Rittal SK 3185.330 User manual

Enclosure cooling unit
Assembly and operating instructions
SK 3185.330

Preface
EN
2Rittal enclosure cooling unit Blue e+ Outdoor
Preface
Dear Customer!
Thank you for choosing a "Blue e+ Outdoor" enclosure
cooling unit (referred to hereafter as "cooling unit") from
Rittal.
Yours
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn
Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
www.rittal.com
www.rittal.de
We are always happy to answer any technical questions
regarding our entire range of products.
EN

Rittal enclosure cooling unit Blue e+ Outdoor 3
Contents
EN
Contents
1 Notes on documentation .................. 4
1.1 CE labelling................................................... 4
1.2 Storing the documents.................................. 4
1.3 Symbols used in these operating
instructions ................................................... 4
1.4 Other applicable documents ......................... 4
2 Safety notes ..................................... 5
2.1 General safety instructions ............................ 5
2.2 Operating and technical staff......................... 5
2.3 Other dangers when using the cooling unit ... 5
3 Product description .......................... 6
3.1 Functional description and components........ 6
3.1.1 Function ............................................................... 6
3.1.2 Components ........................................................ 7
3.1.3 Control ................................................................. 7
3.1.4 Safety devices ...................................................... 7
3.1.5 Condensation ....................................................... 7
3.1.6 Door limit switch ................................................... 7
3.2 Proper use, foreseeable misuse .................... 7
3.3 Scope of supply............................................ 8
4 Transport and handling .................. 10
4.1 Delivery....................................................... 10
4.2 Unpacking .................................................. 10
4.3 Transport .................................................... 10
5 Installation ...................................... 11
5.1 Safety instructions....................................... 11
5.2 Siting location requirements ........................ 11
5.3 Assembly procedure ................................... 12
5.3.1 Assembly instructions ......................................... 12
5.3.2 Mounting options ............................................... 12
5.3.3 Make a mounting cut-out in the enclosure .......... 13
5.3.4 Fitting the cooling unit without a mounting frame 14
5.3.5 Fitting the cooling unit with a mounting frame ..... 16
5.3.6 Connect the condensate water discharge .......... 17
5.4 Electrical connection ................................... 18
5.4.1 Notes on electrical installation ............................. 18
5.4.2 Install the power supply ...................................... 20
5.4.3 Connect the alarm relays .................................... 21
5.4.4 Interfaces ........................................................... 21
6 Commissioning .............................. 22
7 Operation ....................................... 23
7.1 General....................................................... 23
7.2 Layout of the display................................... 23
7.2.1 Start screen ........................................................ 23
7.2.2 Changing a parameter value ............................... 24
7.3 Information menu........................................ 24
7.3.1 Temperature information .................................... 24
7.3.2 Device information .............................................. 24
7.3.3 Efficiency information .......................................... 25
7.4 Configuration menu..................................... 25
7.4.1 Temperature ....................................................... 25
7.4.2 Network ............................................................. 27
7.4.3 Alarm relays ....................................................... 28
7.4.4 Language settings .............................................. 28
7.4.5 Self-test .............................................................. 28
7.5 System messages...................................... 28
7.5.1 Occurrence of a malfunction ............................... 29
7.5.2 Display in case of errors ..................................... 29
7.6 List of system messages ............................ 30
8 Inspection and maintenance ........... 33
8.1 Safety instructions for maintenance work ... 33
8.2 Notes on the refrigerant circuit ................... 33
8.3 Maintenance work on the cooling unit ........ 33
8.4 Compressed air cleaning............................ 33
8.4.1 Removing the cover ........................................... 33
8.4.2 Cleaning the components with compressed air .. 34
8.4.3 Re-fitting the cover ............................................. 34
9 Storage and disposal ...................... 35
10 Technical specifications .................. 36
11 List of spare parts ........................... 38
12 Drawings ........................................ 39
12.1 Representation of mounting cut-outs ......... 39
12.1.1 Mounting on single-walled enclosure panels
without a mounting frame ................................... 39
12.1.2 Mounting on single-walled enclosure panels
with a mounting frame ........................................ 39
12.2 Dimensions and installation depths ............ 40
13 Accessories .................................... 41
14 Customer service addresses .......... 42
15 Compact service information .......... 46

1 Notes on documentation
EN
4Rittal enclosure cooling unit Blue e+ Outdoor
1 Notes on documentation
1.1 CE labelling
Rittal GmbH & Co. KG confirms the conformity of the
cooling unit with the European Union's Machinery Direc-
tive 2006/42/EC and EMC Directive 2014/30/EC.
A corresponding declaration of conformity has been is-
sued and enclosed with the unit. These are the original
operating instructions.
1.2 Storing the documents
The assembly and operating instructions as well as all
other applicable documents are an integral part of the
product. They must be issued to everyone who works
with the unit and must always be available and on hand
for operating and maintenance personnel.
1.3 Symbols used in these operating in-
structions
The following symbols are used in this documentation:
This symbol indicates an "action point" and shows that
you should perform an operation or procedure.
1.4 Other applicable documents
Assembly and operating instructions exist as paper doc-
uments for the unit types described here and are en-
closed with the equipment.
We cannot accept any liability for damage associated
with failure to observe these instructions. Where applica-
ble, the instructions for any accessories used also apply.
Danger!
Hazardous situation which will result in
death or serious injury if the instructions
are not followed.
Warning!
Hazardous situation which may lead to
death or serious injury if the instructions
are not followed.
Caution!
Hazardous situation which may lead to
(minor) injuries if the instructions are not
followed.
Note:
Indicates situations that can lead to material
damage.

