorities - Copy of all manufacturers warranties. - Manufacturers' Maintenance Instructions Where convenient, the copies of the as installed drawings shall be neatly folded and firmly bound with these operating and maintenance instructions. This specification shall be read in conjunction with the mechanical services drawings and all other project documentation including the fire services and acoustic services. 1.8 Building Penetrations

The locations of all penetrations through the building structure shall:- - be submitted for approval prior to their installation. - be arranged by the Contractor in consultation with the Builder. All penetrations shall:- - be sized and located by the Contractor. - be sealed with an approved fireproof packing after installation of sealed pipes or conduits through

fire rated barriers so that the integrity of the fire rating is maintained. Sealing to be in accordance with the requirements of all relevant authorities. All fire rated systems shall comply with Section C of the B.C.A. and shall be tested in accordance with AS1530 Part 4. Provide certification of all fire rated treatments prior to Practical Completion.

- have sleeves, Blockouts, etc., provided by the Contractor where necessary. - be drilled or cut out by the Contractor where they have not been provided during construction of

the wall, floor, etc. Sleeves shall:- - be formed from not less than 1.2mm galvanised sheet steel. - be trimmed flush with the surrounding concrete. - where set into "wet" floors such as ceramic tiled or rendered floors suitable for washing or hosing

down, be of 1.6mm gauge copper tubing and shall project 100mm above the finished floor level.


The Contractor shall supply and fit escutcheons on all pipe penetrations exposed to view. 1.9 Works by other Trades

The following work shall be carried out by other trades as part of the project but external to this contract: Building Work:

- Install concrete plinths under new condensing units (galvanised steel plinth frames to be supplied by mechanical contractor)

- Make and trim penetrations in ceilings, eaves, walls and doors for diffusers and grilles. Mechanical contractor to provide any supplementary trimming and fix grilles

- Penetrations and upturns in roof for exhaust air discharges and outdoor air inlets. Mechanical contractor to overflash roof penetrations

- Penetrations of walls, roof, floors, eaves, ceilings, joinery as required to reticulate all refrigerant and condensate pipework. Mechanical contractor to install pipework, fire rate as specified and make good.

- Provide external weatherproof aluminium louvres with birdmesh behind. Hydraulic Services:

- Provide floor wastes and tundishes for condensate wastes for outdoor condensing units and indoor fan coil units.

- Provide 2 kPa gas supply to a termination points in boiler plant areas. Mechanical contractor to connect boilers from termination point within plant enclosures.

Fire Services:

- No Fire shutdown of general air conditioning plant is required and systems can continue to run in the event of a fire. Provide fire signal relay to Mechanical Services Switchboard MSSB-1 to shut down kitchen makeup fan in the event of a fire signal.

Electrical Services:

- Provide sub-mains to mechanical switchboards. 1.10 Safety in Construction

Comply with all OH&S and Work Place Safety legislation including Safe Work Australia and ACT Work Safety Act. Prior to commencement of work prepare and issue a Safe Construction Plan specifically addressing safety issues in the project, and any other issues relevant to construction of the building as may affect the mechanical services coordination and installation. Distribute the Safe Construction Plan to the Client and all parties associated with Construction, prior to commencing work. Incorporate constructive feedback into the Safe Construction Plan and reissue prior to commencing work. Allow to amend the Safe Construction Plan during construction to address any issues that arise during construction.


2. ADMINISTRATION BLOCK AIR CONDITIONING AND SUPPLY VENTILATION

2.1 Scope

This section of the Specification is intended to provide for the various supply ventilation and air conditioning systems serving the Building. 2.2 Description

Two (2) reverse cycle ducted split system air conditioning systems shall serve the majority of the Administration Block. One (1) reverse cycle high wall split air conditioning system shall serve the NIDO Sleep Room. Each system shall comprise concealed ducted fan coil or high wall units connected to a dedicated condensing unit via proprietary brand refrigeration pipework systems. Each ducted fan coil unit shall have associated distribution ductwork, diffusers, grilles and mixing plenum with filters. All ducted fan coil units shall have outdoor air supplied to the mixing plenum via wall louvres. Systems shall be arranged to operate under manual or timeclock control to provide heating or cooling as required. Systems shall remain running in the event of fire. 2.3 Filters

Air filters shall be 100mm thick P-pleat as manufactured by Email, sized for a maximum face velocity of 2.5 m/s and arranged in standard sized modules in filter frames sealed to prevent any bypass. At rated capacity average efficiency by AS1324.2 test procedures shall be as follows :

No. 1 Test Dust - 20% Minimum Initial efficiency No. 2 Test Dust - 95% Minimum Average efficiency No. 3 Test Dust - 85% Minimum Average efficiency

Access to mixing plenum filters for removal shall be via hinged access panel held closed by sash fasteners in readily accessible locations. Other high wall or cassette system filters shall be as provided by the equipment manufacturer. 2.4 Registers and Diffusers

Supply and install all registers and air diffusers as shown on the drawings and in accordance with the following details. All steel registers and diffusers shall be finished in enamel, whilst aluminium ones shall be anodised, in colours nominated on site. Return air grilles, wall grills and door grilles shall be finished in enamel in colours nominated on site. Penetrations in walls, ceilings, doors and partitions to mount all grilles and registers will be provided as described in Clause 1.3. The registers shall be suitable for mounting in the relevant construction media. All registers shall be free form rattles. All grilles, registers and diffusers shall be suitable for the ceiling or wall construction to which they are mounted.


