Draft Details
- Natural gas and propane installation code (New...
- DRAFT STANDARD
- Legal Notice for Draft Standards
- Preface
- 0 Introduction
- + 1 Scope
- 1.1 Inclusions
- 1.2 Exclusions
- 1.3 Fuel
- 1.4 No guarantee
- 1.5 Units of measure
- 1.6 Terminology
- 2 Reference publications
- 3 Definitions
- + 4 General
- + 4.1 Application
- 4.1.1 Requirements
- 4.1.2 Code conflicts
- 4.1.3 Installation instructions
- 4.1.4 Field-approved appliance installation
- 4.1.5 Conflicts
- + 4.2 Approval of appliances, accessories, compon...
- 4.2.1 Installation
- 4.2.2 Deviation
- 4.2.3 Assembly or construction approval
- 4.2.4 Other gasses
- + 4.3 Responsibilities of the installer
- 4.3.1 Initial installation
- 4.3.2 User instructions
- 4.3.3 Manufacturer instructions
- 4.3.4 Replacement parts
- 4.3.5 Appliance conversion
- 4.3.6 User procedures
- 4.3.7 Piping pressure test
- 4.3.8 Gas tight test
- + 4.4 Training and quality of labour
- 4.4.1 Work quality
- 4.4.2 Training
- + 4.5 Suitability of use
- 4.5.1 Type of gas and pressure
- 4.5.2 Hazards
- 4.5.3 Appliance conversion
- 4.5.4 Rating plate conversion
- 4.5.5 Damaged appliances and piping
- 4.5.6 Used appliances
- + 4.6 Meter and service regulator installations
- 4.6.1 Installations
- 4.6.2 Supplier distributor systems
- + 4.7 Electrical connections and components
- 4.7.1 Code requirements
- 4.7.2 Electrical circuit
- 4.7.3 Equipotential bonding
- 4.7.4 Appliance bonding
- 4.7.5 CSST bonding
- + 4.8 Mobile homes and recreational vehicles
- 4.8.1 Appliance installation
- 4.8.2 Placement
- 4.8.3 Appliance application
- + 4.9 Hazardous and corrosive locations
- 4.9.1 Installation
- 4.9.2 Approved installation
- 4.10 Smoking
- 4.11 Isolation of safety devices
- + 4.12 Leak detection
- 4.12.1 Sources of ignition
- 4.12.2 Light and/or flashlight use
- 4.12.3 Electric switches
- + 4.13 Appliance clearances to combustible materi...
- 4.13.1 Clearances
- 4.13.2 Clearance reduction
- 4.13.3 Combustible floor material
- 4.13.4 Aircraft storage installations
- + 4.14 Accessibility
- 4.14.1 Installation
- 4.14.2 Service clearances
- 4.14.3 Access dimensions
- 4.14.4 Appliance passageways
- 4.14.5 Roof access
- 4.14.6 Roof installation clearances
- 4.14.7 Means of service
- + 4.15 Outdoor installations
- 4.15.1 Appliance approval
- 4.15.2 Flue gasses
- 4.15.3 Space heater or pool heater installation...
- + 4.16 Appliances in garages
- 4.16.1 Protection
- 4.16.2 Flammable vapours
- 4.16.3 Flammable vapour clearance
- 4.16.4 Building Code requirements
- + 4.17 Appliance ductwork connections
- 4.17.1 Approved use
- 4.17.2 Return air ducts
- + 4.18 Combined heating systems
- 4.18.1 Solid fuel heated air
- 4.18.2 Building code requirements
- + 4.19 Appliances protected by automatic fire‑ext...
- 4.19.1 Interlock system
- 4.19.2 Interlock valve
- 4.19.3 Manual shutoff valve
- 4.20 Control of appliances with self‑energizing...
- + 4.21 Defective heat exchangers
- 4.21.1 Replacement
- 4.21.2 Temporary repair
- 4.21.3 Commercial or industrial repair
- + 4.22 High-altitude installations
- 4.22.1 Certification and adjustment
- 4.22.2 Elevation input rating
- 4.23 Protection of appliances from physical dam...
- + 4.24 Odourization
- 4.24.1 Natural gas odourization
- 4.24.2 Propane odourization
- 4.24.3 Propane odourization responsibility
- + 4.25 Mobile homes and recreational vehicles
- 4.25.1 Appliance type and separation
- 4.25.2 Air inlet or flue gas outlet clearances
- 4.25.3 Propane vapour supply pressure
- 4.25.4 Appliance certification
- 4.25.5 Combustion air
- 4.25.6 Alternate means of combustion or ventila...
- 4.25.7 Cargo heater
- 4.25.8 Cargo heater installation
- 4.25.9 Propane warning labels
- 4.25.10 Appliance warning labels
- + 5 Pressure controls
- + 5.1 Delivery pressure
- 5.1.1 Gas piping system pressures
- 5.1.2 Piping to central boilers or mechanical r...
- 5.1.3 Gas piping system design
- 5.1.4 Delivery pressure and overpressure protec...
- 5.1.5 Residential applications
- 5.1.6 Piping propane in the liquid phase
- 5.1.7 Line pressure regulator location
- + 5.2 Pressure regulators
- + 5.2.1 General
- 5.2.1.1 Gas supply pressures
- 5.2.1.2 Pressure regulators and overprotection ...
- 5.2.1.3 Pressure regulator features
- 5.2.1.4 Minimum clearances
- 5.2.1.5 Bypassing pressure regulators
- 5.2.1.6 Lock-up type pressure regulators
- 5.2.1.7 Manual shut-off valves and overpressure...
- 5.2.1.8 Pressure regulators
- + 5.2.2 Additional requirements for line pressure...
- 5.2.2.1 Line pressure regulator
- 5.2.2.2 Two-stage regulation
- + 5.2.3 Additional requirements for industrial pr...
- 5.2.3.3 Pressure regulator(s) downstream of ano...
