Description
The Lochinvar & A.O. Smith 100289391 Pressure Switch is an essential safety control component used in boilers and water heating systems to monitor internal pressure conditions during operation. It is designed to detect whether airflow or water-side pressure meets the required operating threshold and sends a signal to the control board to allow or stop system operations. Commonly installed in heating equipment, it supports ensuring proper ignition sequencing and avoid operation under unsafe or inefficient pressure conditions. Within the system, it controls as a protective interlock component that supports accurate combustion control and stable boiler performance in commercial heating applications.
