Io Hvac Controls LD-1816-BM Rectangular Zone Damper

Product Description

The IO HVAC CONTROLS LD-1816-BM is a rectangular two-position zone damper designed for residential and light commercial HVAC zoning systems. Built for a nominal 18 x 16 inch duct opening, it uses a 3-wire actuator with a built-in LED status indicator to control airflow through individual zones. The bottom-mount actuator configuration allows for installation in tight mechanical spaces where side access is limited. Licensed HVAC technicians install this damper as part of a zone control system to regulate conditioned air delivery to specific areas of a building.

This damper is suited for rectangular duct installations in forced-air heating and cooling systems. It operates as a two-position device, meaning the blade moves fully open or fully closed based on a signal from a zone control board. The bottom-mount design simplifies access to the actuator during commissioning and service calls. Typical applications include residential multi-zone systems and light commercial ducted air distribution where independent room or zone temperature control is required.

Key Features

• Nominal 18 x 16 inch rectangular damper opening fits standard duct sizes
• Two-position operation for full open or full closed airflow control
• 3-wire actuator provides simple wiring interface to zone control boards
• Built-in LED indicator allows quick visual confirmation of actuator status
• Bottom-mount actuator design accommodates restricted installation spaces
• Package dimensions of 21 x 23 x 8 inches support straightforward jobsite handling

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular ducted forced-air HVAC zoning systems accepting a 3-wire actuator signal.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handler or furnace and disconnect power to the zone control system before wiring the actuator. Secure the damper body into the duct using sheet metal screws and seal edges with foil-backed tape per local mechanical code requirements. Verify LED indicator function and zone controller communication before returning the system to service.