Operating at dual speeds of 2700/2880 RPM

though it can be mounted horizontally

This automatic reset limit switch operates with a 180°F opening temperature and a 150°F closing temperature

the system only introduces outdoor air when needed

Lochinvar & A.O. Smith 100108882 Pressure Switch 318172-701 Operating at dual speeds ofThe Lochinvar 100108882 (also indexed under A. O. Smith 100108882) is a critical safety differential air pressure switch designed for commercial boilers and water heaters. Calibrated for a fixed setpoint of 1. 10" W. C., this SPNO (Single Pole Normally Open) switch ensures the combustion blower is generating sufficient airflow before allowing the ignition sequence to proceed. As an OEM replacement part, it is engineered to maintain high limit accuracy