Io Hvac Controls ZD-08 Modulating Zone Damper 8 in

Product Description

The IO HVAC CONTROLS ZD-08 is an 8-inch modulating zone damper designed for commercial HVAC zoning applications. It regulates airflow within a duct system by adjusting blade position across a range of positions, allowing precise zone-by-zone temperature control rather than simple open/closed switching. At 8 inches by 8 inches by 8 inches and 5 pounds, this is a compact, duct-ready unit suited for light commercial and larger residential installations. Licensed HVAC technicians and sheet metal contractors are the typical installers for this type of damper.

This damper is applied in commercial and light commercial forced-air zoning systems where variable airflow control is required across multiple zones. Modulating dampers are commonly used alongside zone control boards and variable-speed air handlers to balance system performance and maintain setpoint temperatures in individual zones. The ZD-08 fits 8-inch round or square duct configurations typical in multi-zone commercial builds and larger residential retrofits.

Key Features

• Modulating operation allows precise airflow adjustment across a full range of positions, not just fully open or fully closed
• 8-inch duct size suits common commercial and light commercial trunk and branch duct configurations
• Compact 8 inches x 8 inches x 8 inches profile supports installation in tight mechanical spaces
• 5-pound weight simplifies single-technician handling and duct mounting
• Designed for integration with commercial zone control systems requiring modulating damper inputs

Compatibility

Designed as an OEM-style modulating zone damper for commercial HVAC zoning systems requiring 8-inch damper assemblies.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with commercial zoning systems and low-voltage control wiring. Always power down the air handler and zone control board before connecting or disconnecting the damper actuator wiring. Confirm duct dimensions and damper orientation before securing to avoid airflow bypass. Follow local mechanical codes and manufacturer zone control board wiring diagrams when integrating into multi-zone systems.