Z Installation requirements for oil- and gas-burning fired appliances in manufactured homes

Transcription

1 Z Installation requirements for oil- and gas-burning fired appliances in manufactured homes Z Draft Version 2, 6 January 2014 for TC Members Use Only 1

2 Z Installation requirements for oil- and gas-burningfired appliances in manufactured homes 1 Scope 1.1 This Standard applies to the factory installation of oil- and gas-burningfired appliances, and equipment, components, accessories, piping and tubing in manufactured homes and specially designed or modified units. Note: CAN/CSA-B149.1 and CAN/CSA-B149.2 should be consulted for installations not covered by this Standard. Specially designed or modified units include industrial or commercial trailers. 1.2 In CSA Standards, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; may is used to express an option or that which is permissible within the limits of the standard; and can is used to express possibility or capability. 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. Formatted: Font: 9 pt, Not Italic Formatted: Font: 9 pt Formatted: Font: 9 pt, Italic Formatted: Font: 9 pt Formatted: Font: 9 pt, Italic Formatted: Font: 9 pt 2 Reference publications This Standard refers to the following publications, and where such reference is made, it shall be to the edition listed below, including all amendments and addenda published thereto. CSA (Canadian Standards Association) CAN1-1.1-M81 (R2006) Domestic gas ranges Formatted: Font: 10 pt Formatted: Normal, Space Before: 0 pt, Line spacing: single, Don't keep with next, Tab stops: Not at 2.54 cm C Canadian Electrical Code, Part I B (R2009) Installation code for oil-burning equipment B (R2008) Oil-burning equipment: General requirements Z Draft Version 2, 6 January 2014 for TC Members Use Only 2

3 B (R2011) Vapourizing-type oil burners CAN/CSA-B Oil burners; atomizing-type B (R2011) Pressure atomizing oil burner nozzles B (R2011) Oil burning stoves and water heaters CAN/CSA-B Oil-fired warm air furnaces B (R2010) Oil-burning equipment: Steam and hot water boilers B (R2011) Portable industrial oil-fired heaters B (R2011) Portable liquid fuelled catalytic appliances B Portable pressurized type liquid petroleum fuelled camp stoves CAN3-B M86 (R2011) Portable kerosine-fired heaters Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold Formatted: Font: Bold B M1979 (R2006) Portable pressurized-type, liquid petroleum fuelled lamps and lanterns B Oil-fired warm-air heating appliances for mobile housing and recreational vehicles CAN/CSA-B M89 (R2010) Oil/gas-fired commercial/industrial pressure washers and steam cleaners Formatted: Font: Bold Formatted: Font: Bold B (R2008) Oil-burning equipment: Service water heaters for domestic hot water, space heating, and swimming pools B M1979 (withdrawn) Automatic flue-pipe dampers for use with oil-fired appliances CAN/CSA-B Natural gas and propane installation code CAN/CSA-B Propane storage and handling code ANSI/CSA (American National Standards Institute/Canadian Standards Association) ANSI Z Z Draft Version 2, 6 January 2014 for TC Members Use Only 3

4 Household cooking gas appliances Formatted: RefTitle ANSI Z /CSA Gas-fired central furnaces ANSI Z /CSA Gas water heaters Volume I, Storage water heaters with input ratings of 75,000 Btu per hour or less ANSI Z /CSA (R2011) Refrigerators Using Gas Fuel Formatted: RefTitle ANSI Z /CSA Connectors for gas appliances ANSI Z /CSA Gas clothes dryers Volume I, Type I clothes dryers ASME (The American Society of Mechanical Engineers) B (R2001) Pipe Threads, General Purpose, Inch B Malleable Iron Threaded Fittings: Classes 150 and 300 ASTM International (American Society for Testing and Materials) A53/A53M-06a Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless A (withdrawn) Standard Specification for Electric-Resistance-Welded Coiled Steel Tubing for Gas and Fuel Oil Lines B75M-99 (2005) Standard Specification for Seamless Copper Tube [Metric] B88M-05 Standard Specification for Seamless Copper Water Tube [Metric] CGA (Canadian Gas Association) 2.17-M91 (R2003) Gas-Fired Appliances for Use at High Altitudes 9.2-M88 (R2009) Manually Operated Shut-Off Valves for Gas Piping Systems ULC (Underwriters Laboratories of Canada) CAN/ULC-S642-M87 (R2000) Compounds and Tape for Threaded Pipe Joints Z Draft Version 2, 6 January 2014 for TC Members Use Only 4