Rittal enclosure cooling unit Blue e+ Outdoor 5
2 Safety notes
EN
2 Safety notes
2.1 General safety instructions
Please observe the following general safety instructions
for the installation and operation of the system:
– Please be sure to observe the applicable regulations
governing electrical installations of the country in
which the device is installed and operated as well as
national regulations for accident prevention. Please
also observe any internal company regulations, such
as work, operating and safety regulations.
– Use only original Rittal products or products recom-
mended by Rittal in conjunction with the cooling unit.
– Please do not make any changes to the cooling unit
that are not described in these operating instructions
or other applicable assembly and operating instruc-
tions.
– The operational safety of the cooling unit is only war-
ranted if used as intended. The technical specifica-
tions and limit values stated must not be exceeded un-
der any circumstances. In particular, this applies to the
specified ambient temperature range and IP protec-
tion category.
– Operating the cooling unit in direct contact with water,
aggressive materials or inflammable gases and va-
pours is prohibited.
– Other than these general safety instructions, it is also
vital to observe the specific safety instructions when
carrying out the tasks described in the following chap-
ters.
– Please note the maximum weights that may be lifted
by individuals. It may be necessary to use lifting gear.
– Use a sufficiently large pallet to prevent it tipping over.
– If the cooling unit has been mounted on a door, close
the door and keep it closed during transportation.
– The cooling unit must be transported in an upright po-
sition and secured to prevent it from tipping over.
– At ambient temperatures above 30 °C, the surface
temperatures of the cooling unit may exceed the
threshold temperatures for 1st and 2nd degree burns
with contact times ≤1 second.
– At ambient temperatures below -7 °C, the surface
temperatures of the cooling unit may drop below the
threshold values for frostbite with contact times of
≤10 seconds.
2.2 Operating and technical staff
– The assembly, installation, commissioning, mainte-
nance and repair of this cooling unit may only be per-
formed by qualified, trained personnel.
– Only properly instructed personnel may operate a
cooling unit with the system operational.
– Children and persons with limited cognitive/coordina-
tive abilities must not operate, maintain or clean the
unit or be allowed to use it as a toy.
2.3 Other dangers when using the cooling
unit
When installing the cooling unit (see section 5 "Installa-
tion"), there is a risk that the enclosure could become
unbalanced and tip over.
In such cases, the enclosure should be bolted to the
floor as a precaution.
There is also a risk of the cooling unit tipping over after
the mounting frame has been fitted onto the cooling unit.
The cooling unit is only stable whilst the mounting frame
is not fitted.
It is therefore particularly important to brace the unit
and prevent it from becoming unbalanced once the
mounting frame has been installed.
If the air inlet or outlet of the cooling unit is obstructed,
there is a risk of air short-circuits, resulting in inadequate
climate control.
Please ensure that the electronic assemblies in the en-
closure are installed in accordance with section 5.3.1
"Assembly instructions".
Where applicable, use suitable components to divert
the air.
Please observe the prescribed minimum distances at
the installation site as outlined in section 5.3.1 "As-
sembly instructions".
Components inside the cooling unit may get very hot.
There is a risk of burns.
Before removing the cover, allow the device to cool
down for at least 10 minutes to avoid burn injuries from
hot surfaces.
When transporting devices in situ on the enclosure, the
cooling unit could potentially sag in the event of an im-
pact.
Use suitable shipping braces (such as a structure
made from square timbers or boards) during transpor-
tation to prevent the cooling unit from sagging.

