INVT VCS Series User manual

www.invt-power.com
Overseas Department
Stock Code：002334
2021.4_Ver.C
I
VCS Series Rack Air Conditioner User Manual

Preface
VcolSer Rack Air Conditioner
II
Preface-About the product and manual
[Manual purpose]
This manual introduces the main features, performance, and working principle
of the new generation of intelligent rack-mounted precision air conditioners and
provides users with information on usage, operation, and maintenance.
[User]
Technical Support Engineer
Maintenance Engineer
[Disclaimer]
1. Outside the free warranty period;
2. Disassemble or modify the product without authorization;
3. Violation of product operation or use specifications;
4. Man-made faults;
5. The product suffered losses caused by irresistible or other external factors on
the client-side.
[Note:Any of the above exemption clauses will not be covered by the warranty.]
[Related description]
1. This manual is provided with the product, please keep it in a safe place so that
you can check it at any time when you need it. In case this manual is
accidentally lost or damaged, please obtain it directly from the manufacturer
or local distributor;
2. This manual is written for VCS series air-cooled products, and the content
may not be applicable to other models;
3. Due to product version upgrades or other reasons, the content of this
document will be updated from time to time.
Unless otherwise agreed, this document is only used as a guide, and all reports,
information, and suggestions in this document do not constitute any express or
implied guarantee.
4. The copyright of this manual belongs to Shenzhen INVT Network Technology
Co., Ltd., and all rights are reserved. The content is subject to change without
notice.

CONTENTS
VcolSer Rack Air Conditioner
III
CONTENTS
Preface-About the product and manual.........................................................................................II
Chapter 1 General ..........................................................................................................................1
1.1 Products Introduction...........................................................................................................1
1.2 Operating Parameters and Requirements.............................................................................2
1.3 Type Description..................................................................................................................2
1.4 System Composition ............................................................................................................2
1.5 Product Specification ...........................................................................................................3
1.5.1 Dimensions and Net Weight..........................................................................................3
1.5.2 External Structure..........................................................................................................3
Chapter 2 Receiving.......................................................................................................................5
2.1 Transportation ......................................................................................................................5
2.2 Receiving..............................................................................................................................5
2.2.1 Receiving Process Suggestions .....................................................................................5
2.2.2 External Checking .........................................................................................................6
2.2.3 Unboxing.......................................................................................................................7
2.2.4 Internal Checking ..........................................................................................................7
2.2.5 Storage...........................................................................................................................8
Chapter 3 Installation.....................................................................................................................9
3.1 Installation Site.....................................................................................................................9
3.2 Installation Form..................................................................................................................9
3.3 Mechanical Installation......................................................................................................10
3.3.1 Install Indoor Machine.................................................................................................10
3.3.2 Install Outdoor Machine..............................................................................................11
3.3.3 Connecting Tube..........................................................................................................12
3.4 Electrical Installation..........................................................................................................16
3.4.1 Operating the Project...................................................................................................16
3.4.2 Matters Needing Attention ..........................................................................................16

CONTENTS
VcolSer Rack Air Conditioner
IV
3.4.3 Detection......................................................................................................................17
3.4.4 Graphical Representation ............................................................................................17
Chapter 4 Controller ....................................................................................................................18
4.1 Features ..............................................................................................................................18
4.2 Display (when optional).....................................................................................................18
4.3 Control Key........................................................................................................................19
4.4 Switch Operation................................................................................................................19
4.5 Status Query.......................................................................................................................20
4.6 User Settings ......................................................................................................................20
Chapter 5 Inspection and Debugging...........................................................................................23
5.1 Inspection...........................................................................................................................23
5.2 Nitrogen to Maintain Pressure............................................................................................23
5.3 Refrigerant Charging..........................................................................................................24
5.4 Lubricating Oil Supplement...............................................................................................25
5.5 Function Test......................................................................................................................25
5.6 System Debugging .............................................................................................................25
Chapter 6 Maintenance and Troubleshooting..............................................................................26
6.1 Daily Maintenance .............................................................................................................26
6.2 Common Troubleshooting .................................................................................................27
Annex ⅠElectrical Schematic Diagram of the Indoor Unit.....................................................30
Annex ⅡElectrical Schematic Diagram of the Outdoor Unit ..................................................31

