2016 uniform solar energy & hydronics code technical ...codes.iapmo.org/docs/2016 usehc...

2016 Uniform Solar Energy & Hydronics Code Technical Committee Meeting

IAPMO World Headquarters, Ontario, CA October 26, 2016

AGENDA

I. Call to Order

II. Chairman Comments

III. Announcements

IV. Self Introductions

V. Review and Approval of Agenda

VI. Discussion of Code Change Proposals to the Uniform Solar Energy

& Hydronics Code

VII. Other Business

VIII. Future Meetings

IX. Adjournment

TENTATIVE ORDER OF DISCUSSION

2016 PROPOSED CODE CHANGES TO THE UNIFORM SOLAR ENERGY & HYDRONICS CODE

The following is the tentative order of discussion on which the proposed changes will be discussed at the Technical Committee Meeting. Proposed code changes that are grouped together are those that are both indented and separated by lines. Indented proposed code changes are those being discussed out of numerical order.

Item # 001 Item # 002 Item # 003

Item # 004 Item # 005 Item # 006 Item # 007 Item # 008 Item # 009 Item # 010 Item # 011 Item # 012 Item # 013 Item # 014 Item # 015 Item # 016 Item # 017 Item # 018 Item # 019 Item # 020

Item # 021 Item # 022

Item # 023 Item # 024 Item # 025 Item # 026



Item # 035 Item # 036 Item # 037 Item # 038 Item # 039 Item # 040 Item # 041 Item # 042 Item # 043

Item # 044 Item # 045

Item # 046 Item # 047 Item # 048 Item # 049 Item # 050 Item # 051 Item # 052 Item # 053 Item # 054 Item # 055 Item # 056 Item # 057 Item # 058 Item # 059 Item # 060 Item # 061 Item # 062 Item # 063 Item # 064 Item # 065 Item # 066 Item # 067 Item # 068

Item # 070 Item # 069 Item # 071 Item # 072 Item # 073 Item # 074 Item # 075 Item # 076 Item # 077 Item # 078 Item # 079 Item # 080 Item # 081 Item # 082 Item # 083 Item # 084 Item # 085 Item # 086 Item # 087 Item # 088 Item # 089 Item # 090 Item # 091

Item # 092 Item # 093 Item # 097 Item # 098 Item # 099 Item # 100 Item # 094 Item # 095

Item # 096 Item # 101 Item # 102

Item # 103 Item # 104 Item # 105 Item # 106 Item # 107 Item # 108 Item # 109 Item # 110 Item # 111 Item # 112 Item # 113 Item # 114 Item # 115 Item # 116 Item # 117 Item # 118 Item # 119 Item # 120 Item # 121 Item # 122 Item # 123 Item # 124 Item # 125 Item # 126 Item # 127 Item # 128 Item # 129 Item # 130 Item # 131 Item # 132 Item # 133 Item # 134 Item # 135 Item # 136

The standards listed in Table 1001.1 are referenced in various sections of this code and shall be considered part of the requirements of this document. The standards are listed herein by the standard number and effective date, the title, application and the section(s) of this code that reference the standard. The application of the referenced standard(s) shall be as specified in Section 302.1.2. intended for use in the design, testing, and installation of materials, devices, appliances, and equipment regulated by this code. These standards are mandatory where required by sections in this code. The promulgating agency acronyms Organization abbreviations referred to in Table 1001.1 are defined in a list found at the end of the table.

AHRI 870-20052016*

Performance Rating of Direct GeoExchange Heat Pumps

Equipment 707.1

ASCE 25-2006* Earthquake-Actuated Automatic Gas Shutoff Devices

Fuel Gas 302.1.2, 302.2

ASHRAE 34-2013* Designation and Safety Classification of Refrigerants

Refrigerant Classifications

705.2

ASHRAE 90.1-2013*

Energy Standard for Buildings Except Low-Rise Residential Buildings

Energy 302.1.2, 302.2

ASHRAE 93-2010 (RA2014)*

Methods of Testing to Determine the Thermal Performance of Solar Collectors

Testing Useful Tables

ASHRAE 95-1981 (RA1987) *

Methods of Testing to Determine the Thermal Performance of Solar Domestic Water Heating Systems

Testing 302.1.2, 302.2

ASHRAE 96-1980 (RA1989) *

Thermal Performance of Unglazed Flat-Plate Liquid-Type Solar Collectors

Testing, Collector

302.1.2, 302.2

ASME A13.1-2007 (R2013) *

Scheme for the Identification of Piping Systems

Piping 302.1.2, 302.2

ASME A112.18.1-2012/CSA B125.1-2012

Plumbing Supply Fittings Fittings 302.1.2, 302.2

ASME A112.18.2-2011/CSA B125.2-2011

Plumbing Waste Fittings Fittings 302.1.2, 302.2

ASME A112.18.6-2009/CSA B125.6-2009 (R2014) *

Flexible Water Connectors Piping 302.1.2, 302.2

ASME B1.20.1-2013*

Pipe Threads, General Purpose (Inch) Joints 409.2(3), 409.3(7), 409.11(3), 409.12(2)

ASME B16.3-2011* Malleable Iron Threaded Fittings: Classes 150 and 300

Fittings Table 408.1

ASME B16.5-2013* Pipe Flanges and Flanged Fittings: NPS 1?2 through NPS 24 Metric/Inch


ASME B16.9-2012* Factory-Made Wrought Buttwelding Fittings


1

ASME B16.11-2011*

Forged Fittings, Socket-Welding and Threaded


ASME B16.12-2009*

Cast Iron Threaded Drainage Fittings Fittings 302.1.2, 302.2

ASME B16.15-2013*

Cast Copper Alloy Threaded Fittings: Classes 125 and 250


ASME B16.18-2012*

Cast Copper Alloy Solder Joint Pressure Fittings


ASME B16.21-2011*

Nonmetallic Flat Gaskets for Pipe Flanges

Joints 302.1.2, 302.2

ASME B16.22-2013*

Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings

Fittings 703.6, Table 408.1

ASME B16.23-2011*

Cast Copper Alloy Solder Joint Drainage Fittings: DWV


ASME B16.24-2011*

Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500


ASME B16.26-2013*

Cast Copper Alloy Fittings for Flared Copper Tubes


ASME B16.29-2012*

Wrought Copper and Wrought Copper Alloy Solder-Joint Drainage Fittings - DWV


ASME B16.33-2012*

Manually Operated Metallic Gas Valves for Use in Gas Piping Systems Up to 175 psi (Sizes NPS 1?2 - NPS 2)

Valves 302.1.2, 302.2

ASME B16.34-2013*

Valves - Flanged, Threaded, and Welding End

Valves 302.1.2, 302.2

ASME B16.47-2011*

Large Diameter Steel Flanges: NPS 26 Through NPS 60 Metric/Inch

Fittings 302.1.2, 302.2

ASME B16.51-2013*

Copper and Copper Alloy Press-Connect Pressure Fittings


ASME BPVC Section IV-2013*

Rules for Construction of Heating Boilers

Miscellaneous 302.1.2, 302.2

ASME BPVC Section VIII-20132015*

Rules for Construction of Pressure Vessels Division 1

Miscellaneous 407.1, 601.2.1, 603.6, 605.3

ASME BPVC Section IX-2013*

Welding, Brazing, and Fusing Qualifications

Certification 302.1.2, 302.2

ASME BPVC Section X-20132015*

Fiber-Reinforced Plastic Pressure Vessels

Pressure Vessel Construction, Pressure Vessels

603.6

ASME SA194-20132015*

Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both

Mounting 501.5.6

ASSE 1001-2008* Atmospheric Type Vacuum Breakers Backflow Protection

302.1.2, 302.2

ASSE 1010-2004* Water Hammer Arresters Water Supply Component

302.1.2, 302.2

ASSE 1017-2009* Temperature Actuated Mixing Valves for Hot Water Distribution Systems

Valves 311.5, 406.3.1

ASSE 1018-2001* Trap Seal Primer Valves-Potable Water Supplied

Valves 302.1.2, 302.2

ASSE 1061-20112015*

Push-Fit Fittings Fittings 409.2(1), 409.3(5), Table 408.1

ASSE 1079-2012 Dielectric Pipe Unions Joints Fittings 409.13.1 ASTM A53/A53M-2012

Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

Piping, Ferrous Table 408.1

2

ASTM A74-2013a Cast Iron Soil Pipe and Fittings Piping, Ferrous 302.1.2, 302.2 ASTM A106/A106M-2014 2015

Seamless Carbon Steel Pipe for High-Temperature Service


ASTM A126-2004 (R2014)

Gray Iron Castings for Valves, Flanges, and Pipe Fittings


ASTM A254/A254M-2012

Copper-Brazed Steel Tubing Piping, Ferrous Table 408.1

ASTM A269/A269M-2014e1 2015a

Seamless and Welded Austenitic Stainless Steel Tubing for General Service


ASTM A312/A312M-2014 2016

Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes


ASTM A377-2003 (R2008)e1

Ductile-Iron Pressure Pipe Piping, Ferrous 302.1.2, 302.2

ASTM A420/A420M-2013 2014

Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service


ASTM A518/A518M-1999 (R2012)

Corrosion-Resistant High-Silicon Iron Castings

Piping, Ferrous 302.1.2, 302.2

ASTM A733-2013 Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples


ASTM A861-2004 (R2013)

High-Silicon Iron Pipe and Fittings (Note 1)


ASTM B32-2008 (R2014)

Solder Metal (Note 2) Joints 409.3(6)

ASTM B42-2010 2015a

Seamless Copper Pipe, Standard Sizes Piping, Copper Alloy

Table 408.1

ASTM B43-2014 2015

Seamless Red Brass Pipe, Standard Sizes Piping, Copper Alloy

Table 408.1

ASTM B75/B75M-2011

Seamless Copper Tube Piping, Copper Alloy

Table 408.1

ASTM B88-2009 2014

Seamless Copper Water Tube Piping, Copper Alloy

Table 408.1

ASTM B135-2010 Seamless Brass Tube Piping, Copper Alloy

Table 408.1

ASTM B251-2010 General Requirements for Wrought Seamless Copper and Copper-Alloy Tube

Piping, Copper Alloy

Table 408.1

ASTM B280-2013 2016

Seamless Copper Tube for Air Conditioning and Refrigeration Field Service

Piping, Ferrous 703.6

ASTM B302-2012 Threadless Copper Pipe, Standard Sizes Piping, Copper Alloy

Table 408.1

ASTM B306-2013 Copper Drainage Tube (DWV) Piping, Copper Alloy

302.1.2, 302.2

ASTM B447-2012a Welded Copper Tube Piping, Copper Alloy

Table 408.1

ASTM B584-2014 Copper Alloy Sand Castings for General Applications (Note 3)


302.1.2, 302.2

ASTM B587-2012 Welded Brass Tube Piping, Copper Alloy

302.1.2, 302.2

ASTM B687-1999 (R2011)

Brass, Copper, and Chromium-Plated Pipe Nipples


302.1.2, 302.2

ASTM B813-2010 Liquid and Paste Fluxes for Soldering of Copper and Copper Alloy Tube

Joints 409.3(6)

ASTM B828-2002 (R2010)

Making Capillary Joints by Soldering of Copper and Copper Alloy Tube and Fittings

Joints 409.3(6)

3

ASTM C411-2011 Hot-Surface Performance of High-Temperature Thermal Insulation

Block Board, Cracking, Delamination, Hot-Surface Performance, Pipe Thermal Insulation, Surface Analysis-Building, Temperature Tests-Insulation, Thermal Insulating Materials Duct Coverings and Linings

502.4.1, 804.1.2

ASTM C425-2004 (R2013)

Compression Joints for Vitrified Clay Pipe and Fittings

Joints 302.1.2, 302.2

ASTM C443-2012 Joints for Concrete Pipe and Manholes, Using Rubber Gaskets

Joints 302.1.2, 302.2

ASTM C564- 2014 Rubber Gaskets for Cast Iron Soil Pipe and Fittings

Joints 302.1.2, 302.2

ASTM C700-2013 Vitrified Clay Pipe, Extra Strength, Standard Strength, and Perforated

Piping, Non-Metallic

302.1.2, 302.2

ASTM C1277-2014 Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings

Joints 302.1.2, 302.2

ASTM D56-2005 (R2010)

Flash Point by the Tag Closed Cup Tester

Testing 208.0

ASTM D93-2013e1 Flash Point by Pensky-Martens Closed Cup Tester

Testing 208.0

ASTM D635-2010 Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position

Testing 218.0

ASTM D1527-1999 (R2005)*

Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe, Schedules 40 and 80 (withdrawn)

Piping, Plastic Table 408.1

ASTM D1693-2013 2015

Environmental Stress-Cracking of Ethylene Plastics


ASTM D1785-2012 2015*

Poly (Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120


ASTM D2235-2004 (R2011) *

Solvent Cement for Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe and Fittings

Joints 302.1.2, 302.2

ASTM D2241-2009 2015*

Poly (Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)


ASTM D2464-2013 2015*

Threaded Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 (Note 1)


ASTM D2466-2013 2015*

Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 (Note 1)


ASTM D2467-2013a 2015*

Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 (Note 1)


ASTM D2513-2014*

Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings (Note 1)


ASTM D2564-2012*

Solvent Cements for Poly (Vinyl Chloride) (PVC) Plastic Piping Systems

Joints 409.11(2)

ASTM D2609-2002 (R2008) 2015*

Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe (Note 1)


4

ASTM D2672-1996a (R2009) *

Joints for IPS PVC Pipe Using Solvent Cement

Joints 302.1.2, 302.2

ASTM D2683-2010e3 2014*

Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing

Fittings 703.5.1, Table 408.1

ASTM D2837-2013e1

Obtaining Hydrostatic Design Basis for Thermoplastic Pipe Materials or Pressure Design Basis for Thermoplastic Pipe Products


ASTM D2846/D2846M-2009be1 2014*

Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems

Piping, Plastic 409.2(2), Table 408.1

ASTM D2855-1996 (R2010) *

Making Solvent-Cemented Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings

Joints 302.1.2, 302.2

ASTM D3035-2014 2015*

Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter

Piping, Plastic 703.5.1, Table 408.1

ASTM D3139-1998 (R2011)*

Joints for Plastic Pressure Pipes Using Flexible Elastomeric Seals

Joints 409.11(1)

ASTM D3261-2012e1 2015*

Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing


ASTM D3278-1996 (R2011)

Flash Point of Liquids by Small Scale Closed-Cup Apparatus

Testing 208.0

ASTM D3350-2012e1 2014

Polyethylene Plastics Pipe and Fittings Materials


ASTM E84-2014 2015b *

Surface Burning Characteristics of Building Materials

Miscellaneous 401.2, 502.4, 503.1, 606.5, 802.2, 804.1.2

ASTM E136-2012* Behavior of Materials in a Vertical Tube Furnace at 750°C

Furnace 216.0

ASTM E2231-2014 2015*

Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics

Miscellaneous Insulation of Ducts

804.1.2

ASTM F437-2009 2015*

Threaded Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80


ASTM F438-2009 2015*

Socket-Type Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40


ASTM F439-2013* Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80


ASTM F441/F441M-2013

e12015*

Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80


ASTM F442/F442M-2013e1

Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe, Schedules (SDR-PR)


ASTM F480-2014* Thermoplastic Well Casing Pipe and Couplings Made in Standard Dimension Ratios (SDR), SCH 40 and SCH 80

Piping, Plastic 302.1.2, 302.2

ASTM F493-2010 2014*

Solvent Cements for Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Pipe and Fittings

Joints 409.2(2)

ASTM F628-2012e1*

Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe with a Cellular Core (Note 1)


ASTM F656-2010 2015*

Primers for Use in Solvent Cement Joints of Poly (Vinyl Chloride) (PVC) Plastic Pipe and Fittings

Joints 409.2(2), 409.11(2)

5

ASTM F714-2013* Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter

Piping, Plastic 703.5.1

ASTM F876-2013a 2015a *

Crosslinked Polyethylene (PEX) Tubing Piping, Plastic 409.4, 703.5.2, Table 408.1

ASTM F877-2011a* Crosslinked Polyethylene (PEX) Plastic Hot- and Cold-Water Distribution Systems


ASTM F891-2010* Coextruded Poly(Vinyl Chloride) (PVC) Plastic Pipe with a Cellular Core


ASTM F1055-2013 2015*

Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing

Fittings 703.5.1, 703.5.2, Table 408.1

ASTM F1281-2011*

Crosslinked Polyethylene/ Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Pressure Pipe


ASTM F1282-2010*

Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure Pipe


ASTM F1807-2013a 2015*

Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing


ASTM F1960-2012 2015*

Cold Expansion Fittings with PEX Reinforcing Rings for Use with Cross-linked Polyethylene (PEX) Tubing

Fittings 703.5.2, 703.5.2.1(3), Table 408.1

ASTM F1961-2009*

Metal Mechanical Cold Flare Compression Fittings with Disc Spring for Crosslinked Polyethylene (PEX) Tubing


ASTM F1970-2012e1*

Special Engineered Fittings, Appurtenances or Valves for Use in Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Systems


ASTM F1974-2009 (R2015)*

Metal Insert Fittings for Polyethylene/Aluminum/Polyethylene and Crosslinked Polyethylene/Aluminum/Crosslinked Polyethylene Composite Pressure Pipe

Fittings 409.5(1), 409.8(1), Table 408.1

ASTM F2080-2012*

Cold-Expansion Fittings with Metal Compression-Sleeves for Cross-Linked Polyethylene (PEX) Pipe

Fittings 703.5.2, 703.5.2.1(2), Table 408.1

ASTM F2159-2011 2014*

Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing

Joints Fittings Table 408.1

ASTM F2262-2009*

Crosslinked Polyethylene/ Aluminum/ Crosslinked Polyethylene Tubing OD Controlled SDR9


ASTM F2389-2010 2015

Pressure-Rated Polypropylene (PP) Piping Systems


ASTM F2434-2009 2014*

Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) Tubing

Pipe Fittings 409.5(1), Table 408.1

ASTM F2620-2013*

Standard Practice for Heat Fusion Joining of Polyethylene Pipe and Fittings

Joints 409.7(1), 409.7(3),

6

703.5.1.1(1), 703.5.1.1(2)

ASTM F2623-2008 2014*

Polyethylene of Raised Temperature (PE-RT) SDR9 Tubing


ASTM F2735-2009 (R2016)*

Plastic Insert Fittings for SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing


ASTM F2769-2010 2014*

Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems

Piping and Fittings, Plastic

Table 408.1

AWS A5.8M/A5.8-2011*

Filler Metals for Brazing and Braze Welding

Joints 409.3(1), 703.6, 703.7

AWS B2.2/B2.2M-2010*

Brazing Procedure and Performance Qualification


AWWA C110-2012*

Ductile-Iron and Gray-Iron Fittings Fittings Table 408.1

AWWA C111-2012*

Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings (same as ANSI A21.11)

Joints 409.6(1), 409.6(2)

AWWA C115-2011*

Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges

Piping Table 408.1

AWWA C151-2009*

Ductile-Iron Pipe, Centrifugally Cast Piping, Ferrous Table 408.1

AWWA C153-2011*

Ductile-Iron Compact Fittings Fittings Table 408.1

AWWA C203-2008*

Coal-Tar Protective Coatings and Linings for Steel Water Pipelines-Enamel and Tape-Hot Applied


AWWA C213-2007*

Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines


AWWA C215-2010*

Extruded Polyolefin Coatings for the Exterior of Steel Water Pipeline


AWWA C500-2009*

Metal-Seated Gate Valves for Water Supply Service

Valves 302.1.2, 302.2

AWWA C507-2011*

Ball Valves, 6 in. through 60 in. (150 mm through 1,500 mm)

Valves 302.1.2, 302.2

BS EN 12975-1-2006 (R2010)

Thermal Solar Systems and Components - Solar Collectors - Part 1: General Requirements

Collector 302.1.2, 302.2

BS EN 12975-2-2006

Thermal Solar Systems and Components - Solar Collectors - Part 2: Test Methods

Collector 302.1.2, 302.2

BS EN 12976-1-2006

Thermal Solar Systems and Components - Factory Made Systems - Part 1: General Requirements

Solar System 302.1.2, 302.2

BS EN 12976-2-2006

Thermal Solar Systems and Components - Factory Made Systems - Part 2: Test Methods

Solar System 302.1.2, 302.2

BS EN ISO 9488-2000

Solar Energy - Vocabulary Miscellaneous 302.1.2, 302.2

CSA B137.1-2013 Polyethylene (PE) Pipe, Tubing, and Fittings for Cold-Water Pressure Services


CSA B137.5-2013 Crosslinked Polyethylene (PEX) Tubing Systems for Pressure Applications


7

CSA B137.9-2013 Polyethylene/Aluminum/Polyethylene (PE-AL-PE) Composite Pressure-Pipe Systems


CSA B137.10-2013 Crosslinked Polyethylene/ Aluminum/Crosslinked Polyethylene (PEX-AL-PEX) Composite Pressure-Pipe Systems


CSA B137.11-2013 Polypropylene (PP-R) Pipe and Fittings for Pressure Applications

Piping, Plastic 409.10(1)

CSA Z21.10.1-20132014*

Gas Water Heaters -, Volume I, Storage Water Heaters with Input Ratings of 75,000 Btu Per Hour or Less (same as CSA 4.1)

Fuel Gas, Appliances

Table 403.2

CSA Z21.10.3-20132015*

Gas-Fired Water Heaters -, Volume III, Storage Water Heaters with Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous (same as CSA 4.3)


Table 403.2

CSA Z21.13-2014* Gas-Fired Low Pressure Steam and Hot Water Boilers (same as CSA 4.9)


302.1.2, 302.2

CSA Z21.22b-2001 (R2008) *

Relief Valves for Hot Water Supply Systems (same as CSA 4.4b)

Valves 302.1.2, 302.2

CSA Z21.24a-2009 (R2011) *

Connectors for Gas Appliances (same as CSA 6.10a)

Fuel Gas 302.1.2, 302.2

CSA Z21.56-2014* Gas-Fired Pool Heaters (same as CSA 4.7)

Fuel Gas, Swimming Pools and Spas, and Hot Tubs

302.1.2, 302.2

IAPMO IS 8-2006 PVC Cold Water Building Supply and Yard Piping


IAPMO IS 13-2006 Protectively Coated Pipe Pipe Coatings 302.1.2, 302.2 IAPMO IS 20-2010e1

CPVC Solvent Cemented Hot and Cold Water Distribution Systems


IAPMO PS 25-2002 Metallic Fittings for Joining Polyethylene Pipe for Water Service and Yard Piping

Joints 302.1.2, 302.2

IAPMO PS 64-2012ae1

Roof Pipe Flashings Miscellaneous 302.1.2, 302.2

IAPMO PS 72-2007e1

Valves with Atmospheric Vacuum Breakers

Valves 302.1.2, 302.2

IAPMO PS-117-2012ae1

Press and Nail Connections Fittings 302.1.2, 302.2

IEEE 937-2007 Installation and Maintenance of Lead-Acid Batteries for Photovoltaic (PV) Systems

Installation and Maintenance, Photovoltaic

302.1.2, 302.2

IEEE 1013-2007 Sizing Lead-Acid Batteries for Stand-Alone Photovoltaic (PV) Systems

Photovoltaic, Sizing

302.1.2, 302.2

IEEE 1361-2003* Lead-Acid Batteries Used in Stand-Alone Photovoltaic (PV) Systems

