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it provides a stable flame for consistent main burner ignition
typically caused by low gas pressure
Streamlined Installation: Features a hinged captive cover for easy access to internal circuitry and dual sensors that prevent internal leaks compared to traditional manifold setups
Capacity should be matched to the evaporator load at peak conditions
Perform a resistance test with a multimeter
McDonnell & Miller 157S-R Controller Els PW 17895 it provides a stable flameThe McDonnell & Miller 157S R (Part Number 176220) is a heavy duty, float operated combination low water cut off and pump controller designed specifically for steam boilers with an integral water column. This model serves as the upgraded direct replacement for the McDonnell & Miller 157 R, transitioning from older mercury switch technology to reliable, bimetal snap acting switches for enhanced safety and modern compliance. Built with a corrosion