3 Product description
EN
6Rittal enclosure cooling unit Blue e+ Outdoor
3 Product description
3.1 Functional description and components
3.1.1 Function
There are two separate cooling circuits installed in the
cooling unit.
– One conventional refrigerant circuit (compression sys-
tem), and
– One heat pipe integrated into the condenser and
evaporator coil.
Fig. 1: Cooling circuit
Key
1 Compressor
2 Condenser (dual version) with fan
3 Expansion valve
4 Evaporator coil (dual version) with fan
5 Refrigerant circuit with heat pipe
6 Refrigerant circuit with compression system
7 Internal circuit
8 External circuit
9 Dryer/collector
10 Internal fan
11 External fan
12 PSAHpressure monitor
In both cooling circuits, the individual components are
connected with pipes in which the refrigerant R134a is
circulating. This refrigerant is very environmentally friend-
ly, thanks to the following properties:
– Chlorine-free
– Does not deplete the ozone layer (ozone destruction
potential ODP = 0)
Refrigerant circuit with compression system
The refrigerant circuit with compression system is com-
prised of the following four main components:
1. Evaporator coil
2. Compressor
3. Condenser
4. Expansion valve
The evaporator coil fan draws hot air from the enclosure
in the internal circuit of the cooling unit and passes it
over the evaporator coil. After the evaporator coil, the
cooled air is fed back into the enclosure via the outlet
opening.
The air is cooled down by evaporating the refrigerant in
the evaporator coil. The refrigerant vapour is transported
by the compressor in the external circuit of the cooling
unit to the condenser. There, the refrigerant condenses
and becomes a liquid. The heat produced is dissipated
by the condenser fan. The downstream electronic ex-
pansion valve reduces the high pressure of the refriger-
ant, and the refrigerant is then fed back into the evapo-
rator coil.
Both the compressor and the two fans in the cooling unit
are activated via an inverter. This makes it possible to
control these components, so that the fan and compres-
sor may be activated for a longer time but at a lower out-
put and improved efficiency.
Refrigerant circuit with heat pipe
The additional second refrigerant circuit operates with-
out a compressor, expansion valve or other control ele-
ments, and is integrated into the evaporator coil and
condenser as a heat pipe.
The refrigerant inside the heat pipe (R134a) absorbs
thermal energy from the intake of enclosure air and
evaporates. The gaseous refrigerant then rises through
the pipeline until it reaches the condenser. The refriger-
ant is cooled down again in the condenser (provided Tu
< Ti), and the heat released is emitted into the environ-
ment. Gravity then causes the liquid refrigerant to flow
back down the pipelines. The whole cycle begins again.

Rittal enclosure cooling unit Blue e+ Outdoor 7
3 Product description
EN
3.1.2 Components
Fig. 2: Main components of cooling unit
Key
1 Crane bracket
2Housing
3Ratingplate
4Evaporatorfan
5Display
6 Connection box
7 Air outlet hole
8 Bottom openings for air inlet
9Cover
10 Top openings for air outlet
3.1.3 Control
Rittal enclosure cooling units are fitted with a controller
for setting the functions of the cooling unit.
Operation using this controller is described in section 7
"Operation".
3.1.4 Safety devices
– In the refrigerant circuit, the cooling units have a type-
tested pressure monitor (to EN 12263) which switches
off the cooling unit if the maximum admissible pres-
sure is exceeded. Once the pressure drops back be-
low the admissible pressure, the unit will automatically
resume operation.
– Temperature monitoring prevents the evaporator coil
from icing over. If there is a risk of icing, the compres-
sor switches itself off and automatically switches itself
back on again at higher temperatures.
– The compressor is monitored and protected by the in-
verter to prevent overloading.
– The fans have a built-in overload protection with auto-
matic reset.
– In order to allow a reduction of pressure inside the
compressor and hence a safe restart, once it has been
switched off (e.g. upon reaching the set temperature
via the door limit switch function or via de-energising),
the device will switch back on with a delay of 180 sec-
onds.
– The device has floating contacts on the connection
pins on terminals 1 and 3 of the signal connector (X2),
via which system messages from the device may be
polled, e.g. using a PLC (2 x normally closed or nor-
mally open contacts).
3.1.5 Condensation
At high levels of humidity and low temperatures inside
the enclosure, condensate water may form on the evap-
orator coil.
The cooling units have an automatic electrical conden-
sate water evaporator. The thermal component used for
this purpose is based on self-regulating PTC technolo-
gy. Condensate water arising on the evaporator coil is
collected in a tank in the external circuit of the cooling
unit, and partially evaporated via the airflow. When the
water level rises, the water enters the PTC thermal com-
ponent and is evaporated (through-flow heater princi-
ple). The water vapour streams out of the cooling unit
with the airflow from the external fan.
The PTC thermal component is activated automatically
when the compressor is running, and continues to run
for around 15 minutes after the compressor has been
switched off. During the after-run phase, the condenser
fan will likewise continue to run at low speed.
In the event of a short-circuit in the PTC component or if
there is a risk of inverter overload (possible at high ambi-
ent temperatures), the PTC component will be deacti-
vated. This means that any condensate water arising
can be discharged via the safety overflow.
If the fuse has tripped, any condensate water is drained
off via the safety overflow. The condensation is routed
downwards out of the unit via a drain pipe on the evap-
orator coil divider panel. For this purpose, a hose may be
connected to the condensate water nozzle (see sec-
tion5.3.6 "Connect the condensate water discharge").
3.1.6 Door limit switch
The cooling unit may be operated with a floating door
limit switch connected. The door limit switch is available
as accessory from Rittal (see section 13 "Accessories",
page41).
The door limit switch function causes the fans and the
compressor in the cooling unit to gradually slow down
and then switch off after approximately 15 seconds
when the enclosure door is opened (contacts 5 and 6
closed). This prevents the formation of condensate wa-
ter inside the enclosure while the enclosure door is
open. In order to prevent damage to the unit, it is
equipped with an ON delay: The evaporator fan will cut
in again after a delay of a few seconds on closure of the
door.
Please note that no external voltage may be applied to
the door contacts (connection clamps 5 and 6).
3.2 Proper use, foreseeable misuse
The cooling unit is designed solely for cooling sealed en-
closures (within the scope of validity covered by
EN60204, EN 61439 and UL 508A), and IT and tele-
communications equipment (within the scope of validity
1
2
3
8
9
10
1
4
5
6
7

