Ao-smith 960 through 967 Manuel d'utilisateur

A.O.Smith\Service HandbookCyclone XHEExtra-High Thermal EfficiencyELS COVEREBTH Models 120 through 250 Series 960 through 967, 970 and 973Part No. TC-

ВТН SERVICE HANDBOOKINSTALLATIONAIR REQUIREMENTSMINIMUM AIR FOR COMBUSTION 10 Cubic Feet of Air Per 1000 BTUH2.5 CU.FTEXCESS AIRStoichiometric or theo

BTH SERVICE HANDBOOKINSTALLATIONMAKE-UP AIR Direct CommunicationEach opening shall have a free area not less than:1 square inch per 4000 BTUH total in

BTH SERVICE HANDBOOKNSTALLATIONMAKE-UP AIR Horizontal DuctsE.K ÌÌ opiMiin<| sImII hriVH <-1 liee nnl less IImm:1 s(|ii<iie im li pel vo

BTH SERVICE HANDBOOKINSTALLATIONCONTAMINATED AIR^ RUST CHIPSAlong with adequate make-up air, the quality of the air is important. Contaminants in comb

BTH SERVICE HANDBOOKINSTALLATIONMULTIPLE UNIT — WATER PIPINGA. O. Smith Water Products Co.Ashland City, Tennessee © 2004 13Technical Training Departme

ВТН SERVICE HANDBOOKINSTALLATIONCONDENSATIONThe average dewpoint of natural gas flue products is 127° F. Propane flue products is 119° F. With 70° F a

BTH SERVICE HANDBOOKOPERATIONOPERATIONSEQUENCE OF OPERATIONA. O. Smith Water Products Co.Ashland City, Tennessee © 2004 15Technical Training Departmen

BTH SERVICE HANDBOOKOPERATIONCONTROLSNORMAL INDICATIONS / READINGS / SETTINGS During Call for HeatOn/Off switch in the “on” positionWater Temperature

BTH SERVICE HANDBOOKOPERATIONCIRCUI BOARDSDISPLAY CIRCUIT BOARDIGNITION CIRCUIT BOARDI '1... 2.1.44»-1 1 2 •N81 2 -1 - • *...

BTH SERVICE HANDBOOKTROUBLESHOOTINGTROUBLESHOOTINGPRE-SERVICE TIPSCHECK THAT:• Insure 120 VAC power supply has correct polarity — check neutral (whit

BTH Service HandbookTABLE OF CONTENTSIntroduction...2InstallationClearances...

BTH SERVICE HANDBOOKTROUBLESHOOTINGTRANSFORMERSTEP 2120 VAC TO TRANSFORMERI 120VCO1m-%r'1^ o.i'iC —>1mm^ lonThoisSTEP 2: CHECK FOR 120 VA

BTH SERVICE HANDBOOKSTEPSTROUBLESHOOTINGTRANSFORMER (CONTINUED)24 VAC FROM TRANSFORMER‘m ' STEP 3: CHECK FOR 24 VAC AT TRANSFORMER CN4 PLUG ON C

BTH SERVICE HANDBOOKTROUBLESHOOTINGECO CHECKSTEP 4 24 VAC TO ECO24 VmBlack Black Redj I j |Red1 2 3I ^'12 •7^CN8 ◄-----1 2Ground_ t.rTy^Temper

BTH SERVICE HANDBOOKTROUBLESHOOTINGECO CHECK (CONTINUED)STEPS 24 VAC FROM ECOÌ24 V.Temperature/Eco Probe (Upper)Temperature1 2», Probe #2 (Lower)2 I-I

BTH SERVICE HANDBOOKTROUBLESHOOTINGTEMPERATURE PROBESTEP 6 TEMPERATURE PROBE RESISTANCELOWERTEMPERATURE PROBE PLUGohms1rSTEP 6: CHECK RESISTANCE OF TH

BTH SERVICE HANDBOOKTROUBLESHOOTINGPRESSURE SWITCH CONTINUITYSTEP 7 PRESSURE SWITCH CONTINUITY TESTNotes:Low Gas Pressure Switch (BTH 120 & 250 on

