Bradford White U-TW4-75S-76R-3N - Manual (Page 2)

Bradford White
U2TW Series
Gas Water Heaters
Table of Contents
Page U2TW Service Procedure
Introduction 4 - - -
How to Use This Manual 5 - - -
Tool Required for Service 5 - - -
Specifications 6 - - -
Control Timings 8 - - -
Sequence of Operation 9 - - -
Troubleshooting 12 - - -
Burner and Inner Door/Gasket Removal, Inspection
Replacement and Reinstallation 14 I
Burner Operation Inspection, Cleaning and Replacement 17 II
Pilot Testing, Cleaning and Replacement 19 III
Pressure Switch Testing and Replacement 20 IV
Blower Testing and Replacement 22 V
Blower Temperature Switch Testing and Replacement 24 VI
Gas Control Testing and Replacement 26 VII
Simulated Resistive Device Testing and Replacement 28 VIII
Resettable Thermal Switch Testing and Replacement 29 IX
Safety Circuit Voltage Trace 31 X
115VAC Circuit Trace 32 XI
Dip Tube Inspection and Replacement 33 XII
Anode Inspection and Replacement 34 XIII
Flue Baffle Inspection and Replacement 35 XIV
Glossary of Terms 36 - - -
Parts List 39 - - -
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