5 3 Definitions In addition to the definitions specified in CSA Z , the following definitions shall apply in this Standard: Accessory a part that is capable of performing one or more independent functions and is certified separately from and contributes to the operation of the appliance or appliances that it serves. Appliance a device to convert gas into energy (including any component, control, wiring, piping, or tubing required to be part of the device). Certified (with respect to an appliance, component, or accessory, or to the manufacturer s installation instructions) investigated by a certification body and determined to be meeting the requirements of recognized standards or meeting accepted test result criteria. Component an essential part of an appliance. Direct vent (sealed combustion) appliance an appliance constructed so that all of the combustion air is supplied directly from, and the products of combustion are vented directly to, the outdoors by an independent enclosed passageway connected directly to the appliance. Monitor vent an awning-type window with an area of less than mm 2 located in a wall as close to the ceiling as possible and used for ventilation. Readily accessible capable of being reached quickly for operation renewal (resetting), servicing, or inspection without requiring a person to climb over or remove an obstacle or use a portable ladder. Roof jack that portion of a manufactured home heater flue or vent assembly (including the cap, insulating means, flashing, and ceiling plate) located in and above the roof of a manufactured home. 4 General requirements Except as otherwise provided in this standard, Appliancesappliances, accessories, components, equipment, and materials used in gas- and oil-burning fired appliance installations shall be certified for the purpose for which they are to be employedcomply with CAN/CSA-B149.1, CAN/CSA-B149.2 and CSA B139 as applicable regardless of limits to application in those standards related to mobile homes. Note: See also Clause 6 Note: The National Building Code of Canada references CSA B139.1 and CAN/CSA-B The exceptions provided in CSA B139.1 and CAN/CSA-B149.1 for mobile homes do not apply to manufactured homes. The provisions in this Standard are in addition to or exceptions to the requirements to the National Building Code of Canada, CSA B139.1 and CAN/CSA-B Electrical wiring and connections Electrical wiring and connections to gas-burning equipment installed in manufactured homes shall be in accordance with Rules to of the Canadian Electrical Code, Part I. Formatted: Font: Not Italic Formatted: Font: Italic Formatted: Font: Italic Formatted: Font: Italic Formatted: Font: Italic Z Draft Version 2, 6 January 2014 for TC Members Use Only 5

6 5 (6) Specific appliancesappliances 5.1 Appliance Standards (Z clause 4.1) Oil-fired appliances Oil-fired appliances and associated equipment shall meet the applicable requirements of the CSA B140 series of Standards (6.1 to 6.4) Gas-fired appliances Gas-burningfired appliances shall be certified as complying with the standards identified in Table 1. Appliance Cooking appliances Table 1 Gas-fired appliance standards (See Clause 5.1.2) Standards CSA CAN1-1.1 or ANSI Z Refrigerators ANSI Z /CSA 1.4 Clothes dryers ANSI Z21.5.1/CSA 7.1 Furnaces ANSI Z21.47/CSA 2.3 Water heaters ANSI Z /CSA 4.1 Formatted: Font: 11 pt Formatted: Centered Formatted: Font: 11 pt Formatted: Normal, Centered, Space Before: 0 pt, Line spacing: single, Don't keep with next, Tab stops: Not at 2.54 cm Formatted: Font: 11 pt Formatted: Normal, Space Before: 0 pt, Line spacing: At least 12 pt, Don't keep with next, Tab stops: Not at 2.54 cm 6.1 Ranges Ranges shall be certified to CSA CAN Gas clothes dryers Gas clothes dryers shall be certified to ANSI Z21.5.1/CSA Furnaces Furnaces shall be certified to ANSI Z21.47/CSA 2.3 and for use in manufactured homes. 6.4 Water heaters Water heaters shall be certified to ANSI Z /CSA 4.1 and for use in manufactured homes (6.5) Space-heating and water-heating gas-fired appliances for high altitudes Where the home is to b installed at an altitude greater than 610 m, Spacespace-heating and water-heating gas-burningfired appliances shall be certified to the applicable requirements of CGA Approval (Z /4.2) Use of appliances in manufactured homes As applicable, appliances shall be approved by the regulatory authority having jurisdiction for use in manufactured homes. Z Draft Version 2, 6 January 2014 for TC Members Use Only 6

