Trox Technik FKR-EU User manual

Explosion-proof fire
damper
Type FKR-EU
Supplementary Operating Manual
Read the instructions prior to performing any task!
according to Declaration of Performance
DoP / FKR-EU / DE / 004
GB/en

A00000038482, 3, GB/en
Translation of the original
© 2021
TROX GmbH
Heinrich-Trox-Platz
47504 Neukirchen-Vluyn, Germany
Germany
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: http://www.troxtechnik.com
12/2021
Explosion-proof fire damper Type FKR-EU
2

1 General information ........................................ 4
2Safety and correct use .................................... 5
3 Technical data .................................................. 6
3.1 FKR-EU with explosion-proof fusible link
.................................................................... 6
3.2 FKR-EU with explosion-proof spring return
actuator ..................................................... 8
3.3 ATEX areas of application ......................... 9
4 Electrical connection .................................... 10
5 Functional test ............................................... 12
5.1 FKR-EU with fusible link .......................... 12
5.2 FKR-EU with ExMax or RedMax spring
return actuator ......................................... 15
Table of contents
Explosion-proof fire damper Type FKR-EU 3

1 General information
About this supplementary operating manual
This supplementary operating manual describes the fol-
lowing explosion-proof variants of the fire damper:
FKR-EU with fusible link
FKR-EU with spring return actuator
ExMax-15-BF-TR
FKR-EU spring return actuator RedMax-15-BF-TR
To ensure correct functioning of the fire damper, it is
essential to read the provided supplementary operating
manual before starting any work, and to comply with it.
This supplementary operating manual must be given to
the system owner when handing over the system. The
system owner must include the supplementary oper-
ating manual with the system documentation.
The manufacturer does not accept any liability for any
malfunction or damage resulting from non-compliance
with this supplementary operating manual or non-com-
pliance with relevant statutory regulations.
This supplementary operating manual is intended for
specialist consultants, developers, and owners of the
ventilation systems in which the fire dampers are to be
installed. This operating manual is also intended for
people conducting the following work:
Electrical connection
Commissioning
Functional test
Other applicable documentation
In addition to this supplementary operating manual, the
following documents apply:
Operating and installation manual FKR-EU
ATEX declaration of conformity
EPS 21 ATEX 2 141 X
Symbols used in this manual
DANGER!
Imminently hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING!
Potentially hazardous situation which, if not avoided,
may result in death or serious injury.
CAUTION!
Potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
NOTICE!
Potentially hazardous situation which, if not avoided,
may result in property damage.
General information
Explosion-proof fire damper Type FKR-EU4

2 Safety and correct use
General information regarding safety
Only specialist personnel are allowed to perform the
described work on the fire damper. Only skilled qualified
electricians are allowed to work on the electrical system.
The installation location must be easily accessible and
have sufficient clearance for electrical connection and
maintenance of the fire damper.
Standards and guidelines
Construction Products Regulation (EU) No.
305/2011
EN 15650 – Ventilation for buildings – Fire dampers
EN 13501-3 – Classification: Fire resistant ducts
and fire dampers
EN 1366-2 – Fire resistance tests for installations:
Fire dampers
EN 1751 Ventilation for buildings – Air terminal
devices
The basic safety and health requirements stipulated in
Directive 2014/34/EC are fulfilled through conformity
with the following standards:
EN 1127-1 – Explosive atmospheres – Explosion
protection: Basic concepts and methodology
DIN EN ISO 80079-36 – Explosive atmospheres:
Non-electrical equipment for explosive atmospheres
– Basic method and requirements
DIN EN ISO 80079-37 – Explosive atmospheres:
Non-electrical equipment for explosive atmospheres
- Non-electrical type of protection constructional
safety "c"
Maintenance and replacement parts
The FKR-EU fire damper is a safety related product that
has been specially developed for fire protection. To
maintain the function, use only original TROX replace-
ment parts.
Environmental protection
To protect the environment keep the following in mind:
Dispose of packaging in an environmentally sound
manner.
Have used fire damper components or the used fire
damper only disposed of by an authorised company.
Dispose of electronic components according to the
local electronic waste regulations.
Correct use
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 may be used in supply air or extract air
systems in areas with potentially explosive atmos-
pheres.
For details on the operation of the fire dampers, refer to
the operating and installation manual FKR-EU and the
technical data in this supplementary operating manual.
Use in areas with potentially explosive atmospheres
(ATEX)
In accordance with the certificate of conformity
EPS 21 ATEX 2 141 X, the fire damper can be used in
certain Ex zones. The ambient temperatures and types
of release and actuation specified in the technical data
are binding, .
Incorrect use
The following applications are not allowed:
For use
as a smoke control damper,
as an air transfer damper,
outdoors without sufficient protection against the
effects of weather,
in extract air systems in commercial kitchens,
in ventilation systems in which high levels of dust
and pollution, extreme humidity, or chemical con-
tamination may impair the function of the unit and
in installation situations that prevent an inspection of
the internal components of the fire damper.
Modifying the fire damper or using replacement parts
that have not been approved by TROX is not permitted.
Residual risks
TROX fire dampers are subject to strict quality controls
during manufacturing. In addition, a functional test is
performed before shipping.
Damage can, however, occur during transport or instal-
lation and impair the function of the fire damper.
In any case, the proper function of the fire damper must
be checked during commissioning, and ensured through
regular maintenance while in use.
Safety and correct use
Explosion-proof fire damper Type FKR-EU 5

