Lindab CIRCULAR Series Installation and operation manual

English
Installation booklet
For further information please refer to the Technical Manual.
As the manufacturer is constantly improving its products, the aesthetic or dimensional features, the technical data, the equipment and acces-
sories indicated could be subject to variations.
CIRCULAR SERIES WHS25 - 500 Pa
Cert. N° 1812-CPR-1226 EN 15650
This is a 16 page installation booklet.
www.mp3-italia.it
*1MUBWHS25UEN* rev 19-05
*1MUBWHS25UEN*
www.lindab.com - Fire dampers are manufactured by MP3 Srl www.mp3-italia.it
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WHS25
LINDAB SAFE

2/16
OVERVIEW
Fire resistance classication according to EN 13501-3-2009
EI 120 S
(500 Pa)
EI 90 S
(500 Pa)
EI 60 S
(500 Pa)
EI 30 S
(500 Pa)
Rigid wall
EI 120 S Installation within vertical rigid wall
Wall minimum thickness 100 mm
Wall minimum density 550 kg/m³
ve (i↔o) DØ
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Flexible wall
EI 120 S Installation within vertical light wall (plasterboard)
Wall minimum thickness 100 mm
With metal frame around re damper
Without plasterboard inll panel
ve (i↔o)
Wall rock wool density up to 80 kg/m³ (optional)
DØ min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
EI 120 S Installation within vertical light wall (plasterboard)
Wall minimum thickness 100 mm
Without metal frame around re damper
With plasterboard inll panel
ve (i↔o)
Wall rock wool density up to 80 kg/m³ (optional)
DØ min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
EI 90 S Installation within vertical light wall (gypsum blocks wall)
Wall minimum thickness 70 mm
Wall minimum density 995 kg/m³
ve (i↔o) D - Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
EI 120 S Installation within vertical light wall (gypsum blocks wall)
Wall minimum thickness 100 mm
Wall minimum density 995 kg/m³
ve (i↔o) DØ
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Floor
EI 90 S Installation within oor
Floor minimum thickness 100 mm
Floor minimum density 650 kg/m³
ho (i↔o) D - Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
EI 120 S Installation within oor
Floor minimum thickness 150 mm
Floor minimum density 650 kg/m³
ho (i↔o) DØ
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø is the minimum and maximum nominal diameter of re dampers in mm
ve Vertical installation
ho Horizontal installation
(i↔o) Origin of re irrelevant
Pa Pascal of depression
E Integrity
I Thermal insulation
S Smoke seal
W Wet method sealing
D Dry method sealing
Cert. N° 1812-CPR-1226 EN 15650

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Fire Batt (Weichschott) sealings
EI 120 S
(300 Pa)
EI 90 S
(300 Pa)
EI 60 S
(300 Pa)
EI 30 S
(300 Pa)
Rigid wall
EI 120 S Installation within vertical rigid wall with Fire Batt (Weichschott) sealing
Wall minimum thickness 100 mm
Wall minimum density 550 kg/m³
Rock wool 140 kg/m³ and endothermic varnish sealing
ve (i↔o)
WØ min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Flexible wall
EI 120 S Installation within vertical light wall (plasterboard) with Fire Batt (Weichschott) sealing
Wall minimum thickness 100 mm
Wall rock wool density up to 80 kg/m³ (optional)
Rock wool density 140 kg/m³ and endothermic varnish sealing
ve (i↔o)
WØ min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
EI 120 S Installation within vertical light wall (gypsum blocks wall) with Fire Batt (Weichschott) sealing
Wall minimum thickness 100 mm
Wall minimum density 995 kg/m³
Rock wool 140 kg/m³ and endothermic varnish sealing
ve (i↔o)
WØ min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Floor
EI 90 S Installation within oor and Fire Batt (Weichschott) sealing
Floor minimum thickness 150 mm
Floor minimum density 650 kg/m³
Rock wool 140 kg/m³ and endothermic varnish sealing
ho (i↔o)
W - Ø min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Installations within vertical light wall (Shaft wall)
EI 90 S
(300 Pa)
EI 60 S
(300 Pa)
EI 30 S
(300 Pa)
Flexible wall
EI 90 S Installation within vertical light wall (Shaft wall)
Wall minimum thickness 90 mm
ve (i↔o) DØ
min 100
max 315
Ø
min 100
max 315
Ø
min 100
max 315
Mechanism type
Manual and compact manual
Manual
Compact manual
1. Manual opening lever
2. Manual closing button
3. Lever position when the blade is open
4. Lever position when the blade is closed
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element that auto-
matically closes the blade when the temperature in the duct exceeds
70°C (or 95°C for the re damper with 95°C thermal fuse).
It is possible to close the damper by pressing the indicated button.
Blade opening mode
The damper must be opened when the ventilation system if
switched o.
It is possible to open the damper blade by rotating the lever anti-
clockwise.

