Trox Technik FK2-EU User manual


General information
Application
FK2-EU WITH BELIMO
SPRING RETURN
ACTUATOR (FIG. SIZE 2)
FK2-EU with fusible link for
72 °C or 95 °C
CE compliant according to
European regulations
With TROXNETCOM as an
option
ATEX CERTIFICATION
ATEX certification
TESTED TO VDI 6022
Tested to VDI 6022
FK2-EU
FOR DIVERSE APPLICATIONS
Nominal sizes 200 × 100 – 1500 × 800 mm, can be ordered in increments
of 1 mm
Low differential pressure and sound power level
Explosion-proof construction (ATEX) as an option
Optionally available as an upstream shutter of an air transfer unit
Can also be used as an air transfer damper
Optional stainless steel casing or powder-coated casing for increased
corrosion protection
Optionally available with thermal insulation to prevent condensation
Integration into the central BMS with TROXNETCOM
Universal installation options
Optional equipment and accessories
Electric actuator 24 V/230 V
Release temperature 72/95 °C
Useful additions
Duct smoke detectors
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Fire dampers with CE marking and declaration of performance, for the isolation of duct penetrations between two fire compartments in the event of a fire
To prevent the propagation of fire and smoke through ductwork to adjacent designated fire compartments
Special features
Declaration of performance in accordance with European Construction Products Regulation
Classification according to EN 13501-3, up to EI 240 (v , h , i ↔ o) S
Complies with the requirements of EN 15650
Tested for fire resistance properties in accordance with EN 1366-2 (300 Pa and 500 Pa negative pressure)
Certified mortar-based installation with reduced distances of 40 mm to supporting components or 60 mm between two fire dampers (flange to flange)
Perimeter gap may be up to 225 mm for mortar-based installation
2 inspection accesses with bayonet fixing for single-handed operation
Meets the hygiene requirements of VDI 6022-1, VDI 3803-1, DIN 1946-4, EN 13779, of Ö-Norm H 6020 and H 6021, and of SWKI
Corrosion protection according to EN 15650 in connection with EN 60068-2-52
Closed blade air leakage to EN 1751, class 2
Casing air leakage to EN 1751, class C (B + H ≤700, class B)
Low differential pressure and sound power level
Any airflow direction
Integration into the central building management system with the international standard fire damper system in accordance with IEC 62026-2 with AS interface is
possible
Classification
Performance class up to EN 13501-3, up to EI 240 (v , h , i ↔ o) S
Nominal sizes
B × H: 200 × 100 – 1500 × 800 mm (Intermediate sizes can be ordered in 1 mm increments)
L: 305 mm or 500 mm
Variants
With fusible link
With fusible link for use in potentially explosive atmospheres
With spring return actuator
With spring return actuator for use in potentially explosive atmospheres
With spring return actuator and duct smoke detector
With cover grille on both sides as an upstream shutter of an air transfer unit
With spring return actuator, duct smoke detector and cover grilles at both ends for use as an air transfer damper according to general
building inspectorate licence Z-6.50-2540
The following applies to Germany:
If fire dampers with a purely mechanical shut-off element are to be used as an upstream shutter of an air transfer unit, the local building regulations must be observed.
Usually the use of such upstream shutters of air transfer units is restricted to pressure differential systems.
Parts and characteristics
Release temperature 72 °C or 95 °C (for use in warm air ventilation systems)
Single-handed operation
Explosion-proof constructions for zones 1, 2, 21, 22
Attachments
Limit switch for damper blade position indication
Spring return actuator for 24 V AC/DC or 230 V AC supply voltage
Limit switch for damper blade position indication for use in potentially explosive atmospheres
Spring return actuator for 24 – 230 V supply voltage, for use in potentially explosive atmospheres
Network module for the integration with AS-i or LON networks
Spring return actuator and wired duct smoke detector with 230 VAC, 50/60 Hz or 24 VDC supply voltage
All attachments can be retrofitted
Accessories
Installation kit ES for dry mortarless installation in lightweight partition walls, compartment walls, safety partition walls and radiation protection walls with metal
support structures or steel support structures, and cladding on both sides
Installation kit ES for dry mortarless installation in timber stud walls/half-timbered construction as well as solid wood and cross laminated timber walls
e o
e o

