Ensure the bronze seats are cleaned or replaced if the check valve assembly does not seal completely

While optimized for the KH8 damper crank arm

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

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

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

Lochinvar & A.O. Smith 100208496 Control Board 30067439-890 Ensure the bronze seats areThe 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