Benutzeranleitung / Produktwartung M-2-50T6DS des Produzenten Bradford-White Corp
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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 ten ts Page Serv ic e Proced ure Introduction …………………………………………… …………………………. 2 Tools………………………………………….
GENERAL INFORMATION 120 VOLT Ungro unded Grounded (Neutra l ) Grou nding BLACK WHI TE GRE EN 120 0 120 240 VOL T Ungroun ded Ungr ou nd ed Gr ounding BLACK RE D GRE EN 240 120 120 120 ABC N eutral RED.
GENERAL INFORMATION Watt age Limitat ions at Vari ous Voltage s Resid ential E lectric Upright M1 & M2 Series ( Non-Sim ultan eous opera tion) M ax im um Wat ta ge E lement Uppe r/Lo wer Volta g e.
GENERAL INFORMATION Surf ace M oun t Com binat ion Ther most at/ 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 ERATIO N R esiden tial and l ight duty commercial electric w at er heat ers a r e des igned to o perate usin g several different o perating m odes . The common m odes and seq uence of o perati on are as follows : 1 . Singl e Element O peration.
Non-Simul taneous and Simul taneous O peration Doub le element el ectric water heater s are de signed to operate in a Non-Simultan eous or Sim ultaneous mod e. Non-Simulta neous Mode: All ows only on e heating element to operate at a time. For exam ple, when the tank is cold, the upp er element is energi zed first, heating th e top of the tank .
SEQU ENCE OF OP ERATIO N Sequence o f Operatio n- Double E leme n t, Simultaneous Ope ration, Single Phase, 4 wire service installation. A 4 wire, dou ble elem ent heater w ired for simult aneous o perati on is es sentiall y two singl e elemen t systems o perating i ndepe ndently.
SEQU ENCE OF OP ERATIO N Sequence o f Operatio n- Double Element, Non-Simultaneous Operation, 3 Phase. Line v oltage is appl ied acros s terminals L 1 & L3 of up per thermos tat. Likewise, Li ne voltag e is appl ied to terminal L3 of low er thermos tat.
SEQU ENCE OF OP ERATIO N Line vol tage is a pplied ac ross term inals L1 & L3 of uppe r thermostat . Line vol tage als o extends t o term inal L1 of low er thermostat.
SEQU ENCE OF OP ERATIO N Sequence o f Operatio n- Dou ble Eleme n t, Non-Simu ltaneous Operatio n, Single P hase, Off Peak. Some el ectric uti lity compan ies will o ffer disco unts for using electrici ty during “ Off Peak” Ti mes of the day .
TROUBLESHOOTING Most common ca use for improper el ectric water heate r op eration can be linked to heating el ement failure. When trou bleshooti ng an electric w ater heater with the incidenc e of .
SYM PTOM PR OBA BLE CA US E COR RECTIVE ACTI ON No Hot Water 1 . No Po we r to hea ter. 2 . Lo ose wire c onne cti ons. 3 . Inope rativ e uppe r heat ing el ement . 4 . Inope rativ e uppe r the rmost at. 5. O pen ECO. 1. In opera tive lo wer he ati ng elem ent.
SERVICE PROCEDU RE RE- I Line Voltage & High Limit (ECO) Testin g WARNING High vo ltage exposure. Use cau tion when making voltag e checks to avoid personal 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 T O W ATER HEAT ER. Step 2. Remove acc e ss cover(s) from front of w a ter heater . Remove insulation an d plasti c cover f rom the rmostat. Step 3. Dis connect w i res from hea ting element.
SERVICE PROCEDURE RE -III Residential Thermostat Testing WARNING High voltage exp osure. Use cau t ion t o av oid per so nal inj ury du rin g t his pr oce dur e. Ill us tra ti on 6 Singl e Element Operation or Double Element, 4 Wire, Simultan eous, Sin gle Phase Operation.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Non-Simultaneous, Single Phase Operation. Water In Tank Is Cold With Pow er O N . 1. This procedure assumes lin e voltage, E CO and elements are in worki ng ord er.
Doubl e Ele ment, N on - Sim ultaneous, 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 e r thermosta t (see ill ustration 11). A) Rate d voltage N O T present, - check wire connec tion between thermosta ts.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation. Water In Tank Is Cold With Pow er O N . 1 . This procedure assumes lin e voltage, EC O an d elements are in worki ng ord er.
