Lochinvar & A.O. Smith 100288429 Switch 322838-753 Key Benefits: Consistent Timing: Synchronous

Key Benefits: Consistent Timing: Synchronous motor provides a stable 30-second stroke (60 Hz) independent of load fluctuations

Most compatible hot surface ignitors should read between 40 and 60 ohms

Durable Construction: Features stainless steel bellows and a temperature-compensated time relay for accurate performance from -40°F to 140°F

As a genuine Johnson Controls component

Lochinvar & A.O. Smith 100288429 Switch 322838-753 Key Benefits: Consistent Timing: SynchronousThe Lochinvar & A. O. Smith 100288429 Switch is a critical safety component designed for precise air pressure sensing in high efficiency heating systems. This OEM replacement part is factory calibrated to a 3. 90" water column (WC) set point, serving as a primary air proving switch to ensure the blower motor is moving sufficient combustion air before the ignition sequence begins. Engineered for compatibility with specific Lochinvar boilers and A. O.