2
The Bradford White
2
UPV Series
Through-The-Wall Gas Water Heaters
Table of Contents
Page
PV Service Procedure
Introduction ................................................................................................................................ 4
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How to Use This Manual .......................................................................................................... 5
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Tools Required for Service ....................................................................................................... 5
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Specifications ............................................................................................................................. 6
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Control Timings ......................................................................................................................... 9
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Sequence of Operation .............................................................................................................. 10
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Troubleshooting ......................................................................................................................... 14
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Burner Inspection, Cleaning & Replacement ......................................................................... 16
I
Pilot Testing, Cleaning & Replacement .................................................................................. 18
II
Pressure Switch Testing & Replacement ................................................................................ 19
III
Blower Testing & Replacement ............................................................................................... 21 IV
Blower Temperature Switch Testing & Replacement ........................................................... 23
V
Gas Control Testing & Replacement ....................................................................................... 25
VI
Flammable Vapor Device Testing and Replacement ............................................................. 28
VII
Safety Circuit Voltage Trace .................................................................................................... 29
VIII
115 VAC Circuit Trace ............................................................................................................. 30
IX
Diptube Inspection & Replacement ......................................................................................... 31
X
Anode Inspection & Replacement ........................................................................................... 32
XI
Flue Baffle Inspection & Replacement .................................................................................... 33
XII
Inner Door Removal, Inspection & Replacement .................................................................. 34
XIII
Resettable Thermal Switch, Inspection & Replacement ........................................................ 37
XIV
ScreenLok
®
Flame Arrestor Cleaning ..................................................................................... 39
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Glossary of Terms ..................................................................................................................... 40
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Parts List ..................................................................................................................................... 41
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