Rittal LCP Rack CW User manual

LCP Rack CW
LCP Inline CW
LCP Rack CWG
LCP Inline CWG
3314.130/230/260
3314.530/560
3314.540/542
3314.250/550/570
Assembly and operating instructions

Foreword
2Rittal Liquid Cooling Package
Foreword
Dear Customer!
Thank you for choosing a Rittal Liquid Cooling Package
(referred to hereafter also as "LCP").
This documentation applies to the following units in the
LCP series (global version):
– LCP Rack CW
– LCP Inline CW
– LCP Rack CWG
– LCP Inline CWG
Those sections where information only applies to one of
the units are labelled accordingly in the documentation.
Please take the time to read this documentation careful-
ly.
Please pay particular attention to the safety instructions
in the text and to section2 "Safety instructions".
This is the prerequisite for:
– secure assembly of the Liquid Cooling Package
– safe handling and
– the most trouble-free operation possible.
Please keep the complete documentation readily availa-
ble so that it is always on hand when needed.
We wish you every success!
Your,
Rittal GmbH & Co. KG
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn, Germany
Germany
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
www.rittal.com
We are always happy to answer any technical questions
regarding our entire range of products.

Rittal Liquid Cooling Package 3
Contents
Contents
1 Notes on documentation .................. 5
1.1 CE labelling................................................... 5
1.2 Storing the documents.................................. 5
1.3 Symbols in these operating instructions ........ 5
1.4 Other applicable documents ......................... 5
1.5 Normative instructions .................................. 5
1.5.1 Legal information concerning the operating
instructions ........................................................... 5
1.5.2 Copyright ............................................................. 5
1.6 Software update ........................................... 5
2 Safety instructions ............................ 6
2.1 General safety instructions ............................ 6
2.2 Safety instructions for transportation............. 6
2.3 Safety instructions for assembly.................... 6
2.4 Safety instructions for installation .................. 6
2.5 Safety instructions for operation.................... 6
2.6 Safety instructions for maintenance............... 7
2.7 Safety instructions on shutting down............. 7
2.8 Operating and technical staff......................... 7
2.9 Personal protective equipment...................... 7
2.10 RoHS Compliance ........................................ 7
2.11 IT safety instructions ..................................... 7
2.11.1 Measures for products and systems ..................... 7
3 Device description ............................ 9
3.1 General functional description....................... 9
3.2 Control modes............................................ 10
3.2.1 General information ............................................ 10
3.2.2 Automatic mode ................................................. 10
3.2.3 Delta-T mode ..................................................... 11
3.2.4 External temperature sensor ............................... 11
3.3 Ambient conditions ..................................... 11
3.4 Air routing ................................................... 14
3.4.1 General .............................................................. 14
3.4.2 LCP Rack ........................................................... 14
3.4.3 LCP Inline Protruding and LCP Inline Flush ......... 15
3.5 Equipment assembly................................... 16
3.5.1 Schematic design ............................................... 16
3.5.2 Unit components ................................................ 16
3.5.3 Air/water heat exchanger .................................... 17
3.5.4 Fan module ........................................................ 18
3.5.5 Water module with cold water connection .......... 18
3.6 Proper and improper usage ........................ 18
3.7 Supply scope of a Liquid Cooling Package . 19
3.8 Unit-specific instructions ............................. 19
3.8.1 Creation of redundancy in the LCP Rack ............ 19
3.8.2 Dewpoint control ................................................ 21
3.9 Type code .................................................. 21
3.9.1 Meaning of the digits in the type code ................ 21
3.9.2 Standard versions .............................................. 22
4 Transportation and handling ........... 23
4.1 Transportation ............................................ 23
4.2 Unpacking .................................................. 23
5 Assembly and siting ........................ 26
5.1 General ...................................................... 26
5.1.1 Installation site requirements ............................... 26
5.1.2 Prepare the room for installation of the LCP Inline
Protruding and LCP Inline Flush .......................... 26
5.1.3 Installation regulations for the LCP Inline Protruding
and LCP Inline Flush ........................................... 27
5.2 Assembly procedure with a VX IT server
enclosure ................................................... 28
5.2.1 General .............................................................. 28
5.2.2 Dismantle the side panels ................................... 28
5.2.3 Seal the server enclosure ................................... 28
5.2.4 Fit the rear adaptor on the LCP Inline ................. 29
5.2.5 Installation and baying of the Liquid Cooling
Package ............................................................. 31
5.2.6 Mounting the side panel ..................................... 33
5.2.7 Punch outs ......................................................... 34
5.3 Fan installation ........................................... 34
5.3.1 Removing a fan module ...................................... 34
5.3.2 Installing a fan module ........................................ 35
5.4 Install the optional display (SK 3311.030) ... 37
5.5 Installing the optional condensate pump
(SK 3314.012) ............................................ 38
5.6 Positioning the pressure sensors................ 41
6 Installation ...................................... 42
6.1 Connecting the Liquid Cooling Package..... 42
6.1.1 Electrical connection .......................................... 42
6.1.2 Potential equalisation .......................................... 46
6.1.3 Cooling water connection ................................... 46
6.1.4 Connecting the condensate discharge ............... 49
6.1.5 Bleeding the air from the heat exchanger ............ 50
6.2 Cooling operation and control
characteristics ............................................ 50
7 Configuration .................................. 51
7.1 General ...................................................... 51
7.2 HTTP connection ....................................... 51
7.2.1 Making the connection ....................................... 51
7.2.2 Changing the network settings ........................... 51
7.2.3 Changing the measurement units ....................... 52
7.2.4 LCP configuration ............................................... 52
7.2.5 Settings .............................................................. 56
8 Operation ....................................... 57
8.1 Description of operating and display
components ............................................... 57
8.1.1 Control unit hardware for the Liquid Cooling
Package ............................................................. 57
8.2 Description of operation ............................. 58
8.2.1 General .............................................................. 58
8.2.2 Acknowledging messages .................................. 59
8.2.3 Operation in stand-alone mode .......................... 59
8.2.4 Automatic door opening, LCP Rack ................... 62
8.3 Extended options by connecting the Liquid
Cooling Package to a network ................... 64
8.4 General operation ...................................... 64
8.4.1 Layout of screen pages ...................................... 64
8.4.2 Navigation area in left-hand section .................... 64

