Wildeboer FR90 User manual

User Manual 5.3 (2021-06) 1Subject to change Series FR92
FR90 re dampers
■ Maintenance-free: The complete enclosure of the operation unit, release
mechanism and release element means that there is no need for any
function-preserving cleaning, recurrent lubrication or adjustment
■ Functional test: Straightforward opening and closing with external
actuation by local position indicators or by remote control
■ Sizes ∅ 100 mm to ∅ 800 mm
■ Fire classications: EI 30/60/90/120 (ve- ho, i ↔ o) S C10000
■ Hygiene certicate from Hygiene-Institut des Ruhrgebiets
The German original version of this document shall prevail

User Manual 5.3 (2021-06) 2 Subject to change
Series FR92
FR90 re dampers
Features and characteristics
Single-piece sheet steel casing
galvanized - longitudinal seam welded - extremely
robust airtight, smoke-proof
Leak tightness
class C according to EN 1751
Option: Epoxy resin powder coating
Break-resistant
damper blade
with elastomer lip seal
airtight, leak tightness class 3
according to EN 1751
Options:
• Metal cover in galvanized steel
• Metal cover made of 1.4301
stainless steel
Large free cross-section
Maximum volume ows
Minimum pressure drop
Extremely low sound power level
Nominal sizes [mm]
DN 100 to DN 800
Thermal-mechanical
Release mechanism
for manual single-handed operation
Option:
Electric actuators, also explosion-protected
Release mechanism and
axis of the damper blade
rotatable 360°
Two control openings (inspection openings)
for viewing both sides of the damper blade
Fully enclosed:
• Operation unit
• Release mechanism
• Release element
Lip seals
All-round enclosed
thermal release elements 70°C or 95°C
Option:
Corrosion-resistant release element 70°C

User Manual 5.3 (2021-06) 3Subject to change Series FR92
FR90 re dampers
Description
All-round single-piece galvanized sheet steel casing.
Casing tightness class C according to EN 1751.
Moulded push-t connections with lip seals for spiral
duct according to DIN 24145, for exible pipe and for
similar ducts of ventilation and air conditioning systems.
All-round press-moulded beading over the whole length
of casing ensures necessary strength and free move-
ment of the damper blade even with large dimensions.
Low pressure drop and a very low noise level are thus
achieved.
Replaceable damper blade made of high-tempera-
ture-resistant, abrasion-proof calcium silicate with
wear-resistant elastomer seals. Damper blade leak tight-
ness class 3 according to EN 1751.
Option: Casing with powder coating. ⇒ see page 6
Option: Damper blade with metal cover (not replacea-
ble) made of galvanized steel or 1.4301 stainless steel.
Enclosed 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. Thermal release mech-
anisms for 70°C or 95°C nominal temperature. The
operation units can be actuated manually or electrically.
⇒ see pages 4 and 5
Release mechanisms, operation units and electric
actuators are enclosed and equipped with a spring
return. They can also be connected in a form-locking
or force-tting manner, are easy to replace and can be
easily retrotted as required. Thanks to the enclosure
and the suitable materials, the re dampers are main-
tenance-free, i.e. there is no need for any function-pre-
serving cleaning, recurrent lubrication or adjustment. For
installation with horizontal or vertical damper blade axles
and in intermediate positions. Air ows are possible from
each connection side. Connection to ventilation ducts
made from non-combustible or combustible materials is
possible, also protective grille. Installations gaps from
15 mm are possible.
FR90 re dampers according to EN 15650
Fire classications: EI 30/60/90/120 (ve - ho, i ↔ o) S C10ooo
Declaration of performance: DoP no.: CPR/FR90/003
EU Declaration of Conformity according to Directive 2014/34/EU
for use in potentially explosive atmospheres
Environmental Product Declaration ISO 14025, EN 15804:
EPD-WWB-20180132-ICC1-DE
Additional national certicates and general
type approvals in Germany:
• Building materials:
Certicate MPA-BS 6000/593/18
FR90 re dampers
are essentially made
from non-combustible building materials.
• Air transfer applications: Z-6.50-2133
• Circular installation subframe RR (RR100, RR150) for sim-
plied installation in circular installation openings. Only up to
DN 315! ⇒ see pages 7, 8, 13, 14, 22, 43 to 45
• Rectangular installation subframe RE (RE100, RE150) for
simplied installation in rigid walls and ceilings and in metal
stud walls with cladding on both sides.
⇒ see pages 7, 8, 13, 14, 20 bis 22, 43 to 45
• With rectangular installation subframe RH (RH100, RH150)
for installation in wooden walls and wooden ceilings.
⇒ see pages 7, 8, 28 to 31, 43 to 45
• Rectangular installation subframes RH150 for installation in
ceilings with steel frames. ⇒ see pages 7, 8, 33, 34, 43 to 46
•Mounting frame AE for mounting on rigid walls and ceilings
and walls with cladding on one side and with or without metal
studs.
⇒ see pages 7, 8, 15, 26, 27, 35, 43, 44
•Installation subframe ER6 for sliding ceiling connections
with drops of up to 40 mm in metal stud walls with cladding
on both sides.
⇒ see pages 7, 8, 23 to 25, 43, 44
•Mounting frame RV including connecting frame (1 x) for
installation remote from rigid walls and ceilings, and remote
from metal stud walls with cladding on both sides and ventila-
tion ducts with 4-sided cladding.
⇒ see pages 7, 8, 36 to 39, 43 to 46
•Connecting frames (2 x) for installation remote from rigid
walls and remote from metal stud walls with cladding on both
sides and ventilation ducts with 2 and 3-sided cladding.
⇒ see pages 7, 36 bis 40, 43 to 45
Nominal sizes [mm] DN:
100 - 125 - 140 - 160 - 180 - 200 - 224 - 250 - 280 - 315 - 355 - 400 - 450 - 500 - 560 - 630 - 710 - 800
Options:
FR90 re dampers
in these sizes achieve re resistance periods of up to 120 minutes if they are installed in accordance with
the following stipulations. Installation types in, on or remote from rigid walls and ceilings or metal stud walls, in wooden walls and
ceilings and in ceilings with steel frames with a minimum thickness and re resistance period. If the walls, ceilings have a re
resistance period of less than 120, 90 or 60 minutes, the re resistance period of the FR90 re dampers is reduced accordingly;
partly if the minimum thickness is lower.