Installation kit ES for dry mortarless installation in shaft walls with metal support structure or steel support structure as well as shaft walls without metal support
structure
Installation kit ES for dry mortarless installation in wooden beam ceilings and solid wood ceilings
Installation kit E3 for dry mortarless installation in solid walls in an existing installation subframe E1/E2 of the FK-K90 or FK-EU
Installation kit EW for dry mortarless installation in solid walls with installation subframe
Installation kit GM for installation into solid non-load-bearing walls with flexible ceiling joint
Installation kit WA for dry mortarless installation on the face of solid walls and ceiling slabs
Installation kit WE for dry mortarless installation remote from solid walls, remote from solid ceiling slabs, and remote from lightweight partition walls with metal
support structure and cladding on both sides
Installation kit GL for dry mortarless installation in lightweight partition walls with metal support, cladding on both sides and flexible ceiling joint
Cover grille
Flexible connectors
Circular spigots
Profile connecting frame
Useful additions
Duct smoke detector RM-O-3-D
Duct smoke detector with airflow monitor RM-O-VS-D
Construction features
Rectangular or square construction, rigid casing, both flanges with fixing holes
Suitable for the connection of ducts, cover grilles, spigots, flexible connectors or profile connecting frames
The release mechanism is accessible and can be tested from the outside
2 inspection access panels, Ø110 mm, which can be opened without any tools
Remote control with spring return actuator
Materials and surfaces
TROX casing:
Galvanised sheet steel
Galvanised sheet steel, powder-coated RAL 7001
Stainless steel 1.4301
Damper blade:
Special insulation material
Special insulation material with impregnation
ODA construction:
Damper casing made of galvanised sheet steel with powder coating and thermal insulation, damper blade made of special insulating material with impregnation
(only in conjunction with spring return actuator)
Other components:
Damper blade shafts and drive linkage made of galvanised steel, in constructions -1 and -2 made of stainless steel
Plastic bearings
EPDM and TPE seals
The construction variants with stainless steel or powder-coated casing meet even more critical requirements for corrosion protection. Detailed listing on request.
Standards and guidelines
Construction Products Regulation
EN 15650 Ventilation for buildings – Fire dampers
EN 1366-2 Fire resistance tests for service installations – Fire dampers
EN 13501-3 Fire classification of construction products and building elements
EN 1751 Ventilation for buildings – Air terminal devices
2006/42/EC – Machinery Directive
Supply package
If attachments and accessories are supplied from the factory with the fire dampers, they are already taken into account in the order code. Depending on the installation
situations, supplementary materials for assembly and fixing may be needed to ensure proper installation, e.g. mortar, screws, mineral wool, etc. Such materials are not
included in the supply package, unless they are expressly described as included in the supply package. The selection of additional attachments or accessories as well
as the identification and provision of materials for assembly and fixing is the responsibility of those involved in the building project and must be done taking into account
the required classification.

Maintenance
The functional reliability of the fire damper must be tested at least every six months; this has to be arranged by the owner of the ventilation system; functional tests
must be carried out in compliance with the basic maintenance principles stated in EN 13306 and DIN 31051. If 2 consecutive tests, one 6 months after the other,
are successful, the next test on the fire damper can be conducted one year later.
A functional test involves closing the damper blade and opening it again; with a spring return actuator this can be done via remote control
Fire dampers must be included in the regular cleaning schedule for the ventilation system
For details on functional tests, maintenance and inspection, refer to the installation and operating manual
Technical data
Nominal sizes: 200 × 100 to 1500 × 800 mm
Casing lengths: 305 and 500 mm
Volume flow rate range: up to 14400 l/s / up to 51840 m³/h
Differential pressure: up to 2000 Pa
Temperature range: -20 – 50 °C
Upstream velocity*: Standard construction ≤ 8 m/s, construction with spring return actuator ≤ 12 m/s, construction with explosion-proof actuator ExMax/RedMax-15-
BF TR ≤ 10 m/s
* Data applies to uniform upstream and downstream conditions for the fire damper
Incorrect use:
Without specially approved attachments in areas with potentially explosive atmospheres
As a smoke control damper
Outdoors without sufficient protection against the effects of weather
In atmospheres where chemical reactions, whether planned or unplanned, may cause damage to the fire damper or lead to corrosion
The following applies to installation in Germany:
Do not use it in extract air systems in commercial kitchens
Use as air transfer damper only according to general type approval Z-6.50-2540
Do not use in combined penetration seal
Approvals under building regulations may be required for the use of upstream shutters of air transfer units. This must be checked and applied for by others
Flame-resistant building materials that form no dripping droplets (elastomer foams) have to be at least of fire rating class C - s2, d0 according to the German M‑VV
TB (since 2019/01) guideline. The applicable national building regulations must be adhered to.
TECHNICAL INFORMATION
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Function, Technical Data, Quick sizing, Specification Text, Order Code
In the event of a fire, fire dampers shut automatically to prevent the propagation of fire and smoke through ductwork to adjacent designated fire
compartments. In the event of a fire, the damper is triggered at 72 °C or at 95 °C (use in warm air ventilation systems) by a fusible link. The release
mechanism is accessible and can be tested from the outside.
One or two limit switches (optional attachment) can be used to indicate the damper blade position.
Functional describtion Nominal sizes

Arrangement of the spring return actuator:
[A] = horizontally arranged
[B] = vertically arranged
Sizes
Damper blade (30 mm thick) with lip seal for sizes 1 and 2, damper blade (40 mm thick) with travel stop seal for size 3.
Construction with fusible link Size 1
Size 2 and 3
1)

① Casing
② Damper blade
③ Inspection access
④ Handle
⑤ Interlock
⑥ Thermal release mechanism with fusible link
In the event of a fire, fire dampers shut automatically to prevent the propagation of fire and smoke through ductwork to adjacent designated fire
compartments. In the event of a fire, the damper is triggered at 72 °C or at 95 °C (use in warm air ventilation systems) by a fusible link. The release
mechanism is accessible and can be tested from the outside. One or two limit switches (optional attachment) can be used to indicate the damper blade
position.
Construction with Belimo spring return actuator Size 1
Size 2 and 3

