Wildeboer FK92K Series User manual
The German original version of this document shall prevail User Manual 5.1-1 (2018-09) 1
The space-saving solution
Maintenance-free
FK90K fire dampers
■ Sizes100x100to800x250
■ Exceptionallyhighvolumeflows-Minimumpressuredrop-Extremelyquiet
■ Foruniversalusewithawiderangeofapplications
■ Fireclassification:EI30/60/90(ve- ho, i ↔o)SC10ooo
■ Hygienecertificate
■ EnvironmentalProductDeclarationaccordingtoISO 14025 and EN 15804
User Manual 5.1-1 (2018-09) 2 Subject to change
Series FK92K
FK90K fire dampers
Features and characteristics
Elastomer lip seal
- frictionless sealing -
Casing made of calcium silicate
NominalwidthB:100mmto800mm
NominalheightH:100mmto250mm
Length:260mm
LeaktightnessclassCaccordingto
EN 1751
Damper blade
canbeinstalledbothhorizontally
andvertically
- replaceable -
All-round enclosed
thermal release elements
70°Cor95°C
Option:
Corrosion-resistantreleaseelement70°C
Large free cross-section
Maximumvolumeflow
Minimum pressure drop
Extremelylowsoundpowerlevel
Connection holes for profiles from
20 mm in height
Option:
Profileswithepoxyresinpowder coating
Thermal-mechanical release
mechanism for single
handed operation
Option:
Electric actuators
Control openings (inspection openings)
forviewingbothsidesofthe
damper blade
Option:
Factory-mountedinstallation subframe ER5 made of
calcium silicate for sliding ceiling connection in metal
stud walls with cladding on both sides.
Fully enclosed:
•Operation unit
•Release mechanism
•Release element
UserManual5.1-1(2018-09)3Subject to change Series FK92K
Casingandexchangeabledamperblademadeofabra-
sion-andcorrosion-resistantcalciumsilicate,galvanized
steel components. Connection profiles for connections
withscrews,clampsandslidingrails.Permanentlydura-
bleelastomerlipsealsinwallsofcasing.Leaktightness
classCaccordingtoEN1751.
Option: galvanized steel components (connection pro-
files)alsowithepoxyresinpowdercoating.
Enclosed, maintenance-free drive mechanism in the
area of the casing wall as a self-locking transmission
for break-proof torque transmission. Sealed drive axles
made of stainless steel, with red metal bearings. Ther-
malreleasemechanismsfor70°Cor95°Cnominaltem-
perature.Theoperationunitscanbe actuated manually
orelectrically.⇒see page 4
Release mechanisms, operation units and electric actua-
torsareenclosedandfittedwithspringreturns.Theyare
maintenance-free, can be connected in a form-locking or
force-fittingmanner,areeasytoreplaceandcanbeeas-
ilyretrofittedasrequired.
For installation with horizontal or vertical damper blade
axles. Air inflow from any connection side. Connection
to ventilation ducts made of non-combustible or combus-
tible materials, including protective grilles.
Options:
•With installation subframe ER5 for sliding ceiling
connections with drops of up to 40 mm in metal stud
wallswithcladdingonbothsides.
⇒seepages6,22to24,35
•With set of gaskets DS for installation remote from
rigidwallsandceilingsandmetalstudwalls.
⇒seepages6,28to33,35
FK90K fire dampers
Description
Rigid wall
Rigid ceiling
Suspended ceiling
Fire-resistant wall
FK90K fire dampers
attached to adjacent walls
and/or ceilings
Minimum dimension h = 145 mm, whenusingoneFK90KfiredamperwithH=100mm.
Inthisexampleh≥ 290mmwithtwoFK90Kfiredampersinastackedarrangement.
Particularly suitable in situations where limited space
is available for installation
Exampleofinstallationinsuspendedceiling.
The same method can be used for raised floors.
Ventilationductsarenotshown.
Maintenance-free FK90K fire dampers according to EN 15650
Fireclassifications: EI 30/60/90 (ve- ho, i ↔o) S C10ooo
Declarationofperformance: DoP no.: CPR/FK90K/002
EnvironmentalProductDeclarationISO14025,EN15804:EPD-WBB-20130080-IBA1-DE
Additional national approvals in
Germany:
• Buildingmaterials:Z-56.4212-993
FK90K fire dampers are essen-
tiallymadefromnon-combustible
building materials.
Widths B[mm]: 100-150-200-250-300
400-500-600-700-800
Heights H[mm]:100-125-150-175-200-225-250
Length L[mm]: 260
All dimensions can be combined.
FK90K fire dampers in these sizes achieve fire resist-
anceperiodsofupto90minutesiftheyareinstalledin
accordancewiththefollowingstipulations.
Installationtypesinorremovedfromrigidwallsandceil-
ingsandmetalstudwallswithaminimumthicknessand
fire resistance period are possible.
Ifthewalls,ceilingshaveafireresistanceperiodofless
than 90 or 60 minutes, the fire resistance period of the
FK90K fire damper is reduced accordingly; partly if the
minimumthicknessislower.
User Manual 5.1-1 (2018-09) 4 Subject to change
Series FK92K
Enclosed release element
Enclosed release element
FK90K fire dampers
Release mechanisms and actuators
Option: Electric spring return actuator
with70°Creleaseelement;protectionclassIP54.
M220-9/H 230 V AC;9,2VA;Imax≤2 ms=0.27A.
M24-9/H 24 V AC/DC;6.1 VA/3.5 W;Imax≤2 ms =3.5 A.
Runtime:Opening≈ 60s,closing≈ 21 s.
CLOSED/OPENpositionindicatorsvialimitswitchfor
5 A at ≤240 V AC.
Halogen-freeconnectioncable;0.9mlong;
2 x0.75 mm²and6 x0.75mm².TheAMPconnector
plugs are detachable.
Option: with95°Creleaseelement.
Thermal-mechanical release mechanism - Standard -
with70°Creleaseelement;protectionclassIP54.
Option: withcoated70°Creleaseelement.
Option: withcoated95°Creleaseelement.
Option:withlimit switch
E Changeoverwithgold-platedcontactsfor5 A at
250 VACor24 VDC;protectionclassIP67;
1msiliconefreeconnectioncable3 x0.34 mm².
Oneortwocanbepluggedinforthe CLOSEDand/orOPEN
position indicator instead of blind caps.
Option: with remote release, mounted on thermal-mechani-
cal release mechanism. ⇒seepage35
FK90K fire dampers, series FK92K, are fitted with maintenance-free thermal-mechanical release mechanisms or
withthermal-electricalreleasemechanismsonthespringreturnactuators.Release occurs at a nominal temperature
of 70°C or 95°C.Coatedreleaseelementsprovideincreasedcorrosionprotection.
Electricspringreturnactuatorsalsoclosethefiredampersifthesupplyvoltageisinterrupted.Theyreopenthefire
dampers as soon as the voltage is present again.
