Round Fire Damper Installation

Lloyd industries offers a wide range of fire damper products including back draft dampers fire rated access doors air control dampers and smoke dampers.

Round fire damper installation.

Detail of opening preparation and fire damper installation. 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. 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 to be installed square and free from twisting or racking.

All ul listed dampers are tested according to ul test standards. 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. The following information may vary among different manufacturers and should not serve as a general guide of damper installation. 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 integral frame and unique cinch plate design provides a low cost high performing damper. The dampers are designed for operation in the vertical or horizontal position with blades running horizontal. A minimum of 4 equally spaced 20 gauge. Help protect your buildings and the people in them from the dangerous spread of fire and smoke in an emergency situation.

The fdr25 is rated for maximum velocity of 2 000 fpm 10 2 m s and 4 w g. Louver information and selection. Safe air dowco s installation notes are applicable to fire dampers smoke dampers and combination dampers on most occasions. 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.

The retaining angles on both sides of the fire damper may be inverted in order to accomodate a register or grille. While there are other elements of an approved damper installation this figure will represent the elements in this discussion. 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. Wall rating 2 hr.

Ul 555 is the test. A general diagram of a standard fire damper installation is shown in figure 1. Damper will be factory supplied with one retaining plate secured to the damper sleeve on the operator side of the damper.