Io Hvac Controls EB-1212 Motorized Bypass Damper 12x12

Product Description

The IO HVAC CONTROLS EB-1212 is a heavy-duty motorized bypass damper designed to regulate airflow in zoned HVAC duct systems. When zone dampers close and static pressure rises in the supply duct, a bypass damper redirects excess air back to the return side, protecting the air handler or furnace from excessive static pressure buildup. This unit is built for demanding applications where reliable, repeatable damper actuation is required. The EB-1212 fits a 12 x 12 inch duct opening and ships at 9 pounds, making it a solid, full-metal-class assembly suited for commercial light-commercial and residential zoning installations.

This damper is used in forced-air zoning systems where multiple zone dampers are controlled by a zone control panel. It is typically installed in the supply plenum or a bypass duct that ties back to the return air side. Licensed HVAC technicians install this component during new zoning system builds or when retrofitting an existing single-zone system to multi-zone operation. It is appropriate for residential and light-commercial duct systems that require automatic pressure relief when one or more zones are closed.

Key Features

• 12 x 12 inch duct opening size for standard square duct collars
• Heavy-duty motorized actuator provides reliable open and close cycling
• Bypass function protects air handler from high static pressure in zoned systems
• Compact packaged depth of 8 inches for installation in tight mechanical spaces
• 9-pound assembly weight indicates robust construction suitable for permanent installation

Compatibility

Designed as an OEM-style motorized bypass damper for use with residential and light-commercial forced-air zoning control systems requiring a 12 x 12 inch bypass damper.

Installation Notes

A licensed HVAC technician should install this damper. Shut off power to the air handler and zone control panel before wiring the actuator. Verify the control voltage requirements of your zone panel match the actuator on this unit before making electrical connections. Follow local mechanical and electrical codes, including applicable sections of the IMC and NEC, for duct penetrations and low-voltage wiring.