BTH SERVICE HANDBOOKTROUBLESHOOTINGBLOWERSTEP 8A 120 VAC TO BLOWER120V|iipii|M« 3 VBlower.-321 CN6 ISTEP 8A: CHECK FOR 120 VAC TO BLOWER FROM CN2 PLUG

ВТН SERVICE HANDBOOKTROUBLESHOOTINGBLOWER (CONTINUED)BTH 250, 962 & 966 SERIES ONLY (Models equipped with blower speed reduction board)STEP 8B 120

BTH SERVICE HANDBOOKTROUBLESHOOTINGPRESSURE SWITCH PERFORMANCESTEP 9A TAKE AIR AND GAS PRESSURE READINGS.Blower prover and blocked outlet pressureBlow

BTH SERVICE HANDBOOKTROUBLESHOOTINGPRESSURE SWITCH PERFORMANCE (CONTINUED)STEP 9B PRESSURE SWITCH CONTINUITY TEST — OPERATIONALAir pressure switchesLo

BTH SERVICE HANDBOOKINTRODUCTIONINTRODUCTIONThis service handbook is designed to aid in servicing and troubleshooting A. O. Smith BTH 120 - 250 water

BTH SERVICE HANDBOOKTROUBLESHOOTING120 VAC TO IGNITORSTEP 10A120 VAC TO IGNITORIGNITOR 6 5 4 •STEP 10A: CHECK FOR 120 VAC TO IGNITOR FROM PIN 1 AND

BTH SERVICE HANDBOOKSTEP 10BTROUBLESHOOTING120 VAC TO IGNITOR (CONTINUED)BTH 250, 962 & 966 SERIES ONLY (Models equipped with blower speed reducti

BTH SERVICE HANDBOOKTROUBLESHOOTINGIGNITOR RESISTANCESTEP 11 IGNITOR RESISTANCE CHECK fCN6 CN1 CN2STEP 11: CHECK RESISTANCE BETWEEN TWO WIRE C

BTH SERVICE HANDBOOKTROUBLESHOOTINGGAS VALVE TESTSTEP 1224 VAC TO GAS VALVESTEP 12: CHECK FOR 24 VAC TO GAS VALVE DURING TRIAL FOR IGNITION.Condition:

BTH SERVICE HANDBOOKTROUBLESHOOTINGGAS PRESSURE CHECKAttach manometer or gas pressure gauge to pressure tap on gas valve or use adapter to check press

BTH SERVICE HANDBOOKCOMPONENT INFORMATIONCOMPONENT INFORMATIONFLAME SENSING RODAOS PART NUMBER FLAME SENSING CURRENT COMMENTS1924780.7 Micro Amp (p)BT

BTH SERVICE HANDBOOKCOMPONENT NFORMATIONPRESSURE SWTCHESPRESSURE SWITCH LAYOUT PRESSURE SWITCH WIRINGNotes:Low Gas Pressure Switch (BTH 120 a 250 onl

BTH SERVICE HANDBOOKCOMPONENT INFORMATIONPRESSURE SWITCHES (CONTINUED)PRESSURE SWITCHES PART NUMBER / ACTIVATION PRESSURE^Model Series Blocked Inlet N

BTH SERVICE HANDBOOKWIRING DIAGRAMSWIRING DIAGRAMSBTH 120 -199/ ALL SERIESBTH 250 / 970 SERIES(without blower speed reduction)DETAIL BTH 250962 &

BTH SERVICE HANDBOOKSERVICE AIDSSERVICE AIDS1. This type product is polarity sensitive. Be certain that your eiectricai suppiy wire neutrai has no voi

BTH SERVICE HANDBOOKINSTALLATIONINSTALLATIONCLEARANCESCEILING‘1.5l_gpjWALLREAR WALL.ÜT. 0" ,LEFTRIGHTWALLRIGHTWALLFRONT VIEW*For removal of top c