Contents
4Rittal Liquid Cooling Package
8.4.3 Index tabs in the configuration area ..................... 65
8.4.4 Message display ................................................. 65
8.4.5 Other displays ..................................................... 66
8.4.6 Changing parameter values ................................. 66
8.4.7 Logging off and changing the password ............. 67
8.4.8 Reorganising the connected components ........... 68
8.5 Monitoring index tab .................................. 68
8.5.1 Device ................................................................. 69
8.5.2 Air Temperature .................................................. 69
8.5.3 Fans .................................................................... 70
8.5.4 Coolant ............................................................... 70
8.5.5 Valve ................................................................... 71
8.5.6 Cooling Capacity ................................................. 72
8.5.7 Leakage Sensor .................................................. 72
8.5.8 Condensate ........................................................ 72
8.5.9 Setup .................................................................. 73
8.5.10 Operating Data ................................................... 73
8.5.11 Remote ............................................................... 73
8.5.12 Features .............................................................. 74
8.6 Configuration index tab .............................. 77
8.7 Door Opening ............................................ 77
8.8 Tasks......................................................... 78
9 Updates and data backup .............. 80
10 Troubleshooting ............................. 81
10.1 General faults............................................. 81
10.2 Messages on the display............................ 83
11 Inspection and maintenance ........... 84
12 Storage and disposal ...................... 85
13 Technical specifications .................. 86
13.1 Output class 30 kW ................................... 86
13.1.1 LCP Rack Flush CW and LCP Inline Protruding
CW (CW = Chilled Water) .................................... 86
13.1.2 LCP Inline Flush CW (CW = Chilled Water) .......... 86
13.2 Output class 35 kW ................................... 87
13.2.1 LCP Inline Flush CWG (CWG = Chilled Water
Glycol) ................................................................. 87
13.3 Output class 44 kW ................................... 87
13.3.1 LCP Rack Flush CWG and LCP Inline Protruding
CWG (CWG = Chilled Water Glycol) .................... 87
13.4 Output class 53 kW ................................... 88
13.4.1 LCP Rack Flush CW and LCP Inline Protruding
CW (CW = Chilled Water) .................................... 88
14 Spare parts .................................... 89
15 Accessories .................................... 90
16 Further technical information .......... 92
16.1 Information concerning the filling and
additive water ............................................ 92
16.2 Characteristic curves.................................. 93
16.2.1 Pressure loss ...................................................... 98
16.3 Overview drawings................................... 100
16.4 Circuit diagram......................................... 106
16.5 Wiring diagram......................................... 119
16.6 Water circulation diagram......................... 120
16.7 Declaration of Conformity......................... 121
17 Preparation and maintenance of
the cooling medium ..................... 122
18 Frequently Asked Questions (FAQ) 123
19 Glossary ...................................... 130
20 Customer service addresses ........ 131

Rittal Liquid Cooling Package 5
1 Notes on documentation
1
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/EU. A cor-
responding declaration of conformity has been issued,
you can find it in section16.7 "Declaration of Conform-
ity". These are the original operating instructions.
The cooling unit bears the following mark.
1.2 Storing the documents
The assembly and operating instructions as well as all
applicable documents are integral components of the
product. They must be handed out to those persons
who are engaged with the unit and must always be avail-
able and on hand for operating and maintenance per-
sonnel.
1.3 Symbols in these operating instructions
The following symbols are found in this documentation:
This symbol indicates an "Action Point" and shows
that you should carry out an operation/procedure.
1.4 Other applicable documents
In conjunction with these assembly and operating in-
structions, the superordinate system documentation (if
available) also applies.
Rittal GmbH & Co. KG is not responsible for any damage
which may result from failure to comply with these as-
sembly and operating instructions. The same applies to
failure to comply with the valid documentation for acces-
sories used.
1.5 Normative instructions
1.5.1 Legal information concerning the operating
instructions
We reserve the right to make changes in content. Rittal
GmbH & Co. KG will not be held liable for any mistakes
in this documentation. Liability for indirect damages
which occur through the delivery or use of this docu-
mentation is excluded to the extent allowable by law.
1.5.2 Copyright
The distribution and duplication of this document and
the disclosure and use of its contents are prohibited un-
less expressly authorised.
Offenders will be liable for damages. All rights created by
a patent grant or registration of a utility model or design
are reserved.
1.6 Software update
These instructions apply to software version V3.17.00.
This documentation shows the English screenshots.
The descriptions of individual parameters on the Liquid
Cooling Package website also use the English terminol-
ogy. Depending on the set language, the displays on the
Liquid Cooling Package website may be different (see
assembly and operating instructions for the IoT Interface
3124.300).
Danger!
Hazardous situation which causes 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:
Information concerning individual proce-
dures, explanations, or tips for simplified ap-
proaches. Also indicates situations which
may result in material damage.