User Manual 5.3 (2021-06) 4 Subject to change
Series FR92
FR90 re dampers
Release mechanisms and actuators (1)
Thermal-mechanical release mechanism - Standard -
with 70°C release element, protection class IP54.
Option: with coated 70°C release element.
Option: with coated 95°C release element.
Option: with limit switch
E Changeover with gold-plated contacts for 5 A at
250 V AC or 24 V DC; protection class IP67
1 m silicone-free connection cable 3 x0.34 mm².
One or two can be plugged in for the CLOSED and/or OPEN
position indicator instead of blind caps.
Enclosed
Release element
can be replaced
from the front.
Blind cap
can be replaced
with
OPEN limit
switch.
Manual release
“Red button”
Lever for opening the
re damper.
Inserted
CLOSED limit
switch.
FR90 re dampers, series FR92, are tted with maintenance-free thermal-mechanical release mechanisms or with
thermal-electrical release mechanisms on the spring return actuators. Release occurs at a nominal temperature of
70°C or 95°C. Coated release elements provide increased corrosion protection.
Electric spring return actuators also close the re dampers if the supply voltage is interrupted. They reopen the re
dampers as soon as the voltage is present again.
Release mechanisms and operation units can be replaced on site!
Release mechanism and remote release with lift cylinder
Option: with additional remote release based on the:
Closed circuit principle. The re dampers must be opened
manually, and close after the electrical supply voltage is inter-
rupted.
GU24 with magnetic clamp 24 V DC; 1.6 W; 100% duty
cycle; IP42.
WU220 with magnetic clamp 230 V AC; 4 VA; 100% duty
cycle; IP42.
Open circuit principle. The re dampers must be opened
manually, and close by means of electrical or pneumatic
stimulus.
G24 with lifting solenoid 24 V DC; 3.5 W; 100% duty
cycle; IP42.
W220 with lifting solenoid 230 V AC; 5.5 PI; 100% duty
cycle; IP42.
P with lift cylinder 4 to 8 bar.
P2 with lift cylinder 1.2 to 8 bar.
Option: Electric spring return actuator - Standard up to DN 315
- only for sizes DN ≤ 315 mm
with 70°C release element; protection class IP54.
M220-10/F 230 V AC; 6.5 VA / 3.5 W; Imax ≤ 5 ms = 4 A
M24-10/F 24 V AC/DC; 4 VA / 2.5 W; Imax ≤ 5 ms = 8.3 A
Runtime: Opening < 60 s, closing ≈ 20 s
CLOSED/OPEN position indicators via limit switches for 0.5 A
at ≤ 250 V AC or for 1 mA up to 3 A at 5 up to 250 V DC.
Halogen-free connection cable; 1 m long; 2 x 0.75 mm² and
6 x 0.75 mm². The AMP connector plugs are detachable.
Option: with 95°C release element.
Figure shows M220-10/F or
M24-10/F.
Button for functional test

User Manual 5.3 (2021-06) 5Subject to change Series FR92
Option: Electric spring return actuator
with 70°C release element and terminal box.
EM-1 10 Nm
EM-2 15 Nm
RM-1 10 Nm
Power consumption up to 20 W including heating;
Inom ≤ 0.7 A; Imax ≤1 s ≈2.5 A
Runtime: Opening ≈ 30 s, closing ≈ 10 s.
CLOSED and OPEN position indicators via limit
switches for ≤ 3 A for 24 V AC/DC and ≤ 0.25 A at
250 V AC/DC; at least 5 V, 10 mA.
The 12 x0.5 mm² halogen-free connection cable must be wired
in the terminal box! All of the contained voltages must be the
same!
The actuators can be rotated into suspend-
ed and vertical positions on site.
Terminal box
Thermal-mechanical release mechanism with 70°C
release element; protection class IP54.
Option: with coated 70°C release element.
Option: with explosion-protected limit switch
E-Ex with normally closed and normally open contact
for 6 A at ≤ 250 V AC or 0.25 A at ≤ 230 V DC; protection
class IP65; 2 m connection cable 4 x0.75 mm².
One or two can be attached for the CLOSED and/or OPEN
position indicator.
designs
Building area where normal mode
a dangerous, potentially explosive area ...
... as a mixture of air and
combustible gases, mists or vapours ...
... in the form of a cloud of
combustible dust contained in the air ...
... can form occasionally. ... occurs temporarily or not at all. ... can form occasionally. ... occurs temporarily or not at all.
Zone 1 2 21 22
Identication of the re damper II 2 G Ex h IIC T6 / T5 II 3 G Ex h IIC T6 / T5 II -/2 D Ex h IIIC T80°C / T95°C II -/3 D Ex h IIIC T80°C / T95°C
Thermal-mechanical release mechanism
with or without explosion-protected limit switch X X *)X X *)
Motor drive EM-1 or EM-2 X X *)X X *)
RM-1 - X - X
Ambient temperatures: -20 … +40°C for T6 and T80°C / -20 … +50°C for T5 and T95°C *) Can also be used in this zone.
24 to 240 V AC/DC;
protection class IP66.
}
Use of explosion-protected designs
Enclosed release element
Enclosed
release element
Option: Electric spring return actuator
- standard from DN 355 -
with 70°C release element; protection class IP54.
M220-9/H 230 V AC; 9.2 VA; Imax ≤ 2 ms = 0.27 A.
M24-9/H 24 V AC/DC; 6,1 VA / 3.5 W; Imax ≤2 ms = 3.5 A.
Runtime: Opening ≈ 60 s, closing ≈ 21 s.
CLOSED/OPEN position indicators via limit switch for
5 A at ≤240 V AC.
Halogen-free connection cable; 0.9 m long;
2 x0.75 mm² and 6 x0.75 mm². The AMP connector
plugs are detachable.
Option: with 95°C release element.
Enclosed release element
Button for functional test
FR90 re dampers
Release mechanisms and actuators (2)