2.5 Supply Air Diffusers

Shall be round face swirl type, square face 4 way louvre faced diffuser type or double deflection side blow register type (as shown on drawings) to suit the ceiling type, complete with internally insulated cushion head boxes arranged for side entry of flex duct. a) Supply Air Diffusers - Ceiling mounted type

i) Shall be swirl ceiling mounted round diffusers equal to Krantz RA-N3R-DN500-F-4. Diffusers to be provided with internally insulated cushion head boxes. Provide collar reducers for swirl outlets as required to match the following flows:

air flow up to 100L/S – collar no 4 air flow 101 to 150L/S – collar no 3 air flow 151 to 200L/S – collar no 2 air flow above 200L/S – no collar

b) Supply Air Diffusers – Wall mounted type

i) Shall be double deflection adjustable type equal to Air Grilles SH2 where shown on the drawings

2.6 Return Air Grilles

Shall be eggcrate type (up to 300 x 300) and half chevron type (larger grilles) in neatly fabricated extruded aluminium frames. 2.7 Multi Blade Dampers

Multi blade dampers shall be fitted to each unit’s mixing plenum or ductwork for volume control of outdoor, air and shall comply with the following: Dampers shall be of opposed blade type, motorised as specified elsewhere (see drawings and Automatic Controls section of this Specification). Dampers shall be of rigid construction such that no rattling occurs when the system is operating. Dampers shall be full duct size unless otherwise shown on the drawing. 2.8 Condensing Unit Support

Mount each external condensing unit on neoprene anti-vibration pads arranged as a double layer. 2.9 Ceiling Concealed Evaporator Unit Supports

Each unit shall be supported at each corner by threaded steel rods bolted to the slab over.


Provide rubber in shear anti-vibration mountings at the corners of each unit, sized to suit the equipment operating weight. 2.10 Air Conditioning (Units Air cooled Type)

General System: The heat pump Systems shall be of Mitsubishi or equivalent standard operating on R410 or R32 refrigerant gas. The systems shall be air cooled, split multi-system heat recovery type consisting of one (1) outdoor condensing unit per indoor unit as noted in the equipment schedule contained within this specification. Outdoor unit shall contain a rotary or scroll compressor suitable for (R410) refrigerant. The system operating temperature range shall be: • Cooling: - 5°C DB to 40°C DB • Heating: - 10°C WB to 35°C WB Packaged Outdoor Unit: The unit shall be factory assembled and tested. The cabinet housing shall be weatherproof rust resistant steel construction with an acrylic paint finish. Condenser air will discharge vertically upwards with air inlets positioned front & rear. Installation shall be either stand alone or linked as noted. The outdoor unit shall feature the following: • Modular design for side by side installation or stand alone • The sound level shall not be greater than 62 dB(A) when measured 1 metre from unit and 1.5

metre above ground level Compressor – Inverter: The compressor shall be a high efficiency hermetic scroll or rotary design, suitable for inverter control. Capacity load variations from 16% to 100% shall be achieved by compressor speed changing to match cooling and heating demands. The inverter linear control shall be stepless. EMC Approval: The outdoor, indoor and branch controller units shall be EMC approved to Australian Regulations. Copies of Certificates of Conformity to be supplied on request. Heat Exchange Coils:


The condenser coils shall be constructed from refrigerant quality copper tubing mechanically expanded into aluminium fins. Refrigeration System: The refrigeration circuit shall include accumulators, sub-cool heat exchanger, service access, isolating and solenoid valves. Oil recovery system shall be provided to maintain optimum system performance with long pipe runs. A refrigerant composition sensing circuit shall be included to sense the refrigerant blend, composition and system control. Indoor Unit: The nominated indoor unit(s) shall provide continuous refrigerant control by electronic expansion valve. The supply fan shall be a forward curve direct driven by a single phase induction motor. Multiple speed variations shall be provided. The control address for each indoor unit shall be individual/group control as noted. Remote Control(s) shall be used as noted to provide individual control and be capable of simultaneous operation and control of up to 10 indoor units if required. Controls The Control System structure will use a 16 bit CPU micro computer processor in conjunction with pattern matching control to maintain the required room temperature. Control panels for each split system shall have integral 7 day schedule timer. Self Diagnostic Functions will be incorporated in the outdoor unit and a four column digital display of service information shall be provided. Schedule of Air Conditioning Units:

Indoor Unit No.

Nominal Cooling capacity

in kW

Nominal Heating capacity

in kW

Supply air Qty in L/S

Outdoor air Qty in

L/S

External static

pressure in Pa

Type of unit Mitsubishi indoor FCU model No.

Mitsubishi Condenser model No.

