Bradford WhiteメーカーM-2-50T6DSの使用説明書/サービス説明書
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Save this manual for future reference Manual 238-47104-00A SERVICE MANUAL Troubleshooting Guide and Instructions for Service (To be performed ONLY by qua lified servi ce providers) Models Covered by This Manual: Residential Energy Saver: M1& M2(HE) UprightModels.
Table of Con tents Page Serv ice Pr ocedure Introduction …………………………………………… …………………………. 2 Tools…………………………………………….
GENERAL INFORMATION 120 VOLT Ungro unded Grounded (Neutra l) Grou ndin g BLACK WHI TE GRE EN 120 0 120 240 VOL T Ungroun ded Ungr oun d ed Groun ding BLACK RE D GRE EN 240 120 120 120 ABC N eutral RED.
GENERAL INFORMATION Watt age Limi tation s at Various Vo ltage s Resid ential Elec tric Upright M1 & M2 Series (Non- Simultan eous opera tion) M ax im um Wat t a ge E lement Uppe r/ Lo we r Volta .
GENERAL INFORMATION Surf ace M ount Com bin ati on T her mos tat / ECO (high limit) 89T Ser ies Ma nual E CO (high limit) R es et bu tton Tem per at ure con trol D ia l Tem per at ure c ontr ol Dial S.
SEQU ENCE OF OP ERAT IO N R esiden tial and l ight duty commercial electric water heat ers are designe d to operate using se veral diff erent operati ng m odes . The common m odes and sequenc e of oper ation ar e as fo llows: 1 . Singl e Element O peration.
Non-Simul taneous a nd Simultane ous Ope ration Doub le element el ectric water h eaters are de signed to operate in a Non-Simultan eous or Sim ultaneous mod e.
SEQU ENCE OF OP ERAT IO N Sequence of Oper ation- Double Element, Simultaneous Operation, Single Phase, 4 wire service installation. A 4 wire, dou ble elem ent heater w ired for s imultaneo us operati on is es sentiall y two singl e element system s operati ng i ndepe ndently.
SEQU ENCE OF OP ERAT IO N Sequence of Oper ation- Double Element, Non-Simultaneous Operation, 3 Phase. Line v oltage is appl ied acros s te rmin a ls L1 & L3 of up per thermos tat. Likewise, Li ne voltag e is appl ied to ter minal L3 of lower thermos tat.
SEQU ENCE OF OP ERAT IO N Line vol tage is a pplied ac ross terminal s L1 & L3 of uppe r thermostat . Line vol tage als o extends to terminal L1 of lower thermos tat.
SEQU ENCE OF OP ERAT IO N Sequence of Oper ation- Double Eleme n t, Non-Simultaneous Op eration, Sing l e Phase, Off Peak. Some el ectric uti lity compan ies will o ffer disco un ts for using elec tricity d uring “Off Pea k” Times of the day.
TROUBLESHOOTING Most common ca use for impr oper electric water heater opera tion can be linked to heating el ement failure. When trou bleshooti ng an ele ctric water he ater with the i ncidence of .
SYM PT OM PROB A BL E CAUS E COR RECTIVE ACTI ON No Hot Water 1 . No Po we r to he at er. 2 . Lo os e wire c onne cti ons. 3 . Inope ra tive u ppe r heat ing elem ent . 4 . Inope ra tive u ppe r the rmo stat . 5. O pe n E CO . 1. In opera tiv e lo wer he at ing e leme nt .
SERVICE PROCEDU RE RE- I Line Voltage & High Limit (ECO) Testin g WARNING High vo ltage exposure . Use caution w hen making voltag e checks to avo id person al injury. Line Voltage T esting Illustration 2 Il lus tra tio n 3 1. Turn “O FF” power t o water heater .
SERVICE PROCEDURE RE-II Heating Element Testing Step 1. TURN O FF POWER TO WAT ER H EATER. Step 2. Remove acc e ss cover(s) from fron t of water heater . Remove insulation an d plasti c cover f rom the rmostat. Step 3. Dis connect w ires fr om heating element.
SERVICE PROCEDURE RE -III Residential Thermostat Testing WARNING High voltage exp osure. Use caution t o avoid per s ona l inj ur y du rin g t his pr oc e dur e. Ill us tra ti on 6 Singl e Element Operation or Double Element, 4 Wire, Simultaneous, S ingle Phase Operation.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, Single Phase Operation. Water In Tank Is C old With Power ON. 1. This procedure assumes lin e voltage , ECO and elements are in worki n g ord er.
Doubl e E lement, Non-Simultaneous, Single Pha se Operation (continued). Not Enough H ot Water (continued). 7. Check voltage acro ss termin al L4 of up per thermost at and termi nal 1 of l ow er the rm o sta t (see ill ustration 11). A) Rate d voltage N OT pre sent, - check wire connec tion between thermosta ts.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation. Water In Tank Is C old With Power ON. 1 . This procedure assumes lin e voltage , ECO and elements are in worki n g ord er.
