McDonnell & Miller 157S-R Controller 30067439-890 With a robust condensate capacity

With a robust condensate capacity of up to 5

maintaining stable condensing temperatures even under varying heat loads

Optimized VX100 Charge: Specifically tuned for R-407C and R-22 systems to prevent hunting at high-load conditions

using genuine Trane heating elements preserves the UL certification of the entire air handling system

25" ID component designed for high-performance application within commercial HVAC systems

McDonnell & Miller 157S-R Controller 30067439-890 With a robust condensate capacityThe 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