Huawei Netcol8000 A013 In Room Air Cooled Smart Cooling Product User Manual (+ PDF)

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1 NetCol8000 A013 In Room Air Cooled Smart Cooling Product

2 Product Information: NetCol8000-A013 In-room Air Cooled Smart Cooling Product User Manual (800 mm Width)

2.1 Symbol Conventions

2.2 Change History

3 Product Usage Instructions

3.1 Documents / Resources

3.1.1 References

NetCol8000 A013 In Room Air Cooled Smart Cooling Product

Product Information: NetCol8000-A013 In-room Air Cooled Smart
Cooling Product User Manual (800 mm Width)

The NetCol8000-A013 is an in-room air cooled smart cooling
product that is designed to provide efficient cooling for data
centers and server rooms. It is manufactured by Huawei Technologies
Co., Ltd. and is equipped with advanced features such as a
controller for system operation and maintenance. The product is
intended for use by technical support engineers, hardware
installation engineers, commissioning engineers, and maintenance
engineers.

Symbol Conventions

The document uses the following symbols conventions:

Symbol	Description
!	Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
!!	Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
!	Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
#	Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or other unanticipated results. NOTICE is used to address practices not related to personal injury.
*	Supplements the important information in the main text. NOTE is used to address information not related to personal injury, equipment damage, and environment deterioration.

Change History

The latest issue of the user manual (Issue 06, dated November
25, 2022) contains the following changes:

Updated the procedure for replacing the main control board of
the indoor unit
Updated the Alarm Reference

Product Usage Instructions

Before using the NetCol8000-A013 in-room air cooled smart
cooling product, please read the user manual carefully to
understand its installation, commissioning, controller, system
operation and maintenance. Follow the guidelines provided in the
user manual to ensure safe and efficient usage of the product.

If you encounter any issues or have any questions about the
product, please contact technical support engineers, hardware
installation engineers, commissioning engineers, or maintenance
engineers for assistance.

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NetCol8000-A013 In-room Air Cooled Smart Cooling Product
User Manual (800 mm Width)

Issue Date

06 2022-11-25

HUAWEI TECHNOLOGIES CO., LTD.

Copyright © Huawei Technologies Co., Ltd. 2022. 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:

https://e.huawei.com

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NetCol8000-A013 In-room Air Cooled Smart Cooling Product User Manual (800 mm Width)

About This Document

Overview
This document describes the NetCol8000-A013 in-room air cooled smart cooling product in terms of its overview, installation, commissioning, controller, system operation and maintenance, helping readers understand how to use and maintain the product.

Intended Audience
The document is intended for:
Technical support engineers Hardware installation engineers Commissioning engineers Maintenance engineers

Symbol Conventions

The symbols that may be found in this document are defined as follows.

Symbol

Description
Indicates a hazard with a high level of risk which, if not avoided, will result in death or serious injury.
Indicates a hazard with a medium level of risk which, if not avoided, could result in death or serious injury.
Indicates a hazard with a low level of risk which, if not avoided, could result in minor or moderate injury.
Indicates a potentially hazardous situation which, if not avoided, could result in equipment damage, data loss, performance deterioration, or other unanticipated results. NOTICE is used to address practices not related to personal injury.

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About This Document

Symbol

Description
Supplements the important information in the main text.
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 in previous issues.
Issue 06 (2022-11-25)
Updated the procedure for replacing the main control board of the indoor unit. Updated the Alarm Reference.
Issue 05 (2020-11-09)
Updated the safety information.
Issue 04 (2019-09-18)
Updated the 808 alarm.
Issue 03 (2019-01-15)
Updated the document name.
Issue 02 (2018-12-10)
Updated the installation scenarios and technical specifications.
Issue 01 (2018-07-30)
This issue is the first official release.

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iii

NetCol8000-A013 In-room Air Cooled Smart Cooling Product User Manual (800 mm Width)

Contents

About This Document…………………………………………………………………………………………………. ii
1 Safety Information…………………………………………………………………………………………………… 1
1.1 General Safety…………………………………………………………………………………………………………………………………………………….. 1 1.2 Personnel Requirements……………………………………………………………………………………………………………………………………. 4 1.3 Electrical Safety…………………………………………………………………………………………………………………………………………………… 4 1.4 Installation Environment Requirements………………………………………………………………………………………………………….. 6 1.5 Mechanical Safety………………………………………………………………………………………………………………………………………………. 8 1.6 Cooling System Safety………………………………………………………………………………………………………………………………………10 1.7 Others………………………………………………………………………………………………………………………………………………………………… 11
2 Overview………………………………………………………………………………………………………………… 12
2.1 Model Description……………………………………………………………………………………………………………………………………………. 12 2.2 Product Composition……………………………………………………………………………………………………………………………………….. 14 2.2.1 Purpose…………………………………………………………………………………………………………………………………………………………… 14 2.2.2 Main Components…………………………………………………………………………………………………………………………………………. 14 2.2.2.1 Indoor Unit Description…………………………………………………………………………………………………………………………….. 14 2.2.2.2 Outdoor Unit………………………………………………………………………………………………………………………………………………. 17 2.2.2.3 Controller…………………………………………………………………………………………………………………………………………………….. 19 2.2.2.4 Monitoring System…………………………………………………………………………………………………………………………………….. 20 2.2.3 Physical Ports…………………………………………………………………………………………………………………………………………………. 20 2.2.4 Operating Environment Specifications……………………………………………………………………………………………………….. 21 2.2.5 Technical Specifications………………………………………………………………………………………………………………………………… 23
3 Installation………………………………………………………………………………………………………………26
3.1 Tools…………………………………………………………………………………………………………………………………………………………………… 26 3.2 Materials……………………………………………………………………………………………………………………………………………………………. 28 3.2.1 Refrigerant R410A…………………………………………………………………………………………………………………………………………. 28 3.2.2 Refrigerant Oil RB75EA………………………………………………………………………………………………………………………………… 30 3.2.3 Pipe………………………………………………………………………………………………………………………………………………………………….. 30 3.2.4 Pipe Support…………………………………………………………………………………………………………………………………………………… 33 3.2.5 Cable……………………………………………………………………………………………………………………………………………………………….. 33 3.3 Layout Requirements……………………………………………………………………………………………………………………………………….. 34 3.3.1 Indoor Unit Space Requirements………………………………………………………………………………………………………………… 34 3.3.2 Outdoor Unit Space Requirements…………………………………………………………………………………………………………….. 36

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3.4 Layout Principles………………………………………………………………………………………………………………………………………………. 38 3.5 Holes………………………………………………………………………………………………………………………………………………………………….. 39 3.6 Checking the Nitrogen Pressure…………………………………………………………………………………………………………………….. 40 3.7 Securing an Indoor Unit………………………………………………………………………………………………………………………………….. 41 3.8 Securing an Outdoor Unit………………………………………………………………………………………………………………………………..43 3.9 Connecting Refrigerant Pipes…………………………………………………………………………………………………………………………. 45 3.10 Connecting Water Pipes………………………………………………………………………………………………………………………………… 49 3.10.1 (Optional) Connecting the Humidifier Water Inlet Pipe……………………………………………………………………….. 49 3.10.2 Connecting the Condensate Drainpipe…………………………………………………………………………………………………….. 51 3.11 Connecting Cables………………………………………………………………………………………………………………………………………….. 53 3.11.1 Cables to be Connected……………………………………………………………………………………………………………………………… 53 3.11.2 Connecting the Power Cable to an Indoor Unit……………………………………………………………………………………… 54 3.11.3 (Optional) Connecting the Signal Cable to the Indoor Unit………………………………………………………………….54 3.11.4 Connecting the Outdoor Unit Power Cable and the Signal Cable Between Indoor and Outdoor Units………………………………………………………………………………………………………………………………………………………………………….. 55 3.11.5 (Optional) Connecting Teamwork and Monitoring Cables…………………………………………………………………… 55 3.11.6 Cable Routes………………………………………………………………………………………………………………………………………………… 57 3.12 Leakage Test with Nitrogen………………………………………………………………………………………………………………………….. 58 3.13 Vacuumizing……………………………………………………………………………………………………………………………………………………. 59 3.14 Verifying the Installation………………………………………………………………………………………………………………………………. 62
4 Power-On Commissioning……………………………………………………………………………………… 64
4.1 Controller Description……………………………………………………………………………………………………………………………………… 64 4.2 Device Power-On……………………………………………………………………………………………………………………………………………….67 4.3 Setting Temperature and Humidity Values……………………………………………………………………………………………………71 4.4 (Optional) Setting Teamwork Parameters……………………………………………………………………………………………………. 72 4.5 (Optional) Setting Monitoring Parameters………………………………………………………………………………………………….. 75 4.6 Component Commissioning……………………………………………………………………………………………………………………………. 76 4.7 Checking After Commissioning………………………………………………………………………………………………………………………. 79
5 System Operation and Maintenance…………………………………………………………………….. 80
5.1 Routine Maintenance………………………………………………………………………………………………………………………………………. 80 5.1.1 Routine Maintenance Overview………………………………………………………………………………………………………………….. 80 5.1.2 Preventive Maintenance Tables…………………………………………………………………………………………………………………… 81 5.2 Troubleshooting………………………………………………………………………………………………………………………………………………… 83 5.3 Alarm Reference……………………………………………………………………………………………………………………………………………….. 86 5.4 Component Replacement……………………………………………………………………………………………………………………………… 108 5.4.1 Replacing Indoor Unit Components…………………………………………………………………………………………………………. 108 5.4.1.1 Replacing an Air Filter…………………………………………………………………………………………………………………………….. 108 5.4.1.2 (Optional) Replacing a Humidifier Water Pump………………………………………………………………………………….109 5.4.1.3 (Optional) Replacing an Electric Heater………………………………………………………………………………………………. 110 5.4.1.4 (Optional) Replacing a Wet Film Humidifier………………………………………………………………………………………..112 5.4.1.5 Replacing an Indoor Fan…………………………………………………………………………………………………………………………. 113 5.4.1.6 Replacing a Main Control Board……………………………………………………………………………………………………………. 114

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Contents

5.4.1.7 Replacing an Indoor Fan Drive Board…………………………………………………………………………………………………….117 5.4.1.8 Replacing the LCD……………………………………………………………………………………………………………………………………. 118 5.4.1.9 Replacing an EEV……………………………………………………………………………………………………………………………………… 118 5.4.2 Replacing Outdoor Unit Components……………………………………………………………………………………………………….120 5.4.2.1 Replacing an Outdoor Fan……………………………………………………………………………………………………………………… 120 5.4.2.2 Replacing a Control Board……………………………………………………………………………………………………………………….122 5.4.2.3 Replacing a Module Board……………………………………………………………………………………………………………………… 123 5.4.2.4 Replacing a Safety Valve…………………………………………………………………………………………………………………………. 125 5.4.2.5 Replacing a Filter Dryer…………………………………………………………………………………………………………………………… 126 5.4.2.6 Replacing an Inductor……………………………………………………………………………………………………………………………… 127
6 FAQ……………………………………………………………………………………………………………………….. 130
6.1 How Do I Check Temperature and Humidity Parameters?………………………………………………………………………. 130 6.2 How Do I Check Device Running State?………………………………………………………………………………………………………131 6.3 How Do I Check Teamwork State?………………………………………………………………………………………………………………. 132 6.4 How Do I Query Device Runtime?………………………………………………………………………………………………………………..134 6.5 How Do I Query Alarms?………………………………………………………………………………………………………………………………. 135 6.6 How Do I Perform User Settings?………………………………………………………………………………………………………………… 137 6.7 How Do I Reset a User Password?………………………………………………………………………………………………………………. 139 6.8 How Do I Set Alarm Parameters?………………………………………………………………………………………………………………… 142 6.9 How Do I Restore Default Settings?……………………………………………………………………………………………………………. 145 6.10 How Do I Set a New Administrator Password?……………………………………………………………………………………….. 148 6.11 How Do I Clear Total Runtime of a Device?…………………………………………………………………………………………….. 151 6.12 How Do I Calibrate a Sensor?…………………………………………………………………………………………………………………….. 153 6.13 How Do I Upgrade Versions?……………………………………………………………………………………………………………………… 155 6.14 How Do I Import and Export Data?………………………………………………………………………………………………………….. 158 6.15 How Do I Set a New Maintenance Password?………………………………………………………………………………………… 161 6.16 How Do I View the Current Versions?………………………………………………………………………………………………………. 163
A Cooling System Layout………………………………………………………………………………………… 165
B Base Drawings……………………………………………………………………………………………………… 166
C Bracket Drawings…………………………………………………………………………………………………. 168
D Electrical Diagrams……………………………………………………………………………………………… 170
E Controller Menu…………………………………………………………………………………………………… 172
F Acronyms and Abbreviations………………………………………………………………………………..180

