Mechanical · S-QZG86

Fire/Smoke Damper Detail

Materials

Elements

Walls Doors Ceilings Connections / Plates

About this detail

A fire and smoke damper is installed within a duct penetration through a fire-rated wall construction. The damper is normally closed without power, featuring an electric damper motor operator controlled by a duct detector or engineered smoke control system. Rectangular duct connections utilize break-away connections such as an S-slip or equal, and the sleeve is secured with a minimum 1-1/2 inch by 1-1/2 inch by 14 gauge angle fastened with number 10 sheet metal screws at 8 inches on center. A duct smoke detector is positioned upstream of the smoke barrier within 5 feet of the damper, with sample tubes extending the full width of the duct. Additional components include hinged access doors, duct supports at each end, and electrical control connections linked to the fire alarm control panel and direct digital control system.

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