3 Product description
EN
8Rittal enclosure cooling unit Blue e+ Outdoor
covered by EN 62368) within the permitted temperature
range, for indoor and outdoor use, and for professional
use as defined in DIN EN 61000-3-2. Any other use is
not permitted.
– Any form of use in potentially explosive areas, outside
the permissible temperature range, on power supply
systems not defined for this unit, on oil rigs and off-
shore installations, on transport routes in tunnels, in
commercial applications such as refrigeration cham-
bers, refrigerated counters and kiosk coolers, as well
as for room air-conditioning, is prohibited.
– The cooling unit is suitable for use in direct sunlight,
snow, rain, sand, dust and condensation.
– The unit is designed solely for stationary use.
The cooling unit is state of the art and built according to
recognised safety regulations. Nevertheless, improper
use can pose a threat to the life and limb of the user or
third parties, or result in possible damage to the system
and other property.
Consequently, the cooling unit must only be used prop-
erly and in a technically sound condition! Any malfunc-
tions which impair safety should be rectified immediate-
ly.
Proper use also includes the observance of the docu-
mentation provided, and compliance with the inspection
and maintenance conditions.
Rittal GmbH & Co. KG is not liable for any damage which
may result from failure to comply with the documenta-
tion provided. The same applies to failure to comply with
the valid documentation for any accessories used.
Inappropriate use may be dangerous. Examples of inap-
propriate include:
– Use of the cooling unit over long periods with the en-
closure open.
– Use of impermissible tools.
– Improper operation.
– Improper rectification of malfunctions.
– Use of accessories not approved by Rittal GmbH &
Co. KG.
3.3 Scope of supply
Qty. Description
1 Enclosure cooling unit
1 Shipping bag with
1– Assembly and installa-
tion instructions
Tab. 1: Scope of supply
6– Threaded bolt M8 x
40 mm
6 – Hex nut M8
6–WasherM8
4 – Corner bracket
2 – L-shaped bracket
16 – Screw M5 x 16 mm
2 – Serrated washer
1
– Sealing tape 10 x
10mm, L = 2.7 m
1 – Sealing section
Qty. Description
Tab. 1: Scope of supply

Rittal enclosure cooling unit Blue e+ Outdoor 9
3 Product description
EN
1 – Mounting frame
1 – Signal connector X2
1–ConnectorX1
1–T-rail
1 – Ferrite core
Qty. Description
Tab. 1: Scope of supply

4 Transport and handling
EN
10 Rittal enclosure cooling unit Blue e+ Outdoor
4 Transport and handling
4.1 Delivery
The cooling unit is supplied in one packaging unit.
Check the packaging carefully for signs of damage.
Traces of oil on damaged packaging indicate a loss of
refrigerant and/or a leak in the cooling unit. Any pack-
aging damage may be the cause of a subsequent
functional failure.
4.2 Unpacking
Remove the packaging materials from the cooling unit.
Check the cooling unit for any damage that may have
occurred during transport.
Check the supply contents for completeness (see sec-
tion 3.3 "Scope of supply").
4.3 Transport
Depending on the chosen version, the cooling unit may
weigh up to 36 kg. The components in the cooling unit
housing account for the bulk of the weight.
There is a crane bracket pre-fitted to the top of the cool-
ing unit. The cooling unit is readily transported with the
aid of lifting gear and an indoor crane.
Fig. 3: Crane bracket on the top of the cooling unit
Key
1 Crane bracket
2Housing
Before transporting by crane, please ensure that the
lifting gear and crane have sufficient load capacity to
transport the cooling unit safely.
Never allow anyone to stand beneath a suspended
load, even for a short time, during transportation by
crane.
Protect the lifting gear on the crane hook from load de-
flection, because the load's centre of gravity may be
off-centre.
First position the cooling unit close to the installation
site and protect from accidentally being knocked over.
Transporting a pre-assembled unit
Shipping braces (such as a structure made from
square timbers or boards) must be used when trans-
porting cooling units already mounted on the enclo-
sure.
These braces support the cooling unit and prevent it
from slipping in case of impact.
Use a sufficiently large pallet to prevent it tipping over.
If the cooling unit has been mounted on a door, close
the door and keep it closed during transportation.
Fig. 4: Shipping braces
Key
1 Fitted cooling unit
2 Supporting structure
3 Pallet underneath the cooling unit
Note:
After unpacking, the packaging materials
must be disposed of in an environmentally
friendly way.
Note:
Damage and other faults, e.g. incomplete de-
livery, should be reported immediately, in
writing, to the shipping company and to Rittal
GmbH & Co. KG.
Warning!
Please note the maximum weights that
may be lifted by individuals. It may be
necessary to use lifting gear.
Note:
For the "external" mounting position (see
section5.3.5 "Fitting the cooling unit with a
mounting frame"), the position of the crane
bracket will need to be modified, otherwise
the mounting frame cannot be screw-fas-
tened to the cooling unit.
2
1
1
3
2

