Reusing the original mounting nut is standard practice

Common Questions How do I know if the rollout switch is tripped

Does this unit require a specific orientation for bi-directional flow

specific springs like the R325C10-P12 must be used

Once installed

York S1-024-25994-000 Pressure Switch Reusing the original mounting nutThe York S1 024 25994 000 Pressure Switch is a critical safety component designed for precise vent pressure monitoring within York furnaces and HVAC systems. This differential air pressure switch is factory calibrated to a . 50" WC setpoint, featuring a Single Pole Normally Open (SPNO) configuration that is engineered to close on fall. This specific switching logic ensures the induced draft motor is pulling the required vacuum through the heat