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1 Safety Information

1.1 General Safety

Statement

Before installing, operating, and maintaining the equipment, carefully read this document and observe all safety instructions provided herein and written on the equipment itself.
The “NOTICE”, “CAUTION”, “WARNING”, and “DANGER” statements in this document do not cover all the safety instructions. They are only supplements to the safety instructions. The Company will not be liable for any consequence caused by the violation of general safety requirements or design, production, and usage safety standards.
Ensure that the equipment is used in environments that meet its design specifications. Otherwise, the equipment may become faulty, and the resulting equipment malfunction, component damage, personal injuries, or property damage will not be covered under the warranty.
Follow local laws and regulations when installing, operating, or maintaining the equipment. The safety instructions in this document are only supplements to local laws and regulations.
The Company will not be liable for any consequences of the following circumstances:
Operation beyond the conditions specified in this document
Installation or use in environments which are not specified in relevant international or national standards
Unauthorized modifications to the product or software code or removal of the product
Failure to follow the operation instructions and safety precautions on the product and in this document
Equipment damage due to force majeure, such as earthquakes, fire, and storms

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Damage caused during transportation by the customer
Storage conditions that do not meet the requirements specified in this document

General Requirements
Do not install, use, or operate outdoor equipment and cables (including but not limited to moving equipment, operating equipment and cables, inserting connectors to or removing connectors from signal ports connected to outdoor facilities, working at heights, and performing outdoor installation) in harsh weather conditions such as lightning, rain, snow, and level 6 or stronger wind.
Before installing, operating, or maintaining the equipment, remove any conductive objects such as watches or metal jewelry like bracelets, bangles, and rings to avoid electric shock.
When installing, operating, or maintaining the equipment, wear dedicated protective gears such as insulation gloves, goggles, and safety clothing, helmet, and shoes, as shown in the following figure.

Follow the specified procedures for installation, operation, and maintenance.
Before handling a conductor surface or terminal, measure the contact point voltage and ensure that there is no risk of electric shock.
After installing the equipment, remove idle packing materials such as cartons, foam, plastics, and cable ties from the equipment area.
In the case of a fire, immediately leave the building or the equipment area and activate the fire alarm or call emergency services. Do not re-enter the building or affected area until it has been deemed safe by qualified professionals.
Do not stop using protective devices. Pay attention to the warnings, cautions, and related precautionary measures in this document and on the equipment. Promptly replace warning labels that have worn out.
Keep irrelevant people away from the equipment. Only operators are allowed to access the equipment.
Use insulated tools or tools with insulated handles, as shown in the following figure.

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All cable holes should be sealed. Seal the used cable holes with firestop putty. Seal the unused cable holes with the caps delivered with the cabinet. The following figure shows the criteria for correct sealing with firestop putty.

Do not scrawl, damage, or block any warning label on the equipment.
When installing the equipment, use a torque wrench with a proper range to tighten the screws. When using a wrench to tighten the screws, ensure that the wrench does not tilt and the torque error does not exceed 10% of the specified value.
Do not work with power on during installation.
Repaint any paint scratches caused during equipment transportation or installation in a timely manner. Equipment with scratches cannot be exposed to an outdoor environment for an extended period of time.
Before operations, ensure that the equipment is firmly secured to the floor or other solid objects, such as a wall or an installation rack.
Do not use water to clean electrical components inside or outside of a cabinet.
Do not change the structure or installation sequence of equipment without permission.
Do not touch a running fan with your fingers, components, screws, tools, or boards before the fan is powered off or stops running.

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Personal Safety
If there is a likelihood of personal injury or equipment damage during operations, immediately stop, report the case to the supervisor, and take feasible protective measures.
To avoid electric shock, do not connect safety extra-low voltage (SELV) circuits to telecommunication network voltage (TNV) circuits.
Do not power on the equipment before it is installed or confirmed by professionals.

1.2 Personnel Requirements
Personnel who plan to install or maintain the equipment must receive thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.
Only qualified professionals or trained personnel are allowed to install, operate, and maintain the equipment.
Only qualified professionals are allowed to remove safety facilities and inspect the equipment.
Personnel who will operate the equipment, including operators, trained personnel, and professionals, should possess the local national required qualifications in special operations such as high-voltage operations, working at heights, and operations of special equipment.
Professionals: personnel who are trained or experienced in equipment operations and are clear of the sources and degree of various potential hazards in equipment installation, operation, maintenance
Trained personnel: personnel who are technically trained, have required experience, are aware of possible hazards on themselves in certain operations, and are able to take protective measures to minimize the hazards on themselves and other people
Operators: operation personnel who may come in contact with the equipment, except trained personnel and professionals
Only professionals or authorized personnel are allowed to replace the equipment or components (including software).

1.3 Electrical Safety

Grounding

For the equipment that needs to be grounded, install the ground cable first when installing the equipment and remove the ground cable last when removing the equipment.
Do not damage the ground conductor.
Do not operate the equipment in the absence of a properly installed ground conductor.
Ensure that the equipment is connected permanently to the protective ground. Before operating the equipment, check its electrical connection to ensure that it is securely grounded.

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General Requirements
Use dedicated insulated tools when performing high-voltage operations.
AC and DC Power

DANGER
Do not connect or disconnect power cables with power on. Transient contact between the core of the power cable and the conductor will generate electric arcs or sparks, which may cause fire or personal injury.

Cabling

If a “high electricity leakage” tag is attached on the equipment, ground the protective ground terminal on the equipment enclosure before connecting the AC power supply; otherwise, electric shock as a result of electricity leakage may occur.
Before installing or removing a power cable, turn off the power switch.
Before connecting a power cable, check that the label on the power cable is correct.
If the equipment has multiple inputs, disconnect all the inputs before operating the equipment.
A circuit breaker equipped with a residual current device (RCD) is not recommended.
A damaged power cable must be replaced by the manufacturer, service agent, or professionals to avoid risks.
High voltage operations and installation of AC-powered facilities must be performed by qualified personnel.
When routing cables, ensure that a distance of at least 30 mm exists between the cables and heat-generating components or areas. This prevents damage to the insulation layer of the cables.
Do not route cables behind the air intake and exhaust vents of the equipment.
Ensure that cables meet the VW-1 or ZB flame spread rating requirements or higher.
Bind cables of the same type together. When routing cables of different types, ensure that they are at least 30 mm away from each other.
If an AC input power cable is connected to the cabinet from the top, bend the cable in a U shape outside the cabinet and then route it into the cabinet.
When the temperature is low, violent impact or vibration may damage the plastic cable sheathing. To ensure safety, comply with the following requirements:
Cables can be laid or installed only when the temperature is higher than 0°C. Handle cables with caution, especially at a low temperature.
Cables stored at subzero temperatures must be stored at room temperature for at least 24 hours before they are laid out.

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Do not perform any improper operations, for example, dropping cables directly from a vehicle.
When selecting, connecting, and routing cables, follow local safety regulations and rules.

ESD

NOTICE
The static electricity generated by human bodies may damage the electrostaticsensitive components on boards, for example, the large-scale integrated (LSI) circuits.
Wear ESD gloves or a well-grounded ESD wrist strap when touching the device or handling boards or application-specific integrated circuits (ASICs).
When holding a board, hold its edge without touching any components. Do not touch the components with your bare hands.
Package boards with ESD packaging materials before storing or transporting them.
Figure 1-1 Wearing an ESD wrist strap

Neutral-Ground Voltage
It is recommended that the three-phase loads be equalized and the neutralground voltage be kept at less than 2 V to meet power distribution requirements.

1.4 Installation Environment Requirements
To prevent fire due to high temperature, ensure that the ventilation vents or heat dissipation system are not blocked when the equipment is running.
Install the equipment in an area far away from liquids. Do not install it under areas prone to condensation, such as under water pipes and air exhaust vents, or areas prone to water leakage, such as air conditioner vents, ventilation

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vents, or feeder windows of the equipment room. Ensure that no liquid enters the equipment to prevent faults or short circuits.
If any liquid is detected inside the equipment, immediately disconnect the power supply and contact the administrator.
Do not expose the equipment to flammable or explosive gas or smoke. Do not perform any operation on the equipment in such environments.
Ensure that the equipment room provides good heat insulation, and the walls and floor are dampproof.
Install a rat guard at the door of the equipment room.

Installation at Heights
Working at heights refers to operations that are performed at least 2 meters above the ground.
Do not work at heights if the steel pipes are wet or other potential danger exists. After the preceding conditions no longer exist, the safety director and relevant technical personnel need to check the involved equipment. Operators can begin working only after obtaining consent.
When working at heights, comply with local relevant laws and regulations.
Only trained and qualified personnel are allowed to work at heights.
Before working at heights, check the climbing tools and safety gears such as safety helmets, safety belts, ladders, springboards, scaffolding, and lifting equipment. If they do not meet the requirements, take corrective measures or disallow working at heights.
Wear personal protective equipment such as the safety helmet and safety belt or waist rope and fasten it to a solid structure. Do not mount it on an insecure moveable object or metal object with sharp edges. Make sure that the hooks will not slide off.
Set a restricted area and eye-catching signs for working at heights to warn away irrelevant personnel.
Carry the operation machinery and tools properly to prevent them from falling off and causing injuries.
Personnel involving working at heights are not allowed to throw objects from the height to the ground, or vice versa. Objects should be transported by tough slings, hanging baskets, highline trolleys, or cranes.
Ensure that guard rails and warning signs are set at the edges and openings of the area involving working at heights to prevent falls.
Do not pile up scaffolding, springboards, or other sundries on the ground under the area involving working at heights. Do not allow people to stay or pass under the area involving working at heights.
Inspect the scaffolding, springboards, and workbenches used for working at heights in advance to ensure that their structures are solid and not overloaded.
Any violations must be promptly pointed out by the site manager or safety supervisor and the involved personnel should be prompted for correction. Personnel who fail to stop violations will be forbidden from working.

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1.5 Mechanical Safety

Hoisting

Do not walk under hoisted objects.
Only trained and qualified personnel should perform hoisting operations.
Check that hoisting tools are available and in good condition.
Before hoisting objects, ensure that hoisting tools are firmly secured onto a load-bearing object or wall.
Ensure that the angle formed by two hoisting cables is no more than 90 degrees, as shown in the following figure.

Do not drag steel ropes and hoisting tools or bump hoisted objects against hard objects during hoisting.

Using Ladders

Use wooden or fiberglass ladders when you need to perform live working at heights.
When a step ladder is used, ensure that the pull ropes are secured and the ladder is held firm.
Before using a ladder, check that it is intact and confirm its load bearing capacity. Do not overload it.
Ensure that the ladder is securely positioned. The recommended angle for a ladder against the floor is 75 degrees, as shown in the following figure. An angle ruler can be used to measure the angle. Ensure that the wider end of the ladder is at the bottom, or protective measures have been taken at the bottom to prevent the ladder from sliding.

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When climbing a ladder, take the following precautions to reduce risks and ensure safety: Keep your body steady. Do not climb higher than the fourth rung of the ladder from the top. Ensure that your body’s center of gravity does not shift outside the legs of the ladder.
Drilling Holes
When drilling holes into a wall or floor, observe the following safety precautions:

NOTICE
Do not drill holes into the equipment. Doing so may affect the electromagnetic shielding of the equipment and damage components or cables inside. Metal shavings from drilling may short-circuit boards inside the equipment.
Obtain consent from the customer and contractor before drilling holes. Wear goggles and protective gloves when drilling holes. When drilling holes, protect the equipment from shavings. After drilling, clean
up any shavings that have accumulated inside or outside the equipment.
Moving Heavy Objects

DANGER When pulling the equipment out of a cabinet, be aware of unstable or heavy objects on the cabinet to prevent injury.
Be cautious to avoid injury when moving heavy objects.

