Description
The York S1-02439716000 Pressure Switch is a sensing unit calibrated to activate a circuit response at a 0.20-inch water column differential pressure, converting pneumatic changes into electrical switching action. It operates through a diaphragm mechanism that reacts to air pressure variation, opening or closing contacts based on setpoint calibration. Placed in furnaces, air handling units, and HVAC systems used in combustion and airflow monitoring applications, it regulates safety interlocks, draft verification, and airflow detection by responding to pressure changes within duct or venting sections, enabling controlled electrical signaling for system operation sequencing and protection logic.
