1Area of application ....................................................................................................................................................................................................................... 3
1.1Use in accordance with BGR 228 .................................................................................................................................................................................... 3
a)CO2 sensor unit .............................................................................................................................................................................................................. 4
b)CO2 warning unit ............................................................................................................................................................................................................ 4
c)AM / AM PLUS add-on module ....................................................................................................................................................................................... 4
e)Switching unit ................................................................................................................................................................................................................. 5
f)Signal unit ....................................................................................................................................................................................................................... 5
i)Mode of operation ......................................................................................................................................................................................................... 6
a)Installation in a dispensing system ................................................................................................................................................................................. 7
b)CO2 CONTROL add-on module installation for a CO2 cooling system ............................................................................................................................ 7
2.1General notes in accordance with BGR 228 ................................................................................................................................................................... 8
2.3CO2 sensor unit installation ........................................................................................................................................................................................... 9
2.4Installing the CO2 warning unit (PA)............................................................................................................................................................................... 9
2.5Setting the geographic height ......................................................................................................................................................................................10
2.6Installing the AM / AM PLUS add-on module ...............................................................................................................................................................11
2.7Installing the distributor ...............................................................................................................................................................................................11
2.8Connecting cables to the distributor ............................................................................................................................................................................12
2.9.1Switching unit ...............................................................................................................................................................................................................12
2.9.2Signal unit .....................................................................................................................................................................................................................12
2.9.4Alarm unit horn/light....................................................................................................................................................................................................13
3.3Re-commissioning after swapping-out .........................................................................................................................................................................14
3.4Instruction for the operator .........................................................................................................................................................................................14
3.5Documentation in the dispensing log ...........................................................................................................................................................................15
4.2Replacing the CO2 sensor unit......................................................................................................................................................................................15
5Technical data ............................................................................................................................................................................................................................16
5.1CO2 CONTROL sensor unit ............................................................................................................................................................................................16
5.2CO2
CONTROL PA warning unit ....................................................................................................................................................................................16
5.3AM / AM PLUS add-on modules ...................................................................................................................................................................................17
5.4Signal unit .....................................................................................................................................................................................................................17
5.5Switching unit ...............................................................................................................................................................................................................18
5.6Accessories / spare parts ..............................................................................................................................................................................................18
6Measures in the event of a malfunction/gas alarm ....................................................................................................................................................................18
8Instructions for the prevention of hazards due to CO
2
gas ........................................................................................................................................................19
8.1Code of conduct ...........................................................................................................................................................................................................19
These assembly and operating instructions contain all of the information necessary for the installation, commissioning and maintenance of the CO2 CONTROL
CO
2
gas detection system.
0.1Safety information
Symbol Definition
1Area of application
1.1Use in accordance with BGR 228
The CO2 CONTROL gas detection system was designed in accordance with the requirements of the former TRSK 313 (Technical Requirements for Gas Detection
Devices), the current DIN6653-2 and the former TRSK 403 (Requirements for Installation, Operation and Repair), and today in accordance with BGR 228, and
complies with all statutorily required functions. However, this is only applicable to CO2 CONTROL security systems which are calibrated for 1.5% CO2 preliminary
alarm and 3% CO2 main alarm signals!
Since 07/05/1996, the legislative authority requires special protective measures in order to be able to prevent hazards due to gas leaks (Betr.Sich.V.).
A specific protective measure requires premises 1.5 m below ground level to be fitted with permanent ventilation/floor extraction, or alternatively, a gas
detection system. Walk-in cold chambers must always be secured, regardless of their installation location!
1.2Use in refrigeration systems with CO
2
coolant
Special safety system requirements, in CO2 CONTROL PA, CO2
CONTROL AMand CO2 CONTROL AM PLUS versions, are installed for the monitoring of
refrigeration systems (DIN EN 378) with CO
2
coolant, mainly in the food trade and processing industries.
Normally, the machine room, freezers, cold chambers and partially refrigerated access ways are monitored. In supermarkets, staff rooms are also monitored
when these come into contact with the coolant lines.
1.3System description
Method of measurement:
CO
2
is detected using an infra-red measurement system in the sensor unit.
System structure:
As a base system, the CO2 CONTROL basic package consists of a sensor unit, a warning unitand a distributor. Where multiple spaces are at risk, the system can
be expanded to include a second sensor unit.