6Rittal Liquid Cooling Package
2 Safety instructions
2
2 Safety instructions
The Liquid Cooling Packages produced by Rittal GmbH
& Co. KG are developed and produced with due regard
to all safety precautions. Nevertheless, the unit still caus-
es a number of unavoidable dangers and risks. The
safety instructions provide you with an overview of these
dangers and the necessary safety precautions.
In the interest of your safety and the safety of others,
please read these safety instructions carefully before as-
sembly and commissioning of the Liquid Cooling
Package.
Follow the user information found in these instructions
and on the unit carefully.
2.1 General safety instructions
Please observe the following general safety instructions.
Always wear the required personal protective equip-
ment when working on this device (see section2.9
"Personal protective equipment").
Please do not make any changes to the LCP that are
not described in these operating instructions or other
applicable assembly and operating instructions.
The LCP should only be combined and operated with
the prescribed Rittal system accessories.
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.
2.2 Safety instructions for transportation
– There is a risk of injury from falling loads. Do not stand
under suspended loads when transporting the unit
with a hoist trolley, a forklift, or a crane.
– There is a risk of injury due to the device tipping over
once the fastening screws on the pallet have been
loosened. Wear personal protective equipment (PPE)!
– There is a risk of injury when cutting through the pre-
tensioned tightening straps. Wear personal protective
equipment (PPE)!
There is a risk of injury due to the heavy weight of the
device. Please observe the maximum permissible
weight to be lifted by one person. Use suitable lifting
devices, if needed.
2.3 Safety instructions for assembly
– Have the devices installed by qualified specialists
trained by Rittal.
– There is a risk of injury from the device tipping over.
The LCP can tip over when it is in the upright position
if it is not connected to a server rack. Have a second
person secure the unit in an upright position.
– There is a risk of injury if the device is mounted on a
base/plinth or if the levelling feet are adjusted. Wear
personal protective equipment (PPE)!
– There is a risk of people becoming jammed between
the server rack and the LCP during installation. Make
sure that no person's limbs are in the danger area
when the enclosures are bayed. Wear personal pro-
tective equipment (PPE)!
– There is a risk of injury from the baying connectors
when the components are being screwed together.
Wear personal protective equipment (PPE)!
2.4 Safety instructions for installation
– There is a risk of crushing when the containment sys-
tem is inserted into the server enclosure. Wear per-
sonal protective equipment (PPE)!
– There is a risk of becoming trapped and cut when
screwing on and sealing the coolant lines. Wear per-
sonal protective equipment (PPE)!
– Following installation, ensure that the coolant lines do
not restrict the flow of air through the device.
– There is a danger of electric shock when installing the
condensate pump! Before starting work, completely
switch off the LCP at the main switch and prevent it
from being switched on again inadvertently.
– When installing the condensate pump, there is the risk
of injury caused by sharp edges inside the LCP. Wear
personal protective equipment (PPE)!
– Ensure that all the hoses are correctly installed to pre-
vent unwanted water from entering the device when
installing the condensate pump.
– When installing the display, there is a risk of injury from
sharp edges inside the LCP. Wear personal protective
equipment (PPE)!
– There is a danger of electric shock when installing fan
modules! Before starting work, switch off the electron-
ic module assigned to the fan.
– When installing fan modules, there is a risk of injury
from sharp edges inside the LCP. Wear personal pro-
tective equipment (PPE)!
– Work on electrical systems or equipment may only be
carried out by an electrician or by trained personnel
guided and supervised by an electrician. All work must
be carried out in accordance with electrical engineer-
ing regulations.
– Use only insulated tools. Wear personal protective
equipment.
– The voltage values shown in the wiring plan or on the
rating plate must match the mains voltage.
– Incorrect assembly and installation may lead to the risk
of condensation forming in the device, which can lead
to an electrical short circuit or to leaks of liquid.
2.5 Safety instructions for operation
– Risk of malfunction or damage! Do not modify the unit!
Use only original spare parts!
– There may be an increased noise level when the LCP
is in operation, especially when the device is operated
directly on the display. Wear personal protective
equipment (PPE)!
– Proper and flawless unit operation can only be en-
sured when it is operated under the intended ambient
conditions. As far as possible, be sure that the ambi-

