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Common symptoms include a furnace that cycles but fails to light
High Cooling Capacity: Rated at 58
Robust Environmental Protection: Features potted circuitry and a durable housing to withstand high-moisture air streams and temperature fluctuations
ensuring linear stem travel and reducing side-loading on the valve packing
Durable construction minimizes moisture-related signal failures in high-vibration commercial HVAC environments
McDonnell & Miller 193-B-7B Controller Els PW 29614 Common symptoms include a furnaceThe McDonnell & Miller 193 B 7B (Part Number 164700) is a heavy duty combination low water cut off and pump controller specifically engineered for commercial and industrial steam boiler applications. Designed to handle a maximum pressure of 150 PSI, this unit features a No. 7B proportional control switch that provides a 135 ohm potentiometer signal. This allows for precise, continuous modulation of the feed water flow rather than simple on off