Io Hvac Controls ZD-2012 Modulating Zone Damper 20x12

Product Description

The IO HVAC CONTROLS ZD-2012 is a modulating zone damper designed for commercial HVAC applications. It regulates airflow within a duct system by continuously varying blade position rather than operating as a simple open/close unit, allowing precise zone-by-zone temperature control. At 20 inches wide by 12 inches tall with a 6-inch depth, this damper fits standard commercial rectangular duct openings of that size. It weighs 10 pounds. Licensed HVAC technicians and sheet metal contractors are the typical installers for a unit of this type.

This damper is suited for commercial zoning systems where multiple zones require independent airflow modulation. Typical applications include multi-zone rooftop unit installations, variable air volume systems, and commercial split systems with dedicated zone control panels. The modulating action supports zone controllers and thermostats that output a variable signal rather than a simple two-position command, making it appropriate for retrofit and new-construction commercial builds alike.

Key Features

• Modulating operation allows continuous blade positioning for precise airflow control
• 20-inch width by 12-inch height fits standard commercial rectangular duct openings
• 6-inch depth accommodates typical duct collar and installation clearances
• 10-pound construction suitable for permanent commercial duct installation
• Designed for multi-zone commercial HVAC systems requiring independent zone management

Compatibility

Designed as an OEM-style modulating zone damper for commercial rectangular duct systems requiring a 20-inch by 12-inch damper opening.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor in accordance with applicable mechanical codes. Shut down the air handling unit and de-energize all associated controls before beginning damper installation or wiring. Verify that the control signal type from the zone controller matches the actuator requirements of this damper before completing the low-voltage control wiring. Confirm duct dimensions and blade orientation before securing the damper in place to ensure proper airflow direction.