Rf-t CR120 User manual

www.rft.be
en
Rf-Technologies nv Lange Ambachtstraat 40 9860 Oosterzele Belgium Tel [phone] Fax [phone] [email protected]
0749
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www.HYG.de
C11-EN-N 06/2021
CR120
Optimised circular re damper up to 120’

2Table of content
Table of content
Declaration of performance 4
Product presentation CR120 5
Range and dimensions CR120 5
Variant CR120-L500 6
Range and dimensions CR120-L500 6
Variant CR120-1S 6
Range and dimensions CR120-1S 7
Variant CR120-1S-L500 7
Range and dimensions CR120-1S-L500 8
Evolution - kits 8
Options - at the time of order 11
Storage and handling 12
Installation 12
Installation at a minimal distance from another damper or from an adjacent supporting construction 13
Installation in a rigid wall 14
Installation in rigid floor 16
Installation in flexible wall (metal stud gypsum plasterboard wall) 18
Installation in flexible wall (metal stud gypsum plasterboard wall), sealing with gypsum 20
Installation in flexible wall (metal stud gypsum plasterboard wall), sealing with mortar 22
Installation in gypsum block wall 24
Installation in flexible and rigid wall, sealing with rigid rock wool boards with coating 26
Installation in rigid floor, sealing with rigid rock wool boards with coating 29
Installation remote from the wall, sealing and insulation with rigid rock wool boards with coating 31
Installation remote from the wall, sealing with mortar and insulation with rigid rock wool boards with coating 34
Installation remote from the wall + GEOFLAM 36
Installation in rigid wall with collar for surface-mount 1s 39
Installation in flexible wall with collar for surface-mount 1s 40
Inspection of the damper 41
Operation and mechanisms 42
Electrical connection 46
Weights 48
Selection data 49
Example 49
Correction factor ΔL 50
Sample order 51
Approvals and certificates 51

3
Explanation of the abbreviations and pictograms
Explanation of the abbreviations and pictograms
Wn = nominal width
Hn = nominal height
Dn = nominal diameter
E = integrity
I = thermal insulation
S = smoke leakage
Pa = pascal
ve = vertical wall penetration
ho = horizontal floor penetration
o -> i = meets the criteria from the outside
(o) to the inside (i)
i <-> o = fire side not important
V AC = Volt alternating current
V DC = Volt direct current
E.TELE = power supply magnet
E.ALIM = power supply motor
V = volt
W = watt
Auto = automatic
Tele = remote controlled
Pnom = nominal capacity
Pmax = maximum capacity
GKB (type A) / GKF (type F): “GKB”
stands for standard plasterboards (type
A according to EN 520) while “GKF”
plasterboards offer a higher fire resistance
for a similar plate thickness (type F
according to EN 520)
Cal-Sil = calcium silicate
OP = option (delivered with the product)
KIT = kit (delivered separately for repair or
upgrade)
PG = connection flange to the duct
Sn = free air passage
ζ [-] = pressure loss coefficient
Q = airflow
∆P = static pressure drop
v = air speed in the duct
Lwa = A-weighted sound power level
Lw oct = sound power level per octave
midband
dB(A) = A-weighted decibel value
∆L = correction factor
higher net building volume through compact size optimal acoustic performance
optimal free air passage and minimal pressure loss minimal distance allowed
EN 1751
C
air-tightness class C according to EN1751 Hygiene certificate (www.HYG.de)
suitable for built-in installation suitable for installation remote from the wall
BASTA OK
sealing with fire resistant stone wool boards allowed,
also for asymmetric opening
fast installation

