Io Hvac Controls SD-04 Round Zone Damper 4 Inches

Product Description

The IO HVAC CONTROLS SD-04 is a 4-inch round auxiliary zone damper designed for use in forced-air HVAC zoning systems. It controls airflow to individual zones by opening or closing within the ductwork, allowing independent temperature management across different areas of a building. The SD-04 is sized for 4-inch round duct and is installed by licensed HVAC technicians during zone system setup or as a replacement in existing multi-zone configurations. At 3 pounds, it is a lightweight component suitable for both new installations and retrofit applications.

This damper is intended for residential and light commercial forced-air systems where auxiliary zoning is required. It fits into 4-inch round duct runs and works in conjunction with a zone control board and thermostat to regulate conditioned air delivery. It is a common component in systems where a central air handler serves multiple independently controlled spaces.

Key Features

• 4-inch round duct compatibility for auxiliary zone control
• Lightweight construction at 3 pounds for easy handling and installation
• Designed for integration with standard HVAC zone control systems
• Compact form factor with 9 x 13 x 9 inch package dimensions
• Suitable for residential and light commercial zoning applications

Compatibility

Designed as an OEM-style auxiliary zone damper for use in 4-inch round duct configurations within forced-air HVAC zoning systems.

Installation Notes

Installation should be performed by a qualified HVAC technician. Power down the air handler and zone control system at the breaker before beginning any ductwork or wiring connections. The damper must be secured properly within the duct run to ensure an airtight fit and correct airflow direction. Follow local mechanical codes and the zone controller manufacturer's wiring guidelines when connecting the actuator leads.