User Manual 5.3 (2021-06) 6 Subject to change
Series FR92
FR90 re dampers
•meet the hygiene requirements according to VDI 6022-1, VDI 3803-1, DIN 1946-4, DIN EN 13779
• do not promote the growth of microorganisms 1) (fungi, bacteria). This
reduces the risk of infection for people and also the necessary cleaning and
disinfection work!
• are resistant to disinfectants 2)
• are suitable for use in hospitals and similar facilities!
•
permanently perform their function under high corrosion conditions.
Tested according to EN 15650, annex B with 20% saline solution.
1) The corresponding resistance of the materials to fungi and bacteria was veried by testing the microbial metabolic potential according to
DIN EN ISO 846 for all materials in the FR90 re dampers.
2) The resistance to disinfectants of the materials in the FR90 re dampers was tested with the disinfectant groups of active ingredients alcohol and
quaternary compounds. These disinfectants are on the list by the Robert Koch Institute, and were used in accordance with the specications in
the list of disinfectants by the Disinfectants Commission in the German Association for Applied Hygiene (VAH). It has been veried that FR90 re
dampers can withstand normal use of disinfectants and disinfection methods.
W
D
D
D
Vertical installation positions D = ceiling
Horizontal installation positions W = wall
W
D
Damper blade axis and actuator
can be installed to rotate up to 360°!
Installation remote from
and above ceilings
Installation remote from
and below ceilings
Installation remote from walls
D
W
D
Installation directly under ceilings
Installation directly on ceilings
Installation
directly on walls
Installation in walls
Vertical installation in ceilings
Non-opera-
tion side
Visible side
Installation suspended in ceilings
W
Installation positions
Option: Powder coating
For FR90 re damper casings with inner and outer epoxy resin coating
• Damper blades with metal cover made of 1.4301 stainless steel
• Thermal-mechanical release mechanisms with corrosion-resistant (coated) release element 70°C
should be used. This allows for additional corrosion protection for higher stresses.
FR90 re dampers
Powder coating/hygiene /installation positions
Operation side

User Manual 5.3 (2021-06) 7Subject to change Series FR92
With mounting frame AE for mounting on rigid
walls and ceilings and on walls with cladding on one
side (shaft walls) and
with and without metal
studs.
⇒ see pages 8, 15, 26,
27, 35, 43 and 45
FR90 re dampers
Installation subframes/mounting frames/connecting frames
Featured: Size DN ≤315
Rectangular installation subframe RE100 or RE150 for
easy – also multiple – installation in rigid walls and ceil-
ings and in metal stud walls with cladding on both sides.
⇒ see pages 8, 13, 14, 20 to 22, 43 to 45
With rectangular instal-
lation subframe RH100
or RH150 for dry instal-
lation in wooden walls
and in wooden ceilings
⇒ see pages 8, 28 bis 31,
43 to 46
With rectangular instal-
lation subframe RH150
for installation in ceilings
with steel frames.
⇒ see pages 8, 33, 34, 43 to
46
With installation subframe ER6 for sliding ceiling
connections with a drop of up to 40 mm in metal stud
walls with cladding on both sides.
The drop can be sin-
gle or recurring (set-
tlement and chang-
ing loads).
⇒ see pages 8,
23 to 25 , 43, 44
With circular installation subframe RR100 or RR150
for simplied installation in circular openings such as
core holes in rigid walls and ceilings or holes in metal
stud walls with cladding on both sides.
Only up to DN 315!
⇒ see pages 8, 13, 14, 22,
43 to 45
Mounting frame for installation remote from rigid walls
and ceilings and remote from metal stud walls with
cladding on both sides and ventilation ducts with re-
resistant cladding.
⇒ see pages 36 to 40, 43, 44
With mounting frame RV for installation remote from
rigid walls and ceilings and remote from metal stud
walls with cladding on both sides with ventilation ducts
with 4-sided re-resistant cladding.
⇒ see pages 8, 36 to 39, 43 to 46

User Manual 5.3 (2021-06) 8 Subject to change
Series FR92
DN from 100 355
to 315 800
Ø D1 DN - 1 DN - 1
Ø RR DN + 99 -
RE/RH DN + 89 DN + 99
AE DN + 110 DN + 120
L 320 340
L1 40 50
L2 155 160
L3 65 80
L4 37 52
L5 283 288
L6 15 30
FR90 re dampers
Data sheet (1)
L2 150 L6
Installation subframe RR / RE / RH (150mm long)
RR
□HR/ER
Control opening
Casing
Thermal-mechanical
release mechanism
Manual release
Limit switches
E-OPEN (optional)
Control opening
L2
50
L1
Outer dimensions = DN + 8
1D
Manual lever
Operation unit
Manual release
Release element
Damper bladeShut-off damper blade
Enclosed transmission
Limit switch E-CLOSED
(optional)
Lip seal
231
L
L1
Installation subframe RR / RE / RH (100 mm long)
L2 100 L3
□
HR/ER
RR
All dimensions in mm
With installation subframe RR100, RR150 (circular) or RE100, RE150, RH100,
RH150 (rectangular)
Installation lengths 100 mm and 150 mm.
⇒ see pages 3, 7, 13, 14, 20 to 22, 28 to 34, 43 to 45
□EA
Mounting frame AE
L2 128
L5
L4
Installation subframe ER6 (only available assembled)
101 101
□ER
L2 100 L3
30
Stud profile depths
S: 50 to 125 mm
86
With installation subframe ER6
⇒ see pages 3, 7, 23 to 25, 43, 44
Mounting frame RV
L2
□95+ND
100 L3
□031+ND
With mounting frame RV
⇒ see pages 3, 7, 36 to 39, 43 to 45
With mounting frame AE
⇒ see pages 3, 7, 15, 26, 27, 35, 43 to 45

