McDonnell & Miller 94-M-HD Controller R-22 Reliable Performance: Ensures the combustion

Reliable Performance: Ensures the combustion blower maintains correct CFM output for safety compliance

This structural assembly is critical for maintaining stable combustion and consistent discharge air temperatures in makeup air units and process heaters

ensuring the T&P valve can be properly threaded and the discharge pipe remains accessible for maintenance

reducing the need for site visits after local grid failures

check the high-voltage cable for cracks

McDonnell & Miller 94-M-HD Controller R-22 Reliable Performance: Ensures the combustionReplace your compromised boiler controls with the McDonnell & Miller 94 M HD Controller (Part Number 166000). This heavy duty head mechanism replacement is engineered for steam boiler water level control in high pressure commercial and industrial environments. It functions as a combination low water cut off and pump controller, utilizing a magnetic repulsion system that eliminates the common failure points found in bellows operated units. Designed for