McDonnell & Miller 193-A Controller 30067439-890 this OEM component ensures seamless

this OEM component ensures seamless HVACR system compatibility when interfacing between thermostat controllers and high-load mechanical parts

and compressor contactor pilot circuits

it is recommended to install the valve with the coil in a vertical-upright position

or data logger that accepts a 4-20mA current loop signal

an upright orientation is preferred

McDonnell & Miller 193-A Controller 30067439-890 this OEM component ensures seamlessThe McDonnell & Miller 193 A is a heavy duty combination low water cut off and pump controller engineered for commercial steam boiler applications. Designed for boilers with a maximum pressure of 150 PSI, this unit features dual snap acting SPDT switches for precise burner control and pump activation. The 193 A model utilizes alternate tappings to simplify installation on various boiler configurations. Its rugged float operated mechanism ensures