Vertiv CRV CRD102 User Manual
Displayed below is the user manual for CRV CRD102 by Vertiv which is a product in the Rack Cooling Equipment category. This manual has pages.
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Vertiv | Liebert CRD10 | User Manual 1
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CRD10 User Manual
Original Instructions
Vertiv | Liebert CRD10 | User Manual i
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reserved. No part of this document may be reproduced or transmitted in any form or by any means without the
prior written consent of Vertiv.
Notice
The purchased products, services, and features are stipulated by the contract made between Vertiv and the
customer. All or part of the products, services, and features described in this document may not be within the
purchasing scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and
recommendations in this document are provided “AS IS” without warranties, guarantees or representations of
any kind, either express or implied. The information in this document is subject to change without notice. Every
effort has been made in the preparation of this document to ensure the accuracy of the contents, but all
statements, information, and recommendations in this document do not constitute a warranty of any kind,
express or implied.
Vertiv
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Website: www.vertiv.com;
For Technical Support, users may contact the nearest Vertiv local sales office or service center.
Vertiv | Liebert CRD10 | User Manual ii
Suppliers Declaration of Conformity
Unique Identifier: CRD100-0D00A, CRD101-0D00A, CCD100S-00A.
FCC Compliance Statement (for products subject to Part 15)
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
NOTE:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant
to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Vertiv | Liebert CRD10 | User Manual iii
Version History
Revision Date
Code
Version Number
16-06-2019
31014025
1.0
29-07-2019
31014025
1.1
30-10-2019
31014025
1.2
16-03-2020
31014025
1.3
25-05-2020
31014025
1.4
05-11-2020
31014025
1.5
Vertiv | Liebert CRD10 | User Manual iv
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important safety instructions that should be followed during the installation and
maintenance of the Liebert CRV. Read this manual thoroughly before attempting to install or operate
this unit.
Only qualified personnel should move, install or service this equipment.
Adhere to all warnings, cautions, notices and installation, operating and safety instructions on the unit
and in this manual. Follow all installation, operation and maintenance instructions and all applicable
national and local building, electrical and plumbing codes.
Any operation that requires opening doors or equipment panels must be carried out only by properly
trained and qualified personnel.
To identify the unit model and serial number for assistance or spare parts, locate the identification
label on the unit.
A warning label on the front and back panels reminds users that:
• the Liebert® CRV restarts automatically
• the main switch must be opened before opening the internal compartments for any operation.
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply
disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved
personal protective equipment (PPE) per NFPA 70E before working within the electric control
enclosure. Failure to comply can cause serious injury or death. Customer must provide earth ground
to unit, per NEC, CEC and local codes, as applicable. Before proceeding with installation, read all
instructions, verify that all the parts are included and check the nameplate to be sure the voltage
matches available utility power. The Liebert® controller does not isolate power from the unit, even in
the “Unit Off” mode. Some internal components require and receive power even during the “Unit Off”
mode of the controller. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic. Follow all local codes.
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of
high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or
death. This unit contains fluids and gases under high pressure. Use extreme caution when charging
the refrigerant system. Do not pressurize the system higher than the design pressure marked on the
unit's nameplate.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death.
Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that
power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or
on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a
power failure.
Vertiv | Liebert CRD10 | User Manual v
WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipment damage, injury
or death. Read all of the following instructions and verify that all lifting and moving equipment is
rated for the weight of the unit before attempting to move, lift, remove packaging from or prepare
the unit for installation.
WARNING! Risk of unsecured unit rolling off pallet. Can cause equipment damage, injury or death.
The unit is on casters. Ensure that the unit/pallet is located on a flat surface before loosening the
hardware securing the to its shipping pallet.
WARNING! Risk of hair, clothing and jewelry entanglement with high speed rotating fan blades. Can
cause equipment damage, serious injury or death. Keep hair, jewelry and loose clothing secured and
away from rotating fan blades during unit operation.
WARNING! Risk of contact with extremely hot and/or cold surfaces. Can cause injury. Verify that all
components have reached a temperature that is safe for human contact or wear appropriate, OSHA-
approved PPE before working within the electric connection enclosures or unit cabinet. Perform
maintenance only when the system is de-energized and component temperatures have become safe
for human contact.
WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment
damage, serious injury or death. Installation and service of this equipment should be done only by
qualified personnel who have been specially-trained in the installation of air-conditioning equipment
and who are wearing appropriate, OSHA-approved PPE.
WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can cause overheated
wire and electrical connection terminals resulting in smoke, fire, equipment and building damage,
injury or death. Use correctly sized copper wire only and verify that all electrical connections are tight
before turning power On. Check all electrical connections periodically and tighten as necessary.
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and
remote electric power supply disconnect switches and verify with a voltmeter that power is off before
working within any electric connection enclosures. Service and maintenance work must be performed
only by properly trained and qualified personnel and in accordance with applicable regulations and
manufacturers’ specifications. Opening or removing the covers to any equipment may expose
personnel to lethal voltages within the unit even when it is apparently not operating and the input
wiring is disconnected from the electrical source.
WARNING! Risk of electric shock. Can cause injury or death. Open all local and remote electric power-
supply disconnect switches and verify that power is Off with a voltmeter before working within the
condensate pump electrical connection enclosure. The Liebert® controller does not isolate power
from the unit, even in the “Unit Off” mode. Some internal components require and receive power
even during the “Unit Off” mode of the Liebert® controller.
Vertiv | Liebert CRD10 | User Manual vi
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only
properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to
move, lift, remove packaging from or prepare the unit for installation.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss. Depending on the
installation and operating conditions, a sound pressure level greater than 70 dB(A) may arise. Take
appropriate technical safety measures. Operating personnel must wear appropriate, OSHA-approved
PPE and observe all appropriate hearing-protection safety requirements.
CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component rupture
resulting in equipment damage and personal injury. Do not close off the refrigerant-line isolation
valve for repairs unless a pressure-relief valve is field- installed in the line between the isolation valve
and the check valve. The pressure-relief valve must be rated 5% to 10% higher than the system-design
pressure. An increase in ambient temperature can cause the pressure of the isolated refrigerant to
rise and exceed the system-design pressure rating (marked on the unit nameplate).
NOTICE!
Risk of improper power-supply connection. Can cause equipment damage and loss of warranty
coverage.
Prior to connecting any equipment to a main or alternate power source (for example: back-up
generator systems) for start-up, commissioning, testing, or normal operation, ensure that these
sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be
connected. In general, power-source voltages should be stabilized and regulated to within ±10% of the
load nameplate nominal voltage. Also, ensure that no three-phase sources are single-phased at any
time.
NOTICE!
CRD10 unit 96VA transformer default wiring is orange cable (230V to 24V). If the unit rated voltage is
208V, a properly trained and qualified electrician must change the transformer wiring from orange to
red cable (208V to 24V). See section 4.3.3 Transformer Connection Cable for details.
NOTICE!
Risk of oil contamination with water. Can cause equipment damage.
Liebert® CRV systems require the use of PVE (FV50S) oil. PVE oil absorbs water at a much faster rate
when exposed to air than previously used oils. Because water is the enemy of a reliable refrigeration
system, extreme care must be used when opening systems during installation or service. If water is
absorbed into the PVE oil, it will not be easily removed and will not be removed through the normal
evacuation process. If the oil is too wet, it may require an oil change. PVE oils also have a property
that makes them act as a solvent in a refrigeration system. Maintaining system cleanliness is
extremely important because the oil will tend to bring any foreign matter back to the compressor.
Vertiv | Liebert CRD10 | User Manual vii
NOTICE!
Risk of improper refrigerant charging. Can cause equipment damage.
Refrigerant charge must be weighed into air-cooled compressorized systems before they are started.
Starting compressors without proper refrigerant charging can cause the compressors to operate at
less than 5°F (–15°C) evaporator temperature and at less than 20 psig (138 kPa). Operation for
extended periods at less than 20 psig (138 kPa) can cause premature compressor failure.
NOTICE!
Risk of clogged or leaking drain lines and leaking water-supply lines. Can cause equipment and
building damage.
This unit requires a water drain connection. Drain lines must be inspected at start-up and periodically,
and maintenance must be performed to ensure that drain water runs freely through the drain system
and that lines are clear and free of obstructions and in good condition with no visible sign of damage
or leaks. This unit may also require an external water supply to operate.
Improper installation, application and service practices can result in water leakage from the unit.
Water leakage can result in catastrophic and expensive building and equipment damage and loss of
critical data center equipment.
Do not locate unit directly above any equipment that could sustain water damage.
We recommend installing a monitored fluid-detection system to immediately discover and report
coolant-fluid system and condensate drain-line leaks.
NOTICE!
Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may be too
large to fit through a doorway or hallway while on the skid. Measure the unit and passageway
dimensions, and refer to the installation plans prior to moving the unit to verify clearances.
NOTICE!
Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a height
suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.
NOTICE!
Risk of improper storage. Can cause unit damage.
Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact
damage.
NOTICE!
Risk of improper maintenance. Can cause equipment damage.
Installation and service of this equipment should be done only by qualified personnel who have been
specially-trained in the installation of air-conditioning equipment and who are wearing appropriate,
OSHA-approved PPE."
Vertiv | Liebert CRD10 | User Manual viii
Ignoring safety instructions is dangerous. Soiled parts cause a loss of performance and, for switch or
control devices, can lead to the breakdown of the unit performance and operation.
NOTICE!
Risk of release of hazardous substances into the environment. Can cause environmental pollution and
violation of environmental regulations.
The Liebert® CRV contains substances and components hazardous for the environment (electronic
components, refrigerating gases and oils). At the end of its useful life, the Liebert® CRV must be
dismantled by specialized refrigerating technicians. The unit must be delivered to suitable centers
specializing in the collection and disposal of equipment containing hazardous substances.
Agency Listed Standard 60-Hz units are UL Certified to the harmonized U.S. and Canadian product safety
standard CSA C22.2 No 236/UL 1995 for “Heating and Cooling Equipment” and are marked with the UL
logo.
Vertiv | Liebert CRD10 | User Manual ix
Table of Contents
Chapter 1: Product Overview .......................................................................................................... 1
1.1 Product Introduction ....................................................................................................................... 1
1.2 Product Description ......................................................................................................................... 3
1.3 Model Nomenclature ....................................................................................................................... 5
1.4 Basic Performance Parameters ....................................................................................................... 7
1.5 Sound parameters ........................................................................................................................... 8
1.6 Main Components of Indoor Unit.................................................................................................... 8
1.7 Technical Specification .................................................................................................................. 14
Chapter 2: Installation ................................................................................................................... 15
2.1 Pre-Installation .............................................................................................................................. 15
2.2 Installation Tools ............................................................................................................................ 16
2.3 Prerequisite Arrangements ........................................................................................................... 17
2.4 Transportation & Movement ......................................................................................................... 18
2.5 Unpacking ...................................................................................................................................... 20
2.6 Installation Preparation (Site Preparation) ................................................................................... 22
2.7 Operating and Storage Environment Conditions .......................................................................... 24
2.8 Weight Bearing Capacity................................................................................................................ 24
2.9 Refrigerant Charging Requirement ................................................................................................ 25
2.10 Inspection ...................................................................................................................................... 25
Chapter 3: Mechanical Installation ................................................................................................ 26
3.1 Installation Notes ........................................................................................................................... 26
3.2 System Arrangement during Installation ....................................................................................... 26
3.3 Product Dimensions ....................................................................................................................... 28
3.4 Top frame and front frame ............................................................................................................ 32
3.5 System Installation Layout ............................................................................................................. 34
3.6 Installation Procedures .................................................................................................................. 35
3.7 Cabinet Connection ....................................................................................................................... 37
3.8 Installing Liquid Line Solenoid Valve Kit and Low Ambient Kit ...................................................... 43
3.9 Recommended Refrigerant and Oil Charging Amount of the System........................................... 46
3.10 Adjusting the Supply Air Baffle and Sealing the Holes .................................................................. 48
3.11 Checklist for Completed Mechanical Installation .......................................................................... 50
Chapter 4: Electrical Installation .................................................................................................... 51
Vertiv | Liebert CRD10 | User Manual x
4.1 Installation Notes ........................................................................................................................... 51
4.2 CRD10 Wiring Connections ............................................................................................................ 52
4.3 Connection of the Control Cables .................................................................................................. 55
4.4 Checklist for the Completed Electrical Installation ....................................................................... 62
Chapter 5: Commissioning Overview ............................................................................................. 63
5.1 Self Check ....................................................................................................................................... 63
5.2 Preparations for Start-up ............................................................................................................... 64
5.3 Refrigerant Charge ......................................................................................................................... 66
5.4 Start-up Procedure ........................................................................................................................ 68
Chapter 6: Micro-Controller .......................................................................................................... 70
6.1 Features ......................................................................................................................................... 70
6.2 Appearance .................................................................................................................................... 71
6.3 Control Screen ............................................................................................................................... 72
6.4 Menu Structure .............................................................................................................................. 76
6.5 Run Information ............................................................................................................................. 77
6.6 Alarm Information ......................................................................................................................... 78
6.7 Temp/Hum Setting ........................................................................................................................ 80
6.8 Parameter Setting .......................................................................................................................... 81
6.9 Graph ............................................................................................................................................. 85
6.10 About ............................................................................................................................................. 85
Chapter 7: Maintenance & Troubleshooting .................................................................................. 87
7.1 Routine Maintenance & Inspection (Monthly) .............................................................................. 88
7.2 Routine Maintenance and Inspection (Semi- annually) ................................................................ 90
7.3 Self-Diagnosing Functions .............................................................................................................. 91
7.4 Maintenance of Electrical Control Utilities .................................................................................... 91
7.5 Air Filter Maintenance ................................................................................................................... 94
7.6 Fan Kit Maintenance ...................................................................................................................... 94
7.7 Electrical Heater Maintenance (Only CE Model) ........................................................................... 96
7.8 Condensate pump maintenance ................................................................................................... 98
7.9 Refrigerating System Maintenance ............................................................................................... 99
7.10 Drainage System Maintenance ....................................................................................................100
7.11 Dismantling the Unit ....................................................................................................................100
7.12 Troubleshooting ...........................................................................................................................100
Vertiv | Liebert CRD10 | User Manual xi
Chapter 8: Regulation (EU) no. 517/2014 (F-gas) .......................................................................... 104
8.1 Introduction .................................................................................................................................104
8.2 Normative References .................................................................................................................104
8.3 Fluorinated Greenhouse Gases ...................................................................................................104
8.4 Operators .....................................................................................................................................105
8.5 Leakage Detection .......................................................................................................................106
8.6 Labelling .......................................................................................................................................106
8.7 Record Keeping ............................................................................................................................107
Appendix I: Display menu structure ............................................................................................. 108
Appendix II: Display parameter list .............................................................................................. 109
Appendix III: Alarms Table ........................................................................................................... 112
Product Overview
Vertiv | Liebert CRD10 | User Manual 1
Chapter 1: Product Overview
The Liebert CRV, CRD10 is the next generation of air conditioner that provide precise environmental
control. The Liebert CRV, CRD10 models are the latest in the long chain of modern enterprise-grade
products from the Liebert family. Incorporating the high standards associated with the Liebert name, the
CRD10 utilizes the latest technology, system components, and streamlined manufacturing process.
1.1 Product Introduction
CRD10 air conditioners are products specifically created and designed for small to medium data centers,
computer rooms, equipment room, modularized machine room and similar high heat density systems
requiring a high degree of accuracy and precision. It addresses the needs and challenges associated with
such applications and setups. It caters to sensitive applications which need a suitable environment for
optimal performance. Therefore, care should be taken when testing the product to maintain favorable
conditions for mission-critical equipment. Thermal management units must not only keep the room
conditions within a specific range but also be able to react quickly to drastic changes in the heat load and
prevent wide temperature fluctuations.
CRD10 air-cooled AC unit is packed with features like high reliability, high sensible heat ratio, and large
airflow. The Liebert CRD10 is an advanced row-based cooling unit. It provides the 10kW cooling capacity
under designed condition. It can adjust the cooling capacity by changing the output of inverter
compressor and EC fans, depending on the change in the heat load.
CRD10 air-cooled unit requires a condenser. The condenser is powered and controlled by indoor unit.
Figure 1-1 Appearance of the Air Conditioner
Front Rear
Product Overview
Vertiv | Liebert CRD10 | User Manual 2
Refer Figure 1-2 for the nameplate description of the CRD10 model:
UL Model:
POS.
DESCRIPTION
POS.
DESCRIPTION
1
Unit defined by 6 digits
10
Rated load current of compressor
2
Model defined by 12 digits
11
Refrigerant Amount Charged on site
3
Supply Power
12
Discharge Side Excessive Operating Pressure
4
Cooling capacity
13
Suction Side Excessive Operating Pressure
5
Indoor fan power in total
14
Minimum Circuit Amps
6
Indoor fan full load current in total
15
Maximum Overcurrent Protection
7
Outdoor fan power in total
16
Equipped with outdoor model
8
Outdoor fan full load current in total
17
Serial Number
9
Locked rotor current of compressor
CE Model:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
1
3
4
6
7
8
9
10
2
5
11
12
13
14
15
16
17
18
Product Overview
Vertiv | Liebert CRD10 | User Manual 3
POS.
DESCRIPTION
POS.
DESCRIPTION
1
Unit defined by 6 digits
10
Short-circuit current rating
2
Model defined by 12 digits
11
Net weight and Gross weight
3
Supply Power
12
Max Allowable Pressure of the Unit
4
Refrigerant Category
13
Discharge Side Excessive Operating Pressure
5
Global Warming Potential
14
Suction Side Excessive Operating Pressure
6
Refrigerant Amount Charged on site
15
Heat Exchange Max Working Pressure
7
CO2 Tonnes
16
Class of Equipment
8
Full load Current
17
Manufacturing Date
9
Heater type and power
18
Serial Number
Figure 1-2 Product Nameplate and Model Description
1.2 Product Description
The CRD10 cooling unit is a comprehensive system that includes all the main functions fundamental to
precision cooling units such as cooling, dehumidification, reheating(CE certified model only), air filtration,
condensation management, temperature control, alarm functions and compatibility with data
communications. CRD10 is designed to comply with mission-critical requirements and ensure that servers
are maintained at the correct temperature and humidity levels. Figure 1-3 & 1-4 shows the various
components and their respective locations.
Figure 1-3 Components and their Locations at Rear
1
2
3
4
5
6
7
8
Product Overview
Vertiv | Liebert CRD10 | User Manual 4
Figure 1-4 Components and their Locations at Front
Item
Description
Item
Description
1
Drainage pipe of pump
7
Condensate pump
2
Supply and Return refrigerant pipe
8
Electric heaters (optional)
3
Top electrical entrance
9
Evaporative Coil
4
Electric box
10
EC plug fans
5
Compressor Driver
11
Baffles
6
Compressor
Table 1-1 CRD10 Dimensions
Model
Unit Dimensions
(W x D x H) mm(inch)
Package Dimensions
(W x D x H) mm(inch)
Net weight
(kg/lb)
Gross weight
(kg/lb)
CRD100-0D00A
300x1132x2000
(11.8x44.6x78.7)
776x1276x2228
(30.6x50.2x87.7)
231/509
313/690
CRD101-0D00A
CRD102-1D00A
9
10
11
Product Overview
Vertiv | Liebert CRD10 | User Manual 5
1.3 Model Nomenclature
The model of the CRD10 air conditioner is fully-defined by 12 digits as shown in Table 1-2, and details of the
condenser is given in Table 1-3.
