Instruction/ maintenance manual of the product Flammable Vapor Ignition Risistant Water Heaters Bradford-White Corp
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Save this manual for future reference Manual 238-44943-00D SERVICE MANUAL Troubleshooting Guide and Instructions for Service FEATURING (To be performed ONLY by qualified service providers) For the Bra.
The Bradford White DEFENDER Safety Sys tem ® Flammable Vapor I gnition R esistant Wate r Heaters Table of Conte nts Page Service Procedure Introduction 3 - - - Trouble shooting Chart 4 - - - Inner Do.
Th e Bradfo rd Whit e DEFE NDER Safet y Syste m ® Th e Brad for d Wh ite DE FENDE R Saf ety Syst em ® was desig ned to resist the ig nit ion of fl amma ble va por s that ca n occ ur outs ide of t he wat er heat er. Us e and in sta llat ion are nearly id en tica l to pre vious ve rsi ons of atm osph erica lly fi red an d vente d wate r heat ers.
White Rod gers/Rob ertshaw Ga s Valve Tro ubleshoo ting Chart SYMPTO M PROBABL E CAUSE CORRECT IVE ACTION Pilot Will Not Light 1. N o inco ming g as or to o low g as pre ssure. 2. Gas c on trol kn ob set to wr ong po siti on. 3. Pi lot l ight bu tton not b eing full y dep res sed wh en a tte mpt ing to l igh t p ilot .
Hon eywell Gas Control T rouble shootin g Char t LE D Status Cont rol Stat us Prob able Caus e None (LED n ot on or fla shing Gas Control is oper ating normall y. Pilo t flame may not be present . Check fo r pilot flame throug h si ght glas s and light if nec essary.
Hon eywell G as Contr ol Troubles hootin g Char t LE D Status Cont rol Stat us Prob able Caus e Five flashes and three seco nd pause Therm ostat/w ell sensor faul t.
Inner Do or Removal Procedur e Step 1. Rot ate knob of the comb ina tion ther most at/gas valve to the “O FF” p ositi on. Step 2. Re move oute r j ack et burn er acc ess door Step 3. In ner D oo r Re mova l. a) Disconnect resett able thermal switch wire leads (l eading from Gas Control/gas valve) .
Instal lation of Inner Doo r With Gas ket. WARNING Stripp ed fastener connectio ns may allo w for seal breach of inner door. A seal brea ch may result i n a fire or explosi on causin g property damage, perso nal injury or d eath. Do not over tighten sc rews in steps 8, 10 and 11.
St ep 10. Fir mly place right s ide inner doo r flang e agai nst th e le ft si de inne r door fla nge and secur e with (2) he x dri ve screws from step 3c.
St ep 1 . C losed ci rcui t tes tin g is th e pre fe rred meth od fo r te sti ng th er mocou ple. Fol lowi ng t he li ghti ng in str ucti on labe l o n the heat er, proceed to li ght t he pilo t and a llow t o ope rate fo r th ree mi nuet s.
THERMOCOUPLE REP LACEMENT (Whit e Rodgers/Robertshaw Ga s Valve) Ste p 1 . Tu rn off gas su pply to wa t er he ate r. R ot ate kn ob of comb ina ti on the rm ost at /ga s valv e to “O FF” p o siti on. Step 2. Remov e outer j acket door . Step 3. Remove right si de of inner d oor per SERV ICE PROCEDURE RG-I, steps 3a t hrough 3c.
The f oll owin g t est s hou ld be perf orm e d whi le th e pi lot f lam e is on. St ep 1. Tu rn kn ob to pilo t pos iti on and depr ess. Step 2. Con tinu e pre ssin g knob and remo ve r ed ( +) wi re from r ese tt able the rmal door swit c h. Step 3.