7 5.2.2 (Z /4.11) Conversion Oil-burningfired appliances shall not be converted from one fuel to another except in accordance with the terms of their approval. 5.3 (6.6) Appliance installation general (6.6.1) GeneralInstalled components Appliances installation shall be installed in accordance with the appliance manufacturer s installation instructions and include all required components with which they are certified (6.10, Z /4.5) ApplianceInstallation and operating instructions An The manufacturer shall leave appliance s installation and operating instructions document shall be placed in the manufactured home by the home s manufacturer (6.6.2, Z /4.6) MountingSecurement Appliances shall be secured in place to avoid displacement and movement from vibration and road shock. 5.4 (6.7) AccessibilityAccess (6.7.1, Z /4.8.1) GeneralAccess for servicing and removal Appliances shall be installed in such a way that they are readily accessible and removable for cleaning, inspection, repair, adjustment, and replacement of components and accessories without removal of any permanent construction of the manufactured home (6.7.2) Sufficient room for burnerobservation of flame zone Provision shall be made to permit adequate observation of the flame zone.sufficient room to observe the burner shall be provided (6.7.3) External access (Z /4.10.2(b)) Access for servicing or removal of non-direct vent oil-fired space- and water heating appliances shall be from the outside of a manufactured home Where access for servicing or removal of a gas-burningspace- or water- heating appliance is from the outside of a manufactured home, the fasteners securing the access panel or door shall be not more than 1.25 m above the floor of the manufactured home (6.7.4) Internal access Where access for servicing or removal of a gas-burning fired water heater is from the inside of a manufactured home, a securely fastened access panel that creates an effective seal for preventing migration of gas or combustion products into the living quarters shall be provided. A warning label in accordance with Clause 12.5, shall be prominently attached to the access panel. 5.5 (6.8, Z /4.9) Clearances The cclearances between an appliance and adjacent combustible material shall not be less than the clearance specified on the appliance or 25 mm, whichever is greater., Z Draft Version 2, 6 January 2014 for TC Members Use Only 7

8 However, appliances more than 915 mm high shall have rear and side clearances 25 mm greater than the clearances specified on the appliance. The front enclosure shall also have rear and side clearances 25 mm greater than the clearances specified on the appliance if the clearances specified for the front enclosure are 50 mm or less. Note: Additional clearances allow for possible shifting or distortion of the appliance. They also enable allow access to the area around the appliance for cleaning out lint and similar accumulations. When clearances on the sides and top of an appliance exceed 50 mm, these spaces shall be framed in or guarded with non-combustible material. Note: This requirement is intended to prevent storage of combustibles, e.g., brooms and mops, against the appliance. Formatted: Font: 9 pt, Not Italic Formatted: Font: 9 pt, Italic 5.6 (6.9) Location General Every appliance shall be located in such a way that doors, drapes, or similar items cannot be placed or swing closer to the appliance than the clearance specified on the appliance (6.9.2, Z /4.10.2) Location of non-direct vent gas-fired appliances furnaces and water heaters Gas-fired ffurnaces and water heaters that are not non-direct vent appliances shall be installed in an airtight enclosure ventilated to the air outside the manufactured home. The following requirements shall also apply: (a) air for combustion and ventilation from outside the manufactured home shall be supplied in accordance with Clause 7.1; (b) accessibility shall be provided as specified in Clause 6.7; (c) when a furnace is installed, return air shall be ducted directly to the furnace; and (d) where used, ducts shall comply with CSA Z Formatted: Tab stops: 0.75 cm, Left 6 (7) Air supply for non-direct vent appliances 7.1, Z /5.1 Combustion and ventilation air for furnaces and hot water appliances A supply of fresh air for combustion and ventilation shall be ensured by providing adequate free air passage in the manner recommended by the appliance manufacturer in accordance with the appliance certification. If no recommendation is provided, 1100 mm 2 of free area per kw input shall be provided. Approximately one-half of the required area shall be taken through or within 450 mm of the roof.. The remaining half shall be taken through or within 150 mm of the floor. No no part of this half of the required area shall be below the relief opening of the draft hood.the entrance of the air intake assembly shall be guarded, shielded, or located in a way that excludes rain, snow, debris, vermin, and birds. Note: An arrangement for providing combustion air not based on the manufacturer s recommendation of provision of 1100 mm 2 of free area per kw of input may be used if certified for use with the appliance. 6.1 (7.2, Z /5.1) Combustion air for appliances other than furnaces and hot water appliances A supply of fresh air for combustion shall be ensured by providing 1100 mm 2 of free area per kw input in the form of a monitor vent, window, or rooftop ventilator A warning label as specified in Clause 12.2Clause 11.2 shall be placed next to the openings installed to provide required combustion air. Formatted: Normal, Line spacing: At least 12 pt Formatted: Indent: Left: 0 cm, First line: 0 cm, Tab stops: Not at 0.75 cm Z Draft Version 2, 6 January 2014 for TC Members Use Only 8

