Service Manual

2
The Bradford White
DEFENDER
Safety System
®
Flammable Vapor Ignition Resistant Water Heaters
Table of Contents
Page
Service
Procedure
Introduction………………………………………………………………………… …...4 ---
Troubleshooting Charts…………………………………………………………….…...6 ---
Inner Door Gasket Removal, Inspection, and Replacement…………………
…
…..12 RG-I
Thermocouple/Thermopile Testing and Replacement………………………….…..15 RG-II
Pilot Assembly Inspection Cleaning and Replacement……………………………..18 RG-III
Piezo Igniter, Electrode Testing and Replacement……………………………..…..19 RG-IV
White Rodgers Mechanical Gas Valve Testing and Replacement……………
.
…..20 RG-V
Electronic Gas Control Testing, Disassembly, and Replacement……………
…
…..25 RG-VI
Burner Operation Inspection, Adjustment, Cleaning, and Replacement……
…
…..35 RG-VII
Resettable Thermal Switch Testing and Replacement………………………..
…
.…..37 RG-VIII
ScreenLok
®
Flame Arrestor Cleaning……………………………………………
…..39
RG-IX
Diptube and Anode Inspection and Replacement………………………………
.
…..40 RG-X
Parts Diagram……………………………………………………………………….…..42 ---
Notes………..………………………………………………………………………
…
...43 ---
…
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