PILOT /ELECT RODE ASS EMBLY INSPE CTION, CLEANING AND REPLACE MENT St ep 1. Tu rn off gas s upply to wat er h eater. Rotat e knob of gas c on trol/ ga s v alve to “O FF” p osi tion . Step 2. Rem ove oute r j ack et do or . St ep 3. Re move r igh t side o f in ner d oor p er SERVICE PROCEDURE RG-I, st eps 3a t hro ugh 3 c.
PIEZO IGNITER, ELECTRODE TESTING AND REPLACEMENT With the pilo t not in op erat io n (no pilo t flam e) yo u can check the Piezo a nd e lec trod e ci rcui t by v iewi ng p ilot thr u th e sight glass loca ted on the i nner door and ob servi ng th e spa rk acti on.
SERVICE PROCE DURE RG-V Gas Valve Testing and R eplacement ( W hit e Rodgers/Robertshaw) The gas va lve is a non r epai rable devi ce. If troub le sh ooti ng has d eter mine d a pro blem with the ga s valve , it must b e repl aced.
See SERVICE PRO CEDURE RG-II THERM OCOUPL E TESTI NG MAGNET ASSEMBLY T ESTING (White Rodgers Control) Ste p 1. Fo llow ing t he li ghti ng instru cti on label on the he ater, proc eed to li ght t he p il ot and al low t o ope rat e f or thre e min uets.
COMBINATION THERMOST A T/GAS V ALVE REPLACEMENT Step 1 . Rot ate kn ob of th e ga s valv e to th e “O FF ” pos iti on. Step 2. Turn off gas supply to water hea ter. Ste p 3. D isc onnec t gas sup ply l ine f rom gas valv e. Ste p 4. Tu rn off water supp ly and drai n wate r heat er co mple tely .
Step 7. Removal of gas valve. a) Disconnect main burner f eedline, pilot tube and thermocouple from gas valve & remove burner from combustion chamber . NOTE: Feed line nut for natural gas control uses right hand threads, LP control us es left hand threa d.
Step 9. Re installation of inner door assembly. (cont.) b) Clean a ny g asket r esi due o r other debr is fr om co mbust ion c hambe r sur face b efore i nst alling the in ner d oor /ga sket a sse mbly . c) P osit ion t hermoc oup le, pi lot t ube an d Pie zo w ire agai nst left s ide i nner door f lange gask et.
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® Honey well Gas Control T esting, D isasse mbly, and Rep laceme.
SERVICE PROCEDURE RG -VI Gas Control Testing, Disassembly & Replacement (Honeywell) The Bradford White DEFENDER Safety Sy stem ® MANIFOLD P RESSURE T ESTING (this proce dure presu mes a maxi mum line pr essure of 14 .0" w.c.) St ep 1. Set the Gas Cont rol to th e “OFF” posi tion .
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® TEMPERAT URE S ENSOR TES TING Tempe rat ure Sensor Test ing Fol low ing “ Gas Co ntr ol Dis assem bly/ Reasse mbly” inst ruc tions, disa ssembl e Gas Co ntr ol to a cces s te mpe rat ure se nsor .
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® ° F 012345678 9 40 26109 25400 24712 24045 23399 22771 22163 .
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® GAS CONTROL DISASS EMBLY/ REASSEMBL Y St ep 1. Ro ta te kno b of the Gas Cont rol to th e “OFF ” pos iti on. Step 2.
SERV ICE PROCEDURE R G-V I Gas Control Testing, Disassembly & Replacement (Honeywell) The Bradford White DEFENDER Safety S ystem ® GAS CONTROL DISASSEMBL Y/REASSE MBLY Step 8. D isconn ect te mper ature s ens or fr om con trol b oard and r emove wire f ro m the tem pera ture senso r wire ro utin g cli p.
SERV ICE PROCEDURE R G-V I Gas Control Testing, Disassembly & Replacement (Honeywell) The Bradford White DEFENDER Safety S ystem ® GAS CONTROL DISASSEMBL Y/REASSE MBLY Step 11.
Temperat ure sensor Insertion s t ick SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re placement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® GAS CONTROL DISASS EMBLY/ REASSEMBL Y St ep 12. Remov e t emper ature s ens or fr om i nsert ion s tick by pu llin g apar t as illu stra ted belo w.
