CONTENTS
CHAPTER 1 ADMINISTRATION ..............1
101.0 Title, Purpose, and Scope ..............1
101.1 Title ...............................1
101.2 Purpose ........................... .1
101.3 Plans Required .......................1
101.4 Scope ..............................1
101.5 Application to Existing Solar System .... .1
102.0 Organization and Enforcement ......... .1
102.1 Authority Having Jurisdiction .......... .1
102.2 Duties and Powers of the Authority
Having Jurisdiction .................. .2
102.3 Violation and Penalties ................2
103.0 Permits and Inspections ................2
103.1 Permits ............................ .2
103.2 Application for Permit.................2
103.3 Permit Issuance ......................3
103.4 Inspections ..........................3
103.5 Connection Approval ................. .4
103.6 Validity .............................4
CHAPTER 2 DEFINITIONS .................. .5
201.0 General............................ .5
202.0 Defintions of Terms .................. .5
CHAPTER 3 GENERAL REGULATIONS .... .13
301.0 Materials - Standards and Alternates ... .13
301.1 Minimum Standards .................13
301.2 Alternative Materials and Methods .......
Equivalency ........................13
302.0 Iron Pipe Size (IPS) Pipe ..............13
303.0 Disposal of Liquid Waste ............ .13
304.0 Connections to Plumbing System .......13
305.0 Structural Design Loads ............. .13
306.0 Deleterious Wastes ...................14
307.0 Location .......................... .14
307.1 Site ..........:-....................14
307.2 Transfer of Ownership ................14
308.0 Improper Location .................. .14
309.0 Workmanship ....................... 14
309.1 Accepted Engineering Practices ....... .14
309.2 Conceals ....... ....................14
309.3 Imperfections ...................... .14
309.4 Installation Practices ................ .14
310.0 Installation .........................14
310.1 Accessible Locations .................14
310.2 Direction of Flow ...................14
311.0 Screwed Fittings ................... .14
312.0 Protection of Piping, Materials and
Structures ..........................14
312.1 Under or Through Walls ..............14
312.2 Expansion and Contraction ............14
312.3 Sleeves ............................14
312.4 Load from Building Structure ..........14
312.5 Structural Integrity ...................14
312.6 Corrosion, Erosion, or Mechanical
Damage ...........................14
312.7 Protectively Coated Pipe ..............14
312.8 Tightness ..........................14
312.9 Solar Fluid Piping ...................15
312.10 Waterproofing of Openings ............15
312.11 Plastic and Copper Piping ............ .15
312.12 Freeze Protection ................... .15
312.13 Water Hammer Protection ............ .15
312.14 Ratproofing ........................15
312.15 Protection Against Decay
and Termites ........................ 15
313.0 Hangers and Supports ............... .15
313.1 Suspended Piping ...................15
313.2 Alignment .........................15
313.3 Excavation ........................ .15
313.4 Strength .......................... .15
313.5 Components of Solar System ..........15
313.6 Hanger Rod Sizes ...................15
Table 3-1 Hanger Rod Size ..................15
314.0 Trenching, Excavation, and Backfill .... .15
314.1 Trenches ...........................15
314.2 Tunneling and Driving .............. .15
314.3 Open Trenches ..................... .15
314.4 Excavations ....................... .15
314.5 Water Pipes ....................... .16
315.0 Changes in Direction .................16
316.0 Testing ........................... .16
316.1 Media .............................16
316.2 Liquid Solar Energy System ...........16
316.3 Storage Tanks ......................16
317.0 Abandonment...................... .16
317.1 General............................16
317.2 Storage Tank ...................... .16
318.0 Other Systems ......................16
319.0 Safety Requirements .................16
319.1 Pressure Vessels .....................16
319.2 Controls .......................... .16
319.3 Welding ...........................16
319.4 Water Temperature .................. .16
IX
319.5 Spark or Flame .....................16
319.6 Protection ......................... .16
319.7 Hazardous Heat-Transfer Materials .... .17
319.8 Materials ..........................17
320.0 Corrosion ..........................17
Table 3-2 Hangers and Supports ..............18
CHAPTER 4 COLLECTORS ............... .21
401.0 Construction ........................21
401.1 General ........................... .21
401.2 Mounting ......................... .21
401.3 Ground Clearance .................. .21
401.4 Construction ....................... .21
401.5 Glass ............................ .21
401.6 Plastic ............................ .21
401.7 Stagnation Condition ................ .21
401.8 Certification ....................... .21
402.0 Location ...........................21
402.1 Combustible Materials ............... .21
402.2 Orientation ........................ .21
402.3 Accessibility .......................21
403.0 Collectors ..........................21
403.1 Air Heating Collectors ................21
403.2 Water Heating Collectors ..............21
404.0 Fire Safety Requirements .............22
404.1 Building Components ................22