AC-1 13.5 16.0 780 150 150 ducted reverse cycle inverter split

PEA-RP140GAA

PUHZ-RP140YKA2

AC-2 12.5 14.0 600 150 150 ducted reverse cycle inverter split

PEA-RP125GAA

PUHZ-RP125YKA2

AC-3 3.5 4.0 212 0 0 high wall reverse cycle inverter split

MSZ-EF35VEW/B/S

MUZ-EF35VE


3. DUCTWORK AND INSULATION

Supply and install all ductwork generally as shown on the drawings and in accordance with AS4254 and as follows: Duct dimensions shown on the drawings are clear airway dimensions and allowance must be made for internal insulation where applied. Flash all ductwork where it penetrates the external walls. Matching angles and bolts shall be galvanised. Provide flexible brelon connections, 100mm long, at all connections to equipment including fans, air conditioning units, plenums, etc. Encase connections where required to reduce noise transmission. All supply air ductwork in unconditioned ceiling spaces shall be internally insulated with 75 thick R2.0 insulation to comply with BCA 2015 section J requirements where shown hatched on the drawings. Outdoor air and exhaust air shall be uninsulated, except where shown on the drawing. Flash all ductwork where it penetrates the roof or external walls. Matching angles and bolts shall be galvanised. Flexible ductwork shall be acoustic grade of a type that does not permanently deform. Flexible ductwork insulation shall comply with specification J5.2 of BCA 2015. Flexible ductwork of no more than 3m in length shall achieve a min. R-Value of 1.0. Flexible ductwork exceeding 3m in length shall achieve a min. R-Value of 2.0 where located in an unconditioned ceiling space. Suspend all flex duct clear of ceilings at regular intervals. Note that all ductwork and equipment layouts shown on the drawings are diagrammatic to a notional layout. The Contractor shall prepare and submit to the Project Manager, 1:50 workshop drawings of all systems based on site measurements and coordinated with existing equipment prior to any installation or equipment order. 3.1 Kitchen Exhaust Ductwork

All kitchen exhaust ductwork shall be fabricated in accordance with the requirements of AS4254-2002 and AS1668.1-1998, the Food and Hygiene Regulations and other relevant authorities. Horizontal ductwork shall be installed with a rise in the direction of air flow of at least 1 in 200. All ductwork shall be constructed from 1.2mm minimum thickness galvanised sheetmetal. All seams and joints shall be soldered completely airtight and grease tight via solder or approved (seek Permission to Use from the Development Manager) sealant or mastic. The girth joints of vertical risers shall be flanged and bolted or butt welded airtight and grease tight. Duct Access Panels shall be provided with waterproof, fire resistant and grease resistant seals. Access panels shall be provided in horizontal ductwork runs at intervals not more than 3 metres, at each duct junction, at each change of direction and at the bottom of duct riser for cleaning of internal surfaces. Access panels and plenums shall be provided at sprinkler heads locations, as per hydraulic services drawings. A 50mm diameter plugged socket drain point shall be provided at the lowest point of each duct run and at the bottom on each vertical riser.


3.2 Insulation

All ductwork shall be insulated as scheduled below: Schedule of Ductwork Insulation: Duct: Insulation Type: Mixing Plenums Internal, 75 thick to BCA 2015 JV5.2 in

unconditioned space Supply air (rigid) Internal and external, 75 thick to BCA 2015 JV5.2

in unconditioned space Supply air (flexible) Pre-insulated acoustic grade to BCA 2015 JV5.2 Outdoor air Internal, 38 thick unless shown otherwise on

drawings Exhaust air Nil except adjacent to fans where it shall be

internal 50 thick where shown hatched Internal insulation of square or rectangular ductwork shall comprise a 50mm or 75mm thickness of fibreglass covered with black scrim equal to Bradfords R4 Ductliner as follows: The insulation shall be held in place using pins either spot welded or adhered to the walls of the duct with an approved adhesive at not greater than 300mm centres. Locking press on type washers shall be pushed over the pins after installation of the insulation to hold firmly in place. Folded PGI sheet angle and Z sections shall be used to hold the insulation at all circumferential joints. The extent of internal insulation is denoted on the drawings by cross hatching.


4. PIPEWORK

Supply and install all pipework where and as shown on the drawings. Pipework shall run in true line with the building and shall be arranged so that the pipes can expand and contract without imposing any undue stress on the pipework, its suspension system or the building. Expansion devices shall be installed where necessary, including anchors and guides to ensure the proper operation of the expansion device. All pipework must be installed to an acceptable standard of workmanship otherwise it will be rejected. Horizontal pipes shall generally be run on a slight grade with condensate lines at a minimum grade of 1:60 unless pumped. Pipe sizes nominated shall be nominal bore sizes. All pipework shall conform to the relevant Australian Standard Codes or Statutory Authorities requirements. Pipes shall be thoroughly cleaned of dirt and scale before erection and open ends shall be kept closed. Sleeves shall be provided where pipes pass through walls and these shall be built into the structure. Escutcheon plates shall be provided to cover these penetrations, after the specified certified fire rating has been implemented for each penetration. All pipework shall be as scheduled below. Cold Water: Copper tube to AS1432 Type B. Drains and Vents: Hard drawn copper tube to AS1432 Type B. Refrigeration: Hard drawn copper tube to AS1571. 4.1 Vibration Isolation

Where shown on the drawing or where pipework has insufficient flexibility to prevent transmission of vibration through it to the building structure, or where the movement imposes undue stress on the pipe, then flexible pipe connections shall be installed. Flexible connections shall be mounted so that movement is made transversely rather than longitudinally. Flexible connections shall be John Phillips Industries Pty Ltd, Flexmetallic connectors or equal and shall be installed in rigid accordance with the manufacturer’s recommendations.