BTH SERVICE HANDBOOKSERVICE AIDSBTH MUFFLERuI, 4” X 3” PVC REDUCING COUPLING4” X 4” PVC COUPLINGSUPPORT (FIELD SUPPLIED)4” PVCII(BOTH ENDS) \fii3” PVC

BTH SERVICE HANDBOOKQUESTIONS AND ANSWERSQUESTIONS AND ANSWERSQ. How much electrical power is required for a BTH water heater?A. The BTH models draw a

BTH SERVICE HANDBOOKERROR CODESERROR CODESCODE INDICATION00 This is normal operation, 00 is displayed each time the heater is powered up.01Indicates t

BTH SERVICE HANDBOOKSERVICE CHECKLISTSERVICE CHECKLISTThis is not intended to be and all-inclusive list of the problem that the Service Agent may enco

ВТН SERVICE HANDBOOKPARTS LISTS/дЛ,, c 1ТТГ^ IWATER PRODUCTS COIVIPAM YCOMMERCIAL WATER HEATER PARTS LISTMODEL BTH -120, 150,199,250 SERIES 970 &

BTH SERVICE HANDBOOKPARTS LISTSBTH 1200-250CLEANOUT ASSEMBLY 2EXHAUST ELBOW & VENT KIT FARTS'% <>.. ( >1n60 ILI63-^-N^ 62636118161

BTH SERVICE HANDBOOKPARTS LISTSGAS VALVEf h"t 'BURNER ASSEMBO^ 75 7069A. O. Smith Water Products Co.Ashland City, Tennessee © 2004 45Techni

BTH s E R V 1 C E HAN D B 0 0 K#DESCRIPTIONpBTH 120 970ARTSBTH 120 973LISTSBTH 150 970BTH 150 973BTH 199 970BTH 199 973BTH 250 9701 Cleanout Cover If?

B T H s E R V 1 C E HAN D B 0 0 KpARTS LISTSarvCer'DIDXir^MBTH 120 BTH 120 BTH 150 BTH 150 BTH 199 BTH 199 BTH 250970 973970 973 970 973 97044 li

ВТН SERVICE HANDBOOK PARTS LISTSZ^o SEfflDUE]WATER PRODUCTS COMPANYCOMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE MODEL BTH -120 SERIES 966/967 (PARTIA

BTH SERVICE HANDBOOKNSTALLATIONVENTINGEquivalent Feet of Pipe Intake or ExhaustVENT LENGTH TABLENUMBER OF 90° ELBOWS3” MINIMUM PIPE (FEET)3” MAXIMUM P

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELBTH -120 WATER HEATER PARTS LIST (PARTIAL) SERIES 966/967ITEM DESCRIPTION BTH -1201ii Anode 043817-0292

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH -120 CONTROLS PART LIST — SERIES 966/967966 = NATURAL GAS967 = PROPANE GASITEM DESCRIPTIONBTH-1

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH -120 BURNER & BLOWER PARTS LIST — SERIES 966/96715ITEM DESCRIPTION BTH-1201Nat Burner 194114-

ВТН SERVICE HANDBOOKPARTS LISTSWATER PRODUCTS COMPANYCOMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE MODEL BTH -150, BTH -199SERIES 966 & 967 (PARTI

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELS BTH -150 & BTH -199 SERIES 966 & 967 CONTROLS PARTS LIST (PARTIAL)ITEM DESCRIPTIONBTH -150 NA

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELSBTH -150 & BTH -199 SERIES 966 & 967 CONTROLS PARTS LISTBTH -150 BTH - 199ITEM DESCRIPTIONNATU

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELSBTH -150 & BTH -199 SERIES 966 & 967 BURNER & BLOWER PARTS LISTBTH-150 BTH-199ITEM DESCRIP

BTH SERVICE H A N D B O O KPARTS LISTSra. SKanTrraWATER PRODUCTS COMPANYCOMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE^ MODEL BTH - 250SERIES 966 (PART

