Bradford-White Corp ECOSTOR2 SDW2504T Service Manual Supplement

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[Page 1] Bradford White ECOSTOR2 SDW2504T

Save this manual for future reference 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) SDW26...

[Page 2] Bradford White ECOSTOR2 SDW2504T

2 The Bradford White EcoStor2™ Solar Gas Water Heaters Table of Contents Page Service Procedure How to use this manual 3 - - - Introduction 4 - - - Thermistor Wiring 5 - - - Thermistor Wiring Test Pr...

[Page 3] Bradford White ECOSTOR2 SDW2504T

3 It is intended for this manual to be used by qualified service personnel for the primary purpose of troubleshooting and repair of the Bradford White EcoStor2™ Solar with Gas Backup Water Heaters. Understanding the solar thermal sequence of op...

[Page 4] Bradford White ECOSTOR2 SDW2504T

4 The Bradford White EcoStor2 Solar Water Heater System The new Bradford White Solar with Gas Backup water heaters are designed to provide reliable performance with enhanced standard features. New design features include an internal double-wall, ...

[Page 5] Bradford White ECOSTOR2 SDW2504T

5 This section is intended to provide a better understanding of the solar thermal design application and how it varies from the base model listed on page 3. Solar Thermistor Wiring The solar with gas backup water heater comes provided with two sets...

[Page 6] Bradford White ECOSTOR2 SDW2504T

6 Thermistor Wire Testing Step 1. Disconnect and unplug the solar control. Step 2. Disconnect the thermistor twisted pair from the control or control sensor wiring. Step 3. Connect a multimeter set to read ohms to the twisted wire stripped ends...

[Page 7] Bradford White ECOSTOR2 SDW2504T

7 The solar with gas backup water heater senses temperature from the upper portion of the tank. This allows the solar thermal heating system to maximize the ability to heat the water inside the tank. Only when the upper portion of the water heate...

[Page 8] Bradford White ECOSTOR2 SDW2504T

8 EcoStor2™ Solar CAUTION DO NOT use standard multimeter probes for this test. Doing so will damage connector. Use special pin type electronic probes or small diameter wire pins inserted into connector. Disconnect thermal well wire harness I...

[Page 9] Bradford White ECOSTOR2 SDW2504T

9 DETERMINE THE WATER TEMPERATURE INSIDE THE STORAGE TANK EcoStor2™ Solar °F0123456789 40 26109 25400 24712 24045 23399 22771 22163 21573 21000 20445 50 19906 19383 18876 18383 17905 17440 16990 16553 16128 15715 60 15314 14925 14548 14180 13823...

[Page 10] Bradford White ECOSTOR2 SDW2504T

10 EcoStor2™ Solar This troubleshooting chart serves as a water heater supplement to troubleshoot specifically the solar features of the water heater. Please refer to page 3 to determine which base model service manual is appropriate for the n...

[Page 11] Bradford White ECOSTOR2 SDW2504T

11 EcoStor2™ Solar 29 Thermostat Sensor Wire Harness 30 Solar Sensor Wire Harness 31 Burner Assembly Complete 32 Burner 33 Main Burner Orifice 34 Pilot Assembly 35 Pilot Orifice 1 Draft Hood 2 Hex Head Anode Aluminum 3 Heat Trap Inser...

[Page 12] Bradford White ECOSTOR2 SDW2504T

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 Val...

[Page 13] Bradford White ECOSTOR2 SDW2504T

13 EcoStor2™ Solar Solar Thermal Parts List (TTW) 34 Inner Door Gasket Kit 35 ASSE Approved Mixing Valve (Optional) 36 Universal Integrated Mixing Device Kit (IMD) 37 Thermostat Sensor Wire Harness 38 Solar Sensor Wire Harness 1 Blower...

[Page 14] Bradford White ECOSTOR2 SDW2504T

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[Page 15] Bradford White ECOSTOR2 SDW2504T

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[Page 16] Bradford White ECOSTOR2 SDW2504T

Email [email protected] [email protected] www.bradfordwhite.com ...