Barometric Relief Damper

A barometric relief damper is a device used in HVAC systems to regulate the flow of air and maintain the appropriate pressure levels within a building or ductwork. It is typically installed in the ductwork to allow the release of excess air pressure or to relieve negative pressure.

The damper works by automatically opening or closing based on the changes in the pressure differential between the inside and outside of the duct. When the pressure inside the duct becomes too high, the damper opens to release the excess air, preventing damage to the HVAC system or building. On the other hand, if the pressure inside the duct becomes too low, the damper closes to prevent the entry of outdoor air or unwanted contaminants.

Installation Manual

Click the e-library symbol for the latest version of the Barometric Relief Damper Installation Instructions.

WARNING:

Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.