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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 _______________________________________ 17
Burner Inspection
Burner Cleaning Procedure
Pilot Maintenance _________________________________________ 19
Pilot Inspection, Testing and Replacement
Thermal Well Testing ______________________________________ 21
Determine Water Temperature Inside Tank_____________________ 22
Component Disassembly ___________________________________ 24
Gas Control Removal ______________________________________ 25
Gas Control Assembly _____________________________________ 26
Flammable Vapor Sensor Testing_____________________________ 27
120 VAC Circuit Trace _____________________________________ 28
Relay Replacement________________________________________ 28
Common Terms __________________________________________ 30
Notes __________________________________________________ 30
Parts List _______________________________________________ 31
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