This SPST (Single Pole Single Throw) controller is specifically designed for unit heaters

Versatile Mounting: Part of the pneumodular system

Its all-cast aluminum NEMA 4 enclosure houses a 17-4 PH stainless steel piezoresistive sensor

This 1/4 HP 1075 RPM motor features a reversible rotation and a 48-frame diameter

The most common symptom is short cycling

Lochinvar & A.O. Smith 100166238 Switch 318820-201 This SPST (Single Pole SingleThe Lochinvar & A. O. Smith 100166238 Gas Pressure Switch is a critical safety component designed for high performance gas fired boilers and commercial water heaters. Featuring a 1 20" WC adjustable range, this manual reset gas pressure switch ensures system integrity by monitoring incoming or manifold gas pressure. If pressures deviate from the calibrated setpoint, the switch initiates a safety lockout, preventing hazardous combustion conditions.