1、B41B4eB53B49 B5aB32B31B2eB34B30B2eB32B2dB31B39B39B36B43B47B41 B32B2eB39B32B2dB4dB39B36B41B4dB45B52B49B43B41B4e B4eB41B54B49B4fB4eB41B4c B53B54B41B4eB44B41B52B44B2fB43B41B4eB41B44B49B41B4e B47B41B53 B41B53B53B4fB43B49B41B54B49B4fB4e B53B54B41B4eB44B41B52B44B46B4fB52GAS-FIRED,WORK ACTIVATED AIR-CONDIT
2、IONINGAND HEAT PUMP APPLIANCES(INTERNAL COMBUSTION)B49B4eB54B45B52B4eB41B54B49B4fB4eB41B4c B41B50B50B52B4fB56B41B4c B53B45B52B56B49B43B45B53 B2d B55B2eB53B2eB2c B49B4eB43B2eB38B35B30B31 B45B61B73B74 B50B6cB65B61B73B61B6eB74 B56B61B6cB6cB65B79 B52B64B2e Bb7 B43B6cB65B76B65B6cB61B6eB64B2c B4fB68B69B6f
3、 B34B34B31B33B31B43B41B4eB41B44B49B41B4e B47B41B53 B41B53B53B4fB43B49B41B54B49B4fB4eB35B35 B53B63B61B72B73B64B61B6cB65 B52B64B2eB2c B54B6fB72B6fB6eB74B6fB2c B4fB6eB74B61B72B69B6fB2c B43B61B6eB61B64B61 B4dB33B42 B32B52B33AMERICAN NATIONAL STANDARD CANADIAN GAS ASSOCIATION STANDARDANSI Z21.40.2-1996 C
4、GA 2.92-M96First Edition - 1996This Standard is a revised editionof the formerStandards forGAS-FIRED, WORK ACTIVATEDAIR-CONDITIONING AND HEAT PUMPAPPLIANCES (INTERNAL COMBUSTION)ANSI Z21.40.2-95 CGA 2.92-APPROVEDIGACJuly 16, 1996 November 20, 1995American National Standards Institute, Inc. Interprov
5、incial Gas Advisory CouncilEffective in Canada February, 1998Prepared byINTERNATIONAL APPROVAL SERVICES - U.S., INC. and CANADIAN GAS ASSOCIATION8501 East Pleasant Valley Road 55 Scarsdale RoadCleveland, Ohio 44131 Toronto, Ontario, Canada M3B 2R3Published - May 1997Copyright 1996International Appro
6、val Services - U.S., Inc./Canadian Gas AssociationPermission is granted to republish material herein in laws or ordinances, and inregulations, administrative orders, or similar documents issued by publicauthorities. Those desiring permission for other republication should consultInternational Approv
7、al Services - U.S., Inc. or the Canadian Gas Association atthe addresses noted above.AMERICAN NATIONAL STANDARDS INSTITUTEThe American National Standards Institute(ANSI), Inc. is the nationally recognized coordinator ofvoluntary standards development in the United Statesthrough which voluntary organ
8、izations, representingvirtually every technical discipline and every facet oftrade and commerce, organized labor and consumerinterests, establish and improve the some 8500national consensus standards currently approved asAmerican National Standards.ANSI provides that the interests of the public mayh
9、ave appropriate participation and representation instandardization activity, and cooperates withdepartments and agencies of U.S. Federal, state andlocal governments in achieving compatibility betweengovernment codes and standards and the voluntarystandards of industry and commerce.ANSI represents th
10、e interests of the United Statesin international nontreaty organizations such as theInternational Organization for Standardization (ISO)and the International Electrotechnical Commission(IEC). The Institute maintains close ties with regionalorganizations such as the Pacific Area StandardsCongress (PA
11、SC) and the Pan American StandardsCommission (COPANT). As such, ANSI coordinatesthe activities involved in the U.S. participation inthese groups.ANSI approval of standards is intended to verifythat the principles of openness and due process havebeen followed in the approval procedure and that aconse
12、nsus of those directly and materially affected bythe standards has been achieved. ANSI coordination isintended to assist the voluntary system to ensure thatnational standards needs are identified and met witha set of standards that are without conflict orunnecessary duplication in their requirements
13、.Responsibility of approving American National Standards rests with theAmerican National Standards Institute, Inc.11 West 42nd StreetNew York, NY10036INTERNATIONAL APPROVAL SERVICESThe American Gas Association and Canadian GasAssociation have co-sponsored national standardsprograms in the U.S. and C
14、anada, and the creation orharmonization of Canadian and U.S. binational gasequipment standards. International Approval Services(IAS), formed in 1993, has provided the technical andadministrative support required by these activities, onbehalf of the co-sponsors.The Canadian Gas Association remains th
15、esponsor of the gas equipment and installationstandards programs in Canada. In the U.S.sponsorship, or the Secretariat, was transferred inMay 1996 from the American Gas Association toInternational Approval Services - U.S., Inc. AlthoughIAS-U.S. acts as secretariat of the Z21 Committee, theactions of
16、 the committee are independent of ANSI andIAS-U.S.IAS also operates a design certification programfor fuel-fired products covered by the standards,accredited by the American National StandardsInstitute and the Standards Council of Canada, andaccepted by all Canadian inspection authorities.Through th
17、e Gas Research Institute (GRI) and theCanadian Gas Research Institute (CGRI), the gasindustry helps pursue the improvement of gasequipment and the development of new products.Data from these projects is available to StandardsCommittees for review and consideration.As technical advances take place, n
