Io Hvac Controls TD-2018 Rectangular Zone Damper 20x18

Product Description

The IO HVAC CONTROLS TD-2018 is a rectangular zone damper designed for residential and light commercial HVAC zoning applications. It ships with a 60-second Belimo 3-wire actuator pre-mounted, providing reliable blade control for supply or return air distribution. Measuring 20 inches wide by 18 inches tall, this damper fits standard rectangular ductwork in forced-air systems. The 3-wire actuator configuration allows both open and closed position control, making it compatible with most conventional zone control boards. Licensed HVAC technicians typically install this damper as part of a multi-zone system retrofit or new construction zoning layout.

This damper is sized for 20 by 18 inch rectangular duct openings commonly found in residential and light commercial forced-air systems. It is specifically designed for use in Trane and American Standard zoning applications where OEM-style fitment and actuator compatibility are required. The included Belimo actuator provides consistent, repeatable blade positioning with a 60-second travel time, suitable for both cooling and heating season operation in ducted split systems and air handlers.

Key Features

• Pre-mounted 60-second Belimo 3-wire actuator for reliable open and closed blade control
• Sized for 20 by 18 inch rectangular duct openings
• 3-wire actuator wiring compatible with standard zone control boards
• OEM-style replacement designed for Trane and American Standard zoning systems
• Rectangular construction fits standard sheet metal supply and return duct configurations

Compatibility

Designed as an OEM-style replacement zone damper for Trane and American Standard rectangular duct zoning systems requiring a 20 by 18 inch damper with a 3-wire Belimo actuator.

Installation Notes

Installation should be performed by a licensed HVAC technician. Shut down the air handler or furnace and set the thermostat to off before cutting into ductwork or making any wiring connections. Secure the damper into the duct using sheet metal screws and seal all edges with foil-backed tape to prevent bypass air. Wire the actuator to the zone control board per the board manufacturer wiring diagram, following NEC low-voltage wiring requirements.