Testing, Evaluation

302.1.2, 302.2

IEEE 1526-2003* Testing the Performance of Stand-Alone Photovoltaic Systems

Testing, Photovoltaic

302.1.2, 302.2

IEEE 1547-2003 Interconnecting Distributed Resources with Electric Power Systems

Connections, Photovoltaic

302.1.2, 302.2

IEEE 1562-2007 Array and Battery Sizing in Stand-Alone Photovoltaic (PV) Systems

Array, Battery, Photovoltaic

302.1.2, 302.2

IEEE 1661-2007 Lead-Acid Batteries Used in Photovoltaic (PV) Hybrid Power Systems

Testing and Evaluation, Photovoltaic

302.1.2, 302.2

8

MSS SP-58-2009* Pipe Hangers and Supports - Materials, Design, Manufacture, Selection, Application, and Installation

Fuel Gas 302.1.2, 302.2

MSS SP-80-2013 Bronze Gate, Globe, Angle, and Check Valves

Valves 302.1.2, 302.2

NFPA 54/Z223.1-2012*

National Fuel Gas Code Fuel Gas 302.1.2, 302.2

NFPA 70-2014* National Electrical Code Electrical, Miscellaneous

315.1, 414.9.1, 802.2.1, 901.1, 901.3, 907.1, 907.6, 908.1, 908.3, 910.5, 910.6, 910.7, 910.8, 911.3.1.1, 911.3.7(11), 911.3.7(12), 911.3.8(1), 911.4, 911.4.2, 911.6.1, 911.6.1.3, 911.6.2.1, 911.6.2.6, 911.6.3, 911.6.3.3, 911.6.4, 913.5.1, 913.5.2, 913.5.4.2(2), 913.5.4.2(3)(b), 914.1, 914.10.3(1), 914.11, 915.1, 915.2, B 104.1, C 101.9(7)

NFPA 96-2014* Ventilation Control and Fire Protection of Commercial Cooking Operations

Commercial Cooking

302.1.2, 302.2

NFPA 262-20112015*

Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces

Certification 802.2.1

NFPA 274-2013* Test Method to Evaluate Fire Performance Characteristics of Pipe Insulation

Pipe Insulation 302.1.2, 302.2

NGWA-01-2014* Water Well Construction Standard Geothermal 702.1.1, 702.1.2 NSF 14-2013* Plastic Piping System Components and

Related Materials Piping, Plastic 302.1.2, 302.2

NSF 60-20132015* Drinking Water Treatment Chemicals-Health Effects

Backfill 703.4.1

NSF 61-20132015* Drinking Water System Components - Health Effects

Water Supply Components Miscellaneous

501.5.4

SAE J512-1997 Automotive Tube Fittings Fittings 302.1.2, 302.2 SMACNA-2006* HVAC Duct Construction Standards

Metal and Flexible, 3rd edition Ducts, Metal and Flexible

802.1, 802.4, 802.5, 803.3, 803.4, 803.5, 803.6, 803.8, 804.1

SRCC 100-2013 Solar Thermal Collectors Collectors 502.6 SRCC 300-2013 Solar Water Heating Systems Solar System 302.1.2, 302.2 UL 174-2004* Household Electric Storage Tank Water

Heaters (with revisions through September 21, 2012)

Appliances 302.1.2, 302.2

UL 181-2013* Factory-Made Air Ducts and Air Connectors

Air Connectors, Air Ducts

802.1, 802.3, 803.4, 803.5, 803.8, 804.1.1

9

UL 181A-2013* Closure Systems for Use with Rigid Air Ducts

Air Ducts 803.6

UL 181B-2013* Closure Systems for Use with Flexible Air Ducts and Air Connectors

Air Connectors, Air Ducts

803.6

UL 268A-2008* Smoke Detectors for Duct Application (with revisions through September 25, 2009 October 2, 2014)

Smoke Detectors 808.1

UL 555-2006* Fire Dampers (with revisions through November 5, 2013 May 21, 2014)

Dampers 805.2

UL 555C-2006 2014*

Ceiling Dampers (with revisions through May 4, 2010)

Dampers 805.3

UL 555S-1999 2014*

Smoke Dampers (with revisions through October 9, 2013)

Dampers 805.1

UL 723-2008* Test for Surface Burning Characteristics of Building Materials (with revisions through August 12, 2013)

Miscellaneous 401.2, 502.4, 503.1, 606.5, 802.2, 804.1.2

UL 778-2010* Motor-Operated Water Pumps (with revisions through May 23, 2014)

Pumps 302.1.2, 302.2

UL 834-2004* Heating, Water Supply, and Power Boilers - Electric (with revisions through December 9, 2013)

Appliances Table 403.2

UL 873-2007 Temperature-Indicating and -Regulating Equipment (with revisions through August 15, 2013)

Electrical 302.1.2, 302.2

UL 916-2007 Energy Management Equipment (with revisions through December 19, 2013)


UL 969-1995* Marking and Labeling System (with revisions through November 24, 2008)

Marking, Labeling

302.1.2, 302.2

UL 1279-2010 Outline of Investigation for Solar Collectors

Electrical 502.6

UL 1453-2004* Electric Booster and Commercial Storage Tank Water Heaters (with revisions through July 15, 2011)


UL 1703-2002* Flat-Plate Photovoltaic Modules and Panels (with revisions through October 25, 2013 October 12, 2015)

Electrical 902.5

UL 1741-2010 Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources (with revisions through March 23, 2016)

Electrical 914.10

UL 1820-2004* Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics (with revisions through May 10, 2013)

Surface Burning Test, Pneumatic Tubing

802.2.3

UL 1887-2004* Fire Test of Plastic Sprinkler Pipe for Visible Flame and Smoke Characteristics (with revisions through May, 3, 2013)

Surface Burning Test, Fire Sprinkler Pipe

802.2.2

UL 2043-2013* Fire Test for Heat and Visible Smoke Release for Discrete Products and their Accessories Installed in Air-Handling Spaces

Surface Burning Test, Discrete Products

802.2.4, 802.2.5

UL 2523-2009* Solid Fuel-Fired Hydronic Heating Appliances, Water Heaters, and Boilers (with revisions through February 8, 2013)


Table 403.2

UL 4703-2010 Outline of Investigation for Photovoltaic Wire


UL 6703-2011 Outline of Investigation for Connectors for Use in Photovoltaic Systems


10

UL 8703-2011 Outline of Investigation for Concentrator Photovoltaic Modules and Assemblies


UL 60730-1 2009* Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements (with revisions through November 13, 2013)


*ANSI designated as an American National Standard. Italic/Bold referenced standards indicate where such standards are located in the narrative of the code. Notes: 1 Although this standard is referenced in Table 1001.1, some of the pipe, tubing, fittings, or valves included in the standard are not acceptable for use under the provisions of this code. 2 See Section 409.3 for restrictions. 3 Alloy C85200 for cleanout plugs. 4 Standards for materials, equipment, joints and connections. Where more than one standard has been listed for the same material or method, the relevant portions of all such standards shall apply

11

The standards,

publications, practices and guides listed in Table 1001.2 are not referenced in other

sections of this code. The application of the referenced standards, publications,

practices and guides shall be as specified in Section 302.1.2. The promulgating

agency acronyms are found at the end of the table.

ASHRAE 90.1-

2013

Energy Standard for Buildings

Except Low-Rise Residential

Buildings

Energy

ASHRAE 93-2010

(RA2014)*

Methods of Testing to Determine

the Thermal Performance of

Solar Collectors

Testing

ASHRAE 95-1981

(RA1987)

Methods of Testing to Determine

the Thermal Performance of

Solar Domestic Water Heating

Systems

Testing

ASHRAE 96-1980

(RA1989)

Thermal Performance of

Unglazed Flat-Plate Liquid-Type

Solar Collectors

Testing,

Collector

ASME A13.1-2015 Scheme for the Identification of

Piping Systems

Piping

ASME B16.21-

2011

Nonmetallic Flat Gaskets for

Pipe Flanges

Joints

ASME B16.34-

2013

Valves - Flanged, Threaded, and

Welding End

Valves

ASME B16.47-

2011

Large Diameter Steel Flanges:

NPS 26 Through NPS 60

Metric/Inch

Fittings

ASME BPVC

Section IV-2015

Rules for Construction of

Heating Boilers

Miscellaneous

ASME BPVC

Section IX-2015

Welding, Brazing, and Fusing

Qualifications

Certification

ASSE 1010-2004 Water Hammer Arresters Water Supply

Component

ASTM A377-2003

(R2014)

Ductile-Iron Pressure Pipe Piping, Ferrous

ASTM A733-2015 Welded and Seamless Carbon

Steel and Austenitic Stainless

Steel Pipe Nipples

Piping, Ferrous

ASTM D56-2005

(R2010)

Flash Point by the Tag Closed

Cup Tester

Testing

ASTM D93-2015a Flash Point by Pensky-Martens

Closed Cup Tester

Testing

12

ASTM D635-2014 Rate of Burning and/or Extent

and Time of Burning of Plastics

in a Horizontal Position

Testing

ASTM D2235-

2004 (R2011)

Solvent Cement for

Acrylonitrile-Butadiene-Styrene

(ABS) Plastic Pipe and Fittings

Joints

ASTM D2672-

2014

Joints for IPS PVC Pipe Using

Solvent Cement

Joints

ASTM D2855-

2015

Two-Step (Primer and Solvent

Cement) Method of Joining Poly

(Vinyl Chloride) (PVC) or

Chlorinated Poly (Vinyl

Chloride) (CPVC) Pipe and

Piping Components with Tapered

Sockets

Joints

ASTM D3278-

1996 (R2011)

Flash Point of Liquids by Small

Scale Closed-Cup Apparatus

Testing

ASTM E136-2016 Behavior of Materials in a

Vertical Tube Furnace at 750°C

Furnace

ASTM F480-2014 Thermoplastic Well Casing Pipe

and Couplings Made in Stand-ard

Dimension Ratios (SDR), SCH

40 and SCH 80

Piping, Plastic

ASTM F891-2010 Coextruded Poly(Vinyl Chloride)

(PVC) Plastic Pipe with a

Cellular Core

Piping, Plastic

AWS B2.2/B2.2M-

2010

Brazing Procedure and

Performance Qualification

Certification

AWWA C507-

2015

Ball Valves, 6 in. through 60 in.

(150 mm through 1,500 mm)

Valves

BS EN 12975-1-

2006 (R2010)

Thermal Solar Systems and

Components - Solar Collectors -

Part 1: General Requirements

Collector

BS EN 12975-2-

2006


Components - Solar Collectors -

Part 2: Test Methods

Collector

BS EN 12976-1-

2006


Components - Factory Made

Systems - Part 1: General

Requirements

Solar System

BS EN 12976-2-

2006


Components - Factory Made

Systems - Part 2: Test Methods

Solar System

BS EN ISO 9488-

2000

Solar Energy - Vocabulary Miscellaneous

CSA Z21.22-2015 Relief Valves for Hot Water

Supply Systems (same as CSA

4.4)

Valves

CSA Z21.24-2015 Connectors for Gas Appliances

(same as CSA 6.10)

Fuel Gas

IAPMO PS-117-

2012ae1

Press and Nail Connections Fittings

IEEE 937-2007 Installation and Maintenance of

Lead-Acid Batteries for

Photovoltaic (PV) Systems

Installation and

Maintenance,

Photovoltaic

IEEE 1013-2007 Sizing Lead-Acid Batteries for

Stand-Alone Photovoltaic (PV)

Systems

Photovoltaic,

Sizing

13

IEEE 1361-2014 Lead-Acid Batteries Used in


Systems

Testing,

Evaluation

IEEE 1526-2003 Testing the Performance of

Stand-Alone Photovoltaic

Systems

Testing,

Photovoltaic

IEEE 1547-2003 Interconnecting Distributed

Resources with Electric Power

Systems

Connections,

Photovoltaic

IEEE 1562-2007 Array and Battery Sizing in


Systems

Array, Battery,

Photovoltaic

IEEE 1661-2007 Lead-Acid Batteries Used in

Photovoltaic (PV) Hybrid Power

Systems

Testing and

Evaluation,

Photovoltaic

MSS SP-58-2009 Pipe Hangers and Supports -

Materials, Design, Manufacture,

Selection, Application, and

Installation

Fuel Gas

MSS SP-80-2013 Bronze Gate, Globe, Angle, and

Check Valves

Valves

NFPA 54/Z223.1-

2015

National Fuel Gas Code Fuel Gas

NFPA 274-2013 Test Method to Evaluate Fire

Performance Characteristics of

Pipe Insulation

Pipe Insulation

NSF 14-2015 Plastic Piping System

Components and Related

Materials

Piping, Plastic

SRCC 300-2013 Solar Water Heating Systems Solar System

UL 174-2004 Household Electric Storage Tank

Water Heaters (with revisions

through April 10, 2015)

Appliances

UL 778-2010 Motor-Operated Water Pumps

(with revisions September 2,

2015)

Pumps

UL 873-2007 Temperature-Indicating and -

Regulating Equipment (with

revisions through February 6,

2015)

Electrical

UL 916-2015 Energy Management Equipment Electrical

UL 1453-2016 Electric Booster and Commercial

Storage Tank Water Heaters

Appliances

UL 4703-2014 Photovoltaic Wire Electrical

UL 6703-2014 Connectors for Use in

Photovoltaic Systems (with

revisions through January 16,

2015)

Electrical

UL 8703-2011 Outline of Investigation for

Concentrator Photovoltaic

Modules and Assemblies

Electrical

UL 60730-1 2009 Automatic Electrical Controls for

Household and Similar Use, Part

1: General Requirements (with

revisions through November 13,

2013)

Electrical

14

STANDARDS OUTSIDE THE SCOPE

ASCE Publications

American Society of Civil Engineers, 1801 Alexander Bell Drive, Reston, VA

20191-4400. ASCE 25, Earthquake-Actuated Automatic Gas Shutoff Devices, 2006.

ASME Publications

American Society of Mechanical Engineers, Two Park Avenue, New York, NY

10016-5990.

ASME A112.18.1/CSA B125.1, Plumbing Supply Fittings, 2012.

ASME A112.18.2/CSA B125.2, Plumbing Waste Fittings, 2011.

ASME A112.18.6/CSA B125.6, 2009 (R2014).

ASME B16.12, Cast Iron Threaded Drainage Fittings, 2009.

ASME B16.33, Manually Operated Metallic Gas Valves for Use in Gas Piping

Systems Up to 175 psi (Sizes NPS 1⁄2 through NPS 2), 2012.

ASSE Publications

American Society of Sanitary Engineering, 18927 Hickory Creek Drive, Suite 220, Mokena IL 60448. ASSE 1001, Atmospheric Type Vacuum Breakers, 2008.

ASSE 1018, Trap Seal Primer Valves – Potable Water Supplied, 2001.

ASTM Publications

15

ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. ASTM A74, Cast Iron Soil Pipe and Fittings, 2013a. ASTM A518/A518M, Corrosion-Resistant High-Silicon Iron Castings, 1999 (R2012). ASTM A861, High-Silicon Iron Pipe and Fittings, 2004 (R2013).

ASTM B306, Copper Drainage Tube (DWV), 2013.

ASTM B584, Copper Alloy Sand Castings for General Applications, 2014.

ASTM B587, Welded Brass Tube, 2012.

ASTM B687, Brass, Copper, and Chromium-Plated Pipe Nipples, 1999 (R2011).

ASTM C425, Compression Joints for Vitrified Clay Pipe and Fittings, 2004 (R2013).

ASTM C443, Joints for Concrete Pipe and Manholes, Using Rubber Gaskets, 2012.

ASTM C564, Rubber Gaskets for Cast Iron Soil Pipe and Fittings, 2014.

ASTM C700, Vitrified Clay Pipe, Extra Strength, Standard Strength, and Perforated,

2013.

ASTM C1277, Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings,

2014.

ASTM F628, Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain,

Waste, and Vent Pipe with a Cellular Core, 2012e1.

AWWA Publications

American Water Works Association, 6666 W. Quincy Avenue, Denver, CO 80235. AWWA C203, Coal-Tar Protective Coatings and Linings for Steel Water Pipelines –

Enamel and Tape – Hot Applied, 2008.

AWWA C213, Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel

Water Pipelines, 2007.

AWWA C215, Extruded Polyolefin Coatings for the Exterior of Steel Water Pipelines, 2007. AWWA C500, Metal-Seated Gate Valves for Water Supply Service, 2009.

CSA Publications

Canadian Standards Association, 5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada, L4W 5N6. CSA Z21.13, Gas-Fired Low Pressure Steam and Hot Water Boilers (same as CSA 4.9), 2014. CSA Z21.56, Gas-Fired Pool Heaters (same as CSA 4.7), 2014.

IAPMO Publications

International Association of Plumbing and Mechanical Officials, 5001 E. Philadelphia Street, Ontario, CA 91761. IAPMO IS 8, PVC Cold Water Building Supply and Yard Piping, 2006.

IAPMO IS 13, Protectively Coated Pipe, 2006.

IAPMO IS 20, CPVC Solvent Cemented Hot and Cold Water Distribution Systems,

2010e1.

IAPMO PS 25, Metallic Fittings for Joining Polyethylene Pipe for Water Service and

Yard Piping, 2002.

IAPMO PS 64, Roof Pipe Flashings, 2012 ae1.

IAPMO PS 72, Valves with Atmospheric Vacuum Breakers, 2007e1.

NFPA Publications

National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471.

16

NFPA 96, Ventilation Control and Fire Protection of Commercial Cooking

Operations, 2014.

SAE Publications

Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA

15096.

SAE J512, Automotive Tube Fittings, 1997.

UL Publications

Underwriters Laboratories, Inc., 333 Pfingsten Road, Northbrook, IL 60062. UL 969, Marking and Labeling System (with revisions through November 24,

2008).

17

USEHC 2018 – (302.1.2) Item # 003

Name: Julius A Ballanco, PE

Representing: JB Engineering and Code Consulting, P.C.

Recommendation: Revise text

Section Number: 302.1.2

Proposed Text:

302.0 Materials – Standards and Alternates. 302.1.2 Standards. Standards listed or referred to in this chapter or other chapters cover materials that will conform to the requirements of this code, where used in accordance with the limitations imposed in this or other chapters thereof and their listing. Where a standard covers materials of various grades, weights, quality, or configurations, the portion of the listed standard that is applicable shall be used. Design and materials for special conditions or materials not provided for herein shall be permitted to be used by special permission of the Authority Having Jurisdiction after the Authority Having Jurisdiction has been satisfied as to their adequacy. A list of accepted material solar energy and hydronics standards that appear in specific sections of this code are referenced in Table 1001.1. Standards referenced in Table 1001.1 shall be applied as indicated in the applicable referenced section. A list of additional standards, publications, practices and guides that are not referenced in specific sections of this code appear in Table 1001.2. The documents indicated in Table 1001.2 shall be permitted in accordance with Section 302.2.

Problem Statement:

This change correlates the requirements of this section with the changes to Table 1001.1. A change to Table 1001.1 will remove the standards not referenced in the code and place those standards, which were determined to be within the scope of the code into a new Table 1001.2. Table 1001.2 will contain the standards that can be used by the AHJ to approve a product, installation, or design. The Task Group considered deleting the wording, "after the AHJ has deemed the applicable standard appropriate," after "in accordance with Section 302.2." The Technical Committee can consider a modification to delete this language if they find it inappropriate to include.

18

USEHC 2018 – (214.0) Item # 004

Name: John Taecker

Representing: UL LLC


Section Number: 214.0

Proposed Text:

214.0 Labeled. Equipment or materials bearing a label of a listing agency (accredited conformity assessment body). The manner in which the equipment or materials are labeled shall be in accordance with the listing agency system. See Listed (Third-Party Certified).

Problem Statement:

The method by which products are labeled is defined by the listing agency and may differ from the classic interpretation of a tag that is affixed directly to the product. Listing agencies define the manner in which a product should be marked taking into account such challenges such as the product size, product configuration, product material and new innovative methods of labeling. This change will give clear guidance to the AHJ that the labeling method should be in accordance with the labeling system as established by the listing agency.

19

USEHC 2018 – (214.0, 315.2, 403.2, 502.6) Item # 005

Name: John Taecker



Section Number: 214.0, 315.2, 403.2, 502.6

Proposed Text:

214.0 Listing Agency. An agency accredited by an independent and authoritative conformity assessment body to operate a material and product listing and labeling (certification) system and that is accepted by the Authority Having Jurisdiction, which is in the business of listing or and labeling. The system includes initial and ongoing product testing, a periodic inspection on current production of listed (certified) products, and that makes available a published report of such listing in which specific information is included that the material or product is in accordance with applicable standards and found safe for use in a specific manner. 315.0 Electrical. 315.2 Controls. Required electrical, mechanical, safety, and operating controls shall be listed or and labeled by a listing agency. Electrical controls shall be of such design and construction as to be suitable for installation in the environment in which they are located. 403.0 Capacity of Heat Source. 403.2 Dual Purpose Water Heater. Water heaters utilized for combined space-and water-heating applications shall be listed or and labeled in accordance with the standards referenced in Table 403.2, and shall be installed in accordance with the manufacturer’s installation instructions. The total heating capacity of a dual purpose water heater shall be based on the sum of the potable hot water requirements and the space heating design requirements corrected for hot water first hour draw recovery. 502.0 Solar Collectors. 502.6 Listing. Collectors that are manufactured as a complete component shall be listed or and labeled by an approved listing agency in accordance with SRCC 100, UL 1279, or equivalent standard.

Problem Statement:

Only products which are listed and labeled as to that particular equipment meeting the terms of the listing labeling requirements can be verified to comply with the requirements of their listings. The model number as identified by a third party certification agency does not necessarily guarantee that the unit that is installed in the field has undergone the factory inspection, testing as applicable and traceability of components at the factory that a truly listed unit does. If is often determined at the factory that a shipment of units may have used unauthorized components, failed factory testing or the manufacturer may have business reasons to not want the unit inspected. As such, the model will not be able to bear the appropriate marking/labeling that would identify it as listed and will be shipped from the factory without that. Only when it is listed AND labeled can the actual unit be verified as being compliant with applicable requirements.

20

USEHC 2018 – (302.1) Item # 006

Name: John Taecker




Proposed Text:

302.0 Materials – Standards and Alternates. 302.1 Minimum Standards. Pipe, pipe fittings, appliances, appurtenances, equipment, material, and devices used shall be listed or and labeled (third party certified) by a listing agency (accredited conformity assessment body) and shall comply with the approved applicable recognized standards referenced in this code, and shall be free from defects. Unless otherwise provided for in this code, materials, appurtenances, or devices used or entering into the construction of a system, or parts thereof, shall be submitted to the Authority Having Jurisdiction for approval.

Problem Statement:

Only products which are listed and labeled as to that particular equipment meeting the terms of the listing labeling requirements can be verified to comply with the requirements of their listings. The model number as identified by a third party certification agency does not necessarily guarantee that the unit that is installed in the field has undergone the factory inspection, testing as applicable and traceability of components at the factory that a truly listed unit does. If is often determined at the factory that a shipment of units may have used unauthorized components, failed factory testing or the manufacturer may have business reasons to not want the unit inspected. As such, the model will not be able to bear the appropriate marking/labeling that would identify it as listed and will be shipped from the factory without that. Only when it is listed AND labeled can the actual unit be verified as being compliant with applicable requirements.

