1、CANADIAN GAS ASSOCIATION CGA 5,2 GAS-FIRED WATERLESS TOILET (FORMERLY CSA B205,2 ACCEPTED BY INTERPROVINCIAL GAS ADVISORY COUNCIL PUBLISHED DECEMBER 1971 EFFECTIVE DECEMBER 1972 SPONSORED BY CAMADIAN GAS ASSOCIATION 55 SCARSDALE ROAD DON MILLS, ONTARIO M3B 2R3 PRINTED IN CANADA REPRINTED SEPTEMBER,
2、1973 PREFACE This Standard, like all standards prepared by the Canadian Gas Association, is subjectto periodic review. Amendments in the form of replacement pages may be issued from time to time. To receive copies of these replacement pages, purchasers of this Standard should complete and return the
3、 attached card. Standards are updated in conjunction with changes in technology and are normally reviewed at least within a five year period. If the Standards Committee, industry and provincial inspection authorities feel the standard requires no change, then the standard may be reaffirmed and only
4、the date is changed. It should be noted that most CGA standards are published as National Standards of Canada. As the standards conform to the criteria and procedures established by the Standards Council of Canada, the Standard Number designation changes with the CGA prefix being replaced by CAN1 or
5、 CAN/CGA. Although any replacement pages that have been issued will be sold with the Standard, the purchaser must insert them where they apply. Replacement pages will show the date of the publication of the amendment. The effective date of the changes will be shown on the cover page of the amendment
6、 and is usually one year after publication. It is the responsibility of the purchaser to maintain his copy of the Standard and to retain those pages which have been replaced for reference purposes. Name Organization Address City Prov/State Country Postal/Zip Code Place Stamp Here CANADIAN GAS ASSOCI
7、ATION Standards Department 55 Scarsdale Road DON MILLS, Ontario M3B 2R3 CONTENTS List of IGAC Members iii List of CGA Committee Members . V Preface . vi PART I Gas-Fired Waterless Toilets for use with Propane Gas Construction Requirements 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14
8、1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 Scope . Assembly and Construction . Materials . Burners . Primary Air Control . Orifices and Orifice Fittings . Automatic Ignition Devices Pilot Burners and Safety Shut-Off Devices . Air Flow Control Automatic Valves Manual Valves . Gas Supply L
9、ines Legs Combustion Chambers . Charging Doors Linings . Insulation Flue Gas Temperature Limiting Means . Timing Devices Strength Deodorizers . Spark Plug Electrical Instructions Marking . 1 1. 2 3. 3 3Y4 4 4 495 5 6 697 7 7 7 8 8 8 9 9 9 9 9 10 10 r; 2 PART I1 Gas-Fired Waterless Toilets for use wi
10、th Other Than LP Gases 2.1 General Notes . 11 2.2 Test Gases 11 PART III Gas-Fired Waterless Toilets for use with Propane Gas Performance Requirements 3.1 General . 12 3.3 Burner Ratings 13 3.2 Test Gases 12. 13 3.4 Test Pressures and Burner Adjustments . 13 i 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13
11、 3 . 14 3.15 3.16 Combustion 13. I!+ Burner Operating Characteristics 14. 15. 16 Pilot Operating Characteristics . 16. 17 Pilot Burners and Safety Shut-Off Devices . 17. 18. 19 Incinerating Effectiveness 20. 21 Smoke. Odor and Fly Ash Elimination Characterisitcs . 21. 22. 23 Wall. Floor and Flue Gas
12、 Temperature 23. 24 Timing Devices 24. 25 Purging Effectiveness . 25 Materials . 26 Strength 27 Wind Test for Sealed Comustion Toilets 29 Appendix A 31 ii January 1976 4 INTERPROVINCIAL GAS ADVISORY COUNCIL MEMBERS ALTERNATES H. A. LINES (Chairman) Chief Gas Inspector Department of Labour Occupation
13、al Health C, Safety Division Gas Safety Unit 1150 Rose Street REGINA, Saskatchewan S4R 126 L. ADRIAN Chief, Safety Division Department of Public Services Government of the Northwest Territories P. 0. Box 1200 YELLOWKNIFE, Northwest Territories XOE 1HO L. H. GILBERT Energy Safety Branch Technical Sta
14、ndards Division Ministry of Consumer C, Commercial Relations 400 University Avenue TORONTO, Ontario M5G 1S5 E. S. HORNBY Assistant Dominion Fire Commissioner Office of the Dominion Fire Commissioner Department of Public Works Sir Charles Tupper Building Riverside Drive OTTAWA, Ontario K1A OM2 R. J.