- + 5.3 Overpressure protection devices
- 5.3.1 Overpressure protection
- 5.3.2 Overpressure protection devices
- 5.3.3 Class I line pressure regulator
- 5.3.4 Internal relief valve or line relief valv...
- + 5.4 Hydrostatic relief devices for propane appl...
- 5.4.1 Hydrostatic relief valves
- 5.4.2 Discharge lines from hydrostatic relief d...
- + 5.5 Venting of pressure control devices
- + 5.5.1 Construction of vent piping for pressure ...
- 5.5.1.1 Inclusions
- 5.5.1.2 Exceptions
- 5.5.1.3 Venting
- 5.5.1.4 Natural gas and hydrogen – Natural gas ...
- 5.5.1.5 Bleed vents
- + 5.5.2 Construction of vent piping for overpress...
- 5.5.2.1 Inclusions
- 5.5.2.2 Exceptions
- 5.5.2.3 Vent line
- 5.5.2.4 Outdoor vent termination
- 5.5.2.5 Venting pressure regulators
- 5.5.2.6 Two or more relief valves
- 5.5.2.7 Vents
- + 5.5.3 Additional requirements for venting of pr...
- 5.5.3.1 Vent lines
- 5.5.3.2 Propane applications
- 5.5.4 Venting exemptions for pressure regulator...
- 5.6 Termination of vents
- + 5.7 Pressure regulators on appliances using pro...
- 5.7.1 Excess propane pressures
- 5.7.2 Pilots
- + 6 Gas piping systems
- + 6.1 General
- 6.1.1 Piping
- 6.1.2 Removal
- + 6.2 Material
- 6.2.1 Piping standard specification
- 6.2.2 Fittings
- + 6.2.3 Piping schedule
- 6.2.3.1 Operating pressure equal to or less tha...
- 6.2.3.2 Operating pressure exceeding 125 psig (...
- 6.2.4 Copper tubing for gas
- 6.2.5 Copper tubing for propane
- 6.2.6 Flare nuts
- 6.2.7 Tubing fittings rated pressure
- 6.2.8 Copper tubing underground
- 6.2.9 Tubing
- 6.2.10 Minimum working pressure
- 6.2.11 Hoses for cutting and welding
- 6.2.12 Liquid propane hose prohibition
- 6.2.13 Seamless steel tubing standard specifica...
- 6.2.14 Alternative material
- 6.2.15 Plastic piping and tubing standard speci...
- 6.2.16 Plastic piping and tubing fittings
- 6.2.17 Plastic pipe prohibition
- 6.2.18 Plastic piping or tubing use
- 6.2.19 Plastic pipe propane prohibition
- 6.2.20 Plastic piping or tubing temperature
- 6.2.21 Plastic piping or tubing termination
- 6.2.22 CSST standard specification
- 6.2.23 CSST prohibition
- + 6.3 Size
- 6.3.1 General
- 6.3.2 Pressure equal to or less than 14 in w.c....
- 6.3.3 Pressure exceeding 14 in w.c. (3.5 kPa)
- 6.3.4 Pressure regulator
- 6.3.5 Plastic piping
- 6.3.6 Relative density
- 6.3.7 Equivalent length
- + 6.3.8 Size less than NPS 1/2
- 6.3.8.1 Natural gas and hydrogen – natural gas ...
- 6.3.8.2 Propane piping location
- 6.3.9 Piping concealed location
- + 6.4 Volume of gas to be used for sizing gas pip...
- 6.4.1 Total volume
- 6.4.2 Volume determination
- 6.4.3 Diversity load
- + 6.5 Allowable pressure and pressure drop
- 6.5.1 Pressure determination
- 6.5.2 Pressure regulator requirement
- 6.5.3 Pressure drop determination
- + 6.6 Extensions
- 6.6.1 Adequate capacity
- 6.6.2 Insufficient capacity
- + 6.7 Location
- 6.7.1 Concealed piping or tubing
- 6.7.2 Piping or tubing installation prohibition...
- 6.7.3 Corrosive chemical
- 6.7.4 Solid flooring
- 6.7.5 Vertical piping
- 6.7.6 False ceiling space
- + 6.8 Piping practices
- 6.8.1 General
- 6.8.2 Piping ends
- 6.8.3 Piping support
- 6.8.4 Structural integrity
- 6.8.5 Back flow prevention
- 6.8.6 Filter requirements
- 6.8.7 Manufacturer’s fabricated fittings
- 6.8.8 Supply header exceeds NPS 2-1/2
- 6.8.9 Support material
- 6.8.10 Test ports
- + 6.9 Joints and connections
- 6.9.1 Steel piping
- 6.9.2 Type
- 6.9.3 Welding
- 6.9.4 Welding acceptance criteria
- 6.9.5 Piping or fitting thread
- 6.9.6 Jointing sealant
- 6.9.7 Gasket material
- 6.9.8 Lubricant use
- 6.9.9 Seamless copper, brass, or steel tubing
- 6.9.10 Bushing
- 6.9.11 Plastic pipe and fittings
- 6.10 Branch piping outlets
- + 6.11 Appliance connections
- 6.11.1 General
- 6.11.2 Gas hose or connector requirements
- 6.11.3 Quick-disconnect location
- 6.11.4 Gas convenience outlet certification
- 6.11.5 Quick-disconnect certification
- 6.11.6 Support
- + 6.12 Piping outlets
- 6.12.1 General
- 6.12.2 Unthreaded piping
- 6.12.3 Piping outlet location
- + 6.13 Drip and dirt pockets
- 6.13.1 Dirt pocket installation
- 6.13.2 Size
- 6.13.3 Location
- 6.13.4 Termination
- 6.13.5 Drip pocket installation
- 6.13.6 Additional requirements
- + 6.14 Prohibited practices
- 6.14.1 Defective piping
- 6.14.2 Nesting
- 6.14.3 Left and right hand threads
- 6.14.4 Union or combination of fittings
- 6.14.5 Field bending
- 6.14.6 Electrical
- 6.14.7 Fittings
- 6.14.8 Meter connection
- + 6.15 Underground piping and tubing
- 6.15.1 Prohibition
- 6.15.2 Piping connection
- 6.15.3 Tubing connection
- 6.15.4 Location depth
- 6.15.5 Trench
- 6.15.6 Backfill
- 6.15.7 Location
- 6.15.8 Building entrance
- 6.15.9 Outside wall
- 6.15.10 Under pavement
- 6.15.11 Vent pipe
- 6.15.12 Connection to plastic
- 6.15.13 Gas supply to plastic piping or tubing
- 6.15.14 Plastic piping or tubing
- 6.15.15 Common trench
- + 6.16 Protection of piping and tubing
- 6.16.1 Corrosive atmospheres
- 6.16.2 Underground
- 6.16.3 Movement
- 6.16.4 Hollow walls or partitions
- 6.16.5 Appliance doors or covers
- 6.16.6 Galvanic corrosion
- 6.16.7 Exterior wall above ground
- 6.16.8 Masonry or concrete
- 6.16.9 Sleeve use
- 6.16.10 Sleeve material
- 6.16.11 Plastic material
- 6.16.12 Plastic pipe and tubing support
- 6.16.13 Plastic direct sunlight exposure
- 6.16.14 CSST
- 6.16.15 Vehicle protection
- 6.16.16 Vehicle protection requirements
- + 6.17 Identification of piping or tubing
- 6.17.1 General
- 6.17.2 Pressure in excess of 14 in w.c. (3.5 kP...