21

USEHC 2018 – (304.2 – 304.4.6) Item # 007

Name: IAPMO Staff – Update Extracts

Representing: IAPMO Staff – Update Extracts


Section Number: 304.2 – 304.4.6

Proposed Text:

304.0 Accessibility for Service. 304.2 Access to Equipment and Appliances on Roofs. Equipment and aAppliances located on roofs or other elevated locations shall be accessible. [NFPA 54:9.4.3.1] 304.2.2 Access Type. The inside means of access shall be a permanent, or foldaway inside stairway or ladder, terminating in an enclosure, scuttle, or trapdoor. Such scuttles or trapdoors shall be not less than at least 22 inches by 24 inches (559 mm by 610 mm) in size, shall open easily and safely under all conditions, especially snow; and shall be constructed so as to permit access from the roof side unless deliberately locked on the inside. Not less than At least 6 feet (1829 mm) of clearance shall be available between the access opening and the edge of the roof or similar hazard, or rigidly fixed rails or guards not less than a minimum of 42 inches (1067 mm) in height shall be provided on the exposed side. Where parapets or other building structures are utilized in lieu of guards or rails, they shall be not less than a minimum of 42 inches (1067 mm) in height. [NFPA 54:9.4.3.3] 304.3.1 Length of Passageway. Where the height of the passageway is less than 6 feet (1829 mm), the distance from the passageway access to the appliance shall not exceed 20 feet (6096 mm) measured along the centerline of the passageway. [NFPA 54:9.5.1.1] 304.3.2 Width of Passageway. The passageway shall be unobstructed and shall have solid flooring not less than 24 inches (610 mm) wide from the entrance opening to the appliance. [NFPA 54:9.5.1.2] 304.3.3 Work Platform. A level working platform not less than 30 inches by 30 inches (762 mm by 762 mm) shall be provided in front of the service side of the appliance. [NFPA 54:9.5.2] Exception: A working platform need not be provided where the furnace is capable of being serviced from the required access opening. The furnace service side shall not exceed 12 inches (305 mm) from the access opening. 304.3.4 Lighting and Convenience Outlet. A permanent 120-volt V receptacle outlet and a lighting fixture shall be installed near the appliance. The switch controlling the lighting fixture shall be located at the entrance to the passageway. [NFPA 54:9.5.3] 304.4 Equipment and Appliances on Roofs. Equipment and aAppliances on roofs shall be designed or enclosed so as to withstand climatic conditions in the area in which they are installed. Where enclosures are provided, each enclosure shall permit easy entry and movement, shall be of reasonable height, and shall have not less than at least a 30 inch (762 mm) clearance between the entire service access panel(s) of the equipment and appliance and the wall of the enclosure. [NFPA 54:9.4.1.1] 304.4.1 Load Capacity. Roofs on which equipment and appliances are to be installed shall be capable of supporting the additional load or shall be reinforced to support the additional load. [NFPA 54:9.4.1.2] 304.4.2 Fasteners. All access locks, screws, and bolts shall be of corrosion-resistant material. [NFPA 54:9.4.1.3] 304.4.3 Installation of Equipment and Appliances on Roofs. Equipment and a Appliances shall be installed in accordance with the manufacturer’s installation instructions. [NFPA 54:9.4.2.1]

22

USEHC 2018 – (304.2 – 304.4.6) Item # 007

304.4.5 Electrical Power. Equipment and aAll appliances requiring an external source of electrical power for its operation shall be provided with the following: (1) A readily accessible electrical disconnecting means within sight of the equipment and

appliance that will completely de-energizes the equipment and appliance. (2) A 120-VAC V ac grounding-type receptacle outlet on the roof adjacent to the

equipment and appliance. The receptacle outlet shall be on the supply side of the disconnect switch. [NFPA 54:9.4.2.3]

304.4.6 Platform or Walkway. Where water stands on the roof at the equipment, and appliance or in the passageways to the equipment and appliance, or where the roof is of a design having a water seal, an approved suitable platform, walkway, or both shall be provided above the water line. Such platform(s) or walkway(s) shall be located adjacent to the equipment and appliance and control panels so that the equipment and appliance is capable of being can be safely serviced where water stands on the roof. [NFPA 54:9.4.2.4]

Problem Statement: The above sections have been revised to correlate with NFPA 54-2015 (latest version) in accordance with IAPMO’s Regulations Governing Committee Projects (Extract Guidelines).

23

USEHC 2018 – (310.1) Item # 008

Name: Lance MacNevin, P.Eng.

Representing: Plastics Pipe Institute



Proposed Text:

310.0 Circulators and Pumps. 310.1 General. Circulators and pumps shall be listed selected for their intended use based on the heat transfer medium fluid, intended operating temperature range and pressure. Circulators and pumps shall be installed to allow for service and maintenance. The manufacturer’s installation instructions shall be followed for correct orientation and installation.

Problem Statement:

The terms circulator and pump are somewhat synonymous, though different manufacturers apply these terms to devices of various sizes in an inconsistent manner. In other words, what one manufactures might call a "pump" another calls a circulator. Proposed language is inclusive of both terms to prevent confusion about which devices are covered by this section. Codes should not require these devices to be "listed", as none of these devices have listing programs. Better term is "selected". "Operating temperature range and pressure" are important criteria for selecting these devices, so language is added to ensure these factors are considered.

24

USEHC 2018 – (310.2) Item # 009





Proposed Text:

310.0 Circulators and Pumps. 310.2 Mounting. The circulator or pump shall be installed in such a way that strain from the piping is not transferred to the circulator or pump housing. The circulator or pump shall be permitted to be directly connected to the piping, provided the piping is supported on each side of the circulator or pump. Where the installation of a circulator or pump will cause strain on the piping, the circulator or pump shall be installed on a mounting bracket or base plate. Where means for controlling vibration of a circulator or pump is required, an approved means for support and restraint shall be provided.

Problem Statement:

The terms circulator and pump are somewhat synonymous, though different manufacturers apply these terms to devices of various sizes in an inconsistent manner. In other words, what one manufactures might call a "pump" another calls a circulator. Proposed language is inclusive of both terms to prevent confusion about which devices are covered by this section.

25

USEHC 2018 – (310.3) Item # 010





Proposed Text:

310.0 Circulators and Pumps. 310.3 Sizing. The selection and sizing of a circulator or pump shall be based on the following: (1) Loop or system head pressure, feet of head (m) (2) Capacity, gallons per minute (L/s) (3) Maximum and minimum velocity, feet per second (m/s) Intended operating

temperature, °F (°C) and pressure, psi (kPa) range (4) Maximum and minimum temperature, °F (°C) (5) Maximum working pressure, pounds-force per square inch (kPa) (6) Fluid type

Problem Statement:

The terms circulator and pump are somewhat synonymous, though different manufacturers apply these terms to devices of various sizes in an inconsistent manner. In other words, what one manufactures might call a "pump" another calls a circulator. Proposed language is inclusive of both terms to prevent confusion about which devices are covered by this section. Item 3 in Section 310.3 should be replaced as velocity is not a factor in the selection of these devices. Further, the location for measurement of the velocity is not defined, so this language can cause confusion. The replacement text is also added to 310.1 and is very relevant for selecting these devices.

26

USEHC 2018 – (312.10) Item # 011





Proposed Text:

312.0 Valves. 312.10 Thermosiphoning. An approved type check valve shall be installed on hydronic liquid heat transfer piping to control thermosiphoning of heated fluids liquids. Exception: Hydronic systems with thermal heat traps constructed of vertical piping a minimum of 18 inches (450 mm) in height.

Problem Statement:

The term "liquid" is being revised to "fluid" for consistency with language used in other sections of this code, other codes, trades and with the definition of "hydronics." The exception is being added since thermal heat traps make check valves unnecessary.

27

USEHC 2018 – (401.1) Item # 012





Proposed Text:

401.0 General. 401.1 Applicability. This chapter shall apply to hydronic piping systems that are part of heating, cooling, ventilation, refrigeration, and air conditioning systems. Such piping systems include steam, hot water, chilled water, steam condensate, condenser water, solar thermal systems, and ground source heat pump systems. The regulations of this chapter shall govern the construction, location, and installation of hydronic piping systems.

Problem Statement:

Refrigeration should be added to include other refrigeration processes other than air conditioning and to be more inclusive of other heating and cooling systems for hydronics. Condenser water should be added as a related fluid in certain hydronic systems.

28

USEHC 2018 – (401.2) Item # 013





Proposed Text:

401.0 General. 401.2 Insulation. The temperature of sSurfaces within reach of building occupants, including maintenance personnel, shall be insulated so that they will not exceed 140°F (60°C) unless they are protected by insulation. Where sleeves are installed, the insulation shall continue full size through them.

Coverings and insulation used for piping shall be of material approved for the operating temperature of the system and the installation environment. Where installed in a plenum, the insulation, jackets, and lap-seal adhesives, including pipe coverings and linings, shall have a flame-spread index not to exceed 25 and a smoke-developed index not to exceed 50 where tested in accordance with ASTM E84 or UL 723.

Problem Statement:

As written, the current language allows surfaces to be hotter than 140⁰F if they have insulation. This would allow inadequately-insulated piping to exceed 140⁰F on the surface, which was likely not the intention of the current language. The revised language would correct this gap to prevent surfaces from being too hot, for safety. Furthermore, the proposal makes it clear that the occupants include maintenance personnel who could be injured while working near hot components systems in mechanical rooms.

29

USEHC 2018 – (401.4) Item # 014





Proposed Text:

401.0 General.

401.4 Manifolds. Manifolds shall be equipped with a fullway isolation valves that is fully sealed on the supply and return lines. Manifolds shall be capable of withstanding the pressure and temperature of the system. The material of the manifold shall be compatible with the system fluid and shall be installed in accordance with the manufacturer’s installation instructions.

Problem Statement:

The term in industry jargon "fullway" is used to apply to gate valves, which are not the type of valves included with hydronic manifolds. Gate valves are physically too large for inclusion in most hydronic manifold applications. In fact, quarter-turn ball valves are typically supplied with packaged hydronic manifolds, and are sized and selected by the manifold manufacturer to allow the maximum flow that is required by the manifolds when used at their capacity. Further, existing language requires a singular "valve", worded in a confusing way. Therefore, the proposal deletes the word "fullway", pluralizes "valves" and deletes "fully sealed" as a term that is not defined, but yet inherent, as all valves must be sealed so as to not leak by definition and standard.

30

USEHC 2018 – (402.1) Item # 015



Recommendation: Add new text


Proposed Text:

402.0 Protection of Potable Water Supply. 402.1 Prohibited Sources. Hydronic systems or parts thereof, shall be constructed in such a manner that polluted, contaminated water, or substances shall not enter a portion of the potable water system either during normal use or where the system is subject to pressure that exceeds the operating pressure in the potable water system. Piping, components, and devices in contact with the potable water shall be approved for such use and where an additive is used it shall not affect the performance of the system. Hydronic systems shall not be connected to potable water distribution in such a manner that water from the hydronic system can enter the potable water system.

Problem Statement:

New language is intended to clearly prevent the construction of hydronic systems which share potable water with the plumbing system. Such systems have a strong potential for allowing stagnant water to be a potential breeding ground for dangerous bacteria such as Legionella, and then to reintroduce that contaminated water into the hot-water distribution system through faucets and showers. Installers can satisfy this new requirement by utilizing approved heat exchangers to separate potable water from hydronic water, for public safety. Please refer to PPI Recommendation E "Recommendation Against Mixing Hydronic Heating Water with Potable Water" available here: http://www.plasticpipe.org/pdf/recommendation-e-potable-hydronic-mixing.pdf

31

http://www.plasticpipe.org/pdf/recommendation-e-potable-hydronic-mixing.pdf

USEHC 2018 – (402.2) Item # 016

Name: Kirk Nagus

Representing: Axiom Industries Ltd.



Proposed Text:

402.0 Protection of Potable Water Supply 402.1 Prohibited Sources. Hydronic systems or parts thereof, shall be constructed in such a manner that polluted, contaminated water, or substances shall not enter a portion of the potable water system either during normal use or where the system is subject to pressure that exceeds the operating pressure in the potable water system. Piping, components, and devices in contact with the potable water shall be approved for such use and where an additive is used it shall not affect the performance of the system. 402.2 Protection of Potable Water. The potable water system shall be protected from backflow Where only water is used as a heat transfer medium and pressurization is achieved using a potable water supply, appropriate backflow devices shall be installed in accordance with the Uniform Plumbing Code. Where additives such as glycol or chemical inhibitors are used, the use of a system pressurization unit (also known as a glycol feeder) shall be required, in order to (1) guarantee that there is no backflow of chemicals into the potable water line; (2) provide flood protection; and (3) regulate system pressure.

Problem Statement:

The use of system pressurization units, or glycol feeders, guarantees that there is no connection between the potable water line and system fluid. In an ordinary backflow prevention setup, protection of potable water is dependent only on mechanical components such as backflow preventers and pressure reducing valves. If these fail, then there is a direct connection between potable water and system fluid. The use of a glycol feeder ensures that there exists no connection between system fluid and the potable water line. The system pressurization unit regulates pressure in the system and automatically pumps in system fluid when necessary, directly from the feed tank, without any connection to the water line. System feeders also provide flood protection. If a leak occurs, only the contents of the tank can be pumped out, rather than unrestricted flow, as would occur with a potable water make-up supply that was not isolated. If the PRV is installed as per the manufactures recommendations (make-up water isolated) then it is not automatic. It becomes a manual operation. Also, using a system feeder allows you to ensure a compatible fluid is used for make-up requirements. The use of system feeders has gained wide acceptance over the last 15 years and it is now common practice in the US and Canada. There exist several competing companies who make these sorts of products in all sizes required for hydronic systems.

32

UEHC 2018 – (402.3) Item # 017





Proposed Text:

402.0 Protection of Potable Water Supply. 402.3 Compatibility. Fluids used in hydronic systems shall be compatible with all components that will contact the fluid. Where materials in the hydronic system are not suitable for use in a potable water system, such potable water shall not be used. Where a heat exchanger is installed with a dual purpose water heater, such application shall comply with the requirements for a single wall heat exchanger in Section 313.1.

Problem Statement:

With the proposed addition to Section 402.1, potable water will no longer be used in hydronic systems, so the existing first sentence is no longer relevant and should be deleted. New first sentence is proposed to ensure that the hydronic fluid - such as water, water with additives, or various antifreeze mixtures - is compatible with components.

33

USEHC 2018 – (403.2) Item # 018





Proposed Text:

403.0 Capacity of Heat Source. 403.2 Storage-type Dual Purpose Water Heater. Water heaters utilized for combined space-and water-heating applications shall be listed or labeled in accordance with the standards referenced in Table 403.2, and shall be installed in accordance with the manufacturer’s installation instructions. The total heating capacity of a dual purpose water heater shall be based on the sum of the potable hot water requirements and the space heating design requirements corrected for hot water first hour draw recovery. Systems utilizing water heaters for combined space-heating and water-heating applications shall prevent introduction of hydronic water into the potable water distribution system.

Problem Statement:

Title change clarifies which water heaters are covered in this section. New language is intended to clearly prevent the construction of hydronic systems which share potable water with the plumbing system. Such systems have a strong potential for allowing stagnant water to be a potential breeding ground for dangerous bacteria such as Legionella, and then to reintroduce that contaminated water into the hot-water distribution system through faucets and showers. Dual purpose water heaters which separate potable water from hydronic water with internal heat exchangers will not be affected by this proposed change. Please refer to PPI Recommendation E "Recommendation Against Mixing Hydronic Heating Water with Potable Water" available here: http://www.plasticpipe.org/pdf/recommendation-e-potable-hydronic-mixing.pdf

34


USEHC 2018 – (403.3) Item # 019





Proposed Text:

403.0 Capacity of Heat Source. 403.3 Tankless Water Heater. The output performance on of tankless water heaters shall be as rated for heating applications determined by the temperature rise and flow rate of water through the unit. The ratings shall be expressed by the water temperature rise at a given flow rate. Manufacturers flow rates shall not be exceeded.

Problem Statement: In first sentence, the word "on" should be "of". Second sentence is revised to be appropriate to heating systems - the existing language applies to domestic water heating applications.

35

USEHC 2018 – (404.7) Item # 020





Proposed Text:

404.0 Identification of Piping Systems. 404.7 Heat Transfer Fluid Medium. Solar thermal piping shall be identified with an orange background with black uppercase lettering, with the words “CAUTION: HEAT TRANSFER FLUID MEDIUM, DO NOT DRINK.” Each solar thermal system shall be identified to designate the fluid medium being conveyed. The minimum size of the letters and length of the color field shall comply with Table 404.3.

Each outlet on the solar thermal piping system shall be posted with black uppercase lettering as follows: “CAUTION: HEAT TRANSFER FLUID MEDIUM, DO NOT DRINK.”

Problem Statement: The term "medium" is being revised to "fluid" for consistency with language used in other sections of this code, other codes, trades and with the definition of "hydronics."

36

USEHC 2018 – (405.2) Item # 021

Name: Michael Cudahy

Representing: Plastic Pipe and Fittings Association (PPFA)



Proposed Text:

405.0 Installation, Testing, and Inspection. 405.2 Pressure Testing. System piping and components shall be tested with a pressure of not less than one and one half times the operating pressure but not less than 100 psi (689 kPa). Piping shall be tested with water or air except that plastic pipe shall not be tested with air. Test pressures shall be held for a period of not less than 30 minutes with no perceptible drop in pressure. These tests shall be made in the presence of the Authority Having Jurisdiction. Exception: Air testing of PEX, PE-RT, PEX/AL/PEX, and PE/AL/PE piping done in accordance with manufacturer's instructions and listings, with the approval of the AHJ.

Problem Statement: The Plastic Pipe and Fittings Association (PPFA) position on air testing of plastic piping was revised in 2013 allowing for air testing if approved by the plastic piping and component manufacturers as well as the local AHJ.

37

USEHC 2018 – (405.2) Item # 022





Proposed Text:

405.0 Installation, Testing, and Inspection. 405.2 Pressure Testing. System piping and components shall be tested with a pressure of not less than one and one-half times the operating pressure but not less than 100 psi (689 kPa). Piping shall be tested with water or air except that plastic pipe shall not be tested with air. Test pressures shall be held for a period of not less than 30 minutes with no perceptible drop in pressure. These tests shall be made in the presence of the Authority Having Jurisdiction. Exception: For PEX, PP-R, PP-RCT, PEX-AL-PEX, PE-RT, and PE-AL-PE piping systems, testing with air shall be permitted where authorized by the manufacturer's instructions for the PEX, PP-R, PP-RCT, PEX-AL-PEX, PE-RT, and PE-AL-PE pipe and fittings products, and air testing is not prohibited by applicable codes, laws, or regulations outside this code.

Problem Statement:

Similar language has been accepted by the UMC TC and is supported by both PPI and PPFA. Similar changes have also been accepted by the International Codes. The piping materials included in the proposed Exception will not shatter under pressure and pose no greater risk in an air pressure test than a metallic piping system under the same conditions. In environments where fluids will freeze, potentially damaging the pipe itself and other components, testing with air is the safer option. With this proposed language, piping manufacturers have the ability to recommend air testing if they approve of it.

38

USEHC 2018 – (405.3) Item # 023





Proposed Text:

405.0 Installation, Testing, and Inspection. 405.3 Flushing. Heating and cooling sources, system piping and tubing shall be flushed after installation with water or a cleaning solution. Cleaning and flushing of the heating and cooling sources shall comply with the manufacturer’s instructions. The cleaning solution shall be compatible with all system components and shall be used in accordance with the manufacturer’s instructions. The heat source shall be disconnected from the piping system or protected with a fine mesh strainer during flushing to prevent debris from being deposited into the heat source.

Problem Statement:

Cooling systems are added, as hydronics is not just about heating. Proposed change clarifies language about cleaning and flushing. Last sentence is deleted as this step is not necessary in all cases and should not be in the code as prescriptive language.

39

USEHC 2018 – (405.4) Item # 024





Proposed Text:

405.0 Installation, Testing, and Inspection. 405.4 Oxygen Diffusion Corrosion. PEX, and PE-RT, and PB tubing in closed hydronic systems shall contain an oxygen barrier. Exception: Closed hydronic systems without ferrous components in contact with the hydronic fluid.

Problem Statement: PB is deleted as PB is not found in Table 408.1 nor is it commercially available in the U.S. The exception is necessary as systems without ferrous materials are not impacted by oxygen diffusion through tubing.

40

USEHC 2108 – (406.3) Item # 025





Proposed Text:

406.0 Heating Appliances and Equipment. 406.3 Dual-Purpose Water Heaters. Water heaters used for combined space- and water-heating applications shall be in accordance with the standards referenced in Table 403.2, and shall be installed in accordance with the manufacturer’s installation instructions. The total heating capacity of a dual purpose water heater shall be based on the sum of the potable hot water requirements and the space heating design requirements corrected for hot water first hour draw recovery. Systems utilizing water heaters for combined space-heating and water-heating applications shall prevent introduction of hydronic water into the potable water distribution system.

Problem Statement:

Second sentence should be deleted as this is redundant with Section 403.2 which is explicitly about the capacity of the heat source. New language is intended to clearly prevent the construction of hydronic systems which share potable water with the plumbing system. Such systems have a strong potential for allowing stagnant water to be a potential breeding ground for dangerous bacteria such as Legionella, and then to reintroduce that contaminated water into the hot-water distribution system through faucets and showers. Dual purpose water heaters which separate potable water from hydronic water with internal heat exchangers will not be affected by this proposed change. Please refer to PPI Recommendation E "Recommendation Against Mixing Hydronic Heating Water with Potable Water" available here: http://www.plasticpipe.org/pdf/recommendation-e-potable-hydronic-mixing.pdf

41


USEHC 2018 – (406.5) Item # 026





Proposed Text:

406.0 Heating Appliances and Equipment. 406.5 Tankless Water Heater. Tankless water heaters used in hydronic heating systems shall be approved by the manufacturer for hydronic heating applications. The output performance of tankless water heaters shall be as rated for heating applications. Manufacturers flow rates shall not be exceeded.

Problem Statement:

This new section is needed for additional requirements for tankless heaters for hydronic applications. Not all tankless heaters are approved for heating applications, so the proposed new first sentence ensures that inappropriate tankless heaters will not be misapplied. Second sentence is revised to be appropriate to heating systems - the existing language applies to domestic water heating applications. Third sentence deleted as this applies to domestic water heating applications.