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When moving the equipment by hand, wear protective gloves to prevent injuries.
Move or lift the equipment by holding its handles or lower edges. Do not hold the handles of modules (such as power supply units, fans, and boards) that are installed in the equipment because they cannot support the weight of the equipment.
Avoid scratching the cabinet surface or damaging cabinet components and cables during equipment transportation.
When transporting the equipment using a forklift truck, ensure that the forks are properly positioned so that the equipment does not topple. Before moving the equipment, secure it to the forklift truck using ropes. When moving the equipment, assign dedicated personnel to take care of it.
Choose a road with good conditions or sea for transportation to ensure equipment safety. Avoid tilt or jolt during transportation.
Move the cabinet with caution. Any bumping or falling may damage the equipment.

1.6 Cooling System Safety

Welding

At least two persons are required on a welding site.
A welder must have a work permit.
A welding site must be free from inflammables.
Ensure that a fire extinguisher, wet wiper, and water container are available.
A burning welding torch must not be placed on a component or on the floor, and must not be placed in a metal container with acetylene and oxygen. Otherwise, the gas may leak and cause a fire.
High-temperature pipes after welding must be promptly cooled.
Do not weld or cut on pressurized containers or pipes. Electric devices must be powered off before welding.

High Temperature and Pressure
When maintaining or replacing components, pay attention to hightemperature components (such as the compressor, refrigerant pipe, and electric heater) to prevent scalds.
When maintaining or replacing components, pay attention to high-pressure components (such as the compressor and refrigerant pipe) to prevent the refrigerant system from being cracked or exploded due to misoperations.

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Refrigerant Frostbite
Refrigerant leakage may cause frostbite. Take protective measures (for example, wear antifreeze gloves) when handling refrigerant.
Storage and Recycling
Do not store devices near a heat source or under direct sunshine. Keep devices away from fire or high-temperature objects, especially devices
injected with pressurized nitrogen or refrigerant; otherwise, explosion or refrigerant leakage may occur, causing personal injury.

The sign indicates that the product cannot be disposed of with other

wastes that have a shell in European Union (EU) areas. To avoid environment

pollution and harm to human health, wastes must be classified and recycled.

This also promotes resource reuse. When recycling a device, fill in the device

information in the recycling collection system or contact your dealer for help.

The dealer can help you recycle devices in a safe and environment-friendly

way.

1.7 Others
Exercise caution when shutting down the smart cooling product. Doing so may cause equipment and room overheating, which will damage the equipment.

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2 Overview
This chapter describes the NetCol8000-A in terms of its model number description, positioning, benefits, composition, typical application scenarios, environmental specifications, and performance specifications.
2.1 Model Description
Indoor Unit Model Number Description
This document involves the following product models: NetCol8000-A013U4WE0 NetCol8000-A013U40E0
Figure 2-1 Model description

No. 1
2 3 4 5 6
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Meaning Data center smart cooling Series Cooling mode Model code Airflow mode Power supply

Value Description NetCol: data center smart cooling product
8000: in-room smart cooling A: air cooled 013: model code 013 U: upflow 4: 380415 V, three-phase, 50/60 Hz

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2 Overview

No.

Meaning

Value Description

Heater and

0: none

humidifier type

W: level-1 electric heater and wet film

humidifier

Packaging type

E: package for international markets

Special identifier for 0: none

orders

Outdoor Unit Model Number Description
This document involves the following product models: NetCol500-A0226C3E0
Figure 2-2 Model description

No.

Meaning

Value Description

Data center smart

NetCol: data center smart cooling product

cooling

Series

500: outdoor unit

Cooling mode

A: air cooled

Model code

022: model code 022

Power supply

6: 220240 V, 1-phase, 50/60 Hz

Climate type

C: common non-corrosive environment

Fan type

3: DC fan

Packaging type

E: package for international markets

Special identifier for 0: none

orders

NOTE
The naming conventions are used only to illustrate the configuration of a specific model and do not indicate optional items. For details about the optional configuration of the product, see the section about technical specifications.

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2.2 Product Composition
2.2.1 Purpose
Fans absorb indoor hot air that then moves to the evaporator with heat transmitted to the refrigerant. The refrigerant is discharged to the outdoor unit using the compressor, releasing heat to the outdoor environment. The indoor unit and outdoor condenser are connected using refrigerant pipes in a fully sealed manner.
Figure 2-3 Product composition

(1) NetCol8000-A013
2.2.2 Main Components

(2) NetCol500-A022

2.2.2.1 Indoor Unit Description

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Appearance and Dimensions
Figure 2-4 Appearance and dimensions (unit: mm)

2 Overview

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Appearance
Figure 2-5 Appearance introduction

2 Overview

(1) Air exhaust vent (4) Holes

(2) LCD (5) Key hole

(3) Air return vent

Cooling Components
The indoor unit consists of cooling components such as the DC fan, evaporator, electronic expansion valve (EEV), electric heater (optional), wet film humidifier (optional), and stop valve.
DC fan
The DC centrifugal fan is used, which supports stepless speed adjustment.
Evaporator
The evaporator adopts the inner threaded copper pipes and blue hydrophilic aluminum foil to prevent water blowing due to condensate water accumulation and improve heat exchange performance. The evaporator adopts the I-shaped design, which features small wind resistance and high sensible heat ratio.
EEV
The throttling device is a name-brand EEV. The system controls the EEV to quickly and accurately adjust the refrigerant volume based on the temperature and humidity requirements. In this way, system stability and reliability can be ensured, and balanced temperature and humidity can be achieved in the equipment room.
Electric heater

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The positive temperature coefficient (PTC) electric heater features quick start, large heating capacity, and balanced heat dissipation. It automatically adjusts heating capacity and provides two protection mechanisms to ensure the secure and stable running of the equipment.
Wet film humidifier
The wet film humidifier has low water quality requirements and high environment adaptability. It has a simple structure and is easy to remove, clean, and maintain. It consumes less power, saving more than 95% of energy compared with a traditional electrode humidifier. The humidifier complies with China Compulsory Certification.
Stop valve
Connects pipes between indoor and outdoor units without welding. Huawei’s unique end face sealing design ensures high reliability and facilitates installation and maintenance.

2.2.2.2 Outdoor Unit

Appearance and Dimensions
Figure 2-6 Appearance and dimensions (unit: mm)

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Appearance
Figure 2-7 Appearance introduction

2 Overview

(1) Fan (4) Handle

(2) Fan (5) Electric control box

(3) Pipe stop valve and protective cover

Cooling Components
The standard outdoor unit is composed of the DC variable-frequency compressor, oil separator, dryer, liquid storage tank, DC fan, and other cooling components.
Compressor
The DC variable-frequency compressor provides the cooling capacity ranging from 30% to 100%.
Oil separator
The oil separator separates the lubricant brought out due to discharge of the compressor and brings back the separated lubricant to the compressor.
Dryer
The filter drains the water in the refrigerant pipes and filters out foreign matter, which reduces the probability of damage to the components and ensures the efficient and reliable operating. It is installed in the outdoor unit and easy to maintain.
Liquid storage tank
The system is equipped with a liquid storage tank, which supplies refrigerant based on the system loads, to ensure reliable system running. The tank has a safety valve, which ensures the safe and reliable transportation of the system with refrigerant.

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Fan The DC axial fan is used, which supports stepless speed adjustment.

2.2.2.3 Controller

Appearance
The controller uses an LCD with a white backlight to display the working status, sensor data, and running status and runtime of the key components for the air conditioner. The user-friendly interface is protected by multiple levels of passwords to avoid illegal operations. The controller provides automatic recovery upon power failure, high/low voltage protection, and audible/visual alarm functions. You can adjust the parameters and running parameters of the unit based on the site requirements to better meet the actual requirements. The following shows the appearance of a controller.
Figure 2-8 Controller appearance

Teamwork Function
The controller has powerful teamwork control functions. Each smart cooling product is equipped with a controller. Based on the site requirements, a maximum of 32 smart cooling products in one area can be grouped for teamwork control, with smart cooling product 1 as the master to implement central control and management. Teamwork control functions include:
Backup: When a smart cooling product in the group is faulty, the backup smart cooling product starts to operate automatically to improve the reliability of the smart cooling product system.
Rotation: The backup unit is switched periodically to balance the service life of each unit.
On-demand operation: The number of operating smart cooling products varies with thermal loads in the equipment room to save energy.

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Competition prevention: To save energy, a mechanism is adopted to prevent the smart cooling products in the same equipment room operating in opposite status (such as humidification and dehumidification).

2.2.2.4 Monitoring System

The monitoring system provides logic control, data collection, control demand delivering, alarm reporting, data storage, user right management, and teamwork control functions.

Figure 2-9 Monitoring (Modbus-RTU)

2.2.3 Physical Ports

Table 2-1 Physical ports

Name

Specifications

Indoor unit Refrigerant liquid pipe

Outer diameter: 3/8 inch (9.52 mm); end sealing stop valve

Refrigerant gas pipe Outer diameter: 3/4 inch (19.05 mm); end sealing stop valve

Humidifier water inlet pipe

G 1/2 inch

Drainpipe

BSPP 3/4 inch

Outdoor unit

Refrigerant liquid pipe

Outer diameter: 3/8 inch (9.52 mm); end sealing stop valve

Refrigerant gas pipe Outer diameter: 3/4 inch (19.05 mm); end sealing stop valve

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2.2.4 Operating Environment Specifications

2 Overview

Operating Environment

Table 2-2 Operating environment

Item

Specifications

Operating

040°C

temperature

Operating humidity

5%95% RH

Operating ambient temperature

1832°C, temperature adjustment accuracy: ±1°C

Operating humidity

20%80% RH, humidity adjustment precision: ±5% RH

Storage temperature

40°C to +70°C (indoor unit) 40°C to +70°C (outdoor unit without refrigerant) 40°C to +55°C (outdoor unit with refrigerant)

Storage humidity

5%95% RH (non-condensing)

Applicable outdoor temperature

20°C to +55°C

Altitude

04000 m, When the altitude exceeds 1000 m, the power should be derated. For details about derating coefficients, see Table 2-3.

Table 2-3 Derating coefficient

Altitu 0 de (m)

1000 1500

Air

volum

coeffic

ient

0.887 0.835

2000 0.785

2500 0.737

3000 0.692

3500 0.649

4000 0.608

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Altitu 0 de (m)

1000 1500 2000 2500 3000 3500 4000

Coolin 1 g capaci ty coeffic ient

0.940 0.909 0.878 0.846 0.815 0.784 0.753

Note: The sensible heat ratio under rated working conditions is always 100%.

Installation Requirements

Table 2-4 Installation requirements

Item

Specifications

Room door

Width 1.2 m; height 2.3 m

Floor

Floor bearing capacity 350 kg/m2

Equivale nt length of the oneway pipe

60 m

Height differen ce betwee n indoor and outdoor units

If the outdoor unit is placed higher than the indoor unit, the maximum vertical distance between them is 20 m.
If the indoor unit is placed higher than the outdoor unit, the maximum vertical distance between them is 5 m.

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Item

Specifications

Water supply

The inlet water pressure of the humidifier should be 0.10.7 MPa, and the temperature should range from 1°C to 40°C.
The wet film humidifier uses tap water and does not require an additional water treatment device at the water inlet. The water requirements are as follows:
Non-freezing and nephelometric turbidity units (NTU) < 3
No visible substances
6.5 pH value 8.5
Total hardness (in CaCO3) 450 mg/L
Note: Refer to Standards for Drinking Water Quality (GB 5749-2006).

Power require ments

Leakage circuit breakers are not recommended for the main power route. If a leakage circuit breaker is required by the customer or local regulations, select the residual current circuit breaker (RCCB) that is insensitive to single-phase DC pulsation and transient impulse current.

Note: If the requirements are not met, contact Huawei technical support for an optimized solution.

