ZoneFirst SPRD-14 Damper 322057-301 the lever allows technicians to

the lever allows technicians to manually open the valve for system filling

Technicians typically encounter an "ECM No-Start" condition

though heavy use or high-pollen environments may require more frequent changes

moisture-resistant electrical interface that prevents terminal corrosion and accidental disconnection in high-vibration environments

ZoneFirst SPRD-14 Damper 322057-301 the lever allows technicians toThe ZoneFirst SPRD 14 Damper is a 14 inch round barometric static pressure regulating damper designed for high performance HVAC zoning. In a multi zone system, as individual zone dampers close, duct static pressure naturally increases. This barometric relief damper utilizes a single blade, counter balanced weighted arm to automatically compensate for this excess pressure, preventing coil freeze ups and high limit trips. Specifically engineered for