User Manual 5.3 (2021-06) 9Subject to change Series FR92
Maximum excess lengths of mechanical and electrical equipment parts.
Additional space must be provided for
assembly, electrical connections and main-
tenance; observe the cable entry points!
In addition to the "T" measurement, it is
recommended that a distance of 400 mm
be kept from adjacent walls, ceilings or
other re dampers, in order to ensure that
the release mechanisms and actuators
can be accessed for operational purposes.
Damper blade
Operation side: X
Non-operation side: Y
Actuators
U horizontal (delivery condition)
J vertical
J3 EM-1, RM-1, EM-2
rotated to vertical or suspended
position
J4 M220-11/H, M24-11/H
rotated to suspended position
DN
≤ 200 V5-1
≥ 224 to ≤ 315 V3-1
≥ 355 V4
DN Ø D1 L J3 J4 X Y
100 99 320 220 160 - -
125 124 320 210 150 - -
140 139 320 200 140 - -
160 159 320 190 130 - -
180 179 320 180 120 - -
200 199 320 170 110 - -
224 223 320 160 100 - -
250 249 320 150 90 - 10
280 279 320 130 70 - 25
315 314 320 115 55 - 43
355 354 340 95 35 - 52
400 399 340 70 10 - 75
450 449 340 45 - 12 100
500 499 340 20 - 37 126
560 559 340 - - 68 156
- 630 629 340 - - 104 192
710 709 340 - - 144 233
800 799 340 - - 190 279
FR90 re dampers
Data sheet (2)
Operating area, closing and opening
• FR90 re dampers are quick-closing, except for the electric actuator ver-
sions. Due to the ow dynamics, if the re damper is triggered at high inow
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 conditioning system. When shut-o󰀨 dampers are closed,
the volume ows are distributed to other parallel dampers that are still open.
This may lead to excessive stress, in particular at high operating pressures,
large volume ows and large cross-sections. Electric actuators should be
used under such conditions. They close re dampers relatively slowly. In
addition, the fan switch-o󰀨 can also be triggered via the OPEN limit switch.
•
The application limits marked in the nomograms must be complied with!
⇒ see page 9
• For large re dampers that are subjected to an unfavourable ow, actuators
with large torques may be necessary in order to open the re dampers when
the fan is running and there are very large volume ows. These actuators are
available on request. Alternatively, it is also possible to switch on the fans
once the re dampers are fully open.
• It must be ensured that the inows and outows are as equal as possible.
• FR90 Fire dampers with electric actuator can be used for OPEN/CLOSED
volume ow control.
All dimensions in mm
Y
L
XDN T
J3, J4 J3
U
Thermal-mechanical release mechanisms are marked with V3-1, V4,
V5-1. The allocations dependent on DN nominal sizes must not be changed!
Size-dependent excess lengths
T U
Thermal-mechanical
release mechanism 130 -
with: • W220, WU220 155
• G24, GU24 155 -
• P, P2 140 -
• E-Ex limit switch 140 -
M220-9/H, M24-9/H 125 60
M220-10/F, M24-10/F 85 80
M220-11/H, M24-11/H 110 110
EM-1, EM-2, RM-1 310 216
Size-independent
excess lengths

User Manual 5.3 (2021-06) 10 Subject to change
Series FR92
100
3
6
7
8
9
10
11
12
13
14
5
2
4
Relative sound power level L [dB(A)]
WA
30
70
20
25
125
140
160
180
200
224
250
280
315
355
400
450
500
560
630
710
800
60
50
40
3
6
7
8
9
10
11
12
13
14
15
2
3
4
5
6
7
10
15
20
30
40
50
100
70
1
300
200
150
]aP[pPressure drop
S
Volume flow V [m³/h]
200 300 500 700 1000 2000 3000 5000 10000 20000100 3000050 75
Nominal size DN [mm]
v = 2 m/s
A
4
5
15
FR90 re dampers
Dimensioning (1) pressure drop, sound power level with ventilation duct connection on both sides
pS
LR
Relative sound power level
Example: Both sides with ventilation duct connection
V = 265 m³/h
DN = 125 mm
v
A = 6 m/s
Dps = 16 Pa
LWA = 38 dB(A)
Sound power level LW-Oct for the octave mid frequencies
f [Hz] 63 125 250 500 1000 2000 4000 8000
LWA [dB(A)] 38 38 38 38 38 38 38 38
DL6 m/s [dB] +12 +6 [phone]
LW-Oct [dB] 50 44 42 36 31 23 - -
FR90 re dampers can be used up to 15 m/s velocity in the inow cross-section AA and up to 2500 Pa operating pressure.
Nomenclature
⇒ see page 11
-15
0
-20
-5
-10
+5
+25
Oktav-Mittenfrequenz [Hz]
Relative sound power level ]Bd[L
125 250 500 1000 2000 4000 8000
63
0
5
+20
+15
+10
-25
-30
-35
-40
Octave mid frequency [Hz]
Flow velocity [m/s] v
a
2
4
8
12
8
12
10
4
2
6
vA
vA

