ANSI CSA AM Z21.10.3-2015 CSA 4.3-2015 Gas-fired water heaters volume III storage water heaters with input ratings above 75 000 Btu per hour circulating and instantaneous (Seventh .pdf

1、ANSI Z21.10.3-2015 CSA 4.3-2015Gas-fired water heaters, volume III, storage waterheaters with input ratings above 75,000 Btu perhour, circulating and instantaneousLegal Notice for StandardsCanadian Standards Association and CSA America, Inc. (operating as “CSA Group”) develop standards through a con

2、sensus standardsdevelopment process approved by the Standards Council of Canada and the American National Standards Institute. This process bringstogether volunteers representing varied viewpoints and interests to achieve consensus and develop a standard. Although CSA Groupadministers the process an

3、d establishes rules to promote fairness in achieving consensus, it does not independently test, evaluate, or verify thecontent of standards.Disclaimer and exclusion of liabilityThis document is provided without any representations, warranties, or conditions of any kind, express or implied, including

4、, without limitation,implied warranties or conditions concerning this documents fitness for a particular purpose or use, its merchantability, or its non-infringementof any third partys intellectual property rights. CSA Group does not warrant the accuracy, completeness, or currency of any of the info

5、rmationpublished in this document. CSA Group makes no representations or warranties regarding this documents compliance with any applicablestatute, rule, or regulation.IN NO EVENT SHALL CSA GROUP, ITS VOLUNTEERS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES, DIRECTORS,OR OFFICE

6、RS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES, HOWSOEVER CAUSED,INCLUDING BUT NOT LIMITED TO SPECIAL OR CONSEQUENTIAL DAMAGES, LOST REVENUE, BUSINESS INTERRUPTION, LOST OR DAMAGEDDATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS,WHETHER BASED IN CONTRAC

7、T,TORT (INCLUDING NEGLIGENCE), OR ANY OTHERTHEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO OR POSSESSION OR USE OF THIS DOCUMENT, EVEN IF CSA GROUPHAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES.In publishing and making this document available, C

8、SA Group is not undertaking to render professional or other services for or on behalf of anyperson or entity or to perform any duty owed by any person or entity to another person or entity. The information in this document is directedto those who have the appropriate degree of experience to use and

9、apply its contents, and CSA Group accepts no responsibility whatsoeverarising in any way from any and all use of or reliance on the information contained in this document.CSA Group is a private not-for-profit company that publishes voluntary standards and related documents. CSA Group has no power, n

10、or does itundertake, to enforce compliance with the contents of the standards or other documents it publishes.Intellectual property rights and ownershipAs between CSA Group and the users of this document (whether it be in printed or electronic form), CSA Group is the owner, or the authorizedlicensee

11、, of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), and allinventions and trade secrets that may be contained in this document, whether or not such inventions and trade secrets are protected bypatents and applications for pate

12、nts. Without limitation, the unauthorized use, modification, copying, or disclosure of this document mayviolate laws that protect CSA Groups and/or others intellectual property and may give rise to a right in CSA Group and/or others to seek legalredress for such use, modification, copying, or disclo

13、sure. To the extent permitted by licence or by law, CSA Group reserves all intellectualproperty rights in this document.Patent rightsAttention is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. CSA Group shall not beheld responsible for identi

14、fying any or all such patent rights. Users of this standard are expressly advised that determination of the validity ofany such patent rights is entirely their own responsibility.Authorized use of this documentThis document is being provided by CSA Group for informational and non-commercial use only

15、. The user of this document is authorized to doonly the following:If this document is in electronic form: load this document onto a computer for the sole purpose of reviewing it; search and browse this document; and print this document if it is in PDF format.Limited copies of this document in print

16、or paper form may be distributed only to persons who are authorized by CSA Group to have suchcopies, and only if this Legal Notice appears on each such copy.In addition, users may not and may not permit others to alter this document in any way or remove this Legal Notice from the attached standard;

17、sell this document without authorization from CSA Group; or make an electronic copy of this document.If you do not agree with any of the terms and conditions contained in this Legal Notice, you may not load or use this document or make anycopies of the contents hereof, and if you do make such copies

18、, you are required to destroy them immediately. Use of this documentconstitutes your acceptance of the terms and conditions of this Legal Notice.Revision HistoryANSI Z21.10.3-2015 CSA 4.3-2015, Gas-fired water heaters, volume III,storage water heaters with input ratings above 75,000 Btu per hour,cir

