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The IO HVAC CONTROLS SC-ZD-05 is a 5-inch modulating zone damper designed for commercial HVAC zoning applications. It controls airflow within a duct system by adjusting blade position across a continuous range of positions, allowing precise zone-by-zone temperature management. This unit fits inline in round ductwork and is intended for installation by licensed HVAC technicians working on commercial or light-commercial zoned systems. At 4 pounds and measuring 5 x 5 x 8 inches, the SC-ZD-05 is a compact, field-ready component suited for new construction and retrofit installations alike.
The SC-ZD-05 is used in commercial HVAC zoning systems where multiple zones require independent airflow control. Typical installations include office buildings, retail spaces, and multi-room commercial suites where a zone control panel modulates damper position in response to thermostat calls. The modulating design allows the damper to open to varying degrees rather than operating in a simple open-or-closed mode, supporting variable air volume strategies and improving overall system efficiency.
Designed as an OEM-style modulating zone damper for use in commercial HVAC zoning systems requiring a 5-inch round duct connection.
Installation should be performed by a qualified HVAC technician in accordance with applicable mechanical codes. Power down the air handler and zone control panel before wiring or mounting the damper. Ensure the duct connection is properly sealed after installation to prevent air leakage. Verify actuator signal compatibility with the zone control board before commissioning.
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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