Optionally, the system can also be expanded to up to 2 devices (any combination of signal units / switching units).
Caution! Observe the instructions in the manual!
CO2 CONTROL - assembly and operating instructions
-4-
a)CO2 sensor unit
The sensor unit is installed in the hazard area and is connected by means of a distributor to the warning unit. A visual and audible warning on the sensor unit
enables warnings even in the hazard area itself.
b)CO2 warning unit
The warning unit is installed in front of the hazard area and warns individuals wishing to enter the area of a potential hazard.
c)AM / AM PLUS add-on module
The add-on module includes the PA warning unit and enables operating states to be forwarded internally as 230 V / 50 Hz or via a floating external power
supply. The AM PLUS variant features a large integrated alarm light with horn and additional alarm equipment can be connected. The basic functions are
identical to those of the CO2 CONTROL standard variant.
Caution!
100 dB
acoustic
signal
CO2 CONTROL - assembly and operating instructions
-5-
d)Distributor
The distributor and control lines connect all of the components into a system.
e)Switching unit
The switching unit canactuate power consumption devices, such as fans or external signal devices, in the event of an alarm.
f)Signal unit
The signal unit is connected to the warning unit (central unit) and is used when multiple entry areas must be secured in the hazard area (additional cellar
entrances, doors). The signal unit can also be used as a monitoring display in the counter area.
The signal unit has no central function, but merely serves as an additional visual/audible indicator unit.
CO2 CONTROL - assembly and operating instructions
-6-
g)Alarm unit
The 230 V version of the alarm unit is used to provide additional visual and audible alarms in hazard areas as well as in the entrances to hazard areas.
When used in combination with the CO2 CONTROL AM version, these can be directly connected, supplied with power, and their alarms switched off directly on
the add-on module.
h)Luminous warning panel
The 230 V and 24 V versions of the luminous warning panel is used to provide additional visual alarms in the entrances to hazard areas.
i)Mode of operation
The sensor unit determines the CO
2
content of the air and transmits the measured values to the warning unit. CO2 CONTROL has 2 alarm thresholds.
Under normal operating conditions, the green power light is lit.
Pre-alarm:
The pre-alarm is triggered when a CO
2
content of 1.5% is exceeded. An intermittent warning sound and the flashing red LED on the warning unitand sensor unit
indicate a hazard.
Main alarm:
When the CO
2
content increases above 3%, the main alarm is triggered. This is indicated by means of a continuous sound and continuously lit red LED on the
warning unitand sensor unit.
When the main alarm is triggered, no further access to the hazard area must be allowed!
The hazard can only be eliminated by switching on a fixed or mobile air extraction unit or
by the fire brigade!
All audible signals can be switched off by pressing the Alarm off key.
In the event of a pre-alarm, the visual alarm indicator switches off automatically once the gas concentration drops to normal levels. In the event of a main alarm,
the visual alarm indicator can only be switched off by once again pressing the key if the CO
2
gas concentration is lower than 1.5%. If the gas concentration is
between 1.5% and 3%, the indicator will switch from continuous to flashing light.
In the event of a system fault due to a cable break, short-circuit, sensor failure or other cause, the yellow indicator (Fault) on the warning unitand sensor unit
and/or the green flashing LED on the signal unit will flash and an audible signal will sound; these can be acknowledged and/or cancelled by pressing the key. The
yellow indicator will remain lit until the system fault is eliminated and acknowledged by once again pressing the key.
Alarm
off
CO2 CONTROL - assembly and operating instructions
-7-
When used in freezer units, the sensor units must be adjusted to the ambient temperature
before commissioning. Otherwise, undefined fault messages will be shown, which will
disappear once the sensor units are acclimatised. Only then will your system be ready to run!
1.4System configuration
The sensor unit is installed in all spaces at risk (cellars/cold rooms, storage areas and holding spaces for gas cylinders, freezer units, etc.).
The warning unit/add-on module must be installed directly in front of the hazard area.The warning unitand sensor unit are connected to each other by means
of a distributor.
The switching unit switches on an extraction unit or other power consumption device in the event of an alarm. The signal unit secures the hazard area from
further access.
