Note that when used in a 3-way configuration

when mounted horizontally

concrete floors

Designed for flexible installation

ensuring a seamless drop-in fit without the need for field modifications or bracket fabrication

Lochinvar & A.O. Smith 100167824 Control Board 323055-751 Note that when used inThe Lochinvar & A. O. Smith 100167824 Control Board is a critical integrated component designed for high efficiency Knight XL heating boilers, specifically the KBN501 series. As a direct replacement for the obsolete RLY30066, this OEM control board manages essential system parameters including hot surface ignition, flame sensing, and temperature regulation. It ensures precise HVAC system timing and safety protocols by monitoring the air pressure