Release mechanisms and operation units can be replaced on site!
Enclosed release
element
can be replaced
from the front.
Blind cap can
bereplacedwith
the OPEN limit
switch.
Manual release
“Red button”
Lever for opening the
fire damper.
Insertedlimit
switch CLOSED.
Option: Electric spring return actuator - Standard -
with70°Creleaseelement;protectionclassIP54.
M220-10/H 230VAC;6.5VA/3W; Imax≤5ms=4A
M24-10/H 24VAC/DC;4VA/2.5W; Imax≤5ms=8.3A
Runtime:Opening<60s,closing≈20s
CLOSED/OPENpositionindicatorsvialimitswitchesfor0.5A
at≤250VACorfor1mAupto3Aat5upto250VDC.
Halogen-freeconnectioncable;1mlong;2x0.75mm²and
6x0.75mm².TheAMPconnectorplugsaredetachable.
Option: with95°Creleaseelement.
Buttonforfunctioncheck
Buttonforfunctioncheck
User Manual 5.1-1 (2018-09) 5Subject to change Series FK92K
Actuator underneath the ceiling
Actuator above the ceiling
Vertical installation positions
D=ceiling
Horizontaldamperbladeaxle
Filling F1
(as required) Metal anchor M6
adjacent rigid wall
for attachment
FK90K
corner bracket
Fastening to walls and ceilings to be protected
Fasten fire dampers in walls and ceilings so they are pro-
tected from shearing.
This is done in or on the walls and ceilings to be protected.
With FK90K fire dampers, fastening to adjacent walls and
ceilings is also possible.
Filling F1
⇒seepage16
Visible side
Visible side
for attachment by
screw mounting
FK90K corner bracket
Use of FK90K angle bracket
⇒seepages14to33
Fastening to adjacent walls, ceilings, floors
Filling F1
adjacent rigid
ceiling
Metal anchor M6
for attachment
FK90K
corner bracket
Withlargerwall thicknesses,the FK90K
angle brackets on the reverse side are
within the walls. Openings in the wall
mustbesealedusingasuitablematerial;
mineral wool or gypsum joint filler as
applicable.
Horizontal installation positions W=Wall
Damperbladeaxle
FK90K corner bracket
can also be turned through 90° and
mounted on the operation side.
⇒seepage3
Operationside Non-operation
side
horizontal vertical
The release mechanisms and actuators are
alwayslocatedtotheH-sideonthecasing
of the fire dampers.
⇒seepages6and7
Actuator
right
Actuator
above
Actuator
left
Actuator
bottom
FK90K fire dampers
Specialinstallationtypes,installationlocations,hygiene
FK90K fire dampers
•
satisfythehygiene requirementsaccordingtoVDI6022-1,
VDI3803-1,DINEN13779
• do not promote the growth of microorganisms1) (fungi,
bacteria). This reduces the risk of infection for people and
alsothenecessarycleaninganddisinfectionwork!
• are resistant to disinfectants2)
1) The corresponding resistance of the materials to fungi and bacte-
ria was verified by testing the microbial metabolic potential according to
DINENISO846forallmaterialsintheFK90Kfiredampers.
2)
The resistance to disinfectants of the materials in the FK90K fire dampers
was tested with the disinfectant groups of active ingredients alcohol and
quaternary compounds.These disinfectantsare on thelist by the Robert
KochInstitute,andwereusedinaccordancewiththespecificationsinthelist
ofdisinfectantsbytheDisinfectantsCommissionintheGermanAssociation
forAppliedHygiene(VAH).IthasbeenverifiedthatFK90Kfiredamperscan
withstandnormaluseofdisinfectantsanddisinfectionmethods.
UserManual5.1-1(2018-09)6 Subject to change
Series FK92K
FK90K fire dampers
Datasheet(1)
All dimensions in mm
110
Connection profile
for screw connection M6, suitable for
clamp connection and sliding rails
* Two control openings below the release mechanism
Manual release
Casing
Marking for
installation area
260
B
B + 20
20
Outer dimension B + 63
T
40
02 H
02+H
34+HOuter dimension
02
Control openings*
Manual release
Manual lever
Enclosed transmission
in the outer wall
Limit switch
E-OPEN (optional)
Limit switch
E-CLOSED (optional)
Thermal-
mechanical
release mechanism
Operation unit
Control openings*
40
100
260
110 10
55+H
H
Set of gaskets DS
FK90K fire damper with installation subframe
ER5 made of calcium silicate, for sliding ceiling
connections with drops up to 40 mm in metal stud
walls with cladding on both sides.
Studprofiledepthss=50mmto125mm.
Factory-assembled.
⇒seepages22to24,35
Weightallowance+70%inadditiontostandardweight.
⇒see page 28
FK90K fire damper with set of gaskets DS
Forinstallationremotefromrigidwallsandceilingsand
frommetalstudwallswithcladdingonbothsides.
⇒seepages28to33,35
115
260
110
S
30
76
Calcium silicate
installation subframe ER5
86 48+H
34+H
H
User Manual 5.1-1 (2018-09) 7Subject to change Series FK92K
Size-independent excess lengths T U
Thermal-mechanical release mechanism 95 -
ActuatorsM220-10/H,M24-10/H 75 140
ActuatorsM220-9/H,M24-9/H 90 120
All dimensions in mm
Operating range, closing and opening
•FK90Kfiredampersaresuitableforvolumeflowsupto7000m³/h,inflowvelocitiesofupto12m/sandoperating
pressuresofupto1500Pa.
•Theapplicationboundariesmarkedinthenomogramsmustbecompliedwith.⇒ see pages 8 to 11
•FK90Kfiredampersarequick-closing,apartfromtheversionswithelectricactuators.Duetotheflowdynamics,
if the fire damper is triggered at high inflow velocities, this may cause pressure surges accompanied by
multiplication of operating pressures, which in turn may lead to considerable damage to the ventilation and air
conditioningsystem.Additionally,whenshut-offdampersareclosed,thevolumeflowsaredistributedamongother
paralleldampersthatarestillopen.Thismayleadtoexcessivestress,inparticularathighoperatingpressures,
large volume flows and large cross-sections. Electric actuators should be used under such conditions. These
actuatorsclosethefiredampersrelativelyslowlyandinaddition,deactivationofthefancanbetriggeredviathe
OPENlimitswitch.
•Thetorquesoftheelectricactuatorsaresufficientforallfiredampersizes,whichmeanstheycanbefullyopened
whenthefanisinoperation.
•Wheneverpossible,itmustbeensuredthattheinflowsandoutflowsatthefiredampersarethesame.
•F
K90KfiredamperswithelectricactuatorcanbeusedforOPEN/CLOSEDvolumeflowcontrol.
Maximum excess lengthsofmechanicalandelectricalequipment
parts.
Additional space must be
provided for installation,
electrical connections and
maintenance;observethe
cableentrypoints.
