Huawei NetCol5000-A020 User manual

Part Number: 31010QPN
NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
V100R002
User Manual
Issue
01
Date
2014-06-30
HUAWEI TECHNOLOGIES CO., LTD.

Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
i
Copyright © Huawei Technologies Co., Ltd. 2014. All rights reserved.
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
Trademarks and Permissions
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
Notice
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees or
representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Huawei Technologies Co., Ltd.
Address:
Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website:
http://www.huawei.com
Email:
[email protected]

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
About This Document
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
ii
About This Document
Purpose
This document describes the NetCol5000-A020, an air cooled in-row precision air conditioner,
in terms of its precautions, product description, installation guide, commissioning, operation
and maintenance (O&M). It helps users rapidly learn the operation and maintenance (O&M)
of the NetCol5000-A020.
Intended Audience
This document is intended for:
Sales personnel
Technical support personnel
System engineers
Hardware installation personnel
Commissioning engineers
Data configuration engineers
Maintenance personnel
Symbol Conventions
The symbols that may be found in this document are defined in the following table.
Symbol
After the system is restarted, use the kmtune
command to check the kernel parameters to ensure
that the setting is valid.
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury.

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
About This Document
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iii
Symbol
After the system is restarted, use the kmtune
command to check the kernel parameters to ensure
that the setting is valid.
Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.
NOTICE is used to address practices not related to personal
injury.
Calls attention to important information, best practices and
tips.
NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.
Change History
Changes between document issues are cumulative. The latest document issue contains all the
changes made in earlier issues.
Issue 01 (2014-06-30)
This issue is the first official release.

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Contents
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
iv
Contents
About This Document.................................................................................................................... ii
1 Precautions .....................................................................................................................................1
1.1 Safety Precautions ........................................................................................................................................................1
1.2 Electrical Safety............................................................................................................................................................2
1.3 Mechanical Safety ........................................................................................................................................................4
1.4 Running Safety .............................................................................................................................................................5
1.5 Others............................................................................................................................................................................5
2 Product Description......................................................................................................................7
2.1 Model Description........................................................................................................................................................7
2.2 Composition of an Indoor Unit.....................................................................................................................................7
2.3 Monitoring function......................................................................................................................................................9
2.3.1 Controller...................................................................................................................................................................9
2.3.2 Monitoring System ..................................................................................................................................................10
2.4 Application Environment............................................................................................................................................11
2.5 Technical Specifications .............................................................................................................................................13
3 Installation Guide.......................................................................................................................15
3.1 Installation Preparations .............................................................................................................................................15
3.1.1 Preparing Tools........................................................................................................................................................15
3.1.2 Material Preparations...............................................................................................................................................17
3.1.3 Installation Precautions............................................................................................................................................24
3.1.4 Installation Layout...................................................................................................................................................26
3.2 Transportation and Unpacking....................................................................................................................................28
3.3 Installation Flowchart.................................................................................................................................................30
3.4 Mechanical Installation...............................................................................................................................................31
3.5 Install the outdoor unit................................................................................................................................................39
3.6 Exhausting Nitrogen...................................................................................................................................................39
3.7 Connecting Pipelines ..................................................................................................................................................40
3.7.1 Routing Refrigerant Pipes........................................................................................................................................41
3.7.2 Connecting Water Pipes...........................................................................................................................................43
3.7.3 Leak Checking.........................................................................................................................................................44
3.8 Electrical Connection..................................................................................................................................................45
3.8.1 Cable Installation.....................................................................................................................................................45

