Ceiling Radiation Damper Installation Detail

A ceiling radiation damper closes automatically to restrict the passage of heat.

Ceiling radiation damper installation detail.

Ceiling radiation dampers are available in butterfly style and curtain style. 2 ceiling radiation damper may be connected directly to the grille and supported by hanger straps see detail e or note. Steel channels with 9 16 in. 5 ceiling radiation dampers dampers supported from ductwork above note about support when main ducts are supported by 16 ga.

To better understand ceiling radiation dampers. The ceiling damper and diffuser neck may be directly connected to the steel duct drop see figure 3 detail c. The ceiling damper may be connected directly to the diffuser neck. Ceiling fire dampers also known as radiation dampers are designed and tested to limit the radiant heat transfer through an air inlet outlet opening in the ceiling membrane of a fire resistance rated floor ceiling or roof ceiling assembly.

Up to 3 hour ceiling radiation damper installation instructions c e i l i n g r a d i a t i o n d a m p e r s i c f d 1 5 m 6 1 0 2 7 1 a p r i l 2 0 2 0 a. Minimum flanges located 1 inch to 3 inches from and on both sides of a steel duct drop and these channels are suspended by 12 swg wire from. They are used to protect hvac openings in fire rated horizontal ceiling assemblies. The connection of the ceiling radiation damper diffuser neck and steel duct drop see connection notes section on page 3 may be satisfied in two ways.

Operated by a fuse link these dampers come spring loaded and are available with an easy access assembly. Download pdf installation guides for lloyd industries fire dampers smoke dampers ceiling radiation dampers combo smoke and fire dampers and more. Let s examine the protection provided by each type of damper. Opening in ceiling membrane see page 1 may be up to 1 25mm larger than the nominal size of the ceiling radiation damper i e.

A 12 x 12 305mm x 305mm nominal ceiling radiation damper could have a maximum ceiling membrane opening of 13 x 13 330mm x 330mm. X 11 2 in. When it is necessary to install the ceiling damper more than 3 3 4 from the finished ceiling an additional application of.