Damper blade:Itissituated
inside the fire damper casing
even in the open position.
Thusnoexcesslength!
Toallowaccesstotherelease
mechanisms and actuators
for operational reasons, a
clearance, in addition to "T",
fromadjacentwalls,ceilingsor
other fire dampers of 400 mm
is recommended.
B
B + 20
20
Outer dimension B + 63
40
02 H
02+H
34+HOuter dimension
02
40
110
260
10
14
5
02
2
T
U
FK90K fire dampers
Datasheet(2)
Seal
Sliding rail or
sliding clip
Ventilation duct with
flange for sliding rail
Seal
Sliding rail or
sliding clip
Ventilation duct with
flange for sliding rail
Hexagon screw M6
FK90K
Ventilation duct with flange
Seal
Ventilation duct connections
• withscrews • withslidingrails
• withscrewterminals
Thermal-mechanical release mechanisms are
markedwithV3 or V5. The height-
dependent allocations must not be
changed!
H
<175 V5
≥175 V3
User Manual 5.1-1 (2018-09) 8 Subject to change
Series FK92K
100
150
200
300
500
700
1000
Volume flow V [m³/h]
1500
2000
3000
5000
6000
4000
1 2 3 5 7 10 20 30
100
200 300 400 600 800
Width [mm]
Pressure drop p [Pa]
S
Flow velocity v [m/s]
A
10
2
2.5
4
5
6
7
8
9
11
100
125
150
175
225
250
200
Height H [mm]
Height H [mm]
125
100
150
175
200
225
250
40
7000
12
50 150 250 500 700
FK90K fire dampers Dimensioning(1)
Pressuredropwithventilationductconnectiononbothsides
Free cross-section Afree [m²]
H\W100 150 200 250 300 400 500 600 700 800
100 0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.080
125 0.013 0.019 0.025 0.031 0.038 0.050 0.063 0.075 0.088 0.100
150 0.015 0.023 0.030 0.038 0.045 0.060 0.075 0.090 0.105 0.120
175 0.018 0.026 0.035 0.044 0.053 0.070 0.088 0.105 0.123 0.140
200 0.020 0.030 0.040 0.050 0.060 0.080 0.100 0.120 0.140 0.160
225 0.023 0.034 0.045 0.056 0.068 0.090 0.113 0.135 0.158 0.180
250 0.025 0.038 0.050 0.063 0.075 0.100 0.125 0.150 0.175 0.200
Inflow cross-section AA[m²]
H\W100 150 200 250 300 400 500 600 700 800
100 0.008 0.012 0.016 0.020 0.024 0.032 0.040 0.048 0.056 0.064
125 0.011 0.016 0.021 0.026 0.032 0.042 0.053 0.063 0.074 0.084
150 0.013 0.020 0.026 0.033 0.039 0.052 0.065 0.078 0.091 0.104
175 0.016 0.023 0.031 0.039 0.047 0.062 0.078 0.093 0.109 0.124
200 0.018 0.027 0.036 0.045 0.054 0.072 0.090 0.108 0.126 0.144
225 0.021 0.031 0.041 0.051 0.062 0.082 0.103 0.123 0.144 0.164
250 0.023 0.035 0.046 0.058 0.069 0.092 0.115 0.138 0.161 0.184
Nomenclature ⇒ see page 10
User Manual 5.1-1 (2018-09) 9Subject to change Series FK92K
100
200 300 400 600 800
Width [mm]
Height H [mm]
125
100
150
175
200 225
250
100
150
175
225
250
Height H [mm]
200
1000
2000
3000
5000
7000
40
30
20
50
Sound power level L [dB(A)]
WA
300
500
Volume flow V [m³/h]
150
200
5
6
7
8
4
9
Flow velocity v [m/s]
A
11
10
12
4000
6000
125
700
1500
60
500 700250150
FK90K fire dampers Dimensioning(2)
Soundpowerlevelwithventilationductconnectiononbothsides
Octave mid frequency [Hz]
Relative sound power level
Relative sound power level DL
Example:
V = 1500 m³/h
B = 400 mm
H = 225 mm
AA = 0.09 m²
Afree = 0.082 m²
Dps = 2.7 Pa
vA = 4.6 m/s
LWA = 27 dB(A)
Sound power level LW-Octfortheoctavemidfrequencies
f [Hz] 63 125 250 500 1000 2000 4000 8000
LWA [dB(A)] 27 27 27 27 27 27 27 27
DL
4.6m/s
[dB] 11 9 3 -2 -8 -15 -24 -28
LW-Oct [dB] 38 36 30 25 19 12 3 -
FlowvelocityvA[m/s]
v
A
[m/s]
User Manual 5.1-1 (2018-09) 10 Subject to change
Series FK92K
FK90K fire dampers Dimensioning(3)
Pressuredropwithventilationductconnectionononeside,andfreeincomingflowwithprotectivegrille
300
500
1000
Volume flow V [m³/h]
700
2000
3000
4000
5000
1 2 3 5 10 20 30
100
200 300 400 600 800
Width [mm]
Pressure drop p [Pa]
S
Flow velocity v [m/s]
A
2
2.5
4
5
6
7
8
9
100
125
150
150
225 250
Height H [mm]
Height H [mm]
125
100
150
175
200
225
250
100
200
3
1.5
175
440
150
50 500 700250150
H\W100 150 200 250 300 400 500 600 700 800
100 0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.080
125 0.013 0.019 0.025 0.031 0.038 0.050 0.063 0.075 0.088 0.100
150 0.015 0.023 0.030 0.038 0.045 0.060 0.075 0.090 0.105 0.120
175 0.018 0.026 0.035 0.044 0.053 0.070 0.088 0.105 0.123 0.140
200 0.020 0.030 0.040 0.050 0.060 0.080 0.100 0.120 0.140 0.160
225 0.023 0.034 0.045 0.056 0.068 0.090 0.113 0.135 0.158 0.180
250 0.025 0.038 0.050 0.063 0.075 0.100 0.125 0.150 0.175 0.200
Inflow cross-section AA[m²]
H\W100 150 200 250 300 400 500 600 700 800
100 0.008 0.012 0.016 0.020 0.024 0.032 0.040 0.048 0.056 0.064
125 0.010 0.015 0.020 0.025 0.030 0.040 0.050 0.060 0.070 0.080