42

USEHC 2018 – (407.1) Item # 027





Proposed Text:

407.0 Expansion Tanks. 407.1 Where Required. An expansion tank shall be installed in a hydronic system to control thermal expansion. Secondary hot water systems, that are isolated from the primary system by a heat exchanger shall install a separate expansion tank and pressure relief valve. Expansion tanks shall be of the closed or open type. Expansion tanks used in hydronic systems shall be in accordance with the requirements of ASME Boiler and Pressure Vessel Code, Section VIII where the system is designed to operate at more than 30 pounds-force per square inch (psi) (207 kPa). Tanks shall be rated for the pressure of the system. Expansion tanks shall be accessible for maintenance and shall be installed in accordance with the manufacturer’s installation instructions. 407.1 General. An expansion tank shall be installed in each closed hydronic system to control system pressure due to thermal expansion and contraction. Expansion tanks shall be of the closed or open type. Expansion tanks shall be rated for the pressure of the system. 407.2 Installation. Expansion tanks shall be accessible for maintenance and shall be installed in accordance with the manufacturer's installation instructions. Each expansion tank shall be equipped with a shutoff device that will remain open during operation of the hydronic system. Valve handles shall be locked open or removed to prevent from being inadvertently shut off. Provisions shall be made for draining the tank without emptying the system. Expansion tanks shall be securely fastened to the structure. Supports shall be capable of carrying twice the weight of the tank filled with water without placing a strain on connecting piping. Hot-water-heating systems incorporating hot water tanks or fluid relief columns shall be installed to prevent freezing under normal operating conditions. (renumber remaining sections)

Problem Statement:

The revision of Section 407.1 provides general information about expansion tanks that is separated from installation requirements in the following section. The term "each closed" is being added as expansion tanks are only needed on closed hydronic systems due to thermal expansion, not on open systems. Some of the requirements of new Section 407.2 are already included in existing Section 407.1, but it is cleaner to propose this as new text rather than extensive mark-ups. This proposal is to rename and renumber Section 407.1 to focus on installation requirements, as the new Section 407.1 (proposed) already addresses where these devices are required. The revised Section 407.2 provides important installation requirements for both open and closed tanks. There is no need to distinguish between open (vented) and closed tanks with respect to installation. Their requirements are merged to reduce repetition. Both open and closed tanks require a means to drain the tank for service. For closed tanks, this is needed to adjust pre-charge in the case where it is not set at the factory. The draining requirement is relocated to apply to both types of tanks.

43

USEHC 2018 – (407.3) Item # 028





Proposed Text:

407.0 Expansion Tanks. 407.2 Systems with Closed Expansion Tanks. A closed expansion tank shall be sized based on the capacity of the system. The minimum size of the tank shall be determined in accordance with Section 605.4 and shall be equipped with an airtight tank or other air cushion that is consistent with the volume and capacity of the system. Tanks shall be equipped with a drain valve and a manual air vent. Tanks shall be located in accordance with the manufacturer’s instructions unless otherwise specified by the system design. Each tank shall be equipped with a shutoff device that will remain open during operation of the heating system. Valve handles shall be locked open or removed to prevent from being inadvertently shut off. 407.3 Closed-type Expansion Tanks. Closed-type expansion tanks shall be designed for a hydrostatic test pressure of two and one-half times the allowable working pressure of the system. Expansion tanks for systems designed to operate at more than 30 pounds-force per square inch (psi) (207 kPa) shall comply with ASME BPVC Section VIII. (renumber remaining sections)

Note: ASME BPVC Section VIII meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.

Problem Statement:

Proposed Section 407.3 (Closed-type Expansion Tanks) is a replacement for the existing Section 407.2 (Systems with Closed Expansion Tanks) language. New number following the addition of new Section 407.2 (Installation). The new name clarity. The requirement for ASME construction should be triggered based on pressure, to be consistent with ASME BPVC Section VIII. Other changes are justified by changes to Section 407.1 and Section 407.2, which apply to Open and Closed tanks.

44

USEHC 2018 – (407.4) Item # 029





Proposed Text:

407.0 Expansion Tanks. 407.3 Systems with Open Expansion Tanks. An open expansion tank shall be located not less than 36 inches (914 mm) above the highest point in the system and shall be sized based on the capacity of the system. An overflow with a diameter of not less than one-half the size of the water supply or not less than 1 inch (25 mm) in diameter shall be installed at the top of the tank. The overflow shall discharge through an air gap into the drainage system. Isolation valves shall not be installed in the piping between the heat-distribution system and the expansion tank. Tanks shall be located in accordance with the manufacturer’s instructions unless otherwise specified by the system design. Each tank shall be equipped with a shutoff device that will remain open during operation of the heating system. Valve handles shall be locked open or removed to prevent from being inadvertently shut off. 407.4 Open-Type Expansion Tanks. Open type expansion tanks shall be located not less than 3 feet (914 mm) above the highest point of the system. An overflow with a diameter of not less than one-half the size of the supply or not less than 1 inch (25 mm) in diameter shall be installed at the top of the tank. The overflow shall discharge through an air gap into the drainage system.

Problem Statement:

This is a replacement for the existing Section 407.3 language. New number following the addition of new Section 407.1. The new name adds clarity. Several requirements are moved to the new Section 407.1 so are not necessary in this section. Requirement for isolation valves contradicts requirement for "shutoff device that will remain open during operation of the hydronic system." as per the new Section 407.2.

45

USEHC 2018 – (407.5) Item # 030





Proposed Text:

407.0 Expansion Tanks. 407.5 Sizing. Expansion tanks shall be sized to accept the full expansion volume of the fluid in the system.

Problem Statement: The addition of this new section provides sizing requirements that apply to open and closed systems.

46

USEHC 2018 – (408.1) Item # 031





Proposed Text:

408.0 Materials. 408.1 Pipe, Tube, Tubing and Fittings. Hydronic pipe and tubing shall comply with the applicable standards referenced in Table 408.1 and shall be approved for use based on the intended purpose. Materials shall be rated for the operating temperature and pressure of the system and shall be compatible with the type of heat transfer fluid medium. Pipe fittings and valves shall be approved for the installation with the piping, materials to be installed and shall comply with the applicable standards referenced in Table 408.1. Where required, Eexterior piping shall be protected against freezing, UV radiation, corrosion and degradation. Embedded pipe or tubing shall comply with Section 417.2.

Problem Statement:

The term "medium" is being revised to "fluid" for consistency with language used in other sections of this code, other codes, trades and with the definition of "hydronics." The requirement regarding protection of exterior piping and corrosion protection is too encompassing, as many pipes do not need such protection, whether due to inherent resistance to the elements or geographical location. The existing language could be used to require protection when none is needed, increasing costs needlessly. The proposed language allows for common sense to dictate when such specific protection is required.

47

USEHC 2018 – (Table 408.1) Item # 032



Recommendation: Delete text without substitution

Section Number: Table 408.1

Proposed Text:

TABLE 408.1 MATERIALS FOR HYDRONICS AND SOLAR THERMAL SYSTEM PIPING,

TUBING, AND FITTINGS MATERIAL STANDARDS

PIPING/TUBING FITTINGS Acrylonitrile Butadiene Styrene (ABS) ASTM D1527 ––

(portions of table not shown remain unchanged)

Problem Statement:

The material ABS does not belong in this Table for hydronics, as there is no reference to this material within Ch. 4 Hydronics. Further, the reference standard ASTM D1527 no longer exists. According to the ASTM website, "Formerly under the jurisdiction of Committee F17 on Plastic Piping Systems, this specification was withdrawn in November 2013. This standard is being withdrawn without replacement due to its limited use by industry."

48

USEHC 2018 – (Table 408.1) Item # 033





Proposed Text:



PIPING/TUBING FITTINGS Cross-Linked Polyethylene (PEX)

ASTM F876, ASTM F877, CSA B137.5

ASSE 1061, ASTM F877, ASTM F1807, ASTM F1960, ASTM F1961, ASTM F2080, ASTM F2159, ASTM F2735, CSA B137.5


Problem Statement:

ASTM F877 was revised in 2011 to serve as the standard for PEX system components, including fittings and manifolds for PEX tubing, but it is not a standard for PEX tubing. The single standard which contains all technical requirements for PEX tubing is ASTM F876, which is also listed in the 1st column. ASTM F876 was revised in 2010 to contain all requirements for PEX tubing, in one standard. Therefore, it is incorrect to list ASTM F877 in the 2nd column for "PIPING/TUBING". It is correct to list ASTM F877 in the 3rd column "FITTINGS". It should remain in this column. ASTM F877 will remain in the table under the heading "Fittings".

49

USEHC 2018 – (Table 408.1) Item # 034





Proposed Text:



PIPING/TUBING FITTINGS Ductile Iron AWWA C115, AWWA C151 AWWA C110, AWWA C153

Notes: 1 Ductile and gray iron. 21Only Type K, L, or M shall be permitted to be installed.


Problem Statement:

These materials do not belong in this Table for hydronics. Ductile Iron pipe produced to AWWA (American Water Works Association) standards is not used in hydronic systems. For example, the Scope of C151 starts with "This standard describes 3-in. through 64-in. (80-mm through 1,600-mm) flanged ductile-iron pipe with ductile-iron or gray-iron threaded flanges for potable water, wastewater, and reclaimed water service"

50

USEHC 2018 – (Table 408.1) Item # 035





Proposed Text:

TABLE 408.1

MATERIALS FOR HYDRONICS AND SOLAR THERMAL SYSTEM PIPING, TUBING, AND FITTINGS

MATERIAL STANDARDS

PIPING/TUBING FITTINGS

Polyethylene (PE)

ASTM D1693, ASTM D2513, ASTM D2683, ASTM D2837, ASTM D3035, ASTM D3350, ASTM F1055, CSA B137.1

ASTM D2609, ASTM D2683, ASTM D3261, ASTM F1055, CSA B137.1


Problem Statement: Delete ASTM F1055 from PE Piping/Tubing in the second column, as this is a standard for electrofusion fittings for PE and PEX. F1055 should remain in the third column as a standard for PE fittings.

51

USEHC 2018 – (408.3) Item # 036





Proposed Text:

408.0 Materials. 408.3 Hangers and Supports. Pipe and tubing shall be supported in accordance with Section 317.0 and Table 317.3. Systems with valves, circulators, and expansion tanks Equipment that is part of the piping system shall be provided with additional support in accordance with this code and manufacturer’s installation instructions.

Problem Statement:

Specific requirements are found in Section 317.0, which also refers to Table 317.3. Therefore, both should be referenced here. The current list of equipment in Section 408.3 that may require added supported is incomplete. Therefore, the proposed sentence is made to be more generic and inclusive.

52

USEHC 2018 – (409.2) Item # 037





Proposed Text:

409.0 Joints and Connections. 409.2 Chlorinated Polyvinyl Chloride (CPVC) Pipe. Joints between chlorinated polyvinyl chloride (CPVC) pipe and fittings shall be installed in accordance with one of the following methods: (1) Mechanical joints shall include flanged, grooved, and push fit fittings. Removable

and nonremovable push fit fittings with an elastomeric o-ring that employ quick assembly push fit connectors shall be in accordance with ASSE 1061.

(2) Solvent cement joints for CPVC pipe and fittings shall be clean from dirt and moisture. Solvent cements in accordance with ASTM F493, requiring the use of a primer shall be orange in color. The primer shall be colored and be in accordance with ASTM F656. Listed solvent cement in accordance with ASTM F493 that does not require the use of primers, yellow or red in color, shall be permitted for pipe and fittings manufactured in accordance with ASTM D2846, 1⁄2 of an inch (15 mm) through 2 inches (50 mm) in diameter or ASTM F442, 1⁄2 of an inch (15 mm) through 3 inches (80 mm) in diameter. Apply primer where required inside the fitting and to the depth of the fitting on pipe. Apply liberal coat of cement to the outside surface of pipe to depth of fitting and inside of fitting. Place pipe inside fitting to forcefully bottom the pipe in the socket and hold together until joint is set.

(3) Threaded joints for CPVC pipe shall be made with pipe threads in accordance with ASME B1.20.1. A minimum of Schedule 80 shall be permitted to be threaded and the pressure rating shall be reduced by 50 percent. The use of molded fittings shall not result in a 50 percent reduction in the pressure rating of the pipe provided that the molded fittings shall be fabricated so that the wall thickness of the material is maintained at the threads. Thread sealant compound that is compatible with the pipe and fitting, insoluble in water, and nontoxic shall be applied to male threads. Caution shall be used during assembly to prevent over tightening of the CPVC components once the thread sealant has been applied. Female CPVC threaded fittings shall be used with plastic male threads only.

Problem Statement: Section 409.2(1) is being revised to add mechanical joints, commonly used with CPVC pipe in the field, that have a proven track record.

53

USEHC 2018 – (409.3, Table 408.1, Table 1001.1) Item # 038




Section Number: 409.3, Table 408.1, Table 1001.1

Proposed Text:

TABLE 408.1 MATERIALS FOR HYDRONIC AND SOLAR THERMAL SYSTEM, PIPING, TUBING, AND FITTINGS

MATERIAL STANDARDS PIPING/TUBING FITTINGS

Chlorinated Polyvinyl Chloride/Aluminum/ Chlorinated Polyvinyl Chloride (CPVC/AL/CPVC)

ASTM F2855 ASTM D2846

(portions of table not shown remain unchanged) 409.0 Joints and Connections. 409.3 CPVC/AL/CPVC Plastic Pipe and Joints. Joints between chlorinated polyvinyl chloride/aluminum/ chlorinated polyvinyl chloride (CPVC/AL/CPVC) pipe or fittings shall be installed in accordance with one of the following methods: (1) Mechanical joints shall include flanged and grooved. (2) Solvent cement joints for CPVC/AL/CPVC pipe and fittings shall be clean from dirt and

moisture. Solvent cements in accordance with ASTM F493, requiring the use of a primer shall be orange in color. The primer shall be colored and be in accordance with ASTM F656. Listed solvent cement in accordance with ASTM F493 that does not require the use of primers, yellow in color, shall be permitted for pipe and fittings manufactured in accordance with ASTM D2846, 1/2 inch (15 mm) through 2 inches (50 mm) in diameter, 1/2 inch (15 mm) through 3 inches (80 mm) in diameter. Apply primer where required inside the fitting and to the depth of the fitting on pipe. Apply liberal coat of cement to the outside surface of pipe to depth of fitting and inside of fitting. Place pipe inside fitting to forcefully bottom the pipe in the socket and hold together until joint is set.

(renumber remaining sections)

TABLE 1001.1 REFERENCED STANDARDS

STANDARD NUMBER STANDARD TITLE APPLICATION REFERENCE

D SECTION ASTM F2855-2012*

Specification for Chlorinated Poly (Vinyl Chloride)/Aluminum/Chlorinated Poly (Vinyl Chloride) (CPVC-AL-CPVC) Composite Pressure Tubing


(portions of table not shown remain unchanged) Note: ASTM D2846, ASTM F493, ASTM F656 and ASTM F2855 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.

Problem Statement:

Chlorinated Polyvinyl Chloride/Aluminum/ Chlorinated Polyvinyl Chloride (CPVC/AL/CPVC) pipe was added to chapter 6 of the UPC last cycle for water

54

USEHC 2018 – (409.3, Table 408.1, Table 1001.1) Item # 038

service and water distribution pipe. It can also be used for hydronic piping and should be recognized in Chapter 4 of the USEHC to give installers another option. Adding new Section 409.3 adds joining methods commonly used with CPVC-AL-CPVC pipe in the field that have a proven track record.

55

USEHC 2018 – (409.6, Table 408.1) Item # 039




Section Number: 409.6, Table 408.1

Proposed Text:


TUBING, AND FITTINGS

MATERIAL STANDARDS PIPING/TUBING FITTINGS

Ductile Iron AWWA C115, AWWA C151 AWWA C1101, AWWA C153

Notes: 1 Ductile and gray iron. 21 Only Type K, L, or M shall be permitted to be installed.

(portions of table not shown remain unchanged) 409.0 Joints and Connections. 409.6 Ductile Iron Pipe. Joints between ductile iron pipe and fittings shall be installed in accordance with one of the following methods: (1) Mechanical joints for ductile iron pipe or fittings shall consist of a bell that is cast

integrally with the pipe or fitting and provided with an exterior flange having bolt holes and a socket with annular recesses for the sealing gasket and the plain end of the pipe or fitting. The elastomeric gasket shall comply with AWWA C111. Lubricant recommended for the application by the pipe manufacturer shall be applied to the gasket and plain end of the pipe.

(2) Push-on joints for ductile iron pipe or fittings shall consist of a single elastomeric gasket that shall be assembled by positioning the elastomeric gasket in an annular recess in the pipe or fitting socket and forcing the plain end of the pipe or fitting into the socket. The plain end shall compress the elastomeric gasket to form a positive seal and shall be designed so that the elastomeric gasket shall be locked in place against displacement. The elastomeric gasket shall comply with AWWA C111. Lubricant recommended for the application by the pipe manufacturer shall be applied to the gasket and plain end of the pipe.


Problem Statement:

This material does not belong in this Table for hydronics. Ductile Iron pipe produced to AWWA (American Water Works Association) standards is not used in hydronic systems. For example, the Scope of C151 starts with "This standard describes 3-in. through 64-in. (80-mm through 1,600-mm) flanged ductile-iron pipe with ductile-iron or gray-iron threaded flanges for potable water, wastewater, and reclaimed water service"

56

USEHC 2018 – (409.13) Item # 040





Proposed Text:

409.0 Joints and Connections. 409.13 Joints Between Various Materials. Joints between different various materials shall be installed in accordance with the manufacturer’s installation instructions and shall comply with Section 409.13.1 and Section 409.13.2.

Problem Statement: Existing word "various" to be replaced with "different" as that is the intended subject of this requirement. "Various" means anything and does not imply "different".

57

USEHC 2018 – (410.2) Item # 041





Proposed Text:

410.0 System Controls. 410.2 Radiant Floor Heating Panels. Radiant floor heating panels shall be protected with a high-limit control set 20°F (11°C) above the maximum design water temperature for the panel to prevent the introduction of heat into the panel. The high-limit setting shall not exceed the temperature rating for the pipe and shall be equipped with a manual reset.

Problem Statement:

Section 410.2 should be deleted as it is not specific in regards to the location that the high-limit control device is to be installed, or what is to be controlled (pumps or heat source). Therefore, this section is unenforceable. Further, it makes no sense to allow heating fluid to reach 20°F above the maximum that is allowed, as this could damage flooring materials.

58

USEHC 2018 – (410.4) Item # 042





Proposed Text:

410.0 System Controls. 410.4 Occupied Spaces. An air-temperature-sensing device shall be installed in the occupied space to regulate the operation of the hydronic heat-distribution system.

Problem Statement: Since this chapter is about all types of hydronic systems, this requirement should be revised to apply to not just heating systems.

59

USEHC 2018 – (410.5) Item # 043





Proposed Text:

410.0 System Controls. 410.5 Return-Water Low-Temperature Protection. Where a minimum return-water temperature to the heat source is specified by the manufacturer, the heating system shall be designed and installed to meet or exceed to ensure that the minimum return-water temperature is maintained during the normal operation of the heat source.

Problem Statement: Although not intended, the current language forces heat sources to run only at the minimum return water temperature. The proposed language corrects this error with slight revisions to the text.

60

USEHC 2018 – (411.4) Item # 044





Proposed Text:

411.0 Pressure and Flow Controls. 411.4 Automatic Makeup Water. Where an automatic makeup water or fluid supply fill device is used to maintain the fluid water content of the heat-source unit, or any closed loop in the system, the makeup supply shall be located at the expansion tank connection or other approved location.

A pressure-reducing valve shall be installed on the makeup water feed line. The pressure of the feed line shall be set in accordance with the design of the system, and connections to potable water shall be in accordance with Section 402.0 to prevent contamination due to backflow.

Problem Statement:

Section 411.4 is being revised as there are other locations where a makeup water supply fi "flll device can be installed. Termuid" is added selectively, as many hydronic systems are using mixtures including antifreeze, corrosion inhibitors, etc. and not strictly water.

61

USEHC 2018 – (411.4) Item # 045

Name: Kirk Nagus

Representing: Axiom Industries Ltd.



Proposed Text:

411.0 Pressure and Flow Controls. 411.4 Automatic Makeup Water. Where an automatic makeup water supply fill device is used to maintain the water content of the heat-source unit, or any closed loop in the system, the makeup supply shall be located at the expansion tank connection.

On systems using only water as a heat transfer medium, and where pressurization is achieved using a potable water supply, aA pressure-reducing valve shall be installed on the makeup water feed line. The pressure of the feed line shall be set in accordance with the design of the system, and connections to potable water shall be in accordance with Section 402.0 to prevent contamination due to backflow.

On systems using additives, such as glycol or corrosion inhibitors, the use of a system pressurization unit (also known as a glycol feeder) shall be required, in order to (1) guarantee that there is no backflow of chemicals into the potable water line; (2) provide flood protection; and (3) regulate system pressure.

Problem Statement:

The use of system pressurization units, or glycol feeders, guarantees that there is no connection between the potable water line and system fluid. In an ordinary backflow prevention setup, protection of potable water is dependent only on mechanical components such as backflow preventers and pressure reducing valves. If these fail, then there is a direct connection between potable water and system fluid. The use of a glycol feeder ensures that there exists no connection between system fluid and the potable water line. The system pressurization unit regulates the pressure in the system and automatically pumps in system fluid when necessary, directly from the feed tank, without any connection to the water line. System feeders also provide flood protection. If a leak occurs, only the contents of the tank can be pumped out, rather than unrestricted flow, as would occur with a potable water make-up supply that was not isolated. If the PRV is installed as per the manufacturer's recommendations (make-up water isolated), then it is not automatic. It becomes a manual operation. Also, using a system feeder allows you to ensure a compatible fluid is used for make-up requirements. The use of system feeders has gained wide acceptance over the last 15 years, and it is now common practice in the US and Canada. There exist several competing companies who make these sorts of products in all sizes required for hydronic systems.

62

USEHC 2018 – (411.5) Item # 046





Proposed Text:

411.0 Pressure and Flow Controls. 411.5 Differential Pressure Regulation. Provisions shall be made to control bypass excessive zone flows in a multi-zone hydronic system where the closing of some or all of the two-way zone valves is capable of excess flow through the open zones or deadheading of a fixed-speed circulator or pump.

Problem Statement:

The proposed language makes it more obvious as to the purpose of the differential pressure regulation device. The existing term "control" is too vague so the proposed language is more descriptive. The terms circulator and pump are somewhat synonymous, though different manufacturers apply these terms to devices of various sizes in an inconsistent manner. In other words, what one manufactures might call a "pump" another calls a circulator. Proposed language is inclusive of both terms to prevent confusion about which devices are covered by this section.

63

USEHC 2018 – (411.5.1) Item # 047





Proposed Text:

411.0 Pressure and Flow Controls. 411.5.1 Differential Pressure Bypass Valve. Where a differential pressure bypass valve is used for the purpose specified in accordance with Section 411.5, it shall be installed and adjusted to provide bypass of the distribution system where when most or all of the zones are closed.

Problem Statement:

The existing language is not adequate direction as to proper adjustment of a differential pressure regulation device, and may result in such valves being left adjusted incorrectly, since the phrase "where the zones are closed" could refer to all of the zones or just some of them. As a result, this language causes problems with enforceability. The proposed language provides a technically improved direction about adjusting such valves correctly, and is specifically enforceable. Harmonized with the latest CSA B214.

64

USEHC 2018 – (411.6) Item # 048





Proposed Text:

411.0 Pressure and Flow Controls. 411.6 Air-Removal Device. Provision shall be made for the removal of air in the heat-distribution piping system from fluid in hydronic systems. The aAir-removal devices shall be located in the areas of the heat-distribution piping system where air is likely to accumulates. Air-removal devices shall be installed to facilitate their removal for examination, repair, or replacement.

Problem Statement:

The existing language is specific just to heating systems, whereas all hydronic systems need these devices. Revised language solves this problem. The addition of "is likely to" is an important clarification, as the existing language could be applied to anywhere in a hydronic system.

65

USEHC 2018 – (411.7) Item # 049





Proposed Text:

411.0 Pressure and Flow Controls. 411.7 Air-Separation Device. To assist with the removal of entrained air, Aan air-separation device shall be installed in hydronic systems. on a closed heat-distribution system. The device shall be located in accordance with the manufacturer’s installation instructions or at the point of no mechanically-induced pressure change within the heat-distribution system. where there is no pressure change and the water in the heat-distribution system is at the highest temperature.