① Casing
② Damper blade
③ Inspection access
④ Spring return actuator
⑤ Thermoelectric release mechanism with temperature sensor
The spring return actuator enables the motorised opening and closing of the damper blade; it can be activated by the central BMS. In the event of a fire, the
damper is triggered thermoelectrically at 72 °C or 95 °C (use in warm air ventilation systems). As long as power is supplied to the actuator, the damper
blade remains open. If the supply voltage fails, the damper closes (power off to close). Motorised fire dampers can be used to shut off ducts. The torque of
each actuator is sufficient to open and close the damper blade even while the fan is running. The spring return actuator is fitted with limit switches that can
be used for capturing the position.
Construction with Siemens spring return actuator Size 1
Size 2 and 3

① Casing
② Damper blade
③ Inspection access
④ Spring return actuator
⑤ Thermoelectric release mechanism with temperature sensor
The spring return actuator enables the motorised opening and closing of the damper blade; it can be activated by the central BMS. In the event of a fire, the
damper is triggered thermoelectrically at 72°C or 95°C (use in warm air ventilation systems). As long as power is supplied to the actuator, the damper
blade remains open. If the supply voltage fails, the damper closes (power off to close). Motorised fire dampers can be used to shut off ducts. The torque of
each actuator is sufficient to open and close the damper blade even while the fan is running. The spring return actuator is fitted with limit switches that can
be used for capturing the damper blade position.
Construction with spring return actuator, explosion-proof Size 1
Size 2 and 3

① Casing
② Damper blade
③ Inspection access
④ ExMax or RedMax spring return actuator with ExBox terminal box
⑤ ExPro TT thermoelectric release mechanism with temperature sensor
The fire damper is used as a shut-off device to prevent fire and smoke from spreading through ducting in areas with potentially explosive atmospheres. The
fire damper is suitable for supply air and extract air systems in potentially explosive atmospheres. For operation of the fire damper, the installation
instructions in the installation and operating instructions and the technical data in the supplementary operating instructions "Explosion-protected fire
dampers type FK2-EU" must be observed.
Use in areas with potentially explosive atmospheres (ATEX)
According to declaration of conformity EPS 20 ATEX 2 058 X, the fire damper may be used in the following areas with potentially explosive atmospheres.
The ambient temperatures and types of release and actuation specified in the technical data are binding.
ExMax:
Zones 1, 2: Gases, mists and vapours
Zones 21, 22: Dusts
RedMax:
Zone 2: Gases, mists and vapours
Zone 22: Dusts
Construction with spring return actuator and duct smoke detector Size 1

Size 2 and 3
① Casing
② Damper blade
③ Inspection access
④ Spring return actuator
⑤ Thermoelectric release mechanism with temperature sensor
⑥ Duct smoke detector RM-O-3-D
The spring return actuator enables the motorised closing of the fire damper. In the event of a fire, the damper is triggered thermoelectrically at 72 °C.
In combination with a suitable duct smoke detector RM-O-3-D, smoke is prevented from being transferred via ductwork into adjacent fire compartments
even before it reaches a temperature that would trigger the thermoelectric release mechanism.
As long as power is supplied to the actuator and smoke is not detected, the fire damper remains open. If the supply voltage fails, the detection of smoke and
exceeding of the release temperature leads to a closing of the fire damper (power off to close).
Motorised fire dampers can be used to shut off ducts. The torque of each actuator is sufficient to open and close the damper blade even while the fan is
running. The spring return actuator is fitted with limit switches that can be used for capturing the damper blade position.
A control input signal from the central BMS is possible.
Construction with fusible link and cover grille on both sides as an air transfer damper Size 1

Size 2 and 3
① Casing
② Damper blade
③ Inspection access
④ Handle
⑤ Interlock
⑥ Thermal release mechanism with fusible link
⑦ Cover grille
Upstream shutters of air transfer units prevent fire and smoke from spreading in buildings. The thermal release mechanism closes the upstream shutter of
the air transfer unit when the release temperature (72°C) is reached. Smoke can, however, spread below this temperature.
The upstream shutter of the air transfer unit consists of the FK2-EU fire damper with a thermal release mechanism for 72 °C and with cover grilles on both
sides, but without a duct smoke detector.
The following applies to Germany:
If fire dampers with a purely mechanical shut-off element are to be used as an upstream shutter of an air transfer unit, the local building regulations must be
observed. Usually the use of such upstream shutters of air transfer units is restricted to pressure differential systems.
Construction as air transfer damper, with spring return actuator and duct smoke detector Size 1

① Casing
② Damper blade
③ Inspection access
④ Spring return actuator
⑤ Thermoelectric release mechanism with temperature sensor
⑥ Duct smoke detector RM-O-3-D (fixed with adapter metal sheet)
⑦ Duct smoke detector RM-O-3-D (fixed with bracket)
⑧ Cover grille
Air transfer dampers are designed to shut off openings for air transfer in fire-resistant internal walls and ceiling slabs. To prevent smoke from spreading in
buildings, it is extremely important that the smoke is detected at an early stage. Duct smoke detector Type RM-O-3-D is required to control and trigger the
air transfer damper. The smoke detector operates on the principle of light scattering and detects the smoke regardless of its temperature so that the fire
dampers can be closed before the release temperature is reached. The thermoelectric release mechanism of the spring return actuator also triggers the
closure of the damper blade. When the release temperature (72 °C) is reached, the temperature sensor in the airflow interrupts the supply voltage to the
spring return actuator.
For installation directly below the ceiling, the variant with bracket is provided. Here, the duct smoke detector is optionally located at the top right, left or
centrally in front of the cover grille. Mounting can be on the actuator or non-actuator side.
The spring return in the actuator causes the fire damper to close (power off to close). A second temperature sensor monitors the ambient temperature. If the
supply voltage fails, the damper closes. Air transfer dampers consist of an FK2-EU fire damper, an RM-O-3-D duct smoke detector with general building
inspectorate licence Z-78.6-125, a spring return actuator (24 V AC/DC or 230 V AC) with two integral limit switches, and cover grilles on both ends.
Construction as air transfer damper, with spring return actuator and duct smoke detector Size 2 and 3