150 0.012 0.018 0.024 0.030 0.036 0.048 0.060 0.072 0.084 0.096
175 0.014 0.021 0.028 0.035 0.042 0.056 0.070 0.083 0.098 0.112
200 0.016 0.024 0.032 0.040 0.048 0.064 0.080 0.095 0.111 0.128
225 0.018 0.027 0.036 0.045 0.054 0.072 0.090 0.107 0.125 0.143
250 0.020 0.030 0.040 0.050 0.060 0.080 0.100 0.119 0.139 0.159
Free cross-section [m²] including protective grille
Nomenclature
Exhaust
air
B [mm] Width
H [mm] Height
AA [m²] Inflowcross-sectionBxH
Afree [m²] Free cross-section
V [m³/h] Volumeflow
vA [m/s] Flowvelocityininflowcross-section
(inflowvelocity)
Dps [Pa] Staticpressuredrop
LWA [dB(A)] A-weighted,area-correctedsoundpower
level
LW-Oct [dB] Octavesoundpowerlevel
LW-Oct=LWA +DL
DL [dB] RelativesoundpowerleveltoLWA
f [Hz] Octavemidfrequency
User Manual 5.1-1 (2018-09) 11Subject to change Series FK92K
FK90K fire dampers Dimensioning(4)
Soundpowerlevelwithventilationductconnectionononeside,andfreeincomingflowwithprotectivegrille
200 300 400 600 800
Width [mm]
Height H [mm]
125
100
150
175
200
225
250
250
225 200
175
125
100
Height H [mm]
150
1000
2000
3000
4000
5000
Sound power level L [dB(A)]
WA
300
500
Volume flow V [m³/h]
150
200
5
6
7
8
2.5
4
9
Flow velocity v [m/s]
A
11
10
12
700
100
3
150 250 500 7000402 060503
Octave mid frequency [Hz]
Relative sound power level
Example:
V = 500 m³/h
B = 200 mm
H = 225 mm
AA = 0.045 m²
Afree = 0.041 m²,or0.036m²withprotectivegrille
Dps = 4.9 Pa
vA = 3.1 m/s
LWA = 22 dB(A)
Sound power level LW-Octfortheoctavemidfrequencies
f [Hz] 63 125 250 500 1000 2000 4000 8000
LWA [dB(A)] 22 22 22 22 22 22 22 22
DL
3.1m/s
[dB] 16 6 2 -2 -6 -18 -25 -20
LW-Oct [dB] 38 28 24 20 16 4 - 2
Relative sound power level DL
FlowvelocityvA[m/s]
v
A
[m/s]
User Manual 5.1-1 (2018-09) 12 Subject to change
Series FK92K
FK90K fire dampers Fast selection (1)
Ventilation duct connection on both sides
LWA=40[dB(A)] LWA=25[dB(A)]LWA=30[dB(A)]LWA=35[dB(A)]LWA=45[dB(A)]LWA=50[dB(A)]
100 110 (4) 170 (3) 220 (3) 280 (3) 340 (3) 440 (3) 550 (2) 670 (2) 770 (2) 880 (2)
125 150 (4) 220 (3) 290 (3) 370 (3) 440 (3) 580 (2) 730 (2) 870 (2) 1010(2) 1150(2)
150 180 (3) 270 (3) 360 (3) 450 (3) 540 (2) 720 (2) 900 (2) 1070(2) 1250(2) 1430(2)
175 220 (3) 330 (3) 430 (3) 540 (2) 640 (2) 850 (2) 1060(2) 1270(2) 1490(2) 1690(2)
200 250 (3) 380 (3) 500 (2) 620 (2) 750 (2) 990 (2) 1230(2) 1480(2) 1720(2) 1960(2)
225 290 (3) 430 (3) 570 (2) 710 (2) 850 (2) 1130 (2) 1410(2) 1680(2) 1960(2) 2230(2)
250 320 (3) 480 (3) 640 (2) 790 (2) 950 (2) 1260 (2) 1570(2) 1880(2) 2190(2) 2500(2)
H\B 100 150 200 250 300 400 500 600 700 800
LWA=20[dB(A)]
Volume flow V [m³/h] (pressure drop DpS[Pa]) for specified sound power level LWA [dB(A)]
100 140 (6) 210 (5) 280 (5) 350 (4) 420 (4) 550 (4) 690 (3) 830 (3) 960 (3) 1100(3)
125 180 (5) 270 (4) 370 (4) 460 (4) 550 (4) 720 (3) 900 (3) 1080(3) 1260(3) 1430(3)
150 230 (5) 340 (4) 450 (4) 560 (4) 670 (3) 890 (3) 1110(3) 1330(3) 1550(3) 1770(3)
175 270 (5) 400 (4) 540 (4) 670 (4) 800 (3) 1060 (3) 1320(3) 1580(3) 1840(3) 2100(3)
200 310 (4) 470 (4) 620 (4) 770 (3) 930 (3) 1230 (3) 1530(3) 1840(3) 2140(3) 2440(2)
225 360 (4) 530 (4) 710 (3) 880 (3) 1050 (3) 1400 (3) 1750(3) 2080(3) 2430(2) 2770(2)
250 400 (4) 600 (4) 790 (3) 990 (3) 1180 (3) 1570 (3) 1950(3) 2340(2) 2720(2) 3100(2)
H/B 100 150 200 250 300 400 500 600 700 800
100 180 (9) 260 (7) 350 (7) 430 (6) 520 (6) 690 (5) 860 (5) 1030(5) 1190(5) 1360(4)
125 230 (8) 340 (7) 450 (6) 570 (6) 680 (6) 900 (5) 1120(5) 1340(4) 1560(4) 1780(4)
150 280 (7) 420 (6) 560 (6) 700 (5) 840 (5) 1110 (5) 1380(4) 1660(4) 1930(4) 2200(4)
175 340 (7) 500 (6) 670 (6) 830 (5) 990 (5) 1320 (4) 1640(4) 1970(4) 2290(4) 2620(4)
200 390 (7) 580 (6) 770 (5) 960 (5) 1150 (5) 1530 (4) 1900(4) 2280(4) 2660(4) 3030(3)
225 440 (6) 660 (6) 880 (5) 1090 (5) 1310 (4) 1740 (4) 2170(4) 2600(4) 3020(3) 3440(3)
250 500 (6) 740 (5) 980 (5) 1230 (5) 1470 (4) 1950 (4) 2430(4) 2910(4) 3380(3) 3860(3)
H/B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H/B 100 150 200 250 300 400 500 600 700 800
H/B 100 150 200 250 300 400 500 600 700 800
H/B 100 150 200 250 300 400 500 600 700 800
100 220 (13) 320 (11) 430 (10) 540 (10) 640 (9) 850 (8) 1060(8) 1270(7) 1480(7) 1690(7)
125 280 (11) 420 (10) 560 (9) 700 (9) 840 (8) 1120 (8) 1390(7) 1670(7) 1940(6) 2210(6)
150 350 (11) 520 (9) 700 (9) 870 (8) 1040 (8) 1380 (7) 1720(7) 2060(6) 2390(6) 2730(6)
175 420 (10) 620 (9) 830 (8) 1030 (8) 1230 (7) 1640 (7) 2040(6) 2450(6) 2850(6) 3250(5)
200 480 (10) 720 (9) 960 (8) 1200 (7) 1430 (7) 1900 (6) 2370(6) 2830(6) 3300(5) 3760(5)
