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The 1/8" NPT port acts as a vent or a breather to ensure the internal diaphragm moves freely according to atmospheric pressure
Engineering specifications dictate a precise 195°F open point to interrupt the heating cycle during abnormal combustion conditions
This HSI retrofit kit is a legacy-standard component for models manufactured prior to 2009
a NEMA 4 rated RIB would be required
The compact design allows for seamless mounting in tight control cabinets
Armstrong Furnace R44957-001 Control Freon The 1/8" NPT port actsThe Armstrong Furnace R44957 001 Control is a critical OEM replacement ignition blower control designed to manage the combustion and air circulation cycles in high efficiency heating systems. Specifically engineered for Armstrong Air and AirEase furnaces, this integrated furnace control board synchronizes the inducer motor, igniter, and blower fan to ensure safe and reliable unit operation. By precisely regulating the furnace ignition sequence, the
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