Problem Statement:

There exists confusion as to what is meant by an "air-separation device" versus an air-removal device, so the additional words added at the beginning of this section are intended to clarify its purpose. The existing language is specific just to heating systems, whereas all hydronic systems need these devices. Revised language solves this problem. The term "point of no mechanically-induced pressure change" is understood in the hydronics trade, so wording is revised to use this terminology. Air removal devices need not be installed at the location of highest temperature to be effective, and for cooling systems this location is far from the mechanical room, so the last part of the last sentence is stricken.

66

USEHC 2018 – (411.8) Item # 050





Proposed Text:

411.0 Pressure and Flow Controls. 411.8 Secondary Loops. Secondary loops that are isolated from the primary heat-distribution loop by a heat exchanger are closed-loop hydronic systems and shall have an expansion tank in accordance with Section 407.0, an air-removal device in accordance with Section 411.6, and or an air-separation device in accordance with Section 411.6 or Section 411.7.

Problem Statement:

Wording is revised enough to show the entire section as new, whereas much of the content was existing but is modified. New wording improves technical requirements for secondary systems, which are really independent hydronic systems.

67

USEHC 2018 – (412.3) Item # 051





Proposed Text:

412.0 Hydronic Space Heating. 412.3 Freeze Protection. Hydronic heat-distribution units or other systems and components shall be designed, installed, and protected from freezing.

Problem Statement: The existing language is specific just to heating systems, whereas all hydronic systems need this consideration. Revised language solves this problem.

68

USEHC 2018 – (412.5) Item # 052





Proposed Text:

412.0 Hydronic Space Heating. 412.5 Heat Transfer Fluid Medium. The ignitable flash point of heat transfer fluid in a hydronic piping system shall be a minimum of 50°F (28°C) above the maximum system operating temperature in accordance with Section 501.15. The heat transfer fluid shall be compatible with the makeup fluid supplied to the system.

Problem Statement:

The term "medium" is being revised to "fluid" for consistency with language used in other sections of this code, other codes, the trades and with the definition of "hydronics." Word "ignitable" is added to differentiate from other types of flash points, such as boiling or vapor, and to more accurately address the safety concern of this section. No need to reference Section 501.15 here as that is a redundant requirement in a different section related to solar.

69

USEHC 2018 – (413.2, 413.3) Item # 053




Section Number: 413.2, 413.3

Proposed Text:

413.0 Steam Systems. 413.2 Sloping for Two-Pipe System. Two-pipe steam system piping and heat-distribution units shall be sloped down at a minimum 1⁄8 inch per foot (10.4 mm/m) in the direction of the steam flow. 413.3 Sloping for One-Pipe System. One-pipe steam system piping and heat-distribution units shall be sloped down at a minimum 1⁄8 inch per foot (10.4 mm/m) towards the steam boiler, without trapping.

Problem Statement: Revised language allows some freedom for designers and installers while still meeting the minimum slope requirement, which is what's critical. "10.4 mm/m" is too precise, so "10 mm/m" is a better conversion.

70

USEHC 2018 – (413.4) Item # 054





Proposed Text:

413.0 Steam Systems. 413.4 Automatic Air Vents. Steam automatic air vents shall be installed to eliminate air pressure in heat-distribution units on gravity steam piping systems. Steam traps shall be installed on pump and receiver condensate systems to eliminate negative pressures in coils and heat exchangers on a low-pressure steam system. Air vents shall not be used on a vacuum system.

Problem Statement:

Section 413.4 creates confusion as it seems to be mixing up the functions of steam traps with those of vacuum breakers. You can get steam traps with vacuum breaker valve options but the basic function of a steam trap does not achieve the intent of letting air back into a system. Therefore, the second sentence should be deleted to avoid confusion.

71

USEHC 2018 – (413.5) Item # 055





Proposed Text:

413.0 Steam Systems. 413.5 Condensate Flow. System piping shall be installed to allow condensate to flow from the steam trap to the condensate tank receiver or steam boiler, either by gravity or pump-assisted.

Problem Statement:

The requirements in Section 413.5 do not say anything substantive with or without the proposed modifications. However, the modifications makes the provisions more general, e.g. for one-pipe systems without traps and where gravity return is not always possible.

72

USEHC 2018 – (414.1) Item # 056

Name: Lance MacNevin, P. Eng.




Proposed Text: 414.0 Radiant Heating and Cooling. 414.1 Installation. Radiant heating and cooling systems panels shall be installed in accordance with the system design.

Problem Statement: Replacing "panel" with "system" improves clarity. The term "radiant panel" is often thought to mean wooden or metal heat transfer panels into which are inserted tubes, whereas "system" refers to all types of radiant installations.

73

USEHC 2018 – (414.2) Item # 057





Proposed Text:

414.0 Radiant Heating and Cooling. 414.2 Radiant Under-Floor Heating. Floor finished surface temperatures shall not exceed the following temperatures for space heating applications: (1) 85°F (29°C) in general occupied applications dwellings, buildings, or structures. (2) 85°F (29°C) in occupancies where prolonged foot contact with the floor, and solid

or laminated hardwood flooring. (32) 90°F (32°C) in bathrooms, foyers, distribution areas such as hallways and indoor

swimming pools. (3) 88°F (31°C) in industrial spaces (4) 95°F (35°C) in radiant panel perimeter areas, i.e., up to 2.5 feet (762 mm) from

outside walls. The radiant heating system panel temperature shall not exceed the maximum temperature rating of the materials used in its the construction. of the radiant heating panel. The radiant panel shall be protected with a high-limit control in accordance with Section 410.2.

Problem Statement:

Name change proposed to be consistent with the industry. Adding "finished" clarifies where these temperatures should be measured. Adding "for space heating" clarifies that this does not apply to other unintended applications. (1) this revision prevents the other sections from conflicting with (1). (2) should be deleted as there is no explanation what is meant by "prolonged foot contact" and this leads to much confusion. Furthermore, it is the same requirement as part (1). (3) is renumbered as (2) and has two additional floor area types added to allow areas where heating tubes are being distributed to run at slightly hotter temperatures if required. Harmonized with latest CSA B214. New (3) is added for industrial spaces, which have different heating and comfort requirements than living spaces. Harmonized with the latest CSA B214. New (4) is added for perimeter spaces, which have different comfort requirements than occupied spaces. Harmonized with the latest CSA B214. Replacing "panel" with "system" improves clarity. The term "radiant panel" is often thought to mean wooden or metal heat transfer panels into which are inserted tubes, whereas "system" refers to all types of radiant installations. Sentence is simplified for clarity. Final sentence is deleted as Section 410.2 is also deleted for reasons provided in that proposal.

74

USEHC 2018 – (414.3) Item # 058





Proposed Text:

414.0 Radiant Heating and Cooling. 414.3 Chilled Water Radiant Cooling Systems. Chilled water Radiant cooling systems for cooling shall be designed to minimize the potential for condensation. Chilled water piping, valves, and fittings shall be insulated and vapor sealed to prevent surface condensation. To prevent condensation on any cooled radiant surface, the supply water temperature for a radiant cooling system shall be not less than 3°F (1.7°C) above the anticipated space dew point temperature, or in accordance with the manufacturer's recommendation.

Problem Statement:

The section title and first sentence are revised for clarity about the covered applications. The additional sentence is based on proven design experience across North America in all types of occupied buildings, and this requirement will prevent condensation in buildings with radiant cooling systems.

75

USEHC 2018 – (414.4) Item # 059





Proposed Text:

414.0 Radiant Heating and Cooling. 414.4 Dehumidification. A chilled ceiling or chilled floor panels used for space cooling shall be installed in a humidity-controlled environment. An air handling device that removes humidity shall be incorporated into the system to keep the relative humidity below 70 percent. A humidity sensor shall be installed within the space to turn off the panels where the surface approaches the dew point. (renumber remaining sections)

Problem Statement:

Proposal is to delete this section since protection against condensation of radiant cooling systems is provided with new language in Section 414.3, and the existing language within Section 414.4 is not enforceable code language. Even the section title is not appropriate.

76

USEHC 2018 – (414.5, Table 414.5) Item # 060





Proposed Text:

414.0 Radiant Heating and Cooling. 414.5 Tube Placement. Hydronic radiant system panel tubing shall be installed in accordance with the manufacturer’s installation instructions and with the tube layout and spacing in accordance with the system design. Except for distribution mains, tube spacing and the individual loop lengths shall be installed with a variance of not more than ±10 percent from the design. The maximum loop length of continuous tubing from a supply-and-return manifold shall not exceed the lengths specified by in accordance with the manufacturer or, in the absence of manufacturer’s specifications, the lengths specified in accordance with Table 414.5. Actual loop lengths shall be determined by spacing, number of loops, flow rate, and pressure drop requirements in accordance with the system design.

For the purpose of system balancing, each individual loop shall have a tag securely affixed to the manifold to indicate the length of the loop and the room(s) and area(s) served.

In a single-zone multiple-manifold installation, balanced flow through manifolds shall be in accordance with Section 412.4.

TABLE 414.5

MAXIMUM LOOP LENGTHS OF CONTINUOUS TUBING FOR RADIANT SYSTEMS FROM A SUPPLY-AND-RETURN MANIFOLD ARRANGEMENT

NOMINAL TUBE SIZE (inches)

MAXIMUM LOOP LENGTH (feet)

1⁄4 125 5⁄16 200 3⁄8 250 1⁄2 300 5⁄8 400 3⁄4 500 1 750

For SI units: 1 inch = 25.4 mm, 1 foot = 304.8 mm

Problem Statement:

Replacing "panel" with "system" improves clarity. The term "radiant panel" is often thought to mean wooden or metal heat transfer panels into which are inserted tubes, whereas "system" refers to all types of radiant installations. Additional requirement in 1st sentence is copied from 416.3.1. New second sentence is copied from 416.3.1 and also applies to radiant systems. Existing second sentence is reworded for clarity. "number of loops" has nothing to do with loop lengths for the purposes of this section. Deletion of last sentence is necessary as this sentence is confusing and unenforceable, and Section 412.4 already requires systems to be properly balanced. Proposed title change is more descriptive of the application for this table using common industry terminology

77

USEHC 2018 – (414.6) Item # 061





Proposed Text:

414.0 Radiant Heating and Cooling. 414.6 Poured Floor Structural Concrete Slab Systems (Thermal Mass). Where tubing is embedded in a structural concrete slab, such tubes shall not be larger in outside dimension than one-third of the overall thickness of the slab and shall be spaced not less than three six diameters on center except within 10 feet (3048 mm) of the distribution manifold. The top of the tubing shall be embedded in the slab not less than 2 inches (51 mm) below the surface of the finished concrete slab.

Problem Statement:

Term "thermal mass" can be confusing without a definition and does not change that this section is about poured concrete slabs, whose primary purpose is as the floor structure, so it should be deleted. The allowance of tubing to be within three pipe diameters of each other allows ½" nominal tubing to be at 1.88 inches on center, an extremely tight and problematic spacing for both the concrete strength and the tubing. The proposed revision to "six diameters" would allow ½" nominal tubing to be at 3.75 inches on center or ¾" nominal tubing to be 5.25 inches on center, meeting the needs of the most demanding radiant systems without displacing too much concrete. An exception is added for tubing near the manifold, as tubing connections at manifolds are general at 2 inch on center, so that in the floor nearest the manifold the spacing must be tight. The 10 foot exception is necessary for the tubes to spread out as they leave the manifold area. Final words are added to improve clarity of the surface that is referred.

78

USEHC 2018 – (414.6.1) Item # 062





Proposed Text:

414.0 Radiant Heating and Cooling. 414.6.1 Slab Penetration Tube and Joint Protection. Where embedded in or installed under a concrete slab, tubing shall be protected from damage at penetrations of the slab with a protective sleeving approved by the tubing manufacturer pipe sleeve. The space between the tubing and sleeve shall be sealed with an approved sealant compatible with the tubing. The tubing at the location of an expansion joint in a concrete slab shall be encased in a protective pipe sleeve sleeving that covers the tubing not less than 12 inches (305 mm) on either side of the expansion joint or the tubing shall be installed below the slab.

Problem Statement:

It's not clear what is meant by a "pipe sleeve", so the revised wording refers to the tubing manufacturer for guidance. It is important that the product used to seal between tubing and sleeving is compatible with the tubing, so a requirement is added to ensure that compatibility.

79

USEHC 2018 – (414.6.2) Item # 063





Proposed Text:

414.0 Radiant Heating and Cooling. 414.6.2 Insulation. Where a poured concrete radiant floor system is installed in contact with the soil, insulation approved for such an application with a minimum R-value of 5 not less than R-5 insulation shall be installed and shall be placed between the compacted soil and the concrete; extend to the outside edges of the concrete; and be placed on all slab edges.

Where a poured concrete radiant floor system is installed on grade, not less than R-5 insulation shall be installed and placed on vertical slab edges.

Where a poured concrete radiant floor system is installed within a habitable space above and below, the total R-value of the floor system below the concrete slab shall be more than the total R-value of the material lying above the concrete slab and the floor system shall have not less than a R-3 value.

Problem Statement:

Proposal ensures that only appropriate insulation materials for use on soils and under concrete will be used in snow and ice melt systems. First paragraph is reworded for clarity. The second paragraph should be deleted because the first paragraph already applies to slab-on-grade construction. Further, the existing wording can be interpreted to mean that insulation between the soil and the concrete is not required in slab-on-grade applications. The third paragraph is not needed as there is no reason for such requirement. Many radiant systems are designed for heat transfer in both directions to and from the poured floor, but the existing language would prevent that.

80

USEHC 2018 – (414.6.2) Item # 064





Proposed Text:

414.0 Radiant Heating and Cooling. 414.6.2 Types of Tube Fasteners. Tubing that is embedded within concrete shall be fastened according to manufacturer's instructions. Unless prohibited by manufacturer's instructions, approved tube fasteners include the following: (1) Ties made of wire, typically fastened to anchors such as rebar or wire mesh; (2) Plastic tube/cable ties, typically nylon, fastened to anchors such as rebar or wire

mesh; (3) Staples made of metal or plastic or combination thereof, without sharp edges that

would harm tube, fastened to insulation or subfloor; (4) Plastic rails with integrated tube holders intended for the specific type of tube; (5) Insulation sheets with integrated knobs for holding the specific type of tube and

intended for this application. (renumber remaining sections)

Problem Statement:

This new section provides missing guidance to installers and inspectors about approved type of tube fasteners. The specific language was reached through consensus with the CSA B214 technical committee and will be in the next edition of CSA B214.

81

USEHC 2018 – (414.6.3) Item # 065





Proposed Text:

414.0 Radiant Heating and Cooling.

414.6.3 Spacing of Tube Fasteners. The maximum spacing between tube fasteners within a concrete floor shall not exceed the spacing specified by the manufacturer or, in the absence of manufacturer's specifications, 2.5 feet (762 mm).

Problem Statement:

This new section provides missing guidance to installers and inspectors about spacing of tube fasteners. The specific language was reached through consensus with the CSA B214 technical committee and will be in the next edition of B214.

82

USEHC 2018 – (414.7) Item # 066





Proposed Text:

414.0 Radiant Heating and Cooling. 414.7 Joist Systems and Subfloors. Where tubing is installed below a subfloor, the tube spacing shall be in accordance with the system design and joist space limitations.

Where tubing is installed above or in the subfloor, the tube spacing shall not exceed 12 inches (305 mm) center-to-center for living areas.

Where tubing is installed in the joist cavity, the cavity shall be insulated with not less than R-12 material below the heated space.

An air space of not less than 1 inch (25.4 mm) and not more than 3 inches (76 mm) 2 inches (51 mm) shall be maintained between the top of the insulation and the underside of the floor unless a conductive plate is installed in accordance with manufacturer's instructions.

Where tubing is installed in panels above or in the subfloor and not embedded in concrete, the floor assembly shall be insulated with not less than R-5 12 material below the tubing tubing when installed over habitable space.

Problem Statement:

Clarification is added about location of R-12 insulation. The existing allowed dimension of the air space (2 inches) is inappropriate and not always possible considering various construction types. Many radiant systems successfully use an air space of just 1 inch. Conversely, a maximum air space must also be specified, as an air space more than 3 inches will degrade system performance. Therefore, a tolerance range is added. When dealing with conductive plates, correct installation is very important, so "in accordance with manufacturer's instructions" is added. Final paragraph is clarified by adding "in panels" and minimum insulation value is changed from R-12 to R-5 for use over habitable space. This is consistent with other codes and common practice. Construction codes already define required insulation under a floor over uninhabited (cold) space, so no need to mention that here.

83

USEHC 2018 – (414.8) Item # 067





Proposed Text:

414.0 Radiant Heating and Cooling. 414.8 Wall and Ceiling Panels. Where piping is installed in the wall stud cavity or the ceiling joist cavity, the cavity shall be insulated with material having an R-value of not less than R-5.12 material. The insulation shall be installed in such a manner as to prevent heating or cooling from being lost from the space intended to be controlled.

An air space of not less than 2 inches (51 mm) shall be maintained between the insulation and the interior surface of the panel unless a conductive plate is installed.

Problem Statement:

Minimum insulation value for walls and ceilings is changed from R-12 to R-5, as this application is for interior walls and ceilings without exterior exposure. Construction codes already define required insulation for exterior walls and ceilings, so no need to mention that here. Second paragraph must be deleted since i) obviously the purpose of insulation is to reduce heat transfer but ii) "prevent" is an absolute, and no amount of insulation will veer "prevent" heat transfer; it simply reduces heat transfer inherently, without being told to do so. Third paragraph must be deleted as it does not make sense. There is no reason why insulation cannot touch the back of the panel and it commonly does. Perhaps this was copied from 414.7 at one time.

84

USEHC 2018 – (414.8) Item # 068





Proposed Text:

414.0 Radiant Heating and Cooling. 414.8 Tubing Fasteners. Tubing that is installed within joist spaces and subfloor panel systems shall be fastened according to manufacturer's instructions. Unless prohibited by manufacturer's instructions, approved tubing fasteners shall include the following: (1) Heat transfer panel systems made of wood, aluminum or other thermally

conductive materials intended for this application and the specific type of tube; (2) Staples made of metal or plastic or combination thereof, without sharp edges that

would harm tube, intended for this application and the specific type of tube fastened to subfloor; and

(3) Plastic rails with integrated tube holders intended for the specific type of tube.

Problem Statement:

This new section provides missing guidance to installers and inspectors about tubing fasteners for joist systems and subfloors. The specific language was reached through consensus with the CSA B214 technical committee and will be in the next edition of B214.

85

USEHC 2018 – (414.9) Item # 069





Proposed Text:

414.0 Radiant Heating and Cooling. 414.9 Radiant Heating and Cooling Panels. Radiant heating and cooling panels shall be installed in accordance with the manufacturer’s installation instructions and shall be listed for the application.

Problem Statement: There are no "listing" programs for radiant panels, so this requirement must be deleted.

86

USEHC 2018 – (414.9.1) Item # 070





Proposed Text:

414.0 Radiant Heating and Cooling. 414.9.1 Electric Heating Panel Systems. Clearances for electric heating panels or between outlets, junction boxes, mounting luminaries, ventilating, or other openings shall comply with NFPA 70.

Problem Statement: Electric Heating Panel Systems are electrical resistance heating systems constructed of grids of wires. This chapter is about hydronic systems. Electrical systems are not in the scope, so this section should be deleted.

87

USEHC 2018 – (414.9.2) Item # 071





Proposed Text:

414.0 Radiant Heating and Cooling. 414.9.2 Radiant Wall and Ceiling Panels. Radiant panels attached to wood, steel, masonry, or concrete framing members shall be fastened by means of anchors, bolts, or approved expansion screws of sufficient size and anchorage to support the loads applied. In high moisture areas, pPanels shall be installed with corrosion-resistant fasteners. Piping systems shall be designed for thermal expansion to prevent the load being transmitted to the panel.

Problem Statement:

Term "expansion screws" applies to a very specific type of fastener already covered by "anchor", so the word "expansion" should be deleted to allow various types of screws. "High moisture area" is not defined and will lead to confusion, so by deleting this phrase the remaining requirement is for fasteners to be resistant to corrosion in their environment.

88

USEHC 2018 – (416.1) Item # 072





Proposed Text:

416.0 Auxiliary Systems. 416.1 General. Additional heating loads shall be sized in accordance with one of the following methods and the required additional capacity shall be added to the primary heat source: (1) Methods included in this chapter. (2) Other approved engineering methods acceptable to the Authority Having

Jurisdiction. (3) Sizing guidelines included in the manufacturer’s instructions.

Where an auxiliary system is deemed to be in use only in seasons other than winter, it shall not be required to be combined with the space heating requirement in the winter. The heat source shall be sized to the level of the highest total seasonal load.


Problem Statement: Section 416.1 should be deleted as there is nothing substantive or enforceable.

89

USEHC 2018 – (416.2) Item # 073





Proposed Text:

416.0 Auxiliary Systems. 416.2 Use of Chemical Additives and Corrosive Fluids. Where auxiliary systems contain chemical additives, corrosive fluids, or both not intended or designed for use in the primary system, a double wall heat exchanger shall be used in accordance with Section 313.1. The chemical additives in the auxiliary systems shall be compatible with auxiliary system components and accepted for use by the heat exchanger manufacturer. (renumber remaining sections)

Problem Statement:

Requirements for heat exchangers and protecting potable water are already addressed in various sections of this Code, including Section 313.1 (General) as well as the plumbing codes. The proposal is to delete Section 416.2, as its contents are redundant and potentially confusing.

90

USEHC 2018 – (416.3) Item # 074





Proposed Text:

416.0 Snow and Ice Melt Auxiliary Systems. 416.3 Snow and Ice Melt Controls. An automatic thermostatically operating control device that controls the supply hydronic fluid solution temperature to the snow and ice melt area shall be installed in the system. A means shall be provided to prevent low return hydronic solution temperature in accordance with Section 410.5. Snow melt auxiliary systems shall be protected from freezing with an approved hydronic solution. The circulating heat transfer fluid shall be a mixture of propylene glycol or ethylene glycol and water. Snow and ice melt systems shall be protected from freezing with a mixture of propylene glycol or ethylene glycol, and water or other approved fluid. Automotive antifreeze shall not be used.

Problem Statement:

Snow melt systems are designed to also melt ice, so this element is added throughout. The section is about controls, so that word is added to the section title. As submitted in other sections, "fluid" is the preferred term to "medium" or "solution" and is consistent with other parts of this code and other codes. Sentences 3, 4 and 5 are combined into a revised third sentence for clarity.

91

USEHC 2018 – (416.3.1) Item # 075





Proposed Text:

416.0 Auxiliary Systems. 416.3.1 Tube Placement. Snow and ice melt tubing shall be installed in accordance with the manufacturer’s installation instructions and with the tube layout and spacing in accordance with the system design. Except for distribution mains, tube spacing that is shown in the design as center-to-center and the individual loop lengths shall be installed with a variance of not more than ±10 percent from the design. The maximum loop length of continuous tubing from a supply-and-return manifold arrangement shall not exceed the lengths specified by in accordance with the manufacturer installation instructions and system design or, in the absence of manufacturer’s specifications, the lengths specified in Table 416.3.1. Actual loop lengths shall be determined by spacing, flow rate, temperature, and pressure drop in accordance with the system design.

Problem Statement: Second sentence edited for clarity. Third sentence edited for clarity. The word "temperature" is being removed at the end as this does not affect loop lengths and is inconsistent with Section 414.5 (Tube Placement).

