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sending a 24V signal back to the control board to prove the exhaust vent is clear before ignition
the York S1-025-41020-000 features a factory-integrated 31" capillary and sensing bulb for immediate installation
It is compatible with most commercially available refrigerants
making it a reliable drop-in replacement for the E-series controls
McDonnell & Miller FPC-1000-P Control 30067439-890 sending a 24V signal backThe McDonnell & Miller FPC 1000 P Control (Xylem 144705) is a heavy duty, field configurable electronic low water cut off (LWCO) engineered for both steam and hot water boilers. As a universal replacement for the 751P MT 120, 750, and PSE 800 series, this unit offers the versatility required for residential, commercial, and industrial hydronic systems. This model includes a standard sized "P" probe and operates at either 24V or 120V, featuring a
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