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® GAS CONTROL REPLACE MENT Ste p 1. R ota te kno b of t he Gas Cont rol to th e “OFF ” pos iti on. Step 2. Turn off gas supply to water hea ter.
SERVICE P ROCEDURE RG- VI Gas C ontrol Testing, Disassembly & Replacement (Honeywell) The Bradford White DEFENDER Safety System ® GAS CONTROL REPL ACEMENT b) Re att ac h ma in bu rn er f eed line , p il ot tu be, pie zo ig ni ter w ir e, i nne r do or wi re (re d) and t herm op il e wi re (white) to G as C o ntrol.
SERVICE PROCEDUR E RG-VI Gas Control Testing, Disassembly & Re pl a cement (Honeywell) The Bradford W hite DEFENDER Safety Sys tem ® GAS CONTROL REPLACE MENT Step 9.
Step 1. W it h ma in bu rne r i n ope rat ion , re mov e r ight side i nne r door pe r SE RVIC E P ROC EDUR E I , s teps 3b & 3 c. Be s ure t o ma inta in wi re con nec tion to rese tta ble th erm al sw itch for th is ad justme nt p ro cedure . St ep 2.
Step 3. Fully ins pect i nner ga sket per SE RVICE PR OCEDURE RG-I, s tep 4 . Replac e gas ket if r equi red fol lowing SERVICE PROCEDURE I, ste ps 5 & 6.
Step 5 . Discon nect ( unscr ew) Main burner (ste el) f rom ma in burner or ifice or on ca st iron burner s (“C” burner), loo sen air shutter & dis conne ct (u nscre w) f eedli ne from bur ner. St ep 6. Remove ma in burner orif ice fro m fee d line.
Ste p 1. Remo ve ou ter j acket d oor . Step 2. Di sco nnect wire leads from res ettab le th erma l swit ch. Ste p 3. Using a mu ltim eter cap able o f mea surin g cont inui ty (O hms) , place o ne pr.
RESET TABLE THE RMAL SWITCH REP LACEMENT Ste p 1. Rota te kn ob o f c ombi nati on th ermo sta t ga s valv e to the o ff posi ti on. Step 2 . Rem ove ou ter jacket door. Step 3 . Disco nnect wire leads from re settab le ther mal sw it ch. Ste p 4. Remo ve re setta ble the rma l swi tch f rom inne r doo r (P hilli ps sc rew driv er) Step 5 .
SERVICE PROCEDU RE RG -IX Screen Lok ® Flame Arrestor Cleaning St ep 1. Rotat e knob of comb in atio n therm ostat g as v alve t o the o ff pos iti on. St ep 2. Remove ou te r jacket door. Step 3. R emo ve i nner do or pe r SER VIC E P ROCED URE RG- I, st ep 3 a thr ou gh 3e .
SERVICE PROCE DURE RG -X Dip Tube a nd Anode Inspection and R eplacement St ep 1. Rotat e kno b of com binatio n the rmost at/g as valv e to “O FF” p ositi on. Step 2. Tu rn of f co ld wate r su pply to hea ter. Co nne ct ho se to d rai n va lve of wate r he at er a nd r oute to a n o pen drai n.
St ep 1. Turn off wat er sup ply to w ate r heater . Rotat e kno b of com binat ion the rmost at/g as valv e to “O FF” pos ition . Step 2. Tu rn of f co ld wate r su pply to hea ter. Co nne ct ho se to dr ai n va lve of wa ter he ate r a nd rou te to a n op en dr ai n.
1 Dra ft Hood 2 Hot W ater Outle t/Ano de 3 Col d Wate r I nlet T ube 4 Flue Baffle 5 T&P Relief Valve 6A Gas Control (Honeywe ll) 6B Gas Valv e (R obertsh aw) 6C Gas Valv e (Whi te Ro dger s) 7 P.
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