2.2.5 Technical Specifications
All models (indoor and outdoor units) of this product meet the environmental protection requirements. The following figure shows the environmental protection mark.
Figure 2-10 Environmental protection mark

Table 2-5 General specifications for the normal-temperature indoor unit

Item

Specifications

Cooling mode

Air cooled

Refrigera R410A nt

Cooling 13 kW capacitya

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Item

Specifications

Airflow mode

Upflow

Air volume

3600 m3/h

Maximum current

Cooling only indoor unit (excluding the outdoor unit): 5 A
Indoor unit with heating and humidification functions (excluding the outdoor unit): 26 A
Outdoor unit that obtains power from the indoor unit (including the outdoor unit): 30 A

Pipe routing mode

Bottom pipe routing and side pipe routing

Cabling Bottom cabling and side cabling

IP rating IP20

Dimensio 1886 mm × 800 mm × 664 mm ns (H x W x D)

Package dimensio ns (H x W x D)

2050 mm × 900 mm × 765 mm

Net weight (full configura tion)

153 kg

Gross weight (full configura tion)

178 kg

a: Tested under rated working conditions (indoor dry-bulb temperature: 24°C; indoor wet-bulb temperature: 17°C; outdoor dry-bulb temperature: 35°C; external static pressure: 0 Pa; 10 m long pipe; no height difference)

Table 2-6 Optional specifications for the normal-temperature indoor unit

Item

NetCol8000-A013U40E0

NetCol8000-A013U4WE0

Power supply 380415 V AC, 50/60 Hz, 3 Ph+N+PE Voltage tolerance: 15% to +10%; frequency tolerance: ±3 Hz

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Item

NetCol8000-A013U40E0

Power supply Single power supply

Heating function

None

Humidificatio None n function

Heating

–

capacity

Humidifying capacity

2 Overview NetCol8000-A013U4WE0 Single power supply Available Available 4 kW 3 kg/h

Table 2-7 Specifications of outdoor unit with standard configurations

Item

NetCol500-A0226C3E0

Power supply

220240 V AC, 50 Hz/60 Hz, 1 Ph+N+PE
Voltage tolerance: 15% to +10%; frequency tolerance: ±3 Hz

Maximum current

30 A

Number of fans

Net weight/Gross weight 117 kg/135 kg

IP rating

IPX4

Environment type

Class B

Altitude

04000 m (derated when the altitude is greater than 1000 m)

Outdoor unit application environments are classified by severity as follows:
Class A (controlled environment): indoor environments where temperature and humidity are controlled, including rooms where people live.
Class B (uncontrollable environment): indoor environments where the ambient temperature and humidity are not controlled or general outdoor environments with simple shielding measures where the humidity reaches 100% occasionally
Class C (harsh environment): sea environments, or outdoor land environments or environments with simple shielding measures, which are within 3.7 km of the sea or within 1.2 km of a pollution source
Class D (marine environment): environments within 500 m of the coast

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3.1 Tools

Table 3-1 General tools

Name, Specifications, and Appearance

Protective gloves

Marker

Measuring tape (5 m)

Step ladder (2 m)

Adjustable wrench (6″)

Phillips screwdriver (M4 and M6)

Flat-head screwdriver (2-5
mm)

Torque wrench

Right angle

Socket wrench (M6, M8, and M12)

Hex key (5 mm)

Pipe bender

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Cutter

Name, Specifications, and Appearance

Diagonal pliers

Cable ties

Polyvinyl chloride (PVC) insulation tape

Wire stripper Flashlight

Multimeter

Crimping tool

Hammer drill Pallet truck

N/A

Table 3-2 Special tools

Name, Specifications, and Appearance

Antifreeze gloves Electric balance

Welding torch

5% silver solder

Oxygen

Acetylene

Hot melt device

Clamp meter

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Name, Specifications, and Appearance

Insulation gloves Pressure gauge (1 PCS)a

Leather hose (3 PCS)a

Nitrogenb

Reducing valvec Vacuum pumpd

Water pipe thread N/A sealante
N/A

a: Pressure gauge and leather hose: dedicated to R410A, pressure gauge measurement range 4.0 MPa, and the leather hose tolerance range 4.5 MPa. The size of needle valve in the unit is 1/4 inch. Purchase a conversion adapter if you have a different size of valve on leather hoses. b: Dry nitrogen. c: Nitrogen reducing valve: A reducing valve must be installed on the head of the nitrogen cylinder, and the reducing valve range 4.0 MPa. d: Vacuum pump airflow: 2-4 L/s, absolute vacuum: 60 Pa. e: For equipment with humidifiers, ensure that the following requirements are met: Applicable to all pipe materials Anaerobic metal pipe thread sealant with PTEF as the padding Maximum gap: 0.5 mm Pressure resistance: above 1.6 MPa Compliant with the industry standard JBT7311-2008 Technical Specification
for the Application of Anaerobic Glue in Engineering Machinery.
3.2 Materials
3.2.1 Refrigerant R410A

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CAUTION
Do not use low-quality refrigerant. Huawei is not responsible for any damage caused by low-quality refrigerant.
Follow these suggestions to choose high-quality refrigerant:
1. Refrigerant from name brands such as DuPont, Daikin, and Honeywell is recommended.
2. Contact the refrigerant producer to confirm the refrigerant authenticity. 3. As shown in Figure 3-1, place the refrigerant in an indoor place with constant
temperature and humidity for 24 hours. Then, use a thermometer to measure the temperature of the refrigerant tank outer surface and connect a pressure gauge to the pressure tank to measure the internal pressure. Find the saturation pressure corresponding to the measured outer surface temperature from Table 3-3. If the deviation between the saturation pressure and the measured internal pressure is greater than 0.2 MPa, the refrigerant does not meet the requirements and needs to be replaced.
Figure 3-1 Checking the refrigerant

Table 3-3 Mapping between temperatures and R410A saturation pressure

Temperatur e (ºC)

Saturation Pressure Gauge Pressure (MPa)

Temperatu re (ºC)

Saturation Pressure Gauge Pressure (MPa)

Temperatu re (ºC)

Saturatio n Pressure Gauge Pressure (MPa)

0.7

1.31

2.21

0.73

1.35

2.27

0.75

1.39

2.33

0.78

1.43

2.39

0.81

1.47

2.45

0.84

1.51

2.51

0.87

1.56

2.57

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Temperatur e (ºC)

Saturation Pressure Gauge Pressure (MPa)

Temperatu re (ºC)

Saturation Pressure Gauge Pressure (MPa)

Temperatu re (ºC)

Saturatio n Pressure Gauge Pressure (MPa)

0.9

1.60

2.63

0.93

1.65

2.7

0.96

1.69

2.76

0.99

1.74

2.83

1.02

1.79

2.9

1.05

1.84

2.97

1.09

1.89

3.04

1.12

1.94

3.11

1.16

1.99

3.19

1.19

2.04

3.26

1.23

2.1

3.34

1.27

2.15

3.2.2 Refrigerant Oil RB75EA
The refrigerant oil is RB75EA. A sufficient amount of refrigerant oil has been filled in the indoor compressor before delivery to ensure the reliable running of a 60 m long pipe. Additional refrigerant oil is not required during onsite installation. When the compressor is damaged, refrigerant oil has been filled in the compressor before the compressor is replaced. Additional refrigerant oil is not required during replacement. Add refrigerant oil based on the actual situation only when the refrigerant oil leaks and the compressor does not need to be replaced.
3.2.3 Pipe

Oil Trap

Figure 3-2 shows the oil trap specifications.

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Figure 3-2 Oil trap (unit: mm)

3 Installation

(Optional) Gas Pipe, Liquid Pipe, and Thermal Insulation Foam
Table 3-4 lists the pipe and thermal insulation foam specifications.

Table 3-4 Specifications Category Liquid pipe
Gas pipe
Thermal insulation foam

Specifications
3/8 inch (9.52 mm), wall thickness: 0.75 mm; pressure withstanding capacity 4.5 MPa
3/4 inch (19.05 mm), wall thickness: 1.0 mm; pressure withstanding capacity 4.5 MPa
13mm

Water Pipe
Figure 3-3 shows how to connect a drainpipe.

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Figure 3-3 Connecting a drainpipe

3 Installation

(1) Drainpipe connector: BSPP 3/4 inch

(2) Rigid pipe conversion adapter: BSPT 3/4 inch; connected to a rigid pipe with external threads

(3) Rigid pipe: made of PP-R or other materials

NOTE The object shown in the dotted line box is the reserved port of the smart cooling product. The conversion adapter and rigid pipe need to be purchased onsite. Figure 3-4 shows how to connect the humidifier water inlet pipe.
Figure 3-4 Connecting a humidifier water inlet pipe

(1) Internal thread connector: G 1/2 inch

(2) Rigid pipe conversion

(3) Rigid pipe: made of PP-R or

adapter: G 1/2 inch; connected other materials

to a rigid pipe with external

threads

(4) Pagoda conversion adapter: (5) Hose clamp G 1/2 inch; connected to a pipe with external threads

(6) Hose: made of EPDM or other materials

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Figure 3-5 shows supports for a refrigerant or water pipe. Select supports based on site conditions.
Figure 3-5 Pipe supports (unit: mm)

3.2.5 Cable

NOTE
The height of a U-shaped pipe clamp equals the diameter of the pipe with thermal insulation foam minus 5 mm. The pipe supports need to be purchased.
304 stainless steel is the recommended material for pipe supports and clamps. Install a support every 1500 mm in the straight sections of pipes, and 500 mm away
from each bending point in turning sections.

NOTICE
The site ground resistance must be less than 0.1 ohm. The cable flame spread rating must be at least VB. The signal cable between the indoor and outdoor units should be a shielded
cable, and the shield layer should be reliably grounded.
Table 3-5 lists the cables to be connected onsite. When connecting cables, fit them with protective hoses.

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Table 3-5 Cable specifications

Scenario

Specifications

Equipotential ground cable

6 mm2 outdoor copper cable

Indoor unit power cable (optional)

Electrical power cable, 600 V/1000 V, ZA-RVV, 5 x 6 mm2, black (five core wires), 46 A, outdoor cable, CE

(Optional) Outdoor unit power cable

Naked crimping terminal: OT, 6 mm2, M6, 50 A, tin plating, 128 AWG
Electrical power cable, 600 V/1000 V, ZA-RVV, 3 x 6 mm2, black (three core wires), 46 A, outdoor cable, CE

Naked crimping terminal: OT, 6 mm2, M6, 50 A, tin plating, 128 AWG

(Optional) Signal cable for indoor and outdoor units

Electrical power cable, 300 V, SJTW, 3 x 16 AWG, black (three cores), 10 A, shielded outdoor cable, UL
Naked crimping terminal, single cord end terminal, 1.5 mm2, 16 A, red

Description
The length is determined based on site survey.
The cable should not be lighter than the common PVCsheathed flexible cable (cable 53 in IEC 60227). The length of the cable is determined by the site survey.
Delivered with the device
The cable should not be lighter than the Neoprene armored flexible cable (cable 57 in IEC 60245). The length of the cable is determined by the site survey.
Delivered with the device
The length is determined based on site survey.
Delivered with the device

3.3 Layout Requirements

3.3.1 Indoor Unit Space Requirements

Equipment Room Requirements
To ensure that the environment control system in the smart cooling product room works properly, take moisture-proof and thermal insulation measures.
Ensure that the equipment room provides good heat insulation and has moisture-proof layers. The moisture-proof layer of the ceiling and wall must

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be made of polyethylene film. The paint on the concrete wall and floor must be moisture-proof.
Incoming outdoor air may increase the load of system heating, cooling, humidification, and dehumidification. Therefore, it is recommended that outdoor air be prevented from entering the equipment room. (The incoming outdoor air should be less than 5% of the entire indoor airflow. All doors and windows should be closed and the gap should be minimal.)

Installation Space
To ensure the normal operation of the indoor unit, select a spacious space for installing the indoor unit.
Do not install the indoor unit in a narrow place. Otherwise, the airflow will be blocked, the cooling period will be shortened, the supply and return air will mix up, and air noise will be caused.
Do not place the indoor unit in a concave place or at the end of a long and narrow room.
To facilitate the normal maintenance of the indoor unit, do not install other devices above the indoor unit.