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Contents
Issue 01 (2014-06-30)
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Copyright © Huawei Technologies Co., Ltd.
v
3.8.2 Connecting Power Cables........................................................................................................................................46
3.8.3 Installing the Voltage Jumper...................................................................................................................................47
3.8.4 Connecting the Signal Cables..................................................................................................................................48
3.8.4.1 Preparations Before Connection ...........................................................................................................................48
3.8.4.2 Connecting Outdoor Unit On/Off Signal Cable....................................................................................................51
3.8.4.3 Connecting a Water Sensor...................................................................................................................................52
3.8.5 Teamwork Networking and Monitoring...................................................................................................................52
3.8.6 Installing T/H Sensors .............................................................................................................................................55
3.9 Connections Verification.............................................................................................................................................57
4 Power-On Commissioning........................................................................................................60
4.1 Tools ...........................................................................................................................................................................60
4.2 Partially Charging in Refrigerant................................................................................................................................60
4.2.1 Calculation Requirements of Chilled Oil and Refrigerant to Be Charged ...............................................................60
4.2.2 Charging Refrigerant Oil .........................................................................................................................................61
4.2.3 Vacuumizing ............................................................................................................................................................63
4.2.4 Partially Charging in Refrigerant.............................................................................................................................64
4.3 Power-on Preparations................................................................................................................................................65
4.4 Powering on the Equipment........................................................................................................................................67
4.5 Commissioning Procedure..........................................................................................................................................68
4.6 Powering off the Equipment.......................................................................................................................................71
5 System Operation and Maintenance.......................................................................................72
5.1 Safety Precautions ......................................................................................................................................................72
5.2 Indoor Unit Maintenance Items..................................................................................................................................72
5.3 Other Cooling System Components............................................................................................................................76
5.4 Alarm Reference.........................................................................................................................................................78
5.5 Troubleshooting..........................................................................................................................................................90
5.5.1 The NetCol5000-A020 Generates Abnormal Voice.................................................................................................90
5.5.2 A Compressor does not Work...................................................................................................................................91
5.5.3 Compressor Generates Excessive Noises ................................................................................................................92
5.5.4 An Indoor Fan Fails to Start.....................................................................................................................................93
5.5.5 Humidification Fails ................................................................................................................................................95
5.5.6 The Heating Function Is Unavailable ......................................................................................................................96
5.5.7 The Water Overflows the NetCol5000-A020...........................................................................................................98
5.5.8 The T/H Sensor Cannot Detect the Humidity and Temperature ..............................................................................98
5.5.9 The LCD does not Light ..........................................................................................................................................99
5.6 Parts Replacement ....................................................................................................................................................100
5.6.1 Replacing Air Filters..............................................................................................................................................100
5.6.2 Replacing an Indoor Fan........................................................................................................................................102
5.6.3 Replacing the Compressor.....................................................................................................................................103
5.6.4 Replacing the Humidifier Cylinder........................................................................................................................107
5.6.5 Electric Heater .......................................................................................................................................................109

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
Contents
Issue 01 (2014-06-30)
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Copyright © Huawei Technologies Co., Ltd.
vi
5.6.6 Replacing the Solenoid Coil .................................................................................................................................. 112
5.6.6.1 Replacing the Solenoid Coil on the Liquid Solenoid Valve................................................................................ 113
5.6.6.2 Replacing the Solenoid Coil on the Hot Gas Bypass Valve................................................................................114
5.6.7 Replacing Components in the Electric Control Box.............................................................................................. 114
5.6.8 Replacing the Return Air and Supply Air Temperature Sensor.............................................................................. 116
5.6.9 Replacing an T/H Sensor....................................................................................................................................... 118
5.6.10 Replacing the Power Module...............................................................................................................................119
5.6.11 Replacing the Float ..............................................................................................................................................121
5.6.12 Replacing the LCD ..............................................................................................................................................122
A Acronyms and Abbreviations................................................................................................124
B Laying out the Cooling System..............................................................................................125
C Electrical Ports...........................................................................................................................126
D Electrical Schematic Diagram................................................................................................128
E Schematic Diagram of the Main Control Board .................................................................129
F Schematic Diagram of the Voltage Jumper .........................................................................130
G Control Schematic Diagram of the Humidifier Cylinder................................................131