225 550 (9) 820 (8) 1090 (8) 1360 (7) 1630 (7) 2160 (6) 2690(6) 3220(5) 3750(5) 4280(5)
250 620 (9) 920 (8) 1220 (7) 1520 (7) 1820 (6) 2420 (6) 3020(5) 3610(5) 4200(5) 4800(5)
100 270 (19) 400 (17) 540 (16) 670 (14) 800 (14) 1060(12) 1320(11) 1580(11) 1840(10) 2100(10)
125 350 (17) 530 (16) 700 (14) 870 (13) 1040(12) 1390(11) 1730(11) 2070(10) 2410(9) 2750(9)
150 440 (17) 650 (14) 870 (13) 1080(12) 1290(12) 1710(11) 2130(10) 2550(9) 2970(9) 3390(8)
175 520 (16) 770 (14) 1030(12) 1280(12) 1530(11) 2040(10) 2540(9) 3040(9) 3540(8) 4040(8)
200 600 (15) 900 (13) 1190(12) 1480(11) 1780(10) 2360 (9) 2940(9) 3520(8) 4100(8) 4680(8)
225 680 (14) 1020(12) 1350(11) 1690(11) 2020(10) 2680 (9) 3350(9) 4000(8) 4660(8) 5310(7)
250 770 (14) 1140(12) 1520(11) 1890(10) 2260(10) 3010 (9) 3740(8) 4480(8) 5220(7) 5950(7)
100 340 (30) 500 (26) 670 (24) 830 (22) 990 (20) 1320(19) 1640(17) 1970(16) 2290(16) 2610(15)
125 440 (27) 660 (24) 870 (22) 1080(20) 1300(19) 1720(17) 2150(16) 2570(15) 2990(14) 3420(14)
150 540 (25) 810 (22) 1070(20) 1340(19) 1600(18) 2130(16) 2650(15) 3180(14) 3700(13) 4220(13)
175 650 (24) 960 (21) 1280(19) 1590(18) 1910(17) 2530(15) 3150(14) 3780(13) 4400(13) 5010(12)
200 750 (23) 1110(20) 1480(18) 1840(17) 2210(16) 2930(14) 3650(13) 4380(13) 5100(12) 5810(11)
225 850 (22) 1270(19) 1680(17) 2100(16) 2510(15) 3330(14) 4160(13) 4970(12) 5790(12) 6600(11)
250 950 (21) 1420(18) 1890(17) 2350(15) 2810(15) 3740(13) 4650(12) 5570(12) 6490(11)
100 420 (46) 620 (39) 830 (36) 1030(33) 1230(31) 1640(29) 2040(27) 2440(25) 2850(24) 3250(23)
125 1350(31) 1610(29) 2140(26) 2670(24) 3190(23) 3720(22) 4240(21)
150
175
200
225
250
UserManual5.1-1(2018-09)13Subject to change Series FK92K
LWA=40[dB(A)] LWA=25[dB(A)]LWA=30[dB(A)]LWA=35[dB(A)]LWA=45[dB(A)]
LWA=50[dB(A)] LWA=20[dB(A)]
Volume flow V [m³/h] (pressure drop DpS[Pa]) for specified sound power level LWA [dB(A)]
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
H\B 100 150 200 250 300 400 500 600 700 800
100 130 (7) 180 (6) 230 (6) 280 (5) 330 (5) 410 (5) 500 (4) 580 (4) 670 (4) 740 (4)
125 160 (7) 220 (6) 280 (5) 340 (5) 390 (5) 500 (4) 610 (4) 700 (4) 800 (4) 900 (4)
150 180 (6) 260 (6) 330 (5) 390 (5) 460 (5) 580 (4) 700 (4) 820 (4) 940 (4) 1050(3)
175 210 (6) 290 (5) 370 (5) 450 (5) 520 (4) 670 (4) 800 (4) 940 (4) 1070(3) 1190(3)
200 230 (6) 330 (5) 410 (5) 500 (4) 580 (4) 740 (4) 900 (4) 1050(3) 1190(3) 1340(3)
225 260 (6) 360 (5) 460 (5) 550 (4) 640 (4) 820 (4) 990 (4) 1160(3) 1320(3) 1480(3)
250 280 (5) 390 (5) 500 (4) 610 (4) 700 (4) 900 (4) 1080(3) 1260(3) 1440(3) 1610(3)
100 160 (11) 220 (9) 280 (8) 340 (8) 390 (7) 500 (7) 600 (6) 710 (6) 800 (6) 900 (5)
125 190 (10) 260 (8) 340 (8) 410 (7) 470 (7) 600 (6) 730 (6) 850 (6) 970 (5) 1080(5)
150 220 (9) 310 (8) 390 (7) 470 (7) 550 (6) 710 (6) 850 (6) 990 (5) 1130(5) 1270(5)
175 250 (9) 350 (8) 450 (7) 540 (6) 630 (6) 800 (6) 970 (5) 1130(5) 1290(5) 1440(5)
200 280 (8) 390 (7) 500 (7) 600 (6) 710 (6) 900 (5) 1080(5) 1270(5) 1440(5) 1610(4)
225 310 (8) 430 (7) 550 (6) 670 (6) 780 (6) 990 (5) 1200(5) 1400(5) 1590(4) 1780(4)
250 340 (8) 470 (7) 600 (6) 730 (6) 850 (6) 1080 (5) 1310(5) 1530(5) 1740(4) 1940(4)
100 190 (15) 260 (13) 340 (12) 410 (11) 480 (11) 600 (9) 730 (9) 850 (8) 970 (8) 1090(8)
125 230 (14) 320 (12) 410 (11) 490 (10) 570 (10) 730 (9) 880 (8) 1030(8) 1170(7) 1310(7)
150 260 (13) 370 (11) 480 (11) 570 (10) 670 (9) 850 (8) 1030(8) 1200(7) 1360(7) 1530(7)
175 300 (12) 420 (11) 540 (10) 650 (9) 760 (9) 970 (8) 1170(7) 1360(7) 1560(7) 1740(6)
200 340 (12) 480 (11) 600 (9) 730 (9) 850 (8) 1090 (8) 1310(7) 1530(7) 1740(6) 1950(6)
225 370 (11) 520 (10) 670 (9) 810 (9) 940 (8) 1200 (7) 1450(7) 1690(7) 1920(6) 2150(6)
250 410 (11) 570 (10) 730 (9) 880 (8) 1030 (8) 1310 (7) 1580(7) 1850(6) 2100(6) 2350(6)
100 230 (22) 320 (19) 410 (17) 490 (16) 570 (15) 730 (14) 880(13) 1030(12) 1170(11) 1310(11)
125 270 (19) 390 (18) 490 (16) 590 (15) 690 (14) 880 (13) 1070(12) 1240(11) 1410(11) 1580(10)
150 320 (19) 450 (16) 570 (15) 690 (14) 810 (13) 1030(12) 1240(11) 1450(11) 1650(10) 1850(10)
175 360 (17) 510 (15) 650 (14) 790 (13) 920 (13) 1170(11) 1410(11) 1650(10) 1880(10) 2100(9)
200 410 (17) 570 (15) 730 (14) 880 (13) 1030(12) 1310(11) 1580(10) 1850(10) 2100(9) 2360(9)
225 450 (16) 630 (14) 810 (13) 980 (12) 1140(12) 1450(11) 1750(10) 2040(9) 2320(9) 2600(9)
250 490 (16) 690 (14) 880 (13) 1070(12) 1240(11) 1580(10) 1910(10) 2230(9) 2540(9) 2840(8)
