Io Hvac Controls MD-2424 Rectangular Zone Damper 24x24 in

Product Description

The IO HVAC CONTROLS MD-2424 is a 24 x 24 inch rectangular 2-position zone damper equipped with a Belimo 3-wire actuator. It is designed for use in forced-air zoning systems where individual zones require independent airflow control. The damper opens and closes in response to a 24-volt zone control signal, allowing a single air handler or furnace to condition multiple zones without manual intervention. At 18 pounds, it is a substantial assembly built for commercial-grade duct installations. Licensed HVAC technicians and sheet metal contractors are the typical installers.

This damper is suited for rectangular duct applications in both light commercial and residential zoning systems. A 24 x 24 inch face size accommodates high-volume supply or return trunk duct runs where significant airflow capacity is required. The integrated Belimo 3-wire actuator provides spring-return, fail-safe operation, ensuring the damper defaults to a defined position on power loss. This makes it appropriate for systems where airflow safety or equipment protection is a design requirement.

Key Features

• 24 x 24 inch rectangular face size for high-capacity duct runs
• 2-position operation: fully open or fully closed for precise zone control
• Integrated Belimo 3-wire actuator with spring-return fail-safe function
• 24-volt control signal compatible with standard zone control boards
• Robust construction at 18 pounds rated for sustained commercial-duty cycling

Compatibility

Designed as an OEM-style replacement or new-installation damper for rectangular duct zoning systems requiring a 24 x 24 inch 2-position zone damper with a Belimo 3-wire actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down the air handler and de-energize the control panel before mounting or wiring the damper. The damper must be mounted in the ductwork in strict accordance with the manufacturer orientation markings to ensure proper spring-return travel direction. Wire the actuator per the Belimo 3-wire wiring diagram and verify zone board compatibility before commissioning.