9 Note: (Z /5.3). CSA B139 requires that combustion air be provided to the burners of built-in surface oil-fired cooking units Formatted: Font: 9 pt 7.3 Replacement air for gas-fired clothes dryers A supply of replacement air for a gas-fired clothes dryer shall be provided in the area where the dryer is located. The opening through which the air is supplied shall be at least twice the area of the dryer exhaust. A warning label as specified in Clause 12.2 shall be placed next to the opening. 7 (8) Venting 8.1 General 7.1 (8.1.1) Outlet site Oil- and Gasgas-burningfired appliances shall not vent products of combustion underneath the manufactured home. 7.2 (8.1.2) Installation General Vents, roof jacks, and special fittings certified as component parts of an appliance shall be installed in accordance with the terms of the appliance certification. Joints in the venting system located within the structure of the manufactured home shall be readily accessible for field inspection (8.2) Roof jack extension When a vent is to be extended in the field, the lower portion of the roof jack assembly (inner and outer) shall be mechanically fastened to the appliance at the manufactured home factory and the portion protruding through the roof shall be complete in every respect, including roof sealing. The vent opening shall be weather capped until the final assembly is installed. A warning label as specified in Clause 12.2 shall be placed in a conspicuous location next to the appliance. Note: Roof jack extensions may be shipped with the home for field installation Joints The joints of vents and vent connections shall be secure, rigid, tight, and installed in a manner consistent with industry standards Flue gas vents Flue gas vents shall terminate at least 1.8 m from any combustion air inlet. The bottom of the vent cap on flue gas vents shall be at least 610 mm above the highest point where the vent passes through the roof. 7.3 (8.1.5) Single-wall metal ventvent type Except for gas-fired clothes dryers, a single-wall metal vent shall not be used unless it is a component part of a certified appliance or as specified in Clause 8.3. Z Draft Version 2, 6 January 2014 for TC Members Use Only 9

10 8.3 Cooking appliances Ventilation In addition to having the openings required by Clause 7.2, the area in which a gas-fired cooking appliance is located shall be ventilated by an opening that (a) is not less than 8065 mm 2 in cross-sectional area; and (b) has a minimum dimension of 50 mm. The opening may be single-walled. Note: Mechanical ventilating equipment that is installed in accordance with the appliance manufacturer s instructions may also be used. Formatted: Normal, Indent: Left: 0 cm, Tab stops: 0.75 cm, Left + Not at 1.5 cm Gravity or mechanical ventilation Gravity or mechanical ventilation shall be installed in the same room as the cooking appliance(s) and be a horizontal distance of not more than 3 m from the vertical front of each appliance Ducts Ducts from metal hoods shall be made of non-combustible material and installed in a manner that precludes trapping of the products of combustion. Such ducts shall extend through the wall or roof to the outside air. 8 (Z /7) Oil tanks and piping systems 8.1 (Z /7.1) On-site installation instructions Installation instructions for oil tanks and piping systems installed on site shall be provided by the manufacturer to the contractor, who shall comply with local fuel oil installation codes. 8.2 (Z /7.2) Access The manufacturer of an appliance shall provide ssuitable access for routing oil lines between the appliance and an exterior oil tank (if applicable)shall be provided without the need to pass through ducts or vents. Formatted: Font: 12 pt Formatted: Font: 12 pt 8.3 (Z /4.3) Protection Oil lines shall be protected from mechanical damage by guards or by appropriate location. 9 Piping, tubing, and fittings for gas systems 9.1 GeneralApplication Piping, tubing, and fittings shall be new. Clause 9 applies to piping and tubing and fittings for gas-fired appliances 9.2 Materials Steel piping Steel piping shall be black and comply with ASTM A53/A53M. Z Draft Version 2, 6 January 2014 for TC Members Use Only 10

11 9.2.2 Fittings Fittings used with steel pipe shall be malleable iron or black steel and comply with ANSI B16.3. Fittings shall be designed for a minimum gauge pressure of 860 kpa Schedule 40 piping Piping shall be at least Schedule 40 for operating gauge pressures up to 860 kpa. Note: See also Clause Tubing Tubing shall be seamless copper, brass, or steel. Type GP copper tubing shall comply with ASTM B75M. Type K and L copper tubing shall comply with ASTM B88M. Copper tubing shall be internally tinned. Steel tubing shall comply with ASTM A539. Note: See also Clause Tubing fittings Tubing fittings shall be rated for a working gauge pressure of up to 860 kpa Corrosion protection Steel tubing located where it will be subject to corrosion shall be zinc coated or painted with an asphaltic material. Brazed and flared joints shall be similarly protected. 9.3 Joints and connections General Piping joints shall be threaded, flanged, welded, brazed, or made with approved steel compression fittings or couplings Threading Pipe and pipe fitting threads shall be tapered and comply with Table 1 and ASME B Joints Joints on seamless copper, brass, or steel tubing shall be flare joints or brazed with a material not containing phosphorous and having a melting point exceeding 525 C Flare nuts When used in a part of the tubing system that is outside the manufactured home, flare nuts shall be of the forged type Jointing compounds When used, jointing compounds shall be certified to CAN/ULC-S642 and appropriate for use with natural gas and propane Gasket material Gaskets shall be made of neoprene or another inert material resistant to the action of the gas employed. Natural rubber shall not be used. Z Draft Version 2, 6 January 2014 for TC Members Use Only 11

