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Table of Contents
Section Page
Introduction ______________________________________________5
How to Use this Manual _____________________________________6
Tools Required for Service ___________________________________6
Specifications _____________________________________________7
Sequence of Operation______________________________________9
Power Up Sequence
Normal Heating Sequence
Abnormal Operation
Troubleshooting __________________________________________ 13
Burner Maintenance _______________________________________ 15
Burner Inspection
Burner Cleaning Procedure
Pilot Maintenance _________________________________________ 17
Pilot Inspection, Testing and Replacement
Damper Replacement______________________________________ 19
Thermal Well Testing ______________________________________ 21
Determine Water Temperature Inside Tank_____________________ 22
Component Disassembly ___________________________________ 23
Gas Control Removal ______________________________________ 24
Gas Control Assembly _____________________________________ 25
Flammable Vapor Sensor Testing_____________________________ 27
120 VAC Circuit Trace _____________________________________ 27
Diptube Inspection ________________________________________ 28
Anode Inspection _________________________________________ 29
Damper Removal _________________________________________ 31
Inner Door Removal_______________________________________ 32
Inner Door Gasket Replacement _____________________________ 33
Inner Door Installation_____________________________________ 34
Arrestor Cleaning _________________________________________ 35
Damper Relay Installation __________________________________ 35
Common Terms __________________________________________ 38
Notes __________________________________________________ 38
Parts List _______________________________________________ 39
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