15
/15
B. Nominal base dimension (mm)
H. Nominal height dimension (mm)
1. Plasterboard infill panel, thickness 12,5 mm
2. Self-drilling screw Ø 3,5 X 45 mm
EI 120 S Installation within vertical light wall (gypsum blocks wall)-
Special cases
Installation in contact with ceiling or floor or side wall
Opening dimensions are as indicated in the previous section.
Apply only three plasterboard layers "U" shaped along the three free
sides of damper.
This installation is allowed for two fire dampers paired in battery as
well.
Corner room installation
Opening dimensions are as indicated in the previous section.
Apply two plasterboard layers, to compose a “L” shape on the two
free sides of the fre damper.
This installation is allowed for two fire dampers paired in battery as
well.
In case of two side by side paired fre dampers it is necessary to
position the fre dampers with vertical axis, due to the mechanism
presence.
1. Ceiling contact installation
2. Corner room installation
3. Plasterboard infill panel, thickness 12,5 mm
4. Installation wall
5. Ceiling or floor
6. Side vertical wall
Installation within vertical light wall (Shaft wall)
WKS25 fire dampers are tested and approved in:
Fire resistance classification
Hole size “D1 x D2”
[mm]
Damper protrusion from
the wall “E”
[mm]
Wall minimum thickness “S”
[mm]
Sealing
EI 90 S Installation within vertical light wall (Shaft wall)
EI 90 S
(300 Pa)
(B+90) x (H+90)
185
90
Plasterboard infill panel,
thickness 20 mm
B
Nominal base of the damper
H
Nominal height of the damper
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the table and in the drawing.
Filling
It is not necessary to insert any material, but simply cover the gap
between the damper and the wall by applying on face of the wall
mechanism side a layer of plasterboard, to a total minimum thickness
of 20 mm, to make a frame 75 mm wide.
B. Nominal base dimension (mm)
H. Nominal height dimension (mm)
1. Plasterboard thickness 20 mm
2. Plasterboard infill panel, thickness 20 mm
3. Metal frame
4. Self-drilling screw Ø 3,5 X 70 mm
