Description
The York S1-024-35815-000 Air Pressure Switch is a sensing part that responds to low air pressure changes by opening or closing an electrical circuit based on airflow conditions inside the system. It operates using a diaphragm that reacts to pressure differences, activating the SPDT contact arrangement when the preset 0.080-inch water column threshold is reached, enabling circuit signaling for start or stop actions in connected HVAC system patterns. Placed in air movement and combustion draft pathways, it connects to sensing lines that evaluate pressure conditions from airflow-driven sections. Its response behavior contributes to controlled activation signals, accurate airflow verification, and coordinated sequence handling.
