Listed clearance requirements are 1 8 per linear foot unless stated otherwise.
Ceiling fire damper installation.
Damper 47 3 4 x 47 3 4 collar 48 x 48 opening 49 1 2 x 49 1 2.
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.
Fire damper sleeve clearance within wall floor opening i.
A ceiling radiation damper closes automatically to restrict the passage of heat.
The investigation of ceiling dampers for use in floor ceiling or.
A 36 x 20 fire damper sleeve will have an opening of.
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.
1 8 10 expansion joint per linear foot ii.
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 and heat protection where hvac components penetrate the ceiling membrane.
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.
Among other tests ul 555c includes a fire endurance test that utilizes the same time temperature curve used in ul 263.
Minimum clearance shall be.
Download pdf installation guides for lloyd industries fire dampers smoke dampers ceiling radiation dampers combo smoke and fire dampers and more.
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.
The cfd2 is a ul555c classified ceiling fire damper.
As with all joints contractor must seal duct collar connection in field after installation.
In maximum are allowable.
Operated by a fuse link these dampers come spring loaded and are available with an easy access assembly.
Commercial dampers provide low pressure openings with excellent pressure drop performance.
Perimeter angles shall overlap the wall floor by a minimum of 1.
Tests that apply to ceiling dampers intended for installation in fire resistance rated floor ceiling and roof ceiling assemblies.
From light operations to heavy duty industrial applications ruskin provides the perfect backdraft damper.
Equipped with fusible link at no extra charge.
Sleeve is not required to be centered but can rest on the bottom of the opening.
Foot on height and width of sleeve to a maximum of 1 1 2 e g.
