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Bedienungsanleitung Bradford White M-2-50T6DS

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  • Bradford White M-2-50T6DS - page 1

    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. M1& M2 Lowboy Models. M1& M2 UtilityModels. M1& M2 Wall HungModels. Li ...

  • Bradford White M-2-50T6DS - page 2

    Table of Con tents Page Serv ice Pr ocedure Introduction …………………………………………… …………………………. 2 Tools……………………………………………………………………………… 2 General Information ……………………………………………………………… 3 - - - Sequence ...

  • Bradford White M-2-50T6DS - page 3

    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 BLACK RED 120 120 208 208 208 208 3P h 277 ABC N eutral RED BLACK RED 277 277 480 480 480 480 3Ph /277 1 Ph 120 ABC N eu t r al RED BLACK RED 120 120 ...

  • Bradford White M-2-50T6DS - page 4

    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 ge 3 ,0 00 0 2 1 0 0 0 , 3 / 0 0 0 , 3 6, 00 0 6 ,00 0/6, 000 208, 2 40 6 ,0 00 2 77, 480 Re si d en tial Elec tric Up right M1 & M2 Series (Simul ...

  • Bradford White M-2-50T6DS - page 5

    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 urfa ce Mount Th erm ost at 59T Seri es Su rfac e Mou nt Com bin ati on T her mos tat / ECO (high limit) 89T Ser ies Surface Mounte d Thermost ats Su ...

  • Bradford White M-2-50T6DS - page 6

    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. 2 . Double Element Non-Sim ultaneous Op eration (si ngle phase) . 3 . Double Element Non-Sim ...

  • Bradford White M-2-50T6DS - page 7

    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. Non-Simulta neous Mode: Allows onl y one hea ting elem ent to opera te at a time. For e xample, when the tank is cold , the upp er element is energi zed first, h eating th e top of the t an ...

  • Bradford White M-2-50T6DS - page 8

    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. The heaters are wired inter nally with two indep endent ci rcuits, one c ...

  • Bradford White M-2-50T6DS - page 9

    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. ECO in both upp er & lower t her mostat is closed, so there is v oltage at termina l L ...

  • Bradford White M-2-50T6DS - page 10

    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. Also , line vo ltage is applied to ter minal L 3 of lowe r thermostat . ECO in both upper & lower th ermostat i s closed, s o there is voltage at terminal L4 of both thermosta ...

  • Bradford White M-2-50T6DS - page 11

    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. The s y st em allow s the use of an “Off Peak” m ete r, which interrupts power to the lo w e r elem ...

  • Bradford White M-2-50T6DS - page 12

    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 “N o Hot Wa ter” or “In sufficient Amo unt of Hot Water ” Its alw ays a good i dea to che ck the heating elements fir st following the proced ur ...

  • Bradford White M-2-50T6DS - page 13

    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 . 2. Ther mo st at(s ) set to low . 3. I nope ra tiv e t herm o sta t(s) . 4. ...

  • Bradford White M-2-50T6DS - page 14

    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 . 2. Remov e access cover(s) from front of water heat er. Remove in sulation and ...

  • Bradford White M-2-50T6DS - page 15

    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. Step 4. Set mult i-me t er to “ oh ms” setting. Step 5. Touch p robes of m ulti-meter ...

  • Bradford White M-2-50T6DS - page 16

    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. Water In Tank Is C old With Power ON. 1 . This procedure assumes lin e voltag ...

  • Bradford White M-2-50T6DS - page 17

    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. 2. Turn p ow er “ON” to w a te r heater. 3. Set mu lti-meter to “Vol ...

  • Bradford White M-2-50T6DS - page 18

    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. B) Rate d voltage IS present, o kay, ...

  • Bradford White M-2-50T6DS - page 19

    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. 2. Turn p ow er “ON” to w a te r heater. 3. Set mu lti-meter to “Vol ...

  • Bradford White M-2-50T6DS - page 20

    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. B) Rated v oltage is present, ok ay, go to step 8 . 8. A ...

  • Bradford White M-2-50T6DS - page 21

    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 . 2. Turn p ow er “ON” to w a te r heater. 3. Set mu lti-meter to ...

  • Bradford White M-2-50T6DS - page 22

    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. 3. Turn p ow er “ON” to wate r heater. 4. Set mu lti-meter to “Volts AC” ...

  • Bradford White M-2-50T6DS - page 23

    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 ”. 4 . Ch eck acro ss ter m in als L4 an d T2 of upper thermostat (see illus ...

  • Bradford White M-2-50T6DS - page 24

    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. (see ill us trat ion 27). A) Rated voltage N ...

  • Bradford White M-2-50T6DS - page 25

    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. 1. This procedure assumes lin e voltage , ECO and elements are in worki ng order. ...

  • Bradford White M-2-50T6DS - page 26

    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. (see ill us trat ion 32). A) Rated v ...

  • Bradford White M-2-50T6DS - page 27

    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. 2. Adjust tem perature set ting for both thermosta ts ...

  • Bradford White M-2-50T6DS - page 28

    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. 2 . Adjus t upper and low er thermos tat to the ...

  • Bradford White M-2-50T6DS - page 29

    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. 2 . Turn p ow er “ON” to w ater heate r. 3. Set mu lti-meter to “Vol ...

  • Bradford White M-2-50T6DS - page 30

    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. (see ill us trat ion 44). A) Rated vo ...

  • Bradford White M-2-50T6DS - page 31

    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 . 2. Adjust tem per ...

  • Bradford White M-2-50T6DS - page 32

    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. 1. This procedure assumes lin e voltage , ECO and elements ...

  • Bradford White M-2-50T6DS - page 33

    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. 4. Di sconnect w ires fr om thermo stat termin als. It may b e necessary t o lab ...

  • Bradford White M-2-50T6DS - page 34

    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 . Op en a n ear by h ot wat er fa ucet to vent h eater for dr ain ing. Op en d ...

  • Bradford White M-2-50T6DS - page 35

    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. O pen dr ain s pig ot of w ater he ater a nd a llow h e at er to dr ain to a po i ...

  • Bradford White M-2-50T6DS - page 36

    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. T herm osta t w/ High Li mit (8 9T33) 10. The rm os ta t Mou ...

  • Bradford White M-2-50T6DS - page 37

    NOTES 37 ...

  • Bradford White M-2-50T6DS - page 38

    NOTES 38 ...

  • Bradford White M-2-50T6DS - page 39

    NOTES 39 ...

  • Bradford White M-2-50T6DS - page 40

    Email parts@bradfordwhite.com techserv@bradfordwhite.com www .bradfordwhite.com ...

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