Io Hvac Controls RM-1806 Rectangular Zone Damper 18x6

Product Description

The IO HVAC CONTROLS RM-1806 is an 18 x 6 inch rectangular zone damper designed for use in forced-air HVAC zoning systems. It ships with a 35-second Belimo actuator wired on a 3-wire configuration, allowing for controlled open and close operation tied to a zone controller or thermostat. Zone dampers regulate airflow to individual zones, enabling independent temperature control throughout a structure. This unit is installed by licensed HVAC technicians as part of a multi-zone duct system and weighs 6.73 pounds. The Belimo actuator is factory-mounted, reducing field assembly time during installation.

The RM-1806 is suited for residential and light commercial forced-air zoning applications where rectangular duct runs require airflow modulation. It fits into an 18 x 6 inch rectangular duct opening and is typically installed at branch takeoffs or zone boundaries within the supply trunk. The 3-wire actuator interface is compatible with standard zone control boards that provide open, close, and common terminals. This damper is appropriate for new zoning installations and retrofit projects where duct geometry matches the 18 x 6 inch form factor.

Key Features

• 18 x 6 inch rectangular damper body sized for standard duct openings
• Factory-installed Belimo actuator with 35-second stroke time for smooth, controlled airflow transitions
• 3-wire actuator configuration compatible with open/close zone control boards
• Compact package footprint: 10 inches wide, 25 inches tall, 8 inches deep
• Ships ready to install with actuator pre-mounted, minimizing field labor

Compatibility

Designed as an OEM-style rectangular zone damper replacement or new-installation component for forced-air HVAC zoning systems using 18 x 6 inch rectangular duct configurations and 3-wire zone control boards.

Installation Notes

Installation should be performed by a qualified HVAC technician familiar with forced-air zoning systems. Disconnect and lock out power to the air handler and zone control panel before beginning work. Secure the damper in the duct using sheet metal screws and seal all joints with approved foil tape or mastic to maintain duct integrity. Verify actuator wiring polarity and terminal assignments match the zone control board specifications before restoring power.