Io Hvac Controls MD-2206-BM Rectangular Zone Damper

Product Description

The IO HVAC CONTROLS MD-2206-BM is a rectangular 2-position zone damper designed for forced-air zoning systems in residential and light commercial HVAC applications. Measuring 22 inches wide by 6 inches in height, this damper ships with a Belimo 3-wire actuator mounted at the bottom of the duct collar. The 2-position design opens and closes on demand from a zone control board, directing conditioned air only where it is called for. At 8 pounds, the assembly is sized for standard rectangular duct runs and is installed by licensed HVAC technicians during zoning system installations or duct modifications.

This damper is suited for rectangular duct branch runs in residential split systems and light commercial forced-air setups. The bottom-mount actuator configuration is common in horizontal duct runs where side or top access is restricted. The Belimo 3-wire actuator provides spring-return fail-safe operation, meaning the damper moves to a defined position on loss of power, which is a required feature in many zoning system designs. Installers integrating this unit into a multi-zone system connect the actuator wiring back to a compatible zone control board.

Key Features

• 22 x 6 inch rectangular duct size fits standard branch duct openings
• 2-position operation opens and closes on zone control signal
• Factory-installed Belimo 3-wire actuator eliminates field actuator selection
• Bottom-mount actuator position suits horizontal duct runs with limited overhead clearance
• Spring-return fail-safe actuator provides defined damper position on power loss

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct zoning systems using a 3-wire Belimo-style actuator interface.

Installation Notes

Installation should be performed by a licensed HVAC technician following applicable mechanical codes. Power down the air handler and zone control board before making any wiring connections to the actuator. Secure the damper to the duct collar with sheet metal screws and seal all joints with foil-backed tape or mastic per local mechanical code requirements. Do not energize the actuator until all duct connections and wiring are confirmed complete and correct.