Table 1-2 Model Nomenclature Indoor Unit
Digit
1
2
3
4
5
6
7
8
9
10
11
12
Example
C
R
D
1
0
0
-
0
D
0
0
A
Digit
Variable
Description of Variable
1
CR
Liebert CRV
2
3
D
D- DX (Air cooled)
W- (Water cooled)
C- (Chilled water)
4
10
Model Number: 10
5
6
0,1,2
0- 208/230V/1Ph/60Hz, UL
1- 208/230V/3Ph/60Hz, UL
2- 230V/1Ph/50/60Hz, CE
7
-
Separator
8
0,1
0- Cooling only
1- Reheat only
9
D
D- Dual Power Supply
10
0
0- R410A refrigerant
11
0
Free digit (future)
12
A~Z
Revision
Product Overview
Vertiv | Liebert CRD10 | User Manual 6
Table 1-3 Model Nomenclature of Condenser Unit
Digit
1
2
3
4
5
6
7
8
9
10
11
Example
C
C
D
1
0
0
S
-
0
0
A
Digit
Variable
Description of Variable
1
CCD
Liebert CRV Condenser
2
3
4
10
Model Number: 10
5
6
0,1
0- 208/230V/1Ph/60Hz, UL
1- 230V/1Ph/50/60Hz, CE
7
S
S- Standard Temp (-15°C to 45°C [5°F to 113°F])
8
-
Separator
9
0
0- R410A refrigerant
10
0
Free digit (future)
11
A~Z
Revision
Product Overview
Vertiv | Liebert CRD10 | User Manual 7
1.4 Basic Performance Parameters
The basic performance parameters of the Liebert CRD10 are given in Table 1-4.
Table 1-4 Performance Parameters
Certification
UL
CE
Unit
CRD100
CRD101
CRD102
Model
CRD100-0D00A
CRD101-0D00A
CRD102-1D00A
Voltage/Frequency
208/230V 1PH 60Hz
208/230V 3PH 60Hz
230V 1PH 50/60Hz
Cooling Capacity (kW)
10.0
10.0
10.0
Heating Capacity (kW)
-
-
2.0
Power Input(kW)
3.2
3.2
3.2(Without the heater)
Full Load Current (A)
-
-
38 (With the heater)
28 (Without the heater)
MCA (A)
29
21
-
MOP (A)
40
30
-
Test Condition: Return air 29.4°C (85°F), 32% RH & 35°C (95°F) Outdoor temperature.
Note: The allowed thermal load shall not be lower than 20% of nominal air conditioner cooling capacity.
Lower thermal load will drive to imprecise temperature and humidity control and frequent compressor(s)
switch on/off.
The performance data of CRD100 and CRD101 rated with the AHRI stand 1360 are given in Table 1-5.
Table 1-5 Performance data of AHRI
Model Number
CRD100-0D00A
CRD101-0D00A
Voltage (Volts/Phase/Hz)
208/1/60
230/1/60
208/3/60
230/3/60
Net Total Cooling Capacity, kW (kBtuh)
10.0(34.1)
9.98(34.0)
10.32(35.2)
10.41(35.5)
Net Sensible Cooling Capacity, kW (kBtuh)
9.92(33.8)
9.96(33.9)
10.08(34.4)
10.12(34.5)
Net Sensible Coefficient of Performance (NSenCOP),
kW/kW
3.57
3.62
3.69
3.71
Unit Airflow, ACFM
1960
1961
1897
1898
Unit Airflow, SCFM
1896
1887
1835
1836
Ext. Static Pressure, Pa
0.0
0.0
Humidification
None
None
Refrigerant
R-410A
R-410A
Return Air Conditions 95°F DB, 52°F DP (35°C DB, 11.1°C DP) 32% RH
Outdoor Ambient Temperature 95°F (35°C)
Certified in accordance with the AHRI Datacom Cooling Certification Program at AHRI Standard 1360 Standard
Rating Conditions. Certified units may be found in the AHRI Directory at www.ahridirectory.org.
Product Overview
Vertiv | Liebert CRD10 | User Manual 8
1.5 Sound parameters
The sound parameters of the Liebert CRD10 are given in Table 1-6.
Table 1-6 Sound Parameters
1/3 Octave
Band Center
Freq [Hz]
Air volume
50
dB
63
dB
80
dB
100
dB
125
dB
160
dB
200
dB
250
dB
315
dB
400
dB
500
dB
630
dB
m3/h
SCFM
IDFAN 75%
3250
1913
28.6
25.4
33.8
33.7
32.3
40.2
42.7
46.4
52.9
68.3
67.3
58.0
IDFAN 70%
3000
1766
29.1
24.5
34.7
31.2
30.9
38.2
40.5
45.2
53.6
64.4
58.9
56.2
IDFAN 60%
2500
1471
24.8
26.8
28.9
28.9
30.9
33.9
39.3
45
59.3
59.5
53.2
59.4
1/3 Octave
Band Center
Freq [Hz]
800
dB
1000
dB
1250
dB
1600
dB
2000
dB
2500
dB
3150
dB
4000
dB
5000
dB
6300
dB
8000
dB
10000
dB
db(A
)
IDFAN 75%
63
63.1
67.8
65.7
65.4
66.4
63.7
61.8
59.8
57.4
55.2
49.4
76.3
IDFAN 70%
62.1
58.7
64.4
64.4
63.6
64.1
61.5
60.1
57.8
55.2
52.6
47.2
73.1
IDFAN 60%
60
59.2
59.7
60.4
59
59.7
57.4
55.4
53.1
50.1
47.1
42.3
70.1
Test Conditions:
• Semi-anechoic chamber environmental test.
• The test point is 2m(6.6ft.) away from the unit and 1m(3.3ft.) away from the ground.
1.6 Main Components of Indoor Unit
The following section expounds the list of components used in the CRD10 Precision Air conditioning models.
1.6.1
DC Brushless Compressor
The CRD10 Air conditioning models comprise of a DC Brushless compressor which has a host of promising
features as mentioned in the following list:
• Low operational noise
• Rapid Cooling
• Less Vibration
Figure 1-5 DC Brushless Compressor
Product Overview
Vertiv | Liebert CRD10 | User Manual 9
1.6.2
Fan
The EC Fan used in the CRD10 models are energy-efficient and innovative with integrated electronics and a
maintenance-free design.
• Ability to regulate the airflow and reduce the fan input power leading to high energy-efficiency.
• Hot swappable, easy-to-connect facility with minimal wiring resulting in to high performance with a wide
range of possible air flow rates. Figure 1-6 shows the EC Fan used in CRD10 model.
Figure 1-6 EC Fan
1.6.3
Evaporator
The sophisticated design of the distributor ensures that the refrigerant is evenly distributed in each loop,
thereby improving the effectiveness of the heat exchanger.
• Streamlined heat exchanger design and air distribution for optimum performance.
• Fin-tube heat exchanger for higher efficiency Figure 1-7 shows the image of an evaporator.
Figure 1-7 Evaporator
Product Overview
Vertiv | Liebert CRD10 | User Manual 10
1.6.4
Electronic Expansion Valve (EEV)
The EEV is designed for modulating control of the refrigerant mass flow with precision. The EEV simultaneously
collects temperature and pressure signals regulate the refrigerant flow accurately. The EEV’s wide operating
envelope also lowers down the condensing pressure, thereby resulting in significant energy savings.
• Designed for modulating control of the refrigerant mass flow with precision
• Ensures effective control on super-heating at the end of the evaporator
• Better low load capacity
• Designed for easy Installation-and-Service. Figure 1-8 shows the image for the EEV used in the CRD10
models.
Figure 1-8 Electronic Expansion Valve
1.6.5
Electric Heater
In the CRD10 models, the PTC (Positive Temperature Coefficient) heater is used on models equipped with
reheat, as they have lower running temperatures, thereby ensuring operational safety.
• Less susceptible to overheating and long lasting due to less wear
• Lower Maintenance and smooth operation, Figure 1-9 shows an image of the electric heater.
Figure 1-9 PTC Heater
1.6.6
Sight Glass
The sight glass is a utility for observing the refrigerant state; specifically, the moisture content of the system. If
the moisture content exceeds the defined standards, the color changes, thereby, indicating irregularity in the
moisture content.
Product Overview
Vertiv | Liebert CRD10 | User Manual 11
1.6.7
Filter Drier
Moisture in the refrigeration lifecycle can adversely affect the operations and service life of a system. In order
to rectify that condition, filter driers are used to filter out particles, remove, and hold moisture to prevent it
from circulating through the system.
1.6.8
Micro-Controller
The micro-controller used in CRD10 provides a simple operational user-interface and is developed using the
latest and highly advanced PID (Proportional–Integral–Derivative) regulation technology.
• Multilevel Password protection
• Self-recovery upon power failure, high-voltage & low-voltage protection & Phase loss protection
• Automatic phase-sequence switching upon the antiphase and rotate speed control of the outdoor fan
• High-end Fault diagnostic system to facilitate easy equipment maintenance Figure 1-10 shows the image of
the micro-controller
Figure 1-10 Display Panel of the Controller
1.6.9
Unity Card
The CRD10 unit is equipped with a Unity card. Unity card employs the Modbus Protocol to monitor and manage
a wide range of operating parameters, alarms, and notifications from the Micro-controller. The card
communicates with Building Management Systems and Network Management Systems via BACnet, Modbus,
SNMPv1/v2c/v3, LIFE/Remote Services, and YDN23 protocols.
The Unity card monitors up to 10 Liebert SN modular and integrated sensors. Available sensor types include
Product Overview
Vertiv | Liebert CRD10 | User Manual 12
temperature, humidity, door closure, contact closure and leak detection. Sensor tab menus permit configuring
sensors and putting them in user-configured order for easier checking of high-priority conditions. Sensor data is
available via SNMP and the Web user interface.
1.6.10
Remote Temperature Sensor
The Liebert CRD10 models are compatible with multiple temperature sensors based on the requirement. Each
unit can be connected with up to maximum 10 temperature sensors.
1.6.11
Condensate pump
The Liebert CRD10 models include a condensate pump which is used for drainage. The performance curve is
shown in Figure 1-11.
Note: Maximum recommended vertical rise is 5m(16.4ft.).
Figure 1-11 Performance curve of condensate pump
1.6.12
Liquid Line Solenoid Kit
The liquid line solenoid kit is a solenoid valve used to prevent refrigerant from condensing into liquid line in
condenser and pipe of outdoor when the unit is turned off at the condition of low ambient temperature.
Figure 3-1 shows the install location of solenoid valve in the system. Figure 1-12 shows the solenoid valve.
Figure 1-12 Solenoid Valve
Not Recommended
Performance curve
Product Overview
Vertiv | Liebert CRD10 | User Manual 13
1.6.13
Ramp
Ramp is used to easily remove the unit from the pallet, the operation process illustration is shown in Figure
1-13.
Figure 1-13 Ramp Unloading
Remove the
fixing screws and
sheet metal
Place a slope
and connect it
with the pallet
Push the cabinet
slowly from the pallet
down to the ground
along the slope
Product Overview
Vertiv | Liebert CRD10 | User Manual 14
1.7 Technical Specification
The detailed technical specifications which include the mechanical and the electrical details are mentioned
in Table 1-7.
Table 1-7 Technical Specifications of the Unit
Parameters
Specifications
Unit
CRD100
CRD101
CRD102
Model
CRD100-0D00A
CRD101-0D00A
CRD102-1D00A
Certification
UL
CE
Cooling Type
Air Cooled
Cold Source Type
DX
Refrigerant
R410A
Compressor Type
Double rotor DC Inverter Compressor
Flow Control
Electronic Expansion Valve
Fan Type
EC Fan
Air Filter
MERV8
G4
Air Discharge Baffles
Standard
Drain Pump
Standard
Air Pressure Switch
Standard
Unity Card
Standard
Remote Sensors
Standard
Reheat
No
Standard
Matched with outdoor model
CCD100S-00A
CCD101S-00A
Installation
Vertiv | Liebert CRD10 | User Manual 15
Chapter 2: Installation
WARNING! Risk of improper wiring, piping, moving, lifting and handling. Can cause equipment
damage, serious injury or death. Installation and service of this equipment should be done only by
qualified personnel who have been specially-trained in the installation of air-conditioning equipment
and who are wearing appropriate, OSHA-approved PPE.
NOTICE:
Before installing unit, determine whether any building alterations are required to run piping, wiring
and duct work. Follow all unit dimensional drawings and refer to the submittal engineering
dimensional drawings of individual units for proper clearances.
The Installation process consists of the following procedures, namely-
• Pre-installation
• Installation Preparation
• Mechanical Installation
• Electrical Installation
2.1 Pre-Installation
CRD10 precision air conditioner is an engineered equipment and requires installation works for which the
preliminary preparation is very important. This chapter describes the pre-installation, including how to prepare
the installation environment, space and reserve the maintenance space; the air conditioner running and
storage environment requirement, and how to unpack and inspect.
NOTE: Please read this chapter carefully before installation.
Pre-installation contains the following 3 sub sections, namely-
• Transportation & Movement
• Unpacking
• Inspection
Installation
Vertiv | Liebert CRD10 | User Manual 16
2.2 Installation Tools
Table 2-1 shows the standard tool sets and utilities used in the installation and maintenance process:
Table 2-1 Standard Tool Sets
Name
Drawing
Name
Drawing
Electric hand drill
Adjustable wrench
Slotted screwdriver
Cross head screwdriver
Stepladder
Forklift
Drill
Wire cutting pliers
Claw hammer
Diagonal cutting
pliers
Insulating shoes
Antistatic gloves
Electrician knife
Cable ties
Insulating tape
Insulating gloves
Crimping pliers
Heat shrinkable tube
Insulated torque wrench
Torque screwdriver
Multimeter
Clip-on ammeter
The tools mentioned in Table 2-1 are standard and commonplace; however, depending on various factors such
as site environment, cables, installation equipment, and on-site electrical connections these tools may vary in a
real-time scenario.
• Fasteners
The fasteners are shown in the Figure 2-1.
Figure 2-1 Fasteners
Floating nut
M5 countersunk head screw
M6 panel screw
M6 panel head screw
Cable tie fixture kit
Installation
Vertiv | Liebert CRD10 | User Manual 17
The fastener nuts and their usage are shown in Table 2-2.
Table 2-2 Fitting Utilities
Fasteners
Usage
Floating Nut
Used together with the M6 screw, used to install the parts in the cabinet
M5 Countersunk Head Screw
Used to install the cabinet connector
M6 Panel Screw
Used to install the power distribution unit, monitoring system, & User
equipment
M6 Pan Head Screw
Used to connect and fix the frame
M6 Flange Nut
Used together with the M6 Pan head screw, used to install the L Fastener
Adhesive Tape
Used to seal the gap between the connected frames
Cable Tie Fixture Kit
Used to fix & bind the cables
2.3 Prerequisite Arrangements
The cables routed from the room to the CRD10 unit and the circuit breakers must be prepared at the
customer’s site or obtained by the customer; the specifications for the site preparation are given in the Table 2-
3.
Table 2-3 Prerequisite Materials Requirements
Parts
Specifications
Input power supply cables
Please refer to FLA (MCA) of the Unit
System Grounding cables
Please prepare the yellow/Green cable
Liquid copper pipes
Please refer to pipe connection of Unit
Gas copper pipes
Please refer to pipe connection of Unit
External drainage pipe
External drainage pipe with screws, please refer to drainage
pipe connection.
Installation
Vertiv | Liebert CRD10 | User Manual 18
2.4 Transportation & Movement
WARNING! Risk of top-heavy unit falling over. Improper handling can cause equipment damage, injury
or death. Read all of the following instructions and verify that all lifting and moving equipment is
rated for the weight of the unit before attempting to move, lift, remove packaging from or prepare
the unit for installation.
WARNING! Risk of unsecured unit rolling off pallet. Can cause equipment damage, injury or death.
The unit is on casters. Ensure that the unit/pallet is located on a flat surface before loosening the
hardware securing the to its shipping pallet.
CAUTION: Risk of contact with sharp edges, splinters, and exposed fasteners. Can cause injury. Only
properly trained and qualified personnel wearing appropriate, OSHA-approved PPE should attempt to
move, lift, remove packaging from or prepare the unit for installation.
NOTICE!
Risk of doorway/hallway interference. Can cause unit and/or structure damage. The unit may be too
large to fit through a doorway or hallway while on the skid. Measure the unit and passageway
dimensions, and refer to the installation plans prior to moving the unit to verify clearances.
NOTICE!
Risk of damage from forklift. Can cause unit damage. Keep tines of the forklift level and at a height
suitable to fit below the skid and/or unit to prevent exterior and/or underside damage.
NOTICE!
Risk of improper storage. Can cause unit damage.
Keep the unit upright, indoors and protected from dampness, freezing temperatures and contact
damage.
Transportation by rail or by ship are the preferred options for the units. If transport by rail or by ship is
unavailable, transport by road is recommended. When selecting road transport, roads without too many
bumps are highly recommended.
• Liebert CRD10 unit is heavy, it is recommended to use the mechanical equipment like electrical forklift to
move the unit.
• Move the equipment to the location near the installation site.
• If an electric forklift is used, insert the tines of the forklift below the pallet as displayed in Figure 2-2.
• Figure 2-2 shows how the forklift tines are inserted underneath the pallet and shows in the same picture
below the illustration to the right that the lines should be aligned with the center of gravity to prevent the
Installation
Vertiv | Liebert CRD10 | User Manual 19
equipment from falling over.
Figure 2-2 Moving the Equipment using a Forklift Truck
While moving the indoor unit, keep the obliquity within the range of 75° to 105°, as shown in Figure 2-3.
Figure 2-3 Obliquity of the System
Installation
Vertiv | Liebert CRD10 | User Manual 20
2.5 Unpacking
Shift the product to a location closer to the final installation site prior to unpacking the unit. Open all the
latches on the shipping crate, then remove top and later wooden panels of shipping crate as depicted in Figure
2-4.
Figure 2-4 Unpacking the Outer Package
Remove the side
wooden panel
Remove the top
wooden panel
Remove attaching screws
Installation
Vertiv | Liebert CRD10 | User Manual 21
Take care of the center of the gravity.
Figure 2-5 Axis of Coordinates
•
Inspection
Moving forward, check the system fittings and its components against the packing list to ensure that
everything is in place and the assembly is intact. If any parts or components are missing or damaged,
immediately report the issue to the carrier and the local office of Vertiv at the earliest.
CENTER OF GRAVITY
±10mm (0.4in.)
X
Y
Z
150mm (5.9in.)
550mm (21.7in.)
970mm (38.2in.)
X
Y
Z
Installation
Vertiv | Liebert CRD10 | User Manual 22
2.6 Installation Preparation (Site Preparation)
The CRD10 models of air conditioners are streamlined for maintaining a favorable environment for data
centers, computer rooms, and similar systems. Strict adherence to the installation procedures is mandatory
to ascertain proper installation of the air conditioner.
2.6.1
Equipment Room Requirement
The equipment room must be prepared to ensure smooth operation and obtain accurate results. The
equipment room must meet the standards for appropriate ventilation and heating. The design specifications
for the air conditioners must be ideal and should be-in-line with energy-efficient design standards. Following
are the requirements for maintaining a favorable room environment prior to installation:
1. The equipment room should be well insulated and have a sealed damp-proof layer.
2. The outdoor air entering in should be kept at a minimum. The outside air will add the loads of heating,
cooling, humidifying, and dehumidifying of the system. It is recommended that the inhalation of outside
air be kept below 5% of the total indoor airflow.
3. All the doors and windows should be properly sealed to minimize the leakage. The seams should be as
narrow as possible.
NOTES:
• Vertiv recommends defining the site preparation as per the requirements. However, if these
requirements are not met, the site must be rectified to meet the specified requirements and
conditions.