- 6.17.3 Residential buildings
- 6.17.4 Two or more gas meters
- + 6.18 Manual shut‑off valves
- 6.18.1 Certification or approval
- 6.18.2 Appliance manual shut-off
- 6.18.3 Appliance manual shut-off exception
- 6.18.4 Type and size
- 6.18.5 Several piping systems
- 6.18.6 Spring-loaded valve
- 6.18.7 Quick-disconnect
- 6.18.8 Adjoining buildings
- 6.18.9 Propane
- 6.18.10 Underground propane storage tank
- 6.18.11 Classroom, laboratory, or similar facil...
- 6.18.12 Classroom, laboratory, or similar facil...
- 6.19 Manual-reset valves
- + 6.20 Gas hose and fittings
- 6.20.1 Vented appliance
- 6.20.2 Vibration
- 6.20.3 Installation
- 6.20.4 Replacement
- 6.20.5 Metallic gas hose
- 6.20.6 Interconnected equipment
- 6.20.7 Transferring liquid propane
- 6.20.8 Propane applications
- + 6.21 Gas connectors
- 6.21.1 Certification
- 6.21.2 Installation
- 6.21.3 Corrugated metal gas connector
- 6.21.4 Additional application
- 6.21.5 Large gas utilization equipment
- 6.21.6 Commercial cooking appliance
- 6.21.7 Vented appliance
- 6.21.8 Outdoor gas appliance and manufactured h...
- 6.21.9 Portable outdoor appliances
- + 6.22 Testing of piping, tubing, hose, and fitti...
- 6.22.1 Requirements
- 6.22.2 Before connection requirements
- 6.22.3 After connection requirements
- 6.22.4 Valve train leak test
- 6.22.5 Addition to existing piping or tubing
- 6.22.6 Enclosed or concealed systems
- + 6.23 Purging of gas piping systems
- 6.23.1 Purging outdoors
- 6.23.2 Containing air
- 6.23.3 Removal of existing gas piping system
- 6.23.4 Purge discharging and operations
- 6.23.5 Flaring
- 6.23.6 Additional purging conditions
- 6.23.7 Purging indoors
- 6.23.8 Appliance purging
- 6.24 Purging gas from a piping or tubing system...
- + 6.25 Rooftop gas piping systems
- 6.25.1 Piping support
- 6.25.2 Tubing support
- 6.25.3 Expansion and flexibility
- + 6.26 Inspection
- 6.26.1 Plastic piping and tubing
- 6.26.2 Plastic piping and tubing joints
- + 6.27 Highway vehicles, recreational vehicles, m...
- 6.27.1 Hose connector
- 6.27.2 Propane piping
- 6.27.3 Shut-off valve
- 6.27.4 Hose
- 6.27.5 Connections
- + 7 Installation of specific types of appliances
- + 7.1 Boilers
- 7.1.1 Provincial requirement
- 7.1.2 Installation location
- 7.1.3 Clearances
- + 7.2 Generators, compressors/pressure boosters, ...
- + 7.2.1 General requirements
- 7.2.1.1 Certification body acceptance
- 7.2.1.2 Installation access
- 7.2.1.3 Venting and air minimum requirements
- 7.2.1.4 Housing codes
- 7.2.1.5 Housing ventilation
- 7.2.1.6 Foundation and framework
- 7.2.1.7 Rooftop installation
- 7.2.1.8 Installation protection
- 7.2.1.9 Installation protection
- + 7.2.2 Compressors/pressure boosters
- 7.2.2.1 Compliance and approval
- 7.2.2.2 Ventilation
- 7.2.2.3 Installation requirements
- 7.2.2.4 Installation location
- 7.2.2.5 Fittings
- 7.2.2.6 Discharge piping
- 7.2.2.7 Pressure booster
- 7.2.2.8 Pressure boosting compressors
- 7.2.2.9 Cylinder filling
- + 7.2.3 Emergency generators
- 7.2.3.1 Independent piping
- 7.2.3.2 Dedicated gas supply
- 7.2.3.3 Overpressure protection
- + 7.2.4 Non-motive engines and turbines
- 7.2.4.1 Certification
- 7.2.4.2 Supply piping sizing
- 7.2.4.3 Exhaust gas piping
- 7.2.4.4 Venting
- + 7.2.5 Additional requirements for gas engines a...
