Hvac Klimaoprema FDC25, Technical Manual

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5.2.7 Installation remote from flexible/rigid wall

The wall is composed of 2x2 GFK plates, 12.5 mm thick, installed on a 48 mm wide steel construction. The interior of the 

wall is filled with mineral wool of 100 kg / m3 density.

Arrangement of steel profiles.

Recommended wall opening is 

Øn+70mm (wall cover with gypsium 

plates)

Install fire damper and secure it 

with self-tapping screws 4,3x10 

to duct

Fill space between duct and wall 

with mineral wool (Isover U pro-

tect). Additionally paint wool with 

Isover BSF in thickness of 1mm

Repeat the same procedure on the 

other side.Place the wool on ven

-

tilation duct and secure on joint 

woolwool with wire every 80mm. 

Place ventilation duct trough wall

Close installation with L profiles 

30x30x3mm. Additionally fix 

profiles to duct with self-tapping 

screws, and screw them to wall 

with 4,5x50 screws.

On connection wool-wall apply 

glue Isover BSK in thickness of 

2mm.

Additionally place steel protec-

tion on place where insulation on 

damper ends.

5.2.8 Installation in ceiling (Weichschott)

Installation material: Fire damper FDC, Mineral wool >140kg/m3, Fire protection coating, (HILTI weichschott system)

Recommended ceiling opening 

for fire damper installation is Ø 

+ 400mm, but openings from Ø + 

80…600 mm can also be used

Insert fire damper into ceiling

Damper blade must be closed 

during installation!

Fix the damper to the wall using 

screws

Cut additional 50 mm thick rings to 

cover fire damper perimeter from 

both sides

Connections of mineral wool 

should be sealed with intumescent 

fire resistant sealant. Mineral wool 

and damper casing must be coated 

with 2 mm thick fire protection 

coating