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
1 Precautions
Issue 01 (2014-06-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
1
1 Precautions
1.1 Safety Precautions
Declaration
Huawei does not take responsibilities for the following situations:
Operation under severe environments which are not specified in this document.
Usage under installation and operating environments which are not specified in related
international specifications.
Unauthorized product changes and software code modification.
Operation ignoring safety precautions and operation guidance specified in this document.
Damage caused by abnormal natural environments.
Overview
To ensure safety of humans and the equipment, pay attention to the safety symbols on the
equipment and all the safety instructions in this document.
The "NOTICE", "CAUTION", "WARNING" and "DANGER" marks in this document
do not represent all the safety instructions. They are only supplements to the safety
instructions.
Local Safety Regulations
When operating Huawei equipment, you must follow the local laws and regulations. The
safety instructions in this document are only supplements to the local laws and regulations.
Personal Requirements
Only trained and qualified personnel are allowed to install, operate, and maintain Huawei
equipment, and they must understand basic safety precautions to avoid hazards.
Only trained and qualified personnel are allowed to install, operate, and maintain Huawei
equipment.
Only personnel certified or authorized by Huawei are allowed to replace or change the
equipment or components (including software).

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
1 Precautions
Issue 01 (2014-06-30)
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Copyright © Huawei Technologies Co., Ltd.
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Any fault or error that might cause safety problems must be reported immediately to a
supervisor.
Grounding Requirements
Equipment to be grounded must meet the following requirements:
When installing the device, always make the ground connection first and disconnect it at
the end.
Do not damage the ground conductor.
Do not operate the device in the absence of a properly installed ground conductor.
The device must be connected permanently to the protection ground before an operation.
Before operating the device, check the electrical connection of the device to ensure that
it is securely grounded.
Human Safety
This appliance not accessible to the general public.
Before operating a device, wear electrostatic discharge (ESD) clothes, ESD gloves, and
an ESD wrist strap. Remove conductive objects such as jewelry and watches to avoid
electric shocks or burns.
Ensure that tools are insulated.
In the case of fire, immediately leave the building or the equipment room, and turn on
the fire alarm bell or make an emergency call. Do not enter a building that is on fire.
Equipment Safety
The device must be fixed securely on the floor or to other immovable objects such as
walls and mounting racks before operation.
Do not block the ventilation while the device is operating.
Tighten the thumbscrews by using a tool after initial installation and subsequent access
to the panel.
After the installation, remove packing materials from the equipment area.
1.2 Electrical Safety
High Voltage

NetCol5000-A020 Air Cooled In-row Precision Air
Conditioner
User Manual
1 Precautions
Issue 01 (2014-06-30)
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Copyright © Huawei Technologies Co., Ltd.
3
The high voltage power supply provides power for the device operation. Direct or indirect
contact (through damp objects) with high voltage and alternating current (AC) mains
supply may result in fatal danger.
Non-standard and improper high voltage operations may result in fire and electric shocks.
High Electrical Leakage
Ground the device before powering it on. Otherwise, personal injury or device damage may
be caused by high leakage current.
If a "high electrical leakage" tag is present on the power terminal of the device, you must
ground the device before powering it on.
Bind the bare parts of power cables with insulation tapes and properly place them.
Power Cable
Do not install or remove power cables when the device is on. Transient contact between the
core of the power cable and the conductor may generate electric arcs or sparks, which may
cause fire or hurt human eyes.
Before installing or removing the power cable, turn off the power switch.
Before connecting a power cable, verify that the label on the power cable is correct.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent
or similarly qualified persons in order to avoid a hazard.
The appliance should fit with means for disconnection from the supply mains having a
contact separation in all poles that provide full disconnection under overvoltage category
III conditions, and these means must be incorporated in the fixed wiring in accordance
with the wiring rules.
Fuse
To ensure that the system runs safely, if a fuse is to be replaced, the new fuse must be of the
same type and specifications.