Ceiling Radiation Damper Installation Detail

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Ceiling radiation damper installation detail.

They are used to protect hvac openings in fire rated horizontal ceiling assemblies. Static ceiling radiation dampers models mrcd mscd mscdsb mccd ceiling radiation dampers covered under ul 555c intended for installation in hourly rated fire resistive floor ceiling and roof ceiling assemblies in accordance with the standard for fire tests of building construction and materials ul 263. Let s examine the protection provided by each type of damper. Steel channels with 9 16 in.

Ceiling radiation dampers are available in butterfly style and curtain style. When it is necessary to install the ceiling damper more than 3 3 4 from the finished ceiling an additional application of. Life safety products protect the openings in walls ceiling floors and or partitions to prevent the spread of fire and or smoke. 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.

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. X 11 2 in. 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. Ceiling radiation dampers.

For ceiling radiation dampers however since ceiling radiation dampers serve a somewhat different purpose than the other damper types there is often confusion about where a ceiling radiation damper should be used. Series 51sb in a boot true truss. 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.

2 ceiling radiation damper may be connected directly to the grille and supported by hanger straps see detail e or note. A ceiling radiation damper closes automatically to restrict the passage of heat. 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. Series 51sb read more.

The ceiling damper shall be attached to a minimum 22 gauge 0 85 steel sleeve duct drop by welding or with rivets or with 10 m5 sheet metal screws or with quick lock or bolted.