User Manual 5.3 (2021-06) 11Subject to change Series FR92
FR90 re dampers
Dimensioning (2) Free cross-sections, weights, nomenclature
Free cross-sections Afree [m²], weights [kg]
Nomenclature
DN [mm] Nominal size
AA [m²] Inow cross section
Afree [m²] free cross-section
V [m³/h] Volume ow
vA [m/s] Flow velocity in inow cross-section
(inow velocity)
Δps [Pa] Static pressure drop
LW-Oct [dB] Octave sound power level LW-Oct = LWA + DL
DL [dB] Relative sound power level to LWA
f [Hz] Octave mid frequency
LWA [dB(A)] A-rated, area-corrected sound power level
DN Afree
[m²] RE100 RE150
[m²] FR90 FR90 1) RH100 RH150 RR100 RR150 AE ER6 RV
100 0.0047 2.4 2.0 3.0 1.4 2.2 3.5 4.9 2.1
125 0.0082 2.6 2.4 3.6 1.7 2.5 4.1 5.7 2.5
140 0.0108 2.7 2.6 3.9 1.8 2.7 4.5 6.1 2.7
160 0.0149 2.9 3.0 4.5 2.0 3.0 5.0 6.8 3.1
180 0.0195 3.1 3.3 5.0 2.2 3.3 5.5 7.4 3.4
200 0.0248 3.3 3.7 5.5 2.4 3.6 6.1 8.1 3.8
224 0.0298 3.7 4.1 6.2 2.7 4.0 6.8 8.2 4.2
250 0.0383 4.0 4.7 7.0 2.9 4.4 7.6 9.0 4.8
280 0.0494 4.5 5.3 7.9 3.2 4.8 8.5 9.9 5.4
315 0.0642 4.9 6.0 9.0 3.6 5.3 9.6 11.0 6.1
355 0.0806 7.5 7.6 11.4 - - 11.8 14.3 7.0
400 0.1051 8.5 8.7 13.1 - - 13.4 16.2 8.1
450 0.1356 10.0 10.0 15.1 - - 15.3 18.5 9.4
500 0.1702 11.4 11.5 17.2 - - 17.3 20.9 10.7
560 0.2169 12.9 13.3 19.9 - - 19.9 23.9 12.4
630 0.2786 17.9 15.5 23.2 - - 23.0 27.7 14.6
710 0.3584 21.2 18.2 27.3 - - 26.8 32.3 17.2
800 0.4603 25.8 21.5 32.3 - - 31.3 37.9 20.3
Installation
subframes
1) Version with thermal-mechanical release mechanism
The weight of the re dampers must factor in the weight of the
• installation subframes RE, RH, RR, ER6, mounting frame AE or the mounting frame RV.
• For other versions the following weight supplements must be added:
- M220-10/F; M24-10/F: 0.3 kg
- M220-9/H; M24-9/H: 1.3 kg
- M220-11/H; M24-11/H: 0.8 kg
- EM-1; RM-1; EM-2: 4.1 kg
Mounting
frame
Installation subframes Mounting
frame
Fire damper

User Manual 5.3 (2021-06) 12 Subject to change
Series FR92
Blind cap
E-
CLOSED
Thermal-mechanical
release mechanism
Control openings
Inspection openings
Actuator
left
Actuator
right
Installation with mortar
in walls and ceilings with
only 15 mm spacing.
s 15≥
s 15≥
s 15≥
FR90 re dampers
Installation in rigid walls and ceilings (1)
ad or
b
The rigid walls and ceilings can
be made of concrete, lightweight
concrete, porous concrete (aerated
concrete) or plaster. They can be a
masonry or wallboard construction
and must have a bulk density of
≥ 450 kg/m³. Walls can also be re
walls, shaft walls, shafts or ducts.
The all-round ≥15 mm wide gap "s"
must be lled manually or mechani-
cally ≥ 100 mm deep with mortar of
group II or III according to DIN 1053
or classes M2.5, M5, M10 or M20
according to EN 998-2, or with the
corresponding re-protection mortar
or gypsum mortar.
Installation opening a x b or ∅d
a ≥DN +30 mm, b ≥DN +75 mm,
d≥DN +75 mm
Clearance between FR90 re
dampers ≥ 15 mm.
Installation does not require a
specic opening when the wall or
ceiling is built.
Fire resistance period
in minutes
30
60
90
30
60
90
120
Rigid walls 95
Rigid ceilings 100 115
To install the FR90 re dampers in
rigid walls and ceilings, the mini-
mum thicknesses W, D [mm]:
Installation without
installation subframe
(standard installation)

User Manual 5.3 (2021-06) 13Subject to change Series FR92
Alternative
Fill on both sides
Screw
M6x20
Installation
subframe
RE
100 / 150
Alternative
Installation
subframe
RE
100 / 150
Screw M6x20
FR90 connection
brackets for attachment
Installation
subframe
RE
100 / 150
Alternative
Screw M6x20
FR90 connection
brackets for attachment
FR90 re dampers
Installation in rigid walls and ceilings (2)
Installation with circular
installation subframes RR100,
RR150 (only DN ≤ 315 mm)
Installation with mortar
Filled installation
Installation with mineral wool
Fire resistance period
in minutes
30
60
30
60
90
Rigid walls 70*)100
Rigid ceilings -100
*) This installation must be performed with
installation subframe RE100 or RR100.
Installation openings
•Installation with mortar
DN ≤ 315: a x b = DN + 120 to 190
DN ≥ 355: a x b = DN + 130 to 200
DN ≤ 315: ∅d = DN + 130 to 170
DN ≤ 200: a x b = DN + 130
Fill gap s with mortar.
⇒ see page 12
Mortaring in ceilings must be secured
from falling out by roughening the
reveals or using mortar anchors!
•Installation with mineral wool
DN ≤ 315: a x b = DN + 110 to 130
DN ≥ 355: a x b = DN + 120 to 140
DN ≤ 315: ∅d = DN + 120 to 140
Design gap s ≤ 20 mm and ll with
mineral wool!
⇒ see page 14
Mineral wool must be prevented from
falling out by using a non-combustible
adhesive! A sheet metal cover is rec-
ommended when using insulation wool!
•Filled installation
DN ≤ 315: a x b = DN + 93 mm
DN ≥ 355: a x b = DN + 103 mm
DN ≤ 315: ∅d = DN + 103 mm
Joints must be designed approx. 2 mm
and sealed on both sides of the wall
or ceiling with gypsum ller or with
non-combustible adhesive!
Adhesive ⇒ see page 45
b
a
All dimensions in mm
Installation
subframe
RR
100 / 150
Screw M6x20
FR90 connection
brackets for attachment
Fill on both sides
Screw
M6x20
Installation
subframe
RR
100 / 150
FR90 connection
brackets for attachment
Installation
subframe
RR
100 / 150
Screw M6x20
b
ad resp.
Installation with rectangular
installation subframes
RE100, RE150
For installation in rigid walls and
ceilings, the minimum thicknesses
W, D[mm] are required:

