Vertiv VRC202KIT-N User Manual
Displayed below is the user manual for VRC202KIT-N by Vertiv which is a product in the Rack Cooling Equipment category. This manual has pages.
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1
Vertiv I Liebert® ™ I User Manual
VRC Split System
VRC2 Series Rack Cooler
VRC3 Series Condensing Unit
User Manual
VRC Split System
User Manual
Version
V1.2
Revision date
Mar 18, 2020
BOM
31014128
Copyright by Vertiv Group Corp.
The content in this document is subject to change without notice. All rights, including rights of
translation, reproduced by printing, copying or similar methods and even of parts are reserved.
Violators will be liable for damages. All rights, including rights deriving from patent license or
registration of a utility model or design, are 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 Group Corp.
Notice
The purchased products, services and features are stipulated by the contract made between
Vertiv Group Corp. 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 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 recommendations in this document do not constitute a warranty of any
kind, express or implied.
Vertiv
United States
Australia & New
Indonesia
Malaysia
Singapore
Service Calls;
Zealand
Service Calls;
Service Calls;
Service Calls;
1-800-543-2378
Service Calls;
0817 988 2288
19 211 1668
64674218
General Inquiries;
1300 367 686
General Inquiries;
General
Inquiries;
General Inquiries;
1-800-543-2778
General Inquiries;
021 251 3003
3 7884 5000
64674218
1-800-222-5877
1800 065 345
Romania: 800477000
Egypt, Bahrain: 390499717744
Croatia: 800989019
Greece: 80044146622
Qatar: 800100439
UAE: 800035702985
Ghana: 242426263
Saudi Arabia: 8008446628
Nigeria: 7080601125
Non-listed Countries: 49872327750
Turkey: 800448826888
(Austria, Benelux, Czech Republic, France, Germany, Hungary, Ireland, Italy, Poland,
Russia, Spain, Sweden, Switzerland, UK, South Africa): 80011554499
Website: www.vertiv.com;
For Technical Support, users may contact the nearest Vertiv local sales office or service center.
Purpose of the Document
This document applies to the VRC2 series and VRC3 series of cooling solutions which maintain an optimal
environmental control mainly for technological ecosystems at minimal operating costs. This document gives
an overview of the technical specification. The figures used in this document are for reference only. Please
read this manual carefully.
Important Safety Instructions
The important safety instructions that should be followed during the installation and maintenance of the
VRC Split System are described in the following sections.
Read the manual prior to installation and operation of the unit. Only qualified personnel should move,
install, or service this equipment.
The user reads all of the precautions, compliance safety measures before working on the equipment. The
unit control must be used exclusively for the purpose for which it is intended; the manufacturer takes no
liability for incorrect use or modification to the unit control.
This manual is retained for the entire service life of the machine. The user must read all of the precautions,
danger, warnings cautionary measures mentioned in the manual prior to carrying out any operations on
the machine. Before performing any maintenance operation, switch off the machine to eliminate risks such
as electrical shocks, burns, automatic restarting, moving parts remote control.
Adhere to all the Warnings and Cautionary measures included in this manual. In the following sections,
look at the various cautionary measures and warnings that need to be read carefully prior to installing or
operating the system.
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! The components of the unit are comparatively large and heavy. Therefore, there may be a
risk when the containment collapses. The collapse may result in physical injury, fatality and damage
to the equipment.
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 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.
WARNING! Do not power on the unit until authorized technical personnel have confirmed that the
unit connections are correct.
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! During the operation of the precision air conditioner, very high voltage may be present in
the equipment. Adhere to all of the notes and warnings marked on the equipment or contained in
this manual, which may otherwise lead to an injury or fatality.
WARNING! Only qualified maintenance personnel can operate and handle the equipment. All
maintenance and operation must follow the local laws, especially the regulations about the electric
power, refrigeration, and production.
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.
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.
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.
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.
CAUTION: Comply with the manufacturer’s instructions before and during maintenance. Failure to
observe this will result in the warranty becoming void. Adherence to the safety instructions is
mandatory to ensure personnel safety and prevent any environmental impact apart from equipment
damage. Unsuitable components will impede equipment performance and may cause equipment
shutdown. Therefore, Vertiv recommends the use of Vertiv OEM or Vertiv-approved components.
CAUTION: Avoid touching or having skin contact with the residual gas and oils in the compressor.
Wear long rubber gloves to handle contaminated parts. The air conditioning system contains
refrigerant. The release of refrigerant is harmful to the environment.
CAUTION: Certain circuits carry lethal voltages. Only professional technicians are allowed to maintain
the unit. Extra precautions should be taken when troubleshooting a live unit. Be particularly careful
troubleshooting with the unit’s power switched on.
CAUTION: If jumpers are used for troubleshooting, make sure to remove the jumpers after
troubleshooting. If the connected jumpers are not removed, they may bypass certain control
functions causing damage to the equipment.
Preface
The Vertiv VRC2 series is a split-type cooling unit which should be installed at the bottom of the rack. It is
designed to be installed inside any 480 mm (19 in.) 2 or 4-post rack, including those developed by Vertiv.
The Vertiv VRC3 series is the split-type condensing unit designed for outdoor installation and must be
installed with the Vertiv VRC2 series to form a complete system.
This manual focuses on the using instructions, including overview, instructions for installation preparations,
mechanical installation, electrical installation, system startup and commissioning, controller operation,
system operation and maintenance troubleshooting, etc.
Please read this manual carefully before installing, maintaining and troubleshooting, especially the warning
information in the manual.
TABLE OF CONTENTS
Table of Contents
1 Product Overview .............................................................................................................................................. 1
1.1 Product Introduction ......................................................................................................................... 1
1.2 Model Description ............................................................................................................................. 2
1.3 Model Nomenclature ........................................................................................................................ 2
1.4 Components ...................................................................................................................................... 3
1.5 Technical Specifications ..................................................................................................................... 5
2 Pre-Installation ................................................................................................................................................. 10
2.1 Fittings ............................................................................................................................................. 10
2.2 Self-Prepared Materials ................................................................................................................... 10
2.3 Transportation and Movement ....................................................................................................... 11
2.4 Unpacking ........................................................................................................................................ 13
2.5 Equipment Installation Room Requirements .................................................................................. 15
2.6 Environment .................................................................................................................................... 16
2.7 Installation Space Requirements ..................................................................................................... 16
2.8 Clearance Space .............................................................................................................................. 17
2.9 Weight Bearing Capacity ................................................................................................................. 18
2.10 Inspection ........................................................................................................................................ 18
3 Mechanical Installation .................................................................................................................................... 19
3.1 Installation Notes ............................................................................................................................ 19
3.2 System Installation Layout ............................................................................................................... 19
3.3 Installing the Unit ............................................................................................................................ 21
3.4 Connecting the Copper Pipes to the Unit ........................................................................................ 28
3.5 Refrigerant Charge ........................................................................................................................... 32
3.6 Installation/Pre- commissioning Check List ..................................................................................... 34
4 Electrical Installation ........................................................................................................................................ 35
4.1 Installation Notes ............................................................................................................................ 35
4.2 Cable Connection ............................................................................................................................ 36
4.3 Communication Cable Connecting .................................................................................................. 39
4.4 Installation Inspection ..................................................................................................................... 40
5 Controller Operation Instructions .................................................................................................................... 41
5.1 LCD Screen ....................................................................................................................................... 41
5.2 Control Buttons ............................................................................................................................... 41
5.3 ON Screen ........................................................................................................................................ 42
5.4 Normal Screen ................................................................................................................................. 42
5.5 Unit Working Icons .......................................................................................................................... 43
5.6 Menu ............................................................................................................................................... 43
6 Startup Commissioning .................................................................................................................................... 48
6.1 Preparations Before Commissioning ............................................................................................... 48
6.2 Start-up Inspection Checklist ........................................................................................................... 48
6.3 System Commissioning .................................................................................................................... 48
6.4 Commissioning Complete Inspection .............................................................................................. 49
7 System Operation and Maintenance ............................................................................................................... 50
7.1 Safety Instructions ........................................................................................................................... 50
7.2 Electrical Inspection ........................................................................................................................ 50
7.3 Indoor Unit Maintenance ................................................................................................................ 51
7.4 Condensing Unit Maintenance ........................................................................................................ 52
7.5 Electrical Connection Maintenance................................................................................................. 53
7.6 Cooling System Maintenance .......................................................................................................... 54
7.7 Leakage Detection (F-gas) ............................................................................................................... 54
7.8 System Diagnosis Testing ................................................................................................................. 55
7.9 Maintenance Inspection Checklist .................................................................................................. 56
8 Troubleshooting ............................................................................................................................................... 57
8.1 Troubleshooting............................................................................................................................... 57
8.2 Fan Troubleshooting ........................................................................................................................ 58
8.3 Fault Diagnosis and Handling of Electronic Expansion Valve .......................................................... 58
8.4 Fault Diagnosis and Handling of the Air Conditioning System ........................................................ 59
Appendix I: System Diagram (Standard Unit) .......................................................................................................... 61
Appendix II: System Diagram (Low Ambient Unit) .................................................................................................. 62
Appendix III: Wiring Diagram (VRC200/VRC201 Unit) ............................................................................................. 63
Appendix IV:Wiring Diagram (VRC300/VRC301 Unit) ............................................................................................. 64
Appendix V:Wiring Diagram (VRC350/VRC351 Unit) .............................................................................................. 65
Appendix VI:Wiring Diagram (VRC202 Unit) ........................................................................................................... 66
Appendix VII:Wiring Diagram (VRC302 Unit) .......................................................................................................... 67
Appendix VIII:Wiring Diagram (VRC352 Unit) ......................................................................................................... 68
Suppliers Declaration of Conformity ....................................................................................................................... 69
1
Vertiv I VRC Split System I User Manual
PART I
GENERAL INFORMATION
1
Vertiv I VRC Split System I User Manual
1 Product Overview
The Vertiv™ - VRC2 series and VRC3 series are split-type cooling units for utilization in the rack which
does not permit any access to any unauthorized and unqualified personnel. If the rack is placed in
shopping malls, light industry, or any business environment, it must be used only by professionally
trained personnel. This chapter introduces the product description, model description, product
appearance main components of the cooling unit.
1.1 Product Introduction
The unit is a split-type conditioner which is designed to be installed inside the rack and includes a
separate indoor unit and outdoor condensing unit. The indoor unit installed in the rack unit, which
contains EC fan, evaporator coil and the electronic expansion valve. The condensing unit should be
mostly installed external to the room in which the rack is placed as it includes the compressor,
condenser coil and the condenser fan.
Primary technical details of the unit shown in Figure 1-1 are mentioned below:
• The unit can be installed
inside the rack.
• The airflow rate can be
modulated based on site conditions.
• The output cooling
capacity modulates as per the cooling load demands at
site.
• Operates on R410A
refrigerant.
• Quick installation and
deployment being of a modular construction
• Less work and cost for
installation compared to other air conditioner.
• White space-saving owing
to a relatively small-footprint and mounted inside the
rack utilizing lesser rack unit space.
• With the unit installed
inside the rack, the hot air from the rear side of the rack
is drawn inside the unit and cold conditioned air is
discharged from the front-side of the unit delivering it
right in front of the server’s intake side.
• The unit can be installed on both the top and bottom of
the rack inside the rack.
• The unit also can be installed at the ceiling outside the rack.
• The direction of supply air discharged from the front side of the unit can be changed by
adjusting the grilles, up or down.
• The cooling capacity is modulated automatically by the built-in control system and can range
from 25% to 100%, about 0.9 kW to 3.5 kW. This makes the unit best-suited for part-loads or
dynamic cooling loads.
• The unit is built-in with high efficiency and reliable components which include the compressor,
electronic expansion valve, EC-fan and an advanced controller specifically designed by Vertiv for
this unit.
• Utilizes EC-fan technology for the evaporator fan which saves energy by varying the airflow rate
Figure 1-1 Mounting location of
the Indoor unit
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Vertiv I VRC Split System I User Manual
exactly as per the requirement.