Rittal Liquid Cooling Package 7
2 Safety instructions
2
ent conditions for which the unit is designed are com-
plied with, e.g. temperature, humidity, air purity.
– The medium necessary for the control system, i.e.
cooling water, must be available throughout the entire
operating time.
– If leaks occur, there is the risk of injury caused by es-
caping refrigerant, in particular glycol. Wear personal
protective equipment, collect any escaped refrigerant
with suitable cloths or absorbent materials, and rectify
the leakage cause without delay.
– Injury caused by fan impellors! Keep persons and ob-
jects away from the fan impellors! Do not remove cov-
ers until the power supply is disconnected and impel-
lors are not moving! Always use mechanical protection
when working! Shut down the respective fan during
maintenance work, if possible! Tie long hair back! Do
not wear loose clothing! Fans start up automatically
following power disruptions!
2.6 Safety instructions for maintenance
– Danger of cut injuries, especially from the sharp edges
of the heat exchanger! Put on personal protective
equipment before beginning assembly or cleaning
work!
– When removing and installing a fan, there is the risk of
injury caused by sharp edges inside the LCP, high air
speeds and noise. Wear personal protective equip-
ment (PPE)!
– Always read the relevant safety data sheet when work-
ing with the cooling medium.
2.7 Safety instructions on shutting down
– During storage and transportation below freezing
point, the water circuit should be drained completely
using compressed air!
2.8 Operating and technical staff
The installation, commissioning, maintenance and repair
of this unit may be performed only by qualified special-
ists trained by Rittal.
Only properly instructed personnel may perform service
on a unit while in operation.
2.9 Personal protective equipment
Personal protective equipment, which should as a mini-
mum include waterproof protective gloves and safety
goggles, must be worn during any work on the unit
when personnel might come into contact with refrigerant
(for deployment of a water-glycol mixture).
Personal protective equipment (PPE) must be worn, es-
pecially during assembly, installation and maintenance
of the device. This PPE must – as a minimum – consist
of cut-resistant gloves and safety shoes.
We also recommend the wearing of suitable ear muffs
and a hair net when working near the unit.
For all work on the LCP, in particular on the outlet side,
wearing safety goggles is recommended to prevent eye
injuries caused by the high air speeds.
2.10 RoHS Compliance
The LCP fulfils the requirements of EU directive 2011/
65/EC on the Restriction of Use of Certain Hazardous
Substances in Electrical and Electronic Equipment
(RoHS 2) of 08 June, 2011.
Safety notice according to Regulation (EC) No.
1907/2006
The product contains the following SVHC substances:
According to the manufacturer, there are no health risks
if the product is used properly.
After use, the product must be properly disposed of in
accordance with the applicable legal regulations.
2.11 IT safety instructions
To ensure the availability, confidentiality and integrity of
data, products, networks and systems must be protect-
ed against unauthorised access.
Such protection can be achieved only with organisation-
al and technical measures. To satisfy the increased safe-
ty requirements, Rittal recommends the observance of
the following measures. Furthermore, more detailed in-
formation can be found on the websites of Bundesamt
für Sicherheit in der Informationstechnik (Federal Office
for IT Security – BSI).
2.11.1 Measures for products and systems
Embed products and systems not in public net-
works
Make sure that the system is only operated in protect-
ed networks.
Note:
Corresponding information concerning the
RoHS directive is provided by our firm on the
Internet at www.rittal.com/RoHS.
SVHC substance CAS No.
4,4'-isopropylidene diphenol 80-05-7
Lead 7439-92-1
Cadmium 7440-43-9
Mercury 7439-97-6
Lead titanium trioxide 12060-00-3
Lead monoxide (lead oxide) 1317-36-8
Diboron trioxide 1303-86-2
Tab. 1: SVHC substance

8Rittal Liquid Cooling Package
2 Safety instructions
2
Configure the firewall
To protect your networks, and the embedded prod-
ucts and systems against external effects, configure a
firewall.
Also deploy a firewall for segmentation of a network or
to isolate a controller.
Consider defence-in-depth mechanisms during
the planning phase
Consider defence-in-depth mechanisms for your sys-
tem planning.
Defence-in-depth mechanisms cover several levels of
mutually coordinated security measures.
Restrict access authorisations
Restrict access authorisations to networks and sys-
tems to only persons that need an authorisation.
Protect accesses
Do not use the default passwords; instead, use se-
cure, long passwords containing numbers, a mix of
upper case and lower case letters, symbols and no
repetitions.
Create random passwords with a password manager.
Deploy the current firmware version
Ensure that the current Rittal firmware is deployed on
all devices.
The firmware can be downloaded from the associated
product pages in the Internet.
Observe the associated Release Notes for new firm-
ware versions.
Deploy current security software
To identify and eliminate security threats, such as vi-
ruses, trojans and other malicious software, security
software should be installed on all PCs and kept up-
to-date.
Deploy whitelist tools to monitor the device context.
Deploy an intrusion-detection system to validate the
communication of your system.
Perform regular threat analyses
Rittal recommends that you perform regular threat
analyses.
The threat analyses allow you to determine whether
your adopted measures are effective.
Protect USB ports against access
USB ports must be protected against physical access.
Ensure that no unauthorised persons have access to
USB ports.
Sensitive data can be read for an unauthorised access
to USB ports.

Rittal Liquid Cooling Package 9
3 Device description
3
3 Device description
3.1 General functional description
The Liquid Cooling Package is essentially an air/water
heat exchanger that is used to dissipate high heat losses
from server enclosures or for the effective cooling of de-
vices built into a server enclosure.
The air routing in the Liquid Cooling Package supports
the "front to back" cooling principle of the devices built
into the server enclosure. The hot air expelled by the de-
vices in the server enclosure is drawn in by the fans at
the rear directly from the server enclosure (LCP Rack) or
from the hot aisle (LCP Inline Protruding and LCP Inline
flush) and thus routed through the heat exchanger mod-
ule.
In the heat exchanger module, the heated air is directed
through an air/water heat exchanger, and its thermal en-
ergy (heat losses from the server) is transferred to a cold
water system. As a result, the air is cooled to a freely se-
lectable temperature within the authorised parameters
and then routed directly in front of the 482.6 mm (19")
level in the server enclosure (LCP Rack) or into the cold
aisle (LCP Inline Protruding and LCP Inline Flush).
A different heat exchanger is installed in the CWG (CWG
= Chilled Water Glycol) units than in the CW (CW =
Chilled Water) units. This heat exchanger is specially de-
signed for operation with the water-glycol mixture (Anti-
frogen-N) and for the lower specific heat capacity of the
mixture compared with pure water so that a high cooling
capacity is also achieved. The heat exchangers of the
CWG units must be constructed so they produce rela-
tively high water return temperatures (large Delta-T) and
so allow the efficient deployment of a downstream heat
pump. As standard, the CWG units are only equipped
with an impact surface spray eliminator.
In its delivered state, the LCP Inline expels the cold air on
both sides. By fitting a side panel or partition, this can be
restricted to one side only.
Fig. 1: Air routing on the LCP Rack – top view
Key
1 Air inlet
2 Heat exchanger
3Airoutlet
4Fanmodule
Fig. 2: Air routing on the LCP Inline Protruding – top view
Key
1 Air inlet
2 Heat exchanger
3Airoutlet
4Fanmodule
2
11
33
4
2
1
33
4