100 270 (30) 390 (28) 490 (24) 590 (23) 690 (21) 880 (20) 1070(18) 1240(17) 1420(17) 1590(16)
125 330 (28) 470 (26) 590 (23) 720 (22) 840 (20) 1070(18) 1290(17) 1500(16) 1710(15) 1920(15)
150 390 (28) 540 (23) 690 (21) 840 (20) 980 (19) 1240(17) 1500(16) 1750(15) 2000(15) 2230(14)
175 440 (26) 620 (23) 790 (21) 950 (19) 1110(18) 1420(17) 1710(15) 2000(15) 2270(14) 2540(13)
200 490 (24) 690 (21) 880 (20) 1070(18) 1240(17) 1590(16) 1920(15) 2230(14) 2540(13) 2850(13)
225 540 (23) 770 (21) 980 (19) 1180(18) 1370(17) 1750(15) 2110(14) 2460(13) 2810(13) 3140(12)
250 590 (23) 840 (20) 1070(18) 1290(17) 1500(16) 1920(15) 2310(14) 2690(13) 3070(12) 3430(12)
100 330 (44) 470 (40) 600 (36) 720 (33) 840 (32) 1070(29) 1290(27) 1500(25) 1710(24) 1920(23)
125 400 (42) 560 (36) 720 (33) 870 (31) 1010(29) 1290(27) 1560(25) 1810(23) 2070(22) 2310(21)
150 470 (40) 660 (35) 840 (32) 1010(29) 1180(28) 1500(25) 1810(23) 2120(22) 2410(21) 2700(20)
175 530 (37) 750 (33) 950 (30) 1150(28) 1340(26) 1710(24) 2070(22) 2410(21) 2740(20) 3070(19)
200 600 (36) 840 (32) 1070(29) 1290(27) 1500(25) 1920(23) 2310(21) 2700(20) 3070(19) 3440(18)
225 660 (35) 930 (31) 1180(28) 1420(25) 1660(24) 2120(22) 2560(21) 2980(19) 3390(18) 3800(18)
250 720 (33) 1010(29) 1290(27) 1560(25) 1810(23) 2310(21) 2790(20) 3260(19) 3710(18) 4150(17)
100 400 (65) 560 (56) 720 (52) 870 (49) 1010(45) 1290(42) 1560(39) 1820(37) 2070(35) 2320(33)
125 480 (60) 680 (53) 870 (49) 1050(45) 1220(42) 1560(39) 1880(36) 2190(34) 2500(32) 2790(31)
150 560 (56) 790 (50) 1010(45) 1220(42) 1430(40) 1820(37) 2190(34) 2560(32) 2910(30) 3260(29)
175 640 (54) 900 (47) 1150(43) 1390(40) 1620(38) 2070(35) 2500(32) 2910(30) 3320(29) 3710(28)
200 720 (52) 1010(45) 1290(42) 1560(39) 1820(37) 2320(33) 2790(31) 3260(29) 3710(28) 4150(26)
225 790 (50) 1120(44) 1430(40) 1720(37) 2010(35) 2560(32) 3090(30) 3600(28) 4100(27) 4590(26)
250 870 (49) 1220(42) 1560(39) 1880(36) 2190(34) 2790(31) 3380(29) 3940(27) 4480(26) 5020(25)
FK90K fire dampers Fast selection (2)
Withventilationductconnectionononeside,andfreeincomingflowwithprotectivegrille
User Manual 5.1-1 (2018-09) 14 Subject to change
Series FK92K
FK90K fire dampers
Installationinrigidwallsandceilings(1)
Installation with mortar or mineral wool
Construction types: Therigidwallsandceilingscanbemadeofconcrete,lightweightconcrete,porousconcrete
(aerated concrete) or plaster. They can be a masonry or wallboard construction and must have a bulk density of
≥450kg/m³.Wallsmayalsobeconfiguredasfirewalls,
shaftwalls,shaftsorducts.
The minimum thicknesses W, D [mm] shownopposite
arerequiredtoinstalltheFK90Kfiredampers:
Fire resistance period in minutes 30
60
30
60
90
Rigidwalls 70 95
Rigid ceilings - 100
Installation openings and filling F0
Filling gap "s" completelyandcontinuouslywithfillings
F0. Aminimumclearwidthisrecommendedfor:
• Installationwithmortar
bxh=(B+110mm)x(H+90mm)
Thens=25mmascontinuousgap.
Withmortar(wetinstallation)ofgroupIIorIIIaccord-
ing to DIN 1053 or classes M2.5, M5, M10 or M20
accordingtoEN998-2,orwiththecorrespondingfire
protectionmortarorgypsummortar.
• Installationwithmineral wool
bxh=(B+100mm)x(H+80mm)
Thens=20mmascontinuousgap.
Withmineralwool(dryinstallationwithoutmortaronly
if s ≤20mm)asapprox.100-mm-wideplatestripor
asmineralwoolinfill,eachwithadensityof≥80kg/
m³andmeltingpointof≥1000°C.
Filling F0
4 pieces
FK90K corner bracket
as wall anchor
4 pieces
FK90K corner bracket
as shear protection
alternative to the
wall anchor
Filling F0
Filling F0
FK90K
corner bracket
for attachment
and shear
protection
Installation with mortar
Wet installation
Installation with mineral wool
Dryinstallation
A
specificinstallationopeningisnotrequired
whenbuildingthewallorceiling!
FK90Kfiredampers,connectedtoventilationductsmadeofmetal,butwithoutflexibleconnectors,mustbeinstalled
sothattheyareprotectedfromshearing.Wheninstallingwithmortar,thefiredampercasingmustbindpermanently
withthefilling;4FK90K corner brackets canbeusedaswallanchors.Alternatively,FK90K corner brackets are
suitableasscrewfastenings.Thiscanbeperformedonwallswhicharetobeprotectedoronadjacentwallsorceil-
ingswithrigidconstructiontypes.⇒alsoseepages3,5and16
User Manual 5.1-1 (2018-09) 15Subject to change Series FK92K
FK90K fire dampers
Installationinrigidwallsandceilings(2)
Filling F0
Filling F0
Filling F1
Filling F1
To seal sliding connections
underneath ceilings, soft mineral
wool must be used such that
the required density of 80 kg/m3
is only achieved in the
compressed set state.