The flexible connector shall be compatible with the fluid passing through the pipe and the environment in which it is installed. Screwed connections may be used for pipes up to 32NB. Flanged connections shall be used for 40NB and above. 4.2 Shop Drawings

Shop drawings shall be submitted to the project manager for his perusal showing full details of the piping arrangement, pipe sizes, pipe supports, connection to equipment and valves, etc, to show how the piping will be installed prior to commencing work on site. 4.3 Pipe Supports

Piping shall be supported by clips, rollers or hangers at intervals not exceeding those given in the table. Pipe Nominal

Size mm Intervals for Steel Pipe Intervals for Copper Pipe

Min. Rod Dia. mm Horizontal

Runs m Vertical Runs

m Horizontal

Runs m Vertical Runs

m 15 2 2.5 1.5 2 10 20 2.5 3 2 2.5 10 25 2.5 3 2 2.5 10 32 3 3 2.5 3 10 40 3 4 2.5 3 10 50 3 4 3 4 10 65 3 5 3 4 10 80 4 5 3 4 12

100 4 5 3 4 14 125 4 5 4 4 14 150 4.5 5 4 4 20 200 5 5.5 5 See Details 20 250 5.5 See Details 5.5 See Details 300 6 See Details 6 See Details

Over 300 See Details Supports shall permit appropriate movement for expansion and contraction in the desired direction and prevent transmission of vibration. The amount of thermal movement shall be suitably proportioned throughout the whole of any pipeline by the provision of anchors. Branches shall be supported so that they are free to move and so that undue strain is not thrown on the necks of valves or other fittings.


Supports shall be arranged so that stresses or loads do not exceed the load allowed on the equipment by the manufacturer and do not damage the building structure or the pipes themselves. Pipe supports may be of proprietary brand and where used shall be in accordance with the manufacturers requirements. Supports shall be grouped where pipes run in parallel. Where dissimilar metals come into contact they shall be isolated electrically from each other. Fastening to the structure shall be in a manner approved by the Principal Authorised Person (PAP). Wooden plugs and explosive powered fasteners are NOT approved. Provide insulated ferrules of compressive strength not less than 650kPa between the pipe and pipe support on insulated pipes. Pipe supports shall incorporate neoprene in shear or helical spring vibration isolators. 4.4 Pipe Testing

All pipework shall be pressure tested during installation and before it is insulated, painted or otherwise covered over. Should sections of pipework be concealed or need covering during construction then the sections shall be pressure tested beforehand. The test pressure shall generally be 700kPa (refer special notes for VRF pipework), however in no case shall it exceed the maximum working pressure of any item of equipment whilst connected to it. 4.5 Condensate Drains

Supply and install from each of the indoor fan coil units a 25 dia. copper trapped condensate drain on a minimum grade of 1:60 back to ActewAGL approved core area tundishes, tundishes supplied and installed by hydraulics trade. Chrome plate pipework where exposed to view, except in Cleaners rooms. Where there are wall mounted indoor units or where other services or the structure prohibit running drains on grade, supply and install condensate pumps arranged to run whenever units are on cooling cycle. Provide a safe tray under each ceiling space mounted fan / coil unit. Supply and install from each outdoor condensing unit a 25mm dia copper condensate drain to authority approved external drainage point supplied and installed by hydraulics trade. 4.6 Insulation

Refrigeration (within building) – shall be flexible closed cell type of chemically blown PVC nitrile rubber sponge material with minimum thickness of 25mm. Insulation is to comply with requirements of BCA 2015, specification J5.4. Refrigeration (external) – as above but with metal sheathing. Insulation of heating water pipework shall have a thermal conductivity not greater than 0.035W/M°K at 50°C mean temperature.


Insulation shall be preformed with factory applied reinforced aluminium foil facing, held in place with ties at 300 centres. Where exposed to view in the Basement Plant Room, apply galvanised steel sheathing. Refrigerant piping insulation thickness shall be Pipe diameter Thickness / R-Value 15 to 40 NS 25 / R1.0 4.7 AS1677 Compliance

Provide a plan indicating how the systems shall comply with AS1677, in particular units located in small rooms, and submit the plan to the project manager for approval prior to commencement of work. Allow to limit all refrigerant volumes, install leak detectors, etc. all as required for code compliance.


5. EXHAUST VENTILATION

5.1 Scope

This section of the specification is intended to provide for the supply and installation of exhaust ventilation systems serving the building. 5.2 Description

It is proposed under this section of the specification to carry out the following work:

• Supply and installation of ducted exhaust ventilation systems serving toilets, garbage rooms, linen rooms, garbage and linen chutes, shower areas, kitchen exhaust and comprising inlet grilles, flexible ductwork, rigid ductwork, door grilles and fans

5.3 Exhaust Fans

The Contractor shall supply and install exhaust fans where and as shown on the drawings. All roof fans shall be fitted with backdraft shutters to comply with BCA 2015 section J requirements. A schedule of exhaust fans is as follows:

Fan No.

Manufacturer / Model No. or

equal Airflow in (L/s)

Estimated Static

Pressure (Pa)

VSD Fan Type / Blade Material

Max. dB(A) @ 3m

Motor Size (kW / Phase / motor type)

RF-1

FANTECH CE224D 120 75 NO

Roof mounted centrifugal downflow

39 0.05 / 1Ø / standard 4 pole

RF-2




RF-3




RF-4




RF-5




RF-6





5.4 Registers and Grilles

The Contractor shall supply and install new registers and grilles where shown on the drawings and as follows: Exhaust registers – flush ceiling mounted type: shall be ceiling mounted grilles suitable for mounting in the installed ceiling material. Registers shall be aluminium of egg crate pattern core located in neatly fabricated aluminium frame and finished in baked enamel to match the ceiling colour. Size shall be 300x300 unless noted otherwise on the drawings. Wall discharge grille To be provided by building trade as scheduled in architectural package. Door grilles Shall be aluminium inverted vee pattern in aluminium frames with concealed fixing of size 600 x 150 unless noted otherwise on the drawing adjacent to the triangular door grille symbol. Colour shall be anodised and as advised on site. Note For further information (sizes and air quantities) refer to the drawings.