• If the recommended rectifications or modifications are not implemented, then Vertiv does not
guarantee the accuracy and precision of the temperature and humidity provided by the Liebert CRD10
models.
• An important aspect to be considered is that the indoor unit must not be used for the outdoor
environment.
2.6.2
Installation Space Requirements
The Liebert CRD10 models are advanced precision air cooling units and therefore, air conditioners must be
installed, preferably in a row of cabinets with high heat density and in a hot aisle and cold aisle arrangement.
Allocate space to make it accessible to qualified service staff for repair, maintenance and service.
A minimum space of 600mm[23.6in.] must be assigned for maintenance at the front of the system and at
the rear of the system. The allocated space is to facilitate regular maintenance tasks such as removing filters
for cleaning, fans or compressor. Figure 2-6 shows the space allocation for servicing and maintenance.
Installation
Vertiv | Liebert CRD10 | User Manual 23
Figure 2-6 CRD10 Maintenance Space
1944mm
[76.5in.]
600mm
[23.6in.]
600mm
[23.6in.]
Installation
Vertiv | Liebert CRD10 | User Manual 24
2.7 Operating and Storage Environment Conditions
In this section, take a look at the environmental conditions including the Operating and Storage environment.
2.7.1
Operating Condition
Table 2-4 defines the operating condition parameters including the ambient temperature, protection level,
altitude and voltage range.
Table 2-4 Operating Parameters
Item
Requirement
Ambient temperature
Indoor: Temperature 18°C (64.4F) to 40°C (104F), Relative humidity 17% to 60%
Outdoor: Temperature -15°C (5°F ) to 45°C (113°F) without Low Ambient Kit
Temperature -34°C (-29.2°F ) to 45°C (113°F) with Low Ambient Kit
Protection level
Indoor Unit: IP20, Outdoor Unit: IPX4
Altitude
< 2000m(6561.6ft.). Above that, please contact Vertiv
Operation voltage range
CRD100-0D00A
CRD101-0D00A
CRD102-1D00A
208/230V/1PH/60Hz
208/230V/3PH/60Hz
230V/1PH/50/60Hz
2.7.2
Storage Condition
Table 2-5 defines the Storage condition parameters including the ambient humidity, ambient temperature, and
storage time conditions.
Table 2-5 Storage Parameters
Item
Requirement
Storage environment
Indoor, clean (without dust)
Ambient humidity
< 95%RH @ 30°C (86F)
Ambient temperature
-40°C (-40F) to 70°C(158F)
Storage time
Total transportation and storage time should not exceed six months. Otherwise, the
performance needs to be re-calibrated
2.8 Weight Bearing Capacity
The CRD10 unit is installed on the floor of the computer room, Therefore, the weight bearing capacity of the
floor of the computer room must be taken into consideration.
If the weight bearing capacity cannot be estimated, consult Vertiv or the customer service/support center.
Installation
Vertiv | Liebert CRD10 | User Manual 25
2.9 Refrigerant Charging Requirement
The CRD10 unit has a specifically designed air conditioning system that requires a desired pre-specified
quality of refrigerant (R410A) to perform continuously at the most optimum efficiency. For the details on the
quantity of refrigerant to be charged inside the system please refer to the installation section.
NOTE: Do not use refrigerant of inferior quality, Vertiv does not assume responsibility for warranty or any
consequences resulting from using inferior quality refrigerant.
2.10 Inspection
NOTES:
• To ensure that everything is in its designated position and that the entire product assembly is intact,
check the system fittings and their components against the packing list.
• Check that the fittings are complete and the components are intact against the packing list. Please
report immediately to the carrier’s local offices and Vertiv if any parts are missing or damage is found.
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 26
Chapter 3: Mechanical Installation
To achieve optimum performance and prolong product life, proper installation is important. In this section, the
mechanical installation will be discussed in detail to help the personnel with the installation process. Before
proceeding with the mechanical installation, the following 3.1 installation notes need to be considered.
3.1 Installation Notes
1. Prior to installation, ensure that the installation preparations have been carefully read and implemented
as per the requirement (refer to section 2.6 on ‘Installation Preparation’ for the details). Check if any
modifications are made to the plumbing, wiring, or ventilation facility before mounting the equipment.
After considering the installation preparations, proceed to the next step in the installation process and
finally set up the system.
2. The CRD10 is designed as a split system. The indoor unit must be installed on the floor of the equipment
room or computer room. The outdoor unit must be installed outdoors or on the floor of the other rooms
as per the building architecture.
3. Industry-wide standards are followed for the selection, layout, and fixing of pipes.
4. During the design and installation process, various factors such as pressure drop, compressor oil return,
noise reduction, and vibration must be considered.
5. When installing the equipment, follow the design drawings strictly. Reserve space as per the
maintenance and serviceability instructions in the Chapter 2, section ‘Installation Preparation’. The
manufacturing engineering dimension drawings must be taken as a reference while installing the
equipment.
3.2 System Arrangement during Installation
The general arrangement of the CRD10 air cooled AC unit is shown in Figure 3-1, and the Table 3-1 shows the
calibration of safety components.
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 27
Pos.
Description
Pos.
Description
1
Compressor
9
Air Cooled Condenser
2
Crankcase Heater
10
Solenoid Valve (Connection on site)
3
Discharge Temperature Sensor
11
Filter Drier
4
High Pressure Switch
12
Sight Glass
5
High Pressure Transducer
13
Electronic Expansion Valve
6
Schrader Valve
14
Evaporating Coil
7
Ball Valve
15
Suction Temperature Sensor
8
Check Valve
16
Low Pressure Transducer
Figure 3-1 System Arrangement of the Unit System
CRD10 Indoor unit
External to CCD Condenser
Connection pipe
○
16
○
15
○
14
○
6
○
6
○
2
○
1
MC
○
3
○
4
○
5
○
8
○
6
○
7
○
9
○
6
○
10
○
7
○
6
○
11
○
12
○
13
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 28
Table 3-1 Calibrations of electrical components
Refrigeration Circuit
Item No
Component
Setting
Notes
Contact
4
High Pressure Switch
Open 4.1±0.1MPa
Close 3.3±0.1MPa
Normally
Closed
5
High Pressure
Transducer
Range 0-4.5MPa
0.5-4.5VDC
-
16
Low Pressure
Transducer
Range 0-1.73MPa
0.5-4.5VDC
-
-
Clogged Filter
Different Pressure
Switch
Set Point Range
50-400Pa
Normally
Closed
3.3 Product Dimensions
The dimensions and weight of the indoor unit are shown in Figure 3-2 and in Table 3-2.
Figure 3-2 Dimensions of the Indoor Unit
Table 3-2 Dimension of the Indoor Unit
Model
H
(mm/in.)
H1
(mm/in.)
D
(mm/in.)
D1
(mm/in.)
W
(mm/in.)
Net
weight
(kg/lb)
Gross weight
(kg/lb)
CRD100-0D00A
2000/78.7
267/10.5
1132/44.6
100/3.9
300/11.8
231/509
313/690
CRD101-0D00A
CRD102-1D00A
Note: H1 and D1 dimensions are associated with optional frame extension kits allowing CRD10 to match
rack heights or depths.
A amplified
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 29
3.3.1
Base Plate Pipe Outlet Location & Dimensions
The locations of the pipe inlets and outlets on the unit base plate are shown in Figure 3-3 and corresponding
dimensions of the base plate pipe outlet are tabulated in Table 3-3.
Figure 3-3 Base Plate Location for Pipe Outlets
Table 3-3 Dimensions of Base Plate Pipe Outlet (mm/inch)
UNIT BOTTOM CONNECTIONS
CRD10
RLT
Refrigerant Liquid Line Inlet
1/2" O.D. Copper
RGT
Refrigerant Gas Line Outlet
5/8" O.D. Copper
CPT
Condensate Pump
NPT 1/2"(Rc1/2”) Female copper threaded joint
CGT
Condensate Gravity
NPT 1/2" (Rc1/2”) Female copper threaded joint
HVT
High Voltage Bottom Connection
Combination Knockout
1-1/8" (29 mm)
LVT
Low Voltage Bottom Connection
Knockout Hole Diameter
7/8" (22 mm)
NOTE: NPT threaded joint is for UL model, Rc threaded joint is for CE model.
256mm
[10 1/16”]
RGT
RLT
HVT
LVT
CGT
CPT
54mm
[2 1/16”]
295mm
[11 9/16”]
132mm
[5 3/16”]
118mm
[4 5/8”]
101mm
[3 15/16”]
219mm
[8 5/8”]
260mm
[10 1/4”]
51mm
[2”]
98mm
[3 3/16”]
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 30
3.3.2
Top plate pipe outlet Locations & Dimensions
The locations of the pipe inlets and outlets on the unit top plate are shown in Figure 3-4 and corresponding
dimensions of the top plate pipe outlet are tabulated in Table 3-4.
Figure 3-4 Top Plate Locations for Pipe Outlets
Table 3-4 Dimension of Top Plate Pipe Outlet (mm/inch)
UNIT TOP CONNECTIONS
CRD10
RLT
Refrigerant Liquid Line Inlet
1/2" O.D. Copper Sweat
RGT
Refrigerant Gas Line Outlet
5/8" O.D. Copper Sweat
CPT
Condensate Pump
NPT 1/2" (Rc1/2”) Female copper threaded joint
HVT
High Voltage Top Connection
Combination Knockout
1-1/8" (29 mm)
LVT
Low Voltage Top Connection
Knockout Hole Diameter
7/8" (22 mm)
NOTE: NPT threaded joint is for UL model, Rc threaded joint is for CE model.
180mm
[7 1/16”]
140mm
[5 1/2”]
105mm
[4 1/8”]
102mm
[4”]
HVT
RGT
RLT
CPT
356mm
[14”]
276mm
[10 7/8”]
233mm
[9 3/16”]
198mm
[7 3/4”]
LVT
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 31
3.3.3
Front Air outlet Locations and Dimensions
The location and dimensions of the air outlet at the front are shown in Figure 3-5.
Figure 3-5 Front Air Outlet Locations & Dimensions
300mm
[11.8in.]
250mm
[9.8in.]
1895mm
[74.6in.]
2000mm
[78.7in.]
Mechanical Installation
Vertiv | Liebert CRD10 | User Manual 32
3.4 Top frame and front frame
The CRD10 unit can be optionally field configured with a top frame and a front frame. The top frame and front
frame are installed as follows.
3.4.1
Top frame installation without front frame
The 267×1132mm (10.5×44.6in.) specification top frame installation does not require the front frame to be
installed, and the top frame can be directly installed. The installation method is as follows in figure 3-6.
Figure 3-6 Top frame installation without front frame
3.4.2
Top frame installation with front frame
When installing the 267×1232mm (10.5×48.5in.) specification top frame, the front frame needs to be
installed at the same time. The installation method is as shown in figure 3-7. The door is linked to the cabinet
by hinges, and the display and foot rail is fixed with screws. To remove them, pull out the hinges and loosen the
screw.
Screw (M12×30) ×4
Step1: Install the top frame
and fixed it with M12×30
screws(4PCS).
Step2: Move the V logo to
the top frame.
A
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Vertiv | Liebert CRD10 | User Manual 33
Figure 3-7 Top frame installation with front frame
Step1: Remove front door, display and
foot rail from the unit.
Step2: Fix front frame with M5×12 screws(10PCS). And
fix the top frame with M12×30(4PCS) as well. Then
install back the front door, display and foot rail.
Screw(M12×30) ×4
Screw(M5×12) ×10
Step3: Move the V logo to the
top frame.
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Vertiv | Liebert CRD10 | User Manual 34
3.5 System Installation Layout
The installation modes of the CRD10 unit are shown in Figure 3-8 and 3-9.
Figure 3-8 Condenser is Placed Higher than the Compressors during Installation
In Figure 3-8, the condenser is installed higher than the compressor. Therefore, an inverted trap is fitted to the
discharge line and the liquid line of the condenser. The inverted trap is essential as it helps prevent the liquid
refrigerant from flowing back once the condenser stops. The top end of the inverted trap must be installed
higher than the ultimate level of the copper pipe of the condenser. Recommended the minimum height
difference is 150mm (5.9in.). A trap must be installed every 7.5m(24.6ft.) of the vertical discharge line.
However, if the condenser is installed lower than the compressor, then no modification is required. Figure 3-9
shows the schematic diagram of system installation when the condenser is installed at a lower level than the
compressor. If using low ambient kit when mounting condenser below level of the indoor unit, the allowable
height refers to Table 3-5.
Figure 3-9 The Condenser is Lower than the Compressor during Installation
Max.30m(98.4ft.)
Outdoor unit
Inverted trap (must higher than the highest copper pipe of the condenser)
Liquid line (avoid exposure to direct sunlight)
Trap
Slope discharge
Indoor unit
Raised floor
Condensed
water
Heat insulation floor
Floor
Sealed
Max.7.5m(24.6ft.)
Slope
discharge
Sealed
Slope liquid
Outdoor unit
Max.8m(26.2ft.)
Heat insulation floor
Floor
Condensed
water
Raised floor
Indoor unit
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Vertiv | Liebert CRD10 | User Manual 35
Table 3-5 shows the allowable vertical distance between condenser and indoor unit.
Table 3-5 Vertical Distance between Condenser and Indoor Unit
Positioning of the Outdoor Unit
Height
Outdoor unit is higher than the
Indoor unit
Maximum: +30m (98.4ft.)
Outdoor unit is lower than the
indoor unit
Maximum: -8m (-26.2ft.)
Outdoor unit with Low
Ambient Kit is lower
than the indoor unit
Piping Equivalent
Length m(ft.)
10(33)
15(49)
30(99)
45(147)
60(197)
75(246)
91(300)
Max. Height m(ft.)
-5(-16)
-4.7(-15)
-3.7(-12)
-2.8(-9)
-1.9(-6)
-1(-3)
0(0)
3.6 Installation Procedures
The CRD10 models of air conditioners are used between racks and one side of it is adjacent to the server
cabinet. The CRD10 models of air conditioners are targeted for small-and-medium data centers,
computer rooms, and similar systems.
3.6.1
Leveling the Cabinet
Once all the components of the cabinet have been installed, level the cabinet. The following section is a
step-by- step illustration of the process of leveling the cabinet.
1. Place the cabinet at the desired location (preferably an open ground). Use a movable wrench to
loosen the fixing nuts on the four foot bolts in a clockwise direction.
2. Rotate the hexagonal bolts at the bottom of the feet in the clockwise or counterclockwise direction
until the feet rise or fall to a suitable position. Use a gradient measuring tool to ensure that the cabinet
is in a uniform level state. Refer to the Figure 3-10 to understand the process better.
Figure 3-10 Leveling the Cabinet
Clockwise
Counter clockwise
or clockwise
The feet rise
or drop
Fixing nut
Hexagonal nut
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Vertiv | Liebert CRD10 | User Manual 36
3. Screw down the fixing nuts on the feet bolts counter-clockwise and the leveling gets completed. If the
machine room has a mounting bracket, and its width does not exceed 30mm, remove the feet and fix
the cabinet onto the mounting bracket.
3.6.2
Removing the Feet and Fixing the Cabinet
NOTE: Before removing the feet and eventually fixing the cabinet, it is vital that 2 Technicians will be
required for this operation to avoid personal injury and cabinet damage.
Follow the instructions to remove the feet and fixing the cabinet;
•
Removing the feet: Use a movable wrench to loosen the fixing nuts on the four feet bolts in a
clockwise direction. Rotate the hexagon bolts at the bottom of the feet clockwise until the feet drops
from the cabinet frames.
•
Fixing the cabinet: As shown in Figure 3-11, the cabinet provides two holes (diameter: 13.5 mm) on top,
bottom, front and rear respectively.
Figure 3-11 Fixing Holes of the Cabinet
Top fixing hole
Top fixing hole
Bottom fixing hole
Bottom fixing hole
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Vertiv | Liebert CRD10 | User Manual 37
Install bolts in the four holes at the bottom to fix the cabinet onto the floor bracket of the equipment
room. Install bolts in the four holes at the top to fix the cabinet to connect the cabinet with the top
bracket of the machine room.
3.7 Cabinet Connection
The cabinet connectors come along with the accessories. Connect the unit with adjacent cabinets using
the cabinet connectors. Refer the following procedures for connecting the cabinet.
NOTE: Before connecting the cabinet, level the cabinet as mentioned in the earlier section (for more
details, refer to section 3.6.1 “Leveling the Cabinet”).
1. Loosen the fixing screw of the cabinet connector on the frame of the cabinet. Rotate the cabinet
connector to 90° horizontally. Use M5 countersunk head screws to fix it on the cabinet frame (side of
the door lock) as shown in Figure 3-12.
Figure 3-12 Rotating the Cabinet Connector
2. Use the M5 countersunk head screws to fix the cabinet connector (L-shaped) in the installation holes
of the cabinet frame (side of the hinge) and rack frame adjacent to the cabinet as shown in Figure 3-13.
Figure 3-13 Schematic Diagram for Connecting the Cabinet
3. Repeat step 1 and 2 to Install the other 6 cabinet connectors based on the same method.
Cabinet connector
Cabinet
connector
A
Mounting screw M5×12
Cabinet connector
A amplified
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Vertiv | Liebert CRD10 | User Manual 38
3.7.1
Piping Connections
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of
high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or
death. This unit contains fluids and gases under high pressure. Use extreme caution when charging
the refrigerant system. Do not pressurize the system higher than the design pressure marked on the
unit's nameplate.
The pipes to be included in the piping process of the AC are listed below:
• Condensed water drainage pipe of the indoor unit
• Connection of the copper pipe (discharge pipe and liquid pipe) between the indoor unit and outdoor unit
• Liquid line solenoid valve kit
NOTES:
• On-site pipeline connection must be completed by qualified technician.
• On-site pipeline connection must comply with local regulations, such as ASHRAE 15, CSA B52 and local
construction laws.
• Pipeline welding will cause overheating of the pipeline and open flame. If the installation environment
does not allow, installation is prohibited. The installation environment must be free of combustible
materials to avoid fire.
The following points need to be taken into consideration during the piping process:
• All the joints of the refrigerating pipes must be silver-brazed.
• Use a flow of dry nitrogen through the piping during brazing to prevent formation of copper oxide
scale inside the piping. When copper is heated in the presence of air, copper oxide forms. PVE oils will
dissolve these oxides from inside the copper pipes and deposit them throughout the system, clogging
filter driers and affecting other system components.
• A pure dry nitrogen flow of 1-3 ft3/min (0.5-1.5 l/s) inside the pipe during brazing is sufficient to
displace the air. Control the flow using a suitable measuring device.
• The selection, layout, and fixing of the pipes must conform to the industry standards and norms.
• Vacuum pumping and refrigerant charging operations, and procedures must conform to the industry
standards.
• Pressure drop, compressor oil return, noise return, and vibration must be considered during the
designing and installation process.
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Vertiv | Liebert CRD10 | User Manual 39
3.7.2
Removing Filters
Before the connection of the pipes in the indoor unit, the filters need to be removed:
1. Open the rear door of the cabinet to reveal the 2 filters, namely- the top and bottom filters.
2. Next, proceed to remove the fixing flake of the top filter. Before the fixing flake is removed, the screws of the flake must
be loosened. Then, remove the fixing flake, followed by removing the top filter.
3. Repeat step 1-2 to remove the bottom filter. Figure 3-14 shows the fixing flake of the filters.
Figure 3-14 Removing the Filters
3.7.3
Connecting the Condensate Drainage Pipe of the Indoor Unit
The condensed water of the evaporator converges to a common water tray further which is drained through
the drainage pipe of the drain pump.
