IBC EX 700

7.2 Replacing the fan, gas valve, and burner in EX 400
and EX 500 models
This section documents the following maintenance procedures for EX 400 and EX 500 models:
Replacing the fan
Replacing the gas valve
Replacing the burner.
Fan
Shutoff valve
Manifold gas pressure test port
Inlet gas pressure test port
High pressure switch
Low pressure switch
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7.2 Replacing the fan, gas valve, and burner in EX 400 and EX 500 models