Double Element, Non-Simultaneous, Three Phase Operation ( c ontinued). Tank D oes Not Deliver En ough Hot Water (contin ued) 7. Ch eck voltage across te rminal L1 & L3 of lower thermos tat (see il lustration 16) . A) Rated voltage N O T present, check wire connecti on between th ermostats.
Double Element, Simultaneous, Three Phas e Operation. Water In Tank Is Cold Or Not Enough Hot Water With Pow e r ON. 1. This pr ocedur e ass umes lin e voltage , ECO and ele m ents are in w orking 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 A b ove Thermostat Setting. 1. This procedure assumes Lin e voltage , ECO and elements are in worki ng 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 Cold With Pow er ON. 1. This pr ocedur e ass umes lin e voltage , ECO and ele m ents are in w orking order . 2 . Turn p ow e r “O N” to w a te r heater. 3. Set mu lti-meter to “Volts AC ”.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Non-Simultaneous, Single Phase, O ff Peak Opera tion. (continued) N ot Enough H ot Water (continued). 7. Check voltage across te rminal T4 o f upper thermosta t & T2 of lower The rmo s tat.
SERVICE PROCEDU RE RE -IV Light Duty C o m m ercial The rmos tat Testing WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. D ouble Element, Non-Simultaneous, Single Phase O peration. W ater In Tank Is Cold With Pow er ON.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring 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 te rminal L3 of up per thermosta t & T2 of lower The rmostat.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Simultaneous, Single Pha se Operation. Water In Tank Is Cold Or Not Enough Hot Water With Pow e r ON. 1. This pr ocedur e ass umes lin e voltage , ECO and ele m ents are in w orking order .
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Simultaneous, Single Pha se Operation (c ontinued) Water Temperature In Tank Is A b ove Thermostat Setting. 1. This procedure assumes lin e voltage, E CO and elements are in worki ng ord er.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation. W ater In Tank Is Cold With Pow er ON. 1. This procedure assumes lin e voltage, E CO and elements are in worki ng ord er.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Non-Simultaneous, Three Phase Operation ( c ontinued). Tank D oes Not Deliver En ough Hot Water (continued). 7. Ch eck voltage across te rminal L1 of up per thermosta t & T2 of lower The rmostat.
WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Illu stration 47 Illu stration 48 Double Element, Simultaneous, Three Phas e Operation. Water In Tank Is Cold Or Not Enough Hot Water With Pow e r ON. 1. This pr ocedur e ass umes lin e voltage , ECO and elem ents are i n worki ng order .
S ERVICE PROCEDU RE RE -IV Light Duty C o m m ercial The rmos tat Testing WARNING High voltage exp osure. Use cautio n t o avoid pers onal injury du ring this proced ure. Double Element, Simultaneous, Three Phas e Operation (c ontinued). Water Temperature In Tank Is A b ove Thermostat Setting.
SERVICE PROCEDURE RE -V Ther mostat Removal an d Rep lacement Fr ont View Th ermos tat Moun ting The r m ostat Re moval 1. Turn p ow e r “OFF” To water he ater. 2 . Re m ov e access c over a nd insul ation. 3. Re m ov e plasti c the rmostat protecto r from th ermo s tat.
SERVICE PROCEDU RE RE -VI Heating Element Removal and Repla cement Heating Elem en t Removal 1. Turn p ow e r “OFF” To water he ater. 2 . T urn off col d wate r supp ly to heat er. Con nec t hose to d rain spi got of w at er hea ter an d rout e to an o pen d rai n.
Page 35 S tep 1. Turn p ower “OF F” to wat er hea ter. Step 2 . T urn of f cold wate r suppl y t o heat er. Con nect hos e to dra in spigo t of wat er hea ter and ro ute to an o pen dr ain. Op en a near by hot wat er fau cet to ven t heat er for dra ining .
Page 36 Ge neric Part s List 1. T&P Relie f V alve 2. He at Tr ap I nsert (Out let ) 3. Hot Wa ter O utl et/ Anod e 4. Cover C ond uit /Grou nd 5. Junc tion B ox C over 6. Heat T rap In sert ( Inl et) 7. Cold Wate r I nlet Dip Tube 8. Ther most at Prot ecto r (La rge ) 9.
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