INSTALLATION
WH25
LINDAB SAFE
30/50
Installations remote from the vertical wall with Fire Batt (Weichschott) sealing
Refer to the section Construction supports characteris-
tics p.17 for further information.
Comply with the minimum distances indicated on section
Minimum distances p.15.
Wall opening
A opening must be provided in the wall as indicated in the
table and in the drawing
Damper positioning
Connect re damper to the galvanized steel duct as indi-
cated in the drawing, with 4 screws Ø4.2x13
Install the damper with the mechanism facing away from
the wall as indicated in the drawing.
Between re damper and wall the maximum distance is
1000 mm.
The maximum length of the part of duct connected to the
damper is 2100 mm
The re damper has to be xed and suspended from the
ceiling as indicated in the drawing.
The hanging structure is composed by:
– 2 C-shaped steel proles 10x41x41x41x10 mm
– 2 M10 threaded rods
– 4 M10 nuts
Position the threaded rods 1000 mm from the wall and at a
distance of 100 mm from the side of the damper.
Filling
Fill the space between the damper and the wall using Fire
Batt (Weichschott) sealing made from two rock wool pan-
els with minimum thickness of 50 mm and minimum den-
sity of 140 kg/m³.
Cover the duct over its entire length and re damper with
2 rock wool panels 50 mm thick and with a density of 140
kg/m³.
Fix rst layer of rock wool panel to the duct with screws Ø5
X 60 mm and washers 40 X 40 mm, and the second one
with screws Ø5 X 120 mm and washers 40 X 40 mm.
Fill the space between rock wool panels and the the
damper with one rock wool panel with minimum thickness
of 50 mm and minimum density of 140 kg/m³.
The panels must be covered externally with endothermic
varnish type PROSTOP E PASTE or HILTI CFS-CT (minimum
thickness of 1 mm) and with an internal perimeter sealant
type PROMOSTOP E PASTE or HILTI CFS-S ACR (minimum
thickness of 1 mm).
Fire resistance classi-
cation
“D” hole size
[mm]
Wall minimum thickness
“S”
[mm]
Sealing
Rigid wall
Installation remote from the vertical rigid wall with Fire Batt (Weichschott) sealing
Wall minimum density 550 kg/m³
EI 120 S
(300 Pa)
EI 90 S
(500 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
Flexible wall
Installation remote from vertical light wall (plasterboard) with Fire Batt (Weichschott) sealing
Wall rock wool density up to 100 kg/m³
(optional)
EI 120 S
(300 Pa)
EI 90 S
(500 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
Installation remote from vertical light wall (gypsum blocks) with Fire Batt (Weichschott) sealing
Wall minimum density 995 kg/m³
EI 120 S
(300 Pa)
EI 90 S
(500 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
WH25
LINDAB SAFE
30/50
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