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In case of closed damper as a result of the action of the thermosen-
sitive element, it is possible to manually reopen the damper by rotat-
ing the lever counterclockwise once the element has been replaced.
Position indication microswitches
On request, the re damper can be supplied with position mi-
croswitches (S2 optional) that signal the blade position (open or
closed). Refer to the section Electrical connections for more details.
Closing by remote control
Not available
Temperature calibration of thermosensitive element for auto-
matic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (On request).
CAUTION: The compact mechanism is not interchangeable
with other types of manual mechanism.
Manual with magnet
1. Manual opening lever
2. Manual closing button
3. Lever position when the blade is open
4. Lever position when the blade is closed
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element that auto-
matically closes the blade when the temperature in the duct exceeds
70°C (or 95°C for the re damper with 95°C thermal fuse).
It is possible to close the damper by pressing the indicated button.
It is possible to remotely close the re damper.
The manual command mechanism with magnet is equipped with
an electromagnet which, in case power is interrupted (interuption
magnet version) or when power is supplied (input magnet version),
comands the closing of the damper.
Blade opening mode
The damper must be opened when the ventilation system if
switched o.
In case of closed damper by pressing the closing button or remotely
by electromagnet, it is possible to manually open the re damper
blade by rotating the lever antyclockwise.
In case of closed damper as a result of the action of the thermosen-
sitive element, it is possible to manually reopen the damper by rotat-
ing the lever counterclockwise once the element has been replaced.
Position indication microswitches
It is advisable to install the re damper with position microswitches
(S2 optional) which signal the position of the blade (open or closed).
Refer to the section Electrical connections for more details.
Closing by remote control
With power supply input or interruption magnet.
Temperature calibration of thermosensitive element for auto-
matic damper closing
70 °C±7 °C (Standard)
95 °C±9 °C (On request).
Belimo motorized version
1. Manual closing switch
2. Manual opening lever
3. Position indicator
4. Blade locking lever
Blade closing mode
Automatic closing with thermal fuse.
The control mechanism has a thermosensitive element that auto-
matically closes the blade when the temperature in the duct or in
the room exceeds 72°C (or 95°C for the 95°C version).
To close the damper when the motor is connected, press the switch
on the temperature sensor or cut o the power supply.
Blade opening mode
The damper must be opened when the ventilation system if
switched o.
To open the damper with the electric motor driven actuator, provide
power supply to the motor. Refer to the section Electrical connec-
tions for further information.
To manually open the damper, use the handle supplied and carefully
rotate clockwise to the 90° indicator. To hold the damper in open
position operate on the lever indicated in gure.
During the manual opening of the damper, power must not be sup-
plied to the motor.
Position indication microswitches
The motorized versions are supplied with two microswitches to
show the blade's position (open or closed). Refer to the section Elec-
trical connections for further information.
Closing by remote control
If power to the motor is cut o, the blade will close.
Temperature calibration of thermosensitive element for auto-
matic damper closing
72 °C±7 °C (Standard)
95 °C±9 °C (On request).
Siemens motorized version
1. Manual closing switch
2. Manual opening lever
3. Screwdriver
4. Position indicator
Blade closing mode
Automatic closing with thermal fuse.

