McDonnell & Miller 157S-P Controller 322838-754 Durable Shell Design: Features an

Durable Shell Design: Features an epoxy powder-coated finish for exceptional corrosion resistance in harsh outdoor environments

This typically signifies a failure to sense flame during the 15-second trial

this unit delivers the accuracy required for efficient economizer control and ambient air monitoring

The internal fusible element is designed to melt and lose structural integrity to close the valve when temperatures reach approximately 165°F

Code Compliance: Facilitates NEC Article 430-32 compliance for motor branch-circuit overcurrent protection when sized according to manufacturer charts

McDonnell & Miller 157S-P Controller 322838-754 Durable Shell Design: Features anThe 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