User Manual 5.3 (2021-06) 14 Subject to change
Series FR92
Settlement joint
Overlap
15 mm≥
s 15≥
FR90 fire damper
Rigid ceiling
Installation
opening
Non-load-
bearing rigid wall
100 mm thick≥
B
B
100 mm dick≥
s 15≥C
Lintel
FR90 fire dampers
Overlap
15 mm≥
C
Settlement joint
Rigid ceiling
Installation
opening
Non-load-
bearing rigid wall
C-C
Lintel
Mortar
Settlement joint
B-B
Mortar
Settlement joint
Reinforcement
15 s 50≤ ≤
A
NDx9.0≤
0.9 x DN≤
15 s 50≤ ≤
05s51
≤≤
0.9 x DN≤
A-A
Settlement joint possible
A
W, D
150
Partial mortaring
Mineral wool:
Bulk density ≥ 150 kg/m³
Melting point ≥ 1000°C
Adhesive ⇒ see page 45
Settlement joints ("sliding ceiling connection")
above non-load-bearing rigid walls and under ceil-
ings are lled on site, with mineral wool for exam-
ple. The illustration shows the installation of FR90
re dampers immediately under such settlement
joints. A reinforcement should be inserted into the
mortar bed or a lintel to prevent cracks from form-
ing later.
In hard-to access corners and directly on walls and ceilings, gaps "s" on
FR90 re dampers without installation subframe can be lled with two layers
and 150 mm deep with mineral wool "Knauf Insulation TPD" or equivalent.
They must be secured with non-combustible adhesive. A sheet metal cover
is recommended when using insulation wool! I Mortaring in ceilings must be
prevented from falling out by roughening the reveals or using mortar anchors!
Fire resistance period
in minutes
30
60
90
Rigid walls 100
Rigid ceilings 100
For installation in rigid walls and
ceilings, the minimum thicknesses
W, D [mm] are required:
Metal anchor M6
Screw M6
FR90-corner
bracket
Wall / Ceiling
s
FR90- connection bracket
Screw M6
Metal anchor M6
Wall
Detail Y
Installation frame RE
FR90-
connection brackets
RE
Release
mechanism
or actuator
W, D
09≥54≥
s
s
s
A
AX
s
s
c
A-A
Y
s
c
c
Spacings "c" between subframes RE or RR that are not directly next to each other
depend on the structural properties of the wall or ceiling. c ≥50 mm is normally su󰀩cient.
For installation in walls, 4 x FR90 connection brackets or FR90 corner brackets are
required on one side; for installation in ceilings, they are necessary on both sides (8 x).
Types of walls and ceilings
⇒ see page 12
Multiple installation of up to 4 x FR90 re dampers of the same size
side-by-side, above each other or in a combined manner is possible
without any weight restriction. Assembly of frames RE ⇒ see page 21
FR90 re dampers
Installation in rigid walls and ceilings (3)
Detail X

User Manual 5.3 (2021-06) 15Subject to change Series FR92
55≥
EA
Release mechanism
or actuator
W, D
011≥
A-A
EA
AEAE
EA≥
A
A
Mounting on masonry (example)
FR90 re dampers
Mounting on rigid walls and ceilings
s
W, D
Pass-through
threaded bolt M6
or dowel
160W, D ≥
AE
x2
x1
EA
2x
1x
AE-WasherHexagon nut M6 Mounting frame AE
Ventilation duct
as required
FR90
128
d
A-A
A
A
Installation opening
∅d= DN +10 to 15 mm
The gap between ventilation duct
and wall or ceiling does not need
to be lled.
Mounting frames AE must be
secured with threaded rods which
pass through the wall or ceiling,
and washers and nuts on both
sides.
Dowels with verication of re pro-
tection suitability can be used in
suitable walls and ceilings.
Factory-produced holes in the
mounting frames AE indicate the
number of the fastenings.
DN Pc. Pc.
[mm] per corner total
≤ 315 1 4
≥355 2 8
d
Spacing between the mounting frames AE of the FR90 re dampers and from
the adjacent walls and ceilings is not required.
Mounting with mounting frame AE
Types of walls and ceilings ⇒ see page 12
DN 100 125 140 160 180 200 224 250 280 315 355 400 450 500 560 630 710 800
AE 210 235 250 270 290 310 334 360 390 425 475 520 570 620 680 750 830 920
x1 - - - - - - - - - - 228 250 275 300 330 365 405 450
x2 120 145 160 180 200 220 244 270 300 335 385 430 480 530 590 660 740 830
Fire resistance period
in minutes
30
60
90
Rigid walls and ceilings 100
Ventilation ducts on the non-operation side of the FR90 re damper can
be fed through the wall or ceiling and should lie ush. The connection of the
FR90 re damper on the non-operation side can be fully inserted in these.
Connections can be made to the casing of missing re dampers if it is
ensured that the damper blade can move freely! ⇒ see page 9
All dimensions in mm
Mounting
frame
AE
To mount the FR90 re
dampers, the opposite
minimum thickness
W, D [mm] is required:

