York S1-024-27634-001 Pressure Switch protecting the heat exchanger and

protecting the heat exchanger and residential environment from improper exhaust

which allows for 14 different flow increments plus an 'N' (fully open) setting

Always cross-reference the burner orifice stamp with the conversion kit technical data provided in the installation manual to ensure correct gas flow

System Reliability: Prevents damage to the heat exchanger by cutting the burner circuit during restricted airflow or over-temperature events

it is not intended for main air-handling or ventilation purposes

York S1-024-27634-001 Pressure Switch protecting the heat exchanger andThe York S1 024 27634 001 Pressure Switch is a critical safety component designed for precise differential pressure sensing in York, Luxaire, and Coleman gas furnaces. This SPNO (Single Pole Normally Open) switch is factory calibrated to a . 65" WC setpoint, closing on a fall in pressure to ensure the induced draft motor is maintaining adequate venting before the ignition sequence initiates. Engineered for high cycle reliability in residential heating