Io Hvac Controls SC-ZD-04 Zone Damper 4 Inches

Product Description

The IO HVAC CONTROLS SC-ZD-04 is a 4-inch modulating zone damper designed for commercial HVAC zoning applications. It regulates airflow within a duct system by modulating to intermediate positions, allowing precise zone-by-zone temperature control rather than simple open/close operation. At 3.875 x 3.875 x 7.875 inches and 3.5 pounds, it is compact enough for tight plenum and duct installations. Licensed HVAC technicians handling commercial zoning system retrofits or new construction installs are the primary installers for this component.

This damper fits into commercial zoning systems where independent airflow control per zone is required. It is suited for multi-zone VAV-style or zoned constant-volume systems in light commercial and commercial buildings. The modulating action allows the zone controller to dial airflow up or down in response to zone demand signals, improving system efficiency and occupant comfort. It installs inline within a round duct run serving an individual zone.

Key Features

• Modulating operation for precise airflow control beyond simple open/close damper function
• 4-inch round duct size for common commercial branch duct applications
• Compact profile at 3.875 x 3.875 x 7.875 inches for installation in confined spaces
• Lightweight construction at 3.5 pounds for straightforward single-technician installation
• Commercial-grade design appropriate for light commercial and commercial zoning systems

Compatibility

Designed as an OEM-style modulating zone damper for use in commercial HVAC zoning systems utilizing 4-inch round duct branch runs.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with commercial zoning controls and low-voltage wiring. Power down the air handler and de-energize the zone control panel before installing or wiring the damper. The damper must be mounted inline in the duct with the actuator accessible for wiring to the zone controller. Follow local mechanical codes and the zone controller manufacturer wiring instructions for proper modulating signal wiring.

Technical Specifications

• Duct Size: 4 inches
• Width: 3.875 inches
• Height: 3.875 inches
• Depth: 7.875 inches
• Weight: 3.5 pounds

Standard Information

• Brand: IO HVAC CONTROLS
• Manufacturer Part Number: SC-ZD-04