Rittal enclosure cooling unit Blue e+ Outdoor 11
5 Installation
EN
5 Installation
5.1 Safety instructions
Always wear personal safety equipment (gloves and
safety goggles as a minimum) when installing or re-
moving the cooling unit.
Please be sure to observe the applicable regulations
governing electrical installations of the country in
which the device is installed and operated, as well as
national regulations for accident prevention. Please
also observe any internal company regulations, such
as work, operating and safety regulations.
The technical specifications and limit values stated
must not be exceeded under any circumstances. In
particular, this applies to the specified ambient tem-
perature range and IP protection category.
5.2 Siting location requirements
When choosing the installation site for the enclosure,
please observe the following:
– The site for the enclosure, and hence the positioning
of the cooling unit, must be carefully selected so as to
ensure good ventilation (clearance between cooling
units and clearance between a cooling unit and the
wall must be at least 200 mm in each case).
– The cooling unit must be installed and operated with a
maximum deviation of 2° from the vertical.
– The installation site must be free from excessive dirt
and aggressive ambient conditions.
– The maximum humidity (non-condensing) must not
exceed 95%.
– The ambient temperature must not fall below -30 °C or
exceed +60 °C.
– It must be possible to fit a condensate water discharge
(see section 5.3.6 "Connect the condensate water
discharge").
– The mains connection data as stated on the rating
plate of the cooling unit must be guaranteed.
Size of installation room
–Unit SK 3185.330 must not be installed in rooms of
less than 3 m³.
Electromagnetic interference (EMI)
– Signal cables must be laid separately from live cables
(fig. 32).
Designing a suitable enclosure heater
Enclosure heaters are used to prevent the formation of
condensation inside the enclosure, particularly with the
type of fluctuating ambient temperatures that may occur
with outdoor siting or in unheated rooms, and to main-
tain a constant minimum operating temperature (e.g.
when the system is switched off overnight).
Enclosure heaters that regulate relative humidity, pre-
vent temperatures from dropping below the dew point
and stop condensation forming inside the enclosure.
This in turn prevents consequential damages associated
with corrosion and electrical short-circuits.
Rittal recommends you calculate the required enclosure
heater, which should be used in conjunction with a hy-
grostat or enclosure internal thermostat. It is important
to ensure that the enclosure internal temperature does
not drop below -20 °C, because the internal fan will not
operate below that temperature. In such cases, the error
message "Event 102" will appear on the display.
A sample calculation for the Rittal CS Toptec enclosure
series is given below.
Warning!
Please note the maximum weights that
may be lifted by individuals. It may be
necessary to use lifting gear.
Warning!
Work on electrical systems or equip-
ment may only be carried out by an elec-
trician or by trained personnel under the
guidance and supervision of an electri-
cian. All work must be carried out in ac-
cordance with electrical engineering
regulations.
The cooling unit may only be connected
after the aforementioned personnel have
read this information!
Use only insulated tools.
Follow the connection regulations of the
appropriate electrical supply company.
The cooling unit must be connected to
the mains via an all-pole disconnecting
device to overvoltage category III
(IEC 61058).
The cooling unit is not de-energised until
all of the voltage sources have been dis-
connected!

5 Installation
EN
12 Rittal enclosure cooling unit Blue e+ Outdoor
5.3 Assembly procedure
5.3.1 Assembly instructions
Before assembling, please ensure that the enclosure
is sealed on all sides (IP 54 or Type 12). Increased
condensation will occur later during operation if the
enclosure is not airtight.
If applicable, additionally fit a door limit switch (such as
4127010) to the enclosure which switches off the
cooling unit when the enclosure door is opened to pre-
vent excessive condensation (see section 3.1.6 "Door
limit switch").
Please ensure that the electronic assemblies in the en-
closure allow the even circulation of air.
Take care to ensure that the cooling unit and its sur-
roundings are dry at the time of installation.
Always have two people to lift the cooling unit, or pref-
erably use lifting gear and an indoor crane. Ensure that
it is secured against toppling over.
Do not rest the cooling unit on the fitted mounting
frame.
Fig. 5: Never direct the cold airflow at active components
(example illustration)
Under no circumstances should the air inlet and outlet
openings of the cooling unit be obstructed. Only in this
way is it possible to ensure that the maximum cooling
output is available.
Please ensure that the cold airflow from the cooling
unit is not directed at active components.
Fig. 6: Never direct the cold airflow at active components
(example illustration)
If appropriate, install components to divert the air.
When installing in a dismantled door or side panel,
please ensure that it cannot fall over when installing
the cooling unit in the mounting cut-out.
5.3.2 Mounting options
In principle, the cooling unit is suitable for mounting on
single-walled and twin-walled enclosures. There are two
different options for mounting the cooling unit on an en-
closure door or side panel:
–Fittingwithout a mounting frame
–Fittingwith a mounting frame
CS Toptec Dimensions W x H x D mm
Required thermal output [W] at a minimal ambient temperature
-10 °C -20 °C -30 °C
CS 9828.550 800 x 1200 x 800 350 530 720
CS 9868.550 800 x 1600 x 800 430 650 880
CS 9888.550 800 x 1800 x 800 480 810 960
x
Note:
When mounting unit SK 3185.330, the mini-
mum dimensions of the enclosure are
600mm x 1200 mm (width x height), both on
the door and on the side panel.
Note:
The pictures in this chapter illustrate the in-
stallation of the cooling unit in an enclosure
door. Installation in a side panel is carried out
in the same way.