3 Technical data
3.1 FKR-EU with explosion-proof fusible link
Dimensions and weight
Fig. 1: FKR-EU with explosion-proof fusible link
1.1 Enclosure
1.2 Damper blade with seal
1.4 Travel stop for CLOSED position
1.6 Handle
1.7 Interlock
1.8 Lip seal
1.9 Limit switch cover (only in case of limit switch)
10.14 Thermal release mechanism with fusible link
10.21 Z-sheet
1 Spigot construction
2 Flange construction
3 Keep clear to provide access for operation
A Installation side
B Operating side
Technical data
FKR-EU with explosion-proof fusible link
Explosion-proof fire damper Type FKR-EU6

Limit switch for fire damper with fusible link type 07-2511
Connecting cable length / cross section 1 m / 3 × 0.75 mm2
Protection level IP 66
Type of contact 1 changeover contacts
Switch rating Resistive load 250 V AC / 5 A 250 V DC / 0.4 A 30 V AC/DC / 7 A
Inductive load
cos φ = 0.6
250 V AC / 3 A 250 V DC / 0.03 A 30 V AC/DC / 5 A
Ambient temperature -20 ... +40 °C
The limit switches must be connected in a separately approved casing with a type of protection according to EN 60079-0.
Dimensions [mm] / Weight [kg]
Nominal size DN 315 355 400 450 500 560 630 710 800
ÆD314 354 399 449 499 559 629 709 799
A31 36
ÆD1352 392 438 488 538 600 670 750 840
α45 ° 30 ° 22.5 °
No. of holes 8 12 16
Weight with fusible link 6.8 7.3 8.5 14.1 16.4 18 21.3 25.7 28.6
Technical data
FKR-EU with explosion-proof fusible link
Explosion-proof fire damper Type FKR-EU 7

3.2 FKR-EU with explosion-proof spring return actuator
Dimensions and weight
Fig. 2: FKR-EU with explosion-proof spring return actuator
1.1 Enclosure
1.2 Damper blade with seal
1.4 Travel stop for CLOSED position
1.8 Lip seal
10.6 ExMax spring return actuator, alternative*
10.7* RedMax spring return actuator
10.13 Thermoelectric release mechanism ExPro-TT
with temperature sensor
1 Spigot construction
2 Flange construction
3 Keep clear to provide access for operation
A Installation side
B Operating side
Technical data
FKR-EU with explosion-proof spring return actuat...
Explosion-proof fire damper Type FKR-EU8

Dimensions [mm] / Weight [kg]
Nominal size DN 315 355 400 450 500 560 630 710 800
ÆD314 354 399 449 499 559 629 709 799
A31 36
ÆD1352 392 438 488 538 600 670 750 840
α45 ° 30 ° 22.5 °
No. of holes 8 12 16
Weight with spring return
actuator
10.2 10.7 11.9 17.4 19.7 21.3 24.6 29.0 31.9
Spring return actuator ExMax-15-BF TR/RedMax-15-BF-TR
Supply voltage 24 – 240 V AC/DC, ± 10 %,
self-adjusting 50 – 60 Hz ± 20 %
Power rating 16 W / 15 VA
Switch-on current (< 1 s) 2 A
Run time Actuator / spring return 30 s / 10 s
Limit switch Type of contact 2 changeover contacts
Switching voltage 230 V AC / 24 V DC
Switching current 0.4 mA – 3 A
IEC protection class / IP protection I (earthed) / IP66
Storage temperature -40 ... +55 °C
Ambient humidity ≤ 90% rh, no condensation
3.3 ATEX areas of application
ATEX areas of use, depending on the type of release mechanism, actuation, ambient temperature and air-
flow velocity
Release
mechanism
Type of actuation Labelling Ambient
temperature
Maximum air
velocity
Fusible link Spring mechanism II 2G Ex h IIC T6 Gb
II 2D Ex h IIIC T80°C Db
-40 °C ≤ Ta ≤ +50 °C 8 m/s
Fusible link
and limit switch
Spring mechanism II 2G Ex h IIC T6 Gb
II 2D Ex h IIIC T80°C Db
-20 °C ≤ Ta ≤ +50 °C 8 m/s
ExPro-TT ExMax-15-BF-TR II 2G Ex h IIC T6 Gb
II 2D Ex h IIIC T80°C Db
-40 °C ≤ Ta ≤ +40 °C 10 m/s
ExPro-TT ExMax-15-BF-TR II 2G Ex h IIC T5 Gb
II 2D Ex h IIIC T95°C Db
-40 °C ≤ Ta ≤ +50 °C 10 m/s
ExPro-TT RedMax-15-BF-TR II 3G Ex h IIC T6 Gc
II 3D Ex h IIIC T80°C Dc
-40 °C ≤ Ta ≤ +40 °C 10 m/s
ExPro-TT RedMax-15-BF-TR II 3G Ex h IIC T5 Gc
II 3D Ex h IIIC T95°C Dc
-40 °C ≤ Ta ≤ +50 °C 10 m/s
Technical data
ATEX areas of application
Explosion-proof fire damper Type FKR-EU 9