User Manual 5.3 (2021-06) 16 Subject to change
Series FR92
Wall types
The walls, shaft walls, facings, re walls etc. must be pro-
duced according to the manufacturer’s specications or
technical standards. General building authority test certi-
cates (AbP) must be observed in Germany.
Consideration must be given to specications for design,
re resistance period and re safety classication, spec-
ied wall widths, wall heights and wall thicknesses, and
dimensionings for studding and cladding.
• Flexible walls of the "metal stud wall" type can be clad on
one side or both sides. The cladding may be single-layer
or multi-layer, depending on the re resistance period.
In general, shaft walls and facings should be clad on one
side. Shaft walls without metal studs should only be fas-
tened at the side. ⇒ see pages 26 to 27
Fire walls and safety partition walls are metal stud walls
with multi-layer cladding on both sides, and can contain
inlays made from sheet steel. ⇒ see page 35
• Metal stud walls can be produced with or without mineral
wool between the metal studs.
• Cladding made of DF type gypsum boards according
to EN 520 or equivalent cladding material (re-resistant
plasterboards, cement-bound boards, calcium silicate
boards, etc.) must be xed in a manner appropriate to
the wall in question.
In the perimeter area of the FR90 re dampers, cladding
must be secured with drywall screws of a suitable length
and Ø ≥3.9 mm at spacings of ≤ 200 mm or ≤ 150 mm.
⇒ see pages 18 to 27 and 35
• Proles for metal stud walls are described by DIN 18182
and EN 14195, and constructions by DIN 18183.
• FR90 re dampers may be installed in metal stud walls
with up to 1000 mm metal stud spacing (span), and
have been tested accordingly.
• The required bay rails and sti󰀨eners must be used
for installing FR90 re dampers in metal stud walls so
as to produce circumferential frames. Intersections
must be connected with two blind rivets made from
steel of 4to 5 mm diameter or with drywall screws
of ≥3.5 mm diameter and ≥ 10 mm length.
Two-way prexing may also be performed by means of
clinching (crimping), as is typical in dry construction.
Two joint points should be used.
In addition, the claddings must
be connected to the metal
framework at the
intersections using
double-connected
screw fastenings.
•Fillings suitable for gap "s":
Openings in the gap "s" can be lled manually or
mechanically with mortar of group II or III according
to DIN 1053 or classes M2.5, M5, M10 or M20 according
to EN 998-2, or with the corresponding re protection
mortar or gypsum mortar.
The minimum thickness W of the wall is generally su󰀩-
cient as the depth of mortaring.
"Knauf Insulation TPD" insulation wool or equivalent
with bulk density ≥ 150* kg/m³, building material class A
according to DIN 4102 or according to EN 13501-1 and
melting point ≥ 1000°C must be used; insulation wool as
well.
Mineral wool must be secured to prevent it falling out
by using a non-combustible adhesive. Adhesive
⇒ see page 45
In the case of installation subframes RE in metal stud
walls, the gap can also be lled with cladding panels
made of wall-building materials, construction boards
made from calcium silicate, mats made of calcium-mag-
nesium silicate or with ceramic bre; the building material
class A and ≥ 1000° C melting point is always required.
*)Lower bulk densities are possible for shorter re resistance periods of
less than 90 minutes! ⇒ see page 19
The following minimum thickness W [mm] is required
for installing FR90 re dampers:
FR90 re dampers
Installation in metal stud walls (1a) General
2-way
crimping
2 drywall screws
3,5 mm (on both sides)
Details in accordance with wall types ⇒ see pages 18 to 27
Fire resistance period in minutes 30
60
30
60
90
30
60
90
120
With cladding on
both sides
Metal stud walls
≥1-layer
cladding 70 - -
≥2-layer
cladding - 95 95
Shaft walls made of
wall boards, at least
2-layer
with metal
studs -90 -
without metal
studs - 40 -

User Manual 5.3 (2021-06) 17Subject to change Series FR92
For H trimmers with horizontal proles
above and below the installation opening
and with vertical proles on the right and left edge, non-adjacent vertical proles must
be ≥ 500 mm longer. Cladding for these proles must be screwed on with spacing of
≤200 mm.
≤Span ≤Span ≤Span ≤Span ≤Span ≤Span ≤Span ≤Span ≤Span ≤Span
≤Span
≥50
Installation openings for FR90 re dampers require cutouts in cladding, and trimmers or particular arrangements
may be required in metal studs.
Sub-structures of metal stud walls consist of CW proles as supports. These should be set on the oor and on the ceil-
ing in UW proles fastened to the oor and ceiling. Supports adjoining rigid walls are then attached to these proles.
Installation openings for FR90 re dampers should be produced, as described above, as circumferentially sealed frames
made of proles. Sealed prole webs are possible, if required, using box-shaped nesting. These are adjoined by llings
made of mineral wool or mortar or installation subframes RE of the re dampers. Exceptions are possible with installa-
tion openings which have an accurate t.
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.
Examples of installation openings
Installation with installation subframes in wall thicknesses ≤ 150 mm Installation with mortar, mineral wool, installation subframe
Trimmers, as shown for retroactive installation, require addition-
al metal studs on the left and right.
These should be set in the oor and
ceiling proles.
For this purpose, the wall can be
cut and new openings created. New
claddings must then be attached to
the added and existing studs, making
sure to maintain the necessary
overlaps. Surplus studs can be
removed as long as the intended
spans are not exceeded.
FR90 re dampers
Installation in metal stud walls (1b) Metal framework
Depending on the type of wall, suitable connections can be used to interrupt proles on ceilings and
oors for the purpose of installing FR90 re dampers. ⇒ see pages 18 to 22, 26 to 27
≥005
≥005
≥005≥005≥005≥005
≤Span ≤Span ≤Span
≥005
≥005
≤Span
≤Span ≤Span

User Manual 5.3 (2021-06) 18 Subject to change
Series FR92
WWall cladding
04≥
Drywall screws 3.9
Distance 200 mm≤
Mortar
03.ac
Mortar
anchor
03.ac
03s51 ≤≤
03s51 ≤≤
03s51 ≤≤
Wall cladding
Mortar
Mask perforated
profiles before
mortaring
Drywall screw Ø 3.9
Weight limit
FR90 re dampers with a total weight of ≤ 90 kg, including mortar
approx. 2200 kg/m³) may be installed between two metal studs!
Total weight [kg] of re damper incl. mortar with W = 100 mm*)
DN 100 125 140 160 180 200 224 250 280
[kg] 6 7 8 9 10 11 13 14 16
DN 315 355 400 450 500 560 630 710 800
[kg] 19 24 28 33 37 44 52 62 75
*) the weights must be multiplied by 1.35 for W = 150 mm.
FR90 re dampers
Installation in metal stud walls (2) Installation with mortar
Connections to
rigid walls, ceil-
ings, oors:
Mortar
FR90 casing
FR90 casing
15≥
15
≥
200≈
15
≥
b
a
Installation openings
a xb or ∅d≥DN +approx. 60 mm
Mortar anchors made from, for example, riveted perforated tape must be attached to the
metal proles of the wall, at least 1 piece per side, with approx. 200 mm spacing.
Openings in perforated metal proles must be masked with adhesive lm before mortaring.
The table
applies for
installation
openings
of the size
DN +60 mm.
Spacings
between the
FR90 re
dampers and
from adjacent
walls and
ceilings.
Connections within the wall
Bay rail between the
re dampers
Installation with mortar
Types of metal stud walls with cladding on both sides ⇒ see pages 16 and 17
Fire resistance period in minutes
30
60
90
120
Walls with ≥2-layer cladding on both sides 95
Ceiling
Wall
Connection profile
Side profile
Bay rail
Stud profile
Gap s = 15 mm to 50 mm
must be lled 150 mm deep
with mineral wool in two-lay-
er cut-outs from boards and
xed in place to prevent fall-
ing out using non-combustible
adhesive. A sheet metal cover
is recommended when using insulation wool! Mortar, mineral wool ⇒ see page 16 Adhesive ⇒ see page 45
W
150
Mortar
B-B Mineral wool
Partial mortaring
(up to re resistance class EI 90)
The minimum thick-
nesses W [mm] shown
opposite are required
for installing the FR90
re dampers:

