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The IO HVAC CONTROLS SD-07 is a 7-inch round auxiliary zone damper designed for use in residential and light commercial HVAC zoning systems. It controls airflow through individual zones by opening and closing on command from a zone control board or thermostat signal. The SD-07 installs inside round ductwork and integrates with multi-zone systems to direct conditioned air where it is needed. HVAC technicians and sheet metal installers are the primary trade for this component. At 4 pounds, the unit is compact enough for tight mechanical room or attic installations.
This damper is suited for residential forced-air zoning applications where individual room or area control is required. It functions as an auxiliary damper, meaning it supplements a primary zoning setup to provide additional zone coverage. Typical install scenarios include new construction zoning retrofits and system expansions where additional zone control points are added to an existing ducted system.
Designed as an OEM-style auxiliary zone damper for use with low-voltage residential and light commercial HVAC zoning systems accepting a 7-inch round damper configuration.
Installation should be performed by a licensed HVAC technician familiar with zoning system wiring and ductwork. Power down the air handler and zone control board before making any electrical connections to the damper actuator. Verify that the duct opening is clean and properly sized to 7 inches before mounting. Follow the zone control manufacturer wiring instructions and applicable local mechanical codes during installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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