Io Hvac Controls LD-2018-BM Zone Damper 20x18 2 Position

Product Description

The IO HVAC CONTROLS LD-2018-BM is a rectangular two-position zone damper designed for zoned HVAC duct systems. It controls airflow by opening or closing in response to a 3-wire actuator signal, allowing individual zones to be conditioned independently. The actuator includes an LED indicator for quick visual confirmation of damper position during commissioning or service. The bottom-mount actuator configuration suits installations where access from below the duct is more practical. This damper ships at 11 pounds and fits a 20-inch by 18-inch rectangular duct opening.

This damper is installed in residential and light commercial forced-air zoning systems where a central air handler serves multiple independently controlled zones. Typical applications include new construction zoning layouts and retrofit zone-control projects where rectangular duct runs feed separate areas of a structure. Licensed HVAC technicians install this component as part of a complete zone control system alongside a zone control board and room thermostats.

Key Features

• Two-position operation opens or closes fully for straightforward zone control
• 3-wire actuator provides reliable, direct zone control board integration
• LED indicator on actuator confirms damper position without additional test tools
• Bottom-mount actuator placement simplifies access in overhead or tight duct runs
• Rectangular form factor fits standard 20-inch by 18-inch duct openings

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct systems requiring a 20-inch by 18-inch two-position damper with a 3-wire actuator interface.

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 zone control panel before connecting or disconnecting the actuator wiring. Verify the actuator wiring matches the zone control board terminal designations before restoring power. Follow local mechanical codes and manufacturer wiring diagrams when integrating the damper into an existing or new zoning system.