Round Duct Fire Damper Installation

The fdr25 is rated for maximum velocity of 2 000 fpm 10 2 m s and 4 w g.

Round duct fire damper installation.

Lloyd industries has been an active manufacturer of access doors fire and smoke dampers and h v a c. Has provided underwriters laboratory approved fire dampers as well as other essential products for the h v a c. The fsdr25 is the ideal choice when round duct is used on a project. Then seal both sides with duct tape.

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 damper is rated for maximum velocity of 3 000 fpm and 4 102 static pressure. Help protect your buildings and the people in them from the dangerous spread of fire and smoke in an emergency situation. Fasteners may be used as followed.

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. 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. Since the development of modern fire damper protection equipment lloyd industries inc. Duct sleeve connections listed in ul 555 sixth edition standard for fire dampers 2.

Above with a maximum of two 10 sheet metal screws on each side and on. The integral frame and unique cinch plate design provides a low cost high performing damper. Remove the fasteners from the damper connect it to the duct through these holes and into the drilled holes and tighten. 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 standard installation is with the leading edge of the closed blade within the walls partitions or masonry floors. Installation may be obtained. Open up the duct work and drill two holes on opposite edges of the tube.

Damper will be factory supplied with one retaining plate secured to the damper sleeve on the operator side of the damper. These holes should line up with the pre drilled holes on the damper. They are designed for use with round duct and the openings may be square or round. Joints using connections shown in 1.

Get the right fire and smoke dampers from grainger today. Detail of opening preparation and fire damper installation. Greater than 22 559mm duct. C a 4 102mm drawband.

Products for over 35 years. Wall rating 2 hr. Step 5 install damper. With fire resistance rating of less than 3 hours.