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1. Mortar M-10, EN998-2
D Hole size: see table above
S Floor minimum thickness: see table above
Lp Overlap length between fire damper and duct: see section Dimension
Installations within vertical wall with Fire Batt (Weichschott) sealing
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 drawing.
The fire damper has to be fixed at the bottom and suspended from
the ceiling.
Filling
Fill the space between the damper and the wall using Fire Batt
(Weichschott) sealing made from two rock wool panels with mini-
mum thickness of 50 mm and minimum density of 140 kg/m³.
The panels must be covered on both faces of the wall with endo-
thermic varnish type PROMASTOP E PASTE or HILTI CFS-CT (mini-
mum thickness of 1 mm) and with an internal perimeter sealant type
PROMASTOP E PASTE or HILTI CFS-S ACR (minimum thickness of 1
mm).
Fire resistance classification
“D” hole size
[mm]
Wall minimum thickness “S”
[mm]
Sealing
Rigid w
all
EI 120 S Installation within rigid vertical wall with Fire Batt (Weichschott) sealing
Wall minimum density 550 kg/m³
EI 120 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
Fle
xible w
all
EI 120 S Installation within vertical light wall (plasterboard) with Fire Batt (Weichschott) sealing
Wall rock wool density up to 80 kg/m³
(optional)
EI 120 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
EI 120 S Installation within vertical light wall (gypsum blocks) with Fire Batt (Weichschott) sealing
Wall minimum density 995 kg/m³
EI 120 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole)
100
Rock wool 140 kg/m³ and
endothermic varnish sealing
1. Rock wool panel 50 mm thick with 140 kg/m³ density.
2. PROMASTOP E PASTE or HILTI CFS-S ACR type sealant
3. PROMASTOP E PASTE or HILTI CFS-CT endothermic varnish
4. Wall indicated in the table
Lp Overlap length between fire damper and duct: see section Dimension
D Hole size: see table above
S Wall minimum thickness: see table above
