Honeywell T678A1437 Controller 323055-751 The NEMA 4X enclosure indicates

The NEMA 4X enclosure indicates the valve is protected against windblown dust

ensure the threads are clean and avoid using standard pipe dope that could interfere with the electrical conductivity required for the low water cut-off to function properly

ensuring that refrigerant does not condense into the oil during the off-cycle

If your system exceeds these limits

The LF174A series is designed to handle temperatures up to 250°F (121°C)

Honeywell T678A1437 Controller 323055-751 The NEMA 4X enclosure indicatesThe Honeywell T678A1437 is a heavy duty remote bulb controller designed for precise two stage temperature control in commercial HVACR applications. As a veteran grade mechanical thermostat, it excels in regulating temperatures within ducts, pipes, tanks, and boilers. This model features dual SPDT switch outputs that operate in sequence, making it the standard choice for staging dampers, valves, or multi stage heating and cooling equipment. With a 0