- 7.2.5.1 Ventilation location
- 7.2.5.2 Ventilation operation
- 7.2.5.3 Fire protection
- 7.2.5.4 Exhaust gas discharge
- 7.2.5.5 Exhaust gas piping
- 7.2.5.6 Exhaust gas discharge
- 7.2.5.7 Exhaust pipe termination
- 7.2.5.8 Exhaust pipe guarding
- 7.2.5.9 Exhaust piping limitations
- 7.2.5.10 Exhaust pipe clearances
- + 7.3 Carbon dioxide generators
- 7.3.1 Certification
- 7.3.2 Combustion air
- 7.3.3 Carbon dioxide production
- + 7.4 Commercial-type clothes dryers
- 7.4.1 Hot surface protection
- 7.4.2 Minimum clearances
- 7.4.3 Flexible exhaust ducting
- 7.4.4 Exhaust terminations
- 7.4.5 Exhaust duct limitations
- 7.4.6 Make-up air
- 7.4.7 Exhaust duct clearances
- + 7.5 Domestic-type clothes dryers
- 7.5.1 Exhaust duct requirements
- 7.5.2 Exhaust duct termination
- 7.5.3 Exhaust duct limitations
- 7.5.4 Minimum clearances
- + 7.6 Conversions
- 7.6.1 Minimum clearances
- 7.6.2 Conversion requirements
- 7.6.3 Chimney requirements
- + 7.7 Conversion burners
- 7.7.1 Conversion requirements
- 7.7.2 Mobile homes
- 7.7.3 Flame impingement
- + 7.8 Conversion of warm air furnaces
- 7.8.1 Installation
- 7.8.2 Bypass requirements
- 7.8.3 Secondary heating surfaces
- 7.8.4 Markings
- 7.8.5 Flue outlet material
- 7.8.6 Temperature limits
- + 7.9 Conversion of ranges
- 7.9.1 Control valve access
- 7.9.2 Burner location
- 7.9.3 Draft regulator
- 7.10 Counter appliances
- 7.11 Direct-vent appliances
- + 7.12 Furnaces used with cooling units
- 7.12.1 Cooling coil condensate
- 7.12.2 Parallel damper control
- 7.12.3 Furnace upstream requirements
- 7.12.4 Furnace downstream requirements
- + 7.13 Central furnaces
- 7.13.1 Installation
- 7.13.2 Minimum clearances
- 7.13.3 Return air inlets
- 7.13.4 Floor furnaces
- 7.13.5 Construction heat
- 7.13.6 Return air ducting
- + 7.14 Downflow furnaces
- 7.14.1 Marking
- 7.14.2 Floor openings
- 7.14.3 Enclosure air limitations
- + 7.15 Duct furnaces
- 7.15.1 Location
- 7.15.2 Duct access
- 7.15.3 Circulating air limitations
- 7.15.4 Control locations
- 7.15.5 Structural support
- 7.15.6 Minimum clearances
- + 7.16 Horizontal furnaces
- 7.16.1 Installation options
- 7.16.2 Attic space walkway
- 7.16.3 Attic limitations
- 7.16.4 Minimum clearances
- + 7.17 Wall furnaces (recessed heaters)
- 7.17.1 Combustible wall approval
- 7.17.2 Service access
- 7.17.3 Partition venting
- + 7.18 Construction heaters and torches
- 7.18.1 Location
- 7.18.2 Installation
- 7.18.3 Clearance to combustibles
- 7.18.4 Air supply
- 7.18.5 Piping
- 7.18.6 Temporary piping
- 7.18.7 Lessor responsibility
- 7.18.8 User responsibility
- 7.18.9 Installation limitations
- 7.18.10 Torch attendance
- + 7.19 Direct‑fired door air heaters
- 7.19.1 Installation references
- 7.19.2 Interlocking
- 7.19.3 Heated air direction
- 7.19.4 Installation references
- + 7.20 Direct‑fired make‑up air heaters (DFMAH)
- 7.20.1 Exhaust requirements
- 7.20.2 Sleeping areas
- 7.20.3 Exhaust air balance
- 7.20.4 System air balance
- 7.20.5 Mine shafts
- 7.20.6 Interlocking
- 7.20.7 Outside air
- 7.20.8 Automatic louvre interlocking
- 7.20.9 Intake location
- 7.20.10 Intake clearance to combustibles
- 7.20.11 Duct trapping
- 7.20.12 Elevator shaft or stairwell
- 7.20.13 CO Sensing
- 7.20.14 Kitchens
- + 7.21 Non-recirculating and recirculating direct...
- 7.21.1 Installation limitations
- 7.21.2 Sleeping areas
- 7.21.3 Functionality references
- 7.21.4 Clearance to combustibles
- 7.21.5 Supply air
- 7.21.6 Duct purge
- 7.21.7 Damper interlocks
- 7.21.8 Exhaust options and exfiltration
- 7.21.9 Exhaust interlocking
- 7.21.10 Location to combustibles
- 7.21.11 Fire alarm
- 7.21.12 Storage garages
- 7.21.13 Kitchens
- + 7.22 Direct gas-fired process air heaters (DFPA...
