sequential positioning regardless of the external load or friction

ideally in a position that allows for oil return to the compressor and easy access for future core replacements

specifically designed to match the static pressure requirements of your furnace or air handler

ensuring exact electrical specs and mounting footprint

Lochinvar & A.O. Smith 100208493 Board 318820-201 sequential positioning regardless of theThe Lochinvar & A. O. Smith 100208493 Pump Relay Board is a critical OEM replacement component designed for high demand hydronic heating applications. Rated for 1. 5 HP pump motor control, this board serves as the primary switching interface between the boiler's integrated control logic and the external circulation pumps. It is specifically engineered for compatibility with Lochinvar Knight XL KB399 800 and FTXL series boilers, as well as several A.