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The IO HVAC CONTROLS RM-14 is a 14-inch round zone damper designed for residential and light commercial HVAC zoning systems. It ships with a 35-second Belimo actuator wired in a 3-wire configuration, allowing the damper blade to open and close in response to zone controller signals. The assembly is installed directly into round ductwork to regulate conditioned airflow to individual zones, giving the system the ability to direct heating or cooling only where it is called for. Licensed HVAC technicians install this damper as part of a multi-zone forced-air system.
The RM-14 is suited for 14-inch round duct installations in residential zoning applications and light commercial forced-air systems. It is typically positioned in the main supply trunk or a large branch run where airflow to a major zone must be controlled. The 3-wire Belimo actuator provides proportional or on/off control depending on the zone controller in use. Systems requiring balanced airflow across multiple zones benefit from this damper size in high-volume duct runs.
Designed as an OEM-style replacement or new-installation zone damper for 14-inch round duct systems using a 3-wire zone controller and Belimo-compatible actuator wiring.
Installation should be performed by a licensed HVAC technician. Power down the air handler and zone control panel before wiring or mounting the damper. Secure the damper body to the duct using sheet metal screws and seal all joints with approved foil tape or mastic to prevent air bypass. Verify actuator wiring against the zone controller wiring diagram 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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