User Manual 5.1-1 (2018-09) 18
Subject to change
Series FK92K
FK90K fire dampers
Installation in metal stud walls (1b) Metal framework
Installation openings
for FK90K fire dampers require cut-outs in the cladding. In the metal studs, trimmers or
special arrangements may be necessary.
Sub-structures of metal stud walls consist of CW profiles as supports. These should be set on the floor and on the ceil-
ing in UW profiles fastened to the floor and ceiling. Supports adjoining rigid walls are then attached to these profiles.
Installation openings for FK90K fire dampers should be produced, as described above, as circumferentially sealed
frames made of profiles. Sealed profile webs are possible, if required, using box-shaped nesting. The mineral wool
fillings or the fire damper casing abut against these profiles. Exceptions are possible with installation openings which
have an accurate fit.
Severed supports will require trimmers which can simultaneously serve as the frame for the installation openings.
Trimmers are needed for installation openings with widths larger than the spans.
Butt joints s
≤
2
up to
5
mm
/ Only if W
≤
115
mm
Sealing or filling with gypsum joint filler
Gap s
≤
20
mm
Filling with filling F2 (mineral wool)
Span
Double
installation
Span
Span
Span
Span
Span
Span
Span
Span
Span
Span
Examples of installation openings
Depending on the type of wall, suitable connections can be used to
interrupt profiles on ceilings and floors
for
the purpose of installing FK90K fire dampers.
⇒
see pages 19 to 21 and 26
For
H trimmers
with horizontal pro-
files above and below the installation
opening and with vertical profiles on
the right and left edge, non-adjacent vertical profiles must be ≥ 500 mm longer. Clad-
ding for these profiles must be screwed on with spacing of
≤
200 mm.
Trimmers
, as shown for retroactive installation, require additional
metal studs on the left and right. These should be set in the floor and
ceiling profiles.
For this purpose, the wall can be
cut and new openings created. New
claddings must then be attached to
the added and existing studs, mak-
ing sure to maintain the necessary
overlaps.
Surplus studs can be removed as
long as the intended spans are not
exceeded.
Span
Span
Span
Span
Span
Span
