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this power assembly ensures precise superheat control across a wide operating range from -10°F to 60°F
it is highly recommended to use the manufacturer-specified start capacitor and relay to ensure reliable starting under high head pressure or low voltage conditions
slip-free performance
it is compatible with an optional OS-100 kit if a physical outdoor reset is preferred
utilizing a balanced port construction to prevent hunting and ensure stable evaporator performance
Lochinvar & A.O. Smith 100208493 Board 320734-701 this power assembly ensures preciseThe Lochinvar & A. O. Smith 100208493 Pump Relay Board is a critical OEM replacement component designed for high demand hydronic heating applications. Rated for 1. 5 HP pump motor control, this board serves as the primary switching interface between the boiler's integrated control logic and the external circulation pumps. It is specifically engineered for compatibility with Lochinvar Knight XL KB399 800 and FTXL series boilers, as well as several A.
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