Io Hvac Controls HD-BM-NA-3018 Zone Damper 30x18

Product Description

The IO HVAC CONTROLS HD-BM-NA-3018 is a two-position zone damper sized at 30 x 18 inches, configured for bottom-mount installation without an included actuator. It accepts a 5/8-inch or 1/2-inch shaft, allowing field selection of a compatible actuator to match the control system already in use. Zone dampers like this one regulate airflow through individual zones in a ducted HVAC system, opening or closing on a call from a zone controller or thermostat. At 15.04 pounds, this is a heavy-duty unit suited for commercial or large residential ducted systems where larger duct sizes are common. Licensed HVAC technicians and sheet metal contractors are the typical installers.

This damper is designed for ducted forced-air HVAC zoning applications where a 30 x 18 inch rectangular duct is present. The bottom-mount configuration positions the actuator mounting bracket at the bottom of the damper frame, which suits installations where overhead or side clearance is limited. Because no actuator is included, the installer selects and sources a separate two-position or modulating actuator with a 5/8-inch or 1/2-inch shaft to suit the specific zone control system in use. This unit fits both residential and light commercial ducted systems using larger trunk or branch duct runs.

Key Features

• 30 x 18 inch rectangular damper sized for larger ducted HVAC duct runs
• Two-position operation for standard open/closed zone control
• Bottom-mount bracket positions the actuator at the base of the frame
• Dual shaft compatibility accepts 5/8-inch or 1/2-inch actuator shafts
• No actuator included, allowing installer to match existing control system hardware
• Robust construction at 15.04 pounds for demanding installation environments

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular ducted forced-air HVAC zoning systems requiring a 30 x 18 inch two-position damper with a bottom-mount actuator configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down the air handler and de-energize the zone control system at the breaker before beginning installation. Ensure the selected actuator shaft size matches the 5/8-inch or 1/2-inch shaft on this damper before mounting. Secure the damper to the duct per local mechanical code requirements and verify blade operation through a full open-close cycle before restoring power.