4Declaration of performance
L-06/2021CE_DoP_Rf-t_C11_EN
DECLARATION OF PERFORMANCE Declarationofperformance CE_DoP_Rf-t_C11_EN L-06/2021
1. Unique identification code of the product-type: CR120 2. Intended use/es: Circular re damper to be used in conjunction with partitions to maintain re compartments in heating, ventilating and air conditioning installations. 3. Manufacturer: Rf-Technologies NV, Lange Ambachtstraat 40, B-9860 Oosterzele 4. System/s of AVCP: System 1 5. Harmonised standard / European Assessment Document; notified body / European Technical Assessment, Technical Assessment Body,
notified body; certificate of constancy of performance:
EN 15650:2010, BCCA with identication number 0749; BCCA-0749-CPR-BC1-606-0464-15650.02-2517
6. Declared performance according to EN 15650:2010 (Fire resistance according to EN 1366-2 and classications according to EN 13501-3)
Essential characteristics Performance Range Wall type Wall Sealing Installation Classification
Ø 100-315 mm Rigid wall Reinforced concrete ≥ 110 mm Mortar / Gypsum 1 EI 120 (vei no) S - (500 Pa)
Aerated concrete ≥ 100 mm Gypsum 1 EI 120 (vei no) S - (500 Pa)
Mortar 1 EI 120 (vei no) S - (300 Pa) Stone wool + coating ≥ 140 kg/m³ + coated casing 1 EI 120 (vei no) S - (300 Pa) Stone wool + coating ≥ 140 kg/m³ 1 EI 90 (vei no) S - (300 Pa) Stone wool Mulcol Multimastic SP + coating 1 EI 60 (vei no) S - (300 Pa) Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm 2 EI 90 (vei no) S - (300 Pa) Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm + mortar 2 EI 90 (vei no) S - (300 Pa) Galvanised duct + GEOFLAM® F 45 mm + mortar 2 EI 120 (vei no) S - (500 Pa) Galvanised duct + GEOFLAM® Light 35 mm + mortar 2 EI 120 (vei no) S - (500 Pa)
Rigid oor Reinforced concrete ≥ 150 mm Mortar 3 EI 120 (hoi no) S - (500 Pa)
Aerated concrete ≥ 100 mm Mortar 3 EI 90 (hoi no) S - (500 Pa) Aerated concrete ≥ 150 mm Stone wool + coating ≥ 140 kg/m³ + coated casing 3 EI 120 (hoi no) S - (300 Pa)
Stone wool + coating ≥ 140 kg/m³ 3 EI 90 (hoi no) S - (300 Pa)
Flexible wall Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm Gypsum 1 EI 60 (vei no) S - (500 Pa)
Stone wool + coating ≥ 140 kg/m³ 1 EI 60 (vei no) S - (300 Pa)
Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm Gypsum 1 EI 90 (vei no) S - (500 Pa)
Mortar 1 EI 120 (vei no) S - (300 Pa) Stone wool + coating ≥ 140 kg/m³ + coated casing 1 EI 120 (vei no) S - (300 Pa) Stone wool + coating ≥ 140 kg/m³ 1 EI 90 (vei no) S - (300 Pa)
Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 mm Stone wool Mulcol Multimastic SP + coating 1 EI 60 (vei no) S - (300 Pa)
Galvanised duct + stone wool + coating ≥ 140 kg/m³ 2x50 mm 2 EI 90 (vei no) S - (300 Pa)
Gypsum blocks ≥ 70 mm Block glue 1 EI 120 (vei no) S - (500 Pa)
Ø 100-250 mm Flexible wall Metal studs gypsum plasterboard Type A (EN 520) ≥ 100 mm Stone wool ≥ 40 kg/m³ + cover plates 1 EI 60 (vei no) S - (500 Pa) CR120-1S Ø 100-315 mm Rigid wall Aerated concrete ≥ 100 mm Not applicable 4 EI 120 (vei no) S - (500 Pa)
Flexible wall Metal studs gypsum plasterboard Type F (EN 520) ≥ 100 - ≤ 125 mm Not applicable 4 EI 120 (vei no) S - (500 Pa)
1 Type of installation: built-in,
0-360°. Minimal distances autho- rised with axis till 45°.
≥ 30 mm
≤ 45°360° ≥ 30 mm 2 Type of installation: remote from
the wall, 0/180°. Minimal distances authorised.
≥ 30 mm ≥ 30 mm 3 Type of installation: built-in,
0-360°. Minimal distances authorised.
360° ≥ 30 mm ≥ 30 mm
4 Type of installation: surface-
mounted, 0/180°. Minimal distances authorised.
Nominal activation conditions/sensitivity: Pass Response delay (response time): closure time Pass Operational reliability: cycling MFUS - 50 cycles; MMAG - 300 cycles; B(L)F(T) - 10000 cycles; BFL(T) - 10000 cycles; ONE - 10000 cycles; ONE-X - 10000 cycles; UNIQ - 10000
cycles
Durability of response delay: Pass Durability of operational reliability: Pass Protection against corrosion according to EN 60068-2-52: Pass Damper casing leakage according to EN 1751: ≥ class C
Harmonised standard
EN 15650:2010
The performance of the product identied above is in conformity with the set of declared performance/s.This declaration of performance is issued, in accordance with Regulation (EU) No 305/2011, under the sole responsibility of the manufacturer identi- ed above.
Signed for and on behalf of the manufacturer by:
Mathieu Steenland, Technical Manager
Oosterzele, 06/2021