5/16
The control mechanism has a thermosensitive element that auto-
matically closes the blade when the temperature in the duct or in
the room exceeds 72°C (or 95°C for the 95°C version).
To close the damper when the motor is connected, press the switch
on the temperature sensor or cut o the power supply.
Blade opening mode
The damper must be opened when the ventilation system if
switched o.
To open the damper with the electric motor driven actuator, provide
power supply to the motor. Refer to the section Electrical connec-
tions for further information.
To manually open the damper, use the handle supplied and carefully
rotate counterclockwise to the 90 °C indicator. To hold the damp-
er in open position, rotate the screw anticlockwise as shown in the
picture.
During the manual opening of the damper, power must not be sup-
plied to the motor.
Position indication microswitches
The motorized versions are supplied with two microswitches to
show the blade's position (open or closed). Refer to the section Elec-
trical connections for further information.
Closing by remote control
If power to the motor is cut o, the blade will close.
Temperature calibration of thermosensitive element for auto-
matic damper closing
72 °C±7 °C (Standard)
95 °C±9 °C (On request).
ELECTRICAL CONNECTIONS
Electrical wiring
Electrical connections must be done by qualied and trained people.
Switch o the power supply before starting any work on the electric
elements. Never switch on the power supply during electrical con-
nections.
Manual and compact manual
S1-25 electric board (S2 optional) for blade position microswitches (manual)
S1-25-B electric board (S2 optional) for blade position microswitches (compact
manual)
1 Microswitch contacts for blade position
FCU Closed blade contact
DCUOpen blade contact
NO Normally open
C Common
NF Normally closed
Manual with magnet - MR/MI version (the magnet is powered
using 24 V DC/48 V DC through S0-25 electric board)
S0-25 electronic board (S2 optional) for 24V DC / 48V DC power supply. Blade
position microswitches included
1 Microswitch contacts for blade position
2 Magnet power supply contacts. 24V DC or 48V DC. Keep to the polarity for
input magnet
MAG Magnet power supply
FCU Closed blade contact
DCUOpen blade contact
NO Normally open
C Common
NF Normally closed

6/16
S2 microswitches position for manual control and magnetic
control
1. The re damper's blade is open (the air ow is allowed)
2. The re damper's blade is closed (the air ow is not allowed)
FCU Closed blade contact
DCUOpen blade contact
NO Normally open
C Common
NF Normally closed
Motorized version
Belimo servomotor:
BFL24T, BFN24T, BF24T, BFL230T, BFN230T, BF230T.
Siemens servomotor:
GRA126, GNA126, GGA126.
Siemens servomotor:
GRA326, GNA326, GGA326.
Motorized re dampers electical wiring
To connect the dampers to the power supply, proceed as follows:
• Check that the voltage and electrical frequency are equivalent to
those of the motor of the servomotor (check the motor's informa-
tion label);
• Make the connections as shown in the below diagram.
Microswitches position for motorized version
24V AC/DC power supply
/- Negative (DC) or neutral (AC) black wire
~/+ Positive (DC) or phase (AC) red wire
230V AC power supply
N Neutral blue wire
L Phase brown wire
Microswitches position contacts
S1 Common closed damper microswitch
S2 Normally closed, closed damper microswitch
S3 Normally opened, closed damper microswitch
S4 Common open damper microswitch
S5 Normally closed, open damper microswitch
S6 Normally opened, open damper microswitch

