Lochinvar & A.O. Smith 100167824 Control Board 30067439-890 high-capacity safety relief valve engineered

high-capacity safety relief valve engineered for ASME Section I steam boiler applications

this TP-851 control board allows for straightforward HVAC troubleshooting by simplifying the diagnostic path for ignition failure

A failing capacitor is a primary cause of motor humming or failure to kick over under load

Using it on an NC body will lead to improper seating and mechanical failure of the plunger

Enhanced Durability: Constructed with high-grade materials for extended operational life and consistent ignition

Lochinvar & A.O. Smith 100167824 Control Board 30067439-890 high-capacity safety relief valve engineeredThe 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