92

USEHC 2018 – (Table 416.3.1) Item # 076




Section Number: Table 416.3.1

Proposed Text:

TABLE 416.3.1 MAXIMUM LOOP LENGTHS FOR SNOW AND ICE MELT SYSTEMS1, 2

NOMINAL TUBE SIZE (inches)

MAXIMUM AVERAGE ACTIVE LOOP (feet)

TOTAL LOOP LENGTH (feet)

PE-RT or PEX Tubing 1⁄2 115 140

5⁄8 225 250

3⁄4 300 325

1 450 475

Copper Tubing3

1⁄2 – 140

3⁄4 – 280

For SI units: 1 inch = 25.4 mm, 1 foot = 304.8 mm Notes: 1. The total PE-RT or PEX loop lengths consist of two separate sections, the active loop and the

leader length. The active loop is installed within the heated slab. The leader length is the total distance to and from the manifold and heated slab, including vertical distances.

2. The manifolds shall be installed as close to the snow melts area as possible. 3. In concrete use not less than Type L copper water tubing. In bituminous pavement use a Type K

copper water tubing.

Problem Statement:

Proposed title change is more descriptive of the application for this table using common industry terminology. Column titles are changes to be more descriptive of their content. Nominal ½ inch tubing is added into the table since ½ inch tubing is the only practical solution for certain low-profile snow and ice melting systems with thin concrete pours, such as in steps or stairs with certain construction techniques. Many snow and ice melt system have been successfully constructed using ½ inch tubing, as long as the loop lengths are controlled, as per the third column. Each of these changes is harmonized with the next edition of CSA B214.

93

USEHC 2018 – (416.3.2) Item # 077





Proposed Text:

416.0 Auxiliary Systems. 416.3.2 Poured Structural Concrete Slab Systems (Thermal Mass). Where tubes are embedded in a structural concrete slab, such tubes shall not be larger in outside dimension than one-third of the overall thickness of the slab and shall be spaced not less than six three diameters on center except within 10 feet (3048 mm) of the distribution manifold. The top of the tubing shall be embedded in the slab not less than 2 inches (51 mm) below the surface of the finished concrete slab.

Problem Statement:

"Structural" is added to differentiate from overpours and to be consistent with existing Section 414.6 [Poured Floor Structural Concrete Slab Systems (Thermal Mass)]. Term "thermal mass" can be confusing without a definition and does not change that this section is about poured concrete slabs, whose primary purpose is as the outdoor surface, therefore it should be deleted. The allowance of tubing to be within three pipe diameters of each other allows ½" nominal tubing to be at 1.88 inches on center, an extremely tight and problematic spacing for both the concrete strength and the tubing. The proposed revision to "six diameters" would allow ½" nominal tubing to be at 3.75 inches on center or ¾" nominal tubing to be 5.25 inches on center, meeting the needs of the most demanding snow and ice melt systems without displacing too much concrete. An exception is added for tubing near the manifold, as tubing connections at manifolds are general at 2 inch on center, so that in the concrete nearest the manifold the spacing must be tight. The 10-foot exception is necessary for the tubes to spread out as they leave the manifold area. Final words are added to improve clarity of the surface that is referred.

94

USEHC 2018 – (416.3.3) Item # 078





Proposed Text:

416.0 Auxiliary Systems.

416.3.3 Slab Penetration Tube and Joint Protection. Where embedded in or installed under a concrete slab, tubing shall be protected from damage at penetrations of the slab with a protective sleeving approved by the tubing manufacturer pipe sleeve. The space between the tubing and sleeve shall be sealed with an approved sealant compatible with the tubing. The tubing at the location of an expansion joint in a concrete slab shall be encased in a protective pipe sleeve that covers the tubing not less than 12 inches (305 mm) on either side of the joint or the tubing shall be installed below the slab.

Problem Statement:

It is not clear what is meant by a "pipe sleeve," so the revised wording refers to the tubing manufacturer for guidance. Section 416.3.3 requires sleeving "...at the location of a joint in concrete..." not specifying whether the joint is for expansion or control, while the equivalent section for heating (Section 414.6.1) only requires sleeves for expansion joints. Adding "expansion" clarifies that sleeving is only required for those specific type of joints. It is important that the product used to seal between tubing and sleeving is compatible with the tubing, so a requirement is added to ensure that compatibility.

95

USEHC 2018 – (416.3.4) Item # 079





Proposed Text:

416.0 Auxiliary Systems. 416.3.4 Concrete Slab Preparation. A solid foundation shall be prepared before the tubing is installed. Compaction shall be used for slabs, sidewalks, and driveways.


Problem Statement: This existing section has no requirements for hydronic components, only for concrete work, which is not the scope of this code or of hydronic installers. Section 416.3.4 should be deleted.

96

USEHC 2018 – (416.3.5) Item # 080





Proposed Text:

416.0 Auxiliary Systems. 416.3.5 Insulation. Where a poured concrete snow melt system is installed in contact with the soil, insulation approved for such application with a minimum that has a R-5 value of 5 shall be placed between the concrete and the compacted grade; and be extended as close as practical to the outside edges of the concrete; and be placed on vertical slab edges that are in contact with plants or landscaping.

Problem Statement:

Proposal ensures that only appropriate insulation materials for use on soils and under concrete will be used in snow and ice melt systems. It is more efficient and responsive to build these systems using higher R-values than 5, but the current language limits insulation to R-5. Proposal will correct this. It is impractical to require vertical insulation at all slab edges, especially those in contact with plants or landscaping. In such installations, fastening the insulation against the slab is often impossible. The insulation is exposed to the elements and will disintegrate, especially when hit with weed trimmers, for instance. The insulation is unsightly, as no one wants a strip of blue or pink board at the end of their driveway or sidewalk. Finally, in some cases it is beneficial to allow some edge heat loss to occur, to thaw the soil against the slab edge to allow for natural drainage. Frozen soil would not allow melted snow to pass through. For all these reasons, the last part of the final sentence should be deleted.

97

USEHC 2018 – (416.3.6) Item # 081





Proposed Text:

416.0 Auxiliary Systems. 416.3.6 Testing and Flushing. Testing of snow and ice melt auxiliary systems shall be in accordance with Section 405.2 and flushing shall be in accordance with Section 405.3.

Problem Statement: Propose to add flushing to this section as a reminder that flushing should be part of the process for every hydronic system.

98

USEHC 2018 – (416.4) Item # 082





Proposed Text:

416.0 Auxiliary Systems. 416.4 Hydronic Makeup Air Units. Hydronic makeup air units that are affected by freezing shall be protected against freezing by a hydronic solution or a method approved by the Authority Having Jurisdiction.

Problem Statement: The proposal deletes language requiring approval by the AHJ.

99

USEHC 2018 – (416.5) Item # 083





Proposed Text:

416.0 Auxiliary Systems.

416.5 Types of Tube Fasteners. Tubing that is embedded within concrete shall be fastened according to manufacturer's instructions. Unless prohibited by manufacturer's instructions, approved tube fasteners include the following: (1) Ties made of wire, typically fastened to anchors such as rebar or wire mesh; (2) Plastic tube/cable ties, typically nylon, fastened to anchors such as rebar or wire

mesh; (3) Staples made of metal or plastic or combination thereof, without sharp edges that

would harm tube, fastened to insulation or subfloor; (4) Plastic rails with integrated tube holders intended for the specific type of tube; (5) Insulation sheets with integrated knobs for holding the specific type of tube and

intended for this application.

Problem Statement:

This new section provides missing guidance to installers and inspectors about approved type of tube fasteners. The specific language was reached through consensus with pipe and tubing manufacturers, the CSA B214 technical committee and will be in the next edition of CSA B214.

100

USEHC 2018 – (416.6) Item # 084





Proposed Text:

416.0 Auxiliary Systems. 416.6 Spacing of Tube Fasteners. The maximum spacing between tube fasteners within a concrete area shall not exceed the spacing specified by the manufacturer or, in the absence of manufacturer's specifications, 2.5 feet (762 mm).

Problem Statement:

This new section provides missing guidance to installers and inspectors about spacing of tube fasteners. The specific language was reached through consensus with the CSA B214 technical committee and will be in the next edition of B214.

101

USEHC 2018 – (417.1) Item # 085





Proposed Text: 417.0 Piping Installation. 417.1 General. Piping, fittings, and connections shall be installed in accordance with the conditions of their approval and manufacturer's installation instructions.

Problem Statement: The additional language will help ensure that all piping is installed correctly.

102

USEHC 2018 – (417.2) Item # 086





Proposed Text:

417.0 Piping Installation. 417.2 Embedded Piping Materials and Joints. Piping for hydronic systems which is heating or cooling panels embedded in concrete shall be steel pipe, Type L copper tubing or plastic pipe or tubing rated at not less than 100 psi at 180°F (689 kPa at 82°C). Joints of pipe or tubing that are embedded in a portion of the building, such as concrete or plaster, shall be installed in accordance with Section 417.2.1 through Section 417.2.3.

Problem Statement:

The current language in Section 417.2 should be revised as it applies to only "heating or cooling panels", whatever that means. The proposed language will not limit the section to just heating or cooling panels, and opens this to all hydronic systems.

103

USEHC 2018 – (417.2.3) Item # 087





Proposed Text:

417.0 Piping Installation 417.2 Embedded Piping and Joints. Piping for heating or cooling panels embedded in concrete shall be steel pipe, Type L copper tubing or plastic pipe or tubing rated at not less than 100 psi at 180°F (689 kPa at 82°C). Joints of pipe or tubing that are embedded in a portion of the building, such as concrete or plaster, shall be installed in accordance with Section 417.2.1 through Section 417.2.3. 417.2.1 Steel Pipe. Steel pipe shall be welded by electrical arc or oxygen/acetylene method. 417.2.2 Copper Tubing. Copper tubing shall be joined by brazing with filler metals having a melting point not less than 1000°F (538°C). 417.2.3 Plastics. Plastic pipe and tubing shall be installed in continuous lengths or shall be joined by heat fusion method, or other permanent-type mechanical fittings in accordance with the manufacturer's installation instructions.

Problem Statement:

Heat welded, and mechanical fittings can be used, and are used, for pressure systems, under slabs and underground. This section is for hydronics piping used in heating or cooling. The language requires the joints to be approved and made in accordance with the instructions. When the only material generally used for hydronics was polyethylene, heat fusing made sense. PEX is not heat fused. Supporting material showing a hydronic mat from Uponor, can be found at the following link: https://www.ppfahome.org/Attach/Cudahy_417_2_3_1210_CUSTOM_Radiant_Rollout_Mat_hePEX_06_25_2010.pdf

104

https://www.ppfahome.org/Attach/Cudahy_417_2_3_1210_CUSTOM_Radiant_Rollout_Mat_hePEX_06_25_2010.pdf

https://www.ppfahome.org/Attach/Cudahy_417_2_3_1210_CUSTOM_Radiant_Rollout_Mat_hePEX_06_25_2010.pdf

USEHC 2018 – (417.2.3) Item # 088





Proposed Text:

417.0 Piping Installation. 417.2.3 Plastics. Plastic pipe and tubing shall be installed in continuous lengths or shall be joined by heat fusion methods, solvent cement joints, or other approved fittings in accordance with Table 408.1 and the manufacturer's installation instructions.

Problem Statement:

Heat fusion is applicable only to certain materials such as PP or PE. For common hydronic materials such as CPVC, PEX and PE-RT, the ability to use embedded fittings when necessary is important, as fittings might be required to repair pipe that was damaged during construction. Many fittings for plastic tubing have been approved for use in other codes for years, and have been successfully installed in embedded applications for decades. Manufacturers of CPVC, PEX and PE-RT tubing and fittings systems want the ability to recommend use of their fittings in limited embedded applications when necessary. Examples of such fittings are those covered by existing ASTM standards D2846, F877, F1807, F1960, F2080, F2159, F2434, and F2735. In fact, each of these fitting systems are already included in Table 408.1. When manufacturers approve the use of such fittings for embedded applications, this code should not prohibit that use. The added reference to Table 408.1 ensures that only approved fittings for each type of pipe or tubing are eligible for this type of installation. Please see PPI Position Paper on Installation of PEX Fittings Within and Under Concrete Slabs at this link: http://www.plasticpipe.org/pdf/postion-paper-pex-fitting-locations.pdf

105

http://www.plasticpipe.org/pdf/postion-paper-pex-fitting-locations.pdf

USEHC 2018 – (417.3) Item # 089





Proposed Text:

417.0 Piping Installation. 417.3 Pressure Tested Testing. Piping to be embedded in concrete shall be pressure tested in accordance with Section 405.2 prior to pouring concrete. During the pour, the pipe system shall maintain the test pressure of not less than one and one-half times the hydronic system operating pressure but and not less than 100 psi (689 kPa). During freezing or the possibility of freezing conditions, testing shall be done with air where permitted by the manufacturer.

Problem Statement: The section title is likely a typo and is corrected. Reference to 405.2 is important for clear testing instructions. The word "system" is added for clarity.

106

USEHC 2018 – (417.5) Item # 090





Proposed Text:

417.0 Piping Installation. 417.5 Clearance to Combustibles. Hydronic piping where the exterior temperature exceeds 250°F (121°C) shall have a clearance of not less 1 inch (25.4 mm) to combustible materials.

Problem Statement: Section 401.2 (Insulation) already requires insulation of hot surfaces to 140°F or less, so this section is not necessary and possibly confusing.

107

USEHC 2018 – (417.6) Item # 091





Proposed Text:

417.0 Piping Installation. 417.6 Underground Piping. Piping located within a building and in or under a concrete floor slab on the ground shall be installed in accordance with the following: (1) Ferrous piping shall be galvanized and covered with an approved protective coating. (2) Copper tubing shall be installed without joints. (3) Plastic piping shall be installed in accordance with the manufacturer's installation

instructions.

Problem Statement:

Section 417.6 is being proposed as there is no direction for the end user for the installation of underground piping systems. Furthermore, similar language was addressed in the 2012 edition of the UMC. Those underground piping requirements were inadvertently removed as Chapter 12 was revised in the 2015 edition.

108

USEHC 2018 – (703.3) Item # 092

Name: Lisa Meline, Chair Steve Ferguson

Representing: IGSHPA Standards Committee ASHRAE



Proposed Text:

703.0 Design of Systems. 703.3 Verification. For closed-loop systems, the system shall be flushed of debris and purged of air after the assembly of each subheader and after completion of the entire ground-heat exchanger. Flow rates and pressure drops will be compared to calculated values to assure that there is no blockage or kinking of the pipe. A report shall be submitted to the owner to confirm that the loop flow is in accordance with the original design and balanced construction documents.

Problem Statement:

The word "closed" provides clarification as to the type of ground loop system being installed. An open loop system, in contrast, is essentially a water well and requires a different process. The industry practice for flushing the system does not happen until the entire ground loop has been constructed. On larger systems, the flushing process may be done by individual circuits or groups of circuits to ensure the design flush rate may be achieved with a reasonably sized flush pump. Furthermore, the process of 'verification' is to ensure that the closed loop will provide the design flow rate and pressure drop. This is the report that shall be provided to the Owner. Replacing the words "design and balanced" with "construction document" is much more formal and specific language.

109

USEHC 2018 – (703.3) Item # 093





Proposed Text:

703.0 Design of Systems. 703.3 Verification. For loop systems, the system shall be flushed of debris and purged of air after the assembly of each subheader and after completion of the entire ground-heat exchanger. A report shall be submitted to the owner to confirm that the loop flow is in accordance with the original design and balanced.

For direct exchanger (DX) systems, each u-bend shall be tested and proved tight with an inert gas at not less than 315 psi (2172 kPA) and maintained for 15 minutes without pressure drop. The pressure reading after tremie grouting of the boreholes shall be maintained in the ground heat exchanger for not less than 2 hours, in accordance with CSA C448.8.

TABLE 1001.1

REFERENCED STANDARDS

STANDARD NUMBER STANDARD TITLE APPLICATION REFERENCED SECTION

CSA C448 Series-2016 Design and installation of ground source heat pump systems for commercial and residential buildings

Miscellaneous 703.3

Note: CSA C448 meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

Verification of the DX system is different from the water source system. The testing method described for DX systems applies for all DX systems and not only vertical configurations. Therefore, this paragraph should be included in section 703.3 "Verification" and removed from section 703.4.2.

110

USEHC 2018 – (703.4) Item # 094





Proposed Text:

703.0 Design of Systems. 703.4 Vertical Bores. Vertical bores shall be drilled to a depth to provide complete insertion of the u-bend pipe to its specified depth. The maximum borehole diameter shall not exceed 6 inches (152 mm). The u-bend joint and pipe shall be visually inspected for integrity in accordance with the manufacturer's installation instructions. The u-bend joint and pipe shall be filled with water and pressurized to not less more than 100 psi (689 kPa) for 1 hour to check for leaks before insertion. The test pressure shall be adjusted to compensate for ambient temperature and pipe dimension ratio. To reduce thermal interference between individual bores, a minimum borehole separation distance shall not be less than 20 feet (6096 mm). Separation distances shall be permitted to be reduced where approved by the Authority Having Jurisdiction.

Problem Statement:

The pressure test of the u-bend joint and pipe is set to not more than 100 psi and aligns with Section 703.4.2. Pressure testing is a life safety issue. Long term HDPE pipe pressure ratings at any given dimension ratio and composition are extremely sensitive to temperature (ASTM D2837). The baseline temperature is 73 deg F (22.8 deg C). Both ambient temperature and solar gain affect pipe burst pressure. For example the working pressure of PE3408 is decreased by 50% at 140 deg F (60 deg C). It is not unusual to see surface temperature in the neighborhood of 200 deg F in the southwest. See Plastic Pipe Institute, Design of PE piping Systems, Chapter 6, pp. 158-159.

111

USEHC 2018 – (703.4, Table 1001.1) Item # 095





Proposed Text:

703.0 Design of Systems. 703.4 Vertical Bores. Vertical bores shall be drilled to a depth to provide complete insertion of the u-bend pipe to its specified depth. The maximum borehole diameter shall not exceed 6 inches (152 mm). be sized for the installation and placement of the heat exchange u-bend and the tremie used to place the grouting material. CSA C448 shall be used for vertical loop depth and borehole diameter sizing guidance. The u-bend joint and pipe shall be visually inspected for integrity in accordance with the manufacturer's installation instructions. The u-bend joint and pipe shall be filled with water and pressurized to not less than 100 psi (689 kPa) for 1 hour to check for leaks before insertion. To reduce thermal interference between individual bores, a minimum borehole separation distance shall not be less than 20 feet (6096 mm). Separation distances shall be permitted to be reduced where approved by the Authority Having Jurisdiction.



CSA C448 Series-2016 Design and installation of ground source heat pump systems for commercial and residential buildings

Miscellaneous 703.4

Note: CSA C448 meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

The maximum borehole diameter is not a code issue. The borehole diameter is a design issue and a practical implementation issue. In part, the maximum borehole diameter may be a jurisdiction mandate relating to the diameter of the u-bend assembly and, possibly related to a minimum grouting requirement by the Natural Resources or Water Rights Division Code of the individual State. In part, the designer or design engineer may choose a larger borehole to increase thermal storage. Also, in part, the geology such as limestone layers found in the central states will require a larger borehole in order to set a removable string of casing. Per IGSHPA, ASHRAE, and CSA the designer may adjust the depth and separation of the boreholes to fit the individual site. The borehole separation is a design issue and a practical land use issue. For example, in an annually-balanced energy storage project, the boreholes may be placed closer together to facilitate energy flow from the earth mass. In a cooling dominant project, the borehole spacing is increased to increase the storage mass and energy dissipation. Controlled drilling practices are used to avoid any special conflicts between boreholes and, in any case, do not jeopardize the earth mass used as heat exchanger. Heating and cooling dominance is a function of the building design and intended use and is not a jurisdictional issue.

112

703.0 Design of Systems.

Thermally-enhanced bentonite grout shall be used to seal and backfill each borehole. Grouting compound (bentonite-based and thermal enhancement compound) shall comply with NSF 60. Boreholes shall be backfilled in accordance with the Authority Having Jurisdiction.

113

USEHC 2018 – (703.4.2) Item # 097





Proposed Text:


703.4.2 U-Bends and Header. U-bends shall be thermally fused to the horizontal supply and return headers (or subheaders) in the trench. The assembly shall be filled with water (or water/antifreeze solution) and purged at a flow rate that exceeds 2 feet per second (0.6 m/s). Once purged, the u-bend and header assemblies shall be pressurized to not less than 100 psi (689 kPa) and maintained for 1 hour.

For DX systems, each u-bend shall be tested and proved tight with an inert gas at not less than 315 psi (2172 kPa) and maintained for 15 minutes without pressure drop. The pressure reading after tremie grouting of the boreholes shall be maintained in the ground-heat exchanger for not less than 2 hours.

Problem Statement: The testing method described for DX systems applies for all DX systems and not only vertical configurations. Therefore, this paragraph should be included in section 703.3 "Verification" and removed from section 703.4.2."

114

USEHC 2018 – (703.4.2) Item # 098





Proposed Text:


703.4.2 U-Bends and Header. U-bends shall be thermally fused to the horizontal supply and return headers (or subheaders) in the trench. The assembly shall be filled with water (or water/antifreeze solution) and purged at a flow rate that exceeds 2 feet per second (0.6 m/s). Once purged, the u-bend and header assemblies shall be pressurized to not less than 100 psi (689 kPa) and maintained for 1 hour.


Problem Statement: The reference to the thermally fusion taking place in the trenches was removed because if PEX is being used in the borehole instead of HDPE, the connection to the header supply and return piping may be a mechanical fitting.

115

USEHC 2018 – (703.4.2) Item # 099





Proposed Text:

703.0 Design of Systems. 703.4.2 U-Bends and Header. U-bends shall be thermally fused to the horizontal supply and return headers (or subheaders) in the trench. The assembly shall be filled with water (or water/antifreeze solution) and purged at a minimum flow rate that exceeds of 2 feet per second (0.6 m/s) to remove air, but not in excess of the maximum flow velocity recommended by the pipe and fittings manufacturer to remove debris. Once purged, the u-bend and header assemblies shall be pressurized to not less than 100 psi (689 kPa) and maintained for 1 hour.


Problem Statement: It is industry standard to flush systems at a rate of 2 ft/second. The reference in this section is further edited to clarify that this flow rate is for air removal only. To remove debris in the system, a higher flow rate may be required.

116

USEHC 2018 – (703.4.2, Table 1001.1) Item # 100




Section Number: 703.4.2, Table 1001.1

Proposed Text:


703.4.2 U-Bends and Header. U-bends shall be thermally fused to the horizontal supply and return headers (or subheaders) in the trench. The requirements for testing shall be in accordance with ASTM F2164, or as required by the Authority Having Jurisdiction. Where no guidance is provided, the following procedure(s) shall be followed: The u-bend and header assembly shall be filled with water (or water/antifreeze solution) and purged at a flow rate that exceeds 2 feet per second (0.6 m/s). Once purged, the u-bend and header assemblies shall be pressurized at the thermally adjusted working pressure of the lowest-rated piping system component to not less not more than 100 psi (689 kPa) and maintained for 1 hour.