① Casing
② Damper blade
③ Inspection access
④ Spring return actuator
⑤ Thermoelectric release mechanism with temperature sensor
⑥ Duct smoke detector RM-O-3-D (fixed with adapter metal sheet)
⑦ Duct smoke detector RM-O-3-D (fixed with bracket)
⑧ Cover grille
For installation directly below the ceiling, the variant with bracket is provided. Here, the duct smoke detector is optionally located at the top right, left or
centrally in front of the cover grille. Mounting can be on the actuator or non-actuator side.
Nominal sizes 200 × 100 – 1500 × 800 mm ⁴
Casing lengths 305 and 500 mm
Volume flow rate range Up to 14400 l/s or 51840 m³/h
Differential pressure range Up to 2000 Pa
Temperature range -20 to 50 °C
Release temperature 72 °C or 95 °C (for warm air ventilation systems)
Upstream velocity ²
Standard construction ≤ 8 m/s,
Construction with spring return actuator ≤ 12 m/s,
Construction with explosion-proof actuator ExMax/RedMax-15-BF TR ≤ 10 m/s
¹ Temperatures may differ for units with attachments. Details for other applications are available on request.
² Data applies to uniform upstream and downstream conditions for the fire dampers.
³ Condensation and the intake of humid fresh air have to be avoided as otherwise operation will be impaired or not be possible.
⁴ Damper blade with lip seal for sizes 1 and 2, damper blade with travel stop seal for size 3.
Sizes see functional description
Free area and resistance coefficient, width 200 – 800 mm
1, 3

H (1)
B
200 250 300 350 400 450 500 550 600 650 700 750 800
100 A [m²] 0.013 0.016 0.02 0.023 0.027 0.03 0.034 0.037 0.041 0.044 0.048 0.051 0.055
100 ζ1.05 0.96 0.88 0.83 0.78 0.75 0.71 0.69 0.66 0.64 0.62 0.61 0.59
125 A [m²] 0.0175 0.0222 0.027 0.0317 0.0365 0.0412 0.046 0.0507 0.0555 0.0602 0.065 0.0697 0.0745
125 ζ0.93 0.85 0.78 0.73 0.69 0.66 0.63 0.61 0.59 0.57 0.55 0.54 0.52
150 A [m²] 0.0221 0.0281 0.0341 0.0401 0.0461 0.0521 0.0581 0.0641 0.0701 0.0761 0.0821 0.0881 0.0941
150 ζ0.85 0.77 0.71 0.67 0.63 0.6 0.58 0.55 0.54 0.52 0.5 0.49 0.48
160 A [m²] 0.024 0.03 0.037 0.043 0.05 0.056 0.063 0.069 0.076 0.082 0.089 0.095 0.102
160 ζ0.66 0.6 0.55 0.52 0.49 0.47 0.45 0.43 0.41 0.4 0.39 0.38 0.37
200 A [m²] 0.031 0.04 0.048 0.057 0.065 0.074 0.082 0.091 0.099 0.108 0.116 0.125 0.133
200 ζ0.74 0.67 0.62 0.58 0.55 0.52 0.5 0.48 0.47 0.45 0.44 0.43 0.41
250 A [m²] 0.0397 0.0507 0.0617 0.0727 0.0837 0.0947 0.1057 0.1167 0.1277 0.1387 0.1497 0.1607 0.1717
250 ζ0.67 0.61 0.56 0.53 0.5 0.47 0.45 0.44 0.42 0.41 0.4 0.38 0.37
300 A [m²] 0.0489 0.0624 0.0759 0.0894 0.1029 0.1164 0.1299 0.1434 0.1569 0.1704 0.1839 0.1974 0.2109
300 ζ0.62 0.56 0.52 0.49 0.46 0.44 0.42 0.4 0.39 0.38 0.36 0.35 0.34
350 A [m²] 0.0581 0.0741 0.0901 0.1061 0.1221 0.1381 0.1541 0.1701 0.1861 0.2021 0.2181 0.2341 0.2501
350 ζ0.58 0.52 0.48 0.45 0.43 0.41 0.39 0.38 0.36 0.35 0.34 0.33 0.32
400 A [m²] 0.0673 0.0858 0.1043 0.1228 0.1413 0.1598 0.1783 0.1968 0.2153 0.2338 0.2523 0.2708 0.2893
400 ζ0.54 0.49 0.46 0.43 0.4 0.39 0.37 0.35 0.34 0.33 0.32 0.31 0.3
450 A [m²] 0.0765 0.0975 0.1185 0.1395 0.1605 0.1815 0.2025 0.2235 0.2445 0.2355 0.2548 0.2741 0.2934
450 ζ0.57 0.51 0.47 0.43 0.41 0.39 0.37 0.35 0.34 0.33 0.32 0.31 0.3
500 A [m²] 0.0857 0.1092 0.1327 0.1562 0.1797 0.2032 0.2267 0.2502 0.2737 0.266 0.2878 0.3096 0.3314
500 ζ0.54 0.48 0.44 0.41 0.39 0.37 0.35 0.34 0.33 0.31 0.3 0.3 0.29
550 A [m²] 0.1264 0.1507 0.175 0.1993 0.2236 0.2479 0.2722 0.2965 0.3208 0.3451 0.3694
550 ζ0.42 0.4 0.37 0.35 0.34 0.32 0.31 0.3 0.29 0.28 0.28
600 A [m²] 0.1394 0.1662 0.193 0.2198 0.2466 0.2734 0.3002 0.327 0.3538 0.3806 0.4074
600 ζ0.41 0.38 0.36 0.34 0.32 0.31 0.3 0.29 0.28 0.27 0.27
650 A [m²] 0.1524 0.1817 0.211 0.2403 0.2696 0.2989 0.3282 0.3575 0.3868 0.4161 0.4454
650 ζ0.39 0.37 0.35 0.33 0.31 0.3 0.29 0.28 0.27 0.26 0.26
700 A [m²] 0.1654 0.1972 0.229 0.2608 0.2926 0.3244 0.3562 0.388 0.4198 0.4516 0.4834
700 ζ0.38 0.35 0.33 0.32 0.3 0.29 0.28 0.27 0.26 0.25 0.25
750 A [m²] 0.1784 0.2127 0.247 0.2813 0.3156 0.3499 0.3842 0.4185 0.4528 0.4871 0.5214
750 ζ0.37 0.34 0.32 0.31 0.29 0.28 0.27 0.26 0.25 0.25 0.24
800 A [m²] 0.1914 0.2282 0.265 0.3018 0.3386 0.3754 0.4122 0.449 0.4858 0.5226 0.5594
800 ζ0.36 0.33 0.32 0.3 0.29 0.27 0.26 0.26 0.25 0.24 0.23
H (1)
B
200 250 300 350 400 450 500 550 600 650 700 750 800
(1) Parameter

