Lochinvar & A.O. Smith 100304140 Control Board R-22 Field technicians value this unit

Field technicians value this unit for its standardized suction and discharge port locations

This kit is a standard solution for 208-230V applications

Smith communication protocols

ensuring the heat exchanger is protected against overheating conditions caused by airflow obstructions or blower failure

Lochinvar & A.O. Smith 100304140 Control Board R-22 Field technicians value this unitThe Lochinvar & A. O. Smith 100304140 Control Board is a critical main control board designed for high efficiency Knight Fire Tube boilers, specifically the WHB285 and KHB285 models. As a central component of the SMART SYSTEM operating control, this board manages complex hydronic functions, including 10: 1 turndown ratio modulation, blower speeds, and gas valve timing. It effectively processes real time data from water temperature sensors and flame