1. The unit is configured to adopt the top drain mode by default; therefore, connect the drainage pipe of the pump
upwards to the top drainage copper pipe.
2. Fix the drainage pipe to the drainage pipe connector with the hose clamps available in the shipped accessories. The
torque of the hose clamp is 15kg·cm (13lb·in.).
3. Connect the drainage pipe to the drainage hole on the top of the cabinet.
4. To drain water from the bottom, direct the rubber drainage hose of gravity through the drainage hole. Or
connect the rubber drainage hose in accessory with the outlet of pump, and direct it through the bottom
drainage hole. When applying the gravity drainage, also applying pump drainage from bottom is
recommended, otherwise, disable the pump function from HMI display.
5. Fix the pipe with the hose clamp to the copper pipe connector. Moving forward, connect it to the outer drainage pipe.
Fixing flake of the filter
Fixing flake of the filter
A
B
A amplified
B amplified
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Vertiv | Liebert CRD10 | User Manual 40
6. Table 3-6 provides a details of piping connection of water drainage pipe with condensate pump.
Table 3-6 Standards for Water Drainage Pipe and Condensate Pump
Connection
UL Model
CE Model
Water Drainage pipe with Condensate Pump
NPT 1/2 Female
Rc 1/2 Female
The outer diameter of the copper pipe is 12.7mm/0.5”, the internal diameter of the rubber drain hose of
condensate gravity and pump are 16mm/0.6”and 9mm/0.35” respectively. However, the rubber hose is
equipped with threaded joint which has the same interface diameter 12.7mm/0.5”. If using condensate gravity
rather than pump, the rubber drain hose of the water tray should pass through the drainage hole of the tray
and connect to the outer drainage pipe. The ‘Trap’ is essential to drain the condensate water.
NOTES: The following points are to be taken into consideration about the trap:
• Adopt a galvanized steel, PVC, or polyethylene pipe with a fair amount of flexibility.
• Allow a tilt of 2° towards the direction of the drainage flow.
The trap is mandatory and should be located 300mm (11.8”) below the water tray. The trap must be kept
under the raised floor as shown in Figure 3-15.
Figure 3-15 Process of Draining the Condensate Water
NOTES:
• Don’t cut off the brackets of the trap lest affecting the drainage.
• Filling the trap with water to avoid blowing water before the unit is powered on.
• Use a Teflon tape between the flexible pipes and connector to avoid water leakage.
Fill water in the trap
Bracket 2 pieces
Water Tray
Min.200mm[7.9in.]
Trap
Min.100mm[3.9in.]
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Vertiv | Liebert CRD10 | User Manual 41
Figure 3-16 Connection of Drainage Pipes
3.7.4
Connecting the Copper Pipes between the Indoor and Outdoor Unit
The indoor and outdoor units are connected through the silver-brazed copper pipes. Piping must be type ACR
copper tubing, Table 3-7 shows the standard pipe diameters for connection between the indoor unit and the
remote condenser. The pipe diameter of the indoor unit and outdoor unit should be determined by the
specifications mentioned in Table 3-7, taking into account the effect of the pipe diameter on the system
pressure drop. Alternatively, consult Vertiv technician for details.
Table 3-7 Recommended Refrigerant Line Sizes
Model
CRD10
Pipe length L (m(ft.))
External Diameter x Pipe Thickness mm(in.)
Discharge pipe
Liquid pipe
0 < L≤40(131.2)
16(5/8) x 1(0.04)
12.7(1/2) x 1(0.04)
40(131.2) < L≤91(300.0)
18(3/4) x 1(0.04)
16(5/8) x 1(0.04)
NOTE: Pipe length = Actual length + Equivalent Length of Partial Components
Recommended equivalent length of the partial components for the different pipe diameters which also
include resistance loss from the elbow joints are listed in Table 3-8. Before installation, make a choice
Drainage hole of pump
Drainage hole
Liquid pipe hole
Discharge pipe hole
Cable hole
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Vertiv | Liebert CRD10 | User Manual 42
according to site condition.
Table 3-8 Equivalent Length of Partial Components
Liquid pipe,
External Diameter x Pipe Thickness mm(in.)
Equivalent length (m(ft.))
90° bend
45° bend
T Type 3-way
12.7 (1/2) x 1(0.04)
0.5 (1.64)
0.25(0.82)
0.76 (2.49)
16 (5/8) x 1(0.04)
0.55 (1.8)
0.27 (0.88)
0.76 (2.49)
18 (3/4) x 1(0.04)
0.6 (1.96)
0.3 (0.98)
0.76 (2.49)
22.2 (7/8) x 1.2(0.05)
0.7 (2.29)
0.35 (1.14)
1.1 (3.6)
As shown in Figure 3-17 and 3-18, the unit has refrigerated pipe connectors and labels on top and bottom.
Don’t burn the labels during brazing. These labels assist and point out the connections to the discharge pipe
and liquid pipe of the indoor unit. The horizontal sections of the discharge pipes must be tilted downwards
from the compressor with a slope of at least 1:200 (5mm down for every 1m run). The discharge pipes must
be insulated from heat at the location where they are routed in the conditioned space (including the raised
floor).
Figure 3-17 Top Pipe Connectors
Figure 3-18 Bottom Pipe Connectors
Drainage hole
Liquid pipe hole
Discharge pipe hole
Cable hole
Drainage hole
Discharge pipe hole
Liquid pipe hole
Cable hole
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Vertiv | Liebert CRD10 | User Manual 43
NOTES:
• For bottom piping, before brazing the compressor discharge pipe and liquid pipe, follow the
requirement labeled on the copper pipe; cut the copper pipe using a cutter (a little bit of the compressor
lubricating oil may leak); however, do not braze-weld the copper cap on the seal directly as it may result
in heating of the oil following that may catch fire.
• The exposure time of the system pipes should not exceed 15 minutes. If exposed for too long, it will
lead to the PVE refrigeration oil absorbing moisture from the air and contaminating the refrigerant
system. It may result in an adverse effect on the life of the key components and the stability of the
system operation.
3.8 Installing Liquid Line Solenoid Valve Kit and Low Ambient Kit
3.8.1
Installing Solenoid valve Kit (for site installation)
In order to prevent the opening of the pipe, it is recommended that the solenoid valve be installed outside
the ball valve of the liquid pipe. After the entire system is installed, open the ball valve to keep the pressure
and carry out the vacuum operation, thereby avoiding the moisture absorption of the compressor
refrigeration oil. Thus, it accounts for operational safety and also extends the service life of the compressor
(for electrical connections related to the solenoid kit, refer to Chapter 4- ‘Electrical Installation’).
NOTE: The solenoid valve is a standard accessory and it needs to be installed for all installations. The
solenoid valve is recommended to be installed horizontally, and the valve body must be upward.
Following is the procedure for installing the solenoid valve in the liquid pipe:
1. The solenoid valve needs to be installed to the liquid pipe. The solenoid valve must be as close to the
indoor unit as possible, and the distance from the solenoid valve to the indoor unit pipe does not
exceed 2m(6.6ft.), as shown in Figure 3-19. The valve body and coil of the solenoid valve are
separated when the valve is shipped out.
Figure 3-19 Installation position of Solenoid valve and pipe dimensions
Condenser
CRV
Solenoid Valve
Indoor
Outdoor
Hot Gas pipeline
Refrigerant flow
16mm(5/8in.) or
18mm(3/4in.)
According to Table3-6
12.7mm(1/2in.) or
16mm(5/8in.)
According to Table3-6
Max 2m
(6.6ft.)
Liquid pipeline
Refrigerant flow
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Vertiv | Liebert CRD10 | User Manual 44
2. Mount the valve body horizontally in the refrigerant pipe as shown in Figure 3-20. Pay attention to the
arrow on the valve body as the arrow indicates the flow direction of the refrigerant in the valve. Ensure
that the arrow points towards the indoor unit. The connection pipe diameter of the valve body is
12mm(1/2inch).
Figure 3-20 Installing the Solenoid Valve Horizontally
3. After brazing, install the coil and the wiring terminals. Figure 3-21 shows the process of connecting the
cables and coil of the solenoid valve.
Figure 3-21 Install the coil of the Solenoid Valve
4. Finally, as shown in Figure 3-22, clip the valve body coil, press the coil tightly to ensure full contact
between the coil and valve body.
Figure 3-22 Fixing the Coil
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Vertiv | Liebert CRD10 | User Manual 45
3.8.2
Installing Low Ambient Kit(for site installation)
The Low Ambient Kit consists of liquid receiver (with electric heater for outdoor installations), check valve,
head pressure valve to bypass the condenser. When Low Ambient Kit is a part of the system, figure 3-23
shows the installation position. The Low Ambient Kit is installed with the condenser, for the detailed
installing instruction, please refer to the CCD10 condenser user manual.
Figure 3-23 Installation position of Low Ambient Kit and pipe dimensions
Condenser
CRV
Head Pressure Valve
(head pressure valve to
bypass the condenser)
NRV
Liquid receiver
(with electric
heater for
outdoor
installations)
Solenoid Valve
Indoor
Outdoor
Hot Gas pipeline
Safety Valve
Pressure Switch
Refrigerant flow
16mm(5/8in.) or
18mm(3/4in.)
According to Table3-6
12.7mm(1/2in.) or
16mm(5/8in.)
According to Table3-6
12.7mm(1/2in.)
Max 2m
(6.6ft.)
Liquid pipeline
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Vertiv | Liebert CRD10 | User Manual 46
3.9 Recommended Refrigerant and Oil Charging Amount of the
System
WARNING! Risk of over-pressurization of the refrigeration system. Can cause explosive discharge of
high-pressure refrigerant, loss of refrigerant, environmental pollution, equipment damage, injury, or
death. This unit contains fluids and gases under high pressure. Use extreme caution when charging
the refrigerant system. Do not pressurize the system higher than the design pressure marked on the
unit's nameplate.
NOTICE!
Risk of oil contamination with water. Can cause equipment damage.
Liebert® CRV systems require the use of PVE (FV50S) oil. PVE oil absorbs water at a much faster rate
when exposed to air than previously used oils. Because water is the enemy of a reliable refrigeration
system, extreme care must be used when opening systems during installation or service. If water is
absorbed into the PVE oil, it will not be easily removed and will not be removed through the normal
evacuation process. If the oil is too wet, it may require an oil change. PVE oils also have a property
that makes them act as a solvent in a refrigeration system. Maintaining system cleanliness is
extremely important because the oil will tend to bring any foreign matter back to the compressor.
NOTICE!
Risk of improper refrigerant charging. Can cause equipment damage.
Refrigerant charge must be weighed into air-cooled compressorized systems before they are started.
Starting compressors without proper refrigerant charging can cause the compressors to operate at
less than 5°F (–15°C) evaporator temperature and at less than 20 psig (138 kPa). Operation for
extended periods at less than 20 psig (138 kPa) can cause premature compressor failure.
The Liebert CRD10 comes with pre-charged 2 bar of Nitrogen in the factory. Discharge the nitrogen before
plugs unsoldering. The users can determine the charging amount of the refrigerant according to the system
configuration and the length of the connection pipes between the indoor and outdoor unit. Table 3-9
represents the recommended refrigerant and oil charging amount of the CRD10 unit.
Table 3-9 Refrigerant and Oil Charging Amount
Model
Base
refrigerant
charging
without
Low
Ambient Kit
(kg/lb)
Base
refrigerant
charging
with
Low
Ambient Kit
(kg/lb)
Base
refrigerant oil
charging with
Low Ambient
Kit
Fluid ounces
(ml/oz)
Additional
Refrigerant oil
charging
(ml/oz)
Total
refrigerant
charging
(kg/lb)
CRD10+CCD100S/CCD101S
4.1/9.0
9.0/19.8
1000/33.8
b
c
The refrigeration oil used in the CRD10 air conditioner is PVE (FV50S). The refilled refrigerant dilutes the PVE
oil in the system and plays a major role in the lubrication and cooling effect of the PVE oil. Therefore, the
refrigerant oil must be extra added for this reason.
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Vertiv | Liebert CRD10 | User Manual 47
when the liquid pipe length of the connection between the indoor unit and the outdoor unit is shorter than
30m(98.4ft.), and the system is not equipped with Low Ambient Kit, then the additional refrigerant oil
charging is not needed, alternatively, the base refrigerant oil charging is 1000ml(33.8oz). when the liquid
pipe length of the connection between the indoor unit and the outdoor unit is longer than 30m(98.4ft.), the
extra additional refrigerant oil charging is b ml/oz. The filling amount of the extra additional refrigerant oil(b)
is calculated using the following formula:
The filling amount of the refrigerant is calculated using the following formula:
Table 3-10 Refrigerant charge required per meter (foot) of liquid pipe
Liquid Pipe Diameter ×Thickness (mm(in.))
Unit length refrigerant addition amount (kg/m(lb/ft))
12.7(1/2)×1(0.04)
0.107/0.0719
16(5/8)×1(0.04)
0.145/0.0974
If the liquid pipe length of the connection between the indoor unit and the outdoor unit is shorter than
10m(32.8ft.), the refrigerant is charged according to the base refrigerant charge. Table 3-11 is the quick
check list of refrigerant and oil filling amount.
NOTES:
• The unit has been added 1270ml of basic refrigerant oil in factory. So the installation site only needs to
charge with an additional mount of refrigerant oil b ml(oz) when without Low Ambient Kit, if equipped
with Low Ambient Kit, the oil charging amount is 1000ml(33.8oz) + b ml(oz).
• The unit did not charge with refrigerant in the factory, and the total amount of refrigerant c kg(lb)
needs to be charged on site installation.
• Refill the oil from the schrader valve of the liquid pipe ball valve.
• Select the right make and type of refrigeration oil depending on the model. Do not use poor quality
refrigeration oil as it can damage the system.
• If any error or damage occurs due to usage of the incorrect make and type of oil, the warranty will be
void.
Value
b
(ml) = Refrigerant filling amount of per meter liquid pipe (kg/m) × [ Total length of liquid pipe (m)-
30m] ×1000 ×25%
Value
b
(oz) = Refrigerant filling amount of per meter liquid pipe (lb/ft) × [ Total length of liquid pipe (ft)-
98.4ft] ×3.84
Refrigerant filling amount
c
(kg) = Base Refrigerant Charge(kg) + Refrigerant filling amount of per meter
liquid pipe (kg/m) × [ Total length of liquid pipe (m)-10(m)]
Refrigerant filling amount
c
(lb) = Base Refrigerant Charge(lb) + Refrigerant filling amount of per meter
liquid pipe (lb/ft) × [ Total length of liquid pipe (ft)-32.8(ft)]
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Vertiv | Liebert CRD10 | User Manual 48
Table 3-11 Quick check list of refrigerant and oil filling amount
Liquid
Pipe
Length
(m)
Total Refrigerant filling
amount
Additional Oil filling
amount
Liquid
Pipe
Length
(ft)
Total Refrigerant
filling amount
Additional Oil filling
amount
without
Low
Ambient
Kit
(kg)
With
Low
Ambient
Kit
(kg)
Without
Low
Ambient
Kit
(ml)
With
Low
Ambient
Kit
(ml)
without
Low
Ambien
t Kit
(lb)
with
Low
Ambient
Kit
(lb)
without
Low
Ambient
Kit
(oz)
with
Low
Ambient
Kit
(oz)
≤10
4.1
9.0
-
1000
≤32.8
9.0
19.8
-
33.8
15
4.6
9.5
-
1000
45
9.9
20.7
-
33.8
20
5.2
10.1
-
1000
60
11.0
21.8
-
33.8
25
5.7
10.6
-
1000
75
12.0
22.8
-
33.8
30
6.2
11.1
-
1000
98.4
13.7
24.5
-
33.8
35
6.8
11.7
134
1134
120
15.3
26.1
6.0
39.8
40
7.3
12.2
268
1268
131.2
16.1
26.9
9.1
42.9
45
9.2
14.1
544
1544
150
20.4
31.2
19.3
53.1
50
9.9
14.8
725
1725
165
21.9
32.7
24.9
58.7
55
10.6
15.5
906
1906
180
23.3
34.1
30.5
64.3
60
11.4
16.3
1088
2088
195
24.8
35.6
36.1
69.9
65
12.1
17.0
1269
2269
210
26.3
37.1
41.7
75.5
70
12.8
17.7
1450
2450
225
27.7
38.5
47.4
81.2
75
13.5
18.4
1631
2631
240
29.2
40.0
53.0
86.8
80
14.3
19.2
1813
2813
255
30.6
41.4
58.6
92.4
85
15.0
19.9
1994
2994
270
32.1
42.9
64.2
98.0
91
15.8
20.7
2211
3211
285
33.6
44.4
69.8
103.6
\
\
\
\
\
300
35.0
45.8
75.4
109.2
NOTE: “-” represents no need to fill oil.
3.10 Adjusting the Supply Air Baffle and Sealing the Holes
3.10.1
Adjusting the supply air baffle
Adjust the installation direction of the supply air baffle to lead wind to the left or right depending on the
installation location of the Liebert CRD10 models air conditioners. The supply air baffle is composed of
several pieces. Remove the screws on both sides of the single piece of the supply air baffle, rotate it by 180°.
Install it back to change the wind direction. Figure 3-24 shows the mounting screws of a single piece of the
supply air baffle.
Figure 3-24 Fixed Mode of the Supply Air Baffle
M5 screw
(8 PCS)
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Vertiv | Liebert CRD10 | User Manual 49
3.10.2
Sealing the Holes of the Top Plate of the Cabinet
Holes are reserved at the top of the cabinet to facilitate smooth on-site installation as well as the
connection of the rack on the top of the machine room. Use rubber plugs and bolts to seal the remaining
holes after the cabinet is installed on the site. Use M13.5 rubber plugs to seal four holes at the top of the
cabinet and M12x30 bolts to seal 8 holes at the top plate of the cabinet. This prevents water from entering
the cabinet. Figure 3-25 depicts the schematic diagram of sealing the holes on the top plate of the cabinet.
Use the provided four M13.5 rubber plugs to seal the holes. Use the provided eight M12x30 bolts to seal the
holes.
Figure 3-25 Sealing the Top Holes of the Cabinet
Use the provided four M13.5 rubber plugs to seal the holes
Use the provided eight M12×30 bolt plugs to seal the holes
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Vertiv | Liebert CRD10 | User Manual 50
3.11 Checklist for Completed Mechanical Installation
Following are the points in the checklist (refer Table 3-12) that need to be verified and confirmed to ensure
mechanical installation was implemented successfully.
Table 3-12 Mechanical Installation Checklist
Item
Result
Sufficient space is kept for maintenance, according to the user manual
The equipment is placed vertically and mounting fasteners are fastened
The pipes between the indoor unit and outdoor unit are completed. The ball valves of the indoor
unit and outdoor unit are fully opened
The wind direction of the wind-leading grill has been adjusted (if required)
Drainage pipe is connected
All pipe connectors are tight
The fasteners used for transportation have been removed
After installation, foreign materials in and around the equipment are removed (such as
shipping materials, construction materials, tools, and so on)
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Chapter 4: Electrical Installation
In this chapter, the electrical installation of the CRD10 air cooled units is explained in-depth to help users
with the various tasks that include the cable connections of the indoor unit apart from the checklist. The air
conditioners of the Liebert CRD10 models are the professional devices used in industrial, commercial, or
other professional occasions. It is not tailored for the general public. A port of greater than a 350 short-
circuit-ratio is required between the user power and the grid. Permission is required from the power supply
department to ensure that the air conditioner is connected to a power greater than 350 short-circuit-ratio.
