Io Hvac Controls CD-2018-BM Rectangular Zone Damper 20x18

Product Description

The IO HVAC CONTROLS CD-2018-BM is a rectangular zone damper designed for ducted zoning systems in residential and light commercial HVAC applications. It ships with a Belimo 3-wire actuator mounted on the bottom of the damper body, providing reliable open/close control in variable-air-volume and zone-control setups. The damper fits a 20-inch by 18-inch duct opening and is built as a direct replacement for compatible Carrier and Bryant zoning systems. At 12 pounds, the assembly is sturdy enough for long-term duct installation without excessive handling difficulty.

This damper is intended for use in multi-zone forced-air systems where individual areas or rooms require independent temperature control. The bottom-mount actuator configuration suits installations where overhead clearance is limited or where the control wiring routes from below the duct. Carrier and Bryant zoning system installations are the primary application, making this unit well suited for HVAC contractors servicing or upgrading those platforms. It is appropriate for both new duct system builds and retrofit zone-control projects.

Key Features

• Fits 20-inch by 18-inch rectangular duct openings
• Belimo 3-wire actuator included, mounted on the bottom of the damper body
• Direct replacement design for Carrier and Bryant zoning systems
• Bottom-mount actuator orientation for installations with limited top clearance
• Assembled unit weight of 12 pounds for solid, stable duct mounting

Compatibility

Designed as a direct replacement zone damper for Carrier and Bryant rectangular duct zoning systems requiring a 20-inch by 18-inch damper with a bottom-mount Belimo 3-wire actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with zoned duct systems and low-voltage control wiring. Power down the air handler and de-energize the zone control board before connecting or disconnecting actuator wiring. Secure the damper to the duct with sheet metal screws and seal all joints per local mechanical code requirements. Verify actuator travel and end-switch function after installation before restoring system power.