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The Lennox 52M46 Control Board
4 compliance for cross-connection control
utilizing an integrated control module to translate system demands into specific torque and speed adjustments
Quiet Operation: Soft-start and variable speed transitions minimize the audible "thump" associated with system cycling
It explicitly requires a 1/4 inch motor shaft for installation
Lochinvar & A.O. Smith 100144992 Fan Assembly 320720-756 The Lennox 52M46 Control BoardThe Lochinvar & A. O. Smith 100144992 Fan Assembly is a critical OEM replacement part designed for high efficiency commercial boilers and water heaters. This 115V blower motor assembly manages precise combustion air delivery, featuring a 1 2 HP motor balanced for high static pressure applications. Operating at a fixed 1650 RPM, it ensures stable manifold pressure and optimal heat exchanger performance. This unit is the direct manufacturer mandated
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