The warning unit must be installed immediately in front of the entrance to the hazard
area! Where there are multiple entrances to the hazard area, a signal unit and/or
additional alarm unit must be installed in front of each additional entrance!
a)Installation in a dispensing system
b)CO2 CONTROL add-on module installation for a CO2 cooling system
In grocery stores, cold rooms, freezer rooms and machine rooms are mostly secured with CO2 CONTROL AM. Alarm and fault messages are controlled at the
refrigeration control system. Alarms are acknowledged directly in a decentralised manner on the add-on module.
Counter
Additional signal unit can be installed directly on the counter
as an indicator. (optional)
Warning unit
Distributor
Cellar
Door
Sensor unit 2
Holding spaces
CO2
bottles
Distributor
Switching unit
Sensor unit 1
30 cm
Cellar entrance
Supply of the CO2 CONTROL unit by
superordinated control
Superordinated control
1.
Cooling unit
2.
Cooling unit
3.
Cooling unit
4.
Cooling unit
5.
Cooling unit
6.
Cooling unit
CO2 CONTROL - assembly and operating instructions
-8-
2Assembly
2.1General notes in accordance with BGR 228
The gas detection system installer is responsible and therefore liable for the correct
installation and handover of the equipment.
Gas detection devices (equipment requiring special monitoring) may only be planned,
installed and maintained by specialist personnel.
To ensure safe operation, only ancillary components approved by KUNDOxT may be
connected to the CO2 CONTROL safety system.
BGR 228 /DIN 6653-2 stipulates all of the statutory measures and the state of the art for the installation and operation of gas detection equipment in dispensing
systems.
DIN EN 378 refers to the state of the art for the application, operation and functional checking of gas detection devices in the refrigeration field.
The rules therein must normally be observed and complied with. All further measures for the installation/assembly of the CO2 CONTROL gas detection system
are given in the sections below.
Note: Please observe the separate assembly instructions for CO2 CONTROL AM!
2.2System design
The overview identifies the possible system component connections via the distributor. The PA version has a second control line (5-wire) to the building
control/control system.
The sensor unit may only be operated in an upright, assembled condition (see Fig.).
The CO2 CONTROL version is supplied with power through the control line from the building control/control system. An input for power supply and control is
available for additional alarm units.
CO2 CONTROL AM / AM PLUS basic package
CO2 CONTROL PA basic package
Expansion with a second sensor unit
Signal unit
to secure further
entrances/doors
Expansion with a second sensor unit
Signal unit
to secure further
entrances/doors
- control line 3m
- control line variabel
Sensor unit 1
Sensor unit 2
Distributor
Switching unit
Distributor
Distributor
Warning unit
potential free
outputs
(PA, MA, Fault and Operation)
- control line 3m
- control line variabel
Switching unit
Sensor unit 1
Sensor unit 2
Distributor
Distributor
Distributor
Supply 230V, control outputs
(PA, MA, Sum, Fault and Operation)
Connection
for an
external
Alarm unit
AM /
AM Plus
CO2 CONTROL - assembly and operating instructions
-9-
2.3CO2 sensor unit installation
Select an installation point in such a way that:
- The sensor unit is not exposed to direct draughts. When used in freezer rooms, the sensor unit must first be acclimatised to the ambient temperature.
- The sensor unit reaches the deepest point in the monitoring area
- It is approx. 30 cm away from the floor
- The sensor unit can be installed on a vertical wall
- The sensor unit is protected from mechanical impacts as far as possible
Drill two holes at a distance of 40 mm with an 8 mm drill and insert the dowels (1). Use the screws (3) to screw the DIN rail (2) to the wall and tighten the screws.
Position the lower part of the sensor unit (4) housing onto the rail from above, and press the sensor unit downward until the clamping mechanism snaps in with
an audible click. The sensor unit can be removed again from the DIN rail by pulling the terminal snap-in mechanism.. Secure the control cable to the sensor unit
using the plug (5). Tighten the union nut on the plug.
A maintenance plate is mounted on the sensor unit. Mark this with the next replacement date with a ballpoint pen or screwdriver. This should be replaced every
4 years of operation.
CO2 sensor unit installation
2.4Installing the CO2 warning unit (PA)
As a precondition for installation, a qualified electrician must first of all install a power distributor or socket at ceiling height in the entrance area.
