Io Hvac Controls ZD-2818 Modulating Zone Damper 28x18

Product Description

The IO HVAC CONTROLS ZD-2818 is a modulating zone damper built for commercial HVAC zoning applications. It provides variable airflow control within ducted systems, allowing individual zones to receive precisely regulated conditioned air based on demand. At 28 inches wide and 18 inches tall with a 6-inch depth, this damper fits standard commercial duct openings and installs in-line with the supply or return air path. Weighing 16 pounds, it is a substantial, full-size unit suited for commercial-grade ductwork. Licensed HVAC technicians and commercial mechanical contractors are the typical installers for this class of equipment.

The ZD-2818 is designed for commercial zoning systems where modulating control is required rather than simple open or closed operation. Modulating dampers accept a variable control signal to position the blade at any point between fully open and fully closed, enabling precise zone-by-zone temperature and airflow management. This makes the ZD-2818 appropriate for VAV-style zoning configurations in light commercial and commercial buildings where a zone controller or building automation system governs airflow distribution across multiple zones.

Key Features

• Modulating operation for variable airflow control across commercial zones
• 28-inch width by 18-inch height blade opening fits large commercial duct sections
• 6-inch depth allows installation in standard duct framing without major modification
• 16-pound construction indicates heavy-gauge commercial-grade build quality
• Compatible with zone controllers that output a modulating control signal

Compatibility

Designed as an OEM-style modulating zone damper for commercial ducted HVAC zoning systems requiring a 28 x 18 inch damper opening.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified mechanical contractor familiar with commercial zoning systems. Shut down the air handling unit and de-energize all associated controls before cutting into ductwork or making any wiring connections. Ensure the damper is installed with the blade shaft oriented correctly per the actuator requirements and that control wiring is run in accordance with NEC guidelines. Verify actuator signal compatibility with the zone controller before commissioning.