Figure 3-6 Space requirements (side pipe routing)

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Figure 3-7 Space requirements (bottom pipe routing)

3 Installation

3.3.2 Outdoor Unit Space Requirements
Single Outdoor Unit
It is recommended that a single outdoor unit be installed against a wall, as shown in Figure 3-8.
Figure 3-8 Space requirements for installing a single outdoor unit

If the outdoor unit cannot be installed against a wall or the local outdoor temperature may be below 5°C, place an air baffle at the air intake side of the outdoor unit based on Figure 3-9.

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Figure 3-9 Space requirements for installing an air baffle

3 Installation

Install an outdoor unit on a wall, as shown in Figure 3-10. Figure 3-10 Space requirements for installing an outdoor unit on a wall

NOTE
Ensure that the bearing capacity of the support platform is greater than 230 kg. Reserve a clearance of at least 300 mm from the left or right side of the outdoor
fan for maintenance personnel to walk through. The grid structure is recommended to avoid the air exhaust and intake of the
smart cooling product being affected by a guardrail structure. The figures are only for reference, which can be modified based on the actual site
conditions.

Multiple Outdoor Units
When multiple outdoor units need to be installed, if they cannot be installed against a wall or the local outdoor temperature may be below 5°C, place a baffle plate at the air intake side of each outdoor unit.

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Figure 3-11 Space requirements for installing multiple outdoor units

3.4 Layout Principles
The layout principles are as follows:
If the outdoor unit is placed higher than the indoor unit, the maximum height deviation between them should be less than or equal to 20 m. An oil trap should be installed every 5 m to 6 m in the vertical direction along the gas pipe to ensure system reliability.
If the indoor unit is placed higher than the outdoor unit, the maximum height deviation between them should be less than or equal to 5 m.

NOTICE

The height deviation refers to the distance between the stop valve of the indoor unit and that of the outdoor unit.

In the figure,

is a sign of a tilt, indicating that the scale of the pipe tilting

is at least 1:200. The pipe tilting direction should be consistent with the

hypotenuse of the right triangle.

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Figure 3-12 Layout of bottom pipe routing

3 Installation

(1) Oil traps

(2) Tilted gas pipe

3.5 Holes

Figure 3-13 Holes in the bottom plate

(3) Tilted liquid pipe

(1) Humidifier water inlet pipe (2) Liquid pipe hole hole

(4) Power cable hole

(5) Signal cable hole

(3) Gas pipe hole (6) Drainpipe hole

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Figure 3-14 Holes in the side panel

3 Installation

(1) Drainpipe hole

(2) Signal cable hole

(4) Humidifier water inlet pipe (5) Liquid pipe hole hole

(3) Power cable hole (6) Gas pipe hole

Figure 3-15 Dimensions of holes in the side panel (left) and bottom panel (right) (unit: mm)

3.6 Checking the Nitrogen Pressure
Procedure
Step 1 Open the door lock using a key, and open the cabinet front door. Step 2 Remove the air filter.

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Figure 3-16 Removing the air filter

3 Installation

Step 3 Take out the desiccant bags.
Step 4 Check whether any of the needle valve bonnets shown in Figure 3-17 is missing by turns. 1. If any bonnet is missing, contact Huawei technical support. 2. If no bonnet is missing, remove the valve bonnets, and press the valve plugs using the valve bonnets in turn. If nitrogen is exhausted, the system is working properly. If no nitrogen is exhausted, contact Huawei technical support.
Figure 3-17 Positions of the needle valves

(1) Low-pressure needle valve
—-End
3.7 Securing an Indoor Unit

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Procedure
Step 1 Remove the four bolts securing the pallet using an adjustable wrench or socket wrench.

Figure 3-18 Removing bolts that secure the pallet

Step 2 Prepare mounting holes for the base or floor according to the following figure. Figure 3-19 Mounting hole sizes

Step 3 Transport the smart cooling product to the installation position. Step 4 Secure the indoor unit to the base or floor using a torque wrench.

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Figure 3-20 Securing an indoor unit

3 Installation

—-End
3.8 Securing an Outdoor Unit

Prerequisites

The M10 expansion bolts used for securing an outdoor unit have been prepared.
A concrete base has been prepared.

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Context

3 Installation

NOTICE
Move the outdoor unit close to the installation position before unpacking. You are advised to keep the outdoor unit vertical during transportation. If tilt is not avoidable, the tilt angle cannot exceed 15°.
Do not hold the fan guard on the enclosure. Otherwise, it will be deformed. Do not touch the blades with hands or other objects. After installing the outdoor unit, remove the protective cardboard from
condenser fins.
Procedure
Step 1 Determine the four mounting holes of the outdoor unit based on the installation dimensions and drill holes in the concrete groundwork.
Step 2 Align the outdoor unit mounting holes with the holes in the concrete base, and secure the outdoor unit to the concrete base using four M10 expansion bolts, as shown in Figure 3-21.
Figure 3-21 Installing an outdoor unit

—-End

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3.9 Connecting Refrigerant Pipes

Context

Tools: adjustable wrench (250 mm x 30 mm), hex key (5 mm), and torque wrench (17#/19#/27#/30#/36#)

NOTICE
When connecting the indoor and outdoor units, seal the pipes if the welding interval will exceed 15 minutes to prevent dust and water from entering the pipes.
Take protective measures, such as spreading a piece of wet cloth, around the welding position, to avoid burning the bottom panel, top panel, side panel, internal components, other pipes, thermal insulation foam, power cables, and labels.
During and after the welding, avoid exposing the refrigerant pipes for over 15 minutes because this will influence system reliability.
Take appropriate sealing and protective measures when routing welded pipes through holes to prevent air channel leakage and copper pipe damage. Otherwise, other components may be damaged by impurities.
Avoid bends and ensure that the connection between indoor and outdoor units is the shortest.
The refrigerant pipes should be wrapped with thermal insulation foam.
Procedure
Step 1 Weld the refrigerant pipes in the middle.

NOTICE Exercise caution during welding to avoid burning components, such as rubber rings, inside the cabinet. During the welding, fill a little nitrogen into the pipes to avoid internal oxidation, as shown in Figure 3-22.
Figure 3-22 Welding pipes

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NOTE
Ask the site engineering personnel to prepare and install pipe supports. For details about the pipe support requirements, see 3.2.4 Pipe Support.
Step 2 Connect the outdoor unit stop valves.

NOTICE
Connect the liquid pipe stop valve first, and then the gas pipe stop valve. The outdoor unit has been filled with 8 kg R410A refrigerant before delivery.
During welding, do not open the plugs of the outdoor unit stop valves and needle valves. Otherwise, refrigerant will leak.
1. Weld the adapter and the straight section of the engineering pipe outside the cabinet.
2. Remove the pipe nut from the stop valve of the gas pipe and liquid pipe using an adjustable wrench. Check that the PTFE washer on the stop valve and the inner protruding surface of the union connector nut are free of foreign matter and scratches. Clean up impurities using alcohol or a wet cloth. If there is any scratch, contact Huawei technical support for replacement.
3. Keep the adapter nut and the stop valve screw thread on the same center line. Secure the adapter to the stop valve with the other hand and tighten the nut using a torque wrench.

NOTICE
Tighten the liquid pipe stop valve using a 27# torque wrench to a torque of 3537 N·m. Tighten the gas pipe stop valve using a 36# torque wrench to a torque of 5052 N·m.
When tightening a stop valve using a torque wrench, secure the hex nut of the union connector at the welded copper pipe. This is to prevent the copper pipe from turning and deforming as the stop valve is being tightened.

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Figure 3-23 Connecting outdoor unit stop valves

3 Installation

4. Tighten the pipe nuts, needle valve nuts, and rear cover nuts based on the torque listed in Table 3-6.
Figure 3-24 Stop valve

(1) Needle valve nut

(2) Rear cover nut

(3) Pipe nut

NOTICE
Ensure that you tighten the valves to specified torque. The breaking torque for the nut of the liquid pipe stop valve is 70 N·m and that for the nut of the gas pipe stop valve is 100 N·m. The torque greater than the breaking torque will damage the screw thread.

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Table 3-6 Torque requirements

Categor y

Pipe Nut

Needle Valve Nut Rear Cover Nut

Nut Size

Tighteni ng Torque (N·m)

Nut Size

Tighteni ng Torque (N·m)

Nut Size

Tighteni ng Torque (N·m)

Liquid 27#

3537 17#

pipe

stop

valve

19#

1517

Gas pipe 36#

5052 17#

stop

valve

30#

2022

Step 3 Connect pipes to the indoor unit. Side pipe routing: Open the knock-our hole on the side panel, and weld the gas and liquid pipe connectors and the straight section of the engineering pipe outside the cabinet. Open the stop valve nut and tighten the welded pipe to the stop valve using a torque wrench.
Figure 3-25 Side pipe routing

(1) Gas pipe connector

(2) Liquid pipe connector

Bottom pipe routing: Open the rubber hole on the bottom plate, and weld the gas and liquid pipe connectors and adapter pipes (available among the fittings) outside the cabinet. Open the stop valve nut and tighten the nut of the welded pipe assembly to the stop valve. Weld the welded pipe assembly to the engineering pipe in the cabinet.

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Figure 3-26 Bottom pipe routing

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(1) Gas pipe connector (3) Gas pipe adapter
—-End
3.10 Connecting Water Pipes

(2) Liquid pipe connector (4) Liquid pipe adapter

3.10.1 (Optional) Connecting the Humidifier Water Inlet Pipe

Context

This section applies only to models with humidifiers.
The smart cooling product water inlet pipe inside the cabinet can be routed from the bottom or side. Determine the pipe routing mode based on site conditions.
Figure 3-27 shows how to connect a water inlet pipe.

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Figure 3-27 Connecting a water inlet pipe

3 Installation

(1) Internal thread connector: G 1/2 inch

(2) Rigid pipe conversion

(3) Rigid pipe: made of PP-R or

adapter: G 1/2 inch; connected other materials

to a rigid pipe with external

threads

(4) Pagoda conversion adapter: (5) Hose clamp G 1/2 inch; connected to a pipe with external threads

(6) Hose: made of EPDM or other materials

NOTE The object shown in the dotted line box is the reserved port of the smart cooling product. The hose clamp is configured in standard configuration. Other parts are not configured and need to be purchased onsite.
Procedure
Step 1 Pull out the humidifier water inlet pipe from the bottom panel or side panel.
Figure 3-28 Bottom pipe routing

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Figure 3-29 Side pipe routing

3 Installation

NOTICE
The other end is a reserved G 1/2 inch connector with inner threads. Connect the other end to a hose or rigid pipe based on site requirements.

Step 2 Connect the external water inlet pipe and route the pipe inside the cabinet according to the actual conditions.
Step 3 Secure the water pipe to the pipe assembly using cable ties, and seal the cable hole using firestop putty.
—-End
3.10.2 Connecting the Condensate Drainpipe

Context

The smart cooling product condensate drainpipe inside the cabinet can be routed from the top or side. Determine the pipe routing mode based on site conditions.
Figure 3-30 shows how to connect a drainpipe.

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Figure 3-30 Connecting a drainpipe

3 Installation

(1) Drainpipe connector: BSPP 3/4 inch; reserved port

(2) Rigid pipe conversion adapter: BSPT 3/4 inch; connected to a rigid pipe with internal threads

(3) Rigid pipe: made of PP-R or other materials

Procedure
Step 1 Install the rigid pipe conversion adapter on the drainpipe connector. Step 2 Route the external drainpipe into the cabinet through the side plate or bottom
plate and install it on the rigid pipe conversion adapter.
Figure 3-31 Bottom pipe routing

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Figure 3-32 Side pipe routing

3 Installation

CAUTION The drainpipe must have gradients (1:100 is recommended), but no trap is
allowed. The entire drainpipe should be closely wrapped with thermal insulation foam
(thickness 3 mm is recommended).
Step 3 Secure the water pipe to the pipe assembly using cable ties. Step 4 Wrap the drainpipe inside the indoor unit with thermal insulation pipes.
—-End
3.11 Connecting Cables
3.11.1 Cables to be Connected

NOTICE
The connections of all power, control, and ground cables must conform to national and local electrician regulations.
For details about the current in full load, see the NetCol8000-A nameplate. The cable dimensions must comply with the local cabling rules.
Primary power supply requirements: 380415 V, 3phase, 50/60 Hz (see the indoor unit nameplate)
Only trained and qualified personnel are allowed to connect cables. Before connecting cables, use a voltmeter to measure the input voltage and
ensure that the power supply is disconnected.

