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The IO HVAC CONTROLS MD-1612 is a rectangular 2-position zone damper rated for 16 inches by 12 inches duct openings and equipped with a Belimo 3-wire actuator. Zone dampers control airflow to individual zones in a zoned HVAC system, opening and closing on demand from a zone controller or thermostat. The 2-position actuator drives the blade fully open or fully closed, providing reliable on/off airflow control rather than modulating flow. At 8 pounds, the unit is sized for standard residential and light commercial duct systems where precise multi-zone comfort control is required. Licensed HVAC technicians are the typical installers for this component.
This damper is designed for installation in rectangular sheet-metal ductwork as part of a zoned forced-air system. Typical applications include residential multi-zone systems where independent room or area temperature control is needed. The MD-1612 fits 16-inch by 12-inch rectangular duct openings and is compatible with 3-wire zone control wiring schemes standard to Belimo actuator-equipped dampers. It is suited for both new-construction zoning installations and retrofit applications where an existing system is being converted to zone control.
Designed as an OEM-style zone damper for 16-inch by 12-inch rectangular duct systems using Belimo 3-wire actuator wiring. Consult your zone controller documentation to confirm 3-wire actuator compatibility before installation.
Installation should be performed by a licensed HVAC technician familiar with zoned forced-air systems. Power down the air handler and zone control panel before wiring or mounting the damper. The damper must be secured to the ductwork with sheet-metal screws and sealed appropriately to prevent air bypass. Verify actuator wiring matches the zone control board terminals before restoring power.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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