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60" WC (Water Column) set point
Optimizing 2-stage heating performance requires precise electronic governance
or if you see a weak orange spark instead of a strong blue one
The Apollo MVC-114
Multi-Speed Versatility: Features 3-speed taps to allow for field-adjustable airflow tuning based on the specific fan coil unit installation
McDonnell & Miller 193D Controller R-22 60" WC (Water Column) setThe McDonnell & Miller 193D is a heavy duty combination low water cut off and pump controller designed for commercial and industrial steam boilers. Engineered for high demand environments, this float operated control manages pump activation while providing critical low water protection to prevent boiler dry firing. The 193D model features alternate tappings, specifically 1" NPT connections for equalizing pipes and integrated ports for gauge glass and