McDonnell & Miller 193 Controller 30067439-890 Field Serviceability: Designed for standard

Field Serviceability: Designed for standard pneumatic maintenance protocols

Common Questions How do I adjust the setpoint on the Antunes JD-2-GREY

If your unit heater is short-cycling or the control board displays a limit trip code

The Modine 3H0372660001 is a high-precision Natural to LP Conversion Kit designed for the field conversion of specific low-profile gas-fired unit heaters

the regulator must be installed so the vent faces downward (typically the 6 o'clock position) to prevent water

McDonnell & Miller 193 Controller 30067439-890 Field Serviceability: Designed for standardThe 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