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply
disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved
personal protective equipment (PPE) per NFPA 70E before working within the electric control
enclosure. Failure to comply can cause serious injury or death. Customer must provide earth ground
to unit, per NEC, CEC and local codes, as applicable. Before proceeding with installation, read all
instructions, verify that all the parts are included and check the nameplate to be sure the voltage
matches available utility power. The Liebert® controller does not isolate power from the unit, even in
the “Unit Off” mode. Some internal components require and receive power even during the “Unit Off”
mode of the controller. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic. Follow all local codes.
WARNING! Risk of improper wire sizing/rating and loose electrical connections. Can cause overheated
wire and electrical connection terminals resulting in smoke, fire, equipment and building damage,
injury or death. Use correctly sized copper wire only and verify that all electrical connections are tight
before turning power On. Check all electrical connections periodically and tighten as necessary.
NOTICE!
Risk of improper power-supply connection. Can cause equipment damage and loss of warranty
coverage.
Prior to connecting any equipment to a main or alternate power source (for example: back-up
generator systems) for start-up, commissioning, testing, or normal operation, ensure that these
sources are correctly adjusted to the nameplate voltage and frequency of all equipment to be
connected. In general, power-source voltages should be stabilized and regulated to within ±10% of the
load nameplate nominal voltage. Also, ensure that no three-phase sources are single-phased at any
time.
4.1 Installation Notes
1. The connections of all power cables, control cables, and ground cables should be in compliance with the
local and national electrical regulations.
2. Observe the unit nameplate for the full load current. The cables sizes must meet the conditions as
specified in the local wiring protocols and rules.
3. The power supply of the unit must be consistent with the power supply specifications of the nameplate,
otherwise the unit will be damaged. Mains supply requirement:
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Vertiv | Liebert CRD10 | User Manual 52
Model
CRD100-0D00A
CRD101-0D00A
CRD102-1D00A
Power Supply
208/230V/1PH/60Hz
208/230V/3PH/60Hz
230V/1PH/50/60Hz
4. If the power cable is damaged, it must be replaced immediately to eliminate the dangers. The
replacement procedure must be carried out by an authorized professional or experienced service
personnel.
5. The electrical installation and maintenance must be carried out by some authorized personnel or a
trained engineer well-versed with the inner workings of the electrical connection.
6. Prior to the wiring, a voltmeter must be used to measure the power supply voltage and ensure that the
power supply is switched off.
7. Use screws, guide rails, or other modes to fix the device firmly during the installation process to avoid
the movement or shaking during the start-up or operation mode.
8. For the air conditioner configured with EC fans, the unit power grid adheres to the TN or TT star
connection power distribution system. However, contact Vertiv if there is a need to configure another
type of power grid.
9. A rated circuit breaker shall be provided to be disconnected from power supply.
10. SCCR (Short-Circuit Current Rating) of the CRD10 air cooled unit - 6kA (CE Model), or 10kA (UL Model).
4.2 CRD10 Wiring Connections
Followings are the intricate cable connections to all the critical components inside the CRD10 unit:
1. Power cable and control cabinet of the indoor unit
2. Solenoid valve cable of the liquid line solenoid valve kit
3. Low Ambient Kit power cable from indoor to outdoor (if configured)
4. Input and output control cable of the unit
4.2.1
Power Cable and Control Cabinet of the Indoor unit
This section deals with the different types of connections related to the indoor unit, namely–
1. Electrical port location of the indoor unit
2. Connecting the Power cables of the indoor unit
3. Connecting the Control cables
4. Connecting the Solenoid valve of the liquid line solenoid valve kit
5. Confirm the transformer connection cable according to voltage of power supply
6. Connecting the outdoor unit and the indoor unit
7. Teamwork Control
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4.2.2
Electrical Port location of the indoor unit
For any model of the CRD 10kW, open the rear door of the indoor unit following which the specific layout
and locations of the low voltage components can be viewed as shown in Figure 4-1, such as the dual power
supply input breaker, outdoor breaker and terminal blocks. For detailed layout information on low voltage
components, refer to the labels on the cabinets and units.
Single-phase unit
Three-phase unit
Figure 4-1 Unit Electrical Control Box and Cable Connection (open the back door 120°)
A
A amplified
A
A amplified
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Vertiv | Liebert CRD10 | User Manual 54
Table 4-1 MCB Current Rating
Model
MCB
Current
(A)
CRD100-0D00A
NDB2-63C40/2
40
CRD101-0D00A
NDB2-63C25/3
25
CRD102-1D00A
NDM1-63C50/2
50
4.2.3
Connecting the Power Cable of the Indoor unit
The specific location of the power port of the indoor unit is shown in Figure 4-1. Connect the supply
terminals L, N (or L1, L2 or L1, L2, L3) and PE (or G) supply terminal to their respective counterparts of the
external power supply respectively. Fix the input cables to the cable clamp, located on the inner side panel
of the unit. The top cable entry hole and bottom cable entry hole are shown in Figure 4-2. For the cable
specifications, refer to the Full-Load Current (FLA), MCA, MOP described in the Table 4-2.
Figure 4-2 Top and Bottom Cable Entry Holes
The cable sizes must strictly meet and adhere to the local wiring regulations and protocols as it supersedes
every type of connection.
Table 4-2 Full Load Current (Unit A)
Region
UL
CE
Model
CRD100-0D00A
CRD101-0D00A
CRD102-1D00A
Full load Current (A)
-
-
38 (With the heater)
28 (Without the heater)
MCA (A)
29
21
-
MOP (A)
40
30
-
Top cable entry holes
Bottom cable entry holes
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4.2.4
Connecting the Power Cable of the outdoor unit
The outdoor unit (CCD10) is controlled by indoor unit, the specific location of the power port of the outdoor
unit is also shown in Figure 4-1. Connect the outdoor breaker terminals L, N (or L1, L2) and PE (or G) to their
respective counterparts of the outdoor respectively. The detailed specification of cable, please refer to
CCD10 user manual.
4.3 Connection of the Control Cables
The location of the terminal block for cable connections in the site is shown in Figure 4-1. The amplified view
of the terminals is shown in Figure 4-3.
(UL) (CE)
Figure 4-3 Amplified View of Terminal
NOTE: The connection personnel must take anti-static measures before connecting the control cables.
4.3.1
Water-Under-Floor Sensor
NOTICE!
Risk of clogged or leaking drain lines and leaking water-supply lines. Can cause equipment and
building damage.
This unit requires a water drain connection. Drain lines must be inspected at start-up and periodically,
and maintenance must be performed to ensure that drain water runs freely through the drain system
and that lines are clear and free of obstructions and in good condition with no visible sign of damage
or leaks. This unit may also require an external water supply to operate.
Improper installation, application and service practices can result in water leakage from the unit.
Water leakage can result in catastrophic and expensive building and equipment damage and loss of
critical data center equipment.
Do not locate unit directly above any equipment that could sustain water damage.
We recommend installing a monitored fluid-detection system to immediately discover and report
coolant-fluid system and condensate drain-line leaks.
The unit accessories are equipped with a water-under-floor sensor, connect one end of the sensor to
L3, L4/L3, N3: Low Ambient Kit Heating Belt
72, 73: LLSV
75, 76: Common Alarm
37, 38: Remote Shutdown
51, 24: Water Under Floor
CAN-1, CAN-2: CAN Communication
TB3: Rack Sensor
CAN1 CAN2
TB3
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terminal 51# and the other end to common terminal 24#. Each unit can be connected with multiple sensors
in parallel, but there would be only one water-underfloor alarm.
4.3.2
Solenoid Valve Kit
When installing the solenoid valve kit (LLSV), connect one end of the solenoid valve coil cable to terminal
72# and the other end to terminal 73#. Figure 4-4 shows the liquid line solenoid valve connection with the
respective terminals.
Figure 4-4 Freon Solenoid Connection with Terminal
4.3.3
Transformer connection cable
NOTICE!
CRD10 unit 96VA transformer default wiring is orange cable (230V to 24V). If the unit rated voltage is
208V, a properly trained and qualified electrician must change the transformer wiring from orange to
red cable (208V to 24V).
Figure 4-5 Transformer wiring diagram
Common Alarm
LLSV
Transformer
Transformer
BR
OR
R
WH
BK COM
BL
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4.3.4
Low Ambient Kit
If the unit is configured with Low Ambient Kit, which power supply is from indoor unit. Connect the cable of
Low Ambient Kit to terminal L3, L4 (or L3, N3).
4.3.5
Rack Sensor
Each unit comes standard with a remote temperature sensor, and it can be connected with a maximum of
10 temperature sensors. It is recommended that the sensors be located in front of the heat loads to achieve
the most precise temperature. If the sensors are connected in series (refer Figure 4-6), each temperature
sensor monitors the temperature of air entering each rack, and the read temperature value is used to
control unit operation. The standard location of the sensor is 1.5m(4.9ft.) height from the end of the unit
base. Therefore, the sensors should be placed in positions as shown in Figure 4-6, or the devices cannot
operate appropriately.
Figure 4-6 Layout of Rack Sensors
Following is the procedure to connect sensors for Liebert CRD 10kW model:
1. Insert the connector of the rack temperature sensor into the TB3 point. On connecting the cable, route
the cable through the top or bottom of the unit after which it should be connected to the first sensor.
Connect the first sensor to the second sensor. Thus, the sensors are connected in a series.
2. Fix the temperature in-front of the hottest source inside the rack. Do not fix it in-front of the empty sub-
rack. Affix the sensor on the rack surface using the magnets provided in the kit. The sensor must be fixed
in a position that is mostly short of cool air. Rack temperature sensor IRM-S01 address settings are
tabulated in the Table 4-3.
Sensor
1.5m
[4.9ft.]
1.5m
[4.9ft.]
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Table 4-3 Rack Temperature Sensor Address
Sensor
1
2
3
4
5
6
ID
Notations
Rack temperature 1
0
0
0
1
0
0
10
ON — “1”; OFF — “0”
Rack temperature 2
0
0
0
1
0
1
11
Rack temperature 3
0
0
0
1
1
0
12
Rack temperature 4
0
0
0
1
1
1
13
Rack temperature 5
0
0
1
0
0
0
20
Rack temperature 6
0
0
1
0
0
1
21
Rack temperature 7
0
0
1
0
1
0
22
Rack temperature 8
0
0
1
0
1
1
23
Rack temperature 9
0
0
1
1
0
0
30
Rack temperature 10
0
0
1
1
0
1
31
4.3.6
Remote Shutdown
As shown in Figure 4-4, terminals 37# and 38# can be connected to the remote shutdown switch. The terminals
must be shorted before delivery. If a remote shutdown signal is to be connected, remove the short-connect
cable.
NOTE: Opening the terminals 37# and 38# will shut down the unit.
4.3.7
External Common Alarm
Terminals 75# and 76# can be connected to the external common alarms. They provide signals to external
alarm devices such as an alarm indicator. When the critical alarm occurs, the contact will be closed to trigger
remote alarms, send signals to the building management system, or automatically dial the paging system. Users
have to obtain the power supply of external common alarm system. For an in-depth definition of the other
terminals, refer to the circuit schematic.
4.3.8
Teamwork Control
•
Teamwork function
Teamwork control has 4 functions, Standby function, Rotation function, Avoid fighting function and Cascade
function.
1. Standby function
One or several units can be defined as standby unit. The standby units’ fan run at a default speed of 20%. If
a running unit generates an alarm that cannot operate normally, a standby unit will start to run. The
“critical fault alarms” will cause the unit to go into standby. The “secondary fault alarms” unit will not
standby but continue running.
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Vertiv | Liebert CRD10 | User Manual 59
Following is the list of Critical and Secondary fault alarms:
1) Critical fault alarms: High pressure lock, Low pressure lock, High discharge temperature lock, Low
discharge superheat lock, Low pressure sensor fail lock, Compressor drive fail lock, Fan fail alarm
(Alarm process setting is shut down), Water underfloor alarm (Alarm process setting is shut down),
Power fail alarm (Alarm process setting is shut down).
2) Secondary fault alarms: High discharge temperature alarm, Air flow temperature sensor failure, Air
flow loss alarm, Discharge temperature sensor failure, Suction temperature sensor failure, Low
pressure sensor failure, EEV drive communication failure, Compressor drive communication failure,
Compressor temperature control sensors failure, Fan temperature control sensors failure, Power fail
alarm (Alarm process setting is fan only), High supply temperature alarm, High return temperature
alarm.
2. Rotation function
Rotation function is utilized to ensure that all the units have an equal run-time.
3. Avoid fighting function
Avoid units performing conflicting operations. For example: (a) units are not allowed to heat if other units
are cooling and vice versa, and (b) units are not allowed to humidify if other units are dehumidifying and
vice versa, so the master will calculate the number of cooling run unit and heat run unit, if the cooling run
unit number is bigger than heat run unit, so in the team group, it keep all the cooling unit run, and stop all
the heat unit. It is the same with humidify/dehumidify run unit.
4. Cascade function
If the run unit occur “High Temperature alarm”, then auto start a standby unit
•
Teamwork connection and setting
To use the teamwork control function, connect the communication cable to terminals CAN1 & CAN2 port on
the unit. The connection diagram as shown in Figure 4-7:
HMI Touch
HMI Touch
HMI Touch
HMI Touch
Controller
Controller
Controller
Controller
Master 0#
Slave 1#
Slave 2#
……
Slave 15#
CAN1
CAN2
CAN1
CAN2
CAN1
CAN2
CAN1
CAN2
CAN BUS
CAN BUS
CAN BUS
Figure 4-7 The connection diagram of the Teamwork Control
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Vertiv | Liebert CRD10 | User Manual 60
Master unit will share teamwork parameters, temperature and humidity set point, proportional band, dead
band, fan control mode, compressor control mode to the slave unit. Slave unit upload run status, alarm signs to
the master unit.
Unit with address 0 is defined as the master unit. Units with the non-zero address are defined as the slave units.
Teamwork parameters only can be set in master unit and share to the slave units. Slave units can only set their
own unit address. After the teamwork connection is completed, set the unit CAN ID through the DIP SW3 of the
PACC board. The address setting method is shown in the Figure 4-8 and Table 4-4.
Figure 4-8 Significance of the DIP SW3 position
This position is OFF
This position is ON
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Vertiv | Liebert CRD10 | User Manual 61
Table 4-4 Correspondence between unit CAN ID and DIP SW3 address
CAN ID
SW3-1
SW3-2
SW3-3
SW3-4
SW3-5
SW3-6
SW3-7
SW3-8
Comment
0
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Master Unit
1
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Slave Unit #1
2
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
Slave Unit #2
3
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
Slave Unit #3
4
OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
Slave Unit #4
5
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
Slave Unit #5
6
OFF
ON
ON
OFF
OFF
OFF
OFF
OFF
Slave Unit #6
7
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
Slave Unit #7
8
OFF
OFF
OFF
ON
OFF
OFF
OFF
OFF
Slave Unit #8
9
ON
OFF
OFF
ON
OFF
OFF
OFF
OFF
Slave Unit #9
10
OFF
ON
OFF
ON
OFF
OFF
OFF
OFF
Slave Unit #10
11
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
Slave Unit #11
12
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
Slave Unit #12
13
ON
OFF
ON
ON
OFF
OFF
OFF
OFF
Slave Unit #13
14
OFF
ON
ON
ON
OFF
OFF
OFF
OFF
Slave Unit #14
15
ON
ON
ON
ON
OFF
OFF
OFF
OFF
Slave Unit #15
NOTE: The PACC can connect up to 16 units, and the unit CAN ID address must be set in sequence from 0 to
15.
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4.4 Checklist for the Completed Electrical Installation
Confirm the items listed in Table 4-5 on completion of the electrical installation.
Table 4-5 Electrical Installation Checklist
Items to be Inspected
Results
The power voltage is same as that of rated voltage on the unit nameplate.
No open-circuit or short-circuit exists in the electrical connection.
Confirm, if the power cables and earth cables connected to the disconnect switch, indoor unit, and
outdoor unit are correct as per the norms.
The circuit breakers or fuses have correct ratings for the installed equipment.
The control connections are configured and subsequently, fixed properly.
All the wiring and connector connections, including the fixing blocks, are fixed firmly and
appropriately.
NOTE: Do not power on or operate the installed unit as Vertiv's authorized professional technicians have to
perform a check and confirm whether it is good to go. Starting up and Operating the unit should only
commence if the commissioning process is successful, following which Vertiv’s engineers give the go-ahead.
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Vertiv | Liebert CRD10 | User Manual 63
Chapter 5: Commissioning Overview
There are four different sections in commissioning starting with Self-Check, Preparation, Inspection of Auxiliary
Parts and Cables, Start-Up Inspection, Operating instructions, and Refrigerant oil re-filling & Troubleshooting.
NOTE: Remember that only the authorized staff and engineers of Vertiv can carry out the commissioning
process. This section is for information purpose only.
5.1 Self Check
In self check, verify whether the construction and installation meet the standard requirements to ensure
normal operation and enhanced service life of the unit. Vertiv engineers and personnel need to perform the
check-up as per the Table 5-1.
Table 5-1 Start-up Inspection Checklist
Items
Inspection contents
Results
Room
environment
Thermal isolation, moisture proof and sealing performances of protective structure.
Mounting
base
Whether the fixing is reliable and whether the vibration absorbing material between
the base and the unit is well installed.
Display panel
Check for any sign of damage, check whether it has good insulation and clean surface.
Compressor
The fixing metal plate at the bottom has been removed and the compressor has been
fixed as well.
Filter net
All the filter nets have been installed in the right positions; not damaged and clean
surface.
Outdoor unit
The outdoor unit has been installed in the right position; pipes are properly supported
with suitable inclination; the oil trap has been installed in the right position.
Fan
The air inlet and outlet areas are not blocked; the blades must not be stuck or have
abnormal noises when rotating the blades.
Heater
(if installed)
The heating component has been firmly fixed and the heating cables are reliably
connected.
Power supply
Check whether the voltage, phase rotation and frequencies of the front-end power
sup- plies for the indoor and outdoor units are normal.
Check whether the power supply cables are well connected.
Check whether each functional circuit breaker and contactor are reliably connected.
SPD
(if installed)
The SPD module should not be loosened, and the alarm terminals should be correctly
connected.
Controller
All the control wirings are reliable.
Pipes
The pipes are connected and supported reliably.
The solenoid valve kit is installed in the right positions and directions.
There are no exposed copper pipes, and thermal insulation cotton is well attached.
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Vertiv | Liebert CRD10 | User Manual 64
5.2 Preparations for Start-up
This section explains in brief the basics of the commissioning process to help users understand checks before
start-up.
5.2.1
Inspection of Pipes
•
Installing the connection pipes
1. Check if the equivalent length of the single-way pipe of the air cooled unit exceeds 30m(98.4ft.).
2. Check whether the solenoid valve kit and oil trap are installed.
3. Confirm if the corresponding refrigerant oil needs to be re-filled.
4. Check if the rated voltage of the solenoid valve on the liquid pipe meets the requirements.
5. Check the relative positions between the indoor and the outdoor unit. If the condenser is higher than the
indoor unit, the liquid pipe should be at a greater height than the “U” bend of the condenser coil.
•
Vacuuming
1. Open all the ball valves, electronic expansion valve (EEV) and solenoid valve of the system (Enter vacuum
mode).
2. Connect the compound pressure gauge to the corresponding high and low pressure schrader valves.
Vacuum from both the high and low pressure locations (shown in Figure 5-1) as indicated by the labels.
Requirements:
> Pull an initial deep vacuum of 500 microns on the system with a suitable pump.
