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18、quired to destr oy them immediately . Use of this document constitut es your acceptance of the terms and conditions of this Legal Notice.Revision HistoryRevisions from previous edition Revision symbol (in margin)Clauses 1.3 , 1.13 , 3, 4.1.2 , 4.1.26 , 4.8.3 , 4.10.11 , 4.11.10 , 4.20 , 4.20.1 , 4.2
19、0.2 , 4.20.14 , 4.21.2 , 4.21.3 , 4.21.4 , 4.21.10 , 4.21.27 , 5.1.1 , 5.1.13 , 5.2 , 5.3.3 , 5.4.1 , 5.4.2 , 5.6 , 5.11.4 , 5.12 , 5.12.1 , 5.12.2 , 5.12.3 , 5.12.4 , and 5.12.5Annex JFigures 7 and 8Standards Update ServiceANSI Z21.11.2-2016November 2016Title: Gas-fired room heaters, volume II, unv
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37、a.caor call to ll-free 1-800-463-6727 or 416-747-4044.A trademark of the Canadian Standards Association and CSA America Inc., operating as “CSA Group”American National Standards Institute, Inc.Approved on November 7, 2016 by ANSIGas-fired room heaters, volume II, unvented room heatersANSI Z21.11.2-2
38、016ANSI Z21.11.2-2016Gas-fired room heaters, volume II, unvented room heatersNovember 2016 2016 CSA Group 1ContentsZ21/83 Technical Committ ee on Standards for Performance and Insta llation of Gas Burning Appliances and Relate d Accessories 3Z21 Technical Subcommitt ee on Standards for Unvent ed Gas
39、Fired Heating Appliances 7Preface 111 Scope 142 Reference publications 163 Definitions 184 Cons truction 274.1 General construc tion and assembly 274.2 Mat erials 304.3 Catalytic mat erials 324.4 Glass fr onts 324.5 Main burner s 324.6 Primary air openings and adjust ment means 334.7 Orifices and o
40、rifice fit tings 344.8 Automatic gas ignition s ys tems 344.9 Oxygen depletion safety shutoff sy st ems 364.10 Appliance main gas valve 374.11 Gas supply lines 384.12 Bleeds and vents 404.13 Thermos tats 404.14 Automatic valves and safety shutoff valves 414.15 Gas appliance pressure regulator s 414.
41、16 Adjus tment of minimum input rating 424.17 Pilot gas filt ers 424.18 Electrical equipment and wiring 434.19 Motor s and blower s 574.20 Ins tructions 584.21 Marking 665 Performance 785.1 General 785.2 Tes t gases 805.3 Inlet tes t pressures and burner adjustments 815.4 Combus tion 835.5 Burner op
42、erating charact erist ics 895.6 Automatic shut down of a univer sal unvente d roo m heat er 915.7 Pilot operating charact erist ics 915.8 Pilot burners and safety shutoff devices 925.9 Orifice and orifice fit ting tempe ratures 955.10 Direct ignition sy st ems 96ANSI Z21.11.2-2016Gas-fired room heat
43、ers, volume II, unvented room heatersNovember 2016 2016 CSA Group 25.11 Glass fr onts 975.12 Burn hazard pot ential 1005.13 Oxygen depletion safety shutoff sy st ems 1055.14 Appliance main gas valves 1065.15 Gas appliance pressure regulator s 1065.16 Automatic valves 1065.17 Safety circuit analysis
44、1075.18 Manifold and contr ol assembly capacity 1075.19 Wall, floor , and ceiling tempe ratures 1075.20 Surface tem peratures 1085.21 Evaluation of clothing ignition potenti al 1115.22 Temperature at discharge air opening 1125.23 Marking mater ial adhesion and legibility 1135.24 Catalytic mat erials
45、 1155.25 Stability of parts not permanently att ached to unvente d decorative r oom heat er s 1155.26 Catalys t longevity 1165.27 Catalys t quality 1166 Manufacturing and pr oduction t ests 116Annex A (normative) Glass t emperature calculation 119Annex B (normative) Sample failure modes and effects
46、analysis for component miswiring* 123Annex C (normative) Outline of lighting ins tructions for appliances equipped with continuous pilots 124Annex D (normative) Outline of operating instructi ons for appliances equipped with inter mitt ent pilot or interru pted pilot sy st ems 127Annex E (normative)
47、 Outline of operating instructi ons for appliances equipped with direct ignition sy st ems 130Annex F (informative) Pertinent references to ANSI Y14.15 133Annex G (informative) Wire color designations 134Annex H (informative) Recommended wire color usage 135Annex I (informative) Preferred graphic sy
48、 mbols of commonly used it ems, extract ed from stand ard ANSI/IEEE 315, Graphic sy mbols for electrical and electron ics diagrams, and abbreviations for these it ems 136Annex J (informative) Relationship of carbon dioxide to oxygen in the closed r oom tes t specified in Clause 5.13 138Annex K (info
49、rmative) Table of conver sion factor s 140Annex L (informative) Legibility and design of safety information in unvent ed r oom heat er markings and manuals 143ANSI Z21.11.2-2016Gas-fired room heaters, volume II, unvented room heatersNovember 2016 2016 CSA Group 3Z21/83 Technical Committee on Standards for Performance and Installation of Gas Burning Appliances and Related AccessoriesB.J. Swiecicki National Pr opane Gas Association, Frankfort, Illinois, USA Cat egory: Gas SupplierChairM.W. Wilber Crane Engineering, Plymouth, Minnesota, USA Cat ego