7/16
Electrical specications
Manual and compact manual
Manual with magnet
Belimo motorized version
Siemens motorized version
Voltage and power consumption -
Magnet (WHS25MR/MI):
24/48 V DC (automatic voltage switching
on S0-25 electric board for 24 V magnet)
Power interrruption magnet (MR):
P = 1,6 W Power input magnet (MI): P = 3,4 W
Motor 24 V AC/DC (WHS25VSB):
Belimo BFL24T
Opening: 2,5 W
In stand-by: 0,8 W
Motor 230 V AC (WHS25DSB):
Belimo BFL230T:
Opening: 3,5 W
In stand-by: 1,1 W
Motor 24 V AC/DC (WHS25VSS):
Siemens GRA126
Opening: 3,5 W
In stand-by: 2 W
Motor 230 V AC (WHS25DSS):
Siemens GRA326
Opening: 4,5 W
In stand-by: 3,5 W
Microswitches position contacts Manual control version: 12 V DC / 2 A
125 V AC / 0,1 A
Motorized version:
Siemens: AC 24 V…230 V / 6 (2) A
Belimo: DC 5 V…AC 250 V / 1 mA…3 A (0,5 A)
Blade closing time Spring: 1 s motor: < 30 s
Protection degree IP42 IP42 MAGNETIC VERSION
IP54 MOTORIZED VERSION
TECHNICAL DATA
The sizes shown are in mm.
Dimension
Ø mm 100 125 140 150 160 180
S blade
exposition mm000000
Lp mm 38 38 38 38 38 38
Ø mm 200 224 250 280 300 315
S blade
exposition mm 0 1 0 10 20 28
Lp mm 38 38 57 57 57 57
Lp Overlap length between re damper and duct
MAINTENANCE AND INSPECTIONS
Fire dampers and control mechanisms do not require routine main-
tenance.
Extraordinary maintenance (repairs) and periodic inspection opera-
tions are the responsibility of the ventilation system operator.
The implementation of a periodic inspection plan allows to guaran-
tee the eciency and functionality of the re dampers for the re
safety of the building.
Periodic inspection and cleaning
Periodic inspection shall be performed in accordance with the re-
quirements of the law or by the building regulations or other local
regulations.
In the absence of specic regulations (or to their complement), in ac-
cordance with point 8.3 of the EN 1560 standard, it is recommended
to carry out the following control activities at intervals of no more
than 6 months:
• If the damper is connected to a remote control or command sys-
tem (eg BMS or alarm or re detection), that responds correctly to
commands by performing at least one opening and closing test
and verifying the correct movement of the blade and the correct
functioning of the microswitches (limit switches).
• If the damper is not connected to a remote control or command
system, manually execute an opening and closing test and check
the correct movement of the blade and the correct functioning of
the microswitches (limit switches) if present.
Together with the control activities, it is recommended to visually
verify the absence of corrosion, the integrity of the electrical wiring
and the sealing of the construction support.
Damper cleaning is included in the ordinary maintenance activities
of the ventilation ducts.
Fire dampers can be cleaned with a dry or wet cloth.

8/16
In the case of resistant dirt, it is possible to use normal household
detergents.
If prescribed for the type of building, it is possible to use disinfectant
detergents.
The use of detergents or mechanical abrasive cleaning systems is not
permitted.
These indications comply with the standards EN 15650 annex D and
EN 15423 annex C.
Repair
For safety reasons, repair activities involving re-ghting compo-
nents must be carried out only by qualied personnel.
Only original spare parts supplied by the re damper manufacturer
must be used.
A functional test must be performed after each repair.
.
At the end of the inspection, cleaning or repair operations, check that
the re damper is in the normal operating position.
Keep records of all inspections, repair activities, any problems en-
countered and their resolution.
This practice, even when not mandatory, is very useful in practice.
Disposal
Disposal in case of destruction must be carried out in accordance
with national legislation. For electrical and electronic parts also refer
to EU Directive 2011/65.
INSTALLATION
The sizes shown are in mm.
It is recommended to perform a functional test before Installation to
exclude possible damage during transport and another test immedi-
ately after installation to exclude accidental damage to the product
and interference with mounting components.
Fixing method
1. Fixing screws
For further details please refer to each specic installation.
Blade rotation axis positioning
The re damper can be installed with the blade axis positioned verti-
cally or horizontally or tilted at any angle.
Installation of exible connectors in order to balance out the
ventilation ducts expansion
CAUTION: Refer anyway to law and national standardization.
Flexible connectors compensate any duct thermal expansion and
wall bending in case of re.
Flexible connectors are used to limit re damper stresses due to ex-
ternal forces in case of re and to preserve re resistance class.
In general it is always appropriate the use of exible connectors for
the followings installations:
– light walls;
– Plasterboard and rock wool or Fire Batt (Weichschott) sealing;
– Applique xing system.
Flexible connector must be normal ammability and in case of re
the grounding bonding should disconnet to guarantee the com-
plete separation between re damper and connected air duct.
When exible connectors made of conductive material (e.g. alumi-
num) are used, no additional grounding bonding is required.
Despite exible connector installation, the re damper must be in-
stalled in the construction support so that its weight does not aect
damper’s installation position both during normal operation and in
case of re.
It is recommended not to compress exible connectors in the in-
stallation phase.
Flexible connector must be at least 100mm long and in order that
possible duct thermal expansions are balanced.
Take care that the exible connector does not interfer with opening
/ closing movement of the blade.
Transfer Application (application not connected to air ducts on
one or both sides)
Following tests performed as per EN 1366-2, section 6.3.6 Standard,
it is possible to install the re damper free from air duct from one or
both sides.
• Attention: re resistance classication for transfer application is
conform to section Fire resistance classication according to EN
13501-3-2009 limited to EI 120S if the ducted classication is high-
er.
• End cap with mesh shall be mounted on the side not connected
to air duct.
• End cap with mesh is made from galvanized steel sheet.
• End cap with mesh is supplied loose from the re damper.
Components (Transfer Application)
1. End cap with mesh (to x to re damper with steel screws)
2. Fire damper