TABLE 1001.1

REFERENCED STANDARDS STANDARD

NUMBER STANDARD TITLE APPLICATION

REFERENCED SECTIONS

ASTM F2164-2013

Standard Practice for Field Leak Testing of Polyethylene (PE) and Crosslinked Polyethylene (PEX) Pressure Piping Systems Using Hydrostatic Pressure

Piping, Plastic 703.4.2

Note: ASTM F2164 does not meet the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

Pressure testing is a life safety issue. Long term HDPE pipe pressure ratings at any given dimension ratio and composition are extremely sensitive to temperature (ASTM D2837). The baseline temperature is 73 deg F (22.8 deg C). Both ambient temperature and solar gain affect pipe burst pressure. For example the working pressure of PE3408 is decreased by 50% at 140 deg F (60 deg C). It is not unusual to see surface temperature in the neighborhood of 200 deg F in the southwest. See Plastic Pipe Institute, Design of PE piping Systems, Chapter 6, pp. 158-159.

117

USEHC 2018 – (703.5.2) Item # 101





Proposed Text:

703.5 Underground Piping and Submerged materials. 703.5.2 Cross-Linked Polyethylene (PEX). Crosslinked polyethylene pipe shall be manufactured to outside diameters, wall thickness, and respective tolerances in accordance with ASTM F876, ASTM F877, or CSA B137.5. Pipe or tubing shall have a dimension ratio of 9 and shall have a minimum pressure rating of not less than 160 psi (1103 kPa) at 73°F (23°C). Fittings shall be manufactured to dimensional specifications and requirements in accordance with ASTM F1055 for electrofusion fittings, and ASTM F1960, ASTM F2080, or CSA B137.5 for cold-expansion compression sleeve fittings.

Problem Statement:

In 2011 ASTM F877 was revised removing any and all requirements and specifications for the PEX tubing which is otherwise manufactured and tested per ASTM F876. It is now for system components tested with PEX. Prior to 2011, the requirements for the PEX tubing were included in both of these standards. The previous version of F877 was 2007 which included specifications and performance requirements for the PEX tubing. Hence, it is no longer proper to reference ASTM F877 when only the tubing (or piping) is being referenced in this code.

118

USEHC 2018 – (704.3) Item # 102





Proposed Text:

704.0 Installation. 704.3 Excavations and Open Trenches. Excavations required to be made for the installation of piping or tubing shall be in accordance with Section 320.3. Piping or tubing shall may be supported to maintain its alignment and prevent sagging. Piping in the ground shall be laid on a firm bed proper bedding material for its entire length to avoid pipe wear from thermal expansion and contraction. Backfill materials used in horizontal ground heat exchanger systems and in trenches shall be free from refuse, vegetable or organic matter, and rocks that may damage the piping. ; wWhere other support is otherwise provided, it shall be approved in accordance with Section 302.0. Piping or tubing shall be backfilled after an inspection in accordance with Section 320.4.

Problem Statement:

The reference to requiring the pipe to be supported is contingent upon the type of ground heat exchanger selected for installation. Not all ground heat exchanger pipe configurations require support in the trenches. This statement is being reworded to explain that as the internal fluid temperature changes, the HDPE pipe will expand and contract both radially and laterally, rubbing on sharp rocks and thus possibly causing damage to the pipe and introducing a leak.

119

USEHC 2018 – (707.1, Table 1001.1) Item # 103





Proposed Text:

707.0 Heat Pump and Distribution System Design 707.1 General. Water-source heat pumps used for geothermal heat pump applications shall comply with the testing and rating performance requirements in accordance with AHRI/ASHRAE/ISO 13256-1 for water-to-air heat pumps and AHRI/ASHRAE/ISO 13256-2 for water-to-water heat pumps. Direct geo-exchange heat pumps shall comply with the testing and rating performance requirements in accordance with AHRI 870. Heat pump equipment used in DX systems shall comply with AHRI 870. Heat pumps shall be fitted with a means to indicate that the compressor is locked out.



AHRI/ASHRAE/ISO 13256-1-1998 (RA2012)

Water-Source Heat Pumps-Testing and Rating for Performance-Part 1: Water-to-Air and Brine-to-Air Heat Pumps

Water-Source Heat Pumps

707.1

AHRI/ASHRAE/ISO 13256-2-1998 (RA2012)

Water Source Heat Pumps-Testing and Rating for Performance-Part 2: Water-to-Water and Brine-to-Water Heat Pumps

Water-Source Heat Pumps

707.1

Note: AHRI/ASHRAE/ISO 13256-1 and ARI/ASHRAE/ISO 13256-2 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

The proper reference for the rating system and performance of water-source heat pumps is ARI/ASHRAE/ISO 13256-1 for water-to-air heat pumps and ARI/ASHRAE/ISO 13256-2 for water-to-water heat pump. These equipment ratings systems for performance testing have been the industry standard since 1998, and the standard and been reaffirmed two times since then with no substantive changes to the requirements.

120

USEHC 2018 – (708.1) Item # 104





Proposed Text:

708.0 System Start-Up. 708.1 General. The following requirements shall be verified prior to system start-up. (1) Piping shall be cleaned and, flushed, and filled with the heat transfer

medium. (2) The internal and the external heat exchanger loop shall be cleaned, flushed,

and filled with the heat transfer medium before connection of the loops. The air shall be purged from the piping system. For DX systems, pressurize the system using nitrogen for not less than 1 hour. This leak test is required to verify joints and other manifold connections. Do not exceed 150 psig (1034 kPa) when pressure testing the compressor unit and indoor system components.

(3) The air shall be purged from the piping system. The external heat exchanger loop shall be cleaned, flushed, and filled with the heat transfer fluid medium, if required, before connection to the building loop.

(4) The method used for the removal of air and adding additional heat transfer fluid (where necessary) shall be provided.

(5) The heat pumps shall be operational and adjustments shall be made in accordance with the manufacturer’s installation instructions. All necessary additional flow tests of the ground heat exchanger shall be completed prior to heat pump start-up.

(6) Ground heat exchanger Vvalves and operating controls shall be set, adjusted, and operating as required.

(7) The system shall be labeled at the loop charging valves with a permanent-type label, indicating the type of heat transfer fluid used. Where antifreeze is used, the labels shall indicate the antifreeze type and concentration.

(8) DX systems shall have permanent type labels installed and affixed on the compressor unit with the refrigerant type and quantity.

(9) Supply and return lines, as well as associated isolation valves, from individual boreholes or water wells shall be identified and tagged.

(10) For DX systems, refrigerant liquid and vapor lines from the loop system shall be identified and tagged.

(11) Supply and return lines on submerged systems shall be identified in an approved manner, at the point of entry to a surface water resource.

Problem Statement:

Items (2) and (3) were reversed in the process order. All air should be out of the loops prior to adding the final heat transfer fluid, if required. Item (5) was corrected to address ground loop specifically. This section addresses items to be done PRIOR to system start-up. Additional clarification was added to (6) to be inclusive of DX systems. Item (7) is modified to require both water-only and water/anti-freeze solutions. It also implies that water-treatment chemicals should be identified. The interior piping is covered by Section 4 of this code. References to the interior piping should be eliminated.

121

USEHC 2018 – (801.1) Item # 105

Name: David Dias

Representing: Sheet Metal Worker's Local 104



Proposed Text:

801.0 General. 801.1 Applicability. Ducts and plenums that are portions of a heating, cooling, ventilation, absorption or evaporative cooling, or exhaust system shall comply with the requirements of this chapter.

Problem Statement: The proposed changes to Section 801.1 of the USEHC will correlate with similar proposed changes made to the 2018 UMC

122

USEHC 2018 – (801.2) Item # 106

Name: David Dias




Proposed Text:

801.0 General. 801.2 Sizing Requirements. Duct systems used with blower-type equipment that are portions of a heating, cooling, absorption, evaporative cooling, or outdoor-air ventilation system shall be sized in accordance with an approved standard listed in Table 1001.1, or by other approved methods.


123

USEHC 2018 – (802.1) Item # 107

Name: David Dias




Proposed Text:

802.0 Material. 802.1 General. Supply air, return air, and outside air for heating, cooling, or evaporative cooling duct systems constructed of metal shall comply with SMACNA HVAC Duct Construction Standards - Metal and Flexible or UL 181. Materials used for duct systems shall comply with Section 802.2 through Section 802.7 as applicable.

Concealed building spaces or independent construction within buildings shall be permitted to be used as ducts or plenums. Gypsum board shall not be used for positive pressure ducts. Exception: In healthcare facilities, concealed spaces shall not be permitted to be used as ducts or plenums.


124

USEHC 2018 – (802.2 – 802.5) Item # 108

Name: David Dias



Section Number: 802.2 – 802.5

Proposed Text:

802.0 Material. 802.2 Combustibles within Ducts or Plenums. Materials exposed within ducts or plenums shall be noncombustible or shall have a flame spread index not to exceed 25 and a smoke developed index not to exceed 50, where tested as a composite product in accordance with ASTM E84 or UL 723. Exceptions: (1) Return-air and outside-air ducts, plenums, or concealed spaces that serve a dwelling

unit shall be permitted to be of combustible construction. (2) Air filters. (3) Water evaporation media in an evaporative cooler. (4) Charcoal filters where protected with an approved fire suppression system. (5) Products listed and labeled for installation within plenums in accordance with Section

802.2.1 through Section 802.2.4 802.2.5. (6) Smoke detectors. (7) Duct insulation, coverings, and linings and other supplementary materials installed in

accordance with Section 804.0. (8) Materials in a hazardous fabrication area including the areas above and below the

fabrication area sharing a common air recirculation path with the fabrication area. 802.2.1 Electrical. Electrical wiring in plenums shall comply with NFPA 70. Electrical wires and cables and optical fiber cables shall be listed and labeled for use in plenums and shall have a flame spread distance not exceeding 5 feet (1524 mm), an average optical density not exceeding 0.15, and a peak optical density not exceeding 0.5, where tested in accordance with NFPA 262. 802.2.2 Fire Sprinkler Piping. Nonmetallic fire sprinkler piping in plenums shall be listed and labeled for use in plenums and shall have a flame spread distance not exceeding 5 feet (1524 mm), an average optical density not exceeding 0.15 and, a peak optical density not exceeding 0.5, where tested in accordance with UL 1887. 802.2.3 Pneumatic Tubing. Nonmetallic pneumatic tubing in plenums shall be listed and labeled for use in plenums and shall have a flame spread distance not exceeding 5 feet (1524 mm), an average optical density not exceeding 0.15, and a peak optical density not exceeding 0.5, where tested in accordance with UL 1820. 802.2.4 Loudspeakers and Recessed Lighting. Loudspeakers and recessed lighting fixtures, including their assemblies and accessories, in plenums shall be listed and labeled for use in plenums and shall have a peak rate of heat release not exceeding 134 horsepower (hp) (100 kW), an average optical density not exceeding 0.15, and a peak optical density not exceeding 0.5, where tested in accordance with UL 2043. 802.2.5 Discrete Products in Plenums. Discrete plumbing, mechanical, and electrical products that are located in a plenum and have exposed combustible material shall be listed and labeled in accordance with UL 2043.

Problem Statement: The proposed changes to Section 802.2.1 through Section 802.2.5 of the USEHC will correlate with similar proposed changes made to the 2018 UMC

125

USEHC 2018 – (802.2, Table 1001.1) Item # 109

Name: John Taecker




Proposed Text:

802.0 Material. 802.2 Combustibles within Ducts or Plenums. Materials exposed within ducts or plenums shall be noncombustible or shall have a flame spread index not to exceed 25 and a smoke developed index not to exceed 50, where tested as a composite product in accordance with ASTM E84 or UL 723. Exceptions: (1) Return-air and outside-air ducts, plenums, or concealed spaces that serve a dwelling

unit shall be permitted to be of combustible construction. (2) Air filters. (3) Water evaporation media in an evaporative cooler. (4) Charcoal filters where protected with an approved fire suppression system. (5) Products listed and labeled for installation within plenums in accordance with

Section 802.2.1 through Section 802.2.4. (6) Smoke detectors. (7) Duct insulation, coverings, and linings and other supplementary materials installed

in accordance with Section 804.0. (8) Materials in a hazardous fabrication area including the areas above and below the

fabrication area sharing a common air recirculation path with the fabrication area. (9) Plastic water distribution piping and tubing that is listed and labeled for use in

plenums and has a flame spread distance not exceeding 5 feet (1524 mm), an average optical density not exceeding 0.15, and a peak optical density not exceeding 0.5, where tested in accordance with UL 2846.

TABLE 1001.1


NUMBER STANDARD TITLE APPLICATION REFERENCED SECTION

UL 2846-2014 Standard for Fire Test of Plastic Water Distribution Plumbing Pipe for Visible Flame and Smoke Characteristics (with revisions through May 30, 2014)

Piping, plastic

802.2

Note: UL 2846 meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

UL 2846 is an ANSI standard that includes a test method for determining values of flame propagation distance and optical smoke density for individual pairs of plastic plumbing piping that can be installed in ducts, plenums, and other spaces used for environmental air. The acceptance criteria specified (peak optical density not greater than 0.50, an average optical density not greater than 0.15, and a flame spread distance not greater than 5 feet) is consistent with current requirements in Section 602.2.1 through 602.2.5. The scope of this standard can be viewed at http://ulstandards.ul.com/standard/?id=2846

126

http://ulstandards.ul.com/standard/?id=2846

USEHC 2018 – (802.4, Table 1001.1) Item # 110

Name: David Dias




Proposed Text:

802.0 Material. 802.3 Factory-Made Air Ducts. Factory-made air ducts shall be approved for the use intended or shall be in accordance with the requirements of UL 181. Each portion or a factory-made air duct system shall be identified by the manufacturer with a label or other identification indicating compliance with its class designation. 802.4 Phenolic. Ducts, plenums, or fittings of phenolic shall comply with SMACNA Phenolic Duct Construction Standards.



STANDARD NUMBER STANDARD TITLE APPLICATION REFERENCED

SECTION SMACNA-2015*

Phenolic Duct Construction Standards

Duct Systems 802.4

Note: SMACNA Phenolic Duct Construction Standard meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The proposed Section 802.4 to the USEHC will correlate with similar proposed changes made to the 2018 UMC

127

USEHC 2018 – (802.5) Item # 111

Name: David Dias




Proposed Text:

802.0 Material. 802.4 Metal. Ducts, plenums, or fittings of metal shall comply with SMACNA HVAC Duct Construction Standards - Metal and Flexible. 802.5 Existing Metal Ducts. Existing metal ducts shall be permitted to be used where cooling coils are added to a heating system, provided the first 10 feet (3048 mm) of the duct or plenum measured from the cooling coil discharge are constructed of metal of the gauge thickness in accordance with SMACNA HVAC Duct Construction Standards - Metal and Flexible. Existing metal ducts completely enclosed in inaccessible concealed areas are not required to be replaced. Accessible ducts shall be insulated in accordance with Section 804.0. For the purpose of this section, ducts shall be considered accessible where the access space is 30 inches (762 mm) or more in height.

Problem Statement: The deletion of Section 802.5 of the USEHC will correlate with similar proposed changes made to the 2018 UMC

128

USEHC 2018 – (802.6) Item # 112

Name: David Dias




Proposed Text:

802.0 Material. 802.6 Gypsum. Where gypsum products are exposed in ducts or plenums, the air temperature shall be restricted to a range from 50°F (10°C) to 125°F (52°C), and moisture content shall be controlled so that the material is not adversely affected. All gypsum products shall have a mold or mildew resistant surface. For the purpose of this section, gypsum products shall not be exposed in supply ducts serving as supply from evaporative coolers, and in other air-handling systems regulated by this chapter where the temperature of the gypsum product will be below the dew point temperature.

Problem Statement: The modification of Section 802.6 of the USEHC will correlate with similar proposed changes made to the 2018 UMC

129

USEHC 2018 – (803.4) Item # 113

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.4 Factory-Made Air Ducts and Connectors. Factory-made air ducts and connectors shall be listed and labeled in accordance with UL 181, and installed in accordance with the terms of their listing, the manufacturer's installation instructions and SMACNA HVAC Duct Construction Standards - Metal and Flexible.

Factory-made air ducts shall not be used for vertical risers in air-duct systems serving more than two stories and shall not penetrate a fire-resistance-rated assembly or construction.

Factory-made air ducts shall be installed with not less than 4 inches (102 mm) of separation from earth, except where installed as a liner inside of concrete, tile, or metal pipe and shall be protected from physical damage. The temperature of the air to be conveyed in a duct shall not exceed 250°F (121°C). Flexible air connectors shall not be permitted.

Problem Statement: The modification of Section 803.4 of the USEHC will correlate with similar proposed changes made to the 2018 UMC.

130

USEHC 2018 – (803.4.1) Item # 114

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.4.1 Length Limitation. Factory-made flexible air ducts and connectors shall be not more than 5 feet (1524 mm) in length and shall not be used in lieu of rigid elbows or fittings. Exception: Residential occupancies.

Problem Statement: The modification of Section 803.4.1 of the USEHC will correlate with similar proposed changes made to the 2018 UMC

131

USEHC 2018 – (803.5) Item # 115

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.5 Flexible Air Ducts and Connectors. Flexible air ducts and connectors shall comply with UL 181, shall be installed in accordance with the manufacturer's installation instructions, and SMACNA HVAC Duct Construction Standards - Metal and Flexible. Flexible air duct installations shall comply with the following: (1) Ducts shall be installed using the minimum required length to make the connection. (2) Horizontal duct runs shall be supported at not more than 4 feet (1219 mm) intervals. (3) Vertical risers shall be supported at not more than 6 feet (1829 mm) intervals. (4) Sag between support hangers shall not exceed 1/2 inch (12.7 mm) per foot (305 mm) of

support spacing. (5) Supports shall be rigid and shall be not less than 11/2 inches (38 mm) wide at point of

contact with the duct surface. (6) Duct bends shall be not less than one duct diameter bend radius. (7) Screws shall not penetrate the inner liner of non-metallic flexible ducts unless permitted

in accordance with the manufacturer's installation instructions. (8) Fittings for attaching non-metallic ducts shall be beaded and have a collar length of not

less than 2 inches (51 mm) for attaching the duct. Exception: A bead shall not be required where metal worm-gear clamps are used or where attaching metallic ducts using screws in accordance with the manufacturer's installation instructions.

(9) Duct inner liner shall be installed at not less than 1 inch (25.4 mm) on the collar and past the bead prior to the application of the tape and mechanical fastener. Where mastic is used instead of tape, the mastic shall be applied in accordance the mastic manufacturer's instructions.

(10) Duct outer vapor barriers shall be secured using two wraps of approved tape. A mechanical fastener shall be permitted to be used in place of, or in combination with, the tape.

(11) Flexible air ducts shall not penetrate a fire-resistance-rated assembly or construction. Flexible air connector's lengths shall be not more than 5 feet (1524 mm) and shall not penetrate a wall, floor, or ceiling.

(12) The temperature of the air to be conveyed in a flexible air duct or connector shall not exceed 250°F (121°C).


132

USEHC 2018 – (803.6, Table 803.6) Item # 116

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.6 Joints and Seams of Ducts. Joints and seams for duct systems shall comply with SMACNA HVAC Duct Construction Standards - Metal and Flexible. Joints of duct systems shall be made substantially airtight by means of tapes, mastics, gasketing, or other means. Crimp joints for round ducts shall have a contact lap of not less than 1½ inches (38 mm) and shall be mechanically fastened by means of not less than three sheet-metal screws equally spaced around the joint, or an equivalent fastening method.

Joints and seams and reinforcements for factory-made air ducts and plenums shall comply with the conditions of prior approval in accordance with the installation instructions that shall accompany the product. Closure systems for rigid air ducts and plenums shall be listed in accordance with UL 181A. Closure systems for flexible air ducts shall be listed in accordance with UL 181B. Closure systems for sealing factory made air ducts and plenums shall be listed and labeled in accordance with UL 181A or UL 181B, and marked in accordance with Table 803.6.

TABLE 803.6

CLOSURE MARKINGS TYPE OF DUCTWORK STANDARD TYPE OF

CLOSURE SYSTEM

MARKING

Rigid Metallic or Rigid Fiberglass

UL 181A Pressure Sensitive

Tape

181A-P


UL 181A Mastic Tape 181A-M


UL 181A Heat Sensitive

Tape

181A-H

Flexible Air Ducts UL 181B Pressure Sensitive

Tape*

181B-FX*

Flexible Air Ducts UL 181B Mastic* 181B-M*

* Mechanical fasteners shall be used in conjunction with a listed pressure sensitive tape or mastic in accordance with UL 181. Nonmetallic mechanical fasteners shall be listed and labeled in accordance with UL 181B and labeled "181B-C."

Note: UL 181A and UL 181B meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


133

USEHC 2018 – (803.6.1, Table 1001.1) Item # 117

Name: David Dias



Section Number: 803.6.1, Table 1001.1

Proposed Text:

803.0 Installation of Ducts. 803.6.1 Duct Leakage Tests. Ductwork shall be leak-tested in accordance with the SMACNA HVAC Air Duct Leakage Test Manual. Representative sections totaling not less than 20 percent of the total installed duct area shall be tested. Where the tested 20 percent fail to comply with the requirements of this section, then 40 percent of the total installed duct area shall be tested. Where the tested 40 percent fail to comply with the requirements of this section, then 100 percent of the total installed duct area shall be tested. Sections shall be selected by the building owner or designated representative of the building owner. Positive pressure leakage testing shall be permitted for negative pressure ductwork. The permitted duct leakage shall be not more than the following: Lmax = CLP0.65 (Equation 803.6.1) Where: Lmax = maximum permitted leakage, (ft3/min)/100 square feet [0.0001 (m3/s)/m2] duct surface area. CL = Six, duct leakage class, (ft3/min)/100 square feet [0.0001 (m3/s)/m2] duct

surface area at 1 inch water column (0.2 kPa). P = test pressure, which shall be equal to the design duct pressure class rating, inch water column (kPa).



SMACNA-2012* HVAC Air Duct Leakage Test Manual,

2nd Edition

Ducts 803.6.1

Note: SMACNA HVAC Air Duct Leakage Test Manual meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The addition of Section 803.6.1 to the USEHC will correlate with similar proposed changes made to the 2018 UMC

134

USEHC 2018 – (803.9) Item # 118

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.9 Vibration Isolators. Vibration isolators isolation connectors installed between mechanical equipment and metal ducts (or casings) shall be made of an approved material and shall not exceed 10 inches (254 mm) in length.


135

USEHC 2018 – (803.12, Table 1001.1) Item # 119

Name: David Dias




Proposed Text:

803.0 Installation of Ducts. 803.12 Underground Installation. Ducts installed underground shall be approved for the installation and shall have a slope of not less than 1/8 inch per foot (10.4 mm/m) back to the main riser. Ducts, plenums, and fittings shall be permitted to be constructed of concrete, clay, or ceramics where installed in the ground or in a concrete slab, provided the joints are tightly sealed and duct is secured in accordance with SMACNA HVAC Duct Construction Standards-Metal and Flexible. Metal ducts where installed in or under a concrete slab shall be encased in not less than 2 inches (51 mm) of concrete, secure in accordance with SMACNA HVAC Duct Construction Standards-Metal and Flexible.

803.12.1 Plastic Ducts. Plastic air ducts and fittings shall be permitted where installed underground and listed for such use.



SMACNA-2012* HVAC Air Duct Leakage Test Manual, 2nd Edition

Ducts 803.12

Note: SMACNA HVAC Air Duct Leakage Test Manual meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)


136

USEHC 2018 – (805.3) Item # 120

Name: David Dias




Proposed Text:

805.0 Smoke Dampers, Fire Dampers, and Ceiling Dampers. 805.3 Ceiling Radiation Dampers. Ceiling radiation dampers shall comply with UL 555C, and shall be installed in accordance with the manufacturer's installation instructions in the fire-resistive ceiling element membrane of floor-ceiling and roof-ceiling assemblies where required by the building code. Fire dampers not meeting the temperature limitation of ceiling radiation dampers shall not be used as a substitute.