5
Product presentation CR120
Product presentation CR120
Optimised circular fire damper with a fire resistance up to 120 minutes. A minimal pressure loss is guaranteed thanks to the thin
blade, the fusible link aligned with the blade, and the transmission located outside the tunnel. The damper is available in small
diameters (starting from 100 mm). Its galvanised steel tunnel contributes to the light weight of the damper.
Fire dampers are installed where air ducts penetrate fire-resistant compartment walls. Their role is to restore the fire resistance grade
of the penetrated wall and to prevent smoke propagation. Fire dampers are distinguished by their degree of fire resistance, by their
aeraulic properties as well as by their installation ease. Rf-Technologies’ fire dampers are all CE marked. They can be equipped with
various types of mechanisms depending on the specific needs linked to the project or to the local regulations.
5easy to install
5optimal free air passage and minimal pressure loss
5optimal acoustic performance
5higher net building volume through compact size
5air-tightness class C according to EN1751
∎suitable for built-in installation
∎suitable for installation remote from the wall
∎minimal distance allowed
∎suitable for rigid wall, rigid floor and light wall (metal stud
gypsum plasterboard wall)
∎sealing with fire resistant stone wool boards allowed, also for
asymmetric opening
∎tested according to EN 1366-2 up to 500 Pa
∎operating mechanism outside the wall
∎maintenance-free
∎for indoor use
∎operating temperature: max. 50°C
∎Hygiene certificate (www.HYG.de)
EN 1751
C BASTA OK
1. casing in galvanised steel
2. damper blade
3. operating mechanism
4. rubber sealing ring
5. intumescent strip
6. base plate for thermo-electrical fuse
7. positioning plate
8. sealing ring for damper blade
9. fusible link
10.product identification
10
3
4
4
7
6
1
2
8
9
5
Range and dimensions CR120
ØDn [mm] 100 125 150 160 180 200 250 300 315
Exceeding damper blade: 20 mm for ØDn 315 mm
174
345
17,5ØDn-1
Y
20
ØDn [mm] 315
x -
y 20

6Variant CR120-L500
Variant CR120-L500
CR120 damper with a tunnel casing extension at the wall side to facilitate the connection to the duct when the supporting
construction is thicker than 100 mm.
1. casing in galvanised steel
2. damper blade
3. operating mechanism
4. rubber sealing ring
5. intumescent strip
6. base plate for thermo-electrical fuse
7. positioning plate
8. sealing ring for damper blade
9. fusible link
10.product identification
6
1
2
8
9
5
7
10
4
3
4
Range and dimensions CR120-L500
ØDn [mm] 100 125 150 160 180 200 250 300 315
174
500
17,5ØDn-1
20