- 7.22.1 Location
- 7.22.2 Sleeping areas
- 7.22.3 Standard reference
- 7.22.4 Clearance to combustibles
- 7.22.5 Operating modes
- 7.22.6 Exhaust and relief – ventilation mode
- + 7.22.6.1 Design and Installation
- 7.22.6.2 Exfiltration
- 7.22.6.3 Relief openings
- 7.22.7 Exhaust and relief – Process mode
- + 7.22.7.1 Design and installation
- 7.22.7.2 Relief openings
- 7.22.7.3 Powered exhaust limitations
- 7.22.8 Spray area exhaust interlocking
- 7.22.9 Spray booth mode
- 7.22.10 Duct purge
- 7.22.11 Process mode
- 7.22.12 Ventilation mode purge
- 7.22.13 Access interlocking
- 7.22.14 Post process purge
- 7.22.15 Remote interlocking
- 7.22.16 Air intake location
- 7.22.17 Process minimum ventilation
- 7.22.18 Inspection and maintenance
- + 7.23 Infrared heaters
- 7.23.1 Unvented installation requirements
- 7.23.2 CO2 detection
- 7.23.3 Vented installation requirements
- 7.23.4 Vehicles
- 7.23.5 Aircraft repair areas
- 7.23.6 Aircraft hangers
- 7.23.7 Garages
- + 7.24 Room heaters
- 7.24.1 Bathroom heaters
- 7.24.2 Fireplace installation
- 7.24.3 Venting
- 7.24.4 Fireplace damper
- 7.24.5 Sleeping or public area installation
- 7.24.6 General Installation
- 7.24.7 Circulating type minimum clearances
- 7.24.8 Radiant type minimum clearances
- + 7.25 Decorative appliances and gas logs
- 7.25.1 Manufacture instructions
- 7.25.2 Fireplace installation
- 7.25.3 Venting
- 7.25.4 Bathroom and bedroom installation
- 7.25.5 Chimney damper
- + 7.26 Pool heaters
- 7.26.1 Installation location
- 7.26.2 Minimum clearances
- 7.26.3 Outdoor installation
- 7.26.4 Wall-mounted type
- 7.26.5 Outdoor type
- 7.26.6 Finned-tube outdoor installation
- 7.26.7 Indoor installation
- 7.26.8 Maintenance
- 7.26.9 Outdoor flue discharge
- + 7.27 Water heaters
- 7.27.1 Installation location
- 7.27.2 Pressure relief termination
- 7.27.3 Combustibles protection
- 7.27.4 Minimum clearances
- 7.27.5 Water supply
- 7.27.6 Return and combustion air
- 7.27.7 Return air infiltration
- + 7.28 Unit heaters
- 7.28.1 Suspended installation
- 7.28.2 Negative pressure
- 7.28.3 Garage installation
- 7.28.4 Clearance to combustibles
- + 7.29 Hotplates
- 7.29.1 Piping
- 7.29.2 Installation locations
- 7.29.3 Clearance to combustibles
- + 7.30 Incinerators
- 7.30.1 Chimney location
- 7.30.2 Wall-type installations
- 7.30.3 Draft regulator
- 7.30.4 Chimney connection
- 7.30.5 Vent guarding
- 7.30.6 Clearance to combustibles
- + 7.31 Lighting
- 7.31.1 Pendant type support
- 7.31.2 Wall installation
- 7.31.3 Clearance to combustibles
- 7.31.4 Ventilation
- + 7.32 Commercial cooking appliances
- 7.32.1 Floor mounting
- 7.32.2 Floor mount clearances
- 7.32.3 Floor mount construction
- 7.32.4 Side clearances
- 7.32.5 Top clearances
- 7.32.6 Fryer separation
- + 7.33 Residential-type ranges
- 7.33.1 Installation limitations
- 7.33.2 Floor mounting
- 7.33.3 Venting
- 7.33.4 Clearance to combustibles
- 7.33.5 Zero clearance requirements
- 7.33.6 New appliance clearances
- 7.33.7 Clearance reductions
- 7.33.8 Exhaust hoods
- + 7.34 Refrigerators
- 7.34.1 Minimum clearances
- 7.34.2 Direct vent
- 7.34.3 Unvented
- 7.35 Operation of appliances at shows, exhibiti...
- + 8 Venting systems and air supply for appliances...
- + 8.1 General
- 8.1.1 Requirements
- 8.1.2 Direct vent exceptions
- 8.1.3 Air supply interference
- 8.1.4 Input reference
- 8.1.5 Combustion air
- + 8.2 Air-supply determination for central-heatin...
- 8.2.1 Requirements
- 8.2.2 Sizing
- 8.2.3 Input exceptions
- 8.2.4 Other exceptions
- 8.2.5 Free area sizing
- Table 8.1
- Table 8.2
- Table 8.3
- Table 8.4
- 8.2.6 Enclosure volume
- + 8.3 Air-supply openings and ducts
- 8.3.1 General requirements
- 8.3.2 Duct type
- 8.3.3 Non-ducted openings
- 8.3.4 Combustion-air supply devices
- 8.3.5 Inlet opening
- 8.3.6 Inlet location
- 8.3.7 Inlet clearances
- + 8.4 Air-supply requirements for appliances havi...
- 8.4.1 Location
- 8.4.2 With draft control device
- 8.4.3 Without draft control device
- 8.4.4 Combination
- 8.4.5 Discharge opening
- + 8.5 Air-supply dampers, louvres, and grilles
- 8.5.1 Free area calculation
- 8.5.2 Minimum aperture size
- 8.5.3 Manual dampers and louvres
- 8.5.4 Automatic dampers and louvres
- 8.5.5 Automatic combustion air damper
- 8.5.6 Emergency generators, stand-by generators...
- 8.6 Conditions created by exhaust fans, air-sup...
- 8.7 Engineered installations
- + 8.8 Air supply by mechanical means
- 8.8.1 Airflow sensing
- 8.8.2 Make-up air heater
- + 8.9 Appliance venting
- 8.9.1 General exceptions
- 8.9.2 Appliance location
- 8.9.3 Fasteners
- 8.9.4 Hangers
- 8.9.5 Plastic vent inspection
- 8.9.6 Plastic vent type
- + 8.10 Methods of venting appliances
- 8.10.1 Effective venting
- 8.10.2 Chimney applications
- 8.10.3 Venting system
- 8.10.4 Special venting system
- 8.10.5 Draft control device location
- 8.10.6 Positive venting limitations
- 8.10.7 Type B vent
- 8.10.8 Type BW vent
- 8.10.9 Type L vent
- 8.10.10 Type L in lieu of type B
- 8.10.11 Incinerator venting
- 8.10.12 Vent location limitations
- 8.10.13 Vent joints and seams
- 8.10.14 Special venting limitations
- 8.11 Vent and chimney requirements
- + 8.12 Chimneys
- 8.12.1 Code requirements
- 8.12.2 Chimney flue examination
- 8.12.3 Connection to solid fuel flues
- 8.12.4 Connection to liquid fuel flues
- 8.12.5 Two or more openings
- 8.12.6 Connection to gas fuel flues
- 8.12.7 Chimney clean-outs
- 8.12.8 Masonry chimneys
- 8.12.9 Unsafe chimneys
- 8.12.10 Chimney liner
- 8.12.11 Semi-detached house venting
- + 8.13 Vent and chimney sizing
- 8.13.1 Sizing
- 8.13.2 Multiple appliance venting
- 8.13.3 Vent shape
- + 8.14 Vent and chimney termination
- 8.14.1 Wind consideration
- 8.14.2 Vent minimum distances
- 8.14.3 Positive vent pressure minimum distances...