• The condensing unit is equipped with a variable speed condenser fan with a speed variation
ranging from 30% to 100% of the entire operating range.
1.2 Model Description
The physical appearance of air conditioner is shown in Figure 1-2.
Indoor unit Standard condensing unit
Low ambient condensing unit
Figure 1-2 Appearance of the air conditioner units
The indoor unit is installed in the rack or at the ceiling. The condensing unit is mounted external to
the rack, preferably outside in an exposed environment.
1.3 Model Nomenclature
The nomenclature of the units is shown in Figure 1-3.
Figure 1-3 Nomenclature
0 = 120 V, 1 Ph, 60 Hz
1 = 208/230 V, 1 Ph, 60 Hz
2 = 230V, 1 Ph, 50/60 Hz
0 = Standard Unit
5 = Low Ambient Unit
2 = Split System Indoor Unit
3 = Split System Condensing Unit
VRC=Vertiv Rack Cooler
VRC 2 0 0
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Vertiv I VRC Split System I User Manual
Table 1-1 mentions the description of the indoor and condensing units as per the nomenclature.
Table 1-1 Model coding description
Model
Power Supply
Part Code
Description
VRC200
120 V, 60 Hz
01304032
Indoor unit, 3.5 kW, 120 V
VRC300
208/230 V, 60 Hz
01304036
Condensing unit, 3.5 kW, 208/230 V for compressor
and 120 V for condensing fan
VRC350
208/230 V, 60 Hz
01304536
Low ambient condensing unit, 3.5 kW, 208/230 V for
compressor and 120 V for condensing fan
VRC201
208/230 V, 60 Hz
01304034
Indoor unit, 3.5 kW, 208/230 V
VRC301
208/230 V, 60Hz
01304035
Condensing unit, 3.5 kW, 208/230 V for compressor
208/230 V for condensing fan
VRC351
208/230 V, 60 Hz
01304537
Low ambient condensing unit, 3.5 kW, 208/230 V for
compressor 208/230 V for condensing fan
VRC202
230 V, 50/60 Hz
01304534
Indoor unit, 3.5 kW, 230 V
VRC302
230 V, 50/60 Hz
01304535
Condensing unit, 3.5 kW, 230 V for compressor 230 V
for condensing fan
VRC352
230 V, 50/60 Hz
01304538
Low ambient condensing unit, 3.5 kW, 230 V for
compressor 230 V for condensing fan
1.4 Components
The major components of the unit include the evaporator coil, condensate drain tray, evaporator EC
fan, electronic expansion valve (EEV), inverter rotary compressor, condenser coil and condenser fan
which are placed in the Indoor and the Condensing unit as shown below.
1.4.1 Indoor Unit
The components of the indoor unit are depicted in Figure 1-4.
Indoor fan
Suction
temp
Pressure
transducer
EEV
evaporator
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Vertiv I VRC Split System I User Manual
Figure 1-4 Indoor unit
• Evaporator Coil
The slant evaporator coil provides maximum surface area for heat transfer which ensures the
delivered SHR > 0.9 always. The coil is constructed from copper pipes with aluminum fins in a slit
type configuration. With low air pressure difference across the coil even at higher air flow rates, the
coil section is light and compact and has an easy access for removal and repair/replacement.
• Condensate Drain Tray
With a metallic condensate drain tray placed under the coil assembly, it is ensured that the entire
condensate drain has easy disposal/removal from the unit with a precise condensate outlet
connection.
• Evaporator EC Fan
The indoor unit is equipped with a high-efficiency EC fan made of aluminum
that delivers high airflow rates to ensure the airflow demands are met during
the entire operational time. The EC fan has a smooth speed variation across its
operating speeds that working in synchronization with the entire system
components to deliver the precise output capacity.
• Electronic Expansion Valve
The system is incorporated with an electronic expansion valve that monitors
temperature and pressure signals simultaneously to maintain precise
adjustment of the refrigerant flow. The electronic expansion valve can ensure
even flow distribution of each end.
1.4.2 Condensing Unit
The components of the condensing unit are depicted in Figure 1-5 and Figure 1-6.
Figure 1-5 Standard condensing unit internal parts
Inverter rotary
compressor
Condenser coil
Condenser fan
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Vertiv I VRC Split System I User Manual
Figure 1-6 Low ambient condensing unit internal parts
• Compressor
The condensing unit is equipped with an inverter rotary compressor that works
on R410A refrigerant and which varies its cooling output capacity as per the
cooling demands. It ensures that the cooling capacity of the unit precisely
matches the cooling demand under all circumstances.
• Condenser Coil
The L-shaped condenser coil is designed for a maximum contact area. It is
made of copper with aluminum slit fin configuration.
• Condenser Fan
The condensing unit is equipped with an AC fan which varies the operating
speed as per the cooling variations of the compressor to always maintain a
suitable condensing pressure.
• Low Ambient Module
The low ambient module is equipped with a receive, a solenoid valve and a head pressure control
valve. This module ensures that the air conditioner system can work at -34 °C (-29.2 °F).
1.5 Technical Specifications
The detailed technical specifications which include the mechanical and the electrical details are
mentioned in Table 1-2.
Condenser fan
Condenser coil
Receiver
Inverter rotary
compressor
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Vertiv I VRC Split System I User Manual
Table 1-2 Technical specifications
Parameters
Specification
Model
VRC200
VRC201
VRC202
VRC300
VRC301
VRC302
VRC350
VRC351
VRC352
Certification
UL 1995
(CSA C22.2 NO.236-11)
CE
(EN 60335-1;
EN 60335-2-40;
EN 55014-1;
EN 55014-2;
EN 61000-3-2;
EN 61000-3-3;
EN 50581)
UL 1995
(CSA C22.2 NO.236-11)
CE
(EN 60335-1;
EN 60335-2-40;
EN 55014-1;
EN 55014-2;
EN 61000-3-2;
EN 61000-3-3;
EN 50581)
UL 1995
(CSA C22.2 NO.236-11)
CE
(EN 60335-1;
EN
60335-2-40;
EN 55014-1;
EN 55014-2;
EN 61000-3-2;
EN 61000-3-3;
EN 50581)
Cooling
Capacity, kW
0.9 - 3.5
/
Air Volume,
m3/h (CFM)
750 (441)
/
Max Power
Input, kW
0.21
1.12
1.12
Input Voltage,
Vac
L1+L2+G,
120 Vac
L1+L2+G,
208/230 Vac
L+N+PE,
230 Vac
L1+L2+G,
208/230 Vac
L+N+PE,
230 Vac
L1+L2+L3+G,
208/230 Vac
L+N+PE,
230 Vac
Full Load
Amperage, A
2.1
1.7
1.5
7.2
7.2
6.5
7.2
7.2
6.5
Condenser Fan-
Full Load
Amperage, A
/
0.87
0.37
0.37
0.87
0.37
0.37
Liquid Line
Solenoid Valve -
Full Load
Amperage, A
/
0.13
0.08
0.08
Dimensions
(W×D×H, mm
(in.))
442×602×264
(17.40×23.70×10.39)
786×282×527
(30.94×11.10×20.75)
1158×282×527
(45.60×11.10×20.75)
Frequency, Hz
60
60
50/60
60
60
50/60
60
60
50/60
Color
EG7021 (Black)
G103 (White)
IP Code
/
IPX4 (IEC 60529)
IPX4 (IEC 60529)
Net Weight, kg
(lbs.)
23 (50)
44 (97)
68 (150)
Gross Weight,
kg (lbs.)
51 (112)
70 (154)
85 (187)
Noise Level
(tested within
the rack)
<60 dB(A)
<55 dB(A)
<55 dB(A)
Outdoor
Temperature
range, °C (°F)
/
-15 (5) to 45 (113)
-34 (-29.2) to 45 (113)
NOTES:
• There are two control methods which are supply air control and return air control. The return air
control mode is applied to an open environment, while the supply control mode is applied to a closed
rack.
• Supply air temperature set point varies between 12.8 °C (64.4 °F)- 23 °C (73.4 °F). The recommended
supply air temperature set point is 21 °C (69.8 °F).
• When the VRC unit is used in a closed rack, the heat load should be evenly placed in rack and unused
rack position should be covered with blanking plates.
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Vertiv I VRC Split System I User Manual
The maximum capacities vary with temperatures, as shown below.
Standard Condensing Unit
Maximum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to IT
Devices
(Supply Air Control)
19 °C
(66 °F)
3.7
3.6
3.6
21 °C
(70 °F)
3.9
3.8
3.8
23 °C
(73 °F)
3.9
3.8
3.8
Standard Condensing Unit
Maximum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to
Cooling Module
(Return Air Control)
29.4 °C
(85 °F)
3.4
3.3
2.8
35 °C
(95 °F)
3.8
3.7
3.2
40 °C
(104 °F)
4.0
3.9
3.4
Low Ambient Condensing Unit
Maximum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to IT
Devices
(Supply Air Control)
19 °C
(66 °F)
3.2
3.1
3.1
21 °C
(70 °F)
3.4
3.4
3.4
23 °C
(73 °F)
3.5
3.4
3.4
Low Ambient Condensing Unit
Maximum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to
Cooling Module
(Return Air Control)
29.4 °C
(85 °F)
3.1
3.0
2.5
35 °C
(95 °F)
3.5
3.4
2.9
40 °C
(104 °F)
3.6
3.5
3.0
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Vertiv I VRC Split System I User Manual
The minimum capacities vary with temperatures, as shown below.
Standard Condensing Unit
Minimum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to IT
Devices
(Supply Air Control)
19 °C
(66 °F)
0.92
0.90
0.88
21 °C
(70 °F)
0.94
0.92
0.90
23 °C
(73 °F)
0.96
0.94
0.92
Standard Condensing Unit
Minimum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to
Cooling Module
(Return Air Control)
29.4 °C
(85 °F)
0.92
0.90
0.88
35 °C
(95 °F)
0.94
0.92
0.90
40 °C
(104 °F)
0.96
0.94
0.92
Low Ambient Condensing Unit
Minimum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to IT
Devices
(Supply Air Control)
19 °C
(66 °F)
0.91
0.89
0.87
21° C
(70 °F)
0.93
0.91
0.89
23 °C
(73°F)
0.95
0.93
0.91
Low Ambient Condensing Unit
Minimum Capacity, kW
Condenser Air Temperature
29.4 °C
(85 °F)
35 °C
(95 °F)
40 °C
(104 °F)
Evaporator Air Temperature to
Cooling Module
(Return Air Control)
29.4 °C
(85 °F)
0.91
0.89
0.87
35 °C
(95 °F)
0.93
0.91
0.89
40 °C
(104 °F)
0.95
0.93
0.91
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Vertiv I VRC Split System I User Manual
PART II
INSTALLATION
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Vertiv I VRC Split System I User Manual
2 Pre-Installation
The air conditioner is an equipment and requires installation works. The preliminary preparation is
very important. This chapter details the pre-installation, including how to prepare the installation
environment and space and reserve the maintenance space, the air conditioner running and storage
environment requirement, and how to unpack and inspect. Please read this chapter carefully before
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.
2.1 Fittings
The fittings are shown in Figure 2-1.
Figure 2-1 Fittings
The usage of fittings is shown in Table 2-1.
Table 2-1 Fittings instruction
2.2 Self-Prepared Materials
The cables routed from the room to the unit and the circuit breakers must be prepared at the
customer site or are to be obtained by the customer; the specifications for the same are given in the
Table 2-2.
