Io Hvac Controls HD-1812 Zone Damper 18x12 2 Wire Actuator

Product Description

The IO HVAC CONTROLS HD-1812 is an 18 x 12 inch rectangular two-position zone damper with an integrated 2-wire actuator, designed for use in forced-air HVAC zoning systems. This damper controls airflow to individual zones by moving between fully open and fully closed positions, allowing the system to direct conditioned air only where it is needed. The 2-wire actuator simplifies wiring and integrates cleanly with standard zone control boards. Licensed HVAC technicians typically install this component as part of a residential or light commercial zoning retrofit or new construction ducted system.

The HD-1812 is suited for rectangular duct runs in residential and light commercial forced-air systems where zone control is required. Its two-position operation makes it compatible with low-voltage zone control panels that switch the actuator circuit to open or close the blade. The 18 x 12 inch duct opening size fits standard rectangular trunk or branch duct configurations commonly found in split systems and air handler installations.

Key Features

• Two-position (open/close) operation for straightforward zone control integration
• Integrated 2-wire actuator reduces field wiring complexity
• 18 x 12 inch rectangular duct opening fits standard trunk and branch duct sizes
• Rectangular housing dimensions of 14 inches wide, 24 inches tall, and 8 inches deep
• Weighs 9 pounds for solid construction in ducted airflow applications

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular ducted forced-air HVAC systems requiring two-position zone control with a 2-wire actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with applicable mechanical codes. Shut down and lock out the air handler or furnace before cutting into ductwork or making any electrical connections. The 2-wire actuator circuit should be wired to a compatible low-voltage zone control board following the board manufacturer's wiring diagram. Verify duct dimensions and confirm the damper blade moves freely through its full range of travel before restoring system power.