7
Variant CR120-1S
Variant CR120-1S
Surface mounted circular fire damper with a fire resistance of 120 minutes. The surface mounting ensures a fast (dry) installation. Its
thin blade, the fusible link aligned with the blade, and the transmission located outside the tunnel guarantee a minimum pressure
loss. The damper is available in small diameters (startingfrom 100 mm).
5no specific tools, no sealing required
5fast installation
5air-tightness class C according to EN1751
∎suitable for surface-mount in rigid wall and light wall (metal stud gypsum plasterboard wall)
∎not available in diameter 150, 180 and 300 mm
∎minimal distance allowed
EN 1751
C
1. fire damper
2. upper mounting collar
3. lower mounting collar
4. graphite strip
5. sealing cold smoke
6. tape + graphite strip
2
1
3
5
6
4
Range and dimensions CR120-1S
ØDn [mm] 100 125 160 200 250 315
Exceeding damper blade: 20 mm for ØDn 315 mm
1S
194
345
Ød
Ød+20
Y
ØDn [mm] 315
x -
y 20
ØDn Ø
100 180
125 200
160 240
200 275
250 320
315 375
279
299
339
374
419
474
Ød
160
180
220
255
300
355
1s

8Variant CR120-1S-L500
Variant CR120-1S-L500
CR120-1S damper with a tunnel casing extension at the wall side to facilitate the connection to the duct when the supporting
construction is thicker than 100 mm.
5no specific tools, no sealing required
5fast installation
5air-tightness class C according to EN1751
∎suitable for surface-mount in rigid wall and light wall (metal stud gypsum plasterboard wall)
∎not available in diameter 150, 180 and 300 mm
∎minimal distance allowed
EN 1751
C
1. fire damper
2. upper mounting collar
3. lower mounting collar
4. graphite strip
5. sealing cold smoke
6. tape + graphite strip
2
1
3
5
6
4
Range and dimensions CR120-1S-L500
ØDn [mm] 100 125 160 200 250 315
194
500
17,5ØDn-1
20
ØDn Ø
100 180
125 200
160 240
200 275
250 320
315 375
279
299
339
374
419
474
Ød
160
180
220
255
300
355
1s
ØDn P
ZQ
MFUS ONE (X) BFL(T)
P72 80 63
Q123 136 100
Z70 75 58

9
Evolution - kits
Evolution - kits
KITS MFUS Automatic unlocking mechanism with fusible link
KITS ONE T 24 FDCB Spring return actuator ONE 24V (with fusible link T) + bipolar beginning- and end-of-
range switch
KITS ONE T 24 FDCU Spring return actuator ONE 24V (with fusible link T) + unipolar beginning- and end-of-
range switch
KITS ONE T 230 FDCU Spring return actuator ONE 230V (with fusible link T) + unipolar beginning- and end-of-
range switch
KITS ONE T 230 FDCB Spring return actuator ONE 230V (with fusible link T) + bipolar beginning- and end-of-
range switch
KIT ONE-X 24 Spring return actuator ONE-X 24V (with fusible link T)
KIT ONE-X 230 Spring return actuator ONE-X 230V (with fusible link T)
KITS BFL24 Spring return actuator BFL 24V
KITS BFL230 Spring return actuator BFL 230V

10 Evolution - kits
KITS BFL24-ST Spring return actuator BFL 24V with plug (ST)
KITS BFLT24 Spring return actuator BFL 24V with thermo-electric fuse (T)
KITS BFLT230 Spring return actuator BFL 230V with thermo-electric fuse (T)
KITS BFLT24-ST Spring return actuator BFL 24V with thermo-electric fuse (T) and plug (ST)
KITS BFN24 Spring return actuator BFN 24V (BFN kits must be used instead of BFL kits for fire dampers
produced before 1/7/2015)
KITS FDCU MFUS(P) Limit switch ‘open/closed’
KITS SN2 BFL/BFN Auxiliary limit switch ‘open/closed’
KITS ZBAT 72 Black spare part for thermo-electric fuse for BFLT/BFNT
KITS FUS 72 MFUS(P) Fusible link 72°C