18、ew standardsand revisions to existing standards may be necessary.When they are believed desirable, recommendations orsuggestions should be forwarded to the StandardsDepartments of IAS U.S. at 8501 East PleasantValley Road, Cleveland, Ohio 44131, or IAS Canadaat 55 Scarsdale Road, Don Mills, Ontario,
19、 CanadaM3B 2R3. A proposal form is provided in the back ofthis standard.CANADIAN GAS ASSOCIATIONThe Canadian Gas Association (CGA), has beenaccredited by the Standards Council of Canada toprepare National Standards of Canada in the area ofequipment for use with natural gas and propane.Founded in 190
20、7, its 320 corporate members span theindustry spectrum and include natural gastransmission companies, distributors, manufacturers ofother gas appliances and equipment, brokers,marketers and producers.Committees that write the standards includerepresentation from all interests and are soconstituted t
21、hat no one interest may dominate. Theinterests represented include consumers,manufacturers, utilities, governmental inspectionauthorities and certification organizations. Standardsare prepared using the consensus principle with effortapplied to reconcile differing opinions. Governmentinspection auth
22、orities having jurisdiction also ballot onthe standards as members of the Interprovincial GasAdvisory Council (IGAC).The CGA Standards Advisory Committee (SAC)reviews committee structures and procedures todetermine that the standards meets the criteria of theStandards Council of Canada.This Standard
23、 has been accepted by theStandards Committee, IGAC and SAC.This Standard is intended to be used within thescope of the standard by the manufacturing sector, bythose applying the equipment, or those responsible forits proper application. It is the responsibility of theuser to determine in each case t
24、hat the Standard issuitable for the specific application. The StandardsCommittee and IGAC normally stipulate an effectivedate for the Standard.PREFACEThis publication represents a basic standard for safe operation, substantial anddurable construction, and acceptable performance of work activated air
25、-conditioning and heat pumpappliances (internal combustion). It is the result of years of experience in the manufacture, testing,installation, maintenance, inspection and research on gas-fired, work activated air-condition and heatpump appliances (internal combustion) designed for utilization of gas
26、. There are risks of injury topersons inherent in appliances that, if completely eliminated, would defeat the utility of theappliance. The provisions in this standard are intended to help reduce such risks while retaining thenormal operation of the appliance.Nothing in this standard is to be conside
27、red in any way as indicating ameasure of quality beyond compliance with the provisions it contains. It is designed to allowcompliance of gas-fired work activated air-conditioning and heat pump appliances (internalcombustion), the safety, construction and performance of which may exceed the various p
28、rovisionsspecified herein. In its preparation, full recognition has been given to possibilities of improvementthrough ingenuity of design. As progress takes place, revisions may become necessary. When they arebelieved desirable, recommendations or suggestions should be forwarded to the Chairman ofAc
29、credited Standards Committee Z21, 8501 East Pleasant Valley Road, Cleveland, Ohio 44131, or theChairman of the Canadian Gas Association Standards Steering Committee on Gas Burning Appliancesand Related Accessories, 55 Scarsdale Road, Don Mills, Ontario, Canada, M3B 2R3.Safe and satisfactory operatio
30、n of a gas-fired work activated air-conditioningand heat pump appliances (internal combustion) depends to a great extent upon its properinstallation, use and maintenance. It should be installed, as applicable, in accordance with theNational Fuel Gas Code, ANSI Z223.1; the Natural Gas Installation Co
31、de, CAN/CGA-B149.1; thePropane Installation Code, CAN/CGA-B149.2; the (U.S.) Manufactured Home Construction and SafetyStandard, Title 24 CFR, Part 3280, or when such a standard is not applicable, the Standard forManufactured Home Installations Sites, Communities, ANSI/NFPA 501A; or the Mobile Homes
32、Standard,CAN/CSA-Z240 MH Series; manufacturers installation instructions and local municipal codes.Users of this American National Standard/Canadian Gas Association Standardare advised that the devices, products and activities within its scope may be subject to regulation atthe Federal, Territorial,
33、 Provincial, state or local level. Users are strongly urged to investigate thispossibility through appropriate channels. In the event of a conflict with this standard, the Federal,Territorial, Provincial, state or local regulation should be followed.NOTICE TO READER: The Canadian Gas Association (CG