The following cables are to be connected onsite:

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1. Power cable for the indoor unit 2. (Optional) Signal cables for the indoor unit 3. Power cable for the outdoor unit 4. Signal cable between indoor and outdoor units 5. (Optional) Teamwork and monitoring Cables
3.11.2 Connecting the Power Cable to an Indoor Unit

NOTICE The indoor unit power cable is prepared by the customer. The general power cable of the indoor unit must be reliably secured by a cable
clip.
Figure 3-33 shows the power cable connections for the indoor unit.
Figure 3-33 Connecting the power cable to an indoor unit

3.11.3 (Optional) Connecting the Signal Cable to the Indoor Unit
Figure 3-34 Signal terminals

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Table 3-7 Signal terminal description

Terminal Silk Screen

Name

X1.1 and X1.2

User-defined 1

X1.3 and X1.4

User-defined 2

X1.5 and X1.6

Flame sensor

X1.7 and X1.8

Remote power-on/off

X1.9 and X1.10

Smoke sensor

X2.4 and X2.5

Water leakage sensor

X2.1, X2.2 and X2.3 (required)

Outdoor unit communication

3 Installation
Recommended Cables 2 x 0.75 mm2 2 x 0.75 mm2 2 x 0.75 mm2 2 x 0.75 mm2 2 x 0.75 mm2 2 x 0.75 mm2 3 x 16 AWG

3.11.4 Connecting the Outdoor Unit Power Cable and the Signal Cable Between Indoor and Outdoor Units
Connect the L, N, and GND wires of the outdoor unit to the L, N, and GND terminals of the indoor unit. Connect the P, Q, and E wires of the outdoor unit to the X2.1, X2.2, and X2.3 terminals of the indoor unit.
NOTE
The signal cable between the indoor and outdoor units should be a shielded cable, and the shield layer should be reliably grounded.
Figure 3-35 Connecting the outdoor unit power cable and the signal cable between indoor and outdoor units

3.11.5 (Optional) Connecting Teamwork and Monitoring Cables

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Definition of the Network Cable Pins

Table 3-8 Port pins for teamwork and monitoring

Port

Pin Sequence

Signal Attribute Description

CN16

Pin 1 Pin 2

RTU-RS485-D+ RTU-RS485-D-

Monitoring and communications

Pin 3

GND1

Pin 4

Reserved

Pin 5

Reserved

Pin 6 Pin 7

GND2

Teamwork

communication GROUP-RS485-D+

Pin 8

GROUP-RS485-D-

CN17

Pin 1 Pin 2

RTU-RS485-D+ RTU-RS485-D-

Monitoring and communications

Pin 3

GND1

Pin 4

Reserved

Pin 5

Reserved

Pin 6 Pin 7

GND2

Teamwork

communication GROUP-RS485-D+

Pin 8

GROUP-RS485-D-

NOTE
The network cables must be shielded cables, and the shield layer must be reliably grounded.
Connecting Teamwork Network Cables
The NetCol8000-A013 supports teamwork networking (hand-in-hand). One teamwork network supports a maximum of 32 smart cooling products. After the smart cooling products are powered on, choose Setting > User Menu > Teamwork Setting, and set Enable Teamwork Resistor to Yes for the first and last cooling product controllers.

NOTICE Smart cooling products of different models cannot be networked for teamwork.

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Figure 3-36 Connecting teamwork cables

3 Installation

Connecting Monitoring Network Cables
NetCol8000-A013 supports RS485 monitoring.
If there is no teamwork networking, connect the smart cooling products hand-in-hand and connect the CN17 port on the first smart cooling product to the monitoring device. An 255.
If there is teamwork networking, connect the CN17 port on the first air conditioner in the teamwork group to the monitoring device. An 32.
Considering the monitoring speed, it is recommended that An be less than or equal to 8.
Figure 3-37 Connecting RS485 monitoring cables

3.11.6 Cable Routes
The following figure shows how to route the power cables and the signal cable between the indoor and outdoor units from the bottom.

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Figure 3-38 Cable routes

3 Installation

(1) Port for the signal cable between the indoor and outdoor units

(2) Port for teamwork (3) Port for the indoor (4) Port for the

and monitoring cables unit power cable

outdoor unit power

cable

3.12 Leakage Test with Nitrogen

Context

NOTICE
The leakage test with nitrogen described in this section is dedicated for testing the leaks of the indoor unit and the pipes connected to it.
The measuring range of the pressure gauge must be greater than or equal to 4.0 MPa, and the tolerance range of the rubber hose must be greater than or equal to 4.5 MPa.
During pressure preservation, do not remove the rubber hoses and pressure gauges; otherwise, nitrogen may leak.
Procedure
Step 1 Open the stop valves for the gas pipe and liquid pipe of the indoor unit.

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NOTICE
Before opening the indoor unit stop valves, ensure that the stop valves for the gas pipe and liquid pipe of the outdoor unit are closed.
Step 2 Connect the pressure gauge, rubber hose, and nitrogen cylinder. A reducing valve must be installed on the head of the nitrogen cylinder, as shown in Figure 3-39. The outlet pressure of the reducing valve must not exceed 3.0 MPa.

NOTICE If the outlet pressure of the reducing valve is greater than 3.0 MPa, components may be damaged.
Figure 3-39 Leakage test with nitrogen

(1) Nitrogen cylinder
(4) Needle valve of the gas pipe stop valve

(2) Reducing valve

(3) Pressure gauge

(5) Needle valve of the liquid pipe stop valve

Step 3 Inject 3.0 MPa nitrogen and preserve the pressure for 24 hours. The system pressure should stay constant under unchanging ambient temperature conditions. If there is a considerable temperature change and the pressure changes, perform the test again.
Step 4 If welding defects exist, locate and repair the leak point. If the pressure does not change, exhaust the nitrogen through the injection needle valves.
—-End

3.13 Vacuumizing

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Prerequisites

All pipe connectors are correct, and the refrigerant pipes are titled and supported.
All pipes have been checked for leakage, and all pipes are not bent by a large angle.
The hose clamps and cable ties of the drainpipe are secured. Water pipe joints have been sealed by sealant.
All nitrogen has been exhausted from the indoor unit.
The stop valves for the gas pipe and liquid pipe of the indoor unit are open.
The stop valves for the gas pipe and liquid pipe of the outdoor unit are closed.

Context

Tools: pressure gauge (measuring range 4.0 MPa), rubber hose (withstanding a pressure of at least 4.5 MPa), vacuum pump.

Procedure
Step 1 Connect the pressure gauge and vacuum pump and check that the pressure gauge valves are all open.

Figure 3-40 Vacuumizing

(1) Vacuum pump

(2) Pressure gauge

(3) Needle valve of the (4) Needle valve of the gas pipe stop valve liquid pipe stop valve

Step 2 In the beginning, the vacuum pump makes loud noises and exhausts white smoke from the exhaust vent. After 10 minutes, if it still exhausts white smoke, observe it for another 10 minutes because the cooling system may not be sealed properly or there may be too much water in the cooling system.
Step 3 After 20 minutes, the pressure gauge pointer should be in the negative area and the vacuum pump makes small noises. Close and open the pressure gauge alternatively for several times. The position of the pressure gauge pointer and the noises made by the vacuum pump do not change. Otherwise, the cooling system may not be sealed properly.

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Step 4 Check that the time for vacuumization is 80 minutes or longer after ensuring that the cooling system does not leak, and that the pressure displayed on the vacuum pump is less than or equal to 60 Pa (absolute pressure). When the pressure stops dropping, pump for another 10 minutes.
Step 5 After vacuumization, close all valves of the pressure gauge and the vacuum pump without disconnecting the pump. Preserve the pressure for 10 minutes, and verify that the pressure of the cooling system is not greater than 90 Pa (absolute pressure).
NOTE
If the minimum reading of the pressure gauge is greater than 60 Pa (absolute pressure), ensure that the pointer stays at the smallest scale of the pressure gauge in vacuuming and preserve the pressure for 1 hour. Then check that the pressure does not rise.
Step 6 After ensuring that the pressure does not rise, open the stop valves for the gas pipe and liquid pipe of the outdoor unit.

CAUTION
After the outdoor unit stop valves are opened, the refrigerant in the outdoor unit flows to the engineering pipe and indoor unit pipe. When performing other operations, be careful to prevent refrigerant from spraying out.
After the vacuumization and before removing the rubber hose, ensure that there is positive pressure inside the refrigerant pipes of the indoor unit. For details, see steps 1 to 3 in section “Commissioning Components.”
Step 7 Remove the rubber hose, pressure gauge, and vacuum pump. Step 8 Install needle valve nuts and rear cover nuts for the outdoor and indoor units. Step 9 Wrap thermal insulation foam around the gas pipe stop valve.
Figure 3-41 Wrapping thermal insulation foam for the gas pipe stop valve

(1) Thermal insulation (2) Gas pipe stop valve (3) Liquid pipe stop

foam for stop valves

valve

(4) Cable tie

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Step 10 Wrap thermal insulation foam around the liquid pipe stop valve by referring to Step 9.
—-End

3.14 Verifying the Installation

Table 3-9 Installation checklist

Item

Content

Result

Refrigerant pipe

Pipes are connected to correct ports. The pipeline has oil traps, gradients (for the refrigerant pipes), and pipe supports. Pipes are secured. The pipes are wrapped with thermal insulation foam, and the foam is intact. The needle valve plugs are secured (torque of 0.45±0.05 N·m), and the valve bonnets are tightened. Pipes are not over-bent.

Passed Failed

Water pipe

Water pipe joints are sealed. The drainpipe is properly connected.

Passed Failed

Electrical features

The power cables of the indoor unit and outdoor unit, and signal cables have been connected as required. The indoor and outdoor units are properly grounded. The cables are intact and free of sharp bends. The rated specifications of the upstream switch meet the maximum current requirement.

Passed Failed

Cabinet

The cabinet is installed properly without any tilt. The cabinet is secured by bolts. The foreign matter inside the cabinet such as cable ties and stubs is cleaned up.

Passed Failed

Wet film humidifier

The humidifier water inlet pipe and drainpipe are properly connected, secured, and not leaking. The liquid level detector in the humidifier water tank is secure and flexible.

Passed Failed

Water pan

The water pan is free of foreign matter and its filter is not blocked.

Passed Failed

Air filter

The air filters have been installed.

Passed Failed

Fan

The fan is secured. There is no foreign

Passed Failed

matter inside the fan.

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Item

Content

Result

Outdoor unit

Fan blades work properly. Cables are protected by tubes and the cable outlets face downwards. The protective cardboard for the condenser fins has been removed.

Passed Failed

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4 Power-On Commissioning
4.1 Controller Description

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Figure 4-1 Controller

4 Power-On Commissioning

Table 4-1 Key details

No. Icon

Name

Alarm

query

Function Description
On any screen, press this key to view active alarms.
If alarm sound is generated, press this key to mute the sound until the next different alarm is raised.
If an alarm needs to be cleared manually, press and hold this key for 3 seconds to generate a prompt tone, prompting that it has been eliminated.

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No. Icon 2 3 4
5
6 7

Name Function Description

Startup/ Shutdow n

If the unit is shut down, you can press this key to start it.
If the unit is started, you can press and hold this key for 3 seconds. A shutdown prompt is displayed. Press the enter key, and the unit will be shut down.

Menu-

When the home screen of the unit is displayed, press this key to access the main menu screen.
When a submenu screen of the unit is displayed, press this key to return to the main menu screen.

Back

On a menu screen, press this key to return to the previous menu.
When modifying a parameter, press this key to exit the parameter modification mode and cancel modification.
When the screen for viewing active alarms is displayed, press this key to return to the previous displayed screen.

