and Janitrol gas furnaces and packaged units

the switch opens the safety circuit

ensuring high-sensitivity resistance changes of 2

Enhanced Safety: Built as a Class II energy-limiting device

Nordyne 632451R Pressure Switch and Janitrol gas furnaces andThe Nordyne 632451R Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency gas furnaces. Set at . 90" WC, this Single Pole Single Throw (SPST) switch ensures the inducer motor is moving sufficient combustion air before the ignition sequence initiates. Engineered specifically for M3 furnace series and compatible with brands like Intertherm, Miller, and Frigidaire, this furnace air pressure switch