Lindab WH25 - Installations remote from the floor

INSTALLATION
WH25
LINDAB SAFE
32/50
 Installations remote from the oor
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.
 Floor opening
A opening must be provided in the oor 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 oor as indicated in the drawing.
Between re damper and oor the maximum distance is
1000 mm.
The maximum length of the part of duct connected to the
damper is 2150 mm
The re damper has to be xed and suspended from the
ceiling as indicated in the drawing.
The re damper must be positioned just above the oor as
indicated in the drawing.
The hanging structure is composed by:
– 4 Angle connectors 105x105x90 mm
– Screws M8 x 40 mm
– Washers 15 x 9 mm
– Flush anchors M8 x 40 mm
 Filling
Fill the space between the oor and the damper using
mortar suitable for use in re resistant constructions, M10
class or higher or plaster putty.
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
EI 90 S Installation remote from the oor
Floor minimum density 650 kg/m³
EI 90 S
(500 Pa)
From Ø + 25
to Ø + 35
(circular hole)
100 Mortar or plaster putty sealing
EI 120 S Installation remote from the oor
Floor minimum density 650 kg/m³
EI 120 S
(300 Pa)
From Ø + 25
to Ø + 35
(circular hole)
150 Mortar or plaster putty sealing
The re damper must be positioned just above the oor as indicated in the drawing�
1. Floor
2. Duct
3. Fire damper
WH25
LINDAB SAFE
32/50