Free area and resistance coefficient, width 850 – 1500 mm
H Parameter
B
900 1000 1100 1200 1300 1400 1500
200 A [m²] 0.117 0.1665 0.1442 0.1578 0.1714 0.185 0.1986
200 ζ0.44 0.42 0.40 0.39 0.38 0.36 0.35
250 A [m²] 0.16 0.2157 0.1972 0.2158 0.2344 0.253 0.2716
250 ζ0.39 0.37 0.35 0.34 0.33 0.32 0.31
300 A [m²] 0.203 0.2649 0.2502 0.2738 0.2974 0.321 0.3446
300 ζ0.35 0.34 0.32 0.31 0.30 0.29 0.28
350 A [m²] 0.246 0.2746 0.3032 0.3318 0.3604 0.389 0.4176
350 ζ0.32 0.31 0.30 0.29 0.28 0.27 0.26
400 A [m²] 0.289 0.3226 0.3562 0.3898 0.4234 0.457 0.4906
400 ζ0.30 0.29 0.28 0.27 0.26 0.25 0.25
450 A [m²] 0.332 0.3706 0.4092 0.4478 0.4864 0.525 0.5636
450 ζ0.29 0.28 0.26 0.26 0.25 0.24 0.23
500 A [m²] 0.375 0.4186 0.4622 0.5058 0.5494 0.593 0.6366
500 ζ0.27 0.26 0.25 0.24 0.24 0.23 0.22
550 A [m²] 0.418 0.4666 0.5152 0.5638 0.6124 0.661 0.7096
550 ζ0.26 0.25 0.24 0.23 0.23 0.22 0.21
600 A [m²] 0.461 0.5146 0.5682 0.6218 0.6754 0.729 0.7826
600 ζ0.25 0.24 0.23 0.22 0.22 0.21 0.20
650 A [m²] 0.504 0.5626 0.6212 0.6798 0.7384 0.797 0.8556
650 ζ0.24 0.23 0.22 0.22 0.21 0.20 0.20
700 A [m²] 0.547 0.6106 0.6742 0.7378 0.8014 0.865 0.9286
700 ζ0.24 0.23 0.22 0.21 0.20 0.20 0.19
750 A [m²] 0.59 0.6586 0.7272 0.7958 0.8644 0.933 1.0016
750 ζ0.23 0.22 0.21 0.20 0.20 0.19 0.19
800 A [m²] 0.633 0.7066 0.7802 0.8538 0.9274 1.01 1.0746
800 ζ0.22 0.21 0.20 0.20 0.19 0.19 0.18
① Parameter

