the VS series is designed for both hot/chilled water (up to 50% glycol) and low-pressure steam applications up to 15 psi

ensuring burner tube ports align perfectly with the orifices

Enhanced Safety: Primary defense against furnace overheating and airflow-related malfunctions

Common indicators include high suction superheat

maintaining the precise air-to-fuel ratio necessary for optimal thermal efficiency

Resideo MARD-12 Damper 319847-401 the VS series is designedThe Resideo MARD 12 Damper is a professional grade 12 inch round modulating damper designed for high performance HVAC zoning and bypass control. Built with heavy duty 22 gauge galvanized steel, this three wire motorized damper is engineered for longevity in both residential and light commercial mechanical systems. It features a 24Vac floating actuator that provides precise control, with a 90 second motor timing for full stroke transition from open to