9/16
Technical data (Transfer Application)
1. Mechanism side
2. Mechanism opposite side
3. End cap with mesh
L1 End cap length mechanism side
L2 End cap length mechanism
opposite side
Ø Fire damper nominal diameter
Length of end cap with mesh depending on re damper di-
ameter Ø.
Ø L1 L2
100 40 40
125 40 40
140 40 40
150 40 40
160 40 40
180 40 40
200 40 60
224 40 40
250 60 80
280 60 100
300 60 100
315 60 120
Ø Fire damper nominal diameter
L1 End cap length mechanism side
L2 End cap length mechanism opposite side
Minimum distances
It is recommended to keep enough space for using the control
mechanism or for maintenance.
In accordance with Articles 7 and 13 of EN 1366-2 respect the mini-
mum distances indicated below.
Minimum distances
1. Side vertical wall
2. Floor
a. Distance between re dampers installed within vertical wall
b. Distance between re damper and vertical lateral wall / oor
c. Distance between re dampers installed within oor
d. Distance between re damper and vertical lateral wall
Fire dampers installed within vertical wall Fire dampers installed within oor
Installation a [mm] b [mm] c [mm] d [mm]
Rigid
wall
EI 120 S Installation within vertical rigid wall 200 75 - -
Flexible wall
EI 120 S Installation within vertical light wall (plasterboard) 200 75 - -
EI 120 S Installation within vertical light wall (plasterboard) 200 75 - -
EI 120 S Installation within vertical light wall (gypsum blocks wall) 200 75 - -
EI 90 S Installation within vertical light wall (gypsum blocks wall) 200 75 - -
Floor
EI 120 S Installation within oor - - 200 75
EI 90 S Installation within oor - - 200 75

10/16
Fire Batt (Weichschott) sealings
Fire dampers installed within vertical wall Fire dampers installed within oor
Installation a [mm] b [mm] c [mm] d [mm]
Rigid
wall
EI 120 S Installation within vertical rigid wall with Fire Batt
(Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 200 75 - -
Flexible wall
EI 120 S Installation within vertical light wall (plasterboard) with
Fire Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 200 75 - -
EI 120 S Installation within vertical light wall (gypsum blocks wall)
with Fire Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing 200 75 - -
Floor
EI 90 S Installation within oor and Fire Batt (Weichschott) sealing
Rock wool 140 kg/m³ and endothermic varnish sealing - - 200 75
Installations within vertical light wall (Shaft wall)
Fire dampers installed within vertical wall Fire dampers installed within oor
Installation a [mm] b [mm] c [mm] d [mm]
Flexible
wall
EI 90 S Installation within vertical light wall (Shaft wall) 200 75 - -
Construction supports characteristics
The European standard for re dampers foresees a precise correlation
between the wall/oor characteristics and the re resistance class
obtained, as well as the correlation between wall/oor used for the
test and wall/oor used for the actual installation.
The test results obtained on a type of wall/oor are valid also for
walls/oor of the same type but with greater thickness and/or densi-
ty than those used in the test.
For plasterboard walls, the test results are also valid for walls with a
greater number of plasterboard layers on each side.
As a result, the indicated thickness and density characteristics are to
be considered as minimum values.
The wall/oor in which the re dampers are installed must be re
class certied according to the standards foreseen for the structure.
Rigid walls
Can be made with aerated concrete blocks, poured concrete, con-
crete panels, perforated cell elements in concrete or brick in accord-
ance with the following characteristics:
• minimum thickness 100 mm;
• minimum density 550 kg/m³.
The use of a reinforcing beam above the opening is recommended
for walls made from concrete blocks, bricks or in concrete cell ele-
ments.
For walls built with perforated elements, it is also recommended that
the area of the opening be made from full elements (for example
aerated concrete blocks) to guarantee the correct adhesion of the
mortar.
1. Reinforcing beam
Light plasterboard vertical walls
During testing, light plasterboard walls have been used with the fol-
lowing characteristics:
• U-shaped horizontal metal frame (50 mm) and C-shaped vertical
frame (49 mm) made from 0,6 mm thick sheet metal;
• Vertical proles placed with a maximum spacing of 1000 mm be-
tween each other (625 mm only for installations with Weich-
schott sealing);
• Filling made of rock wool with density up to 80 kg/m³ (optional);
• Each side is made from two plasterboard layers 12,5 mm thick, un-
alinged to avoid alignment between the joints of the layer above
and below.
The following indications are given for the installation walls:
• metal proles minimum width: 49 mm;
• metal proles minimum thickness: 0,6 mm;
• Vertical proles placed with a maximum spacing of 1000 mm be-
tween each other (625 mm only for installations with Weich-
schott sealing);
• vertical prole xing with selfthreading screws or by clinching to
the bottom horizontal prole and insertion in the top horizontal
prole;
• proles xed using self-threading screws or by clinching on every
intersection.
• installation of a frame around the damper with base and height
where shown in the installation instructions;
• Filling made of rock wool with density up to 80 kg/m³ (optional);
• each side is made from two plasterboard layers 12,5 mm minu-
mum thick, unalinged to avoid alignment between the joints of
the layer above and below.
• the front plasterboards layers are xed using long enough screws
to pass through the lower plasterboard and attach to the steel pro-
le underneath.

