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Manual 238-48244-00A 11/09

SERVICE

MANUAL

SUPPLEMENT

Troubleshooting Guide

and Instructions for Service

(To be performed ONLY by

qualified service providers)

Models Covered

by This Manual:

SDW2504T*F(BN,SX)

SDW265T*F(BN,SX)

SDW275S*(BN,SX)

SDW2TW50T*F(BN,SX)

SDW2TW65T*F(BN,SX)

SDW2TW75T*(BN,SX)

(*) Denotes Warranty Years

Gas Water Heaters

EcoStor2

™

Solar

SDW275S6BN shown above

Содержание SDW2504T*FBN

Страница 1: ...oting Guide and Instructions for Service To be performed ONLY by qualified service providers Models Covered by This Manual SDW2504T F BN SX SDW265T F BN SX SDW275S BN SX SDW2TW50T F BN SX SDW2TW65T F...

Страница 2: ...hermistor Wiring 5 Thermistor Wiring Test Procedure 6 ST I Gas Control Temperature Sensor 7 Temperature Sensor and Harness Testing 8 ST II Temperature Sensor Measurement 9 ST III Solar Thermal Trouble...

Страница 3: ...ifically the solar features of the water heater Please refer to the table below to determine which base model service manual is appropriate for the non solar features of the water heater EcoStor2 Sola...

Страница 4: ...iciency This is due to the potential low temperatures observed in the tank bottom where the immersed heat exchanger is located The gas backup will only heat the water when the solar thermal system is...

Страница 5: ...the solar control to determine the temperature differential between the tank and the solar collector The control can then activate a circulator to heat the tank To assist in connecting the thermistor...

Страница 6: ...is correct Step 4 If the multimeter indicates a resistance that does not match the actual temperature of the thermistor replace the thermistor Reconnect the wiring verify that the new thermistor does...

Страница 7: ...istor sensor inside a thermal well and connecting the sensor by means of a wire harness to the gas control The thermistor well sensor and wire harness connection is located under the top access cover...

Страница 8: ...isconnect the thermal sensor harness from the gas control Using a multi meter set to the Ohms setting determine the resistance of thermal sensor see caution photos at right Once the thermal sensor res...

Страница 9: ...egrees F Step 1 Set the Gas Control knob to the OFF position Step 2 Turn off inlet water supply to water heater Step 3 Draw approximately 4 gallons of water from drain valve into a container or suitab...

Страница 10: ...r2 Solar Solar Thermal Troubleshooting Chart SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION SERVICE PROCEDURE Not enough hot water 1 Gas control temperature sensor out of spec 2 Improperly sized solar colle...

Страница 11: ...ostat Bracket Assembly 11 Access Cover 12 Outer Door 13 Screw 6 20 x 3 8 PHCR 14 Nat Gas Resettable Thermal Switch 15 Nat Gas Right Side Inner Door Complete 16 Screw 8 18 x 3 4 HWH 17 Left Side Inner...

Страница 12: ...18 Brass Drain Valve 19 Wire Harness Gas Control to Resettable Thermal Switch 20 Gas Control w Service Tool 21 Gas Control Service Tool 22 Gas Control Bracket 23 Thermostat Sensor 24 Thermostat Sensor...

Страница 13: ...x Head Anode Aluminum 13 Cold Water Inlet 14 Safety Circuit Wire Harness 15 T P Relief Valve 16 Outer Door 17 Right Side Inner Door Complete 18 Screw 8 18 x 3 4 HWH 19 Left Side Inner Door Complete 20...

Страница 14: ...NOTES 14...

Страница 15: ...NOTES 15...

Страница 16: ...Email parts bradfordwhite com techserv bradfordwhite com www bradfordwhite com...

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