1、NATIONAL STANDARD OF CANADA CAN1 - 6.4 -M79 (Reaffirmed 2001) AUTOMATIC GAS IGNITION SYSTEMS AND COMPONENTS Effective Date - June 1980 This Standard is a revised edition of the former: CGA 6.4-1976 Approved by Standards Council of Canada Published June 1979 CopyrightOCanadian Gas Association - 1979
2、THE STANDARDS COUNCIL OF CANADA The Standards Council of Canada is the co-ordinating body of the National Standards System, a federation of i nd e pe nd e n t , a ut on o mo u s or g a n i za t i on s wo r k i n g to- wards the further development and improvement of voluntary standardization in the
3、national interest. The principal objects of the Council are to foster and promote voluntary standardization as a means of advancing the national economy, benefitting the health, safety and welfare of the public, assisting and protecting the consumer, facilitating domestic and international trade, an
4、d furthering international co-operation in the fie Id of stand a rds . A National Standard of Canada is a standard which has been approved by the Standards Council of Canada and one which reflects a reasonable agreement among the views of a number of capable individuals whose collective interests pr
5、ovide to the greatest practicable extent a balance of representation of producers, users, consumers and others with relevant interests, as may be appropriate to the subject in hand. It normally is a standard which is capable of making a significant and timely contribution to the national interest. A
6、pproval by the Standards Council of Canada indicates that a standard conforms to the criteria and procedures established by the Council. Approval does not indicate that a review of the technical content of the standard has been made by the Council; this remains the continu- ing responsibility of the
7、 accredited standards-writing organization. Those who have a need to apply standards are en- couraged to use National Standards of Canada when- ever practicable. These standards are subject to periodic review; therefore, users are cautioned to obtain the latest edition from the organization preparin
8、g the standard. National Standards of Canada are approved by the Standards Council of Canada 350 Sparks Street OTTAWA, Ontario K1R 7S8 CANADIAN GAS ASSOCIATION The Canadian Gas Association, which represents all segments of the natural gas industry, has been accredited by the Standards Council of Can
9、ada to prepare National Standards of Canada in the area of equipment for use with natural gas and propane. CGA founded in 1907 represents distributors, trans- mission co m pan i e s , p rod u c e rs , p i pe I i ne con t rac t o rs , manufacturers and allied service organizations. CGA set up a stand
10、ards writing, inspection and certification program in the mid 1950s at a time when natural gas service was being extended to Eastern Canada and the West Coast. The Standards program now embraces 85 standards for gas appliances and accessories. Committees that write the standards include repre- senta
11、tion from all interests and are so constituted that no one interest may dominate. The interests represented include consumers, manufacturers, utilities, govern- mental inspection authorities and certification agencies. Standards are prepared using the consensus principle with effort applied to recon
12、cile any negative ballots. Government inspection authorities having jurisdiction also ballot on the standards, sitting as the Interprovincial Gas Advisory Council (IGAC). The CGA Standards Advisory Committee (SAC) reviews committee structures and procedures to determine that the standard meets the c
13、riteria of the Standards Council of Canada. This standard has been accepted by the Standards Committee, IGAC and SAC. This standard is intended to be used within the scope of the standard by the manufacturing sector, by those applying the equipment or those responsible for its proper application: It
14、 is the responsibility of the user to determine in each case that the standard is suitable for . the specific application. The Standards Committee and IGAC normally stipulate an effective date for the standard, delayed sufficiently to permit suppliers to make adjustments. CGA operates a certificatio
15、n program for fuel fired products which is accepted by all Canadian inspection authorities. In addition, through the Canadian Gas Research Institute (CGRI), the gas industry is pursuing improvement of equipment and the development of new products and the data from these projects is available to stan
16、dards committees. Recommendations for new standards and revisions may come from any source, and these suggestions may be addressed to the Standards Secretary of the Canadian Gas Association. CANADIAN STANDARDS ASSOCIATION 178 REXDALE BLVD. ETOBICOKE ONT. M9W 1 R3 ATTN: STANDARD SALES LES NORMES NATI
17、ONALES DU CANADA SON1 DISPONIBLES EN VERSlONS FRANCAISE ET ANGLAISE DPINTED IN CANADA 1 TABLE OF CONTENTS Page Interprovincial Gas Advisory Council ii CGA Standards Committee List . iii PART I CONSTRUCTION 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Scope . 1 General . 1 Connections . 2 Bolts, Nuts and Screws 2
18、 Adjustments . 2 Means for Ignition, Proof of Igniter, and Proof of Ignition . 2 Instructions 2 Marking . 3 PART I1 PERFORMANCE 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 General . Test Gases . Test Pressures and Pilot Burner Adjustments . Timings . Continued Performance . Accuracy and Stability of Fl
19、ame Sensing Devices Responsive to Ambient Temperature . Marking Material Adhesion and Legibility Pilot Operating Characteristics . Effects of Voltage Variation Substantiality of Sensing Elements 8 8 9 PART I11 DEFINITIONS . 10 APPENDIX A.*,. 11 ii March 1979 INTERPROVINCIAL GAS ADVISORY COUNCIL H.A.
