McDonnell & Miller 67-LQHU Low Water Cut Off Els PW 29614 As a Normally Open (N/O)

As a Normally Open (N/O) pressure switch

00" WC fixed switch to match the exact static pressure requirements of the original heat exchanger design

secure mount directly to the exterior of an electrical box

ensuring precise air delivery and thermal management in gas/electric packaged units and furnaces

McDonnell & Miller 67-LQHU Low Water Cut Off Els PW 29614 As a Normally Open (N/O)The McDonnell & Miller 67 LQHU (Part Number 149500) is a field proven mechanical low water cut off engineered specifically for residential and commercial steam boiler applications. Operating as a float type safety control, this unit is designed to interrupt the electrical circuit to the burner if water levels drop below the safe operating line, preventing catastrophic dry fire conditions. The 67 LQHU model is identical to the 149500 and features a 3