Filling F0
Filling F0
Settlement joint possible
s s
W, D
ss
FK90K corner bracket
FK90K corner bracket
Filling F0
Screw fastening
FK90K
corner bracket
as anchor
when using
filling F0 with
mortar as
alternative to
attachment
and shear
protection
for attachment and shear
protection (as required)
FK90K
corner bracket
with mineral wool
Installation in corners and directly on walls and ceilings
“Partialmortaring”
Installation side-by-side
Installation suspended
in ceilings
Installation in ceilings
Installation in walls
Installation in hard-to-reach installation openings For filling the gap "s"
•Filling F0 ⇒ see page 14
Note:FillingsF0madeofmineral
woolincornersanddirectly
againstwallsandceilingsis
permittedwith"partialmortaring"
forgapswiths≤50 mm.
•Filling F1 ⇒seepage16
If FK90K fire dampers are fastened
incornersanddirectlyunderceilings
on adjacent walls and/or ceilings,
ventilation ducts made of metal can
also be connected without flexible
connectors. However, the filling F0,
if made of mineral wool, must be
replacedwithfillingF1.
⇒seepages5,16and36
UserManual5.1-1(2018-09)16 Subject to change
Series FK92K
•Upto3unitsstackedaboveoneanotheron
rigid ceilings. *)
FK90K fire dampers
Multipleinstallationinwallswithfixingstoadjacentrigidwallsandceilings
Filling F1
Filling F1
Metal anchor M6
FK90K corner bracket
FK90K cross connectors
FK90K ceiling bracket
for screw mounting
Filling F1
FK90K connectorFK90K bracket
for assembly for assembly
Filling
Filling
(according to requirements)
•Upto3unitsstackedaboveoneanotheron
rigidwalls.*)
• Upto3unitsinthecornersofrigidwalls
and rigid ceilings.
*)
•Up to 3 units with the same width stacked
above one another in pairs on rigid ceilings.
For this type of multiple installation FK90K fire dampers generally must be
connectedwithflexibleconnectors.⇒seepage34
FK90Kfire dampers onadjacent walls or ceilings mustlie flush against the
surface.Unevennessmustbesmoothedoutwithplasterorcompensatedfor
withfillingsF1.
Fillings F1
•are approx. 6 mm thick resilient, non-combustible mineral sealants with a
melting point of ≥1000°C,e.g.100-mm-widestripsmadeofcalcium-mag-
nesium silicate (⇒ see page 36). Mineral wool can also be used and must
haveadensityof≥80kg/m³whencompressed.
•must be used between FK90K fire dampers when installing multiple fire
dampers or for assembly with FK90K connectors and to act as a seal
betweentheFK90Kfiredampersandadjacentceilings.
•canbeusedascompensatingelementsand/ortoprovideasealbetween
FK90Kfiredampersandadjacentwalls,ifthewallsarenotsufficientlylevel.
Filling F1 ⇒seepage36; fillings for other gap ⇒seepages14to33
Each FK90K fire damper is supplied with one pack containing 4 x FK90K
corner brackets. Additional FK90K angle brackets, FK90K connectors,
FK90K cross connectors and FK90K ceiling brackets must be ordered
separately.⇒seepage36
*) shownwithhorizontaldamperbladeaxles.The
sameprocedurebasicallyappliesforinstallation
withverticaldamperbladeaxles.⇒see page 5
Filling
Filling
(according to requirements)
Filling
Filling
Filling
OuterdimensionsH1,H2,H3, W1, W2⇒seepage6
LF1,LH,LB:LengthsofF1infillstrips
User Manual 5.1-1 (2018-09) 17Subject to change Series FK92K
Wall types
The walls, shaft walls, facings, fire walls, etc. must be
produced according to the manufacturer’s specifications
or technical standards. General building authority test
certificates(AbP)mustbeobservedinGermany.
Considerationmustbegiventospecificationsfordesign,
fire resistance period and fire safety classification,
specifiedwallwidths,wallheightsandwallthicknesses,
and dimensionings for studding and cladding.
The wall types and sub-structures require cross-sec-
tions A-Awithasuitabledesign.
⇒ seepages19to26
•Flexible walls of the “metal stud wall” type can be
clad on one side or both sides. The cladding may be
single-layerormulti-layer,dependingonthefireresist-
ance period.
In general, shaft walls and facings should be clad on
one side. Shaft walls without metal studs should only
be fastened at the side. ⇒seepages25and26
Firewallsandsafetypartitionwallsaremadeofmetal
studswithseverallayersofcladdingonbothsidesand
maycontainsheetmetalinlays.⇒see page 27
•Metal stud walls can be produced with or without
mineralwoolbetweenthemetalstuds.
•Cladding made of DF type gypsum boards according
to EN 520 or equivalent cladding material (fire-resist-
ant plasterboards, cement-bound boards, calcium
silicateboards,etc.)mustbefixedinamannerappro-
priatetothewallinquestion.
In the perimeter area of the FK90K fire dampers,
cladding must be secured with drywall screws of a
suitable length and a diameterof≥3.9mmatspacings
of≤200mmor≤150mm.⇒ seepages19to32
• Profiles for metal stud walls are described by
DIN 18182 and EN 14195, and constructions by
DIN18183.
• FK90K fire dampers may be installed in metal stud
wallswithup to 1000 mm metal stud spacing (span),
andhavebeentestedaccordingly.
• The required bay rails and stiffeners should
be used for installing FK90K fire dampers in
metal stud walls so as to produce circumferen-
tial frames. Intersections must be connected
with two blind rivets made from steel with diam-
etersof 4 to 5 mm or with drywall screws with
diametersof≥3.5mmandlengthsof≥10mm.
Two-way prefixing may also be performed by means
ofclinching(crimping),asistypicalindryconstruction.
Twojointpointsshouldbeused.
In addition, the claddings must be connected to the
metalframeworkattheintersectionsusingdouble-con-
nectedscrewfastenings.
Thefollowing minimum thickness W [mm] isrequired
forinstallingFK90Kfiredampers:
Detailsaccordingtowalltypes:
⇒ seepages19to33
•Gap "s"oninstallationopeningsmustbefilled:
•
Gap s ≤ 20 mmmustbefilledwithfillings F2 made of
strips of non-combustible mineral wool (also mineral
woolinfill),approx.100mmwide,≥80kg/m³density,
≥ 1000°C melting point, or alternatively using mats
made of calcium-magnesium silicate (e.g. filling F1).
