Io Hvac Controls HD-2216-BM Zone Damper 22x16 2-wire Bottom Mount

Product Description

The IO HVAC CONTROLS HD-2216-BM is a rectangular two-position zone damper designed for ducted HVAC zoning systems. Sized at 22 inches by 16 inches, it uses a 2-wire actuator to open and close the damper blade, directing conditioned air to specific zones on demand. The bottom-mount actuator configuration suits installations where access from below the duct is practical. Licensed HVAC technicians install this damper as part of a zoned forced-air system, pairing it with a zone control board and thermostat to manage airflow independently across multiple areas of a building.

This damper is suited for residential and light commercial forced-air zoning applications. It fits into rectangular duct runs and is typically installed in new construction or retrofit zoning projects where a single HVAC system serves multiple independently controlled zones. The 2-wire actuator simplifies wiring back to the zone control panel, reducing installation time compared to multi-wire actuator designs. Applications include split-level homes, office suites, and any ducted system where room-by-room temperature control is required.

Key Features

• 22 inch by 16 inch rectangular duct opening for direct inline installation
• Two-position operation opens and closes fully for reliable zone control
• 2-wire actuator reduces control wiring complexity at the zone panel
• Bottom-mount actuator placement accommodates tight overhead clearances
• Compatible with standard low-voltage zone control boards common to residential and light commercial systems

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct systems requiring a 22 inch by 16 inch two-position damper with a 2-wire bottom-mount actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with zoned forced-air systems. Shut down the air handler and de-energize the control panel before wiring or mounting the damper. Secure the damper into the duct run according to the manufacturer instructions, ensuring the blade moves freely before making final low-voltage wiring connections to the zone board. Follow applicable mechanical and electrical codes for low-voltage control wiring in your jurisdiction.