Description
The York S1-02425994000 Single Pull Pressure Switch 0.50″ WC Normally Open Closes on Fall monitors airflow pressure changes within heating and ventilation equipment during active operation. The switch responds to negative pressure variation and closes the electrical circuit when pressure falls to the specified setting for coordinated equipment sequencing and safety verification. The pressure switch connects to airflow tubing and electrical terminals for pressure monitoring and operational interaction. Configuration contributes to accurate airflow detection, reduced operating interruption, stable circuit response, and continuous heating equipment performance during system cycles in HVAC systems such as furnaces, air handlers, and induced draft assemblies.
