User Manual 5.1-1 (2018-09) 28
Subject to change
Series FK92K
2
H
3
2
1
7
15
8
11
9
13
9
7
1
6
37.5
120
71
8
8
6
9
13
11
14
13
1
5
10
FK90K fire damper with set of gaskets DS (1) on ventilation duct (2)
wrapped in mineral wool (3). Shown without claddings or suspension.
Parts list
⇒
see page 29
11
Installation with set of gaskets DS on ventilation
ducts with a fire resistance period remote from
rigid walls and ceilings and metal stud walls.
The following
minimum thicknesses W, D [mm]
are
required for installing the FK90K fire dampers
:
Fire resistance period in minutes
30
60
90
Rigid walls and ceilings
100
Metal stud walls with
≥
2-layer cladding
on both sides
95
Details
on wall types and ceilings
⇒
see pages 14,
17 and 18
Weight
[kg] FK90K fire dampers with
standard design
2
kg must be added for motor drives.
Weights of the suspension, ventilation duct,
insulation, cladding, etc. should be factored
in.
H/B 100 150 200 250 300 400 500 600 700 800
100 7 8 8 9 9 11 12 13 15 16
125 7 8 9 10 10 11 13 14 15 16
150 8 9 9 10 10 12 13 14 16 17
175 8 9 9 10 11 12 14 15 17 18
200 8 9 10 11 11 12 14 15 17 18
225 9 10 10 11 11 13 15 16 18 19
250 9 10 10 11 12 13 15 16 18 19
Permissible weight G
for a suspension fixture with two
threaded rods
made of steel
with 90 minute°
)
fire resistance period:
Size
M8 M10 M12
A
S
[mm²]
36.6 58.0 84.3
Weight G [kg]
44
70
104
A
S
: Tensile stress cross-section according to DIN 13
°
)
Stress limit
s ≤
6 N/mm² according to DIN 4102-4
FK90K fire dampers installed remote from walls are generally suspended
using steel threaded rods arranged in pairs. These should be attached to
ceilings according to the fire resistance period. Threaded rods that end
above the ceilings can be secured there with nuts and washers made of
steel. If plugs are used for fastening to ceilings, follow the manufacturer's
specifications. End plates can be used to distribute the load acting on the
threaded rod across multiple fastenings.
Threaded rods of up to 1.50 m in length can be left unclad. Cladding
is required for longer threaded rods (e.g. according to Promat
work-
sheet 478).
With FK90K fire dampers installed remote from ceilings, the weight forces
are transferred to the ceiling via the sheet steel ventilation duct.
FK90K fire dampers
Installation remote from (1) rigid walls and ceilings and metal stud walls
Option:
Butt joint
Suspensions