12 9.2 (9.4) Piping and, tubing sizeand valves (9.4.1) Piping and tubing size - Generalgeneral Piping and tubing shall be of a diameter sufficient to provide a supply of gas that meets the requirements of demand and pressure at the point of use. The piping system shall be sized for natural gas Heating appliances Piping supplying heating appliances with an input of 22 kw or more shall be not less than NPS-1 and the drop or riser shall be not less than NPS-3/ (9.2.7) Flexible connectors length Flexible metal connectors shall be certified to ANSI Z21.24/CSA 6.10 and may be used in the installation of ranges, refrigerators, and dryers. When flexible metal connectors are used on ranges, such connectors shall be: (a) a minimum of NPS-1/2 nominal ID and a minimum length of 1220 mm when used on for the installation of ranges, and (b) such connectors shall be a minimum of NPS-3/8 nominal ID and a minimum length of 1220 mm when used on for the installation of refrigerators and dryers (9.2.8) Shut-off valve The individual low-pressure gas shut-off valves required by Clause shall be certified to CGA Loss of pressure Systems shall be designed so that the loss of pressure between the meter and the appliances shall not exceed kpa. Piping shall meet the size requirements of Table 2. Tubing shall meet the size requirements of Table Installation pipingpiping installation for gas systems Note: This Clause governs installation of gas piping certified with a manufactured home but does not apply to piping certified as a component of an appliance GeneralApplication Installation shall comply with CAN/CSA-B149.1 or CAN/CSA-B149.2, as applicable. Clause 10 applies to installation of piping for gas-fired appliances Connections (10.2) Appliance connections for shipment Gas appliances to be installed by a manufactured home manufacturer may be connected in the factory to a complete gas piping system terminating at the perimeter of the manufactured home for connection to a fuel supply Disconnection and reconnection (10.3) Disconnection for shipment After leak testing in accordance with Clause 11.1, the gas piping system, including the vertical risers to each appliance, may be disconnected as a sub-assembly for shipment. The vertical Z Draft Version 2, 6 January 2014 for TC Members Use Only 12

13 gas risers shall be disconnected upstream of the gas shut-off valve. Joints shall be fitted with dust caps or equivalent protection during shipment (13) Gas supply pipingreconnection instructions When gas supply piping is disassembled as a sub-assembly in the factory for shipment in accordance with Clause 10.3, manufacturers shall include complete instructions for reattachment of the sub-assembly on site, including (a) proper support of the piping in accordance with Clause 10.16Clause ; and (b) on-site pressure and leak testing in accordance with Clause 11.5Clause (10.13) Gas-tight outlet When an appliance is not connected to an outlet of a piping system, the outlet shall be made tight as follows: (a) when the gauge pressure does not exceed 3.5 kpa: (i) nipple and cap; or (ii) threaded metal plug; and (b) when the gauge pressure exceeds 3.5 kpa: a shut-off valve, which shall be securely closed and made gas-tight with a cap or threaded metal plug Gas line, piping, tubing and connection locations 10.5 Prohibited gas line locations Gas lines shall not be installed inside floors or ceilings Location of piping and tubing Piping and tubing (other than piping and tubing that passes through walls or partitions) shall not be installed inside walls or partitions Location of piping and tubing joints Piping and tubing joints shall not be located in floors, walls, partitions, or similarly concealed unvented spaces. Joints shall not be used in branch supply lines within living spaces of manufactured homes, except at the connection to the appliance (10.6) Gas line installation through chassis Gas lines may be routed through the chassis if the (a) area is not used for heating ducts or return air ducts; (b) area does not contain insulation; (c) area is vented to the outside air; and (d) gas lines and connections are readily accessible for inspection and replacement (10.11) Furnace gas supply line A gas line supplying a manufactured home furnace may be routed through a combustion air or fresh air makeup opening in the furnace base if (a) the gas line through the furnace base consists of a single piece of pipe or tube that complies with Clause 10; and (b) connections to the line are 50 mm above the level of the top of the furnace base plate and 50 mm below the lowest level of the floor or furnace base plate extension (10.9) Branch lines connections A branch line shall be connected to the supply piping or tubing only in an area vented to the outside and gas-tight to the inside. Z Draft Version 2, 6 January 2014 for TC Members Use Only 13