11/16
1. Plasterboard thickness 12,5 mm
2. Rock wool density up to 80 kg/m³ (optional)
3. Horizontal U-shaped prole
4. Vertical C-shaped prole
5. Self-drilling screw Ø 3,5 X 25 mm
6. Self-drilling screw Ø 3,5 X 35 mm
Light plasterboard vertical walls (Shaft wall)
The following indications are given for the installation walls:
• U-shaped horizontal metal frame (minimum width 50 mm) and
C-shaped vertical frame (minimum width 49 mm) made from
sheet metal (minimum thickness 0,6 mm);
• vertical proles placed with a maximum spacing of 1000 mm be-
tween each other;
• vertical prole xing with selfthreading screws or by clinching to
the bottom horizontal prole and insertion in the top horizontal
prole;
• proles xed using self-threading screws or by clinching on every
intersection.
• installation of a frame around the damper with base and height
where shown in the installation instructions;
• one side is made from two plasterboard layers 20 mm minumum
thick, unalinged to avoid alignment between the joints of the layer
above and below;
• the front plasterboards layers are xed using long enough screws
to pass through the lower plasterboard and attach to the steel pro-
le underneath.
1. Plasterboard thickness 20 mm
2. Horizontal U-shaped prole
3. Vertical C-shaped prole
4. Self-drilling screw Ø 3,5 X 35 mm
5. Self-drilling screw Ø 3,5 X 55 mm

12/16
Gypsum blocks light walls
Gypsum blocks wall can be built with special solid gypsum blocks
with interlocking shaped edges as indicated in the supplier's instruc-
tions and according to the following characteristics:
• minimum thickness 70 or 100 mm according to the type and re-
sistance class required;
• minimum density 995 kg/m³.
It is generally advisable to rst build the wall and then provide the
opening for the re damper.
Aerated concrete oors
Aerated concrete oors can be built during installation or with pre-
formed slabs with interlocking shaped edges according to the fol-
lowing characteristics:
• minimum thickness 100 or 150 mm according to the type and re-
sistance class required;
• minimum density 650 kg/m³
Poured concrete oors
Poured concrete oors can be built during installation or with pre-
formed slabs with interlocking shaped edges according to the fol-
lowing characteristics:
• minimum thickness 100 or 150 mm according to the resistance
class required;
• minimum density 2200 kg/m³.
Installations within vertical rigid wall
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
Secure the re damper to the construction support with:
• 4 screws M6 X 45 mm (minimum)
• 4 steel washer
• 4 anchors M6 x 45 mm (minimum)
Filling
It is not necessary to insert any material between construction sup-
port and damper.
Fire resistance classication “D”hole size
[mm]
Wall minimum thickness“S”
[mm]
EI 120 S Installation within vertical rigid wall
Wall minimum density 550 kg/m³ EI 120 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 100
Lp Overlap length between re damper and duct: see section Dimension
D Hole size: see table above
1. Screw M6 X 45 mm (minimum)
2. Steel washer
3. Anchor M6 x 45 mm (minimum)
Installations within vertical light wall (plasterboard)
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
Secure the re damper to the construction support with:
• 4 self-drilling screws Ø 3,5 X 45 mm
• 4 steel washer
Filling
It is not necessary to insert any material between construction sup-
port and damper.

