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it utilizes a highly sensitive "N" type indicator
as well as the OPD210D overpressure protection device
The hub is machined for a 1/2-inch bore
the high limit circuit is likely open
Nordyne 632432R Pressure Switch it utilizes a highly sensitiveThe Nordyne 632432R Pressure Switch is an essential safety component engineered for negative pressure detection in specialized HVAC systems. This genuine OEM furnace part is calibrated to close at a setpoint of 0. 70" WC (Water Column), ensuring the draft inducer blower is generating sufficient vacuum before the ignition sequence begins. Designed as a normally open SPST switch, it acts as a critical interlock to prevent combustion if venting is