- 8.14.4 Chimney minimum distances
- 8.14.5 Pitched roof distances
- 8.14.6 Height above appliance
- 8.14.7 Wall furnace vent height
- 8.14.8 Vent termination limitations
- 8.14.9 Direct-vent clearances
- 8.14.10 Outdoor pool heater flue
- 8.14.11 Termination cap
- 8.14.12 Wall termination vent limitations
- 8.14.13 Dormant vent installation
- + 8.15 Vent and chimney support
- 8.15.1 Independent support
- 8.15.2 Manufacturer’s instructions
- 8.15.3 Direct connection to flue outlet or draf...
- 8.15.4 Double to single wall adapter
- 8.15.5 Single-wall vent connector
- + 8.16 Vents and chimneys serving two or more app...
- 8.16.1 Connection locations
- 8.16.2 Common vent connector
- + 8.17 Vents outside buildings
- 8.17.1 Natural-draft type
- 8.17.2 Type B or Type L
- + 8.18 Vent connectors
- 8.18.1 Materials without dilution air
- 8.18.2 Materials for incinerators
- 8.18.3 Materials with dilution air
- 8.18.4 Minimum size
- 8.18.5 Size change
- 8.18.6 Size change calculations
- 8.18.7 Multiple appliances
- 8.18.8 Size change location
- 8.18.9 Special venting system minimum clearance...
- 8.18.10 Type B minimum clearances
- 8.18.11 Appliance minimum clearances
- 8.18.12 Combustible wall or partition penetrati...
- 8.18.13 Combustible wall protection
- 8.18.14 General installation
- 8.18.15 Fasteners
- 8.18.16 General installation for type B
- 8.18.17 No dips or sags
- 8.18.18 Converted furnace or boiler
- 8.18.19 Horizontal design
- 8.18.20 Hanger support
- 8.18.21 Unheated spaces
- 8.18.22 General construction
- 8.18.23 Floor or ceiling limitations
- + 8.19 Chimney connections
- 8.19.1 Location above clean-out
- 8.19.2 Connection to chimney
- 8.19.3 Cleaning sleeve
- 8.19.4 Chimney liner connection
- 8.20 Size and height of interconnected vent con...
- + 8.21 Multi-storey venting
- 8.21.1 Common gas vents
- 8.21.2 Appliance location and combustion air
- 8.21.3 Location exemption for one dwelling unit...
- 8.21.4 Return air requirements
- 8.21.5 Vent size and type
- 8.21.6 Replacement appliances
- 8.22 Dampers and attachments
- + 8.23 Draft hoods
- 8.23.1 Zero over-fire draft appliances
- 8.23.2 Positive over-fire or induced draft appl...
- 8.23.3 Appliance supplied draft hood
- 8.23.4 Approved design
- 8.23.5 Outlet size
- 8.23.6 Location to combustion air
- 8.23.7 Installation orientation
- 8.23.8 Draft regulators
- + 8.24 Venting arrangements
- 8.24.1 Exclusions
- 8.24.2 Power venters
- 8.24.3 Vent connectors
- 8.24.4 Exhaust systems
- 8.24.5 Venting directly into space
- 8.24.6 Multiple appliances
- 8.25 Draft regulators
- + 8.26 Automatic vent damper or automatic flue da...
- 8.26.1 Integral component
- 8.26.2 Vent types
- 8.26.3 Thermally actuated vent damper
- 8.26.4 Appliance installation
- + 8.27 Manually operated flue dampers
- 8.27.1 Limitations for use
- 8.27.2 Pressure point adjuster
- + 8.28 Installation of draft-control devices
- 8.28.1 Installation requirements
- 8.28.2 Installation orientation
- + 8.29 Induced- or forced-draft devices
- 8.29.1 Failure provisions
- 8.29.2 Water heater size limitation
- + 8.30 Venting of appliances into canopies
- 8.30.1 General requirements
- 8.30.2 Appliance interlocking
- 8.30.3 Multiple appliance interlocking
- 8.30.4 Booster water heater
- + 8.31 Heat reclaimers
- 8.31.1 Installation requirements
- 8.31.2 Commercial or industrial requirements
- 8.32 Overpressure protection for engine venting...
- 8.32.1 Overpressure forces
- 8.32.2 Protection of fabricated venting systems...
- 8.32.3 Termination location of over-pressure re...
- + 9 Natural gas compressors and cylinders
- + 9.1 Installation of compressors
- 9.1.1 Applicability
- 9.1.2 Protection
- 9.1.3 Installation occupancy
- 9.1.4 Exposure
- 9.1.5 Vibration isolation
- 9.1.6 Component pressure rating
- 9.1.7 Supply capacity
- + 9.2 Requirements for cylinders
- 9.2.1 Qualification
- 9.2.2 Maximum capacity
- 9.2.3 Marking
- 9.2.4 Requalification
- 9.2.5 Protection
- + 9.3 Cylinder filling and cylinders
- 9.3.1 Visual inspection
- 9.3.2 Maximum pressure
- 9.3.3 Filling operations
- 9.3.4 Filling manifold
- 9.3.5 Indoor filling
- 9.3.6 Signage
- + 9.4 Cylinder storage
- 9.4.1 Clearance to fuels
- 9.4.2 Storage cabinet
- 9.4.3 Cabinet design
- 9.4.4 Clearance to property line
- 9.4.5 Protection
- 9.4.6 Cylinder valve
- + 9.5 Cylinders connected for use
- 9.5.1 Indoor safety
- 9.5.2 Indoor location
- 9.5.3 Connection location
- + 10 Residential fuelling appliances (RFAs) and v...