Quick sizing tables provide a good overview of the volume flow rates with different sound power levels as well as of differential pressures of up to 35 Pa.
Approximate intermediate values can be interpolated. Precise intermediate values can be calculated with our Easy Product Finder design program. You can find
this on our website at:
www.trox.de/mytrox/auslegungsprogramm-easy-poduct-finder-182e16348fac3d33
Volume flow rate q in [m³/h] for differential pressure Δp 35 Pa
200 – 650 mm
H L [dB(A)]
B
200 250 300 350 400 450 500 550 600 650
100 35 390 484 577 668 759 849 938 1027 1116 1205
125 35 507 627 745 862 978 1093 1208 1322 1435 1548
150 35 619 764 907 1048 1188 1326 1464 1601 1737 1873
160 35 728 897 1063 1227 1390 1550 1710 1869 2027 2185
200 35 835 1028 1216 1402 1586 1769 1950 2130 2309 2487
250 35 1026 1264 1496 1725 1951 2174 2396 2616 2835 3053
300 35 1232 1512 1786 2056 2321 2584 2844 3103 3360 3615
350 35 1434 1757 2071 2379 2683 2984 3281 3577 3870 4161
400 35 1634 1997 2351 2698 3039 3377 3710 4041 4369 4696
450 35 1474 1856 2225 2585 2938 3286 3629 3969 4305 4640
500 35 1647 2071 2480 2878 3269 3652 4031 4406 4778 5146
550 35 2733 3169 3595 4015 4429 4838 5243 5645
600 35 2983 3456 3919 4374 4823 5266 5704 6139
650 35 3232 3742 4241 4730 5213 5689 6160 6627
700 35 3479 4026 4560 5084 5600 6109 6613 7112
750 35 3725 4308 4877 5435 5984 6526 7062 7592
800 35 3970 4589 5193 5784 6367 6941 7508 8070
Volume flow rate q in [m³/h] for differential pressure Δp 35 Pa
700 – 1500 mm
H L [dB(A)]
B
700 750 800 900 1000 1100 1200 1300 1400 1500
100 35 1293 1380 1468
125 35 1660 1772 1883
150 35 2008 2142 2276
160 35 2341 2497 2653
200 35 2664 2841 3017 2633 2915 3196 3476 3754 4031 4308
250 35 3270 3486 3701 3422 3785 4147 4506 4864 5221 5576
300 35 3869 4122 4374 4172 4611 5048 5482 5915 6345 6774
350 35 4451 4739 5027 4895 5406 5914 6419 6922 7423 7922
400 35 5020 5343 5664 5597 6177 6753 7327 7897 8465 9031
450 35 4972 5302 5630 6282 6929 7572 8211 8847 9480 10110
500 35 5512 5875 6237 6955 7667 8374 9077 9776 10471 11164
550 35 6044 6440 6834 7616 8392 9162 9926 10687 11444 12198
600 35 6570 6998 7424 8269 9107 9938 10763 11584 12401 13214
650 35 7091 7551 8008 8914 9813 10704 11589 12469 13344 14216
700 35 7606 8098 8585 9553 10511 11461 12405 13343 14276 15204
750 35 8118 8640 9158 10186 11203 12211 13213 14208 15197 16181
800 35 8626 9178 9727 10813 11889 12955 14013 15064 16109 17149
Volume flow rate q in [m³/h] for differential pressure Δp 35 Pa
200 – 650 mm
v st
WA
v st
WA
v st

H L [dB(A)]
B
200 250 300 350 400 450 500 550 600 650
100 45 525 690 841 975 1107 1239 1369 1499 1629 1758
125 45 710 870 1088 1258 1427 1595 1762 1928 2094 2258
150 45 880 1115 1323 1529 1733 1935 2136 2336 2534 2732
160 45 1063 1309 1552 1791 2028 2262 2496 2727 2958 3188
200 45 1219 1499 1775 2046 2314 2580 2845 3107 3368 3628
250 45 1498 1844 2183 2517 2846 3173 3496 3818 4137 4455
300 45 1797 2207 2607 2999 3387 3770 4150 4527 4902 5274
350 45 2092 2563 3022 3472 3915 4354 4788 5218 5646 6071
400 45 2384 2915 3431 3937 4435 4927 5413 5896 6375 6851
450 45 2151 2709 3247 3772 4287 4794 5295 5790 6282 6769
500 45 2404 3022 3619 4200 4769 5329 5882 6429 6971 7508
550 45 3987 4623 5246 5858 6462 7059 7650 8237
600 45 4353 5043 5718 6382 7036 7683 8322 8957
650 45 4715 5460 6187 6902 7605 8300 8988 9669
700 45 5076 5874 6653 7418 8170 8913 9648 10376
750 45 5435 6286 7116 7930 8731 9522 10303 11077
800 45 5792 6695 7576 8440 9289 10127 10954 11774
H L [dB(A)]
B
200 250 300 350 400 450 500 550 600 650
Volume flow rate q in [m³/h] for differential pressure Δp 35 Pa
700 – 1500 mm
H L [dB(A)]
B
700 750 800 900 1000 1100 1200 1300 1400 1500
100 45 1886 2014 2142
125 45 2422 2585 2748
150 45 2929 3126 3322
160 45 3416 3644 3871
200 45 3887 4145 4402 3842 4254 4663 5071 5477 5882 6285
250 45 4771 5086 5400 4993 5523 6050 6575 7097 7617 8136
300 45 5645 6014 6382 6088 6728 7365 7999 8630 9258 9884
350 45 6494 6915 7334 7142 7888 8629 9366 10100 10830 11558
400 45 7324 7795 8264 8166 9012 9853 10690 11522 12351 13177
450 45 7254 7735 8214 9166 10110 11048 11980 12908 13831 14751
500 45 8042 8572 9100 10147 11186 12217 13243 14263 15278 16289
550 45 8818 9397 9971 11113 12244 13367 14483 15593 16697 17797
600 45 9586 10211 10832 12065 13287 14499 15704 16902 18093 19280
650 45 10345 11016 11683 13006 14317 15617 16908 18192 19470 20741
700 45 11098 11814 12526 13938 15336 16722 18099 19467 20828 22183
750 45 11844 12606 13362 14861 16345 17816 19277 20729 22172 23609
800 45 12586 13391 14191 15777 17346 18901 20444 21978 23503 25020
The Easy Product Finder allows you to size products using your project-specific data. You will find the Easy Product Finder on our website.
Sizing example
Given data Quick sizing
Volume flow rate: 3350 m³/h FK2-EU/400×300×500
Maximum width: 300 mm
Sound power level: 45 dB(A)
WA
v st
WA
Specification text
Fire damper in line with the European product standard DIN EN 15650 in square or rectangle construction style with two large inspection accesses that can be
operated without tools. Tested for fire resistance properties according to DIN EN 1366-2 (300 Pa and 500 Pa negative pressure), with CE label.
The fire damper manufacturer's declaration of performance (DoP) provides proof that a product is suitable for the respective installation