User Manual 5.3 (2021-06) 19Subject to change Series FR92
Installation recommendation
• Construct metal stud wall with an installation opening and apply cladding
on the one side.
• Fill installation opening with mineral wool and apply a second cladding.
• Cut installation opening in claddings and mineral wool lling and chamfer
them all around.
• Insert and align re damper.
• Seal remaining joints with gypsum ller or equivalent.
FR90 re dampers
Installation in metal stud walls (3) Installation with mineral wool
o
≥04
03.ac
03.ac
03.ac
03.ac
Fill on both sides
Fill on both sides
Drywall screws 3.9
Distance 200 mm≤
Wall cladding
Mineral wol filling
W
Mineral wol fillig
Wall cladding
Drywall screws 3.9
Fill on both sides
All dimensions in mm
200≈
100≥
□
a x b
Mineral wol
filling
07≥
001≥
FR90 casing
≥04
03.ac
Connection to rigid walls,
ceilings, oors
Installation openings
•Metal studs
a xb ≥DN + approx. 60 mm
•Cladding
The notch m x n is required on
the operation side. On the non-
operation side it is only needed
if the dimension "o" on the non-
operation side is greater than
the wall thickness W, minus the
thickness of the cladding.
•Mineral wool lling
The bulk density of the mineral
wool lling around the casing of the
FR90 re damper for a re resist-
ance period of 90 minutes must
be ≥ 150 kg/m³; for 60 minutes
≥100 kg/m³ is su󰀩cient and for
30 minutes ≥50 kg/m³ is su󰀩cient.
m
a
n
DN + ca. 6
b
Connection within the wall
Drywall
screws 3,9
Distance 200 mm≤
Mineral wol filling
Wall cladding
Elastic connection directly to the
FR90 fire damper or to ‘short’
ventilation duct
W
Example for thicker wall
Installation with mineral wool
Types of metal stud walls with cladding on both sides ⇒ see pages 16 and 17
Spacings
between the
FR90 re
dampers and
from adjacent
walls and
ceilings.
⇒ see page 14
mn o
DN ≤315 26 62 107
DN ≥355 31 98 116
01.a
c
Gypsum filler
W
03.a
c
Mineral wol
100 kg/m²
≥
Installation in EI 120 walls is in princi-
ple unchanged. Apply approx. 10 mm
gypsum ller all around.
Fire resistance period in minutes
30
60
90
120
Walls with ≥2-layer cladding on both sides 95
The minimum thick-
ness W [mm] shown
opposite is required for
installing the FR90 re
dampers:

User Manual 5.3 (2021-06) 20 Subject to change
Series FR92
FR90
con-
nection
brackets are
su󰀩cient on one
side of the wall.
FR90 re dampers
Installation in metal stud walls (4a) Installation with installation subframe
W
FR90
connection bracket
≥02
≥02
ER
ER
Fill on
both sides
≥05
Side profile
(as required)
Bay rail
Stud profile
Installation opening
a x b
Bay rail
Connection profile
Dywall screws for wall ceiling attachment
DN 355≥DN 315
≤
FR90 connection brackets
Connection profileSpan
alternative
Drywall screw
3,9
FR90
connection
bracket
≤200≤200
Side profile
(as required)
Bay rail
Stud profile
DN 355≥
DN 315
≤
Connection
profile
FR90 connection
bracket
alternative
FR90 connection
bracket
Drywall screws 3.9
Drywall screws 3.9
Drywall screws
FR90 corner bracket
Screw M6 x 20
Wall / ceiling
Metal dowel M6Metal anchor M6
Hexagon screw M6
Installation opening
• DN ≤ 315: a x b = DN + 91+3 mm
• DN ≥ 355: a x b = DN + 101+3 mm
b
a
Installation
subframe
RE
alternative
FR90
connection
brackets for
attachment
Drywall screw 3,9
Screw M6x20
Fill on both sides
≥50 mm spacing is
required between the
frames of the FR90 re
dampers.
All dimensions in mm
Reveal made of RE
wall-building
materials
Width 50 mm≥
RE
W
0
FR90 casing
FR90 connection
bracket
Single or multi-layer
wall cladding
W
≥0
RE
Reveal made of
wall-building materials
Reveal made of
wall-building materials
FR90 casing
FR90 connection
bracket
Single or multi-layer
wall cladding
Width 50 mm≥
≥58
≥54
RE
FR90 casing FR90 connection bracket
≥04
FR90
corner bracket
FR90 casing
RE Fill on both
sides
Single or multi-layer
wall cladding
FR90 connection
bracket
W
FR90 casing
RE
RE100: W ≤ 110
RE150: W ≤ 150
RE100: W ≥ 150
RE150: W ≥ 200 RE100: W ≥ 150
RE150: W ≥ 200
RE100: W = 125
RE150: W = 175
W
FR90 casing
≥02
RE
FR90 connection
bracket
Single or multi-layer
wall cladding
Installation with rectangular installation subframe RE
Types of metal stud walls with cladding on both sides ⇒ see pages 16 and 17
For installation of
FR90 re dampers,
the opposite mini-
mum thicknesses
W[mm] are
required:
Connec-
tions to rigid
walls, ceil-
ings, oors
Connec-
tions within
the wall
Fire resistance period in minutes 30
60
30
60
90
With cladding on
both sides
Walls
≥1-layer cladding 70 -
≥2-layer cladding - 95
Fire walls and safety partition walls ⇒ see page 35