Lochinvar & A.O. Smith 100113144 Switch 320735-701 This is a Permanent Split

This is a Permanent Split Capacitor motor and requires a specific MFD/VAC capacitor for startup

Direct OEM Compatibility: Specifically designed to replace the Parker 208874 without the need for mounting modifications

this unit ensures superior isolation between the primary and secondary windings

a different 36C series model without the manual pilot gas cock is required

Automatic Reset Logic: Closes at 130°F to restore system functionality without manual intervention once safe temperatures are reached

Lochinvar & A.O. Smith 100113144 Switch 320735-701 This is a Permanent SplitThe Lochinvar & A. O. Smith 100113144 Blower Prover Switch is a critical safety component designed for high efficiency water heaters and commercial boilers. As a direct OEM replacement for NS2 1333 01, this pressure switch (often referred to as an air pressure switch or draft prover switch) monitors the differential pressure created by the inducer motor. By verifying stable airflow, it ensures the sequence of operation proceeds to ignition safely.