14 10.4 Piping projection The unthreaded portion of piping outlet shall extend at least 25 mm through a finished ceiling or wall and at least 50 mm, but not more than 150 mm, through a floor (10.12). Securement All parts of a gas supply assembly shall be designed and secured so as to prevent the parts from working loose during transit Piping support Gas piping shall be adequately supported by galvanized or equivalently protected metal straps or hangers at intervals of not more than 1.25 m (except where adequate support is provided by the structure) and shall be secured within 150 mm of either side of each riser to prevent damage to the appliance gas valve Protection (10.12) Protection of lines beneath home Gas lines located beneath a manufactured home shall be firmly fastened and protected from damage by mechanical means or by location (10.7) Gas line protectionprotection of lines at penetrations When a gas line passes directly through a wall, floor, ceiling, or partition, it shall be protected by grommets that fit snugly to the gas line and the hole through which the gas line passes. Grommets shall be securely held in position and prevent abrasion or damage to the gas line from vibration. Grommets shall be made of rubber, plastic, leather, or a similar material, but not of metal (10.20) Protection of Gas gas supply inlet The gas supply inlet shall be capped or plugged with a threaded cap or plug on completion of manufacture of the manufactured home to exclude entry of foreign matter Shut-off valves Individual shut-off valves in the gas lines to the appliances shall be installed. Such valves shall be installed upstream of the union and above floor level Defective material Defective gas piping or fittings shall not be repaired. All defective material shall be replaced Burrs and defects Gas piping and fittings shall be free from cutting burrs and defects and shall also be reamed Installation of piping In the installation of piping, a structural member of a manufactured home shall not be cut in a manner that reduces the strength of the member below the strength required for the purpose for which it was intended Expansion and contraction Provision shall be made in the piping to accommodate expansion and contraction of the piping and to minimize the stresses due to jarring, vibration, or settling of an appliance. Z Draft Version 2, 6 January 2014 for TC Members Use Only 14

15 10.22 Dirt and dust Dirt or dust pockets shall not be necessary where the fuel supply piping enters beneath the appliance (10.15) Pressure and Leak leak testing Systems Gas systems shall be pressure leak tested in accordance with Clause 10Clause 11. Testing may be conducted at the manufacturer s premises on completion of assembly. 11 Pressure and Leakleak testing of piping and tubingfor gas systems 11.1 Factory testing Gas systems shall be pressure- and leak-tested prior to shipping 11.1 Pressure test Before appliances are connected, piping and tubing shall be subjected for at least 10 min to a gauge pressure of at least 69 kpa or 1-1/2 times the working pressure, whichever is greater, without showing a drop in pressure. The source of pressure shall be isolated during the test Leakage test After appliances are connected to the piping system, the entire system shall be pressurized to 3.0 kpa ± 0.5 kpa (gauge). Each appliance connection shall then be tested for leakage with soapy water or bubble solution and shall not show signs of leakage Test gases For the tests specified in Clauses 11.1 and 11.2, the system shall be filled with natural gas, propane vapour, air, or an inert gas. Oxygen shall not be used Locating of leaks The following requirements shall apply to the locating of leaks: (a) an approved liquid leak detector solution or device shall be used; (b) matches, candles, flame, or other sources of ignition shall not be used; (c) artificial illumination shall be restricted to battery-powered hand flashlights of the safety type or certified explosion-proof equipment; and (d) electric switches in or adjacent to the area of leakage shall not be operated unless they are designed for hazardous locations (11.5) On-site testing When a gas piping sub-assembly disconnected for shipment in accordance with Clause 10.3Clause is reattached on site, the piping system shall be (a) pressure tested according to CAN/CSA-B149.1 except that (i) the pressure need not exceed pressurized to the normal working pressure, and (ii) duration need not exceedfor at least 10 min without showing a drop in pressure,. The source of pressure shall be isolated during the test, and (b) leak tested according to CAN/CSA-B Formatted: Indent: Left: 0 cm, First line: 0 cm, Tab stops: Not at 1.5 cm Formatted: Indent: Left: 0 cm, Tab stops: 0.75 cm, Left + Not at 1.5 cm Formatted: Indent: Hanging: 0.75 Formatted: Indent: Left: 0 cm, Tab stops: 0.75 cm, Left + Not at 1.5 cm Z Draft Version 2, 6 January 2014 for TC Members Use Only 15