20、 LINES (Chairman) Chief Gas Inspector, Department. of Labour, Occupational Health G Safety Division, Gas Safety Unit, 1150 Rose Street, REGINA, Saskatchewan. S4R 126 L. ADRIAN Chief, Safety Division, Department of Public Services, Govt of the Northwest Territories, YELLOWKNIFE, Northwest Territories
21、. XlA 2L9 A.W. DIAMOND Director, Engineering and Technical Services Division, Department of Manpower and Industrial Relations, Govt of Newfoundland 6 Labrador, ST. JOHNS, Newfoundland. L.H. GILBERT Ontario Fuels Safety Branch, Technical Standards Division, Ministry of Consumer 6 Commercial Re1 400 U
22、niversity Avenue, TORONTO, Ontario. M7A 259 E.S. HORNBY Assistant Dominion Fire Commissioner, Office of Dominion Fire Commissioner, Department of Public Works, Sir Charles Tupper Building, Riverside Drive, OTTAWA, Ontario. K1A OM2 R.H. JACKSON Government of the Yukon Territory, Department of Local G
23、overnment, P.O. Box 2703, WHITEHORSE, Yukon Territory. Y1A 2C6 G. LANE Office of the Provincial Fire Marshal, 2780 East Broadway, VANCOUVER, 3ritish Columbia. V5M 1Y8 (Alternate: K.H. COLLIER) ti n J.J. LAVOIE Director, Technical Services, Regie De LElectricite et du Gaz, Quebec Department of Natura
24、l Resources, 2100 Drummond Street, MONTREAL, Quebec. H3G 1x1 (Alternate: J. SAMSON) R.E.C. LYONS Technical Services Branch, New Brunswick Department of Labour, P.O. Box 6000, FREDERICTON, New Brunswick. E3B 5Hl J.T. MERCER Chief Gas Inspector, Gas Protection Branch, Department of Manpower 6 Labour,
25、I.B.M. Building, 8th Floor, 10808 - 99th Avenue, EDMONTON, Alberta. T5K OG5 W. R. MONTGOMERY Chief Gas Inspector, Ministry of Labour, Safety Engineering Services Division, 501 West 12th Avenue, VANCOUVER, British Columbia. V5Z 1M6 L.A. OMORROW Director, Mechanical 6 Engineering Division, Manitoba De
26、partment of Labour, 500 Norquay Building, WINNIPEG, Manitoba. R3C OV8 V.H. PERRY LP - Gas Inspector, Office of the Fire Marshal, Nova Scotia Department of Labour, P.O. Box 697, HALIFAX, Nova Scotia. B3J 2T8 (Alternate: F.R. FRASER) W.J. HEELEY, Secretary, Canadian Gas Association, 55 Scarsdale Road,
27、 DON MILLS, Ontario. M33 2R3 iii March 1979 CGA 6.2-6.9 STANDARDS COMMITTEE ON ACCESSORIES FOR GAS-FIRED APPLIANCES A. G. REED (Chairman) Honeywell Limited, 740 Ellesmere Road, SCARBOROUGH, Ontario. M1P 2V9 K. BALES Canadian Gas Association, 55 Scarsdale Road, DON MILLS, Ontario. M3B 2R3 C. J . CAMP
28、BELL Canadian Western Natural Gas Company Limited, 140 - Sixth Avenue S.W. CALGARY, Alberta. T2P OP6 G. GROSS Harper-Wyman Company, 930 North York, HINSDALE, Illinois 60521 R.J. LAMBERT White Rodgers Company, 9797 Reavis Road, ST. LOUIS, Missouri 63123 (Alternate: E.F. SHORT) K.C. LEDUC Ascqlectric
29、Brantford, P.O. Box 160, BRANTFORD, Ontario. N3T 5M8 E.R. NEAR Union Gas Limited, 555 Riverview Drive, CHATHAM, Ontario. N7M 5M1 (AI terna te : J. JONES) R. SAUNDER Provincial Gas Company, 15 Church Street, ST. CATHARINES, Ontario. L2R 3B4 (Alternate: W, BISHOP) W.D. SMILLIE ITT Controls 6 Instrumen
30、ts, 55 Royal Road, GUELPH, Ontario. NIH IT1 R. TERVIT Tervcon Limited, 1707 Sismet Road, Unit 2, MISSISSAUGA, Ontario. L4W 1P9 T. TYNE Canadian Standards Association, 178 Rexdale Blvd., REXDALE, Ontario. M9W 1R3 D.F. WEEKES Robertshaw Controls (Canada) Limited, 41 Medulla Avenue, TORONTO, Ontario. M
31、SZ SW1 L.J. WOJCIK Temprite Industries Limited, 6470 Viscount Road, MISSISSAUGA, Ontario. L4C lH3 H. WRIGHT United Gas Limited, 23 Main Street East, HAMILTON, Ontario. L8N 1E7 T. MINER Ontario Fuels Safety Branch, Technical Standards Division, Ministry of Consumer 6 Commercial Relations, 400 Univers
32、ity Avenue, TORONTO, Ontario. M7A 259 NOTE - This standard contains SI (Metric) equivalents to the yard/ pound quantities, the purpose being to allow the standard to be used in SI (Metric) units. Some sectors of industry in the future may select different SI (Metric) values where this Standard shows
33、 only equivalents. Where a SI (Metric) equivalent is given with the yard/pound system, the yard/pound value shall take precedence. Acknowledgement is made for the French translation of this National Standard of Canada by the Translation Bureau of the Department of the Secretary of State and the tech
34、nical editing of the translation by the Material Data Management Branch of the Department of Supply E Services. 1.1 -1- 1.2.7 PART I CONSTRUCTION 1.1 SCOPE 1.1.1 produced automatic gas ignition systems (see Part 111, Definitions) and components thereof other than types utilizing low, extra low, or h