4 Electrical connection
General safety notes
DANGER!
Danger of electric shock! Do not touch any live com-
ponents! Electrical equipment carries a dangerous
electrical voltage.
– Only skilled qualified electricians are allowed to
work on the electrical system.
–Switch off the power supply before working on
any electrical equipment.
For any wiring work, follow the national and local regula-
tions and guidelines for electrical installation.
Equipotential bonding
To prevent ignition sources due to static charges, the
fire damper must be integrated into the equipotential
bonding of the ventilation system.
Construction of equipotential bonding (by others):
Single-wire CU-line 4 mm2 with ring cable lug.
Connection options of equipotential bonding:
Fire damper with ExMax/RedMax spring return
actuator
– Terminal box at PA terminal
Fire damper with fusible link construction
– Flange construction: Fixing screws (M8) on the
inside of the flange or drilling screw on the
flange
– Spigot construction: Screw ( Fig. 3 /1) on
release mechanism
Fig. 3: FKR-EU connection for equipotential bonding
Limit switches for FKR-EU with fusible link
The limit switches must be connected according to the
wiring example opposite. The limit switches must be
connected in a separately approved casing with a type
of protection according to EN 60079-0.
Indicator lights or relays may be connected as long as
the performance specifications are taken into considera-
tion.
The limit switches may be used as NO or NC contacts
for signalling purposes.
Wiring of limit switches, example
Fig. 4: Wiring of limit switches, example
1 Indicator light or relay, to be provided by others
A Type of connection normally closed
B Type of connection normally open
Type of
connection
Limit
switch
Damper
blade
Electric cir-
cuit
A Not
actuated
CLOSED or
OPEN position
not reached
Closed
B actuated CLOSED or
OPEN position
reached
Closed
FKR-EU with ExMax or RedMax spring return
actuator
The ExMax or RedMax spring return actuator has auto-
matic voltage detection 24 V – 240 V AC/DC. The
actuator detects the voltage automatically and does not
have to be adjusted.
Connect the spring return actuator according to the
wiring example.
Several actuators can be connected in parallel as long
as the performance specifications are taken into consid-
eration.
Functional testing requires a switch that interrupts the
voltage supply (by others).
Electrical connection
Explosion-proof fire damper Type FKR-EU10

The electrical connection is made in the terminal box.
The factory installed wiring must not be changed.
Attention!
If the voltage has been interrupted with either the switch
(1) or the optional release mechanism (2), the heating
(6) is not active.
Wiring example for ExMax or RedMax spring return
actuator
Fig. 5: Actuator connection, example
1 Switch for opening and closing, to be provided by
others
2 Optional release mechanism, e.g. TROX duct
smoke detector type RM-O-3-D or RM-O-VS-D (out-
side the Ex zone)
3 Indicator light for CLOSED position, to be provided
by others
4 Indicator light for OPEN position, to be provided by
others
5Terminal for equipotential bonding 4 mm2
6 Heating
TROXNETCOM AS-i
The fire dampers with spring return actuator and module
AS-EM/C (accessory) form a functional unit ready for
automatic operation.
The module is to be installed and wired outside of the
potentially explosive atmosphere by others
The module transmits the control signals between
the spring return actuator and the controller and
power unit. This allows for controlling the actuator
and monitoring the actuator run time during func-
tional testing.
The 24 V DC supply voltage for the module and the
actuator is transmitted using the AS-i flat cable.
Status display:
–Operation
– 4 inputs
– 2 outputs
Wiring example for TROXNETCOM
Fig. 6: Wiring example for TROXNETCOM
1 Controller
2 AS-EM/C module
3 FKR-EU
4 Safe area
Electrical connection
Explosion-proof fire damper Type FKR-EU 11

