Io Hvac Controls RM-2218 Rectangular Zone Damper 22x18

Product Description

The IO HVAC CONTROLS RM-2218 is a rectangular zone damper designed for zoned HVAC duct systems. It ships with a 3-wire Belimo actuator rated at a 35-second stroke time, giving the actuator enough travel speed for responsive zone control without abrupt airflow transitions. The damper body measures 22 x 18 inches and weighs 12.73 pounds. It is installed by licensed HVAC technicians in ducted forced-air systems where independent temperature control is required across multiple zones. The combination of the IO HVAC CONTROLS damper and the integrated Belimo actuator makes this a ready-to-install assembly rather than a field-paired component.

This damper is suited for residential and light commercial zoning applications where a 22 x 18 inch rectangular duct opening is present. It fits into existing ductwork as part of a multi-zone control system managed by a compatible zone control panel. The 3-wire actuator wiring configuration supports standard spring-return or modulating zone control setups common in split-system and air-handler installations. HVAC contractors installing zone dampers in retrofit or new-construction duct systems will find this assembly ready for connection to low-voltage zone control wiring.

Key Features

• 22 x 18 inch rectangular damper body fits standard duct openings of that size
• Integrated Belimo actuator eliminates the need for a separately sourced actuator
• 3-wire actuator connection supports common zone panel wiring configurations
• 35-second actuator stroke time provides smooth, controlled airflow transitions
• Factory-assembled unit reduces field installation time

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for rectangular duct systems requiring a 22 x 18 inch damper with a 3-wire Belimo actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air-handling unit and set the thermostat to off before working in the duct system. Secure the damper body to the duct using appropriate sheet-metal fasteners and seal with foil-backed tape or mastic per local mechanical code requirements. Connect the 3-wire low-voltage actuator leads to the zone control panel according to the panel manufacturer's wiring diagram.