10 Rittal Liquid Cooling Package
3 Device description
3
Fig. 3: Air routing on the LCP Inline Flush – top view
Key
1 Air inlet
2 Heat exchanger
3Airoutlet
4Fanmodule
Any condensate resulting in CWG units is collected in
the base tray integrated in the water module of the
Liquid Cooling Package, and from there it is routed out-
side via a condensate water discharge hose.
3.2 Control modes
3.2.1 General information
The Liquid Cooling Package can be operated in various
control modes depending on the deployment condition:
– Automatic mode: The server inlet temperature (cold
air) serves as a reference variable. The water flow and
the fan speed are controlled to provide the required
cooling capacity.
– Delta-T mode: The setpoint temperature of the water
return serves as reference variable. The server inlet
temperature (cold air) can vary within the specified,
settable limits.
– Manual control: The water flow and the fan speed are
specified manually. The set parameters serve as refer-
ence variables.
– Remote operation: The water flow and the fan speed
are specified by an external software system. The ex-
ternal parameter changes serve as reference varia-
bles.
– Dew point control: In this mode, the pre-installed tem-
perature/humidity sensor monitors the temperature to
humidity ratio. If the dew point is undershot, the fan
speed is increased for a specified time.
3.2.2 Automatic mode
The temperature of the cold air intake is controlled via
constant comparison of the actual temperature with the
setpoint temperature set on the Liquid Cooling Package
(default is +24 °C).
If the server-in temperature exceeds the setpoint tem-
perature, the control valve in the cooling water system
opens (linear opening from 0 – 100%), and the heat ex-
changer is supplied with cold water.
Fig. 4: Opening degree of the control valve
If the difference "server inlet temperature – setpoint
value"
– is less than 0: the control valve is further closed.
– is greater than 0: the control valve is further opened.
– is equal to 0: the control valve retains its opening
degree.
The temperature differential between the setpoint and
the warm air that is drawn is used to determine and set
the fan speed. The control unit attempts to keep the air
Note:
The water inlet temperature for the CW units
must always be chosen (controlled) so that it
always lies above the dew point for the pre-
vailing ambient temperature and humidity in
the data centre. The dew point can be found
in the Mollier h-x diagram (fig. 6).
Furthermore, we advise compliance with the
ASHRAE standard "ASHRAE TC 9.9, 2011
Thermal Guidelines for Data Processing Envi-
ronments".
2
1
3
4
Note:
Rittal cannot accept any liability for damage
and consequential damage caused by im-
proper parameter settings.
Note:
The dew point control may be activated only
for units with integrated impact surface spray
eliminator (CWG units, possibly customer-
specific units).
100%
19%
0º 90º
Water flow
Opening degree

Rittal Liquid Cooling Package 11
3 Device description
3
temperature constant in front of the 482.6 mm (19") level
(LCP Rack) or in the cold aisle (LCP Inline Protruding
and Inline Flush) by activating the control valve.
Fig. 5: Fan control
– The lower limit of the Delta-T value can be set in the
range between 0 K…20 K.
– The upper limit of the Delta-T value can be set in the
range between 3 K…40 K.
– The lower speed value can be set in the range be-
tween the minimum speed and 80% of the maximum
speed.
Optional: Fan speed control according to the pres-
sure difference
If the fan speed is controlled according to the pressure
difference, the pressure in front of and behind the server
rack's built-in devices is ascertained and compared with
the set pressure difference to calculate the fan speed.
3.2.3 Delta-T mode
In Delta-T mode, the water return temperature is con-
trolled to the preset setpoint.
This is done by varying the water quantity and changing
the inlet air temperature (cold air) within the set limits.
If control within the set values is not possible, the unit
switches to controlling the inlet air temperature (see sec-
tion3.2.2 "Automatic mode").
3.2.4 External temperature sensor
The virtual device "LCP Temperature Controller" is used
to transmit an external temperature value to the LCP CW
VX. This value overwrites the input variable for the valve
in automatic mode.
Procedure
Install an external sensor, such as 7030.110, in the
cold aisle and connect to the climate controller. The
valve control should be set to "Automatic".
Create a virtual device.
Select the temperature sensor.
Confirm the device message, e.g. using the "SET" key.
The value measured by the external temperature sen-
sor is used as the input variable for the valve.
3.3 Ambient conditions
The Liquid Cooling Package is used to dissipate the
thermal load generated by IT equipment and prevent the
installation site of the IT equipment from overheating. If
IT systems are operated at excessive ambient tempera-
tures, this may lead to malfunctions and restricted oper-
ation of the system. The correct system temperature is
based on manufacturer-specific information. The Liquid
Cooling Packages only dissipate the thermal loads from
the IT equipment, but not the thermal loads produced by
lighting and other heat sources; these must be dissipat-
ed by other air-conditioning systems. In data centres,
the air-conditioning systems are responsible for air qual-
ity. Where defined requirements apply to relative humid-
ity at the installation site for the operation of IT equip-
ment, the most efficient way of achieving this is via the
air-conditioning system.
Depending on the ambient conditions, generally speak-
ing it is advisable to regulate the intake air supplied to the
data centre via an air-conditioning system. This prevents
the formation of condensation on the heat exchanger
due to an excessively hot or damp air supply to the data
centre. If it is imperative to work with inlet temperatures
below the dew point, the fresh air supply must likewise
be regulated via an air-conditioning system.
If there is a central air-conditioning system for basic cli-
mate control installed in the data centre, when planning
an LCP cooling system to dissipate the thermal loads,
the following information must be available:
– Relative humidity of the room air (intake air) in %
– Room air temperature (intake air temperature) in °C
– Cold water system temperature (where available)
Based on the prescribed conditions, please use the
Mollier h-x diagram to check whether cooling at the pre-
scribed cold water temperature will fall below the dew
point (fig. 6 "Mollier h-x diagram for humid air").
Note:
The inner construction of the regulating ball
valve means the actual opening point lies at
19%.
100%
80%
15 K 20
K
5 K
Fan speed
Minimum
speed
Note:
In the LCP, active control is displayed in the
visualisation and in the device tree.
Note:
ASHRAE (American Society of Heating, Re-
frigerating and Air-Conditioning Engineers)
recommends server intake air temperatures
of between 18 °C and 27 °C. The selected
server intake air temperature should be
agreed with the manufacturer of the IT equip-
ment and the operator at the project planning
stage.