11
Options - at the time of order
FUS72 ONE Fusible link 72°C
MECT Testbox for mechanisms 24/48 V (magnet, motor, beginning and end of range switches)
EPP CR60/120 Kit with 4 cover plates (gypsum plasterboard 12.5 mm) for CR60, CR120 in light wall.
INSPECAM
Sturdy digital endoscope for the internal inspection of fire dampers through an optional
inspection opening. The endoscope features a 1 meter long probe with a diameter of
8,2 mm equipped with a dimmable LED, a removable 4x zoom, a colour LCD monitor 3.5”.
Photographic capture 3MP and video capture 720P.
Options - at the time of order
1S Collar for circular surface-mount 1s (100-315 mm)
UL Inspection opening to visually determine the state and the position of the damper, by
using an endoscope.
ONE-X CN Connectors for the bus cables and the power cable.

12 Storage and handling
Storage and handling
As this product is a safety element, it should be stored and handled with care.
Avoid:
• any kind of impact or damage
• contact with water
• deformation of the casing
It is recommended:
• to unload in a dry area
• not to flip or roll the product to move it
• not to use the damper as a scaffold, working table, etc.
• not to store smaller dampers inside larger ones
Installation
General points
∎The installation must comply with the installation manual and the classification report.
∎Axis orientation: see the declaration of performance.
∎Avoid obstruction of adjoining ducts.
∎Product installation: always with closed damper blade.
∎Verify if the blade can move freely.
∎Please observe safety distances with respect to other construction elements. The operating mechanism must also remain
accessible: allow for a clearance of 200 mm around the housing.
∎The air tightness class will be maintained if the damper is installed according to the installation manual.
∎Rf-t fire dampers are always tested in standardised constructions according to EN 1366-2. The achieved results are valid for similar
supporting constructions with a fire resistance, thickness and density equal or superior to the supporting construction used
during the test.
∎The damper must remain accessible for inspection and maintenance.
∎Schedule at least 2 visual checks each year.
2020
2021
2022
2023
2024
TEST
 | 
 | 
 | 
 | 
 | 

13
Installation
Installation at a minimal distance from another damper or from an adjacent supporting construction
≥ 75 mm
≥ 75 mm ≥ 200 mm ≥ 200 mm
≥ 30 mm ≥ 30 mm ≥ 200 mm
≥ 30 mm
1. Principle
According to the European test standard, a fire damper must
be installed at a minimum distance of 75 mm from an adjacent
wall and 200 mm from another damper, unless the solution was
tested at a shorter distance.
This range of Rf-t fire dampers has been successfully tested
and can be installed in a vertical or horizontal supporting
construction, at a distance below the minimum set by the
standard.
For circular dampers, the minimal distance is set to 30 mm.
A
B
2. Certified solution
For the Rf-t fire dampers, the solution consists of the following
elements: A: Universal sealing for minimal distance; B:
Sealing compliant with existing classifications (Declaration of
Performance).
A. Sealing of the opening at the side with minimal distances
between damper and wall/ceiling or another fire damper: rigid
stone wool panels (150 kg/m³) are applied to a depth of min.
400 mm, of which 150 mm on the mechanism side of the wall.
On the non-mechanism side of the wall, the stone wool panels
must be at least flush with the wall.
The surface of this sealing is set between the axes (centres) of
the dampers.
B. Sealing of the rest of the opening according to the existing
classifications for the fire damper (Declaration of Performance).
This also applies to circular dampers that are mounted at a
minimum distance from one another (30 to 200 mm) but at a
distance greater than 75 mm from a wall/ceiling.
Detailed information for each wall/sealing combination can be
found in the respective installation methods.
30 mm
30 mm
30 mm
200
mm
max 45°
max 45°
3. Restrictions
The orientation of the blade axis should be horizontal or
oriented at a maximum of 45°.
A maximum of 3 circular dampers can be installed at a
minimum distance from one another, both vertically and
horizontally (with a maximum cluster of 4 dampers).
Note: when sealing the opening with panels of fire resistant
stone wool, the maximum number of dampers also depends
on the maximum “blank seal” allowed for the selected sealing
material. Please refer to the manufacturer’s instructions for this
information.
1 2
3