Fitting Utility
Usage
Quantity
M6 cage nut
Used with M6 pan-head screws for tightening pillars
6
M6 Pan-head screw
Used to install the VRC 20X unit
6
M5 center screw
Used to fasten the L-shape mounting rails
10
M6 Cage Nut
M6 Pan-head Screw
M5 Center Screw
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Vertiv I VRC Split System I User Manual
Table 2-2 Self-prepared materials
Parts
Specifications
External circuit breaker 1
Please refer to FLA (Full Load Amperage) of
indoor unit in Table 1-2
External circuit breaker 2
Please refer to FLA of condensing unit in
Table 1-2
Input power supply cables for indoor unit
Please refer to FLA of indoor unit in Table
1-2
Input power supply cables for condensing unit
Please refer to FLA of condensing unit in
Table 1-2
Cables for condenser fan
Please refer to FLA of condenser fan in Table
1-2
Cables for liquid line solenoid valve (only used in VRC350,
VRC351 and VRC352)
Please refer to FLA of liquid line solenoid
valve in Table 1-2
Liquid copper pipe
Please refer to pipe connection of unit
Gas copper pipe
Please refer to pipe connection of unit
Communication line between indoor and condensing unit
Communication line with RJ45 ports
2.3 Transportation and Movement
WARNING! The components of the unit are comparatively large and heavy. Therefore, there
may be a risk when the containment collapses. The collapse may result in physical injury,
fatality and damage to the equipment.
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.
The unit consists of an indoor unit and an outdoor unit. Both of them are comparatively heavy
equipment and need to be moved by hand pallet truck or electrical forklift to the vicinity of the
pre-decided location to be installed. Table 2-3, Figure 2-2 and Figure 2-3 show the dimensions of the
units component with the package.
Figure 2-2 Package dimensions – indoor unit
Forklift Direction
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Vertiv I VRC Split System I User Manual
Figure 2-3 Package dimensions – condensing unit
The unit with packing dimensions and weights are listed in Table 2-3:
Table 2-3 Packaging dimensions
Component
Packaging
Range of Dimensions
(Unit: mm (in.))
Weight with Package
(Unit: kg (lbs.))
H
W
D
Unit with
package
VRC200
VRC201
VRC202
Wooden
pallet with
cardboard
box
460
(18.11)
760
(29.92)
830
(32.68)
51
(112)
VRC300
VRC301
VRC302
750
(29.53)
480
(18.90)
970
(38.19)
70
(154)
VRC350
VRC351
VRC352
755
(29.72)
480
(18.90)
1350
(53.20)
85
(187)
Figure 2-4 depicts the schematic diagram of a hand pallet truck and an electric forklift.
Figure 2-4 A hand pallet truck and an electric forklift
If a hand pallet truck or an electric forklift truck is used, the tines of the hand pallet or electric forklift
must be aligned with the center of gravity to prevent the package from toppling or falling over as
depicted in Figure 2-5.
H
W
D
Forklift Direction
Forklift Direction
Electrical forklift
Hand pallet truck
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Vertiv I VRC Split System I User Manual
Figure 2-5 Forklift direction
While moving the package, the obliquity must be maintained at an angle of 90° ± 10°. Figure 2-6
depicts the 90° ± 10° obliquity is suitable to move the rack to the vicinity of the desired location.
Figure 2-6 Carrying obliquity
NOTES:
• Ensure that the equipment stands upright.
• While using the forklift or the hand pallet truck, ensure that the fork arms (if adjustable and flexible)
open to the greatest extent. This is done so that the fork arms can be placed under the pallet of the
equipment in a precise manner.
• Ensure that the length of the fork arms match with that of the equipment.
2.4 Unpacking
Following are the steps and procedures that are to be observed during the unpacking process:
2.4.1 Unpacking of Indoor Unit
• The unpacking of the indoor unit from the packing materials is shown in Figure 2-7. Move the
equipment of the assembled package to an open, firm leveled ground in the vicinity of the
predetermined installation site.
• Cut off the packing strip on the package paper box using a utility knife followed by removing the
package paper box of the unit.
• Remove the packing materials, including paper cover, support cardboard, paper box, cushion
and paper corner in a specific order as mentioned from the top side of the unit.
• Remove the unit from the wooden pallet.
Forklift Direction
Forklift Direction
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Vertiv I VRC Split System I User Manual
The accessory list of the indoor unit is shown in Table 2-4.
Figure 2-7 Unpacking indoor unit
Table 2-4 VRC2 series accessories
Sr No.
Item
Quantity
1
Drainage Kit
Condensate Pump and Pump Bracket
1
2
Condensate Water Pipe (7.5 m /24.6 ft.)
1
3
Drain fitting
1
4
Display kit
Display and Display Magnetic Box
1
5
10 m (32.8 ft.) Cable of Display
1
6
0.5 m (1.6 ft.) Cable of Display
1
7
SIC Card Kit
1
8
L-shape Mounting Rail Kit
2
9
Cage Nuts (M6)
6
10
Pan-Head Screws M6x12 (Torx T30)
6
11
Center Screws M5x12 (Torx T20)
10
12
USB Converter Cable
1
13
Cable Ties 100x2,5
10
14
User Manual
1
15
VRC Cooling Unit
1
2.4.2 Unpacking of Condensing Unit
• The unpacking of the condensing unit from the packing materials is shown in Figure 2-8.
• Move the equipment of the assembled package to an open, firm leveled ground in the vicinity of
the installation site.
• Cut off the packing strip on the package paper box using a utility knife followed by removing the
package paper box of the unit.
• Remove the packing materials, including paper cover, support cardboard, paper box, cushion
and paper corner in a specific order as mentioned from the top side of the unit.
• Remove the unit from the wooden pallet.
Condensate Pump
and Pump Bracket
SIC Card Kit
Drain fitting
L-shape Mounting Rail Kit
Cage Nuts (M6),
Pan-Head Screws M6×12 (Tor× T30),
Center Screws M5×12 (Tor× T20),
Cable Ties 100×2,5
Condensate Water Pipe,
USB Converter Cable,
Cables of display
VRC Cooling Unit
User Manual,
Display and Display
Magnetic Box
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Vertiv I VRC Split System I User Manual
Standard condensing unit Low ambient condensing unit
Figure 2-8 Unpacking condensing unit
NOTES:
• Packing materials of the unit are recyclable. Retain the packing materials for further use or dispose
them appropriately as per the protocols and local regulations.
The accessory list of the condensing unit is shown in Table 2-5.
Table 2-5 VRC3 series accessories
Sr No.
Item
Quantity
Model
1
Side Panel
2
VRC300
VRC301
VRC302
2
Front Panel
1
3
Screws (M4x10)
10
2.5 Equipment Installation Room Requirements
The requirements are as follows:
• To ensure the normal operation of environmental control system, the rack should be free from
air leakages that de-stabilize the temperature gradient and also could lead into moisture
occurrence.
• The rack should have appropriate thermal separation.
• The condensing air entering the equipment room should be reduced to a minimum as the entry
of condensing air may increase the load of the system. It is recommended that the leakage rate
of condensing air be kept below 5% of the total internal airflow.
• All the doors and windows should be closed properly to avoid any air infiltration from outside
into the room.
NOTES:
• Avoid locating the indoor unit in concave or narrow areas which can affect the airflow. It is prohibited
to use the cooling unit in an unconducive condensing environment.
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Vertiv I VRC Split System I User Manual
2.6 Environment
Following are the requirements that need to be observed from the environment point of view for site
preparation of the unit:
• CAUTION: Keep the unit in a place far away from sparks or any heat source.
• CAUTION: Emission of erosive gases and organic solvents should not be near the unit.
2.6.1 Operating Environment
The operation environment requirements are mentioned in Table 2-6.
Table 2-6 Operating environment
Item
Requirements
Installation position
The maximal equivalent length of piping between the indoor unit and
condensing unit [1]: 30 m (98.43 ft.)
Vertical distance ΔH [2]: -5 m (-16.40 ft.) ≤ ΔH ≤15 m (49.21 ft.)
Ambient temperature
Indoor: 18 °C-40 °C (64.4 °F-104 °F)
Standard condensing: -15 °C - 45 °C (5 °F -113 °F)
Low ambient condensing unit: -34 °C - 45 °C (-29.2 °F -113 °F)
Ambient humidity
<90% RH 30 °C (86 °F) (Non-condensing)
Protection level
Condensing unit: IPX4 (IEC 60529)
Altitude
< 1000 m (3280.84 ft.). For every 1000m increase in elevation, the evaporation
temperature drops by 0.5 °C (0.9 °F) the net cooling capacity drops by 7%.
Note:
[1] - For the equivalent length of parts, refer to Table 3-7.
[2] - The value is positive if the condensing unit is installed above the indoor unit; negative if the indoor
unit is installed above the condensing unit.
2.6.2 Storage Environment
The storage environment requirements are mentioned in Table 2-7.
Table 2-7 Storage environment
Item
Requirements
Storage environment
Clean (without dust)
Ambient humidity
< 95% RH 40 °C (104 °F) (Non-condensing)
Ambient temperature
-40 °C-70 °C (-40 °F -158 °F)
Storage time
The total shipment and storage time should not exceed 6 months. Otherwise,
the performance needs to be re-calibrated
2.7 Installation Space Requirements
The indoor unit is a specifically engineered air conditioning unit. It is recommended to install the
indoor unit inside the rack at the lowest rack unit space, as shown in the installation section.
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Vertiv I VRC Split System I User Manual
2.8 Clearance Space
2.8.1 Indoor Unit
To facilitate ease of installation and maintenance, enough space must be provisioned at site. When
the indoor unit is installed in room, the distance from the front and other sides of the unit to the wall
or other obstacles must be greater than 1000 mm (30.00 in.) and 600 mm (18.00 in.) respectively, as
shown in Figure 2-9. When the indoor unit is installed in the rack, the distance from the front and
rear sides of the rack to the wall or other obstacles must be greater than 1000 mm (30.00 in.) and
600 mm (18.00 in.) respectively.
Figure 2-9 The minimum distance for pull-out during maintenance (top view)
2.8.2 Condensing Unit
The required distance for installing condensing unit is shown in the following picture. For standard
unit, the recommended distance from the wall should be 200 mm (7.87 in.). For low ambient
condensing unit, the distance from the wall should be large enough to be maintained. And the
minimum distance from the front side (supply air side) of the condensing unit should be 450 mm
(17.72 in.) from any wall, obstacles or adjacent devices. It is a must to provide these clearance
distances as shown in Figure 2-10 and Figure 2-11 to ensure appropriate airflow across the
condensing unit.
600mm
[18'']
600mm
[18'']
600mm
[18'']
1000mm
[30'']
Wall
Back
Front
450mm
[17.72'']
450mm
[17.72'']
450mm
[17.72'']
200mm
[7.87'']
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Vertiv I VRC Split System I User Manual
Figure 2-10 Recommended clearance space required for standard condensing unit
Figure 2-11 Recommended clearance space required for low ambient condensing unit
2.9 Weight Bearing Capacity
The cooling unit will be installed inside the rack due to the concentrated floor loading of the rack will
increase. Therefore, the weight bearing capacity of the floor of the computer room must be taken
into consideration.
2.10 Inspection
• The unit is pre-charged. Check there is no refrigerant and oil leaks.
• Check the system fittings and its components against the packing list to ensure that everything is
in its designated position and the entire product assembly is intact.
• If any parts or components are missing or damaged, immediately report to the carrier about the
same. If hidden damages are observed, then contact the local offices of that carrier as well as
Vertiv Group Corp. at the earliest.
450mm
[17.72'']
200mm
[7.87'']
450mm
[17.72'']
450mm
[17.72'']
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Vertiv I VRC Split System I User Manual
3 Mechanical Installation
Proper installation is essential to achieve the intended design performance of the equipment and to
maximize its service life. This chapter describes the mechanical installation of cooling system,
including installation notes, system installation layout, end installation, unit piping installation,
installation finishing work and installation check. This section should be used in conjunction with
current mechanical and electrical installation regulations.
3.1 Installation Notes
NOTES:
• The indoor unit needs to be installed inside the rack or in room.
• Before installation, make sure that the installation environment meets the requirements and there
must be sufficient provision for connecting the condensate drain line to the drain point.
• Follow the design drawings strictly when installing the equipment and reserve the space for
maintenance. The manufacturer’s engineering dimensions drawings can serve as a reference.
• It needs 2 persons during installation.
• Torx bits T20 and T30 are needed during installation, as shown in Figure 3-1.
Figure 3-1 Torx bits
3.2 System Installation Layout
The overall layout of the unit which comprises of both the indoor unit and the condensing unit is
depicted in Figure 3-2, Figure 3-3 and Figure 3-4.
