Round Fire Damper Installation

The integral frame and unique cinch plate design provides a low cost high performing damper.

Round fire damper installation.

Help protect your buildings and the people in them from the dangerous spread of fire and smoke in an emergency situation. Damper will be factory supplied with one retaining plate secured to the damper sleeve on the operator side of the damper. Detail of opening preparation and fire damper installation. Get the right fire and smoke dampers from grainger today.

Louver information and selection. A minimum of 4 equally spaced 20 gauge. A general diagram of a standard fire damper installation is shown in figure 1. Ul 555 is the test.

Wall rating 2 hr. While there are other elements of an approved damper installation this figure will represent the elements in this discussion. This installation instruction applies to fire dampers static dynamic curtain single and multi blade types mounted in the plane of an ul approved fire partition. Look through this selection for a round rectangular or square damper in the size that fits your ductwork retaining angle frames and fusible links.

Ruskin fdr25 is a true round fire damper designed for use in fire rated walls and floors and is the perfect choice when using round duct. Manufacturer of product for hvac. 2 1 2 stud or runner 1 2 gypsum wallboard retaining angle damper sleeve fire damper duct 1 2 thick filler pieces 2 1 2 wide to be. Clearance between the damper sleeve and the round or square wall opening shall be a minimum of 1 2 13 mm and a maximum of 1 25 mm.

The retaining angles on both sides of the fire damper may be inverted in order to accomodate a register or grille. Safe air dowco s installation notes are applicable to fire dampers smoke dampers and combination dampers on most occasions. All ul listed dampers are tested according to ul test standards. Fire dampers are ul555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems designed to close upon the detection of heat.

The fdr25 is rated for maximum velocity of 2 000 fpm 10 2 m s and 4 w g. Lloyd industries offers a wide range of fire damper products including back draft dampers fire rated access doors air control dampers and smoke dampers. The dampers are designed for operation in the vertical or horizontal position with blades running horizontal.