6. KITCHEN MAKE-UP AND EXHAUST VENTILATION

6.1 Scope

This section of the specification is intended to provide for the supply and installation of kitchen ventilation systems serving the tenancy. 6.2 Description

It is proposed under this section of the specification to carry out the following work:

• Provide new kitchen exhaust hood and ductwork to suit the new kitchen layout. Kitchen hood KH-1 is to operate as a system with KSF-1 and KEF-1 operating in conjunction with one another. The makeup and exhaust fans shall be interlinked so that the VSDs operate simultaneously from one on/off/speed control for each system.

• Supply and installation of a ducted kitchen make-up supply ventilation system serving the kitchen hood described above and comprising weatherproof inlet louvre, 50mm V-Form filter, rigid ductwork, VSD and make-up fan. The system will provide filtered outdoor make-up air to the designated kitchen hood.

6.3 Fans

The Contractor shall supply and install new kitchen exhaust and make-up fans where and as shown on the drawing. All kitchen fans shall be fitted with variable speed drives to comply with BCA 2015 section J requirements. A schedule of the make-up air fan is as follows: Fan No Kitchen Makeup Fan Make and

Model or equivalent Motor size kW

and Φ VSD Duty in L/S

@ Pa KSF.1 Fantech in-line axial - AP0312JP6/15 0.407 kW, 3ph Yes 580 @ 250

A schedule of the kitchen exhaust fan is as follows: Fan No Kitchen Exhaust Fan Make and

Model or equivalent Motor size kW

and Φ VSD Duty in L/S

@ Pa KEF.1 Fantech Roof mounted centrifugal –

CGD404 0.55 kW, 3ph Yes 740 @ 300


6.4 Kitchen Exhaust Hood

The Contractor shall supply and install a proprietary stainless steel kitchen exhaust hood where and as shown on the drawings. Hood manufacturer to certify that the hood complies with all relevant Building code requirements and AS1668.2-2012. Kitchen hood layout, size, air quantities and pressure drops are to be calculated by the hood manufacturer based on the final kitchen equipment selections and layout. A schedule of exhaust hood based on the kitchen design layout for tendering purposes is as follows:

Hood Make, Model and size Exhaust quantity in l/s @ Pa

Makeup quantity in l/s @ Pa

Stoddart KVF 2400x1250x600 740 @ 100 580 @ 60


7. IN-SLAB HYDRONIC HEATING

7.1 Scope

This section of the specification is intended to provide for gas fired hot water heating equipment, and reticulation to headers and in-slab pex pipework comprising the heating system. 7.2 Description

Provide brackets to fix the boilers to the wall. Provide one gas fired hot water heating boiler, B-1 for the NIDO area and one boiler, B-2 for the CASA / IC Classroom areas from which water at 50°C will be circulated via distribution pipework to serve the in-slab pex pipework located throughout the building where shown. 7.3 Boilers

Supply and install two no. wall mounted boilers conforming with the following requirements and installed in accordance with the manufacturer’s instructions:

a) Rating: The CASA and IC classroom area boiler B-1 shall be a Baxi Luna Duo-tec MP 1.50 external type and have a continuous output rating of not less than 48.6kW when delivering water at 50°C with a return temperature of 30°C. Overall boiler efficiency shall be maintained at not less than 107%. Provide external pump as scheduled below to operate in conjunction with the boiler. The NIDO area boiler B-2 shall be a Baxi Luna3 Platinum 1.12 internal type and have a continuous output rating of not less than 13.1kW when delivering water at 50°C with a return temperature of 30°C. Overall boiler efficiency shall be maintained at not less than 105%.

b) Type: The boilers shall be of modulating condensing type suitable for plant room wallhung installation with a co-axial flue, (internal) stainless steel heat exchanger and suitable for modulating gas firing at a water temperature of 50°C. Boiler B-1 shall be installed in a store room as a room sealed appliance. Boiler B-2 shall be of external type mounted on an external wall where shown and enclosed in a lockable ventilated steel cabinet with external flue.

c) Ancillary Equipment: The boiler shall be supplied complete with the following ancillary equipment - - integral circulating pump - alarm systems - expansion and storage tank - night set back and thermal time delay run on control. - coaxial flue connected to inlet and exhaust points on each boiler.


d) Installation and Assembly: The boiler shall be installed and connected up to services on site strictly in accordance with the manufacturer’s instructions. Upon completion the boiler combustion chamber shall be air tight and entirely free from air leaks.

e) Alternative Boiler:

The Contractor may offer an alternative tender based on boiler equipment of different manufacture. It should be noted that a tender based upon the equipment as specified must be submitted. Alternatives must include complete external insulation and casing of the boiler and for all other accessory items specified above.

7.4 Gas Burner

The gas burner serving the boiler shall be a low NOX, multi stage, fully modulating type. The burner shall burn natural gas quietly and steadily, but in the event of pulsations occurring, will be liable to rejection. Burner shall be to the following requirements:

a) Rating: Boiler B-1 Modulating rating of 176 MJ/hr down to 58 MJ/hr. Boiler B-2 Modulating rating of 62 MJ/hr down to 15 MJ/hr. Ignition: Direct electronic with automatic flame sensing.

7.5 Circulating Pump

Boiler B-1 shall be supplied with one (1) circulating booster pump, which shall operate in conjunction with the internal boiler pump and shall conform to the following:

Pump Make and Model Flow in l/s Resistance in kPa HWP-1 Grundfos UPS 25-80 0.6 50

7.6 Natural Gas Piping

Connect new boilers from the terminated gas point adjacent to boilers (termination point and supply to be provided by hydraulics trade). Provide gas train and run all lines in copper.