The warning unit is fitted with a 2.5 m long power cable and plug. The warning unit can be connected to the mains power either permanently, or via a plug. You
must make sure that a continuous power supply can be ensured.
The PA warning unit can only be permanently connected to a 230 V / 50 Hz power supply and comes with a plug for the necessary "one-man initialisation".
A permanent installation may only be performed by a qualified technician (electrician)!
The warning unit must be installed immediately in front of the danger area!
Disconnect the PA warning unit during initialisation and
when switching off the power.
CO2 CONTROL - assembly and operating instructions
-10-
Select the mounting point in such a way that a system warning cannot be ignored before entering the danger area.
Please only use sockets and circuits which are constantly in operation and which cannot be
switched on and off as required!
The PA version provides 4 floating outputs for switching. Pre-alarm, main alarm, operation and fault messages can be forwarded.
CO2 CONTROL PA version
Connection and colour layout of the floating outputs
CO2 CONTROL AM / AM PLUS versions
See CO2 CONTROL AM / AM PLUS assembly instructions
2.5Setting the geographic height
On the side of the warning unit, there is a rotary switch for setting the location height at which the detection system is installed. Ask the operator the height of
the restaurant above sea level. Check this against the height range given in the table and set the position (0...9) of the switch so that the number on the switch is
above the marking on the housing.
Level
Height [m]
above sea level
0
0 .. 250
1
250 .. 500
2
500 .. 750
3
750 .. 1000
4
1000 .. 1250
5
1250 .. 1500
6
1500 .. 1750
7
1750 .. 2000
8
2000 .. 2250
9
2250 .. 2500
An input voltage for the PA outputs of up to
max. 60 VDC / 125 VAC at max. 0.5 A can be
applied.
white: Input 24V AC/DC
grey: Pre-alarm
brown: Main alarm
green: Operation
yellow: Fault
Setting of the
altidude above sea
level according to
the table
After setting the height,
the housing on the rotary
switch must be sealed
with the attached
transparent adhesive film!
CO2 CONTROL - assembly and operating instructions
-11-
2.6Installing the AM / AM PLUS add-on module
(see CO2 CONTROL AM / AM PLUS assembly instructions)
2.7Installing the distributor
The distributor housing is screwed to the wall using two screws/dowels. In order to seal the housing, the screw penetration points (1) are sealed with the included plugs. Alternatively,
the distributor can also be attached to the wall using external brackets (2).
The lid can be secured with the included retaining strap to prevent it falling down (3).
The control cables can be simply pushed through the penetration membrane (IP 66) (4).
If a higher IP class than IP66 is necessary then an M20 screw connection must be used (not included in the scope of delivery). To do this, remove the membrane completely and add the
M20 screw connection in its place (5).
1
2
4
3
5
CO2 CONTROL - assembly and operating instructions
-12-
2.8Connecting cables to the distributor
This accessory comprises four terminals (WAGO 221-415 / 5 poles) (6).There is a terminal for each wire color of the control line.
The control cables can be connected to the terminals stripped in accordance with the diagram or using the standard wire end ferrule. Please ensure that the cables are only connected
to cables of the same colour.
First open the clamping levers on the terminals (7). Now feed the control cables with the wire end ferrules or stripped for at least 11 mm into the terminals. Finally close the clamping
levers (8) and check whether the cable is correctly in place.
2.9Accessories
2.9.1Switching unit
In the event of an alarm, the switching unitcan actuate power consumption devices such as a fan, additional visual and audible warning signals with a maximum
load of 16 A.
The switching unit is connected by means of a distributor to the warning unit (see 2.2).
The switching unit itself can be plugged into a 230 V / 50 Hz power socket.
On the rear of the unit, you will find a switch inserted into the housing. This allows the relay to be selected in the event of a main or pre-alarm.
2.9.2Signal unit
The signal unit is installed in the same way as the warning unit (2.4).
Like all of the other system components, the signal unit is connected by means of the distributor to the warning unit. The control lines are connected to the
distributor in a colour-identical manner as shown in 2.5.
A plug and/or permanent connection is necessary for independent power supply.
When initialising the entire system (on the warning unit only!), you must ensure that the
mains power is provided to the signal unit; i.e. the signal unit must be running during
initialisation.