12 Rittal Liquid Cooling Package
3 Device description
3
The blue markings in the Mollier h-x diagram give an ex-
ample of how to calculate the dew point for the following
conditions:
– Room temperature: 22 °C
– Relative humidity: 50%
This produces a dew point of 11 °C.
Sensitive and latent cooling output
If the surface temperature of the heat exchanger in the
Liquid Cooling Package is below the dew point, conden-
sation will form on the heat exchanger. This leads to
cooling capacity losses, because the energy is some-
times used for condensation (latent cooling capacity).
If, however, when working with cold water temperatures
where the surface temperature of the heat exchanger is
above the dew point, the energy is used only to cool the
server supply air (sensitive cooling capacity).
Section 6.1.3 "Cooling water connection" describes a
tried-and-tested hydraulic circuit which quickly and eas-
ily supplies the required volume of water at the correct
temperature.
Note:
To obtain support, contact Rittal.

Rittal Liquid Cooling Package 13
3 Device description
3
Fig. 6: Mollier h-x diagram for humid air
1.25 kg/m3
1.20 kg/m3
1.15 kg/m3
1.10 kg/m3
1.05 kg/m3
0 kJ/kg
20 kJ/kg
40 kJ/kg
60 kJ/kg
Enthalpy
100%
50%
90%
80%
70%
60%
40%
30%20%15%10%5%
Rel. Humidity
0 g/kg 2 g/kg 4 g/kg 6 g/kg 8 g/kg 10 g/kg 12 g/kg 14 g/kg 16 g/kg 18 g/kg 20 g/kg
Water
-15º
-10º
-5º
0º
5º
10º
15º
20º
25º
30º
35º
40º
Temperature
Mollier h-x diagram for humid air – pressure 0.950 bar (537.000 m / 10.000ºC / 80.000% rF)
22º
11º
Dew point curve

14 Rittal Liquid Cooling Package
3 Device description
3
3.4 Air routing
3.4.1 General
In order to achieve sufficient cooling in the server enclo-
sure, it is important to ensure that the cooling air passes
through the interior of the built-in units and is unable to
flow past at the sides.
Targeted air routing in the server enclosure has a major
effect on the heat loss to be dissipated.
In order to ensure targeted air routing in the system, the
server enclosure should be divided vertically into warm
air and cold air sections. The division is accomplished in
the front section of the server assembly to the left and
right of the 482.6 mm (19") level using foam strips or air
baffle plates which, depending on the enclosure width
and the number of server enclosures to be cooled, can
be ordered as an accessory (see section 15 "Accesso-
ries").
If devices which require sideways air throughput are built
into the server enclosure (e.g. switches, router, etc.),
these may be cooled through targeted placement of the
foam strips or air baffle plates.
3.4.2 LCP Rack
The LCP Rack may be bayed on the right or left of a
server enclosure, according to preference.
Fig. 7: LCP Rack on a server enclosure
The LCP Rack may also be bayed between two server
enclosures.
Fig. 8: LCP Rack on two server enclosures
Together with the bayed server enclosure, the LCP Rack
forms an airtight cooling system with horizontal air rout-
ing. Depending on the ambient conditions, the surfaces
Note:
The 482.6 mm (19") level must likewise be
completely sealed. This is already the case in
a fully equipped server enclosure. If the serv-
er enclosure is partially equipped, the open
height units (U) of the 482.6 mm (19") level
must be sealed with blanking plates, which
are available from Rittal Accessories (see
section 15 "Accessories").
As more devices are installed in the server
enclosure, it becomes even more important
to follow this specification.

Rittal Liquid Cooling Package 15
3 Device description
3
of the housing dissipate up to approx. 5% of the com-
plete heat energy to the environment. This cannot be
avoided for physical reasons.
Fig. 9: Air routing with a bayed server enclosure – top view
Key
1 LCP Rack
2 Server enclosure
Fig. 10: Air routing with two bayed server enclosures – top view
Key
1 Server enclosure
2 LCP Rack
The system consisting of the LCP Rack and the server
enclosure should be sealed as effectively as possible in
order to prevent the loss of cooling air. To accomplish
this, the enclosure is equipped with side panels, roof and
gland plates. Any existing cable entries should be sealed
e.g. using suitable brush strips.
Whilst the system is in operation, both the front and the
rear doors should be kept completely shut.
3.4.3 LCP Inline Protruding and LCP Inline Flush
Targeted air routing by hot air extraction from the hot
aisle and cold air blown into the cold aisle has a funda-
mental effect on the amount of heat to be dissipated.
In order to achieve sufficient cooling in the server enclo-
sure, it is important to ensure that the cooling air passes
through the interior of the built-in units and is unable to
flow past at the sides.
Fig. 11: Air routing with bayed server enclosures – top view
Key
1 LCP Inline Protruding
2 Server enclosure
3 LCP Inline Flush
For this purpose, the system consisting of LCP Inline
Protruding or LCP Inline Flush, server enclosure and
cold aisle containment should be sealed as effectively as
possible in order to avoid a decrease in cooling capacity
due to mixing of cold and hot air. This is achieved by
sealing the cold aisle with doors at the beginning and
end of the rack rows, and sealed against the ceiling with
roof elements. Existing cable entry glands are addition-
ally sealed e.g. with suitable brush strips.
21
IT rack
211
IT rack IT rack
Note:
However, the system does not need to be
completely airtight, thanks to the high, coor-
dinated volumetric airflows of the server and
LCP fans.
IT rack IT rack IT rack IT rack
232212