137

USEHC 2018 – (805.4) Item # 121

Name: David Dias




Proposed Text:

805.0 Smoke Dampers, Fire Dampers, and Ceiling Dampers. 805.4 Multiple Arrangements. Where size requires the use of multiple dampers, the installation shall be framed in an approved manner to ensure that the dampers remain in place each damper shall be listed for use in multiple arrangements and installed in accordance with the manufacturer's installation instructions.


138

USEHC 2018 – (Chapter 9) Item # 122

Name: John Taecker



Section Number: Chapter 9

Proposed Text:

901.0 General.

901.1 Electrical. Electrical wiring and equipment shall comply with the applicable requirements in Chapters 1 through 4 of NFPA 70, National Electrical Code (NEC), except where modified or supplemented by the following Articles of NFPA 70: 1. Article 690 for solar photovoltaic systems, or 2. Article 691 for solar photovoltaic farms, or 3. Article 705 for utility interactive systems, or 4. Article 706 for energy storage systems. 901.2 Fire Classification. PV systems shall comply with the fire classification requirements in Chapter 15 of the Building Code where fire classification is required for the building construction. 901.3 Structural. PV systems shall comply with the structural requirements in Chapter 16 of the Building Code. 901.4 Roof access. Access on roofs with photovoltaic systems shall be provided in accordance with the Fire Code. 902.0 Equipment 902.1 Listing Requirements. Equipment used in PV power systems shall be listed in accordance with Table 902.1.

TABLE 902.1 STANDARDS FOR PV EQUIPMENT

EQUIPMENT STANDARDS

Charge controllers UL 1741 Combiner boxes UL 1741 Concentrator PV modules UL 8703 Flat-plate PV modules UL 1703 Inverters UL 1741 PV AC modules UL 1703 and UL 1741 PV DC Arc Fault Circuit Interrupters UL 1699B PV DC connectors UL 6703 PV wire UL 4703 Rack mounting systems UL 2703 Rapid shutdown equipment and systems UL 1741



UL 1699B-2013 Outline of Investigation for Photovoltaic (PV) DC Arc-Fault Circuit Protection

Electrical Table 902.1

139

USEHC 2018 – (Chapter 9) Item # 122

UL 2703-2015 Mounting Systems, Mounting Devices, Clamping/Retention Devices, and Ground Lugs for Use with Flat-Plate Photovoltaic Modules and Panels


Note: UL 1699B, UL 1703, UL 1741, UL 2703, UL 4703, UL 6703, and UL 8703 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

The requirements in Chapter 9 are incomplete for solar photovoltaic systems. They are limited to electrical requirements. According to Section 90.3 of the NEC, requirements in Chapters 1 through 4 apply, except as modified or supplemented by Chapters 5 through 7. The requirements currently in USEHC only apply to solar photovoltaic systems. These current requirements do not apply to solar PV farms, utility interactive systems, and energy storage systems. In addition to the electrical requirements, there are: 1. Requirements for resistance to external fire exposure of the building with fire classification of the PV system, 2. Structural support, including wind resistance for both ballasted and non-ballasted systems, and 3. Access requirements on the roof for firefighters. The model codes require all the equipment in a PV system to be listed, but don't identify all the standards used for listing the equipment.

140

USEHC 2018 – (902.2.1, Table 902.1, Table 1001.1) Item # 123

Name: John Taecker



Section Number: 902.2.1, Table 902.1, Table 1001.1

Proposed Text:

902.0 General Requirements. 902.2.1 Listing Requirements. Equipment used in PV power systems shall be listed in accordance with Table 902.1.

TABLE 902.2.1 STANDARDS FOR PV EQUIPMENT

EQUIPMENT STANDARD

Charge controllers UL 1741 Combiner boxes UL 1741 Concentrator PV modules UL 8703 Flat-plate PV modules UL 1703 Inverters UL 1741 PV AC modules UL 1703 and UL 1741 PV DC Arc Fault Circuit Interrupters UL 1699B PV DC connectors UL 6703 PV wire UL 4703 Rack mounting systems UL 2703 Rapid shutdown equipment and systems UL 1741

TABLE 1001.1

REFERENCED STANDARDS


UL 1699B-2013 Outline of Investigation for Photovoltaic (PV) DC Arc-Fault Circuit Protection


UL 2703-2015 Mounting Systems, Mounting Devices, Clamping/Retention Devices, and Ground Lugs for Use with Flat-Plate Photovoltaic Modules and Panels


Note: UL 1699B, UL 1703, UL 1741, UL 2703, UL 4703, UL 6703, and UL 8703 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement:

Section 902.2 requires equipment used in PV power systems to be listed for PV application. This proposal identifies the standards used for listing the equipment. UL 1703, UL 1741, UL 4703, UL 6703, and UL 8703 are already referenced in Chapter 10.

141

USEHC 2018 – (903.4.2) Item # 124

Name: John Taecker




Proposed Text:

903.0 Ground-Fault Protection. 903.4.2 Format. The marking requirements in Section 903.4.1 shall be provided in accordance with the following: (1) Red background (2) White lettering (3) Not less than 3⁄8 of an inch (9.5 mm) letter height (4) Capital letters (5) Made of reflective weather-resistant material

Problem Statement:

This section conflicts with the NEC Section 110.21(B) as referenced in USEHC Section 903.4.1 (extracted NFPA text notation). The NEC has an informational note to NEC Section 110.21(B) that states that ANSI Z535.4-2011, "Product Safety Signs and Labels", provides guidelines for suitable font sizes, words, colors, symbols, and location requirements for labels.

142

USEHC 2018 – (908.6.1) Item # 125

Name: John Taecker


Recommendation: Delete text


Proposed Text:

908.0 Stand-Alone Systems. 908.6.1 Back-Fed Devices. Plug-in-type overcurrent protection devices or plug-in type main lug assemblies that are back-fed and used to terminate field-installed ungrounded supply conductors shall be secured in place by an additional fastener that requires other than a pull to release the device from the mounting means on the panel. [NFPA 70:408.36(D)]

Problem Statement: Section 908.6.1 is a repeat of Section 908.6 requirements.

143

USEHC 2018 – (908.7, 908.8) Item # 126

Name: John Taecker



Section Number: 908.7, 908.8

Proposed Text:

909.0 Circuit Protection

909.1 908.7 Arc-Fault Circuit Protection (Direct Current). Photovoltaic systems with dc source circuits, dc output circuits or both, operating at a PV system maximum system voltage of not less than 80 volts, shall be protected by a listed (dc) arc-fault circuit interrupter, PV type, or other system components listed to provide equivalent protection. The PV arc-fault protection means shall comply with the following requirements: (1) The system shall detect and interrupt arcing faults resulting from a failure in the

intended continuity of a conductor, connection, module, or other system component in the dc PV source and dc PV output circuits.

(2) The system shall require that the disabled or disconnected equipment be manually restarted.

(3) The system shall have an annunciator that provides a visual indication that the circuit interrupter has operated. This indication shall not reset automatically. [NFPA 70:690.11]

909.2 908.8 Rapid Shutdown of PV Systems on Buildings. PV system circuits installed on or in buildings shall include a rapid shutdown function that controls specific conductors in accordance with the following: (1) Requirements for controlled conductors shall apply only to PV system conductors

of more than 5 feet (1524 mm) in length inside a building, or more than 10 feet (3048 mm) from a PV array.

(2) Controlled conductors shall be limited to not more than 30 volts and 240 volt-amperes within 10 seconds of rapid shutdown initiation.

(3) Voltage and power shall be measured between any two conductors and between any conductor and ground.

(4) The rapid shutdown initiation methods shall be labeled in accordance with Section 912.8.

(5) Equipment that performs the rapid shutdown shall be listed and identified. [NFPA 70:690.12]


Problem Statement:

Section 908.0 is titled "Stand-Alone Systems", which infers that all sections within Section 908.0 are solely for these types of systems. Both Sections 908.7 and 908.8 apply to both Stand-Alone and Utility Interactive. Thus, these Sections should not be sub-sections of Section 908.0.

144

USEHC 2018 – (Table 1001.1) Item # 127

Name: Daniel Abbate

Representing: Conditioning, Heating and Refrigeration Institute (AHRI)



Proposed Text:


STANDARD NUMBER STANDARD TITLE APPLICATION REFERENCED SECTIONS

AHRI 870 (I-P)-2005 2016* Performance Rating of Direct Geoexchange Heat Pumps

Equipment 707.1

Note: AHRI 870 (I-P) meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The above revisions reflect the latest updates to the AHRI standard that is referenced in Table 1001.1.

145

USEHC 2018 – (Table 1001.1) Item # 128

Name: Angel Guzman Rodriguez, Colleen O’Brien

Representing: The American Society of Mechanical Engineering (ASME)



Proposed Text:


STANDARD NUMBER

STANDARD TITLE APPLICATION REFERENCED

SECTIONS ASME A13.1-2007 (R2013) 2015*

Scheme for the Identification of Piping Systems

Piping 302.1.2, 302.2

ASME A112.18.2-2011 2015/CSA B125.2-2011 2015

Plumbing Waste Fittings Fittings 302.1.2, 302.2

ASME B16.12-2009(R2014)*

Cast Iron Threaded Drainage Fittings

Fittings 302.1.2, 302.2

ASME BPVC Section IV-2013 2015*

Rules for Construction of Heating Boilers


ASME BPVC Section VIII-2013 2015*

Rules for Construction of Pressure Vessels Division 1

Miscellaneous 407.1, 601.2.1, 603.6, 605.3

ASME BPVC Section IX-2013 2015*

Welding, Brazing, and Fusing Qualifications


ASME BPVC Section X-2013 2015*

Fiber-Reinforced Plastic Pressure Vessels

Pressure Vessel Construction, Pressure Vessels

603.6

ASME SA194-2013 2015*

Carbon and Alloy Steel Nuts for Bolts for High-Pressure or High-Temperature Service, or Both

Mounting 501.5.6

Note: The ASME standards meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The above revisions reflect the latest updates to the ASME standards that are referenced in Table 1001.1.

146

USEHC 2018 – (Table 1001.1) Item # 129

Name: Conrad Jahrling

Representing: ASSE International



Proposed Text:

TABLE 1001.1


NUMBER STANDARD TITLE APPLICATION REFERENCED SECTIONS

ASSE 1061-2011 2015*

Push-Fit Fittings Fittings 409.2(1), 409.3(5), Table 408.1

Note: ASSE 1061 meets the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The above revisions reflect the latest updates to the ASSE standard that is referenced in Table 1001.1.

147

USEHC 2018 – (Table 1001.1) Item # 130

Name: Steve Mawn

Representing: American Society of Testing and Materials (ASTM)



Proposed Text:


STANDARD NUMBER

STANDARD TITLE APPLICATION REFERENCED

SECTIONS ASTM A74-2013a 2016

Cast Iron Soil Pipe and Fittings Piping, Ferrous 302.1.2, 302.2

ASTM A106/A106M-2014 2015

Seamless Carbon Steel Pipe for High-Temperature Service


ASTM A269/A269M-2014e1 2015a

Seamless and Welded Austenitic Stainless Steel Tubing for General Service


ASTM A312/A312M-2014 2016

Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes


ASTM A377-2003 (R2008)e1

(R2014)

Ductile-Iron Pressure Pipe Piping, Ferrous 302.1.2, 302.2

ASTM A420/A420M-2013 2014

Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service


ASTM A733-2013 2015

Welded and Seamless Carbon Steel and Austenitic Stainless Steel Pipe Nipples


ASTM B32-2008 (R2014)

Solder Metal (Note 2) Joints 409.3(6)

ASTM B42-2010 2015a

Seamless Copper Pipe, Standard Sizes Piping, Copper Alloy

Table 408.1

ASTM B43-2014 2015

Seamless Red Brass Pipe, Standard Sizes Piping, Copper Alloy

Table 408.1

ASTM B88-2009 2014

Seamless Copper Water Tube Piping, Copper Alloy

Table 408.1

ASTM B280-2013 2016

Seamless Copper Tube for Air Conditioning and Refrigeration Field Service

Piping, Ferrous 703.6

ASTM B687-1999 (R2011) (R2016)

Brass, Copper, and Chromium-Plated Pipe Nipples


302.1.2, 302.2

ASTM C1277-2014 2015

Shielded Couplings Joining Hubless Cast Iron Soil Pipe and Fittings

Joints 302.1.2, 302.2

ASTM D93-2013 2015a

Flash Point by Pensky-Martens Closed Cup Tester

Certification 208.0

ASTM D635-2010 2014

Rate of Burning and/or Extent and Time of Burning of Plastics in a Horizontal Position

Testing 218.0

ASTM D1527-1999 (R2005)*

Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe, Schedules 40 and 80 (Withdrawn)


ASTM D1693-2013 2015

Environmental Stress-Cracking of Ethylene Plastics


148

USEHC 2018 – (Table 1001.1) Item # 130

ASTM D1785-2012 2015*

Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120


ASTM D2241-2009 2015*

Poly(Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)


ASTM D2464-2013 2015*

Threaded Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 (Note 1)


ASTM D2466-2013 2015*

Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 (Note 1)


ASTM D2467-2013a 2015*

Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 80 (Note 1)


ASTM D2609-2002 (R2008) 2015*

Plastic Insert Fittings for Polyethylene (PE) Plastic Pipe (Note 1)


ASTM D2672-1996a (R2009) 2014*

Joints for IPS PVC Pipe Using Solvent Cement

Joints 302.1.2, 302.2

ASTM D2683-2010e3 2014*

Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing


ASTM D2846/D2846M-2009be1 2014*

Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution Systems


ASTM D2855-1996 (R2010) 2015*

Making Solvent-Cemented Joints with Poly (Vinyl Chloride) (PVC) Pipe and Fittings Two-Step (Primer and Solvent Cement) Method of Joining Poly (Vinyl Chloride) (PVC) or Chlorinated Poly (Vinyl Chloride) (CPVC) Pipe and Piping Components with Tapered Sockets

Joints 302.1.2, 302.2

ASTM D3035-2014 2015*

Polyethylene (PE) Plastic Pipe (DR-PR) Based on Controlled Outside Diameter


ASTM D3261-2012e1 2015*

Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing


ASTM D3350-2012e1 2014

Polyethylene Plastics Pipe and Fittings Materials


ASTM E84-2014 2015b*

Surface Burning Characteristics of Building Materials

Miscellaneous 401.2, 502.4, 503.1, 606.5, 802.2, 804.1.2

ASTM E136-2012 2016*

Behavior of Materials in a Vertical Tube Furnace at 750°C

Furnace 216.0

ASTM E2231-2014 2015*

Specimen Preparation and Mounting of Pipe and Duct Insulation Materials to Assess Surface Burning Characteristics

Miscellaneous 804.1.2

ASTM F437-2009 2015*

Threaded Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 80


ASTM F438-2009 2015*

Socket-Type Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe Fittings, Schedule 40


ASTM F441/F441M-2013e1 2015*

Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe, Schedules 40 and 80


ASTM F493-2010 2014*

Solvent Cements for Chlorinated Poly(Vinyl Chloride) (CPVC) Plastic Pipe and Fittings

Joints 409.2(2)

149

USEHC 2018 – (Table 1001.1) Item # 130

ASTM F628-2012e1 e2*

Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe with a Cellular Core (Note 1)


ASTM F656-2010 2015*

Primers for Use in Solvent Cement Joints of Poly(Vinyl Chloride) (PVC) Plastic Pipe and Fittings

Joints 409.2(2), 409.11(2)

ASTM F876-2013a 2015a*

Crosslinked Polyethylene (PEX) Tubing Piping, Plastic 409.4, 703.5.2, Table 408.1

ASTM F1055-2013 2015 *

Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene and Crosslinked Polyethylene (PEX) Pipe and Tubing

Fittings 703.5.1, 703.5.2, Table 408.1

ASTM F1807-2013a 2015*

Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing


ASTM F1960-2012 2015*

Cold Expansion Fittings with PEX Reinforcing Rings for Use with Cross-linked Polyethylene (PEX) Tubing

Fittings 703.5.2, 703.5.2.1(3), Table 408.1

ASTM F1974-2009 (R2015)*

Metal Insert Fittings for Polyethylene/Aluminum/Polyethylene and Crosslinked Polyethylene/Aluminum/ Crosslinked Polyethylene Composite Pressure Pipe

Fittings 409.5(1), 409.8(1), Table 408.1

ASTM F2159-2011 2014*

Plastic Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing

Joints Table 408.1

ASTM F2389-2010 2015

Pressure-Rated Polypropylene (PP) Piping Systems


ASTM F2434-2009 2014*

Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Cross-linked Polyethylene/Aluminum/Cross-linked Polyethylene (PEX-AL-PEX) Tubing

Pipe Fittings 409.5(1), Table 408.1

ASTM F2623-2008 2014*

Polyethylene of Raised Temperature (PE-RT) SDR 9 Tubing


ASTM F2735-2009 (R2016)*

Plastic Insert Fittings for SDR9 Cross-linked Polyethylene (PEX) and Polyethylene of Raised Temperature (PE-RT) Tubing


ASTM F2769-2010 2014*

Polyethylene of Raised Temperature (PE-RT) Plastic Hot and Cold-Water Tubing and Distribution Systems

Piping and Fittings, Plastic

Table 408.1

Note: The ASTM standards meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.

150

USEHC 2018 – (Table 1001.1) Item # 130

Note: The ASTM D2855 does not meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the ASTM standards that are referenced in Table 1001.1.

151

USEHC 2018 – (Table 1001.1) Item # 131

Name: Paul Olson

Representing: American Water Works Association (AWWA)



Proposed Text:



AWWA C203-2008 2015*

Coal-Tar Protective Coatings and Linings for Steel Water Pipelines–Enamel and Tape–Hot Applied


AWWA C213-2007 2015*

Fusion-Bonded Epoxy Coatings for the Interior and Exterior of and Linings for Steel Water Pipelines and Fittings


AWWA C507-2011 2015*

Ball Valves, 6 in. through 60 in. (150 mm through 1500 mm)

Valves 302.1.2, 302.2

Note: The AWWA standards meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the AWWA standard that is referenced in Table 1001.1.

152

USEHC 2018 – (Table 1001.1) Item # 132

Name: Nikki Kidd, Lauro Pilla

Representing: Canadian Standards Association (CSA)



Proposed Text:

TABLE 1001.1


NUMBER STANDARD TITLE APPLICATION

REFERENCED SECTIONS

CSA Z21.10.1-2013 2014*

Gas Water Heaters-, Volume I, Storage Water Heaters with Input Ratings of 75,000 Btu Per Hour or Less (same as CSA 4.1)


Table 403.2

CSA Z21.10.3-2013 2015*

Gas-Fired Water Heaters-, Volume III, Storage Water Heaters with Input Ratings Above 75,000 Btu Per Hour, Circulating and Instantaneous (same as CSA 4.3)


Table 403.2

CSA Z21.22b-2001 (R2008) 2015*

Relief Valves for Hot Water Supply Systems (same as CSA 4.4b)

Valves 302.1.2, 302.2

CSA Z21.24a-2009 (R2011) 2015*

Connectors for Gas Appliances (same as CSA 6.10a)

Fuel Gas 302.1.2, 302.2

Note: The CSA standards meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the CSA standards that are referenced in Table 1001.1.

153

USEHC 2018 – (Table 1001.1) Item # 133

Name: Anasthasie Sainvilus

Representing: The Institute of Electrical and Electronics Engineers, Inc. (IEEE)



Proposed Text:



IEEE 1361-2003 2014

Guide for Selecting, Charging, Testing, and Evaluating Lead-Acid Batteries Used in Stand-Alone Photovoltaic (PV) Systems

Testing, Evaluation

302.1.2, 302.2

Note: IEEE 1361 does not meet the requirements for a mandatory reference standard in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the IEEE standard that is referenced in Table 1001.1.

154

USEHC 2018 – (Table 1001.1) Item # 134

Name: Laura Montville

Representing: National Fire Protection Association (NFPA)



Proposed Text:



NFPA 54/Z223.1-2012 2015*

National Fuel Gas Code Fuel Gas 302.1.2, 302.2

NFPA 262-2011 2015*

Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces

Certification 802.2.1

Note: NFPA 54 and NFPA 626 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the NFPA standard that is referenced in Table 1001.1.

155

USEHC 2018 – (Table 1001.1) Item # 135

Name: Jeremy Brown

Representing: NSF International (NSF)



Proposed Text:



SECTIONS NSF 14-2013 2015*

Plastic Piping System Components and Related Materials


NSF 60-2013 2015*

Drinking Water Treatment Chemicals-Health Effects

Backfill 703.4.1

NSF 61-2013 2015*

Drinking Water System Components – Health Effects

Water Supply Components

501.5.4

Note: NSF 14, NSF 60, and NSF 61 meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes. (portions of table not shown remain unchanged)

Problem Statement: The above revisions reflect the latest updates to the NSF standard that is referenced in Table 1001.1.

156

USEHC 2018 – (Table 1001.1) Item # 136

Name: John Taecker

Representing: Underwriters Laboratories, Inc. (UL)



Proposed Text:



SECTIONS UL 174-2004* Household Electric Storage Tank Water Heaters

(with revisions through September 21, 2012 April 10, 2015)


UL 268A-2008* Smoke Detectors for Duct Application (with revisions through September 25, 2009 October 2, 2014)

Smoke Detectors

808.1

UL 555-2006* Fire Dampers (with revisions through November 5, 2013 May 21, 2014)

Dampers 805.2

UL 555C-2006 2014*

Ceiling Dampers (with revisions through May 4, 2010)

Dampers 805.3

UL 555S-1999 2014*

Smoke Dampers (with revisions through October 9, 2013)

Dampers 805.1

UL 778-2010* Motor-Operated Water Pumps (with revisions through May 23, 2014 September 2, 2015)

Pumps 302.1.2, 302.2

UL 873-2007 Temperature-Indicating and -Regulating Equipment (with revisions through August 15, 2013 February 6, 2015)


UL 916-2007 2015 Energy Management Equipment (with revisions through December 19, 2013)


UL 969-1995* Marking and Labeling Systems (with revisions through November 24, 2008 September 19, 2014)

Marking, Labeling

302.1.2, 302.2

UL 1453-2004 2016*

Electric Booster and Commercial Storage Tank Water Heaters (with revisions through July 15, 2011)


UL 1703-2002* Flat-Plate Photovoltaic Modules and Panels (with revisions through October 25, 2013 October 12, 2015)

Electrical 902.5

UL 1741-2010 Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources (with revisions through March 23, 2016)

Electrical 914.10

UL 4703-2010 2014

Outline of Investigation for Photovoltaic Wire Electrical 302.1.2, 302.2

UL 6703-2011 2014

Outline of Investigation for Connectors for Use in Photovoltaic Systems (with revisions through January 16, 2015)


Note: The UL standards meet the requirements for mandatory reference standards in accordance with Section 15.0 of IAPMO’s Regulations Governing Consensus Development of the Uniform Solar Energy & Hydronics and Swimming Pool, Spa & Hot Tub Codes.


Problem Statement:

The above revisions reflect the latest updates to the ASME standards that are referenced in Table 1001.1.

157

2016 uniform solar energy & hydronics code technical ...codes.iapmo.org/docs/2016 usehc...

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