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The IO HVAC CONTROLS HD-3024 is a rectangular two-position zone damper designed for ducted HVAC zoning systems. It controls airflow in a single duct zone by fully opening or fully closing on a two-wire actuator signal, making it a straightforward solution for residential and light commercial zoning applications. The damper measures 30 x 24 inches at the duct opening and weighs 16 pounds. It is sized for large rectangular duct runs where precise zone control is needed. HVAC technicians install this damper as part of a multi-zone system managed by a zone control board or thermostat controller.
This damper is suited for residential and light commercial forced-air systems where rectangular duct configurations are used. The two-position, two-wire design keeps wiring simple and compatible with standard zone control panels. It is typically installed in supply duct branches serving individual zones such as separate floors, wings, or rooms. The large 30 x 24 inch face size makes it appropriate for high-volume air distribution trunks or primary branch ducts in larger systems.
Designed as an OEM-style replacement or new-installation zone damper for rectangular ducted forced-air HVAC zoning systems using two-wire, two-position actuator controls.
Installation should be performed by a licensed HVAC technician. Power down the air handler and zone control panel before connecting or disconnecting actuator wiring. The damper must be mounted in the duct with airflow direction aligned to the manufacturer's arrow markings, and all duct connections should be sealed per local mechanical code requirements. Verify actuator voltage requirements match the zone control panel output before energizing the system.
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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