Enter

On a menu screen, press this key to access the next-level menu screen.
On the bottom-level submenu screen, press this key to make the configurable parameter where the cursor is located enter the modification status.
When modifying a parameter, press this key to complete parameter modification.

On a menu screen, press this key to move the

cursor up.

When modifying a parameter, if the cursor is located at a parameter, press this key to increase the value of the parameter, or press and hold the key for 2 seconds to increase the value of the parameter quickly.

Down

On a menu screen, press this key to move the cursor down.
When modifying a parameter, if the cursor is located at a parameter, press this key to decrease the value of the parameter, or press and hold the key for 2 seconds to decrease the value of the parameter quickly.

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No. Icon 8
9

Name Left
Right

Function Description
On a menu screen, press this key to access the previous screen.
On the screen for entering a password, press this key to move the cursor leftward.
On a menu screen, press this key to access the next screen.
On the screen for entering a password, press this key to move the cursor rightward.

NOTE

If you press and hold the

, and

buttons at the same time

for 5s, a prompt tone is generated, and the password and all parameters are restored to

factory settings. For example, the system configuration and communication configuration

parameters are restored to factory settings, and the user password, the administrator

password, and the maintenance password are also restored to the preset password 000001.

4.2 Device Power-On

Prerequisites

Check that the cables of the indoor and outdoor units are correctly connected and that the input voltage meets requirements.
Ensure that the smart cooling product circuit breaker in the upstream power distribution frame (PDF) is OFF.

Context

NOTICE
Parameters under the administrator menu can be modified only by certified technical personnel. Unauthorized modification may cause the smart cooling product to work abnormally or even be damaged. The involved party shall be liable for any damage caused thereby.
For system security purposes, change the preset password after first login. The preset passwords for the setting and maintenance menus are as follows.

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Table 4-2 Preset passwords

System User

Preset Password

Permission Description

User password

000001

The operator can view parameters and set some parameters.

Administrator password 000001

The operator can set all menus.

Maintenance password 000001

The operator can set all menus.

Note: The administrator password and maintenance password are at the same level, and they can be used interchangeably. You can access the user menu by using the administrator password and maintenance password. The user password can be used only to access the user menu, and cannot be used to access the administrator menu or maintenance menu.

Procedure
Step 1 Turn on the indoor unit switch in the upstream PDF.
NOTICE If the outdoor unit is powered separately, turn on the upstream switches for the indoor and outdoor units at the same time.
Step 2 Open the front door of the indoor unit and turn on the indoor unit switch. The smart cooling product LCD lights up automatically.
Figure 4-2 Display startup

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NOTICE
After the equipment is energized, the crankcase heating belt of the compressor starts to work. Before starting the compressor, ensure that the crankcase heating belt has been preheated for more than 12 hours. Otherwise, the compressor may be damaged, and the involved party shall be liable for any loss caused thereby.
Step 3 After the startup screen disappears, the screen for the initial startup password is automatically displayed.
Figure 4-3 Initial startup screen

Step 4 Obtain the 8-digit startup password for this model through the app based on the model barcode and verification code.
NOTE
Technical support engineers can obtain the startup password through the app. For details, see the Data Center Facility Deployment Guide.
Step 5 Enter the startup password generated by the app in the displayed dialog box to start the smart cooling product.
NOTE
If an incorrect password has been entered, the current screen is still displayed and the screen for normal operations cannot be displayed.
If the correct password has been entered, the screen for normal operations is displayed. The startup password does not need to be obtained through the app again unless a new indoor unit is installed.
Step 6 After the first startup, the LCD displays the home screen.

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Figure 4-4 Home screen

4 Power-On Commissioning

Table 4-3 Icon description

No. Icon

Name

Description

Indoor fan (Current rotational speed of the indoor fan/

rotational Maximum rotational speed) x 100%

speed

percentage

Compresso (Current rotational speed of the indoor fan/

r rotational Maximum rotational speed) x 100%

speed

percentage

Electric

If the electric heater is started, 100% is displayed.

heater

If the electric heater is shut down, 0% is

status

displayed.

Humidifica If the humidifier is started, 100% is displayed. If

tion status the humidifier is shut down, 0% is displayed.

Dehumidifi If the equipment enters the dehumidification

cation

mode, 100% is displayed. If the equipment exits

status

from the dehumidification mode, 0% is displayed.

Lock icon If no password is entered or an incorrect

password is entered, the lock icon exists. If the

correct password is entered (entering the setting

or maintenance menu), the lock icon disappears.

If no operations have been performed during the

LCD backlight time (default: 30 seconds), the

main menu screen is displayed, the display panel

is locked again, and the lock icon appears again.

To access the setting or maintenance menu, you

need to re-enter the correct password.

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No. Icon 7
8 9

Name

Description

Monitoring If the unit is in monitoring mode, this icon exists.

icon

Otherwise, this icon does not exist.

Teamwork If the unit is in teamwork mode, this icon exists.

icon

Otherwise, this icon does not exist.

Alarm icon If an alarm is generated, this icon blinks. Otherwise, this icon does not exist.

—-End
4.3 Setting Temperature and Humidity Values

Procedure

Step 1 Tap

, and choose Setting > User Menu by pressing the

access the screen for entering the password for the user menu.

Figure 4-5 Screen for entering the password for the user menu

key to

Step 2 Enter the password to access the submenu screen.
NOTE If the password is incorrect, the “Wrong Password. Enter Again” message is displayed. If the password is correct, the submenu screen is displayed.
Step 3 Choose Temp&Humid Setting and set Return Air Temp Set and Return Air Humid Set as required.

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NOTE

4 Power-On Commissioning

After selecting the parameters you want to set by

and

then press

to confirm when you are finished.

Figure 4-6 Temperature and humidity setting

, press

to set up, and

Step 4 After the setting is complete, tap —-End

to return to the user menu.

4.4 (Optional) Setting Teamwork Parameters

Procedure
Step 1 Determine the positions of the master unit and slave unit based on the site situation.

Step 2 Choose Teamwork Setting from the user menu, and tap teamwork setting screen.
Figure 4-7 Teamwork settings

to access the

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NOTE
If the teamwork function is enabled and the unit address is set to 1 (master unit), the menus on the last two screens are viewable and configurable. Otherwise, the last two screens are not displayed.
Step 3 Set Teamwork Function to Enable.
Step 4 Set the Unit Address of the master unit to 1 and the Unit Address of the slave unit to an integer other than 1.
Step 5 Set other parameters based on the following table.

Table 4-4 Teamwork settings

Paramete Description r

Setting Rule

Default Value

Teamwork Function

Indicates whether to disable or enable the teamwork function. If the function is disabled, a unit operates independently. If the function is enabled, a unit operates in a team with other units.

Set this parameter based on onsite heat load distribution.

Disable

Unit

Indicates a smart

Set the assigned

—

Address cooling product

smart cooling

address in a

product address.

teamwork control

group. The address

can be set to 1 for

only one unit in

each group, and

must be unique for

all other units in the

group.

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Paramete Description r

Setting Rule

Default Value

Enable

Specifies the build- Set this

—

Teamwork out resistor status of

parameter to No

Resistor each smart cooling

for non-

product in teamwork teamwork

networking.

scenarios.

For teamwork scenarios, set this parameter to Yes for the first and last smart cooling products in a teamwork group, and set it to No for other smart cooling products.

Units in Group

Specifies the number Enter the total

of smart cooling

number of smart

products in a group. cooling products in

The value is an

the group.

integer ranging from

1 to 32.

Active Units in Group

Sets the number of running units in this group. The value is an integer ranging from 1 to the number of units in this group.

Assign the address 1 2 to the master unit, and assign addresses starting from 2 consecutively to all running units in a group. Remaining units will be regarded as standby units.

Rotation Function

Indicates whether to disable or enable the active and standby smart cooling products to work alternatively to maximize their service life.

It is recommended that the function be enabled when the load is even.

Disable

Rotation Type

Can be set to Address or hour.

The default value is Address recommended.

Rotation Cycle

Indicates the interval / between rotations. The value ranges from 1 to 30.

1 day

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Paramete Description r

Setting Rule

Rotation Time

Indicates the time / when rotation takes place. The value can be any hour in a day (023).

High Temp Start All

If this option is enabled, the cooling function is enabled for all smart cooling products in the group when the return air temperature is higher than the Temp for HT Start All.

The default value is recommended.

Temp for HT Start All

The default value is recommended.

Low Temp Start All

If this option is enabled, the heating function is enabled for all smart cooling products in the group when the return air temperature is lower than the Low Temp Start All.

The default value is recommended.

Temp for LT Start All

The default value is recommended.

Default Value 00:00 Disable
31°C Disable
13°C

Step 6 After the setting is complete, tap —-End

to return to the user menu.

4.5 (Optional) Setting Monitoring Parameters

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Procedure

4 Power-On Commissioning

Step 1 Choose Comm Setting from the user menu, and tap communication setting screen.
Figure 4-8 Communication settings

to access the

Step 2 Set the Baud Rate, Comm Address, and Enable Monitoring Resistor based on the actual situation.

Table 4-5 Communication settings

Parameter

Description

Default Value

Baud Rate

Set the baud rate as required. The value should be consistent with that set on the NMS.

9600

Comm Address

The communications

address in one RS485

NMS must be unique,

which is irrelevant to the

cable connection

sequence or teamwork

address.

Enable Monitoring Resistor

In an NMS, the values

for the first and last

smart cooling products

by cable routing are

“Yes”.

—-End
4.6 Component Commissioning

Context

Remove the refrigerant cylinder after ensuring that no more refrigerant needs to be charged.

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If the air conditioner is not configured with a heater or humidifier, skip the commissioning steps related to the electric heater and humidifier.

NOTICE
Before delivery, the outdoor unit has been filled with 8 kg R410A refrigerant, and the indoor unit has not been filled with refrigerant.
If the R410A refrigerant is provided by Huawei, put the refrigerant cylinder upside down when charging the refrigerant. If the refrigerant is not provided by Huawei, check with the refrigerant provider whether the cylinder has a siphon. If the cylinder has a siphon, stand the cylinder when charging refrigerant. If not, put the cylinder upside down when charging refrigerant. These measures ensure that the refrigerant is charged in the liquid state.
Procedure

Step 1 Tap

to start the smart cooling product.

NOTE

If the startup confirmation screen is displayed, enter the password to complete the startup.

Step 2 Tap

and choose Maintain > Diagnostic Mode.

Step 3 Set EEV Opening to 300step, set Liquid Solenoid Valve to ON, and keep that for 30s to allow for the positive pressure inside the refrigerant pipe of the indoor unit.

Step 4 Change the input of the outdoor fan to 100%. After checking that the outdoor fan runs properly and no alarm is generated, change the input of outdoor fan to 0%.

Step 5 Change the input of the indoor fan to 100% and tap ON for the electric heater.
1. Check that the indoor fan is running properly and no alarm is generated.
2. If hot air blows out from the air exhaust vent of the fan after a period, the electric heater runs properly. In this case, tap OFF for the electric heater and change the input of the indoor fan to 0%.

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Step 6 Adjust the compressor rotational speed to 3000 rpm.
1. Determine whether refrigerant needs to be filled based on the total one-way pipe length. If refrigerant needs to be filled, fill it from the low-pressure needle valve on the cooling pipe. Ensure that the refrigerant is filled in small amount or filled now and then if possible. The total amount of filled refrigerant must meet the following requirements.

Table 4-6 Refrigerant to be charged Total One-Way Pipe Length (L) 30 m 30 m < L 60 m

Refrigerant to Be Charged No additional refrigerant is required. (L 30) x 0.05

Figure 4-9 Adding refrigerant

(1) Electronic balance (2) Refrigerant cylinder

(3) Pressure gauge (4) Low-pressure needle valve

2. After the compressor speed stabilizes at 3000 rmp for about 10 minutes, choose Run > Device Run State to view the Suction Pressure, Discharge Pressure, EEV Suct Superheat, and Supercool. Check whether the suction pressure, discharge pressure, EEV suction superheat degree, and supercool degree are within their normal ranges.

