Round Fire Damper Installation

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.

Round fire damper installation.

Louver information and selection. A general diagram of a standard fire damper installation is shown in figure 1. 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. While there are other elements of an approved damper installation this figure will represent the elements in this discussion.

List is a state of the art web program that allows engineers and architects to select the right louver based on application and performance criteria. 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. Look through this selection for a round rectangular or square damper in the size that fits your ductwork retaining angle frames and fusible links. The retaining angles on both sides of the fire damper may be inverted in order to accomodate a register or grille.

Wall rating 2 hr. Manufacturer of product for hvac. All ul listed dampers are tested according to ul test standards. Get the right fire and smoke dampers from grainger today.

The following information may vary among different manufacturers and should not serve as a general guide of damper installation. The dampers are to be installed square and free from twisting or racking. Damper will be factory supplied with one retaining plate secured to the damper sleeve on the operator side of the damper. The fdr25 is rated for maximum velocity of 2 000 fpm 10 2 m s and 4 w g.

A minimum of 4 equally spaced 20 gauge. Safe air dowco s installation notes are applicable to fire dampers smoke dampers and combination dampers on most occasions. Lloyd industries offers a wide range of fire damper products including back draft dampers fire rated access doors air control dampers and smoke dampers. Detail of opening preparation and fire damper installation.

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 dampers are designed for operation in the vertical or horizontal position with blades running horizontal. Ul 555 is the test.