The low-fire switch is calibrated for a 0

It will automatically close the circuit once the plenum temperature drops back down to approximately 125

Its integrated diagnostic LED simplifies troubleshoot ignition module procedures by providing clear flash codes for system status

or steam leaking from the pilot exhaust area

the pressure switch will stay open

Reznor 221525 Gas Valve Els PW 17895 The low-fire switch is calibratedThe Reznor 221525 Gas Valve is a critical OEM replacement component engineered for high capacity industrial and commercial unit heaters. This White Rodgers 36H32 441 equivalent operates on a 24V AC circuit and is factory set for Natural Gas with a standard 3. 5" WC (Water Column) outlet pressure. Designed for single stage heating systems, this combination gas valve features redundant solenoid valves to ensure safe fuel regulation and consistent burner