McDonnell & Miller 194-B Controller R-22 engineered to open the electrical

engineered to open the electrical circuit at 180°F and automatically reset when the temperature drops to 140°F

The red LED is a status indicator that illuminates when the relay coil is energized

Critical Safety Function: Maintains the necessary draft to move combustion gases through the venting system

Common Questions: What is the correct rotation for the 1868E actuator

which often indicates low voltage or mechanical obstruction

McDonnell & Miller 194-B Controller R-22 engineered to open the electricalThe McDonnell & Miller 194 B is a heavy duty combination low water cut off and pump controller designed for high pressure steam boilers. Engineered for demanding industrial and commercial applications, this unit features a water column body with alternate tappings to facilitate precise integration with gauge glass and tri cock installations. The 166701 controller utilizes a rugged magnetic repulsion mechanism, effectively eliminating the need for