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55"wc SPST pressure switch is engineered to monitor the negative pressure generated by the inducer motor
Built for reliability in high-cycle environments
Normally Closed Logic: Provides a natural fail-safe position for heating or cooling loops
Common Questions: When should the A-4000-121 cartridge be replaced
What is the difference between this and a current relay
Reznor 195666 Ventor Wheel Els PW 17895 55"wc SPST pressure switch isFor service technicians handling Reznor unit heaters, the Reznor 195666 Ventor Wheel is the direct OEM replacement engineered to maintain the critical draft required for safe combustion. This 6 1 4 inch diameter venter wheel features a 1 inch bore size, ensuring a precision fit on the inducer motor shaft to eliminate the vibration and bearing wear often associated with generic alternatives. Specifically designed for use with high capacity Reznor UDAP,