Io Hvac Controls MD-3410-BM Rectangular Zone Damper

Product Description

The IO HVAC CONTROLS MD-3410-BM is a rectangular 2-position zone damper sized at 34 inches by 10 inches, equipped with a Belimo 3-wire actuator mounted at the bottom of the unit. Zone dampers control conditioned airflow to individual zones in a ducted HVAC system, opening and closing on demand from a zone controller or thermostat. This damper is designed for residential and light commercial zoning applications where precise airflow shutoff between zones is required. The 2-position operation means the blade travels fully open or fully closed, making it straightforward to integrate into standard zone control systems. Licensed HVAC technicians are the typical installers for this type of equipment.

This damper suits rectangular duct zoning installations in forced-air heating and cooling systems. The 34-inch by 10-inch duct opening size makes it appropriate for larger branch or trunk duct runs in residential or light commercial buildings. The bottom-mount Belimo 3-wire actuator configuration is common in zone control setups where low-voltage wiring runs from a zone board to the actuator, providing both power-open and power-close control signals. Install location is typically in accessible attic, basement, or mechanical room ductwork where service access is available.

Key Features

• 34 inches by 10 inches rectangular duct opening for larger duct branch or trunk runs
• 2-position operation - fully open or fully closed blade travel for reliable zone isolation
• Belimo 3-wire actuator included for power-open and power-close low-voltage control
• Bottom-mount actuator configuration for installations requiring underside access clearance
• Designed for integration with standard residential and light commercial zone control boards

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct zoning systems using Belimo 3-wire actuator wiring configurations in residential and light commercial forced-air HVAC applications.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with duct zoning systems and low-voltage wiring. Shut down the air handler or furnace and de-energize all low-voltage zone control circuits before installing or wiring the actuator. Secure the damper body to the duct with sheet metal screws and ensure the blade operates freely before making final low-voltage connections to the zone board. Refer to the zone control system manufacturer wiring diagram to confirm proper 3-wire actuator terminal assignments.