Rittal enclosure cooling unit Blue e+ Outdoor 13
5 Installation
EN
Fitting without a mounting frame
When fitting without a mounting frame, the cooling unit
can only be externally mounted. In such cases, all of the
cooling unit is outside the enclosure.
Fig. 7: Fitting without a mounting frame
Fitting with a mounting frame
When fitting with a mounting frame, there are three dif-
ferent mounting types, depending on where the mount-
ing frame is positioned on the cooling unit:
– External mounting: All of the cooling unit is outside the
enclosure.
– Partial internal mounting: Approximately half of the
cooling unit's depth is inside the enclosure, and the
other half is outside.
– Full internal mounting: All of the cooling unit is inside
the enclosure. Only the cover projects to the outside.
Fig. 8: Mounting options with a mounting frame
Key
1 External mounting
2 Partial internal mounting
3 Full internal mounting
Your chosen installation option will ultimately depend on
how much space you require inside and outside of the
enclosure. The various mounting options have no influ-
ence on the cooling output of the cooling unit, which re-
mains the same in all cases.
If there are a large number of components installed in-
side the enclosure, external mounting or partial inter-
nal mounting of the cooling unit may be appropriate. In
such cases, the space inside the enclosure may be in-
sufficient for full internal mounting, or it may not be pos-
sible to guarantee adequate cooling of all components
inside the enclosure.
5.3.3 Make a mounting cut-out in the enclosure
Twin-walled enclosure
For mounting on a twin-walled enclosure, the appropri-
ate door or side panel must be purchased from Rittal.
Please contact us to discuss your requirements.
Single-walled enclosure
For mounting on a single-walled enclosure, a suitable
mounting cut-out must be made. The mounting cut-out
is the same for all three mounting options, but differs de-
pending on whether it is fitted with or without a mounting
frame.
Note:
The dimensions of the mounting cut-outs
can be found in section 12.1 "Representation
of mounting cut-outs".
1 2 3

5 Installation
EN
14 Rittal enclosure cooling unit Blue e+ Outdoor
Using the diagrams, calculate the required dimensions
for your mounting cut-out.
Drill all the required holes and make the mounting cut-
out.
Carefully deburr all drilled holes and the cut-out to pre-
vent injuries caused by sharp edges.
5.3.4 Fitting the cooling unit without a mounting
frame
Cut the sealing tape provided in the dispatch bag to
the required length so that it can be placed once all
around the rear of the cooling unit.
Start by sticking the sealing tape at the bottom edge,
so that the joint between the two ends of the sealing
tape is likewise on the bottom edge of the unit.
Carefully stick the sealing tape onto the rear. Carefully
go round the screw heads on the inside, as this is the
only way to ensure continuous sealing against the en-
closure.
Fig. 9: Laying the seal
Screw the two threaded bolts into the blind threaded
bushes at the bottom rear of the cooling unit.
Fig. 10: Tighten the threaded bolts at the bottom
In the same way, screw two threaded bolts into the
blind threaded bushes at the top rear of the cooling
unit.
Fig. 11: Tighten the threaded bolts at the top
Lift up the cooling unit, preferably from a crane bracket
using suitable lifting gear, and initially set the cooling
unit down with the two bottom threaded bolts on the
door or side panel of the enclosure.
Caution!
Drilled holes and cut-outs that have not
been fully deburred may cause cut inju-
ries, particularly when assembling the
cooling unit.

Rittal enclosure cooling unit Blue e+ Outdoor 15
5 Installation
EN
Fig. 12: Lower the cooling unit into the mounting cut-out
Attach the two corner brackets to the top threaded
bolts and secure with the corresponding washers and
hex nuts (maximum torque: 5 Nm). Pay particular at-
tention to the correct orientation of the corner brack-
ets.
Fig. 13: Fit the top corner brackets
Next, attach the two corner brackets to the bottom
threaded bolts and secure with the corresponding
washers and hex nuts (maximum torque: 5 Nm). Once
again, pay particular attention to the correct orienta-
tion of the corner brackets.
Fig. 14: Fit the bottom corner brackets
In the centre, screw two threaded bolts into the blind
threaded bushes around halfway up the cooling unit.
Fig. 15: Tighten the central threaded bolts
Next, attach the two L-shaped brackets to the thread-
ed bolts and secure with the corresponding washers
and hex nuts (maximum torque: 5 Nm). Once again,
pay particular attention to the correct orientation of the
L-shaped brackets.