Figure 3-2 Indoor unit
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Vertiv I VRC Split System I User Manual
Figure 3-3 Standard condensing unit
Figure 3-4 Low ambient condensing unit
The dimensions of indoor unit and condensing unit are listed in Table 3-1:
Table 3-1 Dimensions of indoor and condensing unit
Component
Range of Dimensions (Unit: mm (in.))
H
W
D
Indoor Unit
VRC200
VRC201
VRC202
264
(10.39)
442
(17.40)
602
(23.70)
Condensing Unit
VRC300
VRC301
VRC302
527
(20.75)
786
(30.94)
282
(11.10)
VRC350
VRC351
VRC352
527
(20.75)
1158
(45.60)
282
(11.10)
Each standard condensing unit (VRC300, VRC301, VRC302) has a set of air deflector. The dimension
of the air deflector is shown in the Table 3-2.
Table 3-2 The dimension of the air deflector
Component
Range of Dimensions (Unit: mm (in.))
h
w
d
Standard Condensing
Unit
VRC300
VRC301
VRC302
500
(19.68)
563
(22.17)
233
(9.17)
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Vertiv I VRC Split System I User Manual
3.3 Installing the Unit
3.3.1 Installing the indoor unit inside the rack
A front view intricate detailed image depicting the dimensions which would help enable to mount
the unit inside the rack are shown in Figure 3-5 and Figure 3-6.
Figure 3-5 Indoor unit dimensions
Figure 3-6 The front view of indoor unit
The detailed dimensions of the indoor unit with their weights are mentioned in Table 3-3.
Table 3-3 Dimensions of cooling unit
Model
Dimensions (W × D × H, mm (inch))
Net Weight (kg. (lbs))
Cooling unit
442 × 602 × 264
(17.40×23.70×10.39)
23.0 (50.7)
1. Mounting the L-shaped rails in the rack
Each of the two L-shape rails are comprised of two parts, a long front rail and a slotted rear bracket,
as shown in Figure 3-7. There are left and right VRC rails. The flanges of each of the front rails should
be on the bottom and pointing toward the center of the rack. Slip the slots in the rear rail bracket
over the pressed studs in the front rail part. Loosely fasten with nuts. Fasten the ends of the front
rails and rear brackets to the uprights using center screws M5x12 T20. Torque=4.0 Nm (2.95 ft.-lb.).
Once in place, tighten the nuts on the front rail part studs. Torque = 5.6 Nm (4.13 ft.-lb.).
W
H
D
491.6 mm
[19.35'']
465.0 mm
[18.31'']
442.0 mm
[17.40'']
263.5 mm
[10.37'']
219.0 mm
[8.62'']
146.0 mm
[5.75'']
Φ7.2 mm
[0.28'']
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Vertiv I VRC Split System I User Manual
Figure 3-7 L-shape rails installation
2. Inserting the indoor unit into the rack
Insert the indoor unit into the front of the rack until the its front brackets are against the rack’s
uprights.
3. Fastening the indoor unit
Fasten the indoor unit front brackets to both front uprights using four M6 cage nuts and M6x12 T30
screws (5.6 Nm/4.13 ft.-lb. torque), as shown in Figure 3-8.
Figure 3-8 Indoor unit installation
NOTES:
• Make sure the indoor unit is installed horizontally, otherwise high-water level alarms may be triggered
incorrectly.
• For installation in a 2-post rack, please purchase accessory 2POSTRMKITVRC. Installation instructions
are included with this rail kit.
3.3.2 Installing the Condensing Unit
The physical appearance of the condensing unit is shown in Figure 3-3 and Figure 3-4. The top view
of the standard condensing unit is shown in Figure 3-9 and the low ambient condensing unit is shown
in Figure 3-10.
Left VertivTM VRC
front rail
Left VertivTM
VRC slotted
rear bracket
Cross section of VertivTM VRC-S
shown for Illustrative purposes.
Slotted rear
bracket
Slotted rear
bracket
Front rail part
Front rail part
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Vertiv I VRC Split System I User Manual
Figure 3-9 Standard condensing unit top view
Figure 3-10 Low ambient condensing unit top view
Table 3-4 Condensing unit dimensions
Model
Dimensions (W × D × H, mm
(in.))
Net Weight (kg (lbs.))
VRC300
VRC301
VRC302
786×282×527
(30.94×11.10×20.75)
44.0 (97.0)
VRC350
VRC351
VRC352
1158×282×527
(45.60×11.10×20.75)
68.0 (149.9)
The condensing unit must be installed vertically. The condensing unit can either be installed higher
than the indoor unit or lower than the indoor unit. Figure 3-11 shows the scenario where the
condensing unit is installed higher than the indoor unit. When installing the condensing unit 7.5m
higher than the indoor unit, a trap should be installed on the discharge pipe. This trap will retain
refrigerant oil in the off cycle of the compressor. When the compressor starts, oil in the trap will be
carried up the vertical riser and return to the compressor immediately.
829mm
[32.6'']
696mm
[27.4'']
298mm
[11.7'']
530mm
[20.9'']
R5mm
[R0.2'']
563mm
[22.2'']
1206mm
[47.5'']
1073mm
[42.2'']
316mm
[12.4'']
298mm
[11.7'']
R5mm
[R0.2'']
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Vertiv I VRC Split System I User Manual
Figure 3-11 The Condensing unit is installed higher than the indoor unit
Figure 3-12 shows the scenario where the condensing unit is installed lower than the indoor unit.
Figure 3-12 The Condensing unit is installed lower than the indoor unit
Outdoor unit
Liquid side pipe (no direct sunlight)
Isolation floor
Wall bushing
Trap
Cabinet
Indoor unit
Max
7.5m
[24.60 ft]
Sealing on inlets
Gas side pipe
Heat insulation
material
Floor
Drain pipe of condensate
water (extend to outdoor to
drain condensate water)
1:200
15m
[49.21ft]
Drain pipe of condensate
water (extend to outdoor to
drain condensate water)
1:200
Sealing on inlets
Gas side pipe
Heat insulation
material
Floor
Liquid side pipe (no
direct sunlight)
Isolation floor
Wall bushing
Outdoor unit
Cabinet
Indoor unit
Max
5m
[16.40ft]
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Vertiv I VRC Split System I User Manual
Table 3-5 shows the vertical distance between the indoor and the condensing unit.
Table 3-5 Vertical distance between Indoor unit and Condensing Unit
Relative Position
Value
Condensing unit installed higher than indoor unit
Maximum: 15 m (49.21 ft.)
Condensing unit installed lower than indoor unit
Maximum: 5 m (16.40 ft.)
Following are the steps that need to be observed for the regular installation of the condensing unit:
1. Place the condensing unit on the base
2. Use expansion bolts to fix the condensing unit on the base.
If there are multiple condensing units, they need to be placed on top of the other. The method to
implement placement of the condensing units on top of the other is shown in Figure 3-13.
Following points need to be taken during the installation of the condensing uni.
NOTES:
• The condensing unit must be placed appropriately in a safe place for maintenance. It also should not be
installed on the bottom floor of the public site. It should not be kept in a residential area.
• It should not be kept in an environment where noise levels are considered crucial.
• Keep the condensing unit in a clean environment, free of debris, dust foreign matter. This is done to
avoid blocking of the heat exchanger and ensure an efficient cooling effect.
• There should be no steam, hot gas exhaust gas near the condensing unit.
• Preferably, keep above 450 mm between the condensing unit and the wall, obstacles, or adjacent
devices. For Standard condensing unit, if the condensing unit will be installed in an outdoor
environment, the recommended distance of the back side (return air side) from the wall should be 200
mm (7.87 in.). It is a must to provide these clearance distances to ensure appropriate airflow across the
condensing unit.
• Avoid keeping the condensing unit in places where snow may accumulate in the air intake side and air
outlet side.
• Preparing a base to bear the weight of the condensing unit is important where the base should be at
least 50 mm (1.97 in.) higher than the ground and 50 mm (1.97 in.) wider than the condensing unit
base.
• The condensing is around 44 kg (97 lbs.); therefore, utmost care must be taken while removing it; any
mishandling will result in severe injury and damage to the equipment.
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Vertiv I VRC Split System I User Manual
Figure 3-13 Installing multiple condensing units one above the other
3.3.3 Installing the drain fitting to the indoor unit
Fasten the drain fitting to the drain port of the indoor unit, as shown in Figure 3-14. The drain fitting
contains a sealing block, which is used for preventing the water leaking from the drain fitting port.
Make sure the sealing block is installed tightly.
Figure 3-14 Installing the drain fitting
Airflow
Min. 50mm [1.97 in.]
50mm
[1.97 in.]
50mm
[1.97 in.]
Bracket
Out-
door
unit
Out-
door
unit
Airflow
4m
[13.12 ft.]
0.2m
[0.66 ft.]
Note:
1. Use 5# angle iron for bracket, when two
units are installed with one above the
other.
2. Use 6.5# channel steel for bracket,
when three units are installed with one
above the other.
Drain Fitting
Sealing Block
Drain Fitting
Base
Outdoor unit base
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Vertiv I VRC Split System I User Manual
3.3.4 Installing the condensate pump
NOTES:
• Please finish the cable connection in chapter 4 first, otherwise it will be difficult to connect the cables.
1. Divide the pump bracket into part 1 and part 2, as shown in Figure 3-15 and Figure 3-16.
Figure 3-15 Appearance of pump bracket
Figure 3-16 Internal structure of water pump bracket
2. Install the power cord and the L-shape pipe, as shown in Figure 3-17.
Figure 3-17 Internal structure of water pump bracket
3. Loosen the four screws in Figure 3-17 about 4 turns.
4. Slide the pump bracket part 1 on L-shape mounting rail, as shown in Figure 3-18.
Figure 3-18 Installation of the pump kit
5. Install L-shape pipe to drain fitting, and fix it with a cable tie, as shown in Figure 3-18.
6. Fix the pump bracket part 1 with tightening the 4 screws in Figure 3-17.
7.Install pump bracket part 2 to pump bracket part 1 with tightening the 2 screws in Figure 3-19.
Pump bracket
part 1
Pump bracket
part 2
Pump bracket
part 1
Screws (M5 x12)
L-shape pipe
Power cord
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Vertiv I VRC Split System I User Manual
Figure 3-19 Installation of the pump bracket part 2
There are an anti-Siphoning device and a condensate water pipe in indoor unit package. The
anti-Siphoning device is used to prevent siphonage and should be installed vertically on the pipe. The
condensate water pipe can be used to extend drainage lines.
Figure 3-20 Anti-Siphoning device and condensate water pipe
3.4 Connecting the Copper Pipes to the Unit
For standard condensing unit, before connecting the copper pipes, it is needed to install the air
deflector first as shown in Figure 3-21.
Figure 3-21 Air deflector installation for standard condensing unit
In this section, the general principles of connecting copper pipes, installation information about the
connectors and the required pipe connections will be explained in detail. Figure 3-22, Figure 3-23
and Figure 3-24 show connectors on both the indoor and the condensing unit.
General Principles
• Copper pipes with quick thread connectors must be used to connect the indoor and condensing
unit. If the pipe length exceeds the standard pipe length and a straight copper pipe is used, in
that case, piping joints must be brazed.
• Follow standard industry practices in selection and placement of pipes, system evacuation
charging with refrigerant (only when the pipeline is long). The standard refrigerant of the unit is
R410A. The charging amount for low ambient condensing unit is 4.0kg (8.82 lbs), while other
units is 1.3 kg (2.87 lbs).
Pump bracket
part 2
STAINLESS STEEL PAN HEAD SCREW
* 4PCS
FRONT PANEL *1PCS
SIDE PANEL *2PCS
AIR DEFLECTOR
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Vertiv I VRC Split System I User Manual
• Take the pipeline pressure drop and the oil return to the compressor into consideration to avoid
oil leakage and clogging in parts of the system. Utmost care while considering these factors
minimizes the noise and vibration significantly.
• If an extended piping kit is required or if the equivalent length exceeds 20 m (65.62 ft.), it’s
necessary to add a check valve at the liquid pipe outlet of the condensing unit. Also, consult
your local Vertiv Sales Office, if the vertical distance between the indoor unit and condensing
unit exceeds 15 m (49.21 ft.).
