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maintaining the precise tolerances required for the pressure switch to close consistently
such as the VA-7000 or VA-4233 series
fails to respond to humidity changes
Key Benefits for Technicians: Precision Flame Alignment: The 90-degree left-hand porting provides focused heat transfer to the sensing element for faster valve response
Lochinvar & A.O. Smith 100167824 Control Board 30067439-890 maintaining the precise tolerances requiredThe 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
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