13/16
Fire resistance classication “D”hole size
[mm]
Wall minimum thickness“S”
[mm]
EI 120 S Installation within vertical light wall (plasterboard)
Wall rock wool density up to 80 kg/m³ (optional)
With metal frame around re damper
Without plasterboard inll panel
EI 120 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 100
EI 120 S Installation within vertical light wall (plasterboard)
Wall rock wool density up to 80 kg/m³ (optional)
Without metal frame around re damper
With plasterboard inll panel
EI 120 S
(500 Pa) (Ø + 125) x (Ø + 125) (square hole) 100
EI 120 S Installation within vertical light wall (plasterboard)
with metal frame around the damper
1. Plasterboard thickness 12,5 mm
2. Self-drilling screw Ø 3,5 X 45 mm
3. Washer
4. Metal frame
Lp Overlap length between re damper and duct: see section Dimension
D Hole size: see table above
EI 120 S Installation within vertical light wall (plasterboard)
without metal frame around the damper
1. Plasterboard thickness 12,5 mm
2. Plasterboard inll panel, thickness 12,5 mm
3. Plaster putty
4. Self-drilling screw Ø 3,5 X 45 mm
5. Washer
Lp Overlap length between re damper and duct: see section Dimension
D Hole size: see table above
Installations within vertical light wall (gypsum blocks wall)
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
Secure the re damper to the construction support with:
• 4 screws M6 X 45 mm (minimum)
• 4 steel washer
• 4 anchors M6 x 45 mm (minimum)
Filling
It is not necessary to insert any material between construction sup-
port and damper.
Fire resistance classication “D”hole size
[mm]
Wall minimum thickness“S”
[mm]
EI 120 S Installation within vertical light wall (gypsum blocks wall)
Wall minimum density 995 kg/m³ EI 120 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 70
EI 90 S Installation within vertical light wall (gypsum blocks wall)
Wall minimum density 995 kg/m³ EI 90 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 100

14/16
D Hole size: see table above
S Wall minimum thickness: see table above
Lp Overlap length between re damper and duct: see section Dimension
1. Screw M6 X 45 mm (minimum)
2. Steel washer
3. Anchor M6 x 45 mm (minimum)
Installations within oor
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Floor opening
A opening must be provided in the oor as indicated in the table
and in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
The re damper must be positioned just above the oor as indicated
in the drawing.
Secure the re damper to the construction support with:
• 4 screws M6 X 45 mm (minimum)
• 4 steel washer
• 4 anchors M6 x 45 mm (minimum)
Filling
It is not necessary to insert any material between construction sup-
port and damper.
Fire resistance classication “D”hole size
[mm]
Floor minimum thickness“S”
[mm]
EI 120 S Installation within oor
Floor minimum density 650 kg/m³ EI 120 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 150
EI 90 S Installation within oor
Floor minimum density 650 kg/m³ EI 90 S
(500 Pa) (Ø + 100) x (Ø + 100) (square hole) 100
The re damper must be positioned just above the oor as indicated in the
drawing.
1. Floor
2. Fire damper
D Hole size: see table above
S Floor minimum thickness: see table above
Lp Overlap length between re damper and duct: see section Dimension
1. Screw M6 X 45 mm (minimum)
2. Steel washer
3. Anchor M6 x 45 mm (minimum)
Installations within vertical wall with Fire Batt (Weichschott) sealing
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Refer to the section Indications for the correct duct suspension and
for damper connection for further information.

