Lindab WH25 - Installations within floor

INSTALLATION
WH25
LINDAB SAFE
23/50
 Installations within 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
Position the damper in the opening so that the side of the
closing mechanism extends as indicated in the drawing.
 Filling
Fill the space between the oor and the damper as indicat-
ed in the table and in the drawing.
Fire resistance classi-
cation
“D” hole size
[mm]
Floor minimum thickness
“S”
[mm]
Sealing
EI 120 S Installation within oor
Floor minimum density 650 kg/m³
EI 120 S
(500 Pa)
From Ø + 25
to Ø + 35
(circular hole)
150 Mortar sealing
EI 90 S Installation within oor
Floor minimum density 650 kg/m³
EI 90 S
(500 Pa)
From Ø + 25
to Ø + 35
(circular hole)
100 Mortar sealing
1. Mortar M-10, EN998-2
D Hole size: see table above
S Floor minimum thickness: see table above
Lp Overlap length between re damper and duct: see section
Dimension p.11
WH25
23/50
LINDAB SAFE