15、JACKSON Government of the Yukon Territory Department of Local Government P. 0. Box 2703 WHITEHORSE, Yukon Territory Y1A 2C6 H. K. JENNS Fire Marshal Office of the Provincial Fire Marshal 1620 West 8th Avenue Suite 275 VANCOUVER, British Columbia V6J 1V4 T. G. NAIRN K. H. COLLIER R. 3. C. LYONS Techn
16、ical Services Branch New Brunswick Department of Labour P. 0. Box 6000 Corner of Campbell C, Regent Streets FREDERICTON, New Brunswick E3B 5H1 iii MEMBERS ALTERNATES J. T. MERCER Chief Gas Inspector Gas Protection Branch Department of Manpower and Labour I.B.M. Building, 8th Floor 10808 - 99th Avenu
17、e EDMONTON, Alberta T5K OG5 W. R. MONTGOMERY Chief Gas Inspector Department of Public Works Safety Engineering Services Division 501 West 12th Avenue VANCOUVER, British Columbia V5Z 1M6 , L. A. OMORROW Director Mechanical 6 Engineering Division . Manitoba Department of Labour Norquay Building, Room
18、611 401 York Avenue WINNIPEG, Manitoba R3C OV8 V. H. PERRY LP - Gas Inspector Office of the Fire Marshal Nova Scotia Department of Labour P. 0. Box 697 IIALIFAX, Nova Scotia B3J 2T8 R. PRONOVOST Electricity and Gas Board Quebec Department of Natural Resources 2100 Drummond Street MONTREAL, Quebec H3
19、G .LX1 F. J. RYAN Fire Commissioner Government of Newfoundland 6 Labrador Pleasantville Fire Station ST. JOHNS, Newfoundland R. L. TAYLOR (Secretary) Canadian Gas Association 55 Scarsdale Road DON MILLS, OqtFrio V3B 2R3 F. R. FRASER M. RIENDEAU iv CGA STANDARDS COMMITTEE ON GAS-FIRED TOILETS, CGA 5.
20、2 MEMBERS ALTERNATES D. P. Frankel (Chairman) Clear Water, Inc. P. 0. Box 644 SHEBOYGAN , Wisconsin 53081 R. C. Helke Director of Research La Mere Industries Snc. 227 North Main Street WALWORTH, Wisconsin 53184 A. Gauthier Gauth Sales . If any indication is observed during the tests prescribed herei
21、n that the appliance will not continue to meet the requirements in normal usage, such supplementary life tests shall be made as will determine reasonably satisfactory service. 1.2.3 All parts such as main burner(s), pilot burner(s), orifice(s), and other parts which are subject to repair, cleaning o
22、r adjustment, shall be readily accessible and removable. -2- 1.2.4 All controls shall be accessible for normal servicing and functional adjustment in position. Manifold assemblies which peat removal of control(s) intact shall be considered to meet this requirement for servicing. door to secure acces
23、s to a control compartment shall be considered acceptable. Removal of a panel or 1.2.5 The construction and assembly of all parts, whether specifical.1.y mentioned in these repuirements or not, shall be in accordance with reasonable concepts of safety, substantiality and durability. 1.2.6 Toilets sh
24、all be accompanied by instructions and diagrams adequate for their proper installation and safe operation, including all controls and accessories. servicing from other than the top or front of the toilet, these instructions shall also include infortnation relative to minimum clearances necessary far
25、 such access. These instructions shall also include complete information on operation of the timer and shall include recommended minimum settings for various types of charges to be burned. These instructions shall be reviewed by the testing agency for accuracy and for compatibility with results of t
26、est from a technical standpoint only. When access is required for 1.2.7 A sealed combustion system waterless toilet shall be provided with a venting system as part of the unit, Venting systems shall be provided with means for secure attachment to the appliance or wall structure. 1.2.7.1 The construc
27、tion of a sealed combustionrsystem waterless toilet, shall be such that when installed in accordance with the manuf- acturers instructions, the combustion air supply will be in the same pressure zone as the vent outlet. 1.2.7.2 The design and specification of a sealed combustion system shall be such
28、 that the air intake and vent pipes are supplied as parts of the appliance. -3- 1.3 MATERIALS 1.3.1 Toilets having parts and fittings used as a gas conduit shall be of substantial construction, adequate to meet the test requirement specified in Clause 3.14.1. 1.3.2 Ceramic baffling, where used, shal
29、l be of substantial contruction adequate to meet the test requirement specified in Clause 3.14.2. 1.4 BURNERS 1.4.1 Burner(s) shall be constructed and installed so as to protect against fouling or clogging of ports and primary air openings while in service. 1.4.2 Burner(s) shall be secured so that t
30、hey will not twist, slide or drop out of position. 1.4.3 Main burner(s) shall be easily removable and replaceable from the front, side or top of the toilet without disconnecting threaded joints in the gas supply line, other than those of the union type, and without disturbing or removing the charge.