Double Element, Non-Simultaneous, Three Phase Operation ( continued). Tank D oes Not Deliver En ough Hot Water (continu ed) 7. Ch eck voltage across ter m ina l L1 & L3 of low er thermos tat (see il lustration 16). A) Rated voltage NOT present, check wire connecti on between th ermostats.
Double Element, Simultaneous, Three Phas e Operation. Water In Tank Is Cold O r Not Enough Hot Water With Power ON. 1. This proc edure ass umes lin e voltage , ECO and elements are in worki ng order. 2 . A djust tem perature set ting for both thermosta ts to the h ighest setting .
Double Element, Simultaneous, Three Phas e Operation (c ontinued). Water Temperature In Tank Is Above The rmostat Setting. 1. This procedure assumes Lin e voltage , ECO and elements are in worki n g ord er. 2. Adjus t upper and low er thermostat to the lowest settin g.
Double Element, Non-Simultaneous, Single Phase, Off Peak Oper ation. W ater In Tank Is C old With Power ON. 1. This proc edure ass umes lin e voltage , ECO and elements are in worki ng order. 2 . Turn p ow er “ON” to w ater heate r. 3. Set mu lti-meter to “Volts AC ”.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, Single Phase, Off Peak Operation. (continued) N ot Enough H ot Water (continued). 7. Check vol tage acr oss te rminal T4 o f upper thermosta t & T2 of lower The rmo stat.
SERVICE PROCEDU RE RE -IV Light Duty C omm ercial The rmos tat Tes ting WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. D ouble Element, Non-Simu ltaneous, Single Phase O peration. W ater In Tank Is C old With Power ON.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, S ingle Phase Operation (continued) T ank D oes Not Deliver En ough Hot Water (continued). 7. Ch eck voltage across ter m ina l L3 of up per thermosta t & T2 of low er Thermostat.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Simultaneous , Single Phase Operation. Water In Tank Is Cold O r Not Enough Hot Water With Power ON. 1. This proc edure ass umes lin e voltage , ECO and elements are in worki ng order.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Simultaneous , Single Phase Operation (c ontinued) Water Temperature In Tank Is Above The rmostat Setting. 1. This procedure assumes lin e voltage , ECO and elements are in worki n g ord er.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation. W ater In Tank Is C old With Power ON. 1. This procedure assumes lin e voltage , ECO and elements are in worki n g ord er.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation ( continued). Tank D oes Not Deliver En ough Hot Water (continued). 7. Ch eck voltage across ter m ina l L1 of up per thermosta t & T2 of low er Thermostat.
WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Illu stration 47 Illu stration 48 Double Element, Simultaneous, Three Phas e Operation. Water In Tank Is Cold O r Not Enough Hot Water With Power ON. 1. This proc edure ass umes lin e voltage , ECO and elem ents are i n working or der .
S ERVICE PROCEDU RE RE -IV Light Duty C omm ercial The rmos tat Tes ting WARNING High voltage exp osure. Use ca ution to avoid pers onal injury d uring this proced ure. Double Element, Simultaneous, Three Phas e Operation (c ontinued). Water Temperature In Tank Is Above The rmostat Setting.
SERVICE PROCEDURE RE -V Ther mostat Removal an d Repl acement Fr ont Vi ew Th ermos tat Moun ting The r m ostat Remo val 1. Turn p ow er “OFF” To water heat er. 2 . Re m ove ac cess cover a nd insul ation. 3. Re move plasti c thermostat prot ec tor from thermostat.
SERVICE PROCEDU RE RE -VI Heating Element Removal and Repla cem ent Heating Elem ent Removal 1. Turn p ow er “OFF” To water heat er. 2 . T urn of f col d wate r supp ly to he ater . Con nec t hose to d ra in spi got of w at er h eate r an d ro ut e to an o pen d rain .
Page 35 S tep 1. Turn p ower “OF F” to wat er hea ter. Step 2 . T ur n off col d wate r su pply to he at er. C onnec t hos e to dr ain spi go t of wat er hea te r and ro ute to an o pe n drain . Op en a near by ho t wat er fau cet t o vent he at er for dra ini ng.
Page 36 Ge ner ic Pa rts L ist 1. T&P Re lie f V al ve 2. He at Tr ap I nsert (Outl et) 3. Hot Wate r O utl et/ An ode 4. Cove r Co nd uit /Gr ou nd 5. Junc tio n B ox C ov er 6. Hea t Trap In sert ( Inl et) 7. Col d W ate r I nle t D ip Tube 8. Ther mo st at Pro tect or ( La rge ) 9.
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