404.2 On the Roof/Elevated Above
or the Roof .........................22
405.0 Collector Installation ................ .22
405.1 Instructions ....................... .22
405.2 Safety ............................ .22
405.3 Waterproofing ......................22
CHAPTER 5 THERMAL STORAGE ......... .23
501.0 Storage or Heat Exchanger Tank
Construction ....................... .23
501.1 General ........................... .23
501.2 Concrete .......................... .23
501.3 Metal Tanks ....................... .23
501.4 Non Metal Tanks ................... .23
502.0 Expansion Tanks ................... .23
502.1 General ............................23
502.2 Systems with Open Expansion Tanks ... .23
502.3 Closed-Type Systems .................23
502.4 Minimum Capacity of
Closed-Type Tank ...................23
503.0 Corrosion ......................... .23
Table 5-1 Expansion Tank Capacities for
Gravity Hot Water Systems ............24
Table 5-2 Expansion Tank Capacities for
Forced Hot Water Systems ............24
504.0 Test Pressure for Tanks Used
in Solar Systems ................... .24
505.0 Dry Storage Systems,. ................24
505.1 Waterproofing ..................... .24
505.2 Detecting Water Intrusion ............ .24
505.3 Rock as Storage Material .............24
505.4 Odour and Particulate Control ..........24
505.5 Combustibles Within Ducts
or Plenums ........................ .24
CHAPTER 6 THERMAL INSULATION ........25
601.0 General Requirements ............... .25
602.0 Piping ............................ .25
602.1 Where Required .................... .25
602.2 Fittings ........................... .25
602.3 Installation ........................ .25
603.0 Ducts .............................25
604.0 Tanks .............................25
604.1 Thickness ......................... .25
604.2 Temperature Difference .............. .25
604.3 Insulation ......................... .25
Table 6-1 Minimum Pipe Insulation ...........25
Table 6-2 Iron Pipe and Copper Tubing
Insulation Thickness (S-I Units) ....... .26
Table 6-2 Iron Pipe and Copper Tubing
Insulation Thickness (I-P Units) ....... .27
Table 6-3 Universal Pipe Insulation Thickness
Based on Radius and IPS (S-I Units) ... .28
Table 6-3 Universal Pipe Insulation Thickness
Based on Radius and IPS (I-P Units) ... .28
Table 6-4 Thermal Conductivity of
Industrial Insulation (S-I Units) ........ .29
Table 6-4 Thermal Conductivity
of Industrial Insulation (1-P Units) ..... .30
Table 6-5 Insulation of Ducts ............... .31
Table 6-6 Minimum Tank Insulation ...........31
CHAPTER 7 DUCT WORK ..................33
701.0 Application ....................... .33
702.0 Design, Fabrication, and Installation .... .33
CHAPTER 8 PIPING .......................35
801.0 Unacceptable Connections ............35
801.1 General............................35
801.2 Connection ........................ .35
801.3 Installation ........................ .35
802.0 Identification of a Potable and
Nonpotable Water System .............35
802.1 Potable Water ...................... .35
802.2 Colour and Information ...............35
802.3 Fixtures .......................... .35
Table 8-1 Minimum Length of Color
Field and Size of Letters ..............35
803.0 Cross-Connection Control ............ .35
803.1 General ............................35
803.2 Approval of Devices or Assemblies .....35
804.0 General Requirements ................35
804.1 Listing ............................35
804.2 Identification .......................35
804.3 Testing ........................... .35
Table 8-2 Minimum Airgaps for Water
Distribution ....................... .36
804.4 Access and Clearance ............... .36
804.5 Direct Connection Prohibited ......... .36
804.6 Backflow Preventers ................ .36
804.7 Manufacturer Installed Backflow
Preventer ......................... .36
804.8 Cold Climate ...................... .36
804.9 Drain Lines ....................... .36
805.0 Specific Requirements ............... .36
805.1 Heat Exchangers ................... .36
Table 8-3 Backflow Prevention Devices,
Assemblies, and Methods ............ .37
805.2 Protections .........................39
805.3 Backflow Device ....................39
805.4 Chemical Injection .................. .39
805.5 Nonpotable Water Piping ..............39
805.6 Location .......................... .39
805.7 Deck-Mounted ......................39
806.0 Materials ..........................39
806.1 Pipe, Tube, and Fittings ...............39
806.2 Malleable Iron Fittings ...............39
806.3 Black Steel Pipe and Fittings ......... .39
806.4 PEX ............................. .39
Table 8-4 Material Referenced Standard Table ... .39
806.5 PEX-AL-PEX and PE-AL-PE ........ ..40
806.6 Listed Flexible Connectors ........... .40
806.7 Flexible Corrugated Connectors ....... .40
807.0 Valves ............................ .40
807.1 Size ..............................40
807.2 Control Valve ...................... .40
807.3 Accessibility ...................... .40
807.4 Closed Loop Systems ............... .40
808.0 Water Pressure, Pressure Regulators
and Pressure-Relief Valves ............40
808.1 Excessive Water Pressure .............40
808.2 Pressure-Relief Valve ................ .40
808.3 Pressure Type Storage Tank ............40
808.4 Interior Relief Valves .................40