31、 This shall be accomplished without the use of special tools or requiring tool manipulation within the burner compartment. 1.4.4 1.4.5 1.4.6 1.4.7 1.5 1.5.1 1.5.2 Bodies of burners (including mixer head, mixer tube, and burner head) shall be of substantial and durable construction. They shall be con
32、structed of metal having a melting point above 1450 F. Ribbon burners shall be constructed so that .the ribbon assembly can be easily removed, cleaned and replaced in the field without the use of special tools. Ports shall be machined or otherwise accurately made. Joints between mixer throats and fl
33、ame zones shall not depend primarily on seaming or cement for tightness but shall be securely screwed, bolted, welded, brazed, or of an equally r i g id and ga s -tight cons t ruc t ion. PRIMARY AIR CONTROL When primary air control means are provided, they shall be designed so that the flow of prima
34、ry air can be controlled to provide proper flame characteristics with all gases. Air shutters, when used, shall make a close fit with mixer faces and shall be provided with not more than two air open- ings, each of which approximates a circular opening near point of closure. When shutters are fully
35、closed, there shall be no uncovered openings. -4- 1.5,3 Primary air adjustment means shall be attached so that they will not change position by the action of gravity when the means for locking the adjustment is loosened. 1,5.4 Air shutters, when used, shall be constructed of a rust-resisting materia
36、l or have a rust-resisting finish, except when the type of material or construction employed will prevent sticking or corroding in position. complying with this requirement. Cast-iron shutters are considered as 1.5,5 Sheet-metal air shutters shall be of a thickness not less than 0.0304 inch. If the
37、thickness is less than 0.0508 inch, they shall have the outer edge turned at right angles, or be otherwise reinforced. 1.6 1.6.1 1.6.2 1.6.3 1.6.4 1.7 1.7.1 1.7.2 1.8 1.8.1 ORIFICES AND ORIFICE FITTINGS Fixed orifices shall be provided for main burners. Each orifice fitting shall be accessible for r
38、eplacement of the orifice spud. Orifice fittings shall b ridgidly secured to prevent misalignment with the burner mixer. Main burner orifice spuds and orifice spud holders shall be constructed of metal melting at not less than 1450 F. AUTOMATIC IGNITION DEVICES A gas-fired toilet shall be equipped w
39、ith a means for ignition of the main burner gas. Main burner igniters, and/or pilot igniters. (a) Electrodes, spark plugs, glow-coils, or other ignition means shall be placed so that they may be readily removed for servicing or replacement. This requirement shall be deemed met if the main burner ass
40、embly to which these components are attached can be readily removed intact. (b) Electrodes , spark plugs , glow-coils , or other ignition means shall be of such design and materials, and installed so that the relative position of the ignition device and the main burner shall be maintained onstant. P
41、ILOT BURNERS AND SAFETY SHUT-OFF DEVICES Except as noted in Clause 1.8.1.1, toilets shall be equipped with a complete safety shut-off device that will shut off the gas supply in the event of flame failure. It shall be either a certified type, or certified as a component of the toilet. - 5- 1.8.1.1 T
42、oilets shall either be equipped with a complete safety shut-off device or shall be provided with means to maintain a constant purging action. 1.8.2 1.8.3 1.8.4 1.8.5 1.8.6 1.8.7 Where a pilot burner is used, means shall be provided to prevent the flow of gas to the main burner while the pilot burner
43、 is being 1ight.ed. Where used, pilot burners shall be placed so as to permit safe lighting without burning the hand. Pilot burners shall be supported in such a manner that their position relative to the main burner is fixed. Pilot burner assemblies shall be constructed so that it is impossible to d
44、irect the pilot flame in other than the correct direct ion. Tips of pilot burners used in conjunction with safety shut-off devices shall be made from AISI 416 steel or material having at least equivalent heat and corrosion-resistant characteristics. Nickel alloys of greater than 1.0 percent nickel,
45、because of catalytic cracking effect, are not acceptable. Pilot burners shall have a fixed orifice or other means for limit- ing the flow of gas to the pilot, independent of the shut-off valve. The maximum rate obtainable by such means shall not exceed 2000 BTUH per pilot at normal test pressure. 1.
46、9 Air Flow Control 1.9.1 The unit shall be interlocked so that the firing equipment will operate only if the air fan is functioning. interlock and an air flow proving switch(s) shall be used. An Electrical 1.9.1.1 At least the following shall be provided and electrically connected in series in the s
47、afety control circuit and shall meet the requirement:s in 3.13.1. 1.9.1.2 An air flow proving device, that will not prove unless the require- ments in 3,13.1 are met. 1.10 AUTOMATIC VALVES 1.10.1 Automatic valves shall comply with the applicable construction requirements specified in the current Sta
48、ndard for Automatic Valves CGA 6.5. 1.10.2 Electrically operated automatic valves shall be of a type that will close upon current failure. 1.10.3 When an automatic valve is used with a gas supply line of semi-rigid tubing, the automatic valve shall be adequately supported. -6- 1.11 1.11.1 1.11.2 1.1
49、1.3 1.11.4 1.11.5 1.11.6 1.12 1.12.1 1.12.2 1.12.3 1.12.4 1.12.5 1.12.6 MANUAL VALVES Manual valves shall comply with the construction requirements specified in the current Standard for Manually Operated Gas Valves, B209.1, or be otherwise suitable for the manufacturers operating pressure. A separate manual valve shall be supplied to control the gas to each separate main burner where separate burners are provided. When the valve is exposed to view, lever or tee handles shall be at right angles to the line of flow when in the “off“ position, and parallel when in the “on“ position. wher
