Mechanical · M-ATX4X

Combination Fire Smoke Damper Detail

Materials

Elements

Walls Doors Floors / Slabs Connections / Plates Roof / Floor Openings

About this detail

A combination fire smoke damper is installed in and fastened to a duct sleeve, which passes through a floor or wall opening. Minimum 16-gauge 1-1/2 inch by 1-1/2 inch mounting angles secure the sleeve assembly to the structural wall or floor with caulking material applied at the joint. The damper assembly includes a 120-volt actuator, an electric resettable link firestat, and an over-center link. A duct smoke detector is installed on the ductwork nearby, with maximum distances specified for connections and components.

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