35、igh voltages, constructed entirely of new, unused parts and materials. An automatic gas ignition system shall perform the following functions: This standard applies to newly a. b. C. Ignite the gas at the main burner(s), Prove the presence of either the ignition means, the main burner flame, or both
36、; and Automatically act to shut off the gas supply to the main burner(s), or to the pilot burner(s) and the main burner(s), when the supervised flame or ignition means is not proved. Components submitted for examination under this standard shall perform one or more of the above functions. 1.1.2 This
37、 standard covers automatic gas igni- tion systems and components thereof intended primarily for use with gas appliances having inputs of 400 000 Btuh (117.23 kWj or less per individual combustion chamber. 1.1.3 This standard applies to automatic gas ignition systems and components thereof for use wi
38、th one or more of the following gases : a. Natural b. Propane 1.1.4 ignition system or component thereof with this standard does not imply that such a system or component of such a system is acceptable for use on gas appliances without supplemental tests with the devicels) applied to the particular
39、appliance design. Compliance of an automatic gas 1.1.5 ignition system shall be capable of operation throughout a temperature range of 32F (OOC to 12SF (52OC) unless either higher, lower, or both higher and lower temperatures are specified by the manufact- urer. At the option of.the manufacturer, th
40、e operating temperature range may be increased above 125F (52OC) in increments of 25F (14OC) and may be reducgd below 3ZF (OOC) to either -20F (-29 C) or -40F Each component of an automatic gas (-40OC). 1.1.6 The tests specified herein are to verify performance within the manufacturers specified max
41、imum and minimum timings where applicable : a. Flame-establishing period b. Flame failure response time , The above terms are defined in Part 111, Definitions. 1.1.7 For low, extra low, and high voltage automatic gas ignition systems and components thereof, the current standard CSA C22.2 #24 TEMPERA
42、TURE INDICATING AND REGULATING EQUIPMENT applies. 1.2 GENERAL 1.2.1 Construction of an automatic gas ignition system or component thereof, whether specifically covered by this standard or not, shall be in accordance with reasonable concepts of safety, sub- stantiality and durability. All specificati
43、ons as to construction set forth herein may be satisfied by the construction actually prescribed or such other construction as will provide at least equivalent performance. 1.2.2 Automatic valves utilized as a part of automatic gas ignition systems shall comply with the applicable provisions of the
44、current standard CAN1-6.5 AUTOMATIC VALVES FOR GAS APPLIANCES with the exception of the requirements for instructions, markings, integrity of operation and continued operation. 1.2.3 The mechanism of automatic gas ignition system components shall be protect- ed by substantial enclosures so as to pre
45、vent interference with the safe operation of the system. 1.2.4 Action of a device which proves the presence of either the ignition means, the main burner flame, or both shall not depend on the relative movement of exposed parts which could be held in fixed relation by corrosion or by accumulated dep
46、osits of foreign matter which might be expected to occur in its applications. Tests to deter- mine compliance with this provision shall be performed at the discretion of the test- ing agency. 1.2.5 Materials for automatic mechanisms and current-carrying components exposed to fuel gases shall be resi
47、stant to corrosive effects of such gases, including moisture and sulphur compounds, or shall be provided with protective coatings. 1.2.6 Construction shall be such that those parts generally recognized as removable for servicing cannot be assembled incorrectly in a manner that will result in unsafe
48、operation. 1.2.7 Systems utilizing both a constant- burning pilot and an intermittently operated pilot shall be constructed so that neither the pilots, gas tubing nor the orifices for the different pilots can be interchanged. 1.2.8 -2- 1.7 1.2.8 Under normal operating conditions, the ignition source
49、 shall be operative before or simultaneous with action of the device which initially permits flow of gas to the main burnerls). 1.2.9 A device which requires an external manual force to effect operation shall not exhibit impairment to proper operation in the event the user does not follow the manufacturers specified sequence of operation to effect passage of gas to the burner(s). The device shall not exhibit any impairment to its normal operation as the result of premature or delayed application of the manual force. I. 3 CONNECTIONS 1.3.1 When for connection to pipe, the in