Figure 3-22 Connectors of indoor unit
Figure 3-23 Connectors of standard condensing unit
Figure 3-24 Connectors of low ambient condensing unit
• Use thermal insulation material to cover quick thread connectors of both indoor and condensing
units, after completing the installation and commission, as shown in Figure 3-25.
Liquid pipe: 3/8''
Connector: 5/8'' -18UNF
Suction pipe: 1/2''
Connector: 3/4'' -16UNF
Drain pipe: 1/2 NPT
Liquid pipe: 3/8''
Connector: 5/8'' -18UNF
Suction pipe: 1/2''
Connector: 3/4'' -16UNF
Liquid pipe: 3/8''
Connector: 5/8'' -18UNF
Suction pipe: 1/2''
Connector: 3/4'' -16UNF
Needle Valves
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Vertiv I VRC Split System I User Manual
Figure 3-25 Keep copper piping and quick thread connector insulation
Installation Notes of the connector
Both top as well as the bottom piping method are compatible with the unit. The connectors of the
unit are located on the indoor unit and condensing unit. Utmost care must be taken while connecting
the quick thread connector.
Read the following steps thoroughly before making the connection:
• Remove the dust-proof caps.
• Wipe the coupling seats and threaded surface with a clean cloth carefully.
• Lubricate the male thread with refrigerant oil.
• Thread the coupling halves together manually (by hand) to ensure that the threads mate
properly.
• Tighten the coupling body’s hexagon nut and union valve until a definite resistance is felt.
• Use a marker to draw a line lengthwise from the coupling unit to the bulkhead. Tighten the nuts
by an additional quarter turn with a wrench (22 mm for liquid pipe, 24 mm for suction pipe).
The misalignment of the lines depicts how much the coupling has been tightened. The final
quarter turn is essential to ensure that the joint doesn’t leak.
NOTES:
• The maximal equivalent length of piping between the indoor unit and condensing unit is 30 m (98.43
ft.).
The Table 3-6 prescribes the equivalent length of the piping to be considered in the liquid line piping
for the bends and the elbows connector devices.
Table 3-6 Equivalent length for bends and valves
Liquid Pipe OD
(mm (inch))
Equivalent Length (m (ft.))
90° bend
45°bend
180° U bend
90° shut-off valve
Check valve
9.52 (3/8)
0.44
(1.44)
0.22
(0.72)
0.65
(2.13)
1.8
(5.91)
1.6
(5.25)
12.7 (1/2)
0.50
(1.64)
0.25
(0.82)
0.75
(2.46)
2.1
(6.90)
1.9
(6.23)
The procedure for fitting the connectors of the condensing unit are mentioned in Figure 3-26. The
same can be replicated for fitting the connectors of the indoor unit.
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Vertiv I VRC Split System I User Manual
Figure 3-26 Tightening the connectors of the condensing unit
The recommended torque values are listed in Table 3-7.
Table 3-7 Torque value for tightening the piping connections
Coupling Size
Torque Value (Nm (ft.-lb.))
3/4” - 16UNF
25 – 32 (18-24)
5/8” - 18UNF
15 – 20 (11-15)
Required Pipe Connections
Following steps must be implemented during connection of the refrigerant pipe between the indoor
unit and the condensing unit.
• The liquid pipe functions as the refrigerant liquid pipe of the condensing unit outlet. Select an
appropriate pipe diameter and length for the pipe to ensure that the pressure drop of the
refrigerant liquid through the pipe during the unit operation doesn’t exceed 40kPa (5psi
6psi).
• Install and remove the pipe with utmost care to prevent it from getting damaged. Use tube
benders and ensure that all the bends are made accurately prior to making connections to
either end.
• If the jointing mode is required, ensure all the refrigerant piping connections are made with
silver blazed joints.
• Check all the piping supports, leakage testing, dehydration of refrigerant pipes evacuation
before usage. Use vibration isolation support to isolate the refrigeration pipes from the building.
• Use soft and flexible material for packing around the pipes to protect them from damage caused
due to openings in walls and to reduce vibration transmission.
• Use a thermal insulation material to cover the connecting copper piping and the quick thread
connectors of the indoor unit and condensing unit to ensure good performance of the unit.
• Connect pipes of the indoor and condensing units based on the labels. The unit adheres to the
quick connection mode.
• The unit has been charged with appropriate refrigerant and refrigerant oil (FV50S) before
delivery. However, if the connecting pipe between the condensing unit and indoor unit is longer
than 10m (32.8 ft.), add the refrigerant and refrigerant oil (FV50S) to the system to ensure
normal system operation.
• When installing the condensing unit 7.5m higher than the indoor unit, a trap should be installed
on the discharge pipe. This trap will retain refrigerant oil in the off cycle of the compressor.
Tighten with a wrench
Torque for gas line, thread 3/4'' -16UNF, 25-32 Nm (18-24 ft.-Ib.)
Torque for liquid line, thread 5/8'' -18UNF, 15-20 Nm (11-15 ft.-Ib.)
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Vertiv I VRC Split System I User Manual
When the compressor starts, oil in the trap will be carried up the vertical riser and return to the
compressor immediately.
Refrigerant and refrigerant oil must be added in accordance with the following formula:
Refrigerant and refrigerant oil amount to be added (kg (lbs.)) = Adding refrigerant and refrigerant
oil amount per meter of the liquid pipe (kg/m (lbs./ft.)) × total length of the extended liquid pipe
(m. (ft.))
Table 3-8 shows the refrigerant and refrigerant oil amount to be added per meter of the liquid pipe.
Total length of the extended liquid pipe (m (.)) = Total length of the liquid pipe (m (ft.)) – 10.0 m (ft.
(32.8))
Table 3-8 Additional refrigerant and refrigerant oil
Adding Refrigerant Amount per Meter kg/m
(lbs./ft.)
Adding Refrigerant Oil (FV50S) Amount per Meter ml/m
(ml/ft.)
0.050 (0.034)
13.0 (4.0)
NOTES:
• Risk of oil contamination with water. Can cause equipment damage. VRC 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.
• Risk of improper refrigerant charging. Can cause equipment damage.Refrigerant charge must be
weighed into air-cooled compressorized systems before they are started.
3.5 Refrigerant Charge
The unit is usually pre-charged with the rated amount of refrigerant in factory, and the connectors of
the liquid and the suction lines are closed. The suction and liquid pipe should be filled with 27 bar
nitrogen at the needle valves on suction and liquid pipe connectors for at least 3 hours to check for
any leakage in the piping and connections. If there is no leakage observed, vacuum the liquid and
suction lines at the needle valves. Open the connectors of the liquid and the suction lines after
evacuation.
If the unit is not pre-charged, it is necessary to add refrigerant, as shown in Table 3-9. Open the
connectors of suction and liquid pipe, then the suction and liquid pipe should be filled with 27 bar
nitrogen at the needle valves on suction and liquid pipe connectors for at least 3 hours to check for
any leakage in the piping and connections. If there is no leakage observed, vacuum the unit at the
needle valves. Add refrigerant to air conditioner after evacuation.
For standard unit, position of needle valves for vacuuming and charging the refrigerant is shown
Figure 3-27.
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Vertiv I VRC Split System I User Manual
Figure 3-27 Charging the refrigerant gas
For low ambient condensing unit, position of needle valves for vacuuming and charging the
refrigerant is shown Figure 3-30. There is a receiver in the low ambient condensing unit. Point 1 and
2 represent the needle valves, point 3 represents a needle valve at the inlet of the receiver depicted
in Figure 3-28. When vacuuming or charging the refrigerant, it should be carried out simultaneously
from the three points. Especially when vacuuming, it must be vacuumed at point 3, otherwise the
vacuum will fail.
Figure 3-28 Vacuuming and charging for low ambient condensing unit
If it is necessary to add more refrigerant and refrigerant oil, please contact Vertiv for technical
assistance. For the exact amount of refrigerant and refrigerant oil to be charged in the system, refer
to Table 3-8 and Table 3-9.
Table 3-9 Amount of refrigerant to be charged in the system
Unit Type
Refrigerant Type
Refrigerant Charge (kg (lbs.))
VRC200/VRC300
R410A
1.30 (2.87)
VRC201/VRC301
VRC202/VRC302
VRC200/VRC350
4.00 (8.82)
VRC201/VRC351
VRC202/VRC352
Needle valves for vacuuming
and charging
Pressure Gauge 2
Pressure Gauge 1
Vacuum or Charge
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Vertiv I VRC Split System I User Manual
3.6 Installation/Pre- commissioning Check List
After the unit is mounted with the all the necessary mechanical connections done, it is necessary to
re-check the installation as per the pre-commissioning checklist per Table 3-10.
Table 3-10 Mechanical Installation Checklist
Items
Results
Sufficient space for maintenance activities at site
Ensure all the fittings are connected firmly.
The placement direction of the indoor unit is correct, pay attention to that the supply
air is sent to the cold aisle at the front, the hot air is drawn back to the return air inlet
of the unit at the back.
Foreign materials in and around the equipment are removed (such as shipping
materials, removed construction materials, tools so on)
The condensate pump and pipes are connected properly
All pipe joints are firmly fixed
All pipe connectors and fasteners are tightly fastened.
After all these items are checked and confirmed, continue with the electrical installation works of the
unit.
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Vertiv I VRC Split System I User Manual
4 Electrical Installation
This chapter describes the electrical installation of unit, including installation noted, cable connection,
communication cable connection and installation inspection.
4.1 Installation Notes
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 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.
WARNING! Do not power on the unit until authorized technical personnel have confirmed that
the unit connections are correct.
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.
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Vertiv I VRC Split System I User Manual
4.2 Cable Connection
It is required to install circuit breakers between the unit and the power supply. The circuit breakers
can be selected based on the FLA of unit that is mentioned in Table 4-1.
The cable connections for the indoor unit are done through the cover panel at the back-side of the
unit as shown in Figure 4-1.
Figure 4-1 Cover panel for cabling connections
The power cables can be selected based on the amperage ratings for each component that is
mentioned in Table 4-1.
Table 4-1 Current Ratings of Components
Unit
Type
Input
Voltage
Frequency
FLA of
Compressor
(A)
FLA of Liquid
Line Solenoid
Valve (A)
FLA of Outdoor
Fan (A)
FLA of
Unit (A)
VRC200
120 Vac
60 Hz
-
-
-
2.1
VRC201
208/230 Vac
60 Hz
-
-
-
1.7
VRC300
208/230 Vac
60 Hz
7.2
-
0.87
7.2
VRC301
208/230 Vac
60 Hz
7.2
-
0.37
7.2
VRC202
230 Vac
50/60 Hz
-
-
-
1.5
VRC302
230 Vac
50/60 Hz
6.5
-
0.37
6.5
VRC350
208/230 Vac
60 Hz
7.2
0.13
0.87
7.2
VRC351
208/230 Vac
60 Hz
7.2
0.08
0.37
7.2
VRC352
230 Vac
50/60 Hz
6.5
0.08
0.37
6.5
Back Plate
Place for Cable connection
Outdoor fan
hole
Indoor Cable
hole
Cover panel
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Vertiv I VRC Split System I User Manual
The cables of the indoor and the condensing units are depicted in Figure 4-2 and Figure 4-3.
Figure 4-2 Overview of the cabling connections (Standard condensing unit)
Figure 4-3 Overview of the cabling connections (Low ambient condensing)
Detailed input cabling connections of the indoor unit power terminal are shown in Figure 4-4.
Figure 4-4 Input Cabling connections – Indoor Power terminal
Display board
Indoor Power
Outdoor Power
Outdoor fan control
Communication RS485
Display board
Indoor Power
Outdoor Power
Outdoor fan control
Communication RS485
LLSV
RJ45-1/RJ45-2
Compressor
communication line
Display board plug
Terminal block for LLSV Power
and Outdoor Fan Power
Grounding
screw 2
Grounding
screw 1
Terminal block
for Input Power
Cable clamp 1
Cable clamp 3
Cable clamp 2
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Vertiv I VRC Split System I User Manual
Input cabling connections of the condensing unit power terminal block are shown in Figure 4-5
Figure 4-5 Input Cabling connections – Condensing Power terminal
Detailed input cabling connections of the condensing unit electric box are shown in Figure 4-6 and
Figure 4-7.