14 Installation
Installation in a rigid wall
The product was tested and approved in:
Range Wall type Sealing Classication
Ø 100-315 mm Rigid wall Reinforced concrete ≥ 110 mm Mortar / Gypsum EI 120 (vei no) S - (500 Pa)
Ø 100-315 mm Rigid wall Aerated concrete ≥ 100 mm Gypsum EI 120 (vei no) S - (500 Pa)
Ø 100-315 mm Rigid wall Aerated concrete ≥ 100 mm Mortar EI 120 (vei no) S - (300 Pa)
174
345
≥100
≤ Dn+100 mm (300 Pa)
≤ Dn+80 mm (500 Pa)
≤ Dn+100 mm (300 Pa)
≤ Dn+80 mm (500 Pa)
Plaster /
Mortar
174
345
≤ Dn+100 mm (300 Pa)
≤ Dn+80 mm (500 Pa)
≥100
/110
Plaster /
Mortar
TEST!
B < 200mm
≥ 30
50
50
≥ 30
50
50
B
≥ 30
4. The dampers can be installed at a minimum distance
(≥ 30 mm) from an adjacent wall or from another damper.
1 2
3 4

15
Installation
35%
≥100
5. Make the necessary openings (≤ Dn + 100 mm) /
(≤ Dn + 80 mm) in the wall.
400
≥150 kg/m³
6. Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of
400 mm (150 mm on the mechanism side of the wall) to seal
the opening at the side with minimal distances.
The surface of this sealing is set between the axes (centres) of
the dampers.
Caution: the opening is sealed according to the existing
classification (see next point) when:
- 2 fire dampers are installed at a minimum distance from
one another but at a normal distance (≥ 75 mm) from the
wall or floor/ceiling.
- One single (no cluster) fire damper is located at a minimum
distance (≤ 75 mm) from a wall or floor/ceiling.
Plaster /
Mortar
7. Seal the rest of the opening with standard mortar or gypsum.
5 6
7

16 Installation
Installation in rigid floor
The product was tested and approved in:
Range Wall type Sealing Classication
Ø 100-315 mm Rigid oor Reinforced concrete ≥ 150 mm Mortar EI 120 (hoi no) S - (500 Pa)
Ø 100-315 mm Rigid oor Aerated concrete ≥ 100 mm Mortar EI 90 (hoi no) S - (500 Pa)
60%
≤ ØDn+80 mm
≤ ØDn+80 mm
≥100/
150 mm
100 mm
174
345
Mortar
TEST!
40
≥ 30
≥ 30
≥ 30
B
B < 200 mm
≥ 30
3. The dampers can be installed at a minimum distance
(≥ 30 mm) from an adjacent wall or from another damper.
≥ 100/150 mm
4. Make the necessary openings (≤ Dn + 80 mm) in the floor.
1 2
3 4

17
Installation
400 mm
≥150 kg/m³
5. Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of
400 mm (150 mm on the mechanism side of the floor) to seal
the opening at the side with minimal distances.
The surface of this sealing is set between the axes (centres) of
the dampers.
Caution: the opening is sealed according to the existing
classification (see next point) when:
- 2 fire dampers are installed at a minimum distance from
one another but at a normal distance (≥ 75 mm) from the
wall or floor/ceiling.
- One single (no cluster) fire damper is located at a minimum
distance (≤ 75 mm) from a wall or floor/ceiling.
Mortar
6. Seal the rest of the opening with standard mortar.
5 6