7.7 Expansion Vessel

Each boiler shall be supplied complete with one (1) expansion vessel of 18 litre capacity, unless integral expansion tanks are provided with the boiler. The vessel shall be Hurlcon, Pneumetex or equal and shall be connected up in accordance with the manufacturer’s requirements. Maximum pressure in vessels before heating and expansion shall be 100 kPa, however this shall be kept to a minimum by opening the highest air bleed prior to firing the boiler and when the system is cold. 7.8 Safety Valve

The boiler shall be supplied complete with one (1) pressure safety valve, preset to release at 300 kPa. 7.9 Flue

A co-axial boiler flue shall be used with wall discharge cover as recommended by the boiler manufacturer to enable each boiler to be classified as a room sealed appliance. The flue shall be sized to match the connection at the boiler as per the manufacturers requirements, and shall be connected to the combustion inlet and exhaust for each boiler. 7.10 Piping and Insulation

All heating water pipework shall be supplied, installed and insulated in accordance with the pipework section of the specification and as follows. All pipework concealed from view shall be insulated. Pipework within the building exposed to view at header connections and shall be insulated. All exposed pipework shall be in copper, with pipework feeds to the headers run in pex and set into the slab, as there is no ceiling space available. Brass unions shall be used at all header connections, or connection to steel appliances in the plant room. Heating water piping insulation thickness shall be Pipe diameter Thickness / R-Value Less than 40 32 / R1.5 32 to 65 NS 40 / R1.5 7.11 Air Bleeds

Supply and install automatic air bleeds (Braukmann or equal) at all system high points. At commissioning allow to bleed all air from the systems and add extra bleed points as required. 7.12 In-slab Pipework

Use high density polyethylene PE-Xa piping equal to Rehau “pink” with 10 year minimum guarantee. Use insulated, modular headers for in-slab piping connections complete with balancing valves and isolating valves equal to SBK.


7.13 Cold Water Connection

Allow to extend off the cold water pipework installation by other trades and provide a cold water line to the boiler with backflow prevention device and pressure reducing valve. 7.14 Chemical Dosing

Provide chemical dosing facilities at the pump set. Clean pipework initially with Applied Chemicals 533 cleaner and then dose the system to suit application.


8. PAINTING AND LABELLING

8.1 Painting

GENERAL: Paint all ductwork, drains, cold water pipework, refrigerant, heating and chilled water pipework where exposed to view with appropriate prime coat, undercoat and at least two (2) coats of alkyd enamel to AS1345. Equipment and plant exposed to view shall be deemed to include all ductwork and pipework exposed to view inside the building, and platform mounted equipment visible from ground level, including associated pipework, plus all equipment in plant rooms. Surface preparation, priming and undercoats shall be as recommended by the manufacturer for the particular duties. Roof mounted exhaust fans and cowls and ductwork extensions shall be painted as above to colour as nominated by the Project Manager or to match adjacent roof and equipment colours. Paint the inside of ductwork matt black where visible through any grille or diffuser face with the face or core removed. Ductwork exposed externally and within the building, including overflashing, shall be prepared and painted to colour as directed by the Project Manager. Ducts not visible from ground level may be left unpainted but all adjoining angles and supports must comply with the general painting of equipment. REQUIREMENT: Items of equipment provided as part of this contract, e.g. new air grilles, etc, shall be painted off-site in accordance with the requirements herein, or the equipment manufacturer’s standard finish. Where damage occurs to the paintwork of such equipment, the damaged item shall be returned to the respective paint shop where it shall be refinished with primer and final coats to restore the surface to its specified condition of colour, finish and quality. All switchboards, control panels and the like shall be cleaned down and polished with automotive polish prior to practical completion. All exposed sheetmetal plenums, ducts, pipes, valves, wiring ducts, brackets, frames, covers, etc, shall be arranged in an approved pattern and painted with at least two (2) coats of best quality oil paint of approved colours which match the existing building fabric, to the satisfaction of the Project Manager. Galvanised surfaces shall be etch primed before painting. Wherever possible, one (1) coat shall be applied prior to installation in position. At least one (1) coat shall be applied after erection.


8.2 Labelling

IDENTIFICATION: Identification shall be by means of the ‘basic identification colours’ of AS1345, applied to the pipework as painting in bands at intervals to AS1345, clause 6, or as securely attached pipeline markers to AS1345 clause 6 and figs. 1 and 2. LOCATION OF BANDS OR MARKERS: Shall be to AS1345 clause 6.2.


9. AUTOMATIC CONTROLS

9.1 Scope

This section of the Specification is intended to provide for the complete automatic control systems associated with the equipment described elsewhere herein, including the supply, installation, testing and putting into satisfactory service. System to comprise an Innotech or equal DDC system if required to achieve the functionality outlined below, combined with a centralised touch screen control system for airconditioning equipment. 9.2 General

