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12

EcoStor2™ Solar  

1

Draft Diverter 

2

Hex Head Anode (Aluminum) 

3

Heat Trap Insert 

4

Hot Water Outlet Anode (Aluminum)

5

Cold Water Inlet Polysulfone (NC Code) 

6

Flue Baffle  

7

Junction Box Cover 

8

Conduit Cover/Ground 

9

T&P Relief Valve 

10  Thermostat Bracket Assembly 
11 Access 

Cover 

12

Screw-#8-18 X 3/4 HWH 

13

Screw-#10-12 X 3/4 HWH 

14  Right Side Inner Door Complete 
15

Screw-#6-20 X 3/8 PHCR 

16 RTD 

Sensor 

17 Outer 

Door 

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 Well 

25  Inner Door Gasket Kit 
26  ASSE Approved Mixing Valve (Optional) 
27  Universal Integrated Mixing Device Kit (IMD) 

28

Burner Assembly 

29 Manifold 

Mount

30 Orifice 
31  Flexible Gas Feedline 
32  Resettable Thermal Switch
33 Burner 
34  Pilot Assembly Kit
35  Screw-#8-18 X 1/2 TEK 

36 Pilot 

Orifice 

37 Thermopile 

Kit

38  Thermostat Sensor Wire Harness 
39  Solar Sensor Wire Harness 

Solar Thermal Parts List 

(Ultra Low NOx) 

12

Summary of Contents for SDW2504T*FBN

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 14: ...NOTES 14...

Page 15: ...NOTES 15...

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

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