15/16
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
The re damper has to be xed at the bottom and suspended from
the ceiling.
Filling
Fill the space between the damper and the wall using Fire Batt
(Weichschott) sealing made from two rock wool panels with mini-
mum thickness of 50 mm and minimum density of 140 kg/m³.
The panels must be covered on both faces of the wall with endo-
thermic varnish type PROMASTOP E PASTE or HILTI CFS-CT (mini-
mum thickness of 1 mm) and with an internal perimeter sealant type
PROMASTOP E PASTE or HILTI CFS-S ACR (minimum thickness of 1
mm).
Don't use xing screws
Fire resistance classication “D”hole size
[mm]
Wall minimum thickness“S”
[mm] Sealing
Rigid wall
EI 120 S Installation within rigid vertical wall with Fire Batt (Weichschott) sealing
Wall minimum density 550 kg/m³ EI 120 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole) 100 Rock wool 140 kg/m³ and
endothermic varnish sealing
Flexible wall
EI 120 S Installation within vertical light wall (plasterboard) with Fire Batt (Weichschott) sealing
Wall rock wool density up to 80 kg/m³
(optional) EI 120 S (300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole) 100 Rock wool 140 kg/m³ and
endothermic varnish sealing
EI 120 S Installation within vertical light wall (gypsum blocks) with Fire Batt (Weichschott) sealing
Wall minimum density 995 kg/m³ EI 120 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole) 100 Rock wool 140 kg/m³ and
endothermic varnish sealing
1. Rock wool panel 50 mm thick with 140 kg/m³ density.
2. PROMASTOP E PASTE or HILTI CFS-S ACR type sealant
3. PROMASTOP E PASTE or HILTI CFS-CT endothermic varnish
4. Wall indicated in the table
Lp Overlap length between re damper and duct: see section Dimension
D Hole size: see table above
S Wall minimum thickness: see table above
Installation within oor with Fire Batt (Weichschott) sealing
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Refer to the section Indications for the correct duct suspension and
for damper connection for further information.
Floor opening
A opening must be provided in the oor as indicated in the table
and in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
The re damper must be positioned just above the oor as indicated
in the drawing.
Filling
Fill the space between the damper and the oor using Fire Batt
(Weichschott) sealing made from two rock wool panels with mini-
mum thickness of 50 mm and minimum density of 140 kg/m³.
The panels must be covered on both faces of the wall with endo-
thermic varnish type PROMASTOP E PASTE or HILTI CFS-CT (mini-
mum thickness of 1 mm) and with an internal perimeter sealant type
PROMASTOP E PASTE or HILTI CFS-S ACR (minimum thickness of 1
mm).
Don't use xing screws
Fire resistance classication “D”hole size
[mm]
Floor minimum thickness“S”
[mm] Sealing
EI 90 S Installation within oor and Fire Batt (Weichschott) sealing
Floor minimum density 650 kg/m³ EI 90 S
(300 Pa)
(Ø + 600 max) x (Ø + 600
max)
(rectangular hole) 150 Rock wool 140 kg/m³ and
endothermic varnish sealing

16/16
The re damper must be positioned just above the oor as indicated in the
drawing.
1. Floor
2. Fire damper
1. Rock wool panel 50 mm thick with 140 kg/m³ density.
2. PROMASTOP E PASTE or HILTI CFS-S ACR type sealant
3. PROMASTOP E PASTE or HILTI CFS-CT endothermic varnish
Lp Overlap length between re damper and duct: see section Dimension
D Hole size: see table above
S Floor minimum thickness: see table above
Installation within vertical light wall (Shaft wall)
Refer to the section Construction supports characteristics for further
information.
Comply with the minimum distances indicated on section Minimum
distances .
Wall opening
A opening must be provided in the wall as indicated in the table and
in the drawing
Damper positioning
Position the damper in the opening so that the side of the closing
mechanism extends as indicated in the drawing.
Be careful not to damage the external intumescent gasket.
Secure the re damper to the construction support with:
• 4 screws M6 X 45 mm (minimum)
• 4 steel washer
Filling
It is not necessary to insert any material between construction sup-
port and damper.
Fire resistance classication “D”hole size
[mm]
Wall minimum thickness“S”
[mm]
EI 90 S Installation within vertical light wall (Shaft wall)
EI 90 S
(300 Pa) (Ø + 100) x (Ø + 100) (square hole) 90
1. Plasterboard thickness 20 mm
2. Plasterboard arch inll, thickness 20 mm
3. Mortar M-10, EN998-2 or plaster putty
4. Metal frame
5. Self-drilling screw Ø 3,5 X 45 mm
6. Screw M6 X 45 mm (minimum)
7. Steel washer
D Hole size: see table above
Lp Overlap length between re damper and duct: see section Dimension