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Technicians should test for continuity across the terminals when the switch is cool
making it ideal for standard low-pressure steam heating applications
Each unit undergoes rigorous factory testing to verify electrical integrity and mechanical performance
and steam systems using standard globe valve bodies
verifying the integrity of the 1176919 is a standard diagnostic step for maintaining HVAC system efficiency and safety
McDonnell & Miller 64-A Low Water Cut Off Freon Technicians should test for continuityThe McDonnell & Miller 64 A (Part Number 143700) is a heavy duty, mechanical low water cut off engineered specifically for residential or commercial hot water and steam boilers. Designed with 1" NPT quick hook up fittings, this unit simplifies installation into gauge glass tappings, facilitating proper water level monitoring without extensive repiping. Built to handle a 50 PSI maximum boiler pressure, the 64 A utilizes an automatic reset mechanism to