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH - 250 WATER HEATER PARTS LIST (PARTIAL)SERIES 966ITEM DESCRIPTION BTH - 2501Anode043817-0532Panel

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELS BTH - 250 CONTROLS PARTS LIST — SERIES 966ITEM DESCRIPTION BTH - 2501 Transformer192608-0012 Control

BTH SERVICE HANDBOOKINSTALLATIONVENTING CONFIGURATIONSz[#IC IC IC IC IC IC IC IC IC IC—p l_l l_lSEALED DIRECT VENT VERTICALSEALED DIRECT VENT SIDEW

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELSBTH - 250 BURNER & BLOWER PARTS LIST — SERIES 966ITEM DESCRIPTION BTH-2501 Burnor 194114-002

ВТН SERVICE HANDBOOKPARTS LISTSё^РХППТгГЯWATER PRODUCTS COMPANYCOMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE MODEL BTH -150, BTH-199SERIES 960 (PARTIA

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH -150 & BTH -199 WATER HEATER PARTS LIST — SERIES 960ITEM DESCRIPTION BTH -150 BTH -1991 II An

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELBTH -150 & BTH -199 WATER HEATER PARTS LIST — SERIES 960ITEM DESCRIPTIONBTH-150 BTH -1991 II Transf

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH -150 & BTH -199 BURNER & BLOWER PARTS LIST — SERIES 960ITEM 1 DESCRIPTIONBTH-150 BTH -199

ВТН SERVICE HANDBOOKPARTS LISTSаКЛПТгГЯWATER PRODUCTS COMPANYCOMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE® MODEL BTH - 250SERIES 962 (PARTIAL PARTS L

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELBTH - 250 WATER HEATER PARTS LIST (PARTIAL)SERIES 962ITEM DESCRIPTION BTH - 2501I Anode 043817-0042I

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELS BTH - 250 CONTROLS PARTS LIST — SERIES 962ITEM DESCRIPTION BTH - 2501 Transformer 192K0f?-0012I Contr

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELSBTH - 250 BURNER & BLOWER PARTS LISTS — SERIES 96217ITEM 1 DESCRIPTIONBTH-2501 1 Burner192416-00

ВТН SERVICE HANDBOOKPARTS LISTSWATER PRODUCTS COMPANY/д¿5?COMMERCIAL WATER HEATER PARTS LISTCYCLONE XHE MODEL BTH -150 & BTH -199SERIES 962 (PARTI

ВТН SERVICE HANDBOOKINSTALLATIONCONCENTRIC VENT TERMINATIONThe concentric vent termination kit, Part No. 194451-000 can be used on BTH 120 - 250 Cyclo

ВТН SERVICE HANDBOOKPARTS STSCYCLONE XHE® MODELBTH -150 & BTH -199 WATER HEATER PARTS LIST — SERIES 962ITEM DESCRIPTIONBTH -150 BTH -1991li Anode

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELSBTH -150 & BTH -199 CONTROL PARTS LIST — SERIES 962TO BLOWERITEM DESCRIPTION BTH -150 BTH -19911

ВТН SERVICE HANDBOOKPARTS LISTSCYCLONE XHE® MODELSBTH -150 & BTH -199 BURNER & BLOWER PARTS LISTSERIES 962ITEM DESCRIPTION BTH -150 BTH -1991

BTH SERVICE HANDBOOKPARTS STSNOTESTechnical Training DepartmentTC-044 Revision 6 72A. O. Smith Water Products Co.Ashland City, Tennessee © 2004

Visit the “Information Central” link of www.hotwater.com for a listing of available Service Handbooks.For additional information contact: A. O. Smith

BTH SERVICE HANDBOOKINSTALLATIONVENTING CLEARANCESThis illustrates the exterior clearances for these BTH units when installed as direct vent heaters.N

BTH SERVICE HANDBOOKNSTALLATIONEXTERIOR SIDEWALL CLEARANCES Horizontal Vent (Using Room Air for Combustion)When multiple units are directly vente