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Velocity Boiler Works (Crown) 105591-01 LWCO 322027-701 Its versatile design makes itWhen you are responding to a "no heat" call on a high efficiency condensing unit, a faulty Low Water Cut Off (LWCO) is often the silent culprit behind a hard lockout. The Velocity Boiler Works (Crown) 105591 01 LWCO is the direct OEM replacement engineered for the Phantom 80 180 and the full Raptor series. This 24 VAC safety device utilizes advanced PHNTM technology, integrating multi level sensing to provide precise water level monitoring without the