19、culating and instantaneousRevisions from the Sixth Edition Revision symbol (inmargin)Clauses 1.13, 3, 4.1.25, 4.22, 4.30.2, 4.31.12, 4.31.32, 5.1.20,5.5, 5.28, 5.29.2, 5.32, 7.1, E.2, and E.3Figures 2-A and 2-BStandards Update ServiceANSI Z21.10.3-2015 CSA 4.3-2015November 2015Title: Gas-fired water

20、 heaters, volume III, storage water heaters with input ratings above75,000 Btu per hour, circulating and instantaneousTo register for e-mail notification about any updates to this publication go to shop.csa.ca click on CSA Update ServiceThe List ID that you will need to register for updates to this

21、publication is 2423824.If you require assistance, please e-mail techsupportcsagroup.org or call 416-747-2233.Visit CSA Groups policy on privacy at www.csagroup.org/legal to find out how we protect yourpersonal information.CSA Group American National StandardsInstituteThe Canadian Standards Associati

22、on (operating as CSAGroup), under whose auspices this National Standardhas been produced, was chartered in 1919 andaccredited by the Standards Council of Canada to theNational Standards system in 1973. It is a not-for-profit, nonstatutory, voluntary membershipassociation engaged in standards develop

23、ment andcertification activities.CSA Group standards reflect a national consensus ofproducers and users including manufacturers,consumers, retailers, unions and professionalorganizations, and governmental agencies. Thestandards are used widely by industry and commerceand often adopted by municipal,

24、provincial, andfederal governments in their regulations, particularlyin the fields of health, safety, building andconstruction, and the environment.Individuals, companies, and associations acrossCanada indicate their support for CSA Groupsstandards development by volunteering their time andskills to

25、 Committee work and supporting CSA Groupsobjectives through sustaining memberships. The morethan 7000 committee volunteers and the 2000sustaining memberships together form CSA Groupstotal membership from which its Directors are chosen.Sustaining memberships represent a major source ofincome for CSA

26、Groups standards developmentactivities.CSA Group offers certification and testing services insupport of and as an extension to its standardsdevelopment activities. To ensure the integrity of itscertification process, CSA Group regularly andcontinually audits and inspects products that bear theCSA Gr

27、oup Mark.In addition to its head office and laboratory complexin Toronto, CSA Group has regional branch offices inmajor centres across Canada and inspection andtesting agencies in eight countries. Since 1919, CSAGroup has developed the necessary expertise to meetits corporate mission: CSA Group is a

28、n independentservice organization whose mission is to provide anopen and effective forum for activities facilitating theexchange of goods and services through the use ofstandards, certification and related services to meetnational and international needs.The American National Standards Institute (AN

29、SI), Inc.is the nationally recognized coordinator of voluntarystandards development in the United States throughwhich voluntary organizations, representing virtuallyevery technical discipline and every facet of trade andcommerce, organized labor and consumer interests,establish and improve the some

30、10,000 nationalconsensus standards currently approved as AmericanNational Standards.ANSI provides that the interests of the public mayhave appropriate participation and representation instandardization activity, and cooperates withdepartments and agencies of U.S. Federal, state andlocal governments

31、in achieving compatibility betweengovernment codes and standards and the voluntarystandards of industry and commerce.ANSI represents the interests of the United States ininternational nontreaty organizations such as theInternational Organization for Standardization (ISO)and the International Electro

32、technical Commission(IEC). The Institute maintains close ties with regionalorganizations such as the Pacific Area StandardsCongress (PASC) and the Pan American StandardsCommission (COPANT). As such, ANSI coordinates theactivities involved in the U.S. participation in thesegroups.ANSI approval of sta

33、ndards is intended to verify thatthe principles of openness and due process have beenfollowed in the approval procedure and that aconsensus of those directly and materially affected bythe standards has been achieved. ANSI coordination isintended to assist the voluntary system to ensure thatnational

34、standards needs are identified and met with aset of standards that are without conflict orunnecessary duplication in their requirements.For further information on CSA Group services, writetoCSA Group178 Rexdale Boulevard,Toronto, Ontario,Canada M9W 1R3Responsibility of approving American standards r

35、estswith theAmerican National Standards Institute, Inc.25 West 43rd Street, Fourth floorNew York, NY 10036ISBN 978-1-4883-000-4 2015 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoeverwithout the prior permission of the publisher.Published in November 2

36、015 by CSA GroupA not-for-profit private sector organization178 Rexdale Boulevard,Toronto, Ontario, Canada M9W 1R3To purchase standards and related publications, visit our Online Store at shop.csa.caor call toll-free 1-800-463-6727 or 416-747-4044.TMA trade-mark of the Canadian Standards Association

