the SEN1159 is versatile enough for both ambient outdoor air sensing and return/discharge air temperature monitoring in compatible Trane-certified air handling systems

Drop-in Compatibility: Standardized 24V wiring connections facilitate rapid replacement in Trane HVAC units

Precise Shaft Locking: Features dual set screw locking for a secure mechanical bond on 1" cold-rolled or ground shafts

Smith 100075279 Burner Tube is a high-performance main burner assembly engineered for specific commercial water heater and boiler parts applications

Veteran HVACR technicians prioritize the AFA series for its external superheat adjustment

Lochinvar & A.O. Smith 100208496 Control Board 30067439-890 the SEN1159 is versatile enoughThe Lochinvar & A. O. Smith 100208496 Control Board is a critical OEM replacement part designed to maintain the operational integrity of high efficiency commercial boilers and water heaters. As the direct replacement for RLY2107, this relay control board manages executive switching functions, including the 24VAC signal distribution to the ignition module and pressure switch systems. This board is essential for coordinating the two speed blower motor