McDonnell & Miller 193-B-7B Controller R-410A Key Benefits Broad Compatibility: Drop-in

Key Benefits Broad Compatibility: Drop-in replacement for Sensus 243

Combustion Precision: Includes calibrated brass orifices and valve springs to maintain correct BTUs after fuel type adjustment

the units are identical in specifications

it is designed to withstand high-thermal cycles while maintaining a consistent spark gap for reliable combustion

You can check parallel alignment by placing a straightedge across the outside diameter of the 4-inch flanges at several points around the perimeter

McDonnell & Miller 193-B-7B Controller R-410A Key Benefits Broad Compatibility: Drop-inThe 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