16 Rittal Liquid Cooling Package
3 Device description
3
3.5 Equipment assembly
3.5.1 Schematic design
The schematic design is illustrated below:
Fig. 12: Schematic design of a Liquid Cooling Package – right-
hand side view
Key
1 Cooling water return (option "top")
2 Cooling water inlet (option "top")
3 Electronic module with climate controller
4 CMC III differential pressure sensor (optional)
5 NTC sensors – server inlet temperature (3x)
6 Impact surface spray eliminator (for CWG units and cus-
tomer-specific variants)
7Fanmodule
8 Leakage sensor
9 Leakage sensor (condensate pump, optional)
10 Base tray
11 Condensate drain
12 Emergency condensate drain
13 Cooling water inlet (option "bottom")
14 Cooling water return (option "bottom")
15 NTC sensor – cooling medium inlet
16 NTC sensor – cooling medium return
17 Volume flow measurement unit
18 Control valve
19 Non-return valve
20 Condensate pump (optional)
21 CMC III temperature/humidity sensor (for CWG units and
customer-specific variants)
22 Heat exchanger
23 NTC sensors – server outlet temperature (3x)
A Liquid Cooling Package consists of an electronic mod-
ule with the climate controller, a water module, a heat
exchanger, and the fan modules. In its supplied state,
the following fan modules are built into the devices:
The fan modules and the water module are also regulat-
ed by the climate controller.
3.5.2 Unit components
Fig. 13: Liquid Cooling Package front – open front door
Key
1-6 Fans 1 to 6 (in this instance, fully equipped with 6 fans)
7 LCP door
8 Optional display with touch function (rear)
9 VX frame
10 Electronic module with climate controller
The fans are numbered continuously from top to bottom
in the unit (for fully-equipped LCP Rack and LCP Inline
Protruding units, from 1 to 6; for fully-equipped LCP In-
line Flush unit, from 1 to 4). This permits a simple assign-
ment to the associated switch in the electronic module.
The electronic module is comprised of the following
components:
– Three On/Off switches for fan pairs 1/2, 3/4 and 5/6
12
12
11
3
7
6
5
10 9 8
4
14
13
20
19
18
17
16
15
22
23
21
Device/cooling
output
30 kW 53 kW 44 kW
(CWG)
LCP Rack 1 module 4 modules 4 modules
LCP Inline
Protruding
1 module 4 modules 4 modules
LCP Inline Flush 2 modules – 2 modules
Tab. 2: No. of fan modules in supplied state
7
8
10
2
3
4
5
9
1
6

Rittal Liquid Cooling Package 17
3 Device description
3
– AC/DC power pack for climate controller
– EMC protective organs
Fig. 14: Electronic module
Key
1 On/Off switch fan pair 1/2
2 On/Off switch fan pair 3/4
3 On/Off switch fan pair 5/6
Fig. 15: LCP Inline rear – rear door open
Key
1LCPreardoor
2 Base tray with condensate discharge
3 Control valve
4 Water connection, inlet G1½" external thread
5 Water connection, outlet G1½" external thread
6 Air/water heat exchanger
7Ventvalve
8 Mains connection, network connection and connection
of optional condensate pump
The Liquid Cooling Package consists of a solid welded
frame in which the heat exchanger, fan modules, and
the water module are installed.
One wide and one narrow wall plate are mounted on
both the left and right sides.
The wall plates have been punched with air outlet open-
ings along their entire height in the front section to en-
sure cold air supply to the server (LCP Rack) or to the
cold aisle (LCP Inline).
In the LCP Rack, the wall plates in the rear section have
been punched with air inlet openings along their entire
height and width to ensure the dissipation of warm air
from the server.
Seven shelves (or in the case of the LCP Inline Flush, five
shelves) are positioned between these wall plates that
divide the front of the Liquid Cooling Package into sev-
eral compartments of differing heights. The electronic
module sits on the top shelf. The compartments for the
fans are below this. All components of the cooling water
supply and condensate management are integrated into
the water module on the floor of the Liquid Cooling
Package.
The front and rear of the Liquid Cooling Package are
each closed with a door with 4-point locking.
In the LCP Rack these doors seal the unit. In the LCP
Inline Protruding and LCP Inline Flush, the rear door is
perforated to ensure the dissipation of hot air from the
hot aisle. In the LCP Inline Flush, the front door is addi-
tionally perforated to ensure the supply of cooling air into
the cold aisle.
The optional display with touch function for operation in
stand-alone mode is located on the front.
3.5.3 Air/water heat exchanger
The air/water heat exchanger is installed in the centre
section of the Liquid Cooling Package between the two
wall plates. In the CWG units (3314.250/550/570), the
heat exchanger is covered with a spray eliminator on the
air outlet side that catches any condensate and directs
it to the base tray at the bottom of the Liquid Cooling
Package.
123
1
8
6
2
7
4
3
5
Note:
In principle, the rear of the LCP Rack looks
exactly the same as the LCP Inline. However,
it is closed with a non-perforated door.