Table 4-7 Running parameters

Outdoor Ambient Temperatur e

Normal Discharge Pressure Range

Normal Suction Pressure Range

< 15°C

1.52.5 MPa 0.71.2 MPa

1535°C

1.53.1 MPa

Normal Suction Superheat Degree
410°C

Normal Supercool Degree
35°C

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Outdoor Ambient Temperatur e
3545°C
> 45°C

Normal Discharge Pressure Range
2.53.8 MPa
3.14.15 MPa

Normal Suction Pressure Range

4 Power-On Commissioning

Normal Suction Superheat Degree

Normal Supercool Degree

3. On the Diagnostic Mode screen, change the compressor input to 0 rpm.
Step 7 Commission the humidifier. 1. Check that the upstream water inlet valve of the wet film humidifier is open. 2. In diagnostic mode, open the wet film humidifier. 3. The water inlet valve automatically opens and fills water into the humidifier water tank. When the water level reaches the specified threshold, the water inlet valve closes automatically and the humidifier water pump starts. During the process, ensure that the water inlet pipe does not leak. 4. In diagnostic mode, close the wet film humidifier.
Step 8 After the commissioning is complete, remove the device used for charging refrigerant, and install the needle valve bonnet.
Step 9 Exit the diagnostic mode.
—-End
4.7 Checking After Commissioning

Table 4-8 Commissioning checklist

Item

Result

The thermal insulation foam of the copper pipes and the bottom plate are free of oil stains and are clean.

Passed Failed

The needle valve plug is secured (torque of 0.45±0.05 N·m), and the valve bonnet is tightened.

Passed Failed

The foreign matter on the water pan and bottom plate is cleaned up.

Passed Failed

The air filters have been installed.

Passed Failed

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5 System Operation and Maintenance

This chapter describes the NetCol8000-A in-room air cooled smart cooling product in terms of system operation and maintenance, including safety precautions, routine maintenance, alarm reference, troubleshooting, and component replacement.

5.1 Routine Maintenance

5.1.1 Routine Maintenance Overview

Definition

Routine maintenance refers to preventive and periodic check and maintenance carried out to promptly identify and handle alarms and potential faults during the normal operation of the equipment.

Routine Maintenance Precautions
Routine maintenance is critical to the normal operation of a device. Perform routine maintenance regularly. Read all the precautions and product documentation before performing maintenance.
Follow local laws and safety instructions to minimize the risk of personal injury and damage to devices.
The “NOTICE”, “CAUTION”, “WARNING”, and “DANGER” statements in this document do not represent all the safety instructions. They are only supplements to the safety instructions.
Personnel who plan to install, operate, or maintain Huawei devices need to receive a thorough training, understand all necessary safety precautions, and be able to correctly perform all operations.
During operation, comply with the safety symbols on the device and all the safety instructions in this document. The safety precautions provided in this document do not cover all the safety precautions. Huawei shall not be liable for any consequence caused by the violation of the safety operation regulations and design, production, and usage standards.

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Most maintenance tasks need to be performed with power off. Do not connect the power supply during maintenance. If you need to perform maintenance tasks such as measuring the current, voltage, and temperature when the device is operating, connect the power supply only after you have connected all cables. Disconnect the power supply when you finish maintenance.
Protective measures, such as wearing insulation gloves or shoes, must be taken during electrical maintenance.
Exercise caution during professional maintenance. For details, contact Huawei technical support.
When replacing a component, do not lean the component against the cabinet.
5.1.2 Preventive Maintenance Tables

Monthly Preventive Maintenance Table

Table 5-1 Monthly preventive maintenance table

Item

Check Criteria

Troubleshooting

Return air filter

Check that the return air filter is clean and not blocked.

Clean the air filter with water (recommended).

Check that the return air filter is not Replace the filter if it is damaged. damaged or misshapen.

Wet film humidifier

The valve on the water inlet pipe is open.

Open the valve of the water inlet pipe.

Check that the water pan filter is clean and not blocked.

Clean it with water.

Check that the humidifier float has no scale.

Clean up the scale from the humidifier float.

Check that the wet film has no scale. If there is much water scale, replace the wet film humidifier.

Check that no operating overtime alarm is generated for the humidifier.

Replace the wet film humidifier.

Refrigerant pipe and Check that the refrigerant pipes are Check for leakage and repair the

water pipe

free of oil stains and rust.

pipe.

Check that the water pipe is

Check for leakage and repair the

tightened and free of water leakage. pipe, or reconnect the pipe.

Check that the thermal insulation foam is intact.

Wrap the thermal insulation foam again.

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Quarterly preventive maintenance table

Table 5-2 Quarterly preventive maintenance table (on the basis of monthly preventive maintenance)

Item

Check Criteria

Troubleshooting

Indoor fan

Check that the operating indoor fan Replace the fan assembly. generates no abnormal noise.

Check that the screws on the indoor Tighten loose screws. fan are not loose or distorted.

Compressor

Check that the compressor is secured properly.

Tighten screws if the compressor is not secured.

Check that the operating compressor Replace the compressor. generates no abnormal noise.

Electric heater

Check that the electric heater is secured.

Secure the electric heater.

Check that the electric heater surfaces are not eroded.

Replace the electric heater.

Outdoor fan

Check that the fan air intake and exhaust vents are not blocked.

Clear obstacles.

Check that the fan runs properly

Replace the outdoor fan.

without abnormal noise or vibration,

and the blades rotate properly.

Yearly Preventive Maintenance Table

Table 5-3 Yearly preventive maintenance table (on the basis of quarterly preventive maintenance)

Item

Check Criteria

Troubleshooting

Monitoring

Export smart cooling product logs, alarms, temperature and humidity data, and the operating status and time of the compressor, fan, electric heater, wet film humidifier, and water pump. View the historical alarms generated this year and select the most common five ones.

Rectify the fault or contact Huawei technical support.

Electric control box components

Check that the electrical components and control components of the indoor unit are free of dust.

(Perform the operation with the power off.) Use a brush or compressed dry air to remove dust from electrical components, control components.

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Item
Cable Outdoor unit

Check Criteria

Troubleshooting

Check that the electrical components and control components of the outdoor unit are free of dust.

Check that the surfaces of the control board are not aged.

Replace faulty boards.

Check that the electric heating contactor works properly.

Replace the electric heater contactor.

Check that no cable is aged.

Replace aged cables.

Check that the outdoor unit is secured to the ground.

Tighten the screws that secure the rack to the ground.

5.2 Troubleshooting

CAUTION
Do not maintain or replace the outdoor unit during thunderstorms. Otherwise, your personal safety will be in danger.

NOTICE
You are not advised to maintain or replace the outdoor unit in rainy days. If unavoidable, take protective measures to prevent water from entering the outdoor unit.
When opening the electric control box cover, clear water from the cover.
Certain circuits in the equipment have lethal voltages. Only professional technicians are allowed to perform maintenance.
Exercise caution during troubleshooting with power on.
If jumpers are used for troubleshooting, always remove them after troubleshooting. Connected jumpers may affect control functions and damage equipment.

Table 5-4 Troubleshooting

Cate Sympto Possible Cause gory m

Solution

Indo or unit

The indoor unit fails to start.

The indoor fan is damaged. Replace the indoor fan.
The indoor fan drive board Replace the indoor fan drive board. is damaged.

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Cate Sympto Possible Cause gory m

Solution

The heating function fails.

The electric heater temperature switch is protected.

Check the temperature switch. If it is protected due to high temperature, it can automatically recover after the temperature drops.
If the protection fuse has blown, replace the electric heater.

The electric heater contactor is not closed.

Check the electric heater contactor status. Replace the contactor if necessary.

The electric heater is damaged.

Replace the electric heater.

The humidific ation function fails.

The water inlet solenoid valve fails.
The humidifier pump is faulty.
The wet film humidifier is faulty.
The wet film humidifier leaks or water fails to come into it.
The wet film humidifier has exceeded the maximum operating time.

Replace the water inlet solenoid valve. Replace the humidifier pump. Replace the wet film humidifier.

Water supply fails.

Check and maintain the water supply source and pipe.

Water overflows .

The drainpipe is not connected or the drainpipe does not meet the gradient requirements.

Ensure that the drainpipe is connected and the drainpipe gradient meets the requirements.

The water inlet pipe or drainpipe leaks.

Check the water inlet pipe and drainpipe and their connectors. Repair or replace them if necessary.

The humidity of the equipme nt room is high, or condensa te water is

Compared with a single smart cooling product, the heat load of the equipment room is too small.

Check that the doors, windows, floors, and ceilings of the equipment room are properly sealed.
If the outdoor humidity is too high, shut down the fresh air system.

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Cate Sympto Possible Cause gory m

Solution

generate d.

Add dehumidifiers.

Out door unit

The unit generates abnormal voice.

The compressor, fan, or pipes are loose.

Check and secure loose parts.

The compress or does not work.

The high and low pressure switches are triggered.
The switch or cable is disconnected.

Check the high and low pressure switches. Check the switch and cables.

The compressor is damaged.

Replace the compressor.

A compressor does not need to be started.

Check the temperature and humidity settings and adjust them to proper values.

The main board or drive board of the outdoor unit is damaged.

Replace the main board or drive of the outdoor unit.

The compress or discharge temperat ure is too high.

The outdoor units are not installed in right positions. (The installation distances should meet requirements.)

Install outdoor units in the right positions based on the installation requirements.

Air enters the compressor.

Check the discharge temperature and pressure. Drain and retrieve refrigerant. Recharge refrigerant.

Heat dissipation is poor because the condenser is dirty or blocked.

Clean the condenser fins using a fin brush.

The outdoor fan fails.

Check whether the outdoor fan works properly.

Refrigerant is insufficient. Charge more refrigerant.

The compress or discharge pressure is too low.

Refrigerant is insufficient.
The outdoor fan speed controller fails.
Refrigerant leaks.

Charge more refrigerant.
Replace the fan speed controller.
Apply soapy water or use a halogen leak detector to check for any leakage. If leaking points are found, retrieve the refrigerant and weld the leaking points again. Contact Huawei technical support.

The outdoor temperature is No action is required. too low.

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Cate Sympto Possible Cause gory m

Solution

The compress or suction pressure is too low.

The refrigerant is insufficient.
Refrigerant leaks.

Charge more refrigerant.
Apply soapy water or use a halogen leak detector to check for any leakage. If leaking points are found, retrieve the refrigerant and weld the leaking points again. Contact Huawei technical support.

The condensing pressure is too low.

Check whether the outdoor temperature is too low and whether the outdoor fan is under control.

Liquid is returning to the compress or.

The indoor temperature is too low.
The air filter is dirty or blocked.
The EEV coil is faulty.

Change the temperature setting. Replace the filter. Replace the EEV coil.

The refrigerant is overfilled. Decrease a certain amount of refrigerant.

The compress or generates too much noise. (It is common that the compress or generates much noise when it shuts down.)

Liquid is returning to the compressor.
Refrigerant oil is insufficient.

Check whether the suction superheat degree of the EEV is within the normal range (410°C).
Add refrigerant oil.

5.3 Alarm Reference

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5 System Operation and Maintenance

NOTICE After the fault is rectified, some alarms need to be manually cleared. After you

press and hold down

for 3 seconds, a prompt tone is generated, indicating

that the

References

Huawei Enterprise: New Value Together

Huawei Netcol8000 A013 In Room Air Cooled Smart Cooling Product User Manual

NetCol8000 A013 In Room Air Cooled Smart Cooling Product

Product Information: NetCol8000-A013 In-room Air Cooled Smart
Cooling Product User Manual (800 mm Width)

Symbol Conventions

Change History

Product Usage Instructions

References

Documents / Resouces

Related Manuals

NetCol8000 A013 In Room Air Cooled Smart Cooling Product

Product Information: NetCol8000-A013 In-room Air Cooled SmartCooling Product User Manual (800 mm Width)

Symbol Conventions

Change History

Product Usage Instructions

References

Documents / Resouces

Related Manuals

Product Information: NetCol8000-A013 In-room Air Cooled Smart
Cooling Product User Manual (800 mm Width)