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Key Benefits Quick-Release PopTop™ Design: Enables the actuator to be swapped in seconds without draining the system or using specialized tools
If your unit heater is short-cycling or the control board displays a limit trip code
the regulator must be installed so the vent faces downward (typically the 6 o'clock position) to prevent water
By absorbing the startup torque and steady-state oscillation of the motor
McDonnell & Miller 193 Controller 30067439-890 Key Benefits Quick-Release PopTop™ Design:The McDonnell & Miller 193 (Part Number 163400) provides heavy duty combination low water cut off and pump control for commercial and industrial steam boilers. Engineered for high pressure systems with a 150 PSI maximum pressure rating, this unit features dual snap acting SPDT switches to ensure precise differential control and reliable burner shut down. The proportional action of the float mechanism maintains tight water level tolerances, preventing
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