18 Rittal Liquid Cooling Package
3 Device description
3
Three temperature sensors that determine the cold and
hot temperatures are located before and after the heat
exchanger and forward them to the closed-loop control.
3.5.4 Fan module
Fig. 16: Fan module in fan tray
Key
1Fan
2 Connector DC
3 Earth connection
4 Connector AC
5 Fan door
6Handle
A fan module is essentially comprised of the fan itself. All
fan modules are controlled by a shared control unit
(RLCP fan) which is mounted in the upper section of the
Liquid Cooling Package. The fans may be operated with
linear control from 0%–100%.
The fan modules are installed on rack-mounted shelves
in the front section of the Liquid Cooling Package.
The two connection cables for the power supply and pi-
lot wire are routed out of the underside of the fan. For all
LCP CW and LCP CWG units, the intake end of the fan
module lies against a sealing section mounted on the left
and right of the housing, which forms an effective seal.
This means that in the installed state, the fans are con-
nected directly to the unit's air/water heat exchanger,
enabling the air from the air/water heat exchanger to be
routed directly and without interruption to the fan mod-
ule.
It takes about 2 minutes to replace a fan module during
operation (see section 5.3 "Fan installation").
3.5.5 Water module with cold water connection
A significant component of the water module is the
stainless-steel base tray in which a leak sensor, a water
discharge and an emergency overflow are located.
In addition to the leak sensor, the base tray is also
equipped with a pressureless condensate discharge.
This directs the condensate out of the Liquid Cooling
Package to the rear. The hose must be connected to an
external discharge (see section 6.1.4 "Connecting the
condensate discharge").
The pipework for the Liquid Cooling Package's cooling
water connection (inlet and return) runs above the base
tray.
The lines connect the rear-mounted cooling water con-
nection with the air/water heat exchanger built into the
middle of the device. The lines are insulated to avoid the
formation of condensation. A motorised control valve is
located in the cooling water inlet line to control the cool-
ing water flow.
The cooling water connection is connected to the main
inlet and return connections by two G1½" externally
threaded pipes for flange gaskets. The connection noz-
zles are positioned horizontally, inclined to the rear.
The cooling water connection to the cold water network
can be made by either rigid pipework or flexible hoses,
which are available from the Rittal accessory range
(Model No. 3311.040).
3.6 Proper and improper usage
The Liquid Cooling Package is an air/water heat ex-
changer that cools closed spaces or housings in which
IT components, such as servers, switches or similar, are
installed and are used in a technology room or data cen-
tre.
LCPs must always be used in conjunction with a cold-
water supply, typically chiller or free-cooler. The water
supply must always be a closed circuit. The water quality
during the complete service life must conform with the
details in these instructions.
The unit may be deployed only within the technical op-
erational limits as described in these instructions.
The unit is state of the art and built according to recog-
nised safety regulations. Nevertheless, improper use
can present a hazard to life and limb of the user or third
parties, or result in possible damage to the system and
other property.
Consequently, the unit must only be used properly and
in a technically sound condition.
Any malfunctions which impair safety should be rectified
immediately. Follow the operating instructions!
Proper use also includes following the operating instruc-
tions and fulfilling the inspection and maintenance con-
ditions.
Inappropriate use may result in danger. Inappropriate
use may include:
– Use of impermissible tools.
– Improper use.
– Improper rectification of malfunctions.
– Use of replacement parts which are not authorised by
Rittal GmbH & Co. KG.
6
5
4
1
2
3

Rittal Liquid Cooling Package 19
3 Device description
3
– Failure to observe the required water quality.
– For the CW units: Use of a coolant other than water.
– Expelling the cold air into an air duct system.
– Use in an industrial environment.
– Non-stationary use, e.g. on moving or vibrating ma-
chines.
– Continuous operation below the dew point (except for
the CWG units with impact surface spray eliminator).
– Operation as air conditioning for humans.
– Operation as food cooling.
– Provision of the units in publicly accessible areas.
– Violation of the permitted electrical voltage ranges.
3.7 Supply scope of a Liquid Cooling
Package
The Liquid Cooling Package supply includes:
3.8 Unit-specific instructions
3.8.1 Creation of redundancy in the LCP Rack
Cooling redundancies are easily achieved via the previ-
ously described baying possibilities. Separation of the
server enclosure from the Liquid Cooling Package
makes it possible to achieve differing levels of redundan-
cy.
Fig. 17: Redundant or double cooling with two LCP Racks
Key
1LCPRack
2 Server enclosure
3 Cold water system inlet
4 Cold water system return
Two server enclosures may be cooled with 3 LCP
Racks. Depending on the cooling output, the device
bayed in the middle, between the server enclosures,
forms the redundancy for the respective left and right
server enclosure.
Qty. Parts
1 Liquid Cooling Package, ready for connection
Accessories:
1Venthose
1 Connector, 5-pole (voltage supply)
1 Connector, 7-pole (fault signal, 2x digital input)
2 Cable ties and spreading anchors (strain relief
for connection cables)
2 Jumper for connector, 5-pole (usage for 1~)
1 Baying fastening kit for VX IT (only for LCP
Inline)
1 Square ventilation key
2 Sealing bungs
1 Foam rubber for 1200 mm deep LCP
1 Foam rubber for 1000 mm deep LCP (not for
LCP Inline Protruding)
1 Assembly and operating instructions
Tab. 3: Supply scope of a Liquid Cooling Package
34
211

20 Rittal Liquid Cooling Package
3 Device description
3
Fig. 18: Redundant cooling with three LCP Racks
Key
1 LCP Rack
2 Server enclosure
3 Cold water system inlet
4 Cold water system return
Fig. 19: Redundant cooling and double alternating water supply
Key
1 LCP Rack
2 Server enclosure
3 Cold water system inlet 1
4 Cold water system return 1
5 Cold water system inlet 2
6 Cold water system return 2
34
21211
5634
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