Switch
Pre-alarm
Main alarm
Pilot light
Plug-in connection for control line
6
7
8
CO2 CONTROL - assembly and operating instructions
-13-
2.9.3Protective guard
The sensor unit can optionally be fitted with a protective guard to protect it against external damage. Two versions are available: in widths of 30 mm and 80 mm.
When installing the protective guard, please ensure that the indicator light on the sensor unit remains visible.
Mount the protective guard with 2 wall dowels over the sensor unit directly onto the wall, as shown in the Figure below.
2.9.4Alarm unit horn/light
(see alarm unit installation instructions)
3Commissioning/system check
3.1Initial commissioning
System initialisation
Once the complete gas detection system has been installed, the system must be initialised using the warning unit. For the CO2 CONTROL AM / AM PLUS
versions, see the additional notes in the CO2 CONTROL AM / AM PLUS installation sheet.
1. If the system is to be supplied with power from the mains plug, before inserting the mains plug, the ALARM OFF button on the warning unit must be pressed
until the buzzer sounds. Then, release the button. Upon a successful start of initialisation, you will hear a short beep and ticking from the warning unit.
The system will then initialise by itself. The process ends with 4 short signal sounds and the green power lights on the system components will light. After this,
each device must be checked to ensure that all of their green power lights are lit. If this is not the case, the procedure described above must be repeated.
2. If the system is to be connected directly via the distributor (230 V / 50 Hz) to the power supply, the fuse for the corresponding circuit must be switched off
and switched on again with the ALARM OFF button pressed until the buzzer sounds. Then, release the button. The initialisation process will then continue in the
same way as in 1. above. For the AM and AM PLUS versions, see the notes on the CO2 CONTROL AM / AM PLUS installation sheet.
Once initialisation is complete, check all of the connected components to ensure that the
green operating lights are lit!
In the event of a faulty power light, check the system once again and repeat the
initialisation process.
When initialisation fails, the system will switch to alarm mode after approx. 2 minutes.
Alarm
off
+ =
Initialization
CO2 CONTROL - assembly and operating instructions
-14-
3.2System check
Once initialisation is complete, the system's function can be checked by means of CO
2
contact testing. The CO
2
concentration should be between 3% and 100 %
in order to trigger an alarm.
The blue protective cover on the sensor unit is fitted with a nozzle, through which gas can be fed into the sensor unit. If the gas has a CO
2
concentration of 1.5%,
it will trigger the pre-alarm; at 3% CO
2
, it will trigger the main alarm.
Test the fault message by disconnecting the plug on a sensor unit.
When used in freezer units, the sensor units must be adjusted to the ambient temperature
before commissioning. Otherwise, undefined fault messages will be shown, which will
disappear once the sensor units are acclimatised. Only then will your system be ready to run!
3.2.1In-service inspections
a)Gastronomy
Periodic inspections by a nationally recognised body for periodic inspections will allow a check of the correct entries for the gas detection system in the
dispensing log, the approval of the system and the regular maintenance of the equipment.
The time left till the next maintenance can be seen on the maintenance plate on the sensor unit or in the dispensing log sheet.
b)CO
2
refrigeration
Regular annual checks of the safety device in accordance with DIN EN 378, during which alarm triggering with CO
2
is not only used to check the CO2 CONTROL
but also in particular the transmission and subsequent actions by the control system and/or building management system. No checks of the alarm thresholds
and their tolerance ranges with a test gas are required! Calibration is performed at our plant after 4 years of operation, by swapping out the sensor on site. For
further details, please see the CO2 CONTROL AM / AM PLUS installation instructions.
3.2.2Power failure
The green power light will turn off in the event of a power failure. Once the power supply is restored, the unit will reset to its start mode prior to the power
failure. No work on the device is required after a power failure. The unit will continue to run seamlessly in operating mode.
3.3Re-commissioning after swapping-out
The sensor unit must be replaced after 4 years of operation. The operator will receive a re-conditioned replacement unit. The old sensor unit will be checked for
functionality, cleaned and calibrated at our plant. When the sensor unit is swapped out, the gas detection system must be re-initialised (see 3.1 System
initialisation and the additional notes in the CO2 CONTROL AM / AM PLUSinstallation sheet for the CO2 CONTROL AM / AM PLUS versions).