Figure 4-6 Standard condensing unit electric connection illustration
Cover plate
Outdoor unit
communication
terminal block
Input power
terminal block
Outdoor fan
terminal block
sealing strip
Cross head screw
M4*10 × 8PCS
Terminal block
for Input Power
Inner cable hole
Terminal block for
Outdoor Fan Power
Grounding
screw2
Grounding
screw1
Compressor
communication
line
Cable
clamp1
Cable
clamp2
Cable
clamp3
External cable hole
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Vertiv I VRC Split System I User Manual
Figure 4-7 Low ambient condensing unit electric connection illustration
4.3 Communication Cable Connecting
4.3.1 Display cable connection
Two display cable shall be provided in the accessories kit. Insert one end of the cable into the display
board plug, connect the other end of the cable to the display board.
4.3.2 Communication connection
The RJ-45 port (RS485-3) for connecting indoor and condensing unit must be provisioned by the
customer. The length of the communication line should be prepared according the actual installation
distance at site. The position and description of insert plug are shown in Figure 4-6 and Table 4-2.
There are RS485-1 and RS485-2 ports on the unit for communication with third party monitoring
systems to enable remote monitoring of the unit. The RS485-1 (with 12 V power supply) could
connect with SIC card monitoring kit. The aforementioned connections are shown in Figure 4-8 and
Table 4-2. Please refer to RDU-SIC G2 Card Field Installation for details.
Figure 4-8 Display, power and monitoring cable connections in the indoor unit
Terminal block for
Input Power
Inner cable hole
Terminal block for
Outdoor Fan Power
Grounding
screw2
Grounding screw1
Compressor
communication
line
Cable
clamp 1
Cable
clamp 2
Cable
clamp 3
External cable hole
Cable
clamp 4
Terminal block for
LLSV
Outdoor fan
Terminal block
LLSV Block
Input Power
Terminal block
Display plug
Outdoor Communication
RS485-3
Network port
RS485-2
Network port
RS485-1
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Vertiv I VRC Split System I User Manual
Table 4-2 Communication port description
Port type
RS485-1
RS485-2
Compressor Communication RS485-3
1
12 V
NC
NC
2
3
NC
NC
NC
4
GND
GND
GND
5
6
NC
NC
NC
7
D+
D+
D+
8
D-
D-
D-
4.4 Installation Inspection
After the electrical installation is completed, it should be confirmed according to Table 4-3 below.
Table 4-3 Installation inspection
Items
Results
The power supply voltage meets the rated voltage on the unit nameplate
The system electric loop has no open circuit or short circuit
There must be no open-circuit or short-circuit in the electrical connections.
The power cable and grounding cable to the air-break switch are connected.
The ratings of the miniature circuit breakers and fuses are correct (Refer to the unit
nameplates to select suitable miniature circuit breakers or fuses)
The control cables are connected firmly.
All the cables connections are fastened appropriately, with no loose screws at the
connections
After confirming the above points, you can start the commissioning of the unit.
NOTES:
• Do not power on the unit until any Vertiv authorized technical personnel has checked and confirmed
the unit.
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Vertiv I VRC Split System I User Manual
5 Controller Operation Instructions
This chapter gives a detailed description on feature, appearance, LCD screen, control buttons, control
interface and menu structure of the air conditioner.
5.1 LCD Screen
The LCD screen displays English menus with white backlight. Figure 5-1 depicts the image of the
controller display.
Figure 5-1 Controller Display
5.2 Control Buttons
The micro-processing controller provides five control buttons, as shown in below Figure 5-2.
Figure 5-2 Control Buttons
ESC Button
Run Indicator
Alarm Indicator
Down Arrow
Button
ENT Button
Up Arrow
Button
ON/ OFF Button
LCD Screen
RUN
ALARM
ENT
ESC
ENT
ESC
ESC Button
Down Arrow
Button
ENT Button
Up Arrow
Button
ON/ OFF Button
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Vertiv I VRC Split System I User Manual
The functions of the control buttons are described in Table 5-1.
Table 5-1 Functional description of the controller buttons
Key
Function Description
ON/OFF
Switch on/off the controller by pressing and holding for 3s.
ENT
(Enter
button)
Enter the selected menu screen. Validate the parameter setting value.
ESC
Exit the current menu and return to the Normal screen or previous menu screen. Abort
parameter change; make the audible alarm scilent.
Up button
Move the cursor up or increase the parameter value. For a toggle selection: scroll through the
options. For a multi-screen menu: scroll up the screen.
Down
button
Move the cursor down or decrease the parameter value. For a toggle selection: scroll through
the options. For a multi-screen menu: scroll down the screen.
5.3 ON Screen
After the unit is powered on, the LCD screen will display the ON screen, and you can choose English
or Chinese on the display board.
5.4 Normal Screen
After the unit is powered on, the Normal screen will be displayed after 10 seconds, as shown in
Figure 5-3. The temperature units of VRC200, VRC201 and VRC202 are Fahrenheit, Fahrenheit and
Celsius, respectively. The VRC200 is used as an example.
Figure 5-3 Normal Screen
It displays the settings and actual values in the upper half of the display related to the settings and
actual supply air temperature in the first column, humidity in the second column and return air
temperature in the third column.
In the lower part of the screen, it displays the unit output status (fan, cooling) and unit operation
status (off, running, standby locked).
The icons on the main screen indicate the unit output status, unit property unit operating status. The
icons and their definitions are displayed in the Table 5-2.
SUP 68 °F
ACT 70 °F
SUP -- %
-- %
RET 90 °F
86 °F
75 %
63 %
S / ON
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Vertiv I VRC Split System I User Manual
Table 5-2 Controller display icon details
Icons
Definitions
Fan rotating speed. Displaying the percentage of actual fan rotating speed
Compressor capacity. Displaying the percentage of actual compressor capacity
Unit property/operation status. S: single; ON: running; R-OFF: remote shutdown; L-OFF:
local shutdown; M-OFF: monitoring shutdown; MANU: manual mode; BKUP: backup; Lock:
lock
5.5 Unit Working Icons
The icons and their definitions are listed in Table 5-3.
Table 5-3 Description of Icons
Icon
Description
SUP
Supply air temperature setpoint
ACT
Actual air temperature
RET
Specified return temperature
Cooling, the output of compressor
Rotating speed rate of the fan, ranging from 30% to 100%
Unit attribute/running state. S: standalone; RUN: running; OFF: shutdown
5.6 Menu
Alarm Menu
Select Alarm Menu on Main Menu screen to enter the screen shown in Figure 5-4. Press the Up or
Down button to scroll up or down the menu items.
Figure 5-4 Alarm Menu
Alarm Status
The alarm status menu is used to monitor the current alarm status of the air conditioner unit. It
prompts no alarm or specific alarm information. The specific alarm information includes XX/YY, alarm
type alarm generation time, as shown in Figure 5-5. XX indicates the alarm SN YY indicates the total
number of reported alarms.
<ALM Status>
<HP Abnormal>
<ALM Set>
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Vertiv I VRC Split System I User Manual
Figure 5-5 Current alarm menu
NOTES:
• The latest alarm SN is the biggest number. Press the Up or Down button to scroll through the alarm
status records if more than one alarm is activated.
• The current alarms are automatically cleared upon system power failure.
Alarm Set
On the Alarm Set menu, select to enter the alarm setup screen. Use the Up or Down key to query
menu items. The alarm setup menu includes Alarm Setpoint, System Alarms Alarm Handle, as shown
in Figure 5-6, Figure 5-7 and Figure 5-8. Parameter settings can be saved permanently.
Figure 5-6 Items of the alarm value setup menu
Figure 5-7 Items of the system alarm attribute setup menu
Figure 5-8 Items of alarm handle attribute menu
Temp Set
Select Main Menu -> Temp set enter the screen as shown in Figure 5-9 the Temperature Setting
values will be permanently saved.
ALM Status 1/1
Hi SupTemp
2018/01/01 12:00
Hi Sup Temp 80.6 °F
Lo Sup Temp 46.4 °F
Hi Ret Temp 86 °F
Hi Sup Temp ON
Lo Sup Temp ON
Hi Ret Temp ON
Water HL ON
Filt Maint Yes
Clr HP Abnor No
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Vertiv I VRC Split System I User Manual
Figure 5-9 Temp & Hum Set menu
NOTES:
• The specified temperature value is the target temperature for ensuring normal system running. When
the control mode is set to return or supply air, the specified temperature is the temperature of the
return air or supply air.
• The default control mode of the unit is return air control mode, and the setpoint is 25 °C (77 °F).
• If the indoor unit is used in the open rack, it is recommended to use return air control mode.
• If the indoor unit is used in the closed rack, it is recommended to use supply air control mode.
System Status
Select Main Menu -> System State to enter the System State menu, as shown in Figure 5-10.
Figure 5-10 System Status
Run Time
You can query the operation time of the device on this menu, as shown in Figure 5-11.
Figure 5-11 Run time menu
Help Menu
The menu includes Date &Time information. You can view the relevant information, as shown in
Figure 5-12.
<Run Time>
Fan 23 h
Comp 0 h
Cool Prop 9 °F
Ctrl Mode Sup Air
Sup Stpt 60.8 °F
Ret Stpt 82.4 °F
Temp DB 0.9 °F
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Vertiv I VRC Split System I User Manual
Figure 5-12 Date & Time menu
<Date&Time>
Time(M) 20
Time(S) 30
Date (Y) 2018
Date (M) 1
Date (D) 1
Time (H) 12
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Vertiv I VRC Split System I User Manual
PART III
SYSTEM OPERATION &
GENERAL MAINTENANCE
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Vertiv I VRC Split System I User Manual
6 Startup Commissioning
This chapter describes the startup commissioning, including specific operations.
6.1 Preparations Before Commissioning
6.1.1 Mechanical Part
• Ensure all valves are open in the refrigerant lines as per their initial valve opening set-points.
• Ensure that the amount of refrigerant charged inside the system is correct.
• Connect the condensate water drain system piping and inspect for any leakages in the
connections.
• Ensure that the unit has a heat load of at least 0.9 KW. If not, use other heating devices that
compensate for the heat load to ensure necessary amount of heat load for commissioning.
6.1.2 Electronic part
• Ensure that the input voltage of the main power supply is within ± 10% of the rated voltage and
that the power disconnector is closed.
• Ensure that all electrical or control connections are correct and tighten all electrical and control
connectors.
• Ensure that the power cable and low-voltage control cable are separately arranged.
6.2 Start-up Inspection Checklist
Before powering up the unit, ensure the below mechanical and electrical inspections are properly
checked as per the Table 6-1 below.
Table 6-1 Start-up inspection checklist
Inspection
Items
Remarks
Mechanical
inspection
Check if the indoor unit and condensing unit have been connected as an entire
system.
Check if all valves in system have been opened fully.
Check whether refrigerant and oil were added as instructed.
Check if drainage pipe has been connected properly and tightly.
Check if there is heat load for AC operating, if not, please increase the heat
load by some devices, such as heaters.
Electrical
inspection
Check, measure confirm if the AC mains voltage and frequency are normal
verify if the AC mains correction is correct without any short circuit
Check if all electrical or control connections are correct and tight.
6.3 System Commissioning
The indoor and condensing units have been charged with the rated amount of refrigerant in factory,
when the indoor unit and condensing unit have been connected as an entire system at sites, the
steps mentioned below should be followed to ensure the normal operation of the unit:
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Vertiv I VRC Split System I User Manual
6.3.1 Start up the unit
• Close all the circuit breakers of the unit only after a careful inspection of the entire unit
installation is done.
• Press and hold the ‘ON’ button on the display board for 3 seconds to power up the unit.
• Pay attention to the controller display to ensure that there are no alarms or warnings displayed.