5 Functional test
General
During operation at normal temperatures, the damper
blade is open. A functional test involves closing the
damper blade and opening it again. The exact proce-
dure depends on the type of release mechanism.
WARNING!
Risk of injury from the release mechanism or from a
moving damper blade. Do not touch the release
mechanism or reach into the fire damper while
actuating the release mechanism.
5.1 FKR-EU with fusible link
NOTICE!
The Z-plate ( Fig. 1 /10.21) is a relevant component
of the ATEX version of the FKR-EU with fusible link,
which ensures a conductive connection between the
thermal release mechanism and the fire damper
casing.
When installing the thermal release mechanism on
the fire damper casing, make sure that one of the
two fastening screws is guided through the circular
recess of the Z-plate.
When dismantling the thermal release mechanism
(Ä Operating and installation manual of the FKR-
EU), the Z-plate must be checked for integrity. If
damaged, replace the entire thermal release mecha-
nism!
The Z-plate must not be changed or removed!
damper blade position indicator
The position of the damper blade (1.2) is indicated by
the vertical or horizontal position of the handle (1.6).
Fig. 7: damper blade position indicator
1. Damper blade (1.2) is closed.
2. Damper blade (1.2) is open.
Functional test
FKR-EU with fusible link
Explosion-proof fire damper Type FKR-EU12

Close the damper blade
Fig. 8: Close the damper blade
Requirement
Fire damper is open.
1. Pull the knob of the thermal release mechanism
(10.14) forwards in the direction of the arrow to
release
2. the cam disc of the handle (1.6).
3. The handle (1.6) swivels automatically in the
direction of the arrow.
4. The damper blade handle is locked in the
CLOSED position and
5. the handle (1.6) shows that the damper blade
(1.2) is closed.
Functional test
FKR-EU with fusible link
Explosion-proof fire damper Type FKR-EU 13

Opening the damper blade
Fig. 9: Opening the damper blade
Requirement
The fire damper is closed.
1. Grasp the handle (1.6) by hand and
2. press the unlocking mechanism (10.22) with your
thumb.
3. Turn the handle (1.6) in the direction of the arrow
to the travel stop.
4. The damper blade (1.2) is locked in the OPEN
position and
5. the handle (1.6) indicates that the damper blade
(1.2) is open.
Functional test
FKR-EU with fusible link
Explosion-proof fire damper Type FKR-EU14

5.2 FKR-EU with ExMax or RedMax
spring return actuator
damper blade position indicator
The position of the damper blade is indicated by the
pointer on the actuator.
Fig. 10: damper blade position indicator
1 Damper blade is closed
2 Damper blade is open
Closing/opening the fire damper with spring return
actuator
Fig. 11: Thermoelectric release mechanism ExPro-TT
1 Push button for functional test
Fig. 12: Functional test (FKR-EU with ExMax actuator
shown in OPEN position)
CAUTION!
Danger of injury when reaching into the fire damper
while the damper blade is moving. Do not reach into
the fire damper while actuating the release mecha-
nism.
Requirement
Power is being supplied
1. Push the push button (1) and keep it pushed.
ðThis interrupts the power supply, and the
damper blade closes.
2. Check if the damper blade is CLOSED, check run
time.
3. Release the push button (1).
ðPower is supplied again, and the damper
blade opens.
4. Check if the damper blade is OPEN, check run
time.
Functional test
FKR-EU with ExMax or RedMax spring return actuat...
Explosion-proof fire damper Type FKR-EU 15

Opening/closing the fire damper using the crank
handle
Fig. 13: Functional test (without power supply)
DANGER!
Danger due to malfunction of the fire damper.
If the damper blade has been opened by means of
the crank handle (without power supply), it will no
longer be triggered by a temperature increase, i.e. in
the event of a fire. In other words, the damper blade
will not close.
To re-establish its function, connect the power
supply.
Requirement
The damper blade is CLOSED
1. Remove the terminal box (1).
2. Insert the crank handle (2) into the opening for the
spring-winding mechanism
(The crank handle is clip-fixed to the connecting
cable.)
3. Turn the crank handle (2) in the direction of the
arrow (3) to the travel stop.
4. Remove the crank handle (2).
ðThe damper blade (1.2) will then CLOSE.
5. Mount the terminal box (1).
Functional test
FKR-EU with ExMax or RedMax spring return actuat...
Explosion-proof fire damper Type FKR-EU16