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the A9SE allows for integral electric shut-off
but it requires a NEMA 4X weather shield for direct outdoor exposure
Durable Circuitry: Built with industrial-grade components to withstand vibration and voltage fluctuations typical in commercial RTUs
this component provides the exact modulation needed for legacy HVAC systems
McDonnell & Miller 157S-P Controller THPU32HP7Y the A9SE allows for integralThe McDonnell & Miller 157S P Controller (Part #175802) is a precision engineered combination low water cut off and pump controller designed for commercial and industrial steam boilers of any steaming capacity. As the direct replacement for the legacy McDonnell & Miller 157S, this unit integrates a manual reset mechanism to ensure rigorous safety protocols in the event of a low water condition. Featuring a robust Monel bellows for superior corrosion