Ceiling Radiation Damper Installation

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.

Ceiling radiation damper installation. The cfd2 is a ul555c classified ceiling fire damper. If you are interested in ceiling radiation dampers you can contact your local ceiling radiation damper representative on our local hvac rep page. To better understand ceiling radiation dampers. Series 51sb in a boot true truss.

The model 241frd has been especially designed to provide protection and for simple installation in specific design wood truss ceiling assemblies. X 11 2 in. Ceiling radiation dampers. Each type of damper support system is described with damper being mounted in conjunction.

Ceiling radiation dampers are also applicable for installation in boots and register boxes. 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. We fabricate insulated and non insulated boxes as well as 90 end and straight boots. 5 ceiling radiation dampers dampers supported from ductwork above note about support when main ducts are supported by 16 ga.

These installation instructions apply to ceiling radiation dampers mounted in 3 hour rated ceiling with supports from 1 a ceiling grid system 2 ductwork above or 3 structure above. Models 0755 0756 d 0757 d 0757 cb 0757 db 0757 eb 0763 fb and 0763 gb ceiling radiation dampers are designed and tested for simple installation in specific ul floor ceiling and roof ceiling wood truss assemblies. Steel channels with 9 16 in. 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.

Let s examine the protection provided by each type of damper. Fire and heat protection where hvac components penetrate the ceiling membrane. 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.