37、 and CSA America Inc., operating as “CSA Group”American National Standards Institute, Inc.Interprovincial Gas Advisory CouncilApproved on October 5, 2015 by ANSIApproved on August 7, 2015 by IGACEffective in Canada April 1, 2017Gas-fired water heaters, volume III,storage water heaters with inputrati

38、ngs above 75,000 Btu per hour,circulating and instantaneousANSI Z21.10.3-2015 CSA 4.3-2015ANSI Z21.10.3-2015 CSA 4.3-2015Gas-fired water heaters, volume III, storage water heaters with inputratings above 75,000 Btu per hour, circulating and instantaneousNovember 2015 2015 CSA Group 1ContentsInterpro

39、vincial Gas Advisory Council 4Z21/83 Technical Committee on Performance and Installation of Gas Burning Appliances and RelatedAccessories 6CSA Technical Committee on Gas Appliances and Related Accessories 9Joint Technical Advisory Group on Standards for Gas-fired Water Heaters 12Preface 171 Scope 20

40、2 Reference publications 223 Definitions 264 Construction 374.1 General construction 374.2 Materials 434.3 Combustion air supply 464.4 Water heater openings 474.5 Burners 474.6 Flame spreaders 484.7 Primary air adjustment means 494.8 Main burner orifices and orifice fittings 504.9 Automatic gas igni

41、tion systems 514.10 Pilot gas filters 554.11 Gas connections 554.12 Opening for relief valve 584.13 Dip tubes 584.14 Manually operated gas valves 584.15 Gas appliance pressure regulators and gas pressure switches 594.16 Adjustment of minimum input rating 604.17 Thermostats 614.18 Automatic valves an

42、d safety shutoff valves 614.19 Bleeds and vents 624.20 Automatic gas shutoff systems 624.21 Relief valves 634.22 Condensate disposal 644.23 Flue collars 644.24 Flue pipe extensions 654.25 Draft hoods 654.26 Automatic vent damper devices 664.27 Automatic flue damper devices 664.28 Electrical equipmen

43、t and wiring 684.29 Vent and air intake pipes of direct vent systems 82ANSI Z21.10.3-2015 CSA 4.3-2015Gas-fired water heaters, volume III, storage water heaters with inputratings above 75,000 Btu per hour, circulating and instantaneousNovember 2015 2015 CSA Group 24.30 Instructions 834.31 Marking 95

44、5 Performance 1065.1 General 1065.2 Test gases 1125.3 Test pressures and burner adjustments 1145.4 Combustion 1145.5 Category determination 1165.6 Burner and pilot operating characteristics 1215.7 Piloted ignition systems 1235.8 Proved igniter systems 1285.9 Direct ignition systems 1305.10 Efficienc

45、y 1325.11 Gas appliance pressure regulators 1325.12 Automatic valves and safety shutoff valves 1325.13 Temperature control 1325.14 Storage heater temperature limits 1335.15 Temperature limiting devices 1355.16 Evaluation of burn hazard potential of exterior surfaces 1375.17 Wall, floor and ceiling t

46、emperatures 1405.18 Flue gas temperature 1435.19 Temperature of manually operated parts 1445.20 Burner and flame spreader temperatures 1455.21 Draft hoods 1465.22 Draft tests for water heaters equipped with power burners 1495.23 Automatic vent damper devices 1525.24 Automatic flue damper devices 152

47、5.25 Wind test 1555.26 Safety circuit analysis 1585.27 Capacities of storage vessels 1585.28 Capacities of tube type water heaters 1595.29 Hydrostatic test 1595.30 Non-metallic dip tubes 1605.31 Burner durability 1635.32 Venting systems for Category II, III, or IV water heaters 1635.33 Rain tests 16

48、45.34 Direct vent systems 1665.35 Marking material adhesion and legibility 1736 Manufacturing and production tests 1747 Items unique to the United States 1757.1 High altitude 1757.2 Thermal efficiency 1757.3 Temperature and pressure relief valves 1757.4 Marking material adhesion and legibility 1757.

49、5 General construction and assembly 176ANSI Z21.10.3-2015 CSA 4.3-2015Gas-fired water heaters, volume III, storage water heaters with inputratings above 75,000 Btu per hour, circulating and instantaneousNovember 2015 2015 CSA Group 38 Items unique to Canada 1768.1 High altitude 1768.2 Relief valves 1768.3 Storage vessels 1768.4 Outdoor installation 1768.5 Marking material tests 1768.6 Draft hoods 1768.7 Pilot burners and safety shutoff devices 1778.8 Thermal efficiency 1778.9 French translations for quoted instructions and markings 177Annex A (normative)