34、A) has been accredited by the StandardsCouncil of Canada to prepare standards in the area of equipment for use with natural gas andpropane. Standards are prepared by committees that include representatives from all interests andare so constituted that no one interest may dominate. The interests repr
35、esented includegovernmental inspection authorities, certification agencies, manufacturers, utilities, and consumers.Government inspection authorities having jurisdiction review and approve these standards; sitting asthe Interprovincial Gas Advisory Council (IGAC).THIS STANDARD IS INTENDED TO BE USED
36、 BY THE MANUFACTURING SECTOR AND BY THOSEAPPLYING THE EQUIPMENT AND BY THOSE RESPONSIBLE FOR ITS PROPER INSTALLATION.IT IS THE RESPONSIBILITY OF THESE USERS TO DETERMINE THAT IN EACH CASE THISSTANDARD IS SUITABLE FOR AND APPLICABLE TO THE SPECIFIC USE THEY INTEND.CAUTION NOTICE: This American Nation
37、al Standard may be revised or withdrawn at any time. Theprocedures of the American National Standards Institute, Inc., require that action be taken toreaffirm, revise or withdraw this standard no later than five (5) years from the date of approval.Purchasers of American National Standards may receiv
38、e current information on all standards bycalling or writing the American National Standards Institute, Inc., 11 West 42nd Street, New York,N.Y. 10036, (212) 642-4900.EFFECTIVE DATE:MAn organization using this standard for product evaluation as a part of itscertification program will normally establi
39、sh the date by which all products certified by thatorganization should comply with this standard. In Canada the Standards Committee and theInterprovincial Gas Advisory Council normally stipulate an effective date for the standard.HISTORY OF THE DEVELOPMENT OF STANDARDGAS-FIRED, WORK ACTIVATED AIR-CO
40、NDITIONINGAND HEAT PUMP APPLIANCES (INTERNAL COMBUSTION)(This History is informative and is not part of the standard.)With the onset of the Free Trade Agreementbetween the United States and Canada onJanuary 2, 1988, significant attention was givento the harmonization of the United States andCanadian
41、 safety standards addressing gas-firedequipment for residential, commercial andindustrial applications. It was believed that theelimination of the differences between thestandards would remove potential tradebarriers and provide an atmosphere in whichNorth American manufacturers could marketmore fre
42、ely in the United States and Canada.The harmonization of these standards was alsoseen as a step toward harmonization withinternational standards.With the formation of joint subcommittees,a Canadian Gas Association Standards SteeringCommittee on Gas Burning Appliances andRelated Accessories was estab
43、lished to parallelAccredited Standards Committees Z21 and Z83,and to support the formation of jointsubcommittees. Operating procedures, inaccordance with American National StandardsInstitute procedures, for joint subcommitteeswere developed and subsequently approved byANSI on April 1, 1993.At its Ma
44、rch 1987 meeting, the airconditioning subcommittee was informed ofindustry interest in the development ofstandards coverage for new products whichwould heat, cool or generate electricity asseparate functions or in combination. Thesubcommittee endorsed the need for suchcoverage and recommended to the
45、 Z21Committee that the subcommittees scope beexpanded and clarified, to cover preparation ofstandards for energy conversion equipmentutilizing gas fuel to provide: 1) conditioned air,liquid or refrigerant to spaces or equipment; 2)on-site electrical power generation; 3)mechanical power; and 4) any c
46、ombination ofthe above. Equipment may include, but is notlimited to, heat pumps, fuel cells, gas engines,dehumidifiers and cogenerators.The subcommittee agreed the preparation ofstandards coverage under its scope couldinclude drafting new standards, as well asupgrading the existing air conditionings
47、tandard, Z21.40.1. The subcommitteeestablished the Fuel Gas Heat Pump WorkingGroup to review the current Z21.40.1 and draftnew standards coverage for productapplication outlined under the revised scope.A Z21/CGA Joint Subcommittee onStandards for Gas Air Conditioning Applianceswas established, based
48、 on memberships of theZ21 Subcommittee on Standards for Gas AirConditioning Appliances and the CGA 2.9Committee on Standards for Gas AirConditioning Appliances. Membershipencompasses representatives from the U.S. andCanadian manufacturing industry, gassuppliers, regulatory authorities and generalint
49、erest with the intent that each country isequally represented.Based on the efforts of the Fuel Gas HeatPump Working Group, a draft standard forgas-fired, work activated air-conditioning andheat pump appliances (Series A2) was adoptedfor distribution for review and comment by thesupervising technical joint subcommittee at itsFebruary 1993 meeting. The proposed standardwas distributed for review and comment inFebruary 1993. At its August 1993 meeting, thedraft standard was reviewed and furtherrevised in light of comments received. Thejoint subcommittee requested that the Fuel GasHeat Pump Wo