16 12 Markings 12.1 GeneralMarking classifications The following classifications apply to the warning label markings specified in Clauses 12.2 to 12.5: (a) Class I (integral marking): a marking that is embossed, cast, stamped, or otherwise formed in the part. (b) Class II (permanent plate): a plate that is made of metal at least 0.3 mm thick and securely attached by mechanical means. (c) Class III (permanent label): a label that is made of a material not adversely affected by water and attached using a non-water-soluble adhesive. Class III labels should not be located on surfaces whose temperatures exceed 80 C. Note: A list of acceptable materials can be found in the CSA International directory for Accepted Adhesive-Type Labels, Label Stock Materials and Printing Systems in the CSA Certified Product Listings at Ventilation warning labels Ventilation warning label for gas The warning label required by Clauses 7.2 and 7.3Clause 6.1 shall be a Class II or Class III marking with dimensions of at least 40 mm 75 mm. The label shall read as follows (modified as necessary to identify the applicable appliance or appliances): TO ENSURE A SUPPLY OF FRESH AIR TO OCCUPANTS, OPEN OR TURN ON VENTILATORS WHEN FUEL-BURNING RANGE, CLOTHES DRYER, AND/OR FUEL-BURNING LIGHTS ARE IN OPERATION Note: Users should be aware that jurisdictions in Canada may require equivalent text in French. The equivalent French wording is AFIN D ASSURER UNE ALIMENTATION D AIR FRAIS AUX OCCUPANTS, OUVRIR OU METTRE EN MARCHE LES VENTILATEURS LORSQUE LA CUISINIÈRE ET LES SÉCHEUSES FONCTIONNENT ET LORSQUE LES LAMPES À COMBUSTIBLE SONT ALLUMÉES (Z /5.2) Ventilation warning label for oil TheA permanent warning label required by Clauses 6.2 and 6.3 shall be a Class II or Class III marking with dimensions of at least 45 mm 75 mm shall be placed next to the vent and shall read as follows (modified as necessary to identify the applicable appliance or appliances): TO ENSURE A SUPPLY OF FRESH AIR TO OCCUPANTS, OPEN VENTILATORS WHEN FUEL-BURNING RANGE AND/OR FUEL-BURNING LIGHTS ARE IN OPERATION Note: Users should be aware that jurisdictions in Canada may require equivalent text in French. The equivalent French wording is POUR ASSURER UNE ALIMENTATION EN AIR FRAIS AUX OCCUPANTS, METTRE LES VENTILATEURS EN MARCHE LORSQUE LA CUISINIÈRE FONCTIONNE ET (OU) QUE LES LAMPES À COMBUSTIBLE SONT ALLUMÉES Warning label for gas supply systems A warning for gas supply systems shall be inscribed on a Class III marking with dimensions of at least 110 mm 145 mm. The label shall be located in a readily visible location and printed as shown in Figure 1. Note: Users should be aware that jurisdictions in Canada may require equivalent text in French Warning label for roof jack extension The manufactured home shall have a Class III label advising occupants that the roof jack extension needs to be installed before the occupants attempt to operate the appliance. Note: Users should be aware that jurisdictions in Canada may require equivalent text in French. Z Draft Version 2, 6 January 2014 for TC Members Use Only 16

17 12.5 Warning label for indoor access panel The warning label required by Clause The manufactured home shall have be a Class III label that reads as follows: WARNING: TO AVOID POSSIBLE HAZARD OF ASPHYXIATION, THE GAS-FIRED WATER HEATER IN THIS ENCLOSURE SHALL NOT BE OPERATED WITHOUT THIS ACCESS PANEL IN PLACE AND SECURELY ATTACHED Note: Users should be aware that jurisdictions in Canada may require text in French. The equivalent French wording is AVERTISSEMENT : AFIN D ÉVITER TOUT RISQUE D ASPHYXIE, LE CHAUFFE-EAU À GAZ DANS CE BÂTI NE DOIT PAS ÊTRE MIS EN MARCHE SANS AVOIR MIS EN PLACE ET FIXÉ SOLIDEMENT LE PANNEAU D ACCÈS. Table 1 Pipe and pipe fitting threads (See Clause ) Formatted: Normal, Space Before: 0 pt, Line spacing: single, Don't keep with next, Tab stops: Not at 2.54 cm Nominal pipe size (NPS) Length of threaded portion, mm Approximate number of threads to be cut 3/ / / / Z Draft Version 2, 6 January 2014 for TC Members Use Only 17

18 Table 2 Maximum capacity of natural gas in thousands of Btuh for Schedule 40 pipe and plastic pipe, including fittings, for pressures of less than 7 in w.c. based on a pressure drop of 0.5 in w.c. Z Draft Version 2, 6 January 2014 for TC Members Use Only 18

19 (See Clause ) (a) Imperial Length of pipe, ft Pipe size (NPS) 1/2 3/ /4 1-1/ / Z Draft Version 2, 6 January 2014 for TC Members Use Only 19

20 (Continued) Z Draft Version 2, 6 January 2014 for TC Members Use Only 20

21 Table 2 (Concluded) Maximum capacity of natural gas in kw for Schedule 40 pipe and plastic pipe, including fittings, for pressures of less than 1.75 kpa based on a pressure drop of 125 Pa (b) Metric Length of pipe, m Pipe size (NPS) 1/2 3/ /4 1-1/ / Z Draft Version 2, 6 January 2014 for TC Members Use Only 21