5 Installation
EN
16 Rittal enclosure cooling unit Blue e+ Outdoor
Fig. 16: Fit the central L-shaped brackets
5.3.5 Fitting the cooling unit with a mounting
frame
Please observe the following instructions:
– Full internal mounting of the cooling unit is illustrated
below. External mounting and partial internal mount-
ing are performed in the same way, except that the
mounting frame is positioned differently on the cool-
ing unit.
– Furthermore, for external mounting, the crane
bracket on the cooling unit will need to be moved.
– When mounting on a single-walled enclosure with
mounting frame, screws with an under-head gasket
or blind rivet nuts may be used. Please contact Rittal
if you require further information.
– The customer is responsible for ensuring appropri-
ate mounting on the enclosure.
The mounting frame is included with the cooling unit
supply. The following positions are possible, depending
on the installation position of the cooling unit.
Fig. 17: Possible positions of the mounting frame
Key
1 Rear position for external mounting
2 Central position for partial internal mounting
3 Front position for full internal mounting
Set the cooling unit down on a suitable surface on its
back, taking care not to damage the unit.
Remove the mounting frame from the packaging and
position it in the required mounting position on the
cooling unit.
Fig. 18: Position the mounting frame
Secure the mounting frame in the desired position
using the assembly screws included with the supply
(max. torque: 3.5 Nm).
Note:
Never place the cooling unit on its cover
when fitting the mounting frame.
1 2 3

Rittal enclosure cooling unit Blue e+ Outdoor 17
5 Installation
EN
Fig. 19: Secure the mounting frame to the cooling unit
Using a clean, lint-free fabric or cellular cloth, lubricate
the seal included with the supply with Vaseline or acid-
free oil.
Working from the front, slide the seal over the cooling
unit.
Fig. 20: Slide over the seal position
Ensure that the seal has been pressed into the mount-
ing frame around the entire circumference.
Lift up the cooling unit, preferably from a crane bracket
using suitable lifting gear, and set the cooling unit and
mounting frame down on the door or side panel of the
enclosure.
Fig. 21: Insert the cooling unit
Secure the mounting frame (and hence the cooling
unit) to the door or side panel, e.g. using suitable
screws with washers to ensure a perfect seal between
the frame and the enclosure door or side panel. Only
loosely tighten the screws to begin with, then tighten
crosswise with the required torque, depending on the
type of fastening.
Create potential equalisation between the mounting
frame and the door or side panel using a suitable PE
conductor connection and the serrated washer includ-
ed with the supply.
If applicable, finally, re-attach the door or side panel to
the enclosure if not mounting directly on the enclo-
sure.
5.3.6 Connect the condensate water discharge
There is a condensate water evaporator fitted in the ex-
ternal circuit of the cooling unit. With an enclosure con-
nected, this condensate water evaporator may typically
evaporate condensate water volumes of up to 100 ml/h.
If larger quantities of condensate water are produced, a
condensate water discharge hose may additionally be
fitted. This hose allows condensate water to be routed
out of the cooling unit pressurelessly. A suitable hose is
available as an accessory from Rittal (see section 13
"Accessories").
Please follow the instructions given below:
– The hose must be laid with an adequate and constant
gradient to prevent siphoning.
– The hose must be laid without any kinks.
– If extended, the cross-section of the hose must not be
reduced.
– The hose should be routed to a drain or external con-
densate water evaporator by the customer.
Loosen the three assembly screws at the bottom of
the cover using a special bit for hexagon socket BO
screws, size 3 mm, and pull them off downwards.

5 Installation
EN
18 Rittal enclosure cooling unit Blue e+ Outdoor
Fig. 22: Loosen the assembly screws
Raise the cover slightly and gently pull it forwards
away from the enclosure.
Fig. 23: Raise the cover
Then swing the cover gently to the side.
Fig. 24: Swing the cover sideways
The PE conductor connection between the cover and
the chassis is located on the right-hand side, around
half-way up.
Disconnect the flat-pin connector of the internal PE
conductor, preferably on the enclosure, then remove
the cover completely from the unit.
Connect a suitable hose to the condensate discharge
nozzle and secure using a hose clamp.
Fig. 25: Connection for condensate discharge hose
Key
1 Connection point
2 Hose clamp
3Hose
Lay the hose as per the instructions above.
Re-fit the cover onto the enclosure in the reverse or-
der.
Please note, it is important to ensure that the PE con-
ductor connecting the cover to the enclosure is con-
nected at both ends.
5.4 Electrical connection
5.4.1 Notes on electrical installation
When carrying out the electrical installation, it is impor-
tant to observe all valid national and regional regula-
tions as well as the provisions of the responsible
power supply company.
– Electrical installation must only be carried out by a
qualified electrician who is responsible for compliance
with the existing standards and regulations.
– All cables routed into the wiring compartment have to
be insulated for the maximum voltage of the power
supply.
Connection data
– The connected voltage and frequency must corre-
spond to the ranges stated on the rating plate. The
units support multiple voltages.
– The cooling unit must be connected to the mains via
an all-pole disconnect to overvoltage category III (IEC
61058-1).
– No additional temperature control may be connected
upstream of the unit at the supply end
– To ensure the proper functioning of internal presso-
stats in the event of a malfunction, a slow (time delay)
1
3
2