REQUIREMENT: This section of the specification covers the supply and installation of the manual and automatic controls for all systems, plant and equipment specified under other sections of this specification. CONTROLS: Shall be of proven performance and reliability and shall be of the same type and manufacture throughout the project. Unless otherwise approved, all controls shall be supplied, installed, tested and commissioned by the controls manufacturer or supplier. All personnel engaged in this work shall be fully trained and experienced in this field. Responsibility shall be accepted for the design, selection of controls equipment, quality of the equipment and performance of the controls installation. All controls shall be capable of operation within the specified ranges and tolerances. The control system shall be complete in all respects and shall have all items such as valves, motors, thermostats, relays, interlocks and the like as necessary for the safe and correct operation of the plant. Unless otherwise specified, all adjustable controls such as thermostats, humidistats, etc, located in occupied areas, shall be sensors provided with remote adjustment. Where temperatures, set points, time delay periods and other criteria are nominated, the values shall be treated as indicative only. All such settings shall be adjusted for optimum performance at the time of commissioning and noted in the operating instructions and commissioning records. No instruments or control devices shall be located where they will interfere with the operation or removal of equipment, nor shall conduits or piping be run so as to interfere with the access to any equipment. All outdoor controls shall have IP56D rating. 9.3 Description of Operation and Requirements of Control Systems

9.3.1 Ground Floor Slab Hydronic Heating

When the outside temperature is 15°C (adjustable) or less and any slab temperature sensor within each system is below 23°C (adjustable) and the corresponding zone temperature is below 21°C


(adjustable), operate the floor heating water systems. Ensure the pumps are running and flow is established prior to enabling the boilers. When the heating demand disappears, run the circulating pump for a further 15 minutes. Modulate boiler controls to provide 50°C supply water temperature. Provide proportional and integral controls to maintain the slab temperatures at a maximum of 23°C. 9.3.2 Administration Offices A/C Systems

Provide functionality to operate units via 7 day time schedule or manually via wall controllers, complete with integral temperature sensor. 9.3.3 NIDO Sleep Room A/C System

Provide remote controller for unit operation with 7 day schedule timer function. Provide wall bracket for fixing remote to wall. 9.3.4 Exhaust Ventilation Systems

Kitchen Exhaust Fans Provide an on/off switch within each kitchen adjacent to the hood with an easily adjustable VSD control linked to both make-up and kitchen exhaust fans to adjust fan speeds together. The speed control device must be simple and easy to use i.e. dial type to adjust from minimum to maximum.

Toilet and nappy change exhaust fans Wire these fans to the adjacent isolating switch to be provided by electrical trade. Electrical trade will wire fan circuits back to a time clock control to operate during school hours. Fire Mode: In the event of a fire alarm in the building, the air conditioning and toilet exhaust systems can continue to run. The Kitchen Exhaust fan and make-up fan, if running, shall shut down. Alternatively, all systems can shut down on receipt of a fire alarm.


10. ELECTRICAL INSTALLATION

10.1 Scope

This section of the specification is intended to provide for the supply and installation of all electrical equipment and wiring associated with the ventilation plant and its control gear as described in previous sections. 10.2 Description

The extent of work comprising this section is the supply and installation of the following:- a) Liaison with builders electrical contractor who shall run submains to the Mechanical

Switchboards b) Connection of submains to the Mechanical Switchboards. c) Supply and installation of one (1) new Mechanical Services switchboard located where

shown on the drawings.

d) Connection of final subcircuit wiring to various new equipment

e) Wiring to control gear.

10.3 Schedule of equipment served

a) MECHANICAL SERVICES BOARD (MSSB-1):

Equipment Description Rated kW Motor type No. of Phases AC-1 4.83 INVERTER 3 AC-2 4.24 INVERTER 3 AC-3 1.5 INVERTER 1 B-1 0.145 STANDARD 1 B-2 0.075 STANDARD 1 Kitchen Exhaust Fan KEF-1 0.55 VSD 3 Kitchen Makeup Fan KSF-1 0.407 VSD 3 Note: all toilet and nappy change exhaust fan circuits will be wired to the electrical distribution board by the electrical contractor, and terminated with an isolating switch adjacent to each fan. They are not fed from the above board.

10.4 Submains

Submains of adequate capacity shall be run to the Mechanical Switchboard by the Electrical Contractor. Allow to cut, earth and terminate cables at the Mechanical Switchboard.


10.5 Mechanical Switchboard

The Contractor shall supply and install one (1) Mechanical switchboard where shown on the drawings and as scheduled hereunder.

The board shall be sheet steel enclosed front access wall mounted type fitted with enclosing gasketted lockable hinged doors or lift off doors if required for OH&S or AS3000 clearance purposes. Paint in a colour nominated by the superintendent.

Each board shall comprise the functions of distribution, starter and control, and shall be equipped as scheduled elsewhere.

Allow a space for installation of possible future kilowatt hour meter with pulsed output on each switchboard.

Each control panel shall be a separate hinged down panel at the top of the switchboard and shall contain all controls, control switches and indicator lights with a wiring loom to permit opening of the panel when required.

10.6 Equipment List

The following equipment shall be provided:

a) Main Switches as applicable for each switchboard: MSSB-1 1-80A TP non-auto miniature circuit breaker

b) Links: Earth bar Neutral bar

c) Circuit breaker protection for the external condensing unit, group of internal fan coil units for

each condenser, controllers and fans. Provide 25% single pole spaces for future equipment.

d) Starter gear as required for equipment noted in (c). Provide 25% spare sets S.P. spaces.

e) Control switches (K&N Blueline) three position AOM type for equipment noted in (c). Provide

25% spare spaces. f) Pilot indicator lights (K&N J-lite) green to suit equipment noted in 9.3(a) above

Provide 25%spare spaces g) Automatic Controls:

Provide space for mounting any automatic controls required. h) Time Clock:

365 day programmable type with 2 channels and with minimum 36 hour battery reserve.