Re-commissioning after system expansion
When the system is subsequently expanded (with a second sensor, signal unit or other), the entire system must be re-initialised once the components have been
installed (see 3.1).
When used in freezer units, the sensor units must be adjusted to the ambient temperature
before commissioning. Otherwise, undefined fault messages will be shown, which will
disappear once the sensor units are acclimatised. Only then will your system be ready to run!
3.4Instruction for the operator
Once the gas detection system has been successfully installed, the operator and their staff must be trained to use the equipment.
The following points must be explained:
- Functionality
- Recognising and differentiating between the pre- and main alarms
- Recognising malfunctions
- Measures to be taken in the event of a gas alarm (see Chapter 6)
- Entries in the dispensing log / test documentation
The operator is responsible in accordance with the Betr.Sich.V. for informing and training
their staff about the gas detection system and their behaviour in the event of a gas alarm!
CO2 CONTROL - assembly and operating instructions
-15-
3.5Documentation in the dispensing log
The gas detection system must be documented in the dispensing log.
This is done using the "Dispensing log sheet" form which is included in the basic package. The form must be completed together with the operator.
By signing this, the operator confirms the functionality of the gas detection system and their complete understanding of the system.
An additional maintenance plate will also be glued to the dispensing log sheet.
The sensor unit must be exchanged after
four years!
If the exchange date as shown here is
not adhered to, system malfunctions
may occur.
I.
II.
III.
IV.
next exchange!
2020
2021
2022
2023
Recurrent tests and functional checks (of the pre-/main alarm, faults) should also be entered into the dispensing log sheet, together with the date of the test.
For the CO2 CONTROL AM / AM PLUS versions, see the additional notes in the CO2 CONTROL AM / AM PLUS installation sheet.
4Maintenance / servicing
4.1General remarks
Safety devices on monitoring equipment must be maintained regularly at the intervals specified by the manufacturer.
The maintenance of the equipment can for example be performed in accordance with BGR 228 by the installation company. The system is maintenance-free
except for the sensor unit. The sensor unit must be replaced by the installer with a replacement unit after 4 years of operation.
4.2Replacing the CO2 sensor unit
The removal of a sensor unit without connecting a replacement unit is prohibited!
The installer can request replacement units directly from our plant.
A replacement unit must be available before replacing any sensor unit. The seamless operation of the gas detection unit must be ensured.
After swapping the units, pack the old sensor unit in the packaging of the replacement unit and send this back to our plant. After replacing any system
component, the system must be re-initialised!
Important note:
After replacing, the new maintenance plate indicating the replacement date must be applied to the sensor unit, and entered in the dispensing log sheet.
The sensor unit must be exchanged after
four years!
If the exchange date as shown here is
not adhered to, system malfunctions
may occur.
I.
II.
III.
IV.
next exchange!
2020
2021
2022
2023
4.3Cleaning
Cleaning of the unit is not planned for, nor is this permitted.
4.4Functional check
A functional check (minimum requirement for the monitoring of detection devices in accordance with BGR 228) of the CO2 CONTROL is not required, and not
necessary due to any maintenance replacement. Where desired, the system can be tested using CO
2
at any time, and the alarm function checked. No test gas is
necessary for this! Since an on-site functional check does not provide sufficient testing of the threshold value tolerances (lack of temperature and pressure
constants), this can only be performed at our plant in accordance with the prescribed test guidelines.
For the CO2 CONTROL AM / AM PLUS versions, see the additional notes in the CO2 CONTROL AM / AM PLUS installation sheet.