> After 4 hours, check the pressure readings and, if they have not changed, break vacuum with dry
nitrogen. Pull a second and third vacuum to 500 microns or less. Re-check the pressure after 2 hours.
> When the 3 checks are complete, proceed to charging.
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Vertiv | Liebert CRD10 | User Manual 65
Figure 5-1 Connection Point of Compound Pressure Gauge on the System
3. Now the machine is ready for completing the charge and the start-up.
NOTES:
• If the unit can be switched on, you can select “Vacuum model” by micro controller, this model will
open the Electronic Expansion Valve and Solenoid Valve automatically; if not, the Electronic Expansion
Valve and Solenoid Valve will need to be opened manually.
• Never use the compressor to create a vacuum (this invalidates its guarantee).
Trap
Condenser coil
Evaporator coil
Ball valve
EEV
Sight glass
Filter drier
Schrader valve
Check valve
High pressure
sensor
High pressure switch
Discharge temp. sensor
Compressor
Suction pipe
Schrader valve
Low pressure sensor
Suction temp. sensor
Solenoid
valve
Schrader valve
Ball valve
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Vertiv | Liebert CRD10 | User Manual 66
•
Inspection of auxiliary parts and cables
1. Check if the drainage is normal.
2. Check the electric circuits: Fasten all the electrical connections, and ensure that there is no short circuit &
open circuit and the insulation is good.
3. Check the main power supply voltage of the unit.
5.2.2
Start-up Inspection
1. Open the corresponding circuit breaker of each component of the unit, close the general circuit breaker
and the transformer circuit breaker, and check the control voltage.
2. Check the indoor fan: Close the fan circuit breaker; manually set output value to 75% to check the fan
running current.
3. Check the Electric Heating kit: Close the Electric Heating circuit breaker, start the Electric Heating device
manually, check the Electric Heating running current, and close the Electric Heating device after
completion of the operation.
4. Check the air cooled condenser: Check if the condenser is installed correctly, including whether the wiring
is correct, whether the fan is reliably fixed, and whether the fan blades is in contact with the fan frame,
and whether the obstacles near the condenser have been cleared away.
5. Run the fan to check if the fan rotates normally and check the input voltage.
6. Charge refrigerant and start-up.
5.3 Refrigerant Charge
The air-cooled unit must be charged on - site with refrigerant, charge the suitable quantity of liquid
refrigerants as indicated on the label. Following are the procedure of charging refrigerant: Depending on the
different connecting conditions, there is a standard charge amount for the air-cooled unit, so be sure to
refer to the calculated charge amount to avoid overcharge.
1.
Charging refrigerant statically: The refrigerant system should be charged quickly with a suitable amount
of liquid refrigerant after vacuuming the system (usually the system pressure can be charged equal to the
tank pressure). Connect the high-low pressure compound pressure gauge to the refrigerant cylinder, air
in the hoses connect to the gauge should be drained-out. Connect the high-low pressure compound
pressure gauge to the schrader valve behind electronic expansion valve and ball valve of the liquid tube,
keep the cylinder handstand at the process of charging statically. Stop charging when the charge amount
is more than the calculated value.
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Vertiv | Liebert CRD10 | User Manual 67
NOTES:
• After charging the refrigerants statically, do not turn on the compressor and charge the refrigerant
dynamically until the crank case heating device has been pre-heated for longer than 12 hours.
• For dynamic filling of the refrigerants, the charging speed should not be higher in order to avoid the
com- pressor damage.
2.
Charging refrigerant dynamically: Keep the refrigerant cylinder handstand, manually start the unit to
charge refrigerant dynamically (manually set the output value to 75% for the fan, start the compressor
after 5min -> adjust the compressor output to 72%). After compressor operation, refrigerant will be
suctioned to the system until there are no bubble in the sight glass and condensation supercooling is
more than 3 K, the superheat is more than 7 K. Observe the suction pipe of the compressor, ensure that
there are no frosted phenomenon on the surface of pipe and compressor. Ensure that there are 25-40K
discharge superheat.
Record the running parameters of the cooling system according to the requirements of CRD10 Air-cooled AC
Startup and Commissioning Report.
Record the parameters operating instructions
1.
Start the manual mode: Start-up from the panel – Enter level 2 password – Set the system – Manual
Mode – Manual Mode Enabled – Set to “Y”
2.
Start vacuum mode: Enable Manual Mode - Vacuum mode- Set to “Y”
• Close the transformer circuit breaker
• Ignore the “Fan/Power Failure” alarm after startup
• If the vacuuming starts before the vacuuming mode is started, “low pressure sensor fault” alarm will occur
after startup, and then ignore this alarm
3.
Manually start/stop each component
Enable Manual Mode- Start/Stop the output of corresponding component. The output percentage value of
the compressor and fan can be adjusted after they are started up
• Output percentage value of the compressor cannot be adjusted until the compressor has started up for
about 5min (i.e., the soft start is over)
• After the compressor is off (including manual turn-off and unit shutdown), the compressor will be in soft
shutdown status (in manual mode - the soft shutdown status is displayed as “Y”), but the derated speed
output will still remain. After the soft shutdown phase is ended (about 5-10min), the compressor is off. In
order to ensure the reliability of the compressor, avoid directly turning off the circuit breaker of the
compressor.
NOTES:
• Refer Section 3.9 for the calculations of the refrigerant refill and charging
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• Once the commissioning is completed, Vertiv representative will confirm the unit is charged and
operating correctly before the unit is put into operation.
Table 5-2 Commissioning Confirmation Checklist
Check item
Result
Check and confirm that all the output functions are automatic
Check that the Temperature & Humidity settings as well as the control precisions are configured
correctly
Ensure that all the other functions are configured and set correctly
5.4 Start-up Procedure
WARNING! Risk of hair, clothing and jewelry entanglement with high speed rotating fan blades. Can
cause equipment damage, serious injury or death. Keep hair, jewelry and loose clothing secured and
away from rotating fan blades during unit operation.
5.4.1
First Start-up (or after long standstill)
To prevent compressor damage, the crankcase must be preheated for at least 12 hours before conditioner
start- up. Start the air conditioner as follows:
1. Open all valves in the refrigerant circuit according to the instruction label attached to the valve.
2. Ensure that refrigerant charge is correct.
3. Using a leak detector, verify that there are no refrigerant leakages.
4. At least 12 hours before start-up, the main switch should be closed.
5. Verify the operation of the crankcase heater.
6. Check that there are no water leakages.
7. Ensure that the indoor temperature is higher than 18°C (64.4°F) and there are thermal load exists. If this
situation doesn’t exist, preheat the indoor by using other heating device or heater of the unit manually.
8. Close all MCB’s on the electrical panel.
9. Check the supply voltage on all phases.
10. Ensure that the compressor has been preheated for at least 12 hours before starting the unit.
11. Start the unit by press the ON/OFF button on the Micro-Control for 3s.
12. Press the Enter button again to highlight the input data field in the Password screen, set the target value of
temperature and humidity.
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13. Ensure that all control system settings are correct and that there are no alarms.
14. Once the system is operating under load, carry out the following checks:
• Verify that the fans are operating properly.
• Ensure that the temperature and relative humidity are being reached, and the heating steps operate when
required.
5.4.2
Automatic Restart
If requested, the unit will automatically restart on the return of power after a power supply interruption. If
the power interruption is expected to last several hours, to avoid an automatic cold restart of the
compressor stop the unit before the interruption and on the return of power, allow the compressor to
preheat before restarting the unit.
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Chapter 6: Micro-Controller
This section introduces content related to the controller, basic system maintenance, and routine
troubleshooting which enables the customer to understand the functioning of the equipment. It helps
customers gain insight into the inner workings of the product comprising the information such as System
setup, Alarm menus, and Basic operations of the controller interface.
6.1 Features
Following are the features of the micro-controller:
1. The micro-controller is used for monitoring and displaying the operation status of the CRD10 unit to keep
the environment within a setting range.
2. The Liebert CRD10 air conditioning configuration 7-inch HMI color screen, which makes user interface
operation simple.
3. It provides a three-level password protection to effectively prevent unauthorized operation.
4. User can accurately understand the main parameters and operating status of the system through menu
operation.
5. Real time display of measured Temp & Hum curves.
6. It accurately displays the running time of critical components through menu operation.
7. The expert-level fault diagnosis system can automatically display the current fault information to facilitate
maintenance personnel in effective servicing and repair of the unit.
8. It can store up to 500 historical alarm records.
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6.2 Appearance
Appearance of 7- inch HMI display color screen is shown in Figure 6-1.
Figure 6-1 Color Screen
The display indicator lamp has 4 colors. The corresponding color and function are described in the Table 6-1.
Table 6-1 Function Description
Indicator Color
Description
Blue
Starting display
Yellow
Display system shutdown or failure in the control panel communications.
Green
System operating normally
Red
Alarm in system and buzzer
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6.3 Control Screen
6.3.1
Main Screen
After the startup is completed, enter the main interface. The top part of the color screen displays the menu
button, first page button, time and date and unlock button. You cannot enter the option menu as the menu
button is not unlocked. Click the unlock button and enter correct password, the top part of the screen will
display temperature/humidity setting button, curve button and on/off button as shown in Figure 6-2. You
can switch the on/off functions by pressing the on/off button for at least 3s.
As shown in the left half part of the Figure 6-2, the text on the left of the control mode displays the
humidity control mode (air supply humidity control), the text on the right displays the temperature control
mode (default air supply control mode, and is consistent with the compressor control mode), and the
temperature value in the circle shows the actually measured temperature / humidity values (default is air
supply temperature) in current mode, and the humidity value means the air supply humidity. For the two
triangles on the edge of perimeter, the left one means the air supply humidity setpoint and the right one
means the temperature setpoint in current mode. Clicking toggle button 1 can switch the display between
the graphic display and table display. Click the setting button can enter the temperature / humidity setting
interface to set the temperature / humidity.
As shown in the right half of Figure 6-2, the sensor data or alarm data is displayed. Click the toggle button 2
to switch between the sensor data and the alarm data.
Figure 6-2 Color display screen - Unlock
Table 6-2 provides the list of menu keys and its functional description:
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Table 6-2 Functional Description
Touch keys
Functional Description
Home button
Press this button to enter the main page to see the systems primary data readings.
Menu button
Press this button to display the main menu page by page and enter the various sub-menus
Setting button
Press this button to enter the temperature and humidity settings page, t which can set the
system temperature and humidity and the control mode.
Graph button
Click this button to enter the curve interface, you can view the average return air temperature,
the remote average temperature, the average air supply temperature, and the average air
supply humidity of 0~48Hour.
Time display
Displays the current time
Unit address
Displays the unit address
Display address
Displays the display address
ON/OFF button
Unit is turned off, press the button at least 2s, the unit will boot; the unit is running, Press on
the button at least 2s, the unit will shut down;
Unlock button
Press the unlock button, enter the correct user login password to log in; the menu icon appears
after logon to set parameters; Click the unlock button to enter the unlocked interface.
Operating status
Display the current operating status of the unit (shutdown, operation, standby, lock,
communication interruption).
Toggle button 1
Press the toggle button to switch between the graphical display mode and the list display mode
Toggle button 2
Press this button to switch between the current sensor readings and alarm pages
Control mode
Display the current setting value of the unit and the environmental conditions of the
equipment, as described in the following main interface control mode
Status display
Displays the current state of the unit
Sensor reading list
Displays the current operating status of each sensor and its respective components
Alarm list
Displays all the current alarms and its occurrence time
6.3.2
Main Interface Control Mode
The main interface is divided into temperature control mode, humidity control mode, temperature value in
current control mode, theoretical supply air humidity value, three read-only status of temperature /
humidity setting value.
Figure 6-3 Control Mode Diagram
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Table 6-3 Description of control mode diagram
No.
Description
1
The colors in the circle are green, gray, and red. For details, see Table 6-4.
2
The measured supply air temperature value changes with the change of the compressor’s current control mode.
3
The humidity setting value changes and rotates clockwise between 30-150 polar coordinate angles according to
the range of humidity setting value. When the humidity setting is the minimum value, the value is 30 degrees in
the polar coordinate, when the humidity setting value is the maximum value, and the humidity setting value is
150 degrees in the polar coordinate.
4
Humidity control is the air supply humidity control by default, showing “supply”
5
The temperature setting value changes and rotates clockwise between 30-150 polar coordinate angles according
to the range of temperature setting value. When the temperature setting is the minimum value, the value is 30
degrees in the polar coordinate, when the temperature setting value is the maximum value, and the temperature
setting value is 150 degrees in the polar coordinate.
6
Theoretical air supply humidity value
7
The current control mode of compressor is air supply humidity control by default, showing “supply”
8
means humidity
9
means temperature
There are three types of main interface unit status colors, as shown in Figure 6-4.
Figure 6-4 Unit Status Color
Table 6-4 Unit Status Color Description
Status
System Status Description
Red
Power-on sensor data is not in the normal range or is invalid
Gray
Off state
Green
Power on status is within the normal range
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6.3.3
Password Interface
Press the unlock icon in the upper right corner of the display, the password interface is displayed, as shown
in Figure 6-5.
Figure 6-5 Password interface
The Table 6-5 reflects the 2 levels of passwords for accessing the menu.
Table 6-5 Password Level
Password
level
User
Initial
password
Remark
Level 1
General
operator
1490
Browse all menu information.
Set all parameters except running and maintenance menu.
Level 2
Maintenance
personnel
-
Browse all menu information. Set some running and maintenance menu
parameters.
Users can’t change the settings when entering an incorrect password; however, they can view the menu. To
go back to the Main screen, press the Esc button and then click on the Enter button to get access to the
Password interface again.
NOTE: If the users do not enter a password and press the Enter button, the users can view the menu
settings but can’t change any parameters, similar to the incorrect password example.
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6.4 Menu Structure
The Main Menu screen will be accessible by entering and confirming the correct password credentials, as
shown in Figure 6-6. For more information, refer to the Appendix II Display Menu Structure Diagram.
Figure 6-6 Main Menu
The menu structure is described in Table 6-6.
Table 6-6 Main Menu Description
Menu item
Descriptions
Menu
Run Information
View temperature/humidity information, switch status, power information,
Teamwork information
Alarm
Information
View system active alarms and history alarms
Temp & Hum setting
Set the temperature/humidity value
Param Setting
Set teamwork control settings, some alarm setpoint settings, some alarm attribute
settings, communication settings, time settings, display settings and password settings
Graph
View return air temperature curve, return air humidity curve, supply air temperature
curve, and remote temperature curve
About
View the controller software and hardware version number, and the software and
hardware version number of the display
Homepage
Display operating status, operating data, alarm data, sensor data
Setting
Temperature/humidity setting under the same menu
Curve
Temperature/humidity curve under the same menu
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6.5 Run Information
In the main menu, select Run Information to enter the interface as shown in Figure 6-7, including
temperature humidity information, switch status, power information, and teamwork information.
•
Temperature Humidity
The Tem/Hum information displays the temperature/humidity parameters of the device in real time,
including return air temperature/humidity, supply air temperature, remote temperature and other
information, as shown in Figure 6-7 of temperature/humidity information. To scroll up or down the query,
press the scroll bar at the far right.
Figure 6-7 Temperature Humidity Information
•
Switch Information
From the menu, the current input and output states of the devices can be viewed using the switch status
utility. Figure 6-8 shows the screen for the digital signal function.
Figure 6-8 Switch Status Information
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•
Power Information
The Power Information menu displays the voltage and frequency, as shown in Figure 6-9.
Figure 6-9 Power Information
•
Teamwork Information
The Teamwork Information menu displays the status of the group information, as shown in Figure 6-10.
Figure 6-10 Teamwork Information
6.6 Alarm Information
Press the Alarm Information icon in the main menu to enter the page as shown in Figure 6-11. It contains
two pages: alarm status and alarm history.
•
Alarm Status
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The Alarm Status page is used to monitor the current alarm status record of the AC unit, indicating no alarm
or specific alarm status information. Specific alarm status information includes serial number, alarm content,
alarm time, as shown in Figure 6-11.
Figure 6-11 Alarm Status
NOTES:
• The latest Alarm SN is the least number. Press the Up or Down button to scroll through the status
records if more than one alarm is activated.
• They will be cleared upon system Power-Off.
•
Alarm History
The Alarm History is used to view the historical alarm records, including the Alarm Status Number
(quantifiable number of history alarms), Alarm Serial Number and Alarm Type., Alarm Time (Start and End
Time) as shown in Figure 6-12.
Figure 6-12 Alarm History
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NOTES:
• Press the Up or Down button to scroll through the status records if more than one alarm is
activated.
• Up to 500 historical alarm records can be stored. They will not be cleared upon system Power-Off.
6.7 Temp/Hum Setting
Select the Temperature Humidity setting in the main menu to enter the interface as shown in Figure 6-13,
including temperature settings and humidity settings.
•
Temp Setting
The Temp Setting menu interface is shown in Figure 6-13. The user can set the return air temperature,
remote temperature, supply air temperature and temperature difference under this menu.
Figure 6-13 Temp Setting
•
Hum Setting
The Hum Setting menu interface is shown in Figure 6-14. The user can set the humidity setting value under
this menu.
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Figure 6-14 Hum Setting
6.8 Parameter Setting
Select Parameter Setting from the main menu to enter the interface as shown in Figure 6-15, including
teamwork setting, alarm setting, alarm attribute, communication setting, time setting, display setting,
password setting.
•
Teamwork Setting
The teamwork Setting menu interface is shown in Figure 6-15. System setting screen, the system
parameters can be set to monitoring protocol, baud rate monitoring address, date and time, the display
monitor address.
Figure 6-15 Teamwork Setting
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•
Alarm Setpoint
The Alarm Setpoint menu interface is shown in Figure 6-16.
Figure 6-16 Alarms Setpoint
NOTE: Do not change the default values of the initial settings. It is recommended to change the settings
only under the guidance of qualified service professional.
•
Alarm Attribute
The Alarm attribute menu interface is shown in Figure 6-17.
Figure 6-17 Alarm Attribute
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•
Communication Setting
The Communication Setting menu interface is shown in Figure 6-18.
Figure 6-18 Communication Setting
•
Time Setting
The Time Setting menu interface is shown in Figure 6-19.
Figure 6-19 Time Setting
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•
Display Setting
The Display Setting menu interface is shown in Figure 6-20.
Figure 6-20 Display Setting
•
Password Setting
The Password Setting menu interface is shown in Figure 6-21.
Figure 6-21 Password Setting
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6.9 Graph
Select Graph in the main menu to enter the interface as shown in Figure 6-22. Under this menu, the user
can query the curve of return temperature, return humidity, supply temperature, and remote temperature
of 0 to 48 Hours.
Figure 6-22 Graph
6.10 About
The About menu is used to query the software information and service information, as shown in Figure 6-23
and Figure 6-24.
Figure 6-23 Version Information
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Figure 6-24 Service Information
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Chapter 7: Maintenance & Troubleshooting
This chapter deals with the system operation and maintenance of the Liebert CRD10 range of air
conditioners. In this chapter, the following points or items will be discussed to help users get to grips with
the routine inspections and checks from a end-user-perspective. It includes the maintenance of electrical
parts and connections, refrigerant system maintenance guidelines, routine monthly and semi-annual
checklists, and drainage system maintenance among others. It also discusses the basic troubleshooting
which can be understood from a user perspective.
