Io Hvac Controls SD-09 Round Zone Damper 9 Inches

Product Description

The IO HVAC CONTROLS SD-09 is a 9-inch round auxiliary zone damper designed to regulate airflow in residential and light commercial HVAC zoning systems. The damper installs inline within round ductwork and is actuated by a zone control panel to open or close individual supply zones independently. This allows a zoning system to direct conditioned air only where it is needed, improving comfort and system efficiency. Licensed HVAC technicians install this component as part of a complete zoning setup, typically alongside a zone control board, thermostats, and a bypass damper.

The SD-09 is suited for residential forced-air systems and light commercial applications where 9-inch round duct is part of the trunk-and-branch or radial duct layout. It serves as an auxiliary damper, meaning it supplements the primary zone damper arrangement in larger or more complex zoning configurations. Contractors running multi-zone residential retrofits or new-construction HVAC installations will find this damper fits standard 9-inch round duct collars commonly used in supply branches.

Key Features

• 9-inch round design fits standard round duct supply branches
• Auxiliary zone damper function supports multi-zone airflow control
• Compatible with zone control panels in residential and light commercial systems
• Compact form factor at 13 x 13 x 13 inches packaged for straightforward duct installation
• 5.5-pound shipping weight reflects solid construction for reliable long-term service

Compatibility

Designed as an OEM-style auxiliary zone damper for use in 9-inch round duct zoning systems. No specific compatible control board or system family was stated in the product data; consult the IO HVAC CONTROLS zone controller documentation to confirm actuator signal compatibility before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with forced-air duct zoning systems. Power down the air handler and zone control panel before wiring the damper actuator. Ensure the damper is installed with the airflow arrow or actuator orientation aligned per the manufacturer instructions, and secure the damper to the duct collar with sheet metal screws. Low-voltage control wiring should be run and connected to the zone control board in accordance with NEC requirements and local codes.