- + 10.1 Installation
- 10.1.1 Vehicle refuelling appliance (VRA) insta...
- 10.1.2 RFA installation
- 10.1.3 VFA installation
- 10.1.4 VFA exposure
- 10.1.5 VFA support
- 10.1.6 Protection
- 10.1.7 Indoor fuelling
- 10.1.8 Ventilation
- + 10.2 Pressure relief devices and other vents an...
- 10.2.1 Vent discharge
- 10.2.2 Vent termination
- 10.2.3 Vent pipe sizing
- + 10.3 Piping, tubing, and hose
- 10.3.1 Requirements
- 10.3.2 Restrictions
- 10.3.3 Fittings
- 10.3.4 Support
- 10.4 Testing of piping, tubing, gas hose, and f...
- 10.5 Installation of safety equipment, signs, a...
- 10.6 Refuelling of vehicles
- + Annex A (informative)
- A.1 General
- + A.2 Description of tables
- A.2.1 Outlet capacity
- A.2.2 Natural gas quality
- A.2.3 Table applicability
- A.2.4 Fitting allowance
- A.2.5 Tubing type
- A.2.6 Relative density
- + A.3 Use of capacity tables
- A.3.1 Size determination
- A.3.2 Demand determination
- A.3.3 Pressure determination
- A.3.4 Length determination
- A.3.5 Formulae
- A.3.6 Row choice
- A.3.7 Column choice
- A.3.8 Correct size
- A.3.9 Repeat
- A.4 Bends, fittings, and valves expressed in eq...
- Table A.1 a)
- Table A.1 b)
- Table A.2 a)
- Table A.2 b)
- Table A.3 a)
- Table A.3 b)
- Table A.4 a)
- Table A.4 b)
- Table A.5 a)
- Table A.5 b)
- Table A.6 a)
- Table A.6 b)
- Table A.7 a)
- Table A.7 b)
- Table A.8 a)
- Table A.8 b)
- Table A.9 a)
- Table A.9 b)
- Table A.10 a)
- Table A.10 b)
- Table A.11 a)
- Table A.11 b)
- Table A.12 a)
- Table A.12 b)
- Table A.13 a)
- Table A.13 b)
- Table A.14 a)
- Table A.14 b)
- Table A.15
- Table A.16 a)
- Table A.16 b)
- Table A.17
- + Annex B (informative)
- B.1 General
- + B.2 Description of tables
- B.2.1 Outlet capacity
- B.2.2 Propane quality
- B.2.3 Table applicability
- B.2.4 Fitting allowance
- B.2.5 Tubing type
- + B.3 Use of capacity tables
- B.3.1 Size determination
- B.3.2 Demand determination
- B.3.3 Pressure determination
- B.3.4 Length determination
- B.3.5 Formulae
- B.3.6 Row choice
- B.3.7 Column choice
- B.3.8 Correct size
- B.3.9 Repeat
- B.4 Bends, fittings, and valves expressed in eq...
- Table B.1 a)
- Table B.1 b)
- Table B.2 a)
- Table B.2 b)
- Table B.3 a)
- Table B.3 b)
- Table B.4 a)
- Table B.4 b)
- Table B.5 a)
- Table B.5 b)
- Table B.6 a)
- Table B.6 b)
- Table B.7 a)
- Table B.7 b)
- Table B.8 a)
- Table B.8 b)
- Table B.9 a)
- Table B.9 b)
- Table B.10 a)
- Table B.10 b)
- Table B.11 a)
- Table B.11 b)
- Table B.12
- + Annex C (informative)
- + C.1 General
- C.1.1 Table applicability
- C.1.2 Depressurization
- C.1.3 Depressurization restrictions
- + C.2 General venting requirements (GVRs)
- C.2.1 Vent category
- C.2.2 Vent exposure
- C.2.3 Limitations
- C.2.4 Bend allowance
- C.2.5 Vent connector restrictions
- C.2.6 Vertical offset
- C.2.7 High altitude
- C.2.8 Modulating inputs
- C.2.9 Common venting
- C.2.10 Liner requirements
- C.2.11 Liner capacity
- C.2.12 Total height single storey
- C.2.13 Total height multiple storey
- C.2.14 Total height lowest storey
- C.2.15 Interpolation and extrapolation
- C.2.16 Preference
- Table C.1
- Table C.2
- Table C.3
- Table C.4
- Table C.5
- Table C.6
- Table C.7
- Table C.8
- Table C.9
- Figure C.1
- Figure C.2
- Figure C.3
- Figure C.4
- Figure C.5
- Figure C.6
- Figure C.7
- Figure C.8
- Figure C.9
- Figure C.10
- Figure C.11
- Figure C.12
- Figure C.13
- + Annex D (informative)
- + 12.4.15 Customers’ meters and service regulator...
- 12.4.15.1
- 12.4.15.2
- 12.4.15.3
- 12.4.15.4
- 12.4.15.5
- 12.4.15.6
- 12.4.15.8
- 12.4.15.9
- 12.4.15.10
- + Annex E (informative)
- + E.1 Piping design sizing (imperial)
- E.1.1 General (imperial)
- E.1.2 Size determination from Table A.2
- E.1.3 Size determination from Table A.3
- E.1.4 Relative density
- + E.2 Piping design sizing (metric)
- E.2.1 General (metric)
- E.2.2 Size determination from Table A.2
- E.2.3 Size determination from Table A.3
- E.2.4 Relative density
- + Annex F (informative)
- Figure F.1
- Figure F.2
- Figure F.3
- + Annex G (informative)
- G.1 General
- G.2 Gas piping to rooftop units
- + Annex H (normative)
- H.1 General
- H.2 Applicability
- H.3 No smoking
- H.4 Sources of ignition
- H.5 Restrictions
- H.6 Exposure
- H.7 Procedure
- + Annex I (informative)
- + I.1 Abbreviations
- I.1.1 Organizations
- I.1.2 Words and phrases
- I.2 Properties of fuels for an average commerci...