conditions, e.g. in, on the face of and remote from walls or ceilings, with the stated essential characteristics such as size, supporting
construction, construction and installation type, and that it has the corresponding class of performance to EN 13501-3.
The ready-for-operation unit includes a release mechanism and a replaceable, fire-resistant damper blade, which, depending on the application, can be either
horizontal or vertical. Depending on application, classified from:
EI 30 (v , h i ↔ o) S to EI 240 (v , h i ↔ o) S
Suitable for:
Mortar-based installation
In solid walls, walls made from gypsum wall boards, lightweight partition walls, compartment walls, safety partition walls and walls to provide radiation
protection
In solid walls with partial mortaring
With installation kit for flexible ceiling joints in solid walls
In shaft walls with metal support structures or steel support structures
In timber stud walls and timber frame walls, as well as solid wood and cross laminated timber walls
In and on solid walls and in combination with timber beam, solid wood and modular ceilings (System Cadolto)
In solid wood ceilings, wooden beam ceilings and historical wooden beam ceilings
Multiple occupancy up to 4.8 m² total fire damper surface area in solid walls and ceiling slabs, lightweight partition walls as well as timber stud walls and half-
timbered constructions
Combined installation with FKRS-EU and FKR-EU in solid walls and ceiling slabs, lightweight partition walls, shaft walls as well as timber stud walls and half-
timbered constructions up to 1.2 m² total fire damper surface area
In lightweight partition walls, compartment walls, safety partition walls and radiation protection walls with metal support structures or steel support structures
4-fold arrangement up to 4.8 m² total fire damper surface area with common duct in solid walls, lightweight partition walls as well as timber stud walls and half-
timbered constructions
Mortar-based installation in concrete base on solid ceiling slabs, also combined with FKRS-EU and FKR-EU as well as multiple occupancy up to 4.8 m² total
fire damper surface area
In hollow-stone, hollow-section, ribbed and composite ceiling slabs
Dry mortarless installation
In lightweight partition walls, compartment walls, safety partition walls and radiation protection walls with metal support structures or steel support structures
In lightweight partition walls with metal support structure and cladding on both sides, and with flexible ceiling joint
In timber stud walls and timber frame walls, as well as solid wood and cross laminated timber walls
In solid walls with installation kit E3 in an existing installation subframe E1/E2 of the FK-K90 or FK-EU
In solid walls with installation kit EW and installation subframe
With gypsum board/gypsum plaster fire protection panels in lightweight partition walls with metal support
With mineral wool in lightweight partition wall with metal support, timber stud walls and half-timbered constructions as well as solid wood walls
In shaft walls with metal support structure or steel support structure, and in shaft walls without metal support structure
In solid wood and wooden beam ceilings
With an installation kit on the face of and remote from solid walls and ceiling slabs
Remote from lightweight partition walls (wall penetration)
Fire batt installation
In solid walls and ceiling slabs
In lightweight partition walls, compartment walls, safety partition walls and walls to provide radiation protection, with metal support structure or steel support
structure
In timber stud walls, half-timbered constructions, solid wood walls and CLT walls
Multiple occupancy up to 2.4 m² total fire damper surface area in solid walls and ceiling slabs, lightweight partition walls as well as timber stud walls and half-
timbered constructions
Size dimensions from (B × H) 200 mm × 100 mm – 1500 mm × 800 mm, intermediate sizes can be ordered in 1 mm increments. Optimised low-leakage casing,
up to leakage class C to EN 1751 with low differential pressure and low sound power level. Fire damper casing made of galvanised sheet
steel, optionally galvanised sheet steel with powder coating RAL 7001 or stainless steel 1.4301. Damper blade made of special insulation
material; coating as an option.
Corrosion protection according to EN 15650 in connection with EN 60068-2-52. Hygienic requirements are fulfilled in accordance with VDI 6022-1, VDI 3803-1,
DIN 1946-4, DIN EN 13779 as well as the Önorm H 6020 and H 6021 and the SWKI. Casing length 305 mm or 500 mm with a 30 mm (L = 500 mm) flange for the
connection to ducts made of non-combustible or combustible materials. Thermal release at 72 °C or 95 °C (warm air ventilation systems) with a fusible link or
thermoelectrically with a spring return actuator, push button and indicator light (LED). Constructions with a brushless actuator for opening and closing the fire
damper, also when the ventilation system is running and independent of the nominal size, are particularly suitable for functional checks and for shutting off sections
of the duct system. Retrofit of spring return actuators without modification of the rod is possible from the outside. Explosion-proof constructions for zones 1,
2, 21 and 22 available with limit switch or spring return actuator.
In the version with thermal insulation made of 32 mm synthetic cellular rubber, fire rating class: B-s2-d0, spring return actuator and perimeter mortar infill, suitable
e o e o