WARNING! Arc flash and electric shock hazard. Open all local and remote electric power-supply
disconnect switches, verify with a voltmeter that power is Off and wear appropriate, OSHA-approved
personal protective equipment (PPE) per NFPA 70E before working within the electric control
enclosure. Failure to comply can cause serious injury or death. Customer must provide earth ground
to unit, per NEC, CEC and local codes, as applicable. Before proceeding with installation, read all
instructions, verify that all the parts are included and check the nameplate to be sure the voltage
matches available utility power. The Liebert® controller does not isolate power from the unit, even in
the “Unit Off” mode. Some internal components require and receive power even during the “Unit Off”
mode of the controller. The only way to ensure that there is NO voltage inside the unit is to install and
open a remote disconnect switch. Refer to unit electrical schematic. Follow all local codes.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death.
Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that
power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or
on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a
power failure.
WARNING! Risk of contact with extremely hot and/or cold surfaces. Can cause injury. Verify that all
components have reached a temperature that is safe for human contact or wear appropriate, OSHA-
approved PPE before working within the electric connection enclosures or unit cabinet. Perform
maintenance only when the system is de-energized and component temperatures have become safe
for human contact.
WARNING! Risk of hair, clothing and jewelry entanglement with high speed rotating fan blades. Can
cause equipment damage, serious injury or death. Keep hair, jewelry and loose clothing secured and
away from rotating fan blades during unit operation.
CAUTION: Risk of excessive refrigerant line pressure. Can cause tubing and component rupture
resulting in equipment damage and personal injury. Do not close off the refrigerant-line isolation
valve for repairs unless a pressure-relief valve is field- installed in the line between the isolation valve
and the check valve. The pressure-relief valve must be rated 5% to 10% higher than the system-design
pressure. An increase in ambient temperature can cause the pressure of the isolated refrigerant to
rise and exceed the system-design pressure rating (marked on the unit nameplate).
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NOTICE!
Risk of improper maintenance. Can cause equipment damage.
Installation and service of this equipment should be done only by qualified personnel who have been
specially-trained in the installation of air-conditioning equipment and who are wearing appropriate,
OSHA-approved PPE."
Ignoring safety instructions is dangerous. Soiled parts cause a loss of performance and, for switch or
control devices, can lead to the breakdown of the unit performance and operation.
NOTICE!
Risk of release of hazardous substances into the environment. Can cause environmental pollution and
violation of environmental regulations.
The Liebert® CRV contains substances and components hazardous for the environment (electronic
components, refrigerating gases and oils). At the end of its useful life, the Liebert® CRV must be
dismantled by specialized refrigerating technicians. The unit must be delivered to suitable centers
specializing in the collection and disposal of equipment containing hazardous substances.
7.1 Routine Maintenance & Inspection (Monthly)
Following is the checklist which contains parts and components that are to be checked to ensure proper and
accurate functionality. In addition to that, there may be wear and tear of the equipment. Therefore, it is
essential that all the checks are performed to ensure a smooth flow in operations. Table 7-1 tabulates the
inspection tasks and actions to be implemented and carried out every month during maintenance of the
various components in the CRD series of air conditioners.
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Table 7-1 Routine Maintenance & Inspection (Monthly)
Components
Item
Remark
Air Filter
Check for clogging or damage
Check the filter clogging switch
Clean the filter
Fan
The fan blades are not distorted
The bearings are not worn out
Compressor
Check for leakage
Listen to the operation sound, observe the operation vibration
Air cooled
condenser
Make sure that the condenser coil is clear from dirt and debris. Clean if
required.
The fan base should be firm
The fan vibration absorber is not deteriorated or damaged
The refrigerant pipes are properly supported
Refrigeration
system
Check the suction pressure
Check the discharge pressure
Check the refrigerant pipes for signs of leaks
Check the moisture condition in the system through the sight glass
Check the electronic expansion valve
Heating system
Check the re-heater operation
Check the erosion on the components
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7.2 Routine Maintenance and Inspection (Semi- annually)
Following is the checklist (refer Table 7-2) of the items and functions that need to be checked semi-annually
to ensure a smooth operational flow and check the functionality as well as the wear-and-tear of the
components in the Liebert CRD 10kW range of air conditioners.
Table 7-2 Routine Maintenance & Inspection (Semi-annually)
Components
Item
Remark
Air Filter
Check for clogging or damage
Check the filter clogging switch
Clean the filter
Fan
The fan blades are not distorted
The bearings are not worn out
Check and fasten the circuit connections
Compressor
Check for leakage
Listen to the operation sound, observe the operation vibration
Check and fasten the circuit connections
Air-cooled
condenser
Check the fins cleanness
The fan base should be firm
The fan vibration absorber is not deteriorated or damaged
Check the voltage regulating function of the rotation speed controller
The temperature switch is set at the required position
The refrigerant pipes are properly supported
Check and fasten the circuit connections
Check the suction pressure
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Components
Item
Remark
Refrigeration system
Check the discharge pressure
Check the refrigerant pipes
Check the moisture condition in the system through the sight glass
Heating system
Check the re-heater operation
Check the erosion situation of the components
Check and fasten the circuit connection
Electric control part
Check the fuse and the MCB
Check and fasten the circuit connections
Check the control program
Check the contactor action
Pump filter
Check if there is any foreign matter in the water tray
Check pump filter
7.3 Self-Diagnosing Functions
The micro-controller has a built-in diagnostic function that helps to turn on/off the components and check
their functionality.
7.4 Maintenance of Electrical Control Utilities
In this section, the following processes will be discussed in brief, namely-
1. Maintenance of Electric Parts
2. Maintenance of Control System
3. Water-Leak-Detector
7.4.1
Maintenance of Electric Parts
Visual checks and handling needs to be carried out to check the correctness of electrical connections for the
following items:
1. Conduct the electrical insulation test on the system to find out bad electrical connections and contacts.
Disconnect all the fuses and MCBs of the control part during the test as high voltage from the insulation test
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could damage the components.
2. Check the contactors prior to powering on the unit to ensure that the contactors can hold and un-hold freely.
3. Clean the electrical and control components off dust with brush or dry compressed air.
4. Check the closing of contactors for arcs or signs of burning. Replace the contactors, if required.
5. Fasten all the electrical connection terminals.
6. Check that the sockets and plugs are in good condition. Replace the contactors, if required.
7. If the power cables are damaged, get them replaced by a qualified/certified electrician.
7.4.2
Maintenance of Control System
Appearance checks and simple, functional tests, coupled with handling of control parts needs to be carried
out on the following items:
1. Carry out visual checks on the power transformers and isolation transformers for any burn marks followed
by testing the output voltage (of the indoor unit and outdoor condensers).
2. Check for signs of ageing on the control interface board, control board, temperature and humidity sensor
boards, and fuse boards.
3. Clean the electrical control components and control board to remove dust. Debris, dust, and dirt must be
removed, preferably by a dust removing agent.
4. Check and fasten the Input/ Output ports on the control interface board. It should also include the
connections between the control board and control interface boards as well as between the
Temperature/Humidity sensor boards and the control interface board.
5. Check the connection between the user terminals (24#, 51#, 37#, 38#, 72#, 73#, 75# and 76#) and the
control interface board.
6. Check the output connections between the control interface board and various components including
contactors and solenoid valves for liquid pipes. Inspect the input connection between the control interface
board and various components, including high pressure switches, heating overtemperature protection
switches, discharging temperature and high pressure sensors. Specifically, check the inserting terminals such
as high pressure switches and heating over temperature switch followed by replacing the component if it is
loosened or in poor condition.
7. Replace the faulty electric components such as faulty control fuses (or MCB’s) and control boards.
8. Check the trunking or insulation condition of the control and power cable connected to the condenser from
the indoor unit. Replace the cable, if required.
9. Use a temperature/humidity measuring meter with high precision to calibrate Temperature/Humidity
sensor.
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10. Regulate the setting point. Meanwhile, check the action of the various function components according to
the control logic
11. Simulate and inspect the operation-and-working states of protecting units such as High/Low pressure alarm,
High/Low Temperature alarm, High Water Level alarm, and over-temperature alarm and over-temperature
protection.
12. Check the sensors.
7.4.3
Water-Leak-Detector
When the unit is installed on the raised floor, the water leak detector is arranged on the ground under the
floor; when the unit is installed on the floor, the leakage water detector are arrange on the floor. Confirm
the alarm information through the controller. The detector should be located away from any water pool or
drainage discharge on the floor, 2 to 2.5 meters away from the unit. Do not place it directly under the
machine. Figure 7-1 shows the recommended location for the water-leak-detector:
Figure 7-1 Recommended Location for the Water-Leak-Detector
NOTE: Do not use the water-leak-detector in the vicinity of flammable liquids; do not use it to detect any
flammable liquids.
Location of water
leak detector
Location of water
leak detector
Drain pipes on the ground
Liebert unit
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7.5 Air Filter Maintenance
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death.
Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that
power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or
on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a
power failure.
Air filter filtration class is America MERV8/Europe G4 standard.
1. Set the filter maintenance and alarm logic to ensure efficient operation. The fan operating time is 90 days by
default (though the time is set and customized based on the local operating environment); the filter
maintenance alarm is triggered based on the configuration and settable operation time.
2. Check and replace the filter according to its dust and clogging condition. During normal operations, the filter
needs to be checked once a month and replaced as per the requirement.
NOTE: Cut off the power before replacing the filter. Clear the fan operating time after replacing the
filter.
7.6 Fan Kit Maintenance
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and
remote electric power supply disconnect switches and verify with a voltmeter that power is off before
working within any electric connection enclosures. Service and maintenance work must be performed
only by properly trained and qualified personnel and in accordance with applicable regulations and
manufacturers’ specifications. Opening or removing the covers to any equipment may expose
personnel to lethal voltages within the unit even when it is apparently not operating and the input
wiring is disconnected from the electrical source.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death.
Open all local and remote electric power-supply disconnect switches, verify with a voltmeter that
power is off, and verify that all fan blades have stopped rotating before working in the unit cabinet or
on the fan assembly. If control voltage is applied, the fan motor can restart without warning after a
power failure.
Regular checking of the EC fans includes inspection of the motor operating status, fan impeller state, and
the co- operative clearance between the fan and wind-leading ring.
Check whether the fan or the wind-leading ring has been installed properly and firmly. Ensure that the fan
blades do not hit the adjacent metal plates under any circumstances. Clear the clogging element of the air
duct to avoid damage to the refrigerating system and other system kit due to reduced air volume.
In addition, the fan fault alarm of the control board and alarm point of the EC Fan is connected in series. If
Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual 95
the rotating speed is abnormal, the unit will ideally generate an EC fan fault alarm.
If one of fans break down, you can repair or replace it by taking it off from the unit. Because all fans of the
unit are equipped independently. Following are the procedures to replace the fan:
1.
Shut off all power to the unit by closing the main disconnect switch on the electrical panel.
2.
Open the front door of the unit.
3.
Unscrew the fan, take it out from fixed frame.
Figure 7-2 Removal the Fan
4.
Remove other fans using the same way.
Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual 96
7.7 Electrical Heater Maintenance (Only CE Model)
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and
remote electric power supply disconnect switches and verify with a voltmeter that power is off before
working within any electric connection enclosures. Service and maintenance work must be performed
only by properly trained and qualified personnel and in accordance with applicable regulations and
manufacturers’ specifications. Opening or removing the covers to any equipment may expose
personnel to lethal voltages within the unit even when it is apparently not operating and the input
wiring is disconnected from the electrical source.
Following are the basic instructions relevant to the maintenance of the Electrical Heater from the user
perspective:
1. If an optional electrical heater is used, then it should be monitored periodically.
2. Ensure that there is no dust, debris, or foreign matter on the surface. The heater elements will heat
continuously in the normal state.
3. Inspect the heater every six months for its functionality.
If the heating is not effective, the electric heater needs to be replaced. Following are the procedures of
replacing electrical heater:
1. Shut off power to the unit by closing the main switch.
2. Open the front door and remove the fan assemblies. If replacing the electrical heater above, remove
the upper two fan assemblies, if replacing the electrical heater below, remove the two fan assemblies
below.
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Vertiv | Liebert CRD10 | User Manual 97
Figure 7-3 Removal the Fixed Plate
3. Remove the electric heater by unscrewing the fixed screws. Figure 7-4 shows the location of the
electric heater screws.
Figure 7-4 Removal the Electric Heater
For replacement, contact the maintenance personnel and support team of Vertiv.
Fan assembly
(up 2PCS)
Hole plug
(up 2PCS)
Hole plug
(below 2PCS)
Fan assembly
(below 2PCS)
Front door
Screw (4PCS)
Screw (4PCS)
Electrical heater
Front door (Opened)
Front door (Opened)
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Vertiv | Liebert CRD10 | User Manual 98
7.8 Condensate pump maintenance
WARNING! Risk of electric shock. Can cause injury or death. Open all local and remote electric power-
supply disconnect switches and verify that power is Off with a voltmeter before working within the
condensate pump electrical connection enclosure. The Liebert® controller does not isolate power
from the unit, even in the “Unit Off” mode. Some internal components require and receive power
even during the “Unit Off” mode of the Liebert® controller.
7.8.1
Pump Replacement:
1. Disconnect the power to unit using disconnect switch.
2. Open the rear door.
Figure 7-5 The Location of Condensate Pump
3. Pull out pipe of the pump by unscrewing the hose clamp.
4. Unscrew the hose clamp that was used to fix the pump.
Condensate pump
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Vertiv | Liebert CRD10 | User Manual 99
Figure 7-6 Removal the Condensate Pump
7.8.2
Pump Maintenance
1. Disconnect power to unit using disconnect power switch.
2. Open the rear door.
3. Check and clear any obstructions in the main line of the condensate pump.
4. Remove the pump and clean it with a mild cleaning solution.
5. Check that the float mechanism is clean and free of foreign matter.
6. Re-install the pump and check the operation.
7.9 Refrigerating System Maintenance
Following are the basic instructions relevant to the maintenance of the Refrigerating system:
1. Check the refrigerating system once a month to ensure the system functionality.
2. Perform a visual check for detecting signs of wear and tear.
3. Regular inspection is a good practice to ensure long service life of the refrigerating system
4. Check the refrigerant pipes once every 6 months to ensure that there is no wear and tear.
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Vertiv | Liebert CRD10 | User Manual 100
7.10 Drainage System Maintenance
NOTES:
• Inspect the water tray periodically to ensure normal operation of the drainage pipe.
• Ensure no sediments, debris, foreign matter, or leakage occurs in the water tray.
7.11 Dismantling the Unit
The machine has been designed and built to ensure continuous operation. The working life of the main
components, such as the fan and the compressor, depends on the operation and maintenance that they
receive. The unit contains environmentally hazardous substances and components (electronic components,
refrigerating gases and oils). At the end of the useful life, when the unit is dismantled, the operation must be
carried out by specialized refrigerating technicians. The unit must be delivered to appropriate centers
specialized in the collection and disposal of equipment containing hazardous substances. The refrigerating fluid
and the lubricating oil inside the circuit must be recovered according to the laws in force in the relevant
country. To recover the gas use all the connections described in the user manual.
7.12 Troubleshooting
Troubleshooting is to be performed by the trained and qualified service personnel. However, the checklists
have been provided for reference purpose only.
NOTE: If jumpers are used for troubleshooting, remember to remove the jumpers after the troubleshooting,
failing which the connected jumpers may bypass certain control functions and increase the risk to the
equipment.
Table 7-3 Troubleshooting the Fan
Symptom
Possible Causes
Items to be Checked
EC fan can’t be
started
Power Supply
Disconnected
Check whether the fan MCB is closed; If the MCB is closed, check if the
power voltage of each phase is normal
Control board
faulty
Check J16 on the micro-processing control board, to ascertain whether
the control board is faulty or functions correctly
Fan power module
faulty
Check the alarm lamp on the fan power module to ascertain whether it
is faulty or functions correctly
EC fan faulty
Check power cable of the fan against power failure, phase loss, and low
voltage
Check whether the analog output is within the specific range of
0to10Vdc as per the requirement
Check whether the motor is clogged (due to large current)
Check whether the motor is too hot
NOTES:
• If the previous three problems (i.e. Motor Clogging, Hot Motor, or Hall failure) occurs, the motor can
restore normal operation after the faults are cleared.
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Vertiv | Liebert CRD10 | User Manual 101
• If the motor is too hot, cut off the fan power; after the motor cools down, power on it again for
recovery.
• In the event of a hall failure, factory service is required to fix the issue.
7.12.1
Troubleshooting of the Heating System
Table 7-4 Troubleshooting the Heating System
Symptom
Possible Causes
Items to be Checked or Handling Method
Heating system
does not start, the
contactor does
not close
No heating
demand
Check the state of the micro-processing controller, and confirm if there
is a requirement for the heating command
Safety device of
the heating
system is open
Use a multi-meter to measure the resistance on both ends of the
temperature controller; if the resistance is very large, it indicates that the
safety device may be open. Next, check whether the fuse is open and the
temperature controller is damaged. Measure the resistance of the heater
with an ohmmeter to judge if the heater is damaged
The Contactor
closes, but
heating is
ineffective
Heater main
power is off
Check if the heater’s MCB is turned ON; Check whether the voltages are
normal when the contactor is energized
Electric heater
burned
Turn off the power; then physically check the condition of the heater
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Vertiv | Liebert CRD10 | User Manual 102
7.12.2
Troubleshooting of Compressor and Cooling System
Table 7-5 Troubleshooting the Cooling System
Symptom
Possible Causes
Items to be Checked or Handling Method
Compressor can’t be
started
Does not power-on (shutdown)
Check the main power against under-voltage,
over-voltage, and phase loss
MCB and contactor faulty
Check the compressor MCB, contactor, and
connecting cables
Alarm lock
View the unit alarm records, replace the
damaged component and power it on again
Compressor coils shorted and burnt
Check the motor and replace it in case of any
defects or malfunction
The Contactor does not
get closed, and the
compressor does not
start
Low discharging overheat degree alarm
Check the state of the micro-processing
controller
High pressure MCB action
Check if there is an HP alarm.
Discharging temperature alarm
Check whether a discharging low/high
temperature alarm exists
Low pressure alarm
View if a low-pressure alarm exists in the history
alarm
Contactor faulty
Check if the contactor is able to energize.
Compressor driver faulty
Check the compressor driver
The Compressor
stops after running
for 3 minutes.
Contactor open
Refrigerant leaked, the low-pressure
check is too low or abnormal
Check the suction pressure
Check the circuit of the low-pressure sensor
Calibrate accordingly so that the low-pressure
sensor reader is within ±0.3 bar range of the actual
pressure
High pressure protection
Condenser clogged
Clean the condenser
Condenser system does not start
Check the condenser fan for the air-cooled system
Too much refrigerant has been charged
Check whether the sub-cooling degree is too high
Low discharge pressure
Refrigerant leaked
Locate the leakage point, repair it and add the
refrigerant
The Fan speed controller of the outdoor
unit is faulty, while the output voltage
remains 100%, irrespective of the
change in the condensing pressure
If the fan speed controller is found faulty, then it
has to be replaced
Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual 103
Symptom
Possible Causes
Items to be Checked or Handling Method
The suction and
discharge pressures
do not change after
startup
Either the Compressor is reversed or
the internal air tightness of the
compressor has failed
If the compressor is reversed, exchange any two L
lines of the compressor. If the internal air
tightness of the compressor has failed and cannot
be restored, replace the compressor
Low suction
pressure or liquid
returned
Insufficient refrigerant in the system
Check for leaks. Seal the leaking point and add the
refrigerant
Air filter too dirty
Replace the air filter
Filter drier clogged
Replace the filter drier
Improper superheating degree
Check the control board of the Electronic
Expansion Valve (EEV)
Sensing element of the electronic
expansion valve faulty
Replace the sensing element
Improper air flow distribution
Check the air supply and return system
Low condensing pressure
Check whether the condenser is faulty
Compressor too
noisy
Liquid returned
Refer to the handling methods of “Low suction
pressure or liquid returned”
Bearing worn out due to lubricant loss
Add lubricant
Compressor over
temperature
Too high compression ratio
Check the settings of the HP value and LP value,
and inspect if the condenser is clogged.