Clearwidthofinstallation openings:
b x h = (B + 100 - 30 mm) x (H + 80 - 30 mm)
•Butt joints s ≤ 2 mm to 5 mm must be sealed or filled
with gypsum joint filler. This installation is possible in
wallswiththicknessesW≤115mm. Clear width of
installation openings:
b x h = (B + 67 mm) x (H + 47 mm)
FK90K fire dampers
Installationinmetalstudwalls(1a)General
Fire resistance period in minutes 30
60
30
60
90
Metalstudwallswith
cladding on both
sides
≥1-layercladding 70 -
≥2-layercladding - 95
Shaftwallsmade
fromwallboards,at
least2layers
withmetalstuds - 90
withoutmetalstuds - 40
2-way
crimping
2 drywall screws
3.5 mm (both sides)
User Manual 5.1-1 (2018-09) 18 Subject to change
Series FK92K
FK90K fire dampers
Installationinmetalstudwalls(1b)Metalframework
Installation openings for FK90K fire dampers require cut-outs in the cladding. In the metal studs, trimmers or
specialarrangementsmaybenecessary.
Sub-structuresofmetalstudwallsconsistofCWprofilesassupports.Theseshouldbesetonthefloorandontheceil-
inginUWprofilesfastenedtothefloorandceiling.Supportsadjoiningrigidwallsarethenattachedtotheseprofiles.
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
fillingsorthe fire damper casingabut against these profiles.Exceptions are possible withinstallation openings which
have an accurate fit.
Severed supports will require trimmers which can simultaneously serve as the frame for the installation openings.
Trimmersareneededforinstallationopeningswithwidthslargerthanthespans.
Butt joints s
≤
2
up to
5
mm
/ Only if W
≤
115
mm
Sealingorfillingwithgypsumjointfiller
Gap s
≤
20
mm
FillingwithfillingF2(mineralwool)
Span
Double
installation
Span Span Span Span Span Span Span Span Span Span
Examples of installation openings
Dependingonthetypeofwall,suitableconnectionscanbeusedto interrupt profiles on ceilings and floors for
the purpose of installing FK90K fire dampers. ⇒seepages19to21and26
For H trimmers with horizontal pro-
filesaboveandbelowtheinstallation
opening and with vertical profiles on
therightandleftedge,non-adjacentverticalprofilesmustbe≥
500mmlonger.Clad-
dingfortheseprofilesmustbescrewedonwithspacingof≤
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
cutandnewopeningscreated.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
User Manual 5.1-1 (2018-09) 19Subject to change Series FK92K
All dimensions in
[mm]
Single or multi-layer
wall cladding
Reveal made of
wall-building
materials
corner
bracket
Operation side
FK90K casing Filling F2 Ventilation duct,
extension, flexible
connector
FK90K fire dampers
Installationinmetalstudwalls(2a)
Operation side
FK90K casing Filling F2 Ventilation duct,
extension, flexible
connector
Single or multi-layer
wall cladding
corner
bracket
Single or multi-layer
Filling F2
Operation side
corner
bracket
FK90K casing
wall cladding
Single or multi-layer
wall cladding
Operation side
FK90K casing Filling F2 Ventilation duct,
extension, flexible
connector
corner
bracket
Drywall screws
“Thickwalls”
“Double-studwalls”
Single or multi-layer
Reveal made of
wall-building materials
wall cladding
corner
bracket
Operation side
FK90K casing Filling F2
FK90K casing
FK90K casing
Operation side
Operation side
Filling F2
corner
bracket
Operation side
FK90K casing
Filling F2
FK90K
corner bracket
Installation with short spacings
Minimumdistancebetweenbayrailsorstuds
Connectionstorigidwalls,ceilings,
floors
Operation side
FK90K casing Filling F2
Gap s ≤ 20 mm must be
continuouslysealedwithfillingsF2
(mineralwool).
Cross-sections A - A
Wall thicknesses W ≤ 115 mm
Wall thicknesses W >115 mm
Ideallytobeconstructedwithreveal!
“Installationwalls”
Installation principle
• Installationlocations,shut-offdamper
bladeaxispositions,actuatorarrange-
mentsinwalls(W) ⇒see page 5
• Framework-constructionsand
cross-sectionsA-Afordifferentwall
types
⇒also see pages 20 to 21
•Filling F1 ⇒seepage16
•Filling F2 ⇒ see page 17
• Dimensionsofinstallationopenings
⇒see page 17
Fillgapatrearbetweenframeworkandventilationduct(extension,flexible
connector)withmineralwoolasrequired.
FK90K connector
for assembly
Filling F1
Createoneunitbyscrewingtwofiredamperstogetherusing4FK90Kbracketsor
FK90K connectors and install both together.
⇒also see page
16
Double installationside-by-side
Filling F1
FK90K bracket
for assembly
Installation with mineral wool
Typesofmetalstudwallswithcladdingonbothsides⇒see pages 17 and 18
The minimum
thicknesses W [mm]
shownoppositeare
requiredforinstalling
the FK90K fire
dampers:
Fire resistance period in minutes 30
60
30
60
90
Metalstudwallswith
cladding on both
sides
≥1-layercladding 70 -
≥2-layercladding - 95
User Manual 5.1-1 (2018-09) 20 Subject to change
Series FK92K
FK90K fire dampers
Installationinmetalstudwalls(2b)
Drywall screws
Connection profile
Bay rail
Clear installation opening
Side profile (as required)
Bay rail
Stud profile
Drywall screw Ø 3.9
Filling F2
Connection profile
alternative
Span
FK90K
corner bracket
Connection profile
Stud profile
Stud profile
Bay rail
Wall / ceiling
Drywall screws
Drywall screws
Filling F2
Filling F2
FK90K corner bracket
Filling F1
(as required)
Connection profile
Side profile
Stud profile
Bay rail
Wall / ceiling
Drywall screws
Metal anchor M6
FK90K corner bracket
Hexagon screw M6
Filling F2
Filling F2
Hexagon screw
Metal anchor M6
Filling F1
Filling F1
FK90K corner bracket
(as required)
(as required)
•Fixing to the wall to be protected
Connectventilationductsusingflexibleconnectors.
⇒seepage34
•Fixing to adjacent rigid wall and ceiling
Ventilation ducts must not beconnectedusingflexibleconnectors
.
⇒seepage34
FK90K fire dampers must whenever possible lie flush against
adjacentwallsorceilings;applyalevellingplastercoatbefore-
handifnecessary.
To fill the gap "s" ⇒seepages16and17
•Filling F1 ⇒seepage16
•Filling F2 ⇒ see page 17
The installation details for the cross-sections A-A
vary,dependingonthewalltypeandconnection.
⇒see pages 19 and 21
Detail X: When securing using 2-way crimping,
the claddings must be also connected to the metal
studsviadouble-connectedscrewfasteningsatthe
intersections.
⇒see page 17
*) Ifrevealsarepresent,theirthicknessesmustbeaddedtothe
dimension of the installation opening.
Connection to ceilings and corners of adjacent walls
and ceilings with solid construction
All dimensions in mm
Maximum
shortening
FK90K corner brackets
can be shortened on site
bymax.34mm
*)
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