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18、them immediately . Use of this document constitut es your acceptance of the terms and conditions of this Legal Notice.Revision HistoryANSI Z21.47-2016 CSA 2.3-2016, Gas-fired central furnacesRevision from previous edition Revision symbol (in margin)Clauses 1.1 , 1.8 , 1.9 , 1.10 , 1.12 , 1.14 , 1.16
19、 , 3, 4.5.6 , 4.6.10 , 4.7.5 , 4.10.3 , 4.10.19 , 4.11.5 , 4.11.6 , 4.12.3 , 4.12.4 , 4.14.14 , 4.14.15 , 4.17.1 , 4.17.4 , 4.17.10 , 4.17.24 , 4.18.2 , 4.22.3 , 4.23.6 , 4.25 , 4.26.3 , 4.26.5 , 5.1.1 , 5.1.3 , 5.4 , 5.5.3 , 5.7 , 5.8.1 , 5.8.4 , 5.10.12 , 5.12.6 , 5.19.1 , 5.19.2 , 5.20 , 5.21 , 5
20、.22 , 5.27.4 , 5.27.6 , 5.29.4 , 5.30 , 5.33.2 , 6.9.3 , 6.11.2 , 7.4.5 , 7.7 , 8.1.3 , 8.9.1 , 8.10.3 , 9.1.1 , 9.5.1 , 9.5.2 , 11.6.1 , 11.7 , 12.1 , 13.3 , G.2.5 , H.1.1 , H.3 , and S.2Standards Update ServiceANSI Z21.47-2016 CSA 2.3-2016November 2016Title: Gas-fired central furnacesTo regist er
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38、3-6727 or 416-747-4044.A trademark of the Canadian Standards Association and CSA America Inc., operating as “CSA Group”American National Standards Institute, Inc.Interprovincial Gas Advisory CouncilApproved on Octo ber 28, 2016 by ANSIApproved on Augus t 20, 2016 by IGACEffective in Canada May 1, 20
39、18Gas-fired central furnacesANSI Z21.47-2016 CSA 2.3-2016ANSI Z21.47-2016 CSA 2.3-2016Gas-fired central furnacesNovember 2016 2016 CSA Group 1ContentsInt erpro vincial Gas Advisory Council 5Z21/83 Technical Committ ee on Performance and Inst allation of Gas Burning Appliances and Relat ed Accessorie
40、s 7CSA Technical Committ ee on Gas Appliances and Relate d Accessories 11Z21/CSA Joint Technical Subcommitt ee on Standards for Gas-Fired Central Furnaces 13Preface 171 Scope 212 Reference publications 233 Definitions 284 Cons truction 414.1 General construc tion and assembly 414.2 Mat erials 444.3
41、Polymeric mat erials in air handling compartments 474.4 Casings, ext ernal parts, and openings 484.5 Accessibility 494.6 Gas supply lines 504.7 Orifice spuds and orifice fit tings 534.8 Combus tion air supply and contr ol 544.9 Main burner s and flame spreaders 564.10 Automatic gas ignition s ys tem
42、s and pilot filt ers 584.11 Gas flow contr ols 604.12 Limit and fan controls 634.13 Condensat e disposal 644.14 Draft hoods, flue connections, and int egral venting sy st ems 654.15 Automatic vent damper devices 684.16 Motor s and blower s 704.17 Electrical equipment and wiring 714.18 Pr ot ection o
43、f service per sonnel 814.19 Furnaces for ins tallation downstre am fr om refrigeration sy st ems 834.20 Cooling sections of furnaces with cooling units 844.21 Enclosed furnaces 844.22 Ins tructions 854.23 Ins tallation manuals 864.24 Maint enance and service manuals 984.25 User s information manual
44、994.26 Furnace markings 1025 Performance 1155.1 General 115ANSI Z21.47-2016 CSA 2.3-2016Gas-fired central furnacesNovember 2016 2016 CSA Group 25.2 Basic tes t arrangements 1175.3 Tes t ducts and plenums 1205.4 Tes t Gases 1255.5 Tes t pressures and burner adjust ments 1265.6 Static pressure and air
45、 flow adjust ments 1275.7 Cat egory deter mination 1295.8 Combus tion 1325.9 Burner operating charact erist ics 1345.10 Pilot burners and safety shutoff devices 1365.11 Direct ignition sy st ems 1425.12 Pr oved ignit er sy st em 1445.13 Flame roll -out safety shutoff means 1475.14 Manifold and contr
46、 ol assembly capacity 1485.15 Corr osion resis tance 1485.16 Flue gas tempe rature 1485.17 Allowable heating element temperatures 1495.18 Flue gas baffle tempe ratures 1505.19 Main burner and flame spreader tempe ratures 1515.20 Blocked vent shutoff sys tem 1525.21 Burner blocked inlet 1535.22 Draft
47、 hoods 1535.23 Automatic vent damper devices 1565.24 Draft tes ts for furnaces not equipped with draft hoods 1595.25 Filt er s 1605.26 Allowable air tem peratures 1615.27 Wall, floor , and ceiling tempe ratures 1635.28 Temperatures of furnaces for line contact ins tallation 1715.29 Operational tes t
48、s of electrical components and parts 1715.30 Safety circuit analysis 1775.31 Furnaces for ins tallation downstre am fr om refrigeration sy st ems 1785.32 Enclosed furnaces 1785.33 Condensat e disposal s ys tem(s) 1805.34 Condensat e drain s ys tem locat ed in blower compartment 1815.35 Venting s yst
49、 ems for Category II, III, or IV furnaces 1815.36 Furnaces vented horizontally throu gh an outside wall 1825.37 Heating element cycling tes t 1925.38 Marking mater ial adhesion and legibility 1945.39 Surface tem peratures 1955.40 Thermal efficiency 1956 Direct vent central furnaces cons truction 1976.1 Scope 1976.2 General construc tion and assembly 1986.3 Mat erials 1986.4 Casings, ext ernal parts, and openings 1996.5 Accessibility 1996.6 Combus tion air supply and contr ol 1996.7 Main burner s and flame spreaders 1996.8 Vent -air intake pipes 200ANSI Z21.4