18 Installation
Installation in flexible wall (metal stud gypsum plasterboard wall)
The product was tested and approved in:
Range Wall type Sealing Classication
Ø 100-250 mm Flexible wall Metal studs gypsum plasterboard
Type A (EN 520) ≥ 100 mm
Stone wool ≥ 40 kg/m³
+ cover plates EI 60 (vei no) S - (500 Pa)
≥ 40 kg/m³
2x12.5 / 1x25 mm
A (EN520)
50
ØDn+50 mm
≤ 625 mm
ØDn+50 mm
174 mm
ØDn+200 mm
ØDn+200 mm
ØDn+5 mm
1.
3.
2.
≥ 40 kg/m³
TEST!
A
A
A
A
≥ 30
≥ 30
B
A
A
AA
≥ 30
A 25 mm
B < 200 mm
≥ 30
≤ 625 mm 40 mm
5. The dampers can be installed at a minimum distance
(≥ 30 mm) from an adjacent wall or from another damper.
50
50
2x12.5 / 1x25 mm
A (EN520)
≥ 40 kg/m³
6. Build the drywall and foresee horizontal and vertical studs
around the opening.
In the opening around the dampers (Dn + 50 mm), the void
between the gypsum boards is filled with stone wool with a
minimum density of 40 kg/m³.
1 2
3 4
5 6

19
Installation
400
≥150 kg/m³
7. Mount the dampers in the opening.
Apply rigid stone wool panels (≥ 150 kg/m³) to a depth of
400 mm (150 mm on the mechanism side of the wall) to seal
the opening at the side with minimal distances.
The surface of this sealing is set between the axes (centres) of
the dampers.
Caution: the opening is sealed according to the existing
classification (see next point) when:
- 2 fire dampers are installed at a minimum distance from
one another but at a normal distance (≥ 75 mm) from the
wall or floor/ceiling.
- One single (no cluster) fire damper is located at a minimum
distance (≤ 75 mm) from a wall or floor/ceiling.
ØDn+5 mm
ØDn+200 mm
Plaster jointller
8. Apply cover plates (gypsum plasterboards) to finish the
surface at both sides.
Seal off the space between the plasterboards with jointfiller.
7 8

20 Installation
Installation in flexible wall (metal stud gypsum plasterboard wall), sealing with gypsum
The product was tested and approved in:
Range Wall type Sealing Classication
Ø 100-315 mm Flexible wall Metal studs gypsum plasterboard
Type A (EN 520) ≥ 100 mm Gypsum EI 60 (vei no) S - (500 Pa)
Ø 100-315 mm Flexible wall Metal studs gypsum plasterboard
Type F (EN 520) ≥ 100 mm Gypsum EI 90 (vei no) S - (500 Pa)
≤Dn+80 mm
≤ 625 mm
50
2x12.5 / 1x25 mm
≥ 40 kg/m³
≤Dn+
80 mm
≤Dn+
80 mm
Plaster
A
A
A
A
A
A
A
AA
A
≥ 30
≥ 30
≥ 30
A ≤ 40 mm
B < 200 mm
B
≥ 30
≤ 625 mm 40 mm
Plaster
3. The dampers can be installed at a minimum distance
(≥ 30 mm) from an adjacent wall or from another damper.
50
50
2x12.5 / 1x25 mm
≥ 40 kg/m³
4. Build the drywall and foresee horizontal and vertical studs
around the opening.
In the opening around the dampers, the void between the
gypsum boards is partially filled (up to Dn + 80 mm) with stone
wool with a minimum density of 40 kg/m³.
1 2
3 4