McDonnell & Miller 67 Low Water Cut Off R-410A the C320KG3 ensures secure

the C320KG3 ensures secure

The integrated 30-second post-purge and inducer blower relay allow for effective venting of flue gases after the heating cycle concludes

The unit is rated for ambient temperatures down to -40°F

Industrial standards recommend mounting the unit in any position except upside down to prevent debris or oil from accumulating in the sensing element

the circuit is broken

McDonnell & Miller 67 Low Water Cut Off R-410A the C320KG3 ensures secureThe McDonnell & Miller 67 Low Water Cut Off (Part Number 149400) is a mechanical float operated control engineered for reliable steam boiler protection in residential and commercial applications. Designed for a maximum pressure of 20 PSI, this auto reset unit features quick hook up fittings for efficient installation directly into gauge glass tappings. The 3 4" NPT connection and large float chamber facilitate stable operation, while dual 120V