• Ensure the operating status of compressor, evaporator fan and condenser fan, is smooth and
that there are no vibrations or any kind of noise from any of these components.
• Observe and monitor whether the system parameters are within the normal range, such as
return air temperature and supply air temperature etc. as per the set operational functionality.
• If any abnormal operation is noticed, stop the unit by pressing the ‘ON/OFF’ button on the
display board for 3 seconds disconnect all circuit breakers.
6.3.2 Check refrigerant charge capacity of low ambient condensing
The low ambient condensing unit has been charged with refrigerant before delivery. Check whether
the refrigerant charge capacity is proper after powering on by using the following method.
There are two sight glasses on the receiver, as shown in Figure 1-6. When the high pressure is not
lower than 20.3 bar, the liquid level of the refrigerant will reach the higher sight glass. When the
ambient temperature is low and the high pressure cannot meet the requirement, the liquid level of
the refrigerant will reach the lower sight glass.
6.4 Commissioning Complete Inspection
Check according to Table 6-2 after commissioning.
Table 6-2 Checklist after commissioning
Inspection Items
Inspection Results
Check that all outputs are functional.
Check that the temperature settings are correct and are controlled within
range
Are there any abnormal alarms or warnings displayed on the controller?
Make sure all the other functions are set correctly.
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Vertiv I VRC Split System I User Manual
7 System Operation and Maintenance
Periodic system maintenance is crucial to ensure product reliability and validity. This chapter
expounds the system maintenance of the air conditioner, including safety instructions, electric
inspection, indoor unit maintenance, outdoor unit maintenance, electrical connection maintenance,
cooling system maintenance, system diagnosis testing and maintenance inspection checklist.
7.1 Safety Instructions
Following are the safety instructions that need to be observed during the maintenance process:
WARNING! During the operation of the precision air conditioner, very high voltage may be
present in the equipment. Adhere to all of the notes and warnings marked on the equipment
or contained in this manual, which may otherwise lead to an injury or fatality.
WARNING! Only qualified maintenance personnel can operate and handle the equipment. All
maintenance and operation must follow the local laws, especially the regulations about the
electric power, refrigeration, and production.
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.
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.
CAUTION: Comply with the manufacturer’s instructions before and during maintenance. Failure
to observe this will result in the warranty becoming void. Adherence to the safety instructions
is mandatory to ensure personnel safety and prevent any environmental impact apart from
equipment damage. Unsuitable components will impede equipment performance and may
cause equipment shutdown. Therefore, Vertiv recommends the use of Vertiv OEM or
Vertiv-approved components.
7.2 Electrical Inspection
Inspect the control board and temperature sensor every 6 months for loose electrical connections
and circuit corrosion.
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Vertiv I VRC Split System I User Manual
Following are the steps to inspect the boards:
Firmly tighten all the electrical contacts.
Clean the electrical and control components with a brush or by using compressed dry air.
7.3 Indoor Unit Maintenance
7.3.1 Evaporator Fan
Since the fan operates 24/7 throughout the year, any unusual airflow obstruction must be cleared in
time to avoid damage to the cooling system and other system components caused by reduced air
volume. Periodic inspection covers the state of the fan impellers, fastening of fan components,
abnormal noise of the fan cable connection of the fan.
Do not operate and maintain the fan in a running condition to avoid any injury to the operator
or damage the fan blades.
7.3.2 Return Air Filter
The return air filter is mounted on the back side of the indoor unit, as shown in Figure 7-1. To ensure
the normal operation of the filter, the filter service alarm logic is provided by the controller. The
default fan running time is 2000 hours (settable according to the local running environment), when
the time is exceeded, the filter service alarm is triggered. The filter needs to be replaced based on its
clogged condition. The filter must be checked for its condition once a month and be replaced as
required.
Figure 7-1 Return air filter
7.3.3 Drainage Pump
Inspect the drain pipe for normal operation. Ensure no pipe buckling is present. If the pipe buckling
happens, the new pipe should be used. Ensure that reservoir, pump filter and inlet tube are free of
sludge and debris. If not, please clean it.
Return air filter
Pump brackets
Pump
Pump reservoir
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Vertiv I VRC Split System I User Manual
Figure7-2 Condensate pump kit
Figure 7-3 Pump filter
7.4 Condensing Unit Maintenance
7.4.1 Condenser
• Sometimes the airflow through the condensing unit is restricted. In such a scenario, use
compressed air or a fin cleaner (alkalescency) to clean the dust and debris that inhibits airflow
off the condenser. The compressed air should be blown in the reverse airflow direction.
• Check for bent or damaged fins and repair them, if necessary.
• Check the connection refrigerant pipes for signs of oil leakage and rectify it if any leakage is
found.
7.4.2 Compressor
CAUTION: Avoid touching or having skin contact with the residual gas and oils in the
compressor. Wear long rubber gloves to handle contaminated parts. The air conditioning
system contains refrigerant. The release of refrigerant is harmful to the environment.
The compressor faults can be categorized into two types:
• Motor faults (such as winding burnout, insulation failure, short circuit between coils, etc.)
• Mechanical faults (such as compressor failure, relief valve faults, etc.)
If the operating pressure is not established, it means that the compressor has failed. Confirm if the
suction pressure and discharge pressure are balanced and verify that the motor does not rotate
reversely. The controller is streamlined with capabilities like powerful alarm and protection functions
to ensure safe operation of the compressor. Periodic checks of high pressure and low pressure along
with alarm protection for such pressure-related issues should be carried out by maintenance
personnel on a regular basis to rule out discrepancies.
7.4.3 Condenser Fan
The monthly inspection items of the fan include: motor operation status, impeller status, fan fixation
and clearance between fan and impeller. Inspect the motor bearing and impeller monthly and
replace it if any damaged impeller is found. Check that the impeller is tightly mounted on the rotor of
the motor and does not rub against its neighboring metal components during rotation. Since the fan
kit operates 24 hours every day continuously, any unusual airflow obstruction must be cleared in
time to avoid the damage to the cooling system and other system components caused by reduced air
volume.
Pump filter
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Vertiv I VRC Split System I User Manual
7.4.4 Receiver and Heating Belt
Periodically check the liquid level of the refrigerant in fluid reservoir to ensure that no refrigerant
leakage happens. For detailed operation, refer to 6.3 Check refrigerant charge capacity of low
ambient condensing unit.
Periodically check whether the heating belt works normally. See following for details:
When the system is powered on and standby, and the high pressure is lower than 1.2 MPa, the
heating belt preheats the receiver. If the heating does not happen, check whether the heating belt or
the pressure switch works normally. After confirming the fault part(s), replace it or them.
NOTES:
• Wear long rubber gloves to handle contaminated parts.
• The air conditioning system contains refrigerant and release of refrigerant to the atmosphere is harmful
due to environment.
7.5 Electrical Connection Maintenance
7.5.1 Electrical Maintenance
Check the appearance to the electrical connections and take actions according to the following
procedures:
Conduct overall electrical insulation test: find out the non-insulated contacts and rectify them
with proper insulation covering.
Disconnect all the fuses or MCBs of the control part during the test as the high supply voltage
may damage the control components.
Clean the electrical panel and control panel boards from dust with a brush or by blowing low
pressure dry compressed air.
Properly fasten all the electric connection terminals.
Check that the sockets and plugs are in good condition. Replace the loose ones with new sockets
and plugs
If the power cables are damaged, the cables must be replaced by professional personnel to
avoid any non-standard installation practices.
7.5.2 Controller Connections Maintenance
Check the appearance to the control part and take actions according to the following procedures:
Check the appearance of the power module and measure the output voltage.
Check whether the surface of the control interface board, control board temperature NTC
electronic expansion valve control board shows any signs of aging or wear & tear.
Clean up dust and dirt from the electrical control components and control board with a brush
using an electronic dust cleaning agent.
Check and fasten the input and output connectors of the control interface boards, including the
control board, interface board temperature NTC electronic expansion valve control board.
Check whether the contact and connection of the fan power cable, signal cable rotating speed
feedback signal cable are firmly fixed.
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Vertiv I VRC Split System I User Manual
Check whether the interconnection terminals between the control interface board and the
temperature or pressure sensor are firmly fixed. If there is any loose, poor contact, or fault,
immediately replace the interconnection terminal.
Replace the faulty electrical components such as the control fuse (or air breaker) and control
board.
Use the temperature measurement meter with high measurement precision to measure and
calibrate the reading of the temperature sensor.
Adjust the set points. Check the motion of each functional component according to the control
logic.
7.6 Cooling System Maintenance
The components of the cooling system must be inspected for finding any abnormalities in the
operation causing abrasions due to continuous operation. As the failure or damage of components is
usually accompanied by corresponding faults, regular checking needs to be carried out to prevent
most of the system faults.
The surface of the evaporator coil should be kept clean and have no rupture.
The major reasons for electronic expansion valve failure are related to electrical failure and/or
mechanical failure. The electrical failure may be attributed to the failure of the power supply of the
electronic expansion valve control panel and coil, loosely connected control board wiring pressure
and temperature sensor failure. The mechanical failure may be the effect of blockage in the
refrigerant flow in an electronic expansion valve. Therefore, when the electronic expansion valve is
faulty, pay close attention to the control panel power supply, control board wiring, pressure and
temperature sensor wiring or the valve itself.
Refrigerant pipes must be properly fixed and not allowed to vibrate against the wall, floor or the unit
frame. Inspect all refrigerant pipes and fixing bracket every six months for signs of wear.
7.7 Leakage Detection (F-gas)
For countries covered by the F-gas regulation, when the low ambient condensing unit (VRC352) is
used, both the indoor unit (VRC202) and the low ambient condensing unit should be checked for
leaks once a year according to mandatory rules. There are three holes in the indoor unit for
detection, as shown in Figure 7-4 and Figure 7-5.
The following section is a step-by- step illustration of the process of leak detection.
1. Remove the 8 screws, grille, water leakage detection board, and 2 rubber bushing in Figure 7-4
one by one.
2. Remove the 3 screws and cover plate in Figure 7-5.
3. Insert the sniffer into the VRC202 unit to check whether the refrigerant leaks in the areas in
Figure 7-6. Check detection area (front) and detection area (rear) from the front and rear of the
VRC202 unit, respectively.
4. Restore the VRC202 unit to its original state after the check is completed.
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Vertiv I VRC Split System I User Manual
Figure 7-4 The detection holes in VRC202 (front)
Figure 7-5 The detection holes in VRC202 (rear)
Figure 7-6 The detection area in VRC202 (rear)
7.8 System Diagnosis Testing
The microprocessor controller supports the manual mode and provides diagnostic functions such as
manually enabling and disabling parts. Such functions can be used to detect states of the system
functional parts.
Detection hole 2*pcs
Rubber bushing 2*pcs
Screw M3×8 * 8pcs
Water leakage detection board
Screw M4×10 * 3pcs
Cover plate 1*pcs
Detection hole 1*pcs
Detection area (rear)
Detection area (front)
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Vertiv I VRC Split System I User Manual
7.9 Maintenance Inspection Checklist
The maintenance checklist of the unit is provided in the Table 7-1 below.
Table 7-1 Maintenance Checklist
VRC2/3
Date:
Prepared by:
Model:
Serial Number:
Type
Maintenance
Components:
Item
Result
Monthly:
Return air filter
Check for restricted air flow
Check the filter cleanliness
Clean the filter
Evaporator fan
and condenser
fan
Check if fan blades are distorted.
Check whether the fan generates any noise during operation
Check whether the fan has stoped rotating.
Check and fasten the circuit connector.
The fan base should be firm
Drainage pump
Check whether filter is clogged or damaged
Clean the filter
Check whether the pipes are loose.
Check whether there are impurities and debris in the water tray.
Check the drain pump connection line for clogging.
Check whether the cable of the drain pump is loose.
Semi-ann
ually:
Compressor
Signs of oil leakage
Check if there is abnormal vibration and noise of compressor
Condenser
Check the fins cleanness
Low ambient kit
Check whether there is leakage
Check whether heating belt works normally
Check whether pressure switch works normally
Check whether the liquid line solenoid valve works normally
Cooling system
Suction pressure
Discharge pressure
Superheat
Connection pipe no leakage
Charging capacity of refrigerant
Electrical
control part
Check whether the main circuit breaker and the circuit breaker
cable of the power module are tightly connected.
