Io Hvac Controls zd-18 Modulating Zone Damper 18 Inches

Product Description

The IO HVAC CONTROLS zd-18 is an 18-inch modulating zone damper built for commercial HVAC zoning systems. It regulates airflow within duct systems by adjusting blade position across a range of positions rather than switching between fully open and fully closed, allowing precise zone-by-zone temperature and airflow control. The modulating design makes it well suited for variable air volume applications where staged airflow adjustment is required. Licensed HVAC technicians and commercial mechanical contractors are the primary installers of this type of equipment.

The zd-18 is intended for commercial HVAC installations where zoning control is required across larger duct runs. An 18-inch round or compatible duct opening is required at the install location. This damper fits into systems where a zone controller or building automation system sends a modulating signal to adjust blade position in response to zone demand. Typical applications include multi-zone commercial rooftop unit systems, air handler systems, and other commercial forced-air distribution setups.

Key Features

• 18-inch size suits larger commercial duct installations
• Modulating operation enables precise airflow control across a range of positions
• Designed for commercial-grade HVAC zoning applications
• Compatible with zone controllers that output a modulating control signal

Compatibility

Designed as an OEM-style modulating zone damper for commercial HVAC duct systems requiring an 18-inch damper with modulating control capability.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with commercial duct systems and zoning controls. Shut down the air handling unit and de-energize the zone control system before installing or servicing the damper. Verify that the control signal type from the zone controller is compatible with the damper actuator before wiring. Follow local mechanical codes and manufacturer wiring diagrams when making low-voltage control connections.

Technical Specifications

• Size: 18 inches
• Product Type: Modulating Zone Damper
• Application: Commercial

Standard Information

• Brand: IO HVAC CONTROLS
• Manufacturer Part Number: zd-18