22 Note: This Table is taken from Table A.1 of CAN/CSA-B Table 3 Maximum capacity of natural gas in thousands of Btuh for copper tubing, including fittings, for pressures of less than 7 in w.c. based on a pressure drop of 0.5 in w.c. (See Clause ) (a) Imperial Length of tube, ft Outside diameter (in) 3/8 1/2 5/8 3/4 7/8 1-1/8 1-3/ Z Draft Version 2, 6 January 2014 for TC Members Use Only 22

23 (Continued) Z Draft Version 2, 6 January 2014 for TC Members Use Only 23

24 Table 3 (Concluded) Maximum capacity of natural gas in kw for copper tubing, including fittings, for pressures of less than 1.75 kpa based on a pressure drop of 125 Pa (b) Metric Length of tube, m Outside diameter (mm) Z Draft Version 2, 6 January 2014 for TC Members Use Only 24

25 Note: This Table is taken from Table A.8 of CAN/CSA-B Z Draft Version 2, 6 January 2014 for TC Members Use Only 25

26 WARNING PIPING THIS SYSTEM IS DESIGNED FOR USE WITH EITHER PROPANE OR NATURAL GAS. VENTILATION AROUND PROPANE CYLINDERS REQUIRES PERIODIC REMOVAL OF DEBRIS. BEFORE TURNING ON GAS (A) BE CERTAIN APPLIANCES ARE SUITABLE FOR GAS TO BE USED. REFER TO NAMEPLATE ON EACH GAS APPLIANCE FOR CORRECT DATA. (B) MAKE CERTAIN ALL GAS CONNECTIONS HAVE BEEN MADE TIGHT, ALL APPLIANCE VALVES ARE TURNED OFF, AND ANY UNCONNECTED OUTLETS ARE CAPPED. AFTER TURNING ON GAS (A) ALL CONNECTIONS, INCLUDING THOSE AT THE APPLIANCES AND CYLINDERS, SHOULD BE LEAK TESTED PERIODICALLY WITH SOAPY WATER BY THE OCCUPANT. NEVER USE A LIGHTED MATCH OR OTHER FLAME WHEN CHECKING FOR LEAKS. (B) DO NOT LEAVE SYSTEM TURNED ON OR CONTAINERS CONNECTED UNTIL SYSTEM HAS BEEN PROVEN TO BE GASTIGHT. (C) LIGHT ALL PILOTS. WHEN GAS SUPPLY IS DISCONNECTED SECURELY CAP GAS INLET INTO MANUFACTURED HOME. AVERTISSEMENT CANALISATION CETTE INSTALLATION EST CONÇUE POUR ÊTRE ALIMENTÉE AU PROPANE OU AU GAZ NATUREL. LA VENTILATION AUTOUR DES BOUTEILLES DE PROPANE NÉCESSITE L ENLÈVEMENT PÉRIODIQUE DES DÉCHETS. AVANT D OUVRIR LE GAZ (A) S ASSURER QUE LES APPAREILS CONVIENNENT AU GAZ QUI DOIT ÊTRE UTILISÉ. CONSULTER LA PLAQUE SIGNALÉTIQUE DE CHAQUE APPAREIL POUR LES RENSEIGNEMENTS APPROPRIÉS. (B) VÉRIFIER L ÉTANCHÉITÉ DE TOUS LES RACCORDS DE GAZ, LA FERMETURE DE TOUS LES ROBINETS D APPAREILS ET L OBTURATION DE TOUTES LES SORTIES NON RACCORDÉES. APRÈS AVOIR OUVERT LE GAZ (A) L OCCUPANT DOIT VÉRIFIER PÉRIODIQUEMENT L ÉTANCHÉITÉ DE TOUS LES RACCORDS, Y COMPRIS CEUX DES APPAREILS ET DES BOUTEILLES, EN Y APPLIQUANT DE L EAU SAVONNEUSE. NE JAMAIS SE SERVIR D UNE ALLUMETTE OU D UNE FLAMME QUELCONQUE POUR LA DÉTECTION DES FUITES. (B) NE PAS LAISSER L ALIMENTATION OUVERTE NI LES RÉCIPIENTS RACCORDÉS, AVANT DE S ÊTRE ASSURÉ DE L ÉTANCHÉITÉ DE L INSTALLATION. (C) ALLUMER TOUTES LES VEILLEUSES. LORSQUE L ALIMENTATION DE GAZ EST DÉCONNECTÉE S ASSURER QUE L ORIFICE D ALIMENTATION DE LA MAISON MANUFACTURÉE EST FERMÉE AU MOYEN D UN BOUCHON ÉTANCHE. Z Draft Version 2, 6 January 2014 for TC Members Use Only 26

27 Figure 1 Sample warning label for gas supply system (See Clause 12.3Clause 12.3.) Z Draft Version 2, 6 January 2014 for TC Members Use Only 27