System Protection: Acts as a primary safety interlock to prevent the heater from operating under low-flow or no-flow conditions

The strip heat and reversing valve outputs are rated for up to 1 amp at 24VAC

as newer OEM HVAC control boards may feature updated footprints to accommodate advanced circuitry

What are the wiring requirements for the 049751102

McDonnell & Miller 150S-M-HD Controller Refrigerant System Protection: Acts as aThe McDonnell & Miller 150S M HD Controller (Part Number 173203) is a heavy duty, replacement head mechanism designed for industrial and commercial steam boiler applications. This combination low water cut off and pump controller features a snap acting manual reset switch, providing essential safety redundancy by preventing the burner from firing if a low water condition occurs. Engineered for durability, the unit utilizes a corrosion resistant Monel