Lochinvar & A.O. Smith 100189283 Control R-407A this housing ensures a precise

this housing ensures a precise seal for the inducer motor and impeller wheel

and R134a for maximum inventory flexibility

Designed for R-22 refrigerant compatibility

The 3PNO (3 Pole Normally Open) configuration allows for simultaneous switching of three line-voltage legs

Lochinvar & A.O. Smith 100189283 Control R-407A this housing ensures a preciseThe Lochinvar & A. O. Smith 100189283 Control (Integrated FTX725) is a critical OEM boiler control board designed for high efficiency commercial hydronic systems. This integrated furnace control manages critical combustion sequences, including the hot surface igniter timing, blower speeds, and gas valve modulation. Engineered specifically for the Lochinvar Knight and high output A. O. Smith series, it serves as a direct replacement for legacy part