As with all joints contractor must seal duct collar connection in field after installation.
Ceiling fire damper installation.
1 8 10 expansion joint per linear foot ii.
A 36 x 20 fire damper sleeve will have an opening of.
Fire and heat protection where hvac components penetrate the ceiling membrane.
Maximum size limits of each individual ceiling damper model must be observed.
A ceiling radiation damper closes automatically to restrict the passage of heat.
Each type of damper support system is described with damper being mounted in conjunction with various air devices.
They are used to protect hvac openings in fire rated horizontal ceiling assemblies.
Perimeter angles shall overlap the wall floor by a minimum of 1.
Listed clearance requirements are 1 8 per linear foot unless stated otherwise.
Ceiling openings up to a 24 x 24 610mm x 610mm 576 sq.
Equipped with fusible link at no extra charge.
Tests that apply to ceiling dampers intended for installation in fire resistance rated floor ceiling and roof ceiling assemblies.
Sleeve is not required to be centered but can rest on the bottom of the opening.
The cfd2 is a ul555c classified ceiling fire damper.
Among other tests ul 555c includes a fire endurance test that utilizes the same time temperature curve used in ul 263.
The industrial grade backdraft dampers offer rugged construction and heavy gage materials to withstand the high velocities and back pressures associated with heavy duty installations.
Minimum clearance shall be.
With attention to the following requirements the ceiling grid system provides all required support for installation of lay in style ceiling dampers and the grilles.
The investigation of ceiling dampers for use in floor ceiling or.
Ceiling radiation dampers shall comply with ul 555c and shall be installed in accordance with the manufacturer s installation instructions in the fire resistive ceiling membrane of floor ceiling and roof ceiling assemblies where required by the building code.
This allows the consumer more access to the damper in the event that maintenance needs to be performed or the fuse link requires replacing.
Fire damper sleeve clearance within wall floor opening i.
These installation instructions apply to a 3 hour rated ceiling radiation dampers aka ceiling dampers mounted in a ceiling with supports from 1 a ceiling grid system 2 ductwork above or 3 structure above.
Commercial dampers provide low pressure openings with excellent pressure drop performance.
Download pdf installation guides for lloyd industries fire dampers smoke dampers ceiling radiation dampers combo smoke and fire dampers and more.
From light operations to heavy duty industrial applications ruskin provides the perfect backdraft damper.
Foot on height and width of sleeve to a maximum of 1 1 2 e g.