808.5 Separate Storage Tank ............... .40
809.0 Automatic Air Vents ................ .41
810.0 Vacuum Relief Valves ................41
810.1 Installation ........................ .41
811.0 Installation ........................ .41
811.1 Under Concrete Slab ..................41
812.0 Check Valves .......................41
813.0 Flow Directions .................... .41
CHAPTER 9 JOINTS AND CONNECTIONS . . .43
901.0 Tightness ..........................43
902.0 Types of Joints ......................43
902.1 Threaded Joints .....................43
902.2 Soldered Joints ..................... .43
902.3 Flared Joints ....................... .43
902.4 Flexible Compression Factory- Fabricated Joints.... .43
902.5 Solvent Cement Plastic Pipe Joints ......43
902.6 Brazing and Welding ................ .43
902.7 Pressure-Lock Type Connection ........43
902.8 Pressed Fitting ..................... .43
902.9 Push-Fit Fitting .....................43
902.10 Heat-Fusion Weld Joints ............. .43
903.0 Special Joints ...................... .43
903.1 Copper Tube to Screw Pipe Joints ......43
903.2 Plastic Pipe to Other Materials .........43
903.3 Expansion Joints ....................43
903.4 Unions ............................44
903.5 Other Joints ........................44
CHAPTER 10 SOLAR PHOTOVOLTAIC SYSTEMS 45
Preamble .................................45
1001.0 General Requirements ............... .45
1002.0 Solar Photovoltaic Systems ............45
I. General ...............................45
1002.1 Scope ............................ .45
1002.2 Other Articles ...................... .45
1002.3 Installation ........................ .45
Figure 10-1 Identification of Solar Photovoltaic
System Components .................45
Figure 10-2 Identification of Solar Photovoltaic System Components in Common System Configurations .............. .45
1002.4 Ground-Fault Protection ............. .46
1002.5 Alternating-Current (ac) Modules .......46
II. Circuit Requirements ..................46
1002.6 Maximum Voltage .................. .46
Table 10-1 Voltage Corrections Factors for Crystalline and Multicrystalline Silicon Modules .................... .47
1002.7 Circuit Sizing and Current............ .47
1002.8 Overcurrent Protection ...............48
1002.9 Stand-Alone Systems .................48
III. Disconnecting Means .................49
1002.10A11 Conductors ......................49
1002.11 Additional Provisions ............... .49
1002.12 Disconnection of Photovoltaic
Equipment ........................ .50
1002.13 Fuses .............................50
1002.14 Switch or Circuit Breaker .............50
1002.15 Installation and Service
of an Array .........................50
IV. Wiring Methods ......................50
1002.16 Methods Permitted .................. .50
1002.17 Component Interconnections .......... .51
1002.18 Connectors ........................ .51
Table 10-2 Correction Factors Temperature
Rating of Conductor ................ .51
1002.19Access to Boxes .....................51
1002.20 Ungrounded Photovoltaic
Power Systems ......................51
V. Grounding ............................52
1002.21 System Grounding .................. .52
1002.22 Point of System Grounding
Connection .........................52
1002.23 Equipment Grounding ............... .52
1002.24 Size of Equipment Grounding
Conductor .........................52
1002.25 Array Equipment Grounding
Conductors .........................52
1002.26 Grounding Electrode System ...........52
1002.27 Continuity of Equipment Grounding
Systems .......................... .53
1002.28 Continuity of Photovoltaic Source and Output Circuit Grounded Conductors ................53
1002.29 Equipment Bonding Jumpers ..........53
VI. Marking .............................53
1002.30 Modules ...........................53
1002.31 Alternating-Current Photovoltaic
Modules ...........................53
1002.32 Direct-Current Photovoltaic
Power Source .......................53
1002.33 Interactive System Point of
Interconnection .................... .54
1002.34 Photovoltaic Power Systems
Employing Energy Storage ............54
1002.35 Identification of Power Sources ........54
VII. Connection to Other Sources .........54
1002.36 Load Disconnect ................... .54
1002.37 Identified Interactive Equipment ........54
1002.38 Loss of Interactive System Power .......54
1002.39 Ampacity of Neutral Conductor ........54
1002.40 Unbalanced Interconnections ..........54
1002.41 Point of Connection ................. .54
VIII. Storage Batteries ...................55
1002.42 Installation .........................55
1002.43 Charge Control......................56
1002.44 Battery Interconnections ............. .56
I.. Systems Over 600 Volts ..............56
1002.45 General ............................56
1002.46 Definitions ........................ .56
CHAPTER 11 MATERIAL STANDARDS ..... .57
Table 11-1 Material Standards ............... .57
Table 11-1, Abbreviations ...................67
Table 11-1A BIS Codes, Water Supply
and Solar Energy ...................... .68
APPENDICES TABLE OF CONTENTS ...... .71
Appendix A Conversion Table ................73
Appendix B Symbols ........................75
Appendix C Engineered Solar Hot
Water Systems ..........................77
Appendix D Solar Photovoltaic Power Plant
Installation (Additional Requirements) ......79
Index.83