Check that the fans of the evaporator and
condenser are normal
Too high suction overheat degree
Add proper amount of refrigerant
Regulation (EU) no. 517/2014 (F-gas)
Vertiv | Liebert CRD10 | User Manual 104
Chapter 8: Regulation (EU) no. 517/2014 (F-gas)
8.1 Introduction
Stationary air conditioners placed into the European Community market and operating with fluorinated
greenhouse gases (F-gas, such as R407C, R134a, R410A), have to comply with the F-gas Regulation (EU) No.
517/2014.
This Regulation is in force since Jan 1, 2015 an it replaces the Re. (EU) no. 342/2006.
This document summarizes the obligations for the operators that are responsible for the equipment during all
its operative life until its disposal.
8.2 Normative References
F-gas
517/2014
Regulation (EU) No 517/2014 of the European Parliament and of the Council of 16
April 2014 on fluorinated greenhouse gases and repealing Regulation (EC) No
842/2006.
Certified
personnel and
Companies
2015/2067
Commission Implementing Regulation (EU) 2015/2067 of 17 November 2015
establishing, pursuant to Regulation (EU) No 517/2014 of the European Parliament
and of the Council, minimum requirements and the conditions for mutual recognition
for the certification of natural persons as regards stationary refrigeration, air
conditioning and heat pump equipment, and refrigeration units of refrigerated trucks
and trailers, containing fluorinated greenhouse gases and for the certification of
companies as regards stationary refrigeration, air conditioning and heat pump
equipment, containing fluorinated greenhouse gases.
Leak check air
conditioning
1516/2007
Commission Regulation No 1516/2007 of 19 December 2007 establishing, pursuant to
Regulation (EC) No 842/2006 of the European Parliament and of the Council, standard
leakage checking requirements for stationary refrigeration, air conditioning and heat
pump equipment containing certain fluorinated greenhouse gases.
Leak check fire
protection
systems
1497/2007
Commission Regulation No 1497/2007 of 18 December 2007 establishing, pursuant to
Regulation (EC) No 842/2006 of the European Parliament and of the Council, standard
leakage checking requirements for stationary fire protection systems containing
certain fluorinated greenhouse gases.
From 01/01/2017 to be replaced by:
Commission Implementing Regulation (EU) 2015/2068 of 17 November 2015
establishing, pursuant to Regulation (EU) No 517/2014 of the European Parliament
and of the Council, the format of labels for products and equipment containing
fluorinated greenhouse gases.
8.3 Fluorinated Greenhouse Gases
Following notes have to be considered when operating with the above mentioned equipments:
• Fluorinated greenhouse gases are covered by the Kyoto Protocol.
• The fluorinated greenhouse gases in this equipment should not be vented to the atmosphere.
• Referring to the value noted in Annex I and Annex IV of Regulation (EU) No 517/2014 here below the global
warming potential (GWP) of some major F-gases or mixtures:
-- R-134a GWP 1430
-- R-407C GWP 1774
-- R-410A GWP 2088
Regulation (EU) no. 517/2014 (F-gas)
Vertiv | Liebert CRD10 | User Manual 105
NOTE: The refrigerants as R22 are not F-gas and their relevant regulation is Reg. (EU) no. 1005/2009.
8.4 Operators
8.4.1
Definitions
• Operator, according to Regulation 517/2014 Article 2, point 8, means the natural or legal person exercising
actual power over the technical functioning of products and equipment covered by this Regulation.
• The State may, in defined, specific situations, designate the owner as being responsible for the operator’s
obligations.
• Where large installations are involved, service companies are contracted to carry out maintenance or
servicing. In these cases the determination of the operator depends on the contractual and practical
arrangements between the parties.
8.4.2
Obligations
Operators of stationary air conditioners, which contain fluorinated greenhouse gases, shall, using all measures
which are technically feasible and do not entail disproportionate cost:
a Prevent leakage of these gases and as soon as possible repair any detected leakage.
b Ensure that they are checked for leakage by certified personnel.
c Ensure for putting in place arrangements for the proper recovery by certified personnel.
d According to Regulation 517/2014 the operators shall ensure that the equipment is checked for leaks as
following:
Case 1 - Non-sealed equipment contains less than 5 tonnes of CO 2 equivalent of fluorinated greenhouse
gases.
►►Leakage test not required
Case 2 - Hermetically sealed equipment contains less than 10 tonnes of CO 2 equivalent of fluorinated
greenhouse gases.
►►Leakage test not required
Case 3
►►Leakage test required:
check the equipment for leaks with the minimum frequency given in the following table:
X = Tonnes of
CO2 Equivalent
Y = equivalent amount of refrigerant [kg]
Minimum frequency for leak check
R134a
R410A
R407C
with leakage
detection
without leakage
detection
5 ≤ X < 50
3,5 ≤ Y < 35
2,4 ≤ Y < 24
2,8 ≤ Y < 28
12 Months
24 Months
50 ≤ X < 500
35 ≤ Y < 350
24 ≤ Y < 240
28 ≤ Y < 282
6 Months
12 Months
X ≥ 500
Y ≥ 350
Y ≥ 240
Y ≥ 282
3 Months
12 Months
Regulation (EU) no. 517/2014 (F-gas)
Vertiv | Liebert CRD10 | User Manual 106
e Recovery for the purpose of recycling, reclamation or destruction of the fluorinated greenhouse gases,
pursuant to Art. 8 of the Regulation 517/2014 shall take place before the final disposal of that equipment and,
when appropriate, during its servicing and maintenance.
8.5 Leakage Detection
The manufacturer approves the following leakage check methods according to Reg. 1516/2007 and Reg.
1497/2007:
Method
Specifications
a Check of circuits and components representing a risk of
leakage with gas detection devices adapted to the
refrigerant in the system
Gas detection devices shall be checked every 12 months to
ensure their proper functioning.
The sensitivity of portable gas detection devices shall be at
least five grams per year.
b Application of ultraviolet (UV) detection fluid or suitable
dye in the circuit
The method shall only be undertaken by personnel certified
to undertake activities which entail breaking into the
refrigeration circuit containing fluorinated greenhouse gases.
c Proprietary bubble solutions/soapsuds
---
8.6 Labelling
The label applied on the unit (see Onboard Label) is designed to fill-in the relevant amounts of refrigerant
according to Regulation 1494/2007 (2015/2068):
a Where fluorinated greenhouse gas is foreseen to be added to the equipment outside of the manufacturing
site at the point of installation, a dedicated label accommodates notation of both the quantity (kg) pre-
charged in the manufacturing plant and of the quantity charged at the installation site as well as the resulting
total quantity of F-gas as a combination of the above mentioned quantities, in a manner which conforms to
the legibility and indelibility.
Our split units are usually not pre-charged on factory, in this case the total quantity of refrigerant charged in
the unit has to be written in the relevant label, during the commissioning operation at the installation site.
All of the quantities of must be given both as mass of refrigerant [kg] and as Tonnes of CO2 Equivalent. Use
the following rule for computation:
where:
Refrigerant
GWP
R-134a
1430
R-407C
1774
R-410A
2088
b Our packaged units (not split) operating with F-gas are usually full charged on factory and the total amount of
refrigerant charge is already reported on the label. In this case, the label has no need of further written
information.
c In general, the above mentioned information has been located in the main nameplate of relevant unit.
Regulation (EU) no. 517/2014 (F-gas)
Vertiv | Liebert CRD10 | User Manual 107
d For equipment with double refrigeration circuits, in regards to differentiates requirements on the basis of the
quantity of F-gas contained, the required information about refrigerant charge quantities has to be listed
separately for each individual circuit
e For equipment with separate indoor and outdoor sections connected by refrigerant piping, the label
information will be on that part of the equipment which is initially charged with the refrigerant. In case of a
split system (separate indoor and outdoor sections) without a factory pre-charge of refrigerant, the
mandatory label information will be on that part of the product or equipment which contains the most
suitable service points for charging or recovering the fluorinated greenhouse gas(es).
NOTE: Safety data sheets of F-gases used in the products are available on demand.
8.7 Record Keeping
Operators of equipment which is required to be checked for leaks (see 8.5 Leakage Detection), shall establish
and maintain records for each piece of such equipment specifying the following information:
a The quantity and type of fluorinated greenhouse gases installed.
b The quantities of fluorinated greenhouse gases added during installation, maintenance or servicing or due to
leakage.
c Whether the quantities of installed fluorinated greenhouse gases have been recycled or reclaimed, including
the name and address of the recycling or reclamation facility and, where applicable, the certificate number.
d The quantity of fluorinated greenhouse gases recovered.
e The identity of the undertaking which installed, serviced, maintained and where applicable repaired or
decommissioned the equipment, including, where applicable, the number of its certificate.
f The dates and results of the leak checks carried out (see 8.5 Leakage Detection).
g If the equipment was decommissioned, the measures taken to recover and dispose of the fluorinated
greenhouse gases Unless the records are stored in a database set up by the competent authorities of the
Member States the following rules apply:
a The operators shall keep the records for at least five years.
b Undertakings carrying out activities for operators shall keep copies of the records for at least five years.
Appendix
Vertiv | Liebert CRD10 | User Manual 108
Appendix I: Display menu structure
<Main Menu>
<Run Infomation> <Alarm Information> <Temp/Hum Setting> <Temp/Hum Graph> <About>
<Teamwork Info>
<Switch Status><Tem/Hum Info> <Power Info>
Return Temp1
Return Hum
Return Temp2
Return Temp
Avg
Return Hum
Avg
Supply Temp1
Supply Temp2
Supply Temp
Avg
Supply Hum
Avg
Remote Temp 1
Remote Hum1
Remote Temp
Avg
Remote Hum
Avg
Filter Clogged
Switch
Cond Water
Overflow
Cond Water
Level SW
Low Pressure
Switch
Remote
Shutdown SW
Water
Underfloor SW
Heater Fail
Switch
Customer1
Switch
High Pressure
Switch
L1 Voltage
AC Frequency
#00 Unit Status
#01 Unit Status
#02 Unit Status
#03 Unit Status
#04 Unit Status
#05 Unit Status
#06 Unit Status
#07 Unit Status
#08 Unit Status
#09 Unit Status
#10 Unit Status
#12 Unit Status
#13 Unit Status
#14 Unit Status
#15 Unit Status
<Alarm Status>
<Alarm History>
<Temp Setting> <Hum Setting>
Supply Avg
Temp SP
Return Avg
Temp SP
Remote Avg
Temp SP
Supply Avg
Hum SP
<Paramater Setting>
Teamwork
Mode
Unit Address
Units Quantity
Standby
Quantity
Rotate At
Manual Rotate
Rotation Cycle
<Teamwork Setting> <Alarm Attribute>
Return High
Temp
Return Low
Temp
Return High
Hum
Return Low
Hum
Supply Low
Temp
Remote High
Temp
Supply High
Temp
Remote Low
Temp
<Communication Setting>
Monitor Protocol
Monitor
Baudrate
Monitor Address
<Time Setting>
Date Setting
Time Setting
<Display Setting> <Password Setting>
Language Level 1
Password
Level 2
Password
`
Rtn Avg Temp
Rtn Avg Hum
Sup Avg Temp
Rem Avg Temp
Version
Information
Control Software
Model
Control Software
Version
Display Software
Model
Display Software
Version
Service
Information
Return Temp3
<Alarm Setpoint>
High Sup Temp
Alarm SP
Low Sup Temp
Alarm SP
High Rtn Temp
Alarm SP
Rtn High Hum
Alarm SP
Rtn Low Temp
Alarm SP
Low Rtn Temp
Alarm SP
Rem High Temp
Alarm SP
Rem Low Temp
Alarm SP
Display Address
Rotate Daily
Run Standby
Delay
Cascade Mode
Cascade Start
Require
Cascade Stop
Require
Cascade Max
Require
Cascade Start
Delay
Cascade Stop
Delay
Cascade Min
Time
Appendix
Vertiv | Liebert CRD10 | User Manual 109
Appendix II: Display parameter list
Lv.1 Menu
Lv.2 Menu
Parameter
Run Information
Temp/Hum Information
Return Temp1
Return Hum
Return Temp2
Return Temp3
Return Temp Avg
Return Hum Avg
Supply Temp1
Supply Temp2
Supply Temp3
Supply Temp Avg
Supply Hum Avg
Remote Temp1
Remote Temp2
Remote Temp3
Remote Temp4
Remote Temp5
Remote Temp6
Remote Temp7
Remote Temp8
Remote Temp9
Remote Temp10
Remote Hum1
Remote Temp Avg
Remote Hum Avg
Switch Status
Filter Clogged Switch
Cond Water Overflow
Cond Water Level SW
Low Pressure Switch
High Pressure Switch
Remote Shutdown SW
Water Underfloor SW
Heater Fail Switch
Customer1 Switch
Power Information
L1 Voltage
AC Frequency
Appendix
Vertiv | Liebert CRD10 | User Manual 110
Lv.1 Menu
Lv.2 Menu
Parameter
Run Information
Teamwork Information
#00 Unit Status
#01 Unit Status
#02 Unit Status
#03 Unit Status
#04 Unit Status
#05 Unit Status
#06 Unit Status
#07 Unit Status
#08 Unit Status
#09 Unit Status
#10 Unit Status
#11 Unit Status
#12 Unit Status
#13 Unit Status
#14 Unit Status
#15 Unit Status
Alarm Information
Alarm Status
--
Alarm History
--
Temp/Hum Setting
Temp Setting
Supply Avg Temp SP, Default 23C (73.4F), Range 15 to 32C (59 to 89.6F)
Return Avg Temp SP, Default 32C (89.6F), Range 18 to 40C (64.4 to 104F)
Remote Avg Temp SP, Default 23C (73.4F), Range 15 to 32C (59 to 89.6F)
Hum Setting
Supply Avg Hum SP, Default 50%, Range 20% to 60%
Parameter Setting
Teamwork Setting
Teamwork Mode
Unit Address
Units Quantity
Standby Quantity
Rotation Quantity
Rotation Cycle
Rotate Daily
Rotate At
Manual Rotate
Run Standby Delay
Cascade Mode
Cascade Start Require
Cascade Stop Require
Cascade Max Require
Cascade Start Delay
Cascade Stop Delay
Cascade Min Time
Alarm Setpoint
Sup High Temp Alarm SP, Default 27C (80.6F), Range 20 to 35C (68 to
95F)
Sup Low Temp Alarm SP, Default 8C (46.4F), Range 5 to 20C (41 to 68F)
Rtn High Temp Alarm SP, Default 40C (104F), Range 30 to 45C (86 to
113F)
Rtn Low Temp Alarm SP, Default 18C (64.4F), Range 5 to 25C (41 to 77F)
Rtn High Hum Alarm SP, Default 60%, Range 50% to 99%
Appendix
Vertiv | Liebert CRD10 | User Manual 111
Rtn Low Hum Alarm SP, Default 15%, Range 1% to 50%
Rem High Temp Alarm SP, Default 27C (80.6F), Range 20 to 45C (68 to
113F)
Rem Low Temp Alarm SP, Default 10C (50F), Range 5 to 20C (41 to 68F)
Parameter Setting
Alarm Attribute
Return High Temp
Return Low Temp
Return High Hum
Return Low Hum
Supply High Temp
Supply Low Temp
Remote High Temp
Remote Low Temp
Communication Setting
Monitor Protocol
Monitor Baudrate
Monitor Address
Time Setting
Date Setting
Time Setting
Display Setting
Language
Display Address
Password Setting
Level 1 Password
Level 2 Password
Temp/Hum Graph
Rtn Avg Temp
--
Rtn Avg Hum
--
Sup Avg Temp
--
Rem Avg Temp
--
About
Version Information
Control Software Model
Control Software Version
Display Software Model
Display Software Version
Service Information
--
Appendix
Vertiv | Liebert CRD10 | User Manual 112
Appendix III: Alarms Table
Alarm Table
High Pressure Alarm
Low Pressure Alarm
Discharge High Temp
Discharge Low SH
Dsch High Temp Lock
High Pressure Lock
Low Pressure Lock
Dsch Low SH Lock
Return High Hum
Return Low Hum
Return High Temp
Return Low Temp
Supply High Temp
Supply Low Temp
Remote High Temp
Remote Low Temp
Loss Of Power
Power Overvoltage
Power Undervoltage
Power Freq Offset
Filter Clogged Alarm
Clogged Maintenance
Water Underfloor
Cond WOF
Loss Of Airflow
Loss Of Master Unit
Loss Of Slave Unit
Remote Shutdown
Return Temp Sensor1 Fail
Return Hum Sensor1 Fail
Supply Temp Sensor1 Fail
Supply Temp Sensor2 Fail
High Pressure sensor Fail
Low Pressure sensor Fail
Discharge Temp Sensor Fail
Suction Temp Sensor Fail
Remote Temp Sensor1 Fail
Remote Temp Sensor2 Fail
Remote Temp Sensor3 Fail
Remote Temp Sensor4
Fail
Remote Temp Sensor5 Fail
Remote Temp Sensor6 Fail
Remote Temp Sensor7 Fail
Remote Temp Sensor8
Fail
Remote Temp Sensor9 Fail
Remote Temp Sensor10 Fail
Heater Fail
10DI Comm Fail
EEV Driver Comm Fail
Comp Drv Comm Fail
Unit Addr Repeat
Comp Drv Protect00
Comp Drv Protect01
Comp Drv Protect02
Comp Drv Protect03
Comp Drv Protect04
Comp Drv Protect05
Comp Drv Protect06
Comp Drv Protect07
Comp Drv Protect08
Comp Drv Protect09
Comp Drv Protect10
Comp Drv Protect11
Comp Drv Protect12
Comp Drv Protect13
Comp Drv Protect14
Comp Drv Protect15
Fan1 Fail
Fan2 Fail
Fan3 Fail
Fan4 Fail
Customer1 Alarm
Smoke Sensor Fail
Fire Sensor Fail
Vertiv | Liebert CRD10 | User Manual 113
Fabbricante-Manufacturer-Hersteller-Fabricant-Fabricante
Fabricante- Tillverkare – Fabrikant – Valmistaja – Produsent
Fabrikant – Kατασκεναστηξ – Producent
Il Fabbricante dichiara che questo prodotto è conforme alle direttive Europea:
The Manufacturer here by declares that this product conforms to the European Union directives:
Der Hersteller erklärt hiermit, dass dieses Produkt den Anforderungen der europäischen Richtlinien
gerecht wird:
Le Fabrican déclare que ce produit est conforme aux directives Européennes:
El Fabricante declara que este producto es conforme a las directivas Europeas:
O Fabricante declara que este produto está em conformidade com as directivas Europeias:
Tillverkare försäkrar härmed att denna produkt överensstämmer med Europeiska Uniones direktiv:
De Fabrikant verklaart dat dit product conform de Europese richtlijnen is:
Vaimistaja vakuuttaa täten, että tämä tuote täyättää seuraavien EU-direktiivien vaatimukset:
Produsent erklærer herved at dette produktet er i samsvar med EU-direktiver:
Fabrikant erklærer herved, at dette product opfylder kravene i EU direktiverne:
kατασÀευαστρj δηλνξι ϋτι το παÃϋν πÃοϊϋν εβναι ÀατασÀευαmỲνο αỳm ωνα mε τιj οδηγβεj τηj E.E.:
2006/42/EC; 2014/30/EU; 2011/65/EU with its amendment (EU) 2015/863
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