Check and fasten the circuit connector.
Check whether the cables and meter reading of each sensor are
within prescribed range.
EEV electric
board
Check whether the wiring and coil of the electronic expansion
valve control board are loose
Check electrical connections
Check the surface for signs of corrosion
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Vertiv I VRC Split System I User Manual
8 Troubleshooting
This chapter introduces the failure diagnosis and troubleshooting and can be used together with the
alarm section in Chapter 5.
CAUTION: Certain circuits carry lethal voltages. Only professional technicians are allowed to
maintain the unit. Extra precautions should be taken when troubleshooting a live unit. Be
particularly careful troubleshooting with the unit’s power switched on.
CAUTION: If jumpers are used for troubleshooting, make sure to remove the jumpers after
troubleshooting. If the connected jumpers are not removed, they may bypass certain control
functions causing damage to the equipment.
8.1 Troubleshooting
Trouble Shooting for the entire unit is mentioned in the below Table 8-1.
Table 8-1 Troubleshooting
Fault Occurrence
Possible Cause
Check or Remedy
High
temperature
alarm
Unreasonably high temperature
alarm setpoint
Check and reset high temperature alarm
setpoint
Overload condition
Check whether the max. actual heating load is
over the rated value
Condenser fan does not run
normally or is faulty
Check if the fan power cable is disconnected
Compressor does not run
normally
Check if the compressor power cable is
disconnected
Low temperature
alarm
Unreasonably low temperature
alarm setpoint
Check and reset low temperature alarm
setpoint
Evaporator fan does not run
normally or is faulty
Check if the fan power cable is disconnected
Compressor does not run
normally
Check to see if the compressor power cable is
disconnected
High pressure
alarm
Condenser fan does not run
normally or is faulty
Check if the fan power cable is disconnected
High pressure sensor is abnormal
Check if the high-pressure sensor is normal
Insufficient condensing airflow
Remove debris from the coil and air inlet
Check if the fan speed controller operates
normally
Low pressure
alarm
Refrigerant leakage
Check for leaking points and re-charge
refrigerant
Condenser fan runs at full speed
when ambient temperature is too
low
Check if wire connection of outdoor fan is
reversed
EEV adjusts abnormally or is
closed
Check if the EEV coil or EEV cable is loose
Evaporator fan does not run
normally or is faulty
Check if the cable of fan is disconnected
Insufficient airflow across
evaporator coil
Remove debris from the coil and air inlet
Severe
condensation or
water leakage
The air humidity is too high
Use other dehumidifier to control the air
humidity
EEV adjusts abnormally
Check if the EEV coil or EEV cable is loose
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Vertiv I VRC Split System I User Manual
Fault Occurrence
Possible Cause
Check or Remedy
Compressor runs at high speed
Check if the compressor is out of control
The drainage pan or pipe is loose
or blocked
Check if drainage pipe is loose or clean the
debris in the drainage pan or pipe
Compressor
vibration or
abnormal noise
The mounting position is not even
Check mounting position state
The fixing parts are loose
Check the fixing nuts of compressor and fasten
again
Compressor is faulty
Call the customer service hotline of Vertiv
8.2 Fan Troubleshooting
The fan troubleshooting is listed in Table 8-2
Table 8-2 Fan fault diagnosis and handling
Symptom
Probable Causes
Check Items and Handling Methods
EC fan can’t be
started
The circuit breaker is
open
Check if the circuit breaker is closed.
Fan power module
failure
Check the alarm indicator of the fan power module to if the control
board fails
The cable is faulty
Check whether the cable from the main control board, fan fault
detection board, or power module to the control terminal bar is
firmly fixed.
Check whether the cable from the control terminal bar to the plug
wire terminal of the fan is firmly fixed.
8.3 Fault Diagnosis and Handling of Electronic Expansion Valve
As a key component for refrigerant system and cooling capacity adjustment, the working of the
electronic expansion valve is important. Table 8-3 describes the fault diagnosis and handling
methods.
Table 8-3 Fault diagnosis and handling methods
Symptom
Probable Causes
Check Items and Handling Methods
The
adjustment of
the electronic
expansion
valve is faulty.
The temperature
sensor or pressure
sensor is faulty.
Check whether the sensor cable is firmly fixed.
Check whether the sensor cable position on the control board is
correct.
The control board is
powered off.
Check whether the output fuse of the transformer has
tripped/broken.
Check whether the input power of the control board of the
electronic expansion valve is of 24 V power supply.
The cable connection
of the control board
is faulty.
Check whether the valve cable connection on the control board of
the electronic expansion valve is faulty.
Check whether the communication cable between the electronic
expansion valve control board and the main control board is
properly connected.
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Vertiv I VRC Split System I User Manual
8.4 Fault Diagnosis and Handling of the Air Conditioning System
When the air conditioning system component is faulty, identify the causes and tackle the problem to
ensure normal operation of the unit. Table 8-4 describes the major faults and troubleshooting
methods.
Table 8-4 Refrigeration system faults and troubleshooting methods
Symptom
Probable Causes
Check Items and Handling Methods
The surface of the
evaporator has
serious
condensation.
Check whether the surface of
the evaporator is filth
blocked.
Check the surface of the evaporator. blockage may
result in non-smooth discharge of the condensate
water.
Air volume
decrease
The air filter is blocked.
Periodically check the filter and replace it in a timely
manner to avoid air volume attenuation due to filth
blockage.
The fan is faulty.
Check whether the fan is faulty. Table 8-1 describes the
diagnosis and handling methods.
Blockage of the evaporator
Check the surface of the micro-channel evaporator and
periodically handle the blockage problem.
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Vertiv I VRC Split System I User Manual
Appendix I: System Diagram (Standard Unit)
Condenser
Outdoor Unit
Discharge Temperature
Switch
Service
Valve
Service
Valve
High Pressure
Switch
Liquid Quick
Connector
Compressor
Gas Quick
Connector
Electronic Expansion
Valve
Evaporator
Distributor
Suction Temperature
Sensor
Gas Line
Liquid Line
Indoor Unit
Low Pressure
Transducer
High Pressure
Transducer
Liquid Quick
Connector
Interconnecting Piping
Gas Quick
Connector
Service
Valve
Service
Valve
Trap
Gas Line
Liquid Line
7.5 m (24.6 ft)
For rising over 7.5
m (24.6 ft), trap
every 7.5 m (24.6
ft) or evenly
divided.
Service
Valve
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Vertiv I VRC Split System I User Manual
Appendix II: System Diagram (Low Ambient Unit)
Condenser
Outdoor Unit
Check Valve
Head
Pressure
Valve
Discharge
Temperature
Switch
Service
Valve
Relief
Valve
Pressure
Switch
Solenoid
Valve
Service
Valve
High Pressure
Switch
Receiver
Service
Valve
Liquid Quick
Connector
Electric
Heating Belt
Compressor
Gas Quick
Connector
Electronic Expansion
Valve
Evaporator
Distributor
Suction Temperature
Sensor
Gas Line
Liquid Line
Indoor Unit
Low Pressure
Transducer
High Pressure
Transducer
Liquid Quick Connector
Interconnecting Piping
Gas Quick Connector
Service
Valve
Service
Valve
Trap
Gas Line
Liquid Line
7.5 m (24.6 ft)
For rising over 7.5
m (24.6 ft), trap
every 7.5 m (24.6
ft) or evenly
divided.
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Vertiv I VRC Split System I User Manual
Appendix III: Wiring Diagram (VRC200/VRC201 Unit)
AC/DC Power Module
Power Protector
ACM02A1
Supply Air TEMP. Sensor
Return Air TEMP. Sensor
High Pressure Sensor
HPS
Water Level Sensor
WLS
PACC
Controller
ACM05U1
EEV Controller
Low Pressure Sensor
LPS
Indoor Fan
Suction TEMP. Sensor
EMI Filter
ACM02X2
Terminal Block
Compressor
Communication
Compressor
Communication
Display
MBV Outdoor Fan
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
LINE VOLTAGE
1 PHASE SUPPLY
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
RDU-C
RDU-SIC
RDU-C
EEV
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Vertiv I VRC Split System I User Manual
Appendix IV:Wiring Diagram (VRC300/VRC301 Unit)
Inductor
L1
Compressor
Inverter
Compressor
High Pressure
Switch
TEMP. Switch
Capacitor
Outdoor Fan
EMI Filter
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
Compressor
Communication
Compressor
Communication
Outdoor Fan
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
LINE VOLTAGE
1 PHASE SUPPLY
CON1
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Vertiv I VRC Split System I User Manual
Appendix V:Wiring Diagram (VRC350/VRC351 Unit)
Inductor
L1
Compressor
Inverter
Compressor
High Pressure
Switch
TEMP. Switch
Capacitor
Outdoor Fan
LLSV
EMI Filter
RHTR
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
Compressor
Communication
Low Pressure
Switch
Compressor
Communication
LLSV Outdoor Fan
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
LINE VOLTAGE
1 PHASE SUPPLY
CON1
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Vertiv I VRC Split System I User Manual
Appendix VI:Wiring Diagram (VRC202 Unit)
AC/DC Power Module
Power Protector
ACM02A1
Supply Air TEMP. Sensor
Return Air TEMP. Sensor
High Pressure Sensor
HPS
Water Level Sensor
WLS
PACC
Controller
ACM05U1
EEV Controller
Low Pressure Sensor
LPS
Indoor Fan
Suction TEMP. Sensor
EMI Filter
ACM02X2
Terminal Block
Compressor
Communication
Compressor
Communication
Display
LLSV Outdoor Fan
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
LINE VOLTAGE
1 PHASE SUPPLY
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
RDU-C
RDU-SIC
RDU-C
EEV
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Vertiv I VRC Split System I User Manual
Appendix VII:Wiring Diagram (VRC302 Unit)
Inductor
L2
Inductor
L1
Compressor
Inverter
Compressor
High Pressure
Switch
TEMP. Switch
Capacitor
Outdoor Fan
EMI Filter
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
Compressor
Communication
Compressor
Communication
Outdoor Fan
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
LINE VOLTAGE
1 PHASE SUPPLY
CON1
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Vertiv I VRC Split System I User Manual
Appendix VIII:Wiring Diagram (VRC352 Unit)
Inductor
L2
Inductor
L1
Compressor
Inverter
Compressor
High Pressure
Switch
TEMP. Switch
Capacitor
Outdoor Fan
LLSV
EMI Filter
RHTR
EARTH GROUND
CONNECTION
CONNECTION PANEL
EARTH GROUND
CONNECTION
Compressor
Communication
Low Pressure
Switch
Compressor
Communication
LLSV Outdoor Fan
SEE UNIT NAMEPLATE
FOR MAIN SUPPLY
WIRE SIZING
LINE VOLTAGE
1 PHASE SUPPLY
CON1
Suppliers Declaration of Conformity
Unique Identifier: VRC200, VRC201, VRC300, VRC301, VRC350, VRC351
Party Issuing Supplier’s Declaration of Conformity
Vertiv Group Corp.
1050 Dearborn Drive
Columbus, OH 43085
US
Customer service hotline: 614-888-0246
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 (2) this device must accept any
interference received, including interference that may cause undesired operation.
Note:
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 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.com I 1-4/F, 6-10F, Block B2, Nanshan I Park, No.1001 Xueyuan Road, Nanshan District, 518055 Shenzhen,
Guangdong, CHINA
© 2019 Vertiv Group Corp. All rights reserved. Vertiv and the Vertiv logo are trademarks or registered trademarks of
Vertiv Group Corp. All other names and logos referred to are trade names, trademarks or registered trademarks of
their respective owners. While every precaution has been taken to ensure accuracy and completeness here, Vertiv
Group Corp. assumes no responsibility, and disclaims all liability, for damages resulting from use of this information or
for any errors or omissions. Specifications are subject to change without notice.
V1.2 / REV 18-03-2020 / Code-31014128