Users to advise exact times on-off and days of year required. Contractor to issue formal request for information at least four (4) weeks before practical completion.


i) 240/24V transformer for control system. j) No Mechanical Services shutdown of airconditioning systems is required and units and

exhaust fans may continue to run, if operating. k) Refer Automatic Controls section for description of operating and fire modes. 10.7 Installation of Subcircuit Wiring

The Contractor shall supply and install all the subcircuit wiring between the switchboard and the items of mechanical plant as scheduled and also the control wiring between the various automatic and manual controls, instruments and devices. The Contractor shall carefully refer to the Automatic Controls Section for details of the various controls to determine their wiring requirements and whether any controls are to be incorporated within the switchboard. The Contractor shall provide such additional electrical equipment on the boards over and above that listed to ensure the proper and satisfactory operation of the particular control installed. 10.8 Electrical Wiring

The Contractor shall prepare and submit to the superintendent for his information a Schematic Wiring Diagram for the whole of the power and control wiring showing all equipment and interconnections. This schematic shall be submitted before any orders are placed or any work done on site. Submitted drawings shall include numbered power and control wires and numbered terminals.


11. COMMISSIONING

11.1 Scope

This section of the specification is intended to provide for the complete testing and putting into service of all equipment as described elsewhere herein, together with instrumentation as required. 11.2 Description

All equipment shall be tested individually to ensure that its capacity is that specified. The Superintendent reserves the right to be present during all such tests and shall be given not less than 14 days notice in writing of the commencement date of these tests. 11.3 Piping

All piping shall be pressure tested in accordance with the relevant standards and codes. All testing shall be completed before any insulation of pipework is commenced. 11.4 Pipe Cleaning

Care shall be taken to prevent entry of foreign matter into piping before, during or after erection. All open ends shall be capped at the completion of each day's work. Before commissioning the installation, all heating water piping shall be thoroughly cleaned by chemical means until all foreign matter is removed. Chemicals used to be equal to Applied Chemicals 533. All strainers shall be removed and cleaned following this operation, and regularly thereafter until all foreign matter is removed. Cleaning shall be carried out in the presence of and to the satisfaction of the Superintendent. 11.5 Ductwork

All supply and exhaust ductwork shall be tested for leaks. Any leaks revealed by testing under normal operating conditions shall be rectified and testing repeated until satisfactory. All testing and rectification work shall be completed before handover of the project. 11.6 Air Flow Rates

The air flow rate from all supply and exhaust systems shall be measured with an approved air velocity measuring instrument. The air flow rate shall be measured from all air inlets with approved techniques and using recently calibrated approved velocity measuring instruments. The air flow rates shall be equal to or not greater than 5% more than those shown on the working drawings. The Contractor shall allow for all work required to balance the air flow rates, and all balancing shall be completed not less than 14 days before the handover date of the contract. While


balancing is being done, the Contractor should ensure that all ventilation systems are turned on. All doors and windows shall be shut throughout the building. The air capacity of each fan shall be not less than that specified. 11.7 Electrical

The current drawn by each motor shall be measured under full load conditions. The operation of the thermal overloads shall be checked to ensure that the calibration is correct by setting the thermal at the above measured current. All fuses shall be carefully checked to ensure that they are of the correct rating for the motor or control circuit. 11.8 Recordings

After all systems have been properly put into service, checked and balanced, the Contractor shall make continuous recordings under summer and winter conditions of the temperatures in the rooms of the building for two (2) periods each of one week. The dates of commencement of tests shall be nominated by the Superintendent, however if this is not done they shall be taken as commencing in the first week of August and the first week of February. Allow for supply or hire and placement of all automatic recording equipment. In addition to the above recordings, the Contractor shall record the results of all other tests described in this section of the specification and shall provide two (2) copies for the Superintendent. All recordings shall be neatly prepared in tabular form or on a schematic drawing. Air flow from exhaust systems shall be recorded on a drawing showing the layout of the systems on each floor. Measured and specified flow rates shall be shown. 11.9 Instruction of Operators

The Contractor shall make available on the job for the instruction of the occupier's operators, a skilled technician for a period of not less than one (1) week after handing over date of the installation. During this period it shall be the Contractor's responsibility to have his skilled technician instruct and advise the occupier's operator in matters of operation maintenance and taking records relating to the mechanical services described elsewhere in this specification. The date of commencement shall be determined by the Superintendent. The Contractor shall prepare simply worded typed operating instructions to be left with the building owners on site, at the time of handover. 11.10 Commissioning

The Contractor shall provide a skilled operator to completely and properly commission all the equipment and controls. All air quantities shall be checked and adjusted to conform with those shown on the plans and as specified. After approximately 200 hours of operation after date of handover, the Contractor shall check all parts of the system, lubricate bearings, check and adjust all controls to ensure satisfactory operation, etc., included as part of the Contractor's continuing fifty-two (52) weeks maintenance responsibilities.


EUCALYPTUS MONTESSORI ELC MECHANICAL SERVICES

TENDER BREAKUP

Exhaust ventilation $............ Reverse cycle air conditioning $............ Hydronic in-slab heating $............ Electrical and Controls $............ Commissioning and certification $............ Maintenance $............ Sub-total: $............ Plus GST $............ TOTAL PRICE $____________ Name of Electrical and Controls Subcontractor: ______________________________________________________________ Name of Hydronic Heating In-Slab Pipework Subcontractor: ______________________________________________________________ Name of Balancing Subcontractor: ______________________________________________________________ Tenderer's Name:_____________________________________ Tenderer's Signature: ________________________________ Date:_______________________________________________

eucalyptus montessori elc block 21 section 443 …

Documents