Rittal enclosure cooling unit Blue e+ Outdoor 19
5 Installation
EN
line fuse of no less than 15 A or 16 A is required (see
section10 "Technical specifications", page36).
– If a motor circuit-breaker or circuit-breaker is used, it
should be selected in accordance with EN 60898-1
(tripping characteristic type D; see section10 "Techni-
cal specifications", page36).
– Low-noise potential equalisation must be guaranteed
with the mains connection.
Overvoltage protection and supply line load
– The unit does not have its own overvoltage protection.
Measures must be taken at the supply end by the
switchgear manufacturer or operator to ensure effec-
tive protection against lightning and overvoltage.
– The units are classified as overvoltage category III and
meet the requirements of EN 60204-1 on the electrical
equipment of machines. The mains voltage must not
deviate by more than the tolerance specified in
section 10 "Technical specifications".
– The discharge current may exceed 3.5 mA.
– The units are high-voltage tested ex works. An addi-
tional high voltage test must only be carried out with a
DC voltage supply source (1500 VDC max.).
– If the combined output of the frequency converters,
power converters or transformers in the network
where the device is being operated is >70 kVA, the
customer must connect a Class II surge voltage pro-
tector in the mains supply line upstream of the cooling
unit. The surge voltage protector must be designed to
EN 61800 -1. The following values may be assumed
as starting-points for the design:
Three-phase devices
– There is no need to observe a counterclockwise or
clockwise phase rotation when making the electrical
connection to a three-phase voltage supply. The elec-
tronics incorporated into the devices automatically
create the required phase rotation.
– In three-phase devices, the absence of a phase is de-
tected, and the device is switched off.
– Outgoing equipment is monitored by the inverter, and
deactivated in the event of a malfunction in the elec-
tricity supply.
Door limit switch
– Each door limit switch can only be assigned to one
cooling unit.
– Several door limit switches may be operated in parallel
with one cooling unit.
– The minimum cross-section for the connection cable
is 0.3 mm² for a cable length of 2 m.
– The line resistance to the door limit switch must not
exceed a maximum of 50 Ω.
– The maximum admissible line length is 10 m.
– The door limit switch only supports a floating connec-
tion; no external voltages.
– The contact of the door limit switch must be closed
when the door is open.
– The safety extra-low voltage for the door limit switch is
provided by the internal power pack: Current approx.
5mADC.
Connect the door limit switch to terminals 5 and 6 of
the signal connector.
Fig. 26: Connections at rear (example illustration)
Key
1 Connection for IoT interface 3124.300 (X3)
2 Connection for signal connector (X2)
3 Connection for mains connector (X1)
Potential equalisation
If, for EMC reasons, the unit is to be integrated into the
customer's existing potential equalisation system, a
conductor may be connected to the potential equalisa-
tion connection point. The connection point is labelled
with the required switch symbol.
Transformers,
power electronics
Assumed discharge
energy
70 kVA…100kVA 40J
100 kVA…200kVA 80J
200 kVA…400kVA 160J
400 kVA…800kVA 320J
Tab. 2: Design of the surge voltage protector
1
2
3

5 Installation
EN
20 Rittal enclosure cooling unit Blue e+ Outdoor
Fig. 27: Connection point for potential equalisation (example il-
lustration)
Key
1ConnectionpointM6
Attach the potential equalisation to the unit's connec-
tion point using the screw, washer and contact wash-
er.
Fig. 28: Potential equalisation arrangement
Key
1 Ring terminal with PE conductor
2 Contact washer
3Washer
4 Screw
5.4.2 Install the power supply
Remove the mains connector from the dispatch bag
and connect to the mains as shown on the connection
diagram (fig. 29 or fig. 30).
Fig. 29: Circuit diagram SK3185.330
Fig. 30: Circuit diagram
Key
X1 Main terminal strip
K1 Relay collective fault 1
K2 Relay collective fault 2
Door Door limit switch (optional, without door limit switch:
terminal 5, 6 open)
NTC External temperature sensor (optional)
X3 RS 485 interface
Create a strain relief
Remove the T-rail from the pack and attach it to the
connection unit.
Fig. 31: Attach the T-rail (example illustration)
Note:
According to the standard, the PE conductor
in the mains connection cable is not classed
as an equipotential bonding conductor.
Note:
– We recommend that the power supply ca-
ble and the signal cable should be of a
shielded design.
– The cable shield can make contact with the
T-rail (fig. 31).
1
✟
3
4
2
1