CO2 CONTROL - assembly and operating instructions
-16-
5Technical data
5.1CO2 CONTROL sensor unit
Technical data
Alarm thresholds:
1.5% - visual/audible pre-alarm
3% - visual/audible main alarm
Method of measurement:
Selective IR absorption
Measurement range/volume flow:
0 - 5 vol. % / diffusion
Cross-sensitivity:
negligible
Connection:
RS485 bus connection
3 m control line, 4-wire
Max. control line length
(extension via distributor)
max. 100 m to the warning unit
Power supply:
via warning unit (7 - 20 V DC)
Temperature range:
Storage temperature range
Operating temperature range
-30 °C to + 70 °C
-30 °C to + 40 °C
* < 0 °C requires acclimatisation prior to operation
Visual display/audio
LED green Power light
LED yellow Malfunction / 70 dB alarm sound
LED red Alarm / 70 dB alarm sound
Readiness for operation:
Immediately following initialisation (*after
acclimatisation)
Dimensions (H x W x D):
80 x 108 x 80 mm
Weight:
325 g
Protection rating:
IP54
Fastening
via DIN rail, perpendicular to the wall
Certified according to:
TRSK 313, test no. 432 - 986701
* For use in one freezer cell
5.2CO2
CONTROL PA warning unit
Technical data
Alarm thresholds:
1.5% - visual/audible pre-alarm
3% - visual/audible main alarm
Malfunction
Yellow LED flashes plus audible warning sound
Connection:
RS485 bus connection
3 m control line, 4-wire
Mains cable, 2.5 m, incl. angled plug
PA warning unit version
4 floating outputs, external power supply up to
60 VDC/125 VAC at max.0.5 A, 3 m control line
5-wire
Rated voltage:
Rated current / rated output:
230 V / 50 Hz
10 mA / 6 W
Temperature range:
Storage temperature range
Operating temperature range
-20 °C to +70 °C
0 °C to +40 °C
Readiness for operation:
Immediately following initialisation
Visual display:
LED green Power light
LED yellow Malfunction
LED red Alarm
Audible warning
>90 dB
Weight:
200 g
Protection rating:
Design protection class:
IP54
Protection class II
Dimensions (H x W x D):
125 x 80 x 52 mm
Device plug-in possibilities:
max. 2 sensor units
max. 2 actuators (signal unit / switching unit)
Certified according to:
TRSK 313/DIN 6653-2
Test no. 432 – 986701, EC conformity 2013
CO2 CONTROL - assembly and operating instructions
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5.3AM / AM PLUS add-on modules
AM / AM PLUS add-on modules such as "5.2 CO2 PA warning unit" in addition:
Technical data
Alarm thresholds:
1.5% - visual/audible pre-alarm
3% - visual/audible main alarm
Malfunction
Yellow LED flashes plus audible warning sound
Connection:
Block 1: 230 V / 50 Hz power supply
Block 2: 2 contacts (230 V or external floating
power supply) (horn / lamp)
Block 3: 5 contacts (230 V or external floating
power supply) (Sum alarm / Operation /
Malfunction / Pre-alarm / Main alarm)
Contacts active = closed (NO)
Rated voltage:
Nominal power:
Maximum current load per output:
230 V / 50 Hz
23 VA (max.) / 10 VA (type)
2 A / 230 V AC)
Temperature ranges:
Storage temperature range
Operating temperature range
-20 °C to +70 °C
0 °C to +40 °C
Readiness for operation:
Immediately following initialisation
Additional visual displays:
AM PLUS
Flashing / continuous light, red
Audible warning sound AM PLUS
typ. 100 dB
Weight:
AM 1000 g / AM PLUS 1200 g
Protection rating:
Design protection class:
IP54
Protection class II
Dimensions (H x W x D):
220 x 205 x 52 (122) mm
Device plug-in possibilities:
External alarm unit
Declaration of Conformity
EC conformity 2015
5.4Signal unit
Technical data
Alarm thresholds:
1.5% - visual/audible pre-alarm
3% - visual/audible main alarm
Malfunction:
Green LED flashes, audible warning sound
Connection:
RS485 bus connection
3m control line, 4-wire
Mains cable, 2.5 m, incl. angled plug
Control line length:
max. 100 m to the warning unit
Rated voltage:
Rated current / rated output:
230 V / 50 Hz
10 mA / 6 W
Temperature range:
Storage temperature range
Operating temperature range
-20 °C to +70 °C
0 °C to +40 °C
Readiness for operation:
Immediately following initialisation
Visual display:
1 LED green Power
1 LED red Pre-alarm
1 LED red Main alarm
Audible warning
>90 dB
Weight:
200 g
Protection rating:
Design protection class:
IP54
Protection class II
Dimensions (H x W x D):
125 x 80 x 52 mm
Fastening
DIN rail
Certified according to:
TRSK 313
Test no. 432 - 986701
CO2 CONTROL - assembly and operating instructions
-18-
5.5Switching unit
Technical data
Rated voltage:
Rated current / rated output:
230 V / 50 Hz
10 mA / 6 W
Max. switching current:
16 A
Control line:
RS485 bus connection
3 m control line, 4-wire
Power light:
Green LED
Control line length:
max. 100 m to the warning unit
Control line connection:
via plug connection
Dimensions:
66 x 125 x 50 mm
Weight:
200 g
Protection rating:
Design protection class:
IP 00
Protection class II
Switching thresholds:
Pre-alarm or main alarm
System configuration:
max. 2 switching units per system
5.6Accessories / spare parts
Designation
Order number
Protective guard, to protect the sensor unit from damage, 30 mm
I99/0023-03
Protective guard, to protect the sensor unit from damage, 80 mm
I99/0023-07
Connection distributor
I99/0023-01
Alarm unit
I99/0023-08
Control cable
I99/0023-02
Sensor unit (replacement unit within warranty period)
I06/0001-00 A
Sensor unit (maintenance replacement with new 4-year warranty)
I06/0001-00 C
Luminous warning panel, 230V/50Hz
I99/0023-09
Luminous warning panel, 24V
I99/0023-06
6Measures in the event of a malfunction/gas alarm
For the CO2 CONTROL AM / AM versions in a CO
2
refrigeration equipment area, please observe the notes in the CO2 CONTROL AM / AM PLUS installation sheet!
When the main alarm is triggered, no further access to the hazard area must be allowed!
To eliminate the hazard, an extraction unit (where available) must be actuated or the local
fire brigade must be called.
Alarm mode
Display
Measure
Main alarm
Continuous
warning sound, red
warning light lit
Keep calm!
Do not enter the hazard area!! Press the Alarm off
key to switch off the warning sound. Open all doors
wide open!
1. Switch on fans (where available).
2. Leak elimination by service team.
3. Only call the fire brigade to eliminate a hazard if
there is no other way to eliminate the hazard.
4. Once the hazard has been eliminated, press the
Alarm off key on the warning unit to reset the
system to normal operating conditions; if the red
LED remains lit, CO
2
in excess of 3% is still
present!
CO2 CONTROL - assembly and operating instructions
-19-
Alarm mode
Display
Measure
Pre-alarm
Intermittent
warning sound, red
warning light
flashes
Only enter the hazard area if a second person is
present adjacent to the hazard area. Open all doors
wide open!
1. Shut off all of the gas bottles.
2. Find and fix the leak and/or fault.
Call in the dispensing system service team if
necessary!
3. When the CO
2
content drops below the threshold
value, the alarm will reset automatically.
Fault
Continuous
warning sound,
yellow warning
light lit
These can include:
1. Cable break → The cable must be replaced
2. Device fault → Replace the component
3. Sensor unit fault → Replace the sensor unit
4. When replacing the sensor unit with no
re-initialisation → Initialise the system
5. Heavy smoke → Eliminate the cause; the system
will return to operating mode by itself
6. Severe sudden temperature variations → After a
short time, the system will return to normal
operating mode
Pressing the ALARM OFF key will restart the gas
detection system. If the system fault reoccurs, the
equipment will need to be repaired by the service
team.
7Warranty
KUNDOxT provides a warranty for technical defects arising from the manufacture of the gas detection system within 24 months following the date of assembly
and commissioning.
The device is designed and certified in accordance with TRSK313, and today in accordance
with DIN 6653-2.
It must not be modified in any way. Any change to the device will void any warranty claims!
The warranty covers the replacement or repair of the device free of charge. Additional costs incurred thereby are not covered.
The warranty is only valid when the card attached to the device is retained by the equipment operator, and the attached postcard has been completed by the
installation service and returned by the owner.
Please ensure that the serial number of the installed device is entered on the postcard.
KUNDOxT guarantees that the system requires no calibration and/or adjustments within 4 full years of operation. After 4 years of operation, a calibration will be
performed at our plant at cost (see 4. Maintenance).
8Instructions for the prevention of hazards due to CO
2
gas
8.1Code of conduct
1.Keep calm!
2.Acknowledge the audible alarm by pressing the "ALARM OFF" key on the warning unit, and another alarm off switch on the AM / AM PLUS version.
3.Determine which alarm is involved!
Main alarm: Continuous sound, Red light lit
Pre-alarm: Intermittent warning sound Red light flashes
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