for reducing condensation in the case of outdoor air intake (ODA Outdoor air)
Special features
Declaration of performance in accordance with European Construction Products Regulation
Classification to EN 13501-3, to EI 240 (ve, ho, i ↔ o) S
Complies with the requirements of EN 15650
Tested for fire resistance properties in accordance with EN 1366-2 (300 Pa and 500 Pa negative pressure)
Certified mortar-based installation with reduced distances of 40 mm to supporting components or 60 mm between two fire dampers (flange to flange)
Perimeter gap may be up to 225 mm for mortar-based installation
2 inspection accesses with bayonet fixing for single-handed operation
Meets the hygiene requirements of VDI 6022-1, VDI 3803-1, DIN 1946-4, EN 13779, of Ö-Norm H 6020 and H 6021, and of SWKI
Corrosion protection according to EN 15650 in connection with EN 60068-2-52
Closed blade air leakage to EN 1751, class 2
Casing air leakage to EN 1751, class C (B + H ≤700, class B)
Low differential pressure and sound power level
Any airflow direction
Integration into the central building management system with the international standard fire damper system in accordance with IEC 62026-2 with AS interface
is possible
Technical data
Nominal sizes: 200 × 100 to 1500 × 800 mm
Casing lengths: 305 and 500 mm
Volume flow rate range: up to 14400 l/s / up to 51840 m³/h
Differential pressure: up to 2000 Pa
Temperature range: -20 – 50 °C
Upstream velocity*: Standard construction ≤ 8 m/s, construction with spring return actuator ≤ 12 m/s, construction with explosion-proof actuator
ExMax/RedMax-15-BF TR ≤ 10 m/s
* Data applies to uniform upstream and downstream conditions for the fire damper
Materials and surfaces
TROX casing:
Galvanised sheet steel
Galvanised sheet steel, powder-coated RAL 7001
Stainless steel 1.4301
Damper blade:
Special insulation material
Special insulation material with impregnation
ODA construction:
Damper casing made of galvanised sheet steel with powder coating and thermal insulation, damper blade made of special insulating material with
impregnation (only in conjunction with spring return actuator)
Other components:
Damper blade shafts and drive linkage made of galvanised steel, in constructions -1 and -2 made of stainless steel
Plastic bearings
EPDM and TPE seals
The construction variants with stainless steel or powder-coated casing meet even more critical requirements for corrosion protection. Detailed listing on request.
Equivalence criteria
The declaration of performance according to the Construction Products Regulation describes all CE-certified installation types including the performance
class up to EI 240 S according to EN 13501-3 as well as the essential characteristics of at least the
Hygienic requirements are fulfilled in accordance with VDI 6022-1, VDI 3803-1, DIN 1946-4, DIN EN 13779 as well as the Önorm H 6020 and H 6021 and the
SWKI.
CE-marked and thus tested for fire protection according to EU regulation 305/2011 and evaluated according to machinery directive 2006/42/EC
CE-certified mortar-based installation at a distance ≥ 60mm between 2 fire dampers (flange to flange)
Combined installation with FKRS-EU and FKR-EU in solid walls and ceiling slabs, lightweight partition walls, shaft walls as well as timber stud walls and half-
timbered constructions up to 1.2 m² total fire damper surface area
2 inspection access panels Ø110 mm, with bayonet fixing (can be opened without tools)
Pressure loss < 15 Pa at reference size 400 × 200 mm and 6 m/s face velocity

Sound power < 38 dB (A) at reference size 400 × 200 mm and 6 m/s face velocity
Multiple occupancy up to 4.8 m² total fire damper surface area in solid walls and ceiling slabs, lightweight partition walls as well as timber stud walls and half-
timbered constructions
4-fold arrangement up to 4.8 m² with common duct in solid walls, lightweight partition walls as well as timber stud walls and half-timbered constructions
Multiple occupancy up to 2.4 m² total fire damper surface area in solid walls and ceiling slabs, lightweight partition walls as well as timber stud walls and half-
timbered constructions
ORDER CODE FK2-EU
FK2-EU – 1 – 7 / DE / 600 × 400 × 500 / ES / A0 / Z43
| | | | | | |
1 2 3 4 5 6 7
1 Type
FK2-EU Fire damper
2 Construction
No entry required: standard construction
1 powder-coated casing RAL 7001
2 stainless steel casing
7 impregnated damper blade
1 – 7 powder-coated casing RAL 7001 and impregnated damper blade
2 – 7 stainless steel casing and impregnated damper blade
W with fusible link 95 °C
(only for use in warm air ventilation systems)
B with coated fusible link 72 °C
WB with coated fusible link 95 °C
(only for use in warm air ventilation systems)
3 Country of destination
DE Germany
CH Switzerland
AT Austria
NL Netherlands
GB Great Britain
ES Spain
Other countries of destination upon request
4 Nominal size [mm]
B × H × L
5 Accessories 1
No entry required: none
ES
E3
EW
GM
WA
WE
GL100
GL125
GL150
GL175
6 Accessories 2
No entry required: none
0A – FR
7 Attachments
Z00 – ZA14
Only for FK2-EU with L = 305 mm
3
4
4
2
1
2
2, 3
2
2
2, 3
2, 3
2, 3
2, 3
1
2