Flame detected on startup.
1. Burner may be operating too hot due to incorrect combustion. Inspect flame during operation following procedure in this manual. If flame is acceptable at both high and low fire, go to step 2. If flame is not acceptable: For propane boilers, verify propane orifice is correct and properly installed. Obtain and install propane orifice if necessary. For correct orifice propane or natural gas boilers, replace gas valve if burner glows excessively.
2. Look into the burner inspection window after the boiler shuts down. If flame is still present, gas valve may be leaking. Replace gas valve. BEFORE replacing valve, check gas line pressure coming to boiler. Pressure must not exceed 13” w.c. or valve damage could occur.