- Table I.1
- Table I.2
- Table I.3
- Table I.4
- Table I.5
- + Annex J (normative)
- + J.1 General
- J.1.1 Application
- J.1.2 Procedure
- J.1.3 Results
- + J.2 Acceptance criteria
- J.2.1 Weld crown
- J.2.2 Incomplete fusion
- J.2.3 Undercut
- J.2.4 Cracks and arc burns
- J.2.5 Unequal leg length — Fillet welds
- Annex K (informative)
- + Annex L (informative)
- L.1 Recommended requirements
- + Annex M (normative)
- M.1 Application
- M.2 Exposure
- M.3 Purpose
- M.4 Marking
- M.5 Installation
- M.6 Operation
- M.7 Certification
- M.8 Carbon monoxide
- M.9 Maximum carbon monoxide
- M.10 Protection
- M.11 Fire extinguisher
- + Annex N (informative)
- + N.1 Compressors/pressure boosters
- N.1.1 Low pressure cut off
- N.1.2 Vibration isolation
- N.1.3 High gas pressure limit control
- N.1.4 Application
- + N.2 Engines and turbines
- N.2.1 Emergency generators
- N.2.2 Requirements
- N.2.3 Safety shut-off valves for input up to 12...
- N.2.4 Pressure safety devices
- N.2.5 For input greater than 12.5 MMBtu/h (3.66...
- N.2.6 Overcrank protection
- N.2.7 Inlet pressure regulator
- N.2.8 Overpressure protection
- N.2.9 Venting of pressure control devices
- + N.3 Additional requirements for engines and tur...
- N.3.1 Compliance
- N.3.2 Gas detection
- N.3.3 Rating plate
- + Annex O (informative)
- 1.1 Inclusions [Substitution]
- 1.7 Application [New]
- 2 Reference publications [Modification]
- 4.3.1 Initial installation [Modification]
- 4.3.2 User instructions [Modification]
- 4.3.3 Manufacturer instructions [Modification]
- 4.3.4 Replacement parts [Modification]
- 4.3.5 Appliance conversion [Modification]
- 6.1.3 Welding [New]
- 6.2.10 Minimum working pressure [Modification]
- 6.4 Volume of gas to be used for sizing gas pip...
- 6.4.1 Total volume [Deleted]
- 6.4.2 Volume determination [Deleted]
- 6.4.3 Diversity load [Deleted]
- 6.8.3 Piping support [Modification]
- 6.8.6 Filter requirements [Modification]
- 6.8.10 Test ports [Modification]
- 6.8.11 Air and oxygen [New]
- 6.9.2 Type [Modification]
- 6.9.4 Welding acceptance criteria [Substitution...
- 6.13.1 Dirt pocket installation [Modification]
- 6.13.5 Drip pocket installation [Modification]
- 6.18.1 Certification or approval [Addition]
- 6.18.4 Type and size [Modification]
- 6.18.5 Several piping systems [Modification]
- 6.20.5 Metallic gas hose [Modification]
- 6.20.6 Interconnected equipment [Modification]
- 6.22.1 Requirements [Modification]
- 6.22.2 Before connection requirements [Substitu...
- Table 6.3 [Modification]
- 6.22.7 Pneumatic testing [New]
- 6.22.8 Hydrostatic testing [New]
1.1 Inclusions
This Code applies to the installation of
a) appliances, equipment, components, and accessories where gas is to be used for fuel purposes;
b) piping and tubing systems extending downstream from the termination of the utility installation or from any equipment extending downstream from the outlet of any propane container pressure regulator (commonly referred to as “first-stage regulator”);
c) vehicle-fuelling appliances and associated equipment meeting the requirements of an appliance or the intended use of the appliance to fill a natural-gas-fuelled vehicle; and
d) stationary gas engines and turbines.
1.2 Exclusions
This Code does not apply to
a) marine or pipeline terminals;
b) gas where used as a feedstock in petroleum refineries or chemical plants;
c) utility pipeline distribution and transmission pipelines;
d) storage and handling of liquefied natural gas or underground formations for natural gas;
e) the installation of natural gas vehicle (NGV) fuel systems, containers, and refuelling stations;
f) the storage and utilization of compressed natural gas on boats;
g) the installation of vehicle-refuelling stations as defined by CSA B108.1;
h) refrigerated storage or underground formations for propane;
i) propane used on boats;
j) propane used as a propellant in aerosol containers;
k) butane fuel cylinders of 6.2 oz (175 g) capacity or less;
l) the installation of containers and equipment to be used for propane in distribution locations and filling plants and on tank trucks, tank trailers, and cargo liners; and
m) propane used as refrigerant.
1.3 Fuel
Where the term “gas” is used, the requirements of this Code include, and apply equally to, any of the following gases or mixtures of them: natural gas, manufactured gas, or mixtures of propane gas and air, propane, propylene, butanes (normal butane or isobutane), butylenes, hydrogen, and hydrogen – natural gas blends.
1.4 No guarantee
This Code and any Standards referenced in it do not make or imply any assurance or guarantee with respect to the life expectancy, durability, or operating performance of equipment and materials referenced in the Code.
1.5 Units of measure
The values given in yard/pound units are the standard. This Code contains SI (metric) equivalents to yard/pound units so that the Code can be used in SI (metric) units. SI (metric) equivalents may be approximate.
1.6 Terminology
In this Code, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Code; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the Code.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
You may comment on any section of this document by clicking the “Submit Comment” link at the bottom of the relevant section.