Io Hvac Controls MD-2420 Rectangular Zone Damper 24x20 in

Product Description

The IO HVAC CONTROLS MD-2420 is a rectangular 2-position zone damper sized at 24 inches by 20 inches, designed for zoned HVAC duct systems. It comes equipped with a Belimo 3-wire actuator, providing reliable open/close control for airflow management in residential and light commercial applications. The 2-position actuator drives the damper blade to fully open or fully closed, making it well suited for standard zone control panels and thermostats that use a simple 24-volt signal. Licensed HVAC technicians typically install this damper as part of a multi-zone forced-air system to direct conditioned air where it is needed.

This damper fits into rectangular ductwork at the 24-inch by 20-inch nominal duct opening. It is commonly used in new construction and retrofit zoning projects in residential and light commercial buildings. The Belimo 3-wire actuator integrates with most 24-volt zone control boards, allowing straightforward wiring to existing zoning systems. It is appropriate for both supply and return duct applications where 2-position control is sufficient.

Key Features

• Rectangular damper sized for 24-inch by 20-inch duct openings
• Belimo 3-wire actuator included for reliable 2-position control
• 24-volt actuator compatible with standard zone control boards
• Fully open and fully closed operation for straightforward zoning
• Suitable for residential and light commercial forced-air duct systems

Compatibility

Designed as an OEM-style zone damper replacement or new-install component for rectangular duct systems requiring a 24-inch by 20-inch 2-position damper with a Belimo 3-wire actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician following local mechanical codes and the zone control manufacturer wiring instructions. Shut down the air handling unit and de-energize the zone control panel before beginning installation. Secure the damper into the duct with sheet metal screws and seal seams with approved duct tape or mastic as required by local code. Do not energize the actuator until all wiring connections have been verified against the zone controller documentation.