Chapter 1 General
VcolSer Rack Air Conditioner
1
Chapter 1 General
Summary--This chapter mainly describes five aspects including product introduction, operating
parameters and requirements, type description, system composition, and product specifications.
1.1 Products Introduction
Products
The VCS series Rack Air Conditioner is a product highly suitable for the application scenarios
of micro-module products. It is embedded in a standard cabinet to achieve near-end cooling and
reduce the PUE value of the data center. It has the characteristics of high efficiency and energy
saving, easy installation, high integration, flexible combination, safety, and reliability.
Types
This product is divided into a variety of models with heating and humidification and without
heating and humidification. The main functions of the humidifier with heating are: refrigeration,
dehumidification, humidification, and heating; the humidifier without heating has only the cooling
and dehumidification functions.
Refrigerating capacity
The refrigeration levels of VCS series rack air conditioners are:3.5kW～12.5kW.
Features
1. High reliability, high sensible heat ratio, large air volume;
2. High-efficiency backward-inclined centrifugal EC fan design, with large air volume, high
efficiency, and low noise;
3. The well-designed and matched refrigeration system ensures optimal energy-saving
operation all-weather;
4. The rack-mounted design concept makes the layout application more flexible and exquisite;
5. Adopt R410A green environmental protection refrigerant, in line with international
environmental protection refrigerant requirements;
6. Adopt a large-area "V"-shaped evaporator design to make heat exchange faster and more
efficient;
7. The electronic expansion valve is used to accurately control the refrigerant flow, which can
save up to 30% of energy consumption;
8. Adopt international famous brand DC inverter compressor, its excellent quality guarantees
the unit's high efficiency and stability;
9. The use of high-quality refrigeration valves makes the operation more reliable;

Chapter 1 General
VcolSer Rack Air Conditioner
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10. A variety of optional accessories, to provide users with a variety of options.
1.2 Operating Parameters and Requirements
Table 1-1 Operating parameters and requirements table
--
Item
Indoor
Outdoor
Operating Parameters
Temperature/T
0℃～45℃
-40℃～+45℃
Humidity /RH
5%～95%
——
Operating
Requirements
Altitude/M
Altitude <1000M, more than 1000M need to be derated
Power supply /V
220V±10%, 50±2Hz
1.3 Type Description
E.g.：Type——VCS003AH**
Figure 1-1 Naming rules for indoor units
Figure 1-2 Naming rules for outdoor units
1.4 System Composition
VCS series rack air conditioners are mainly composed of refrigeration system, control system,
ventilation system, humidification system, and heating system. The unit is mainly composed of the
following components:
1. Compressor. Using high-efficiency DC inverter compressor, matched with R410A
refrigerant, environmental protection and pollution-free;
2. Evaporator. Large area "V" or "/" type evaporator design, which makes heat exchange
faster and more efficient;
3. Expansion valve. Electronic expansion valve, wide adjustment range, precise flow
Air-cooled
Type
Front air supply
VCS Series Rack Air Conditioner
VCS
A
003
VCS
Single
Type
Formal type
Condenser
VCP
S
005
F
VCP
H
003
A
H
005
S
F
**
**
Internal code

Chapter 1 General
VcolSer Rack Air Conditioner
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adjustment, high reliability of operation;
4. Heater. PTC heater, with fast heating speed and even heat;
5. Wet film humidification components (when optional). Adopt wet film evaporative
cooling technology, environmental protection, and energy-saving, low maintenance cost;
6. Filter drier. Protect the refrigeration system, make the system free of moisture, acid, and
solid impurities;
7. Compressor heating belt. Used to heat the oil sump of the compressor crankcase. The
heating belt must be energized for at least 12 hours before starting;
8. EC fan. To achieve step-less speed regulation of wind speed, wide adjustment range;
9. Air filter. Filter dust and impurities in the air to ensure the cleanliness of the environment;
10. Controller. Standard RS485 communication interface, support remote centralized control,
call self-start, password protection, timing on/off, etc.;
1.5 Product Specification
1.5.1 Dimensions and Net Weight
Table 1- 2 Dimensions and net weight
Product
Type
Dimension (mm)W×H×D
Net Weight (kg)
Indoor unit
VCS003AH**
442×220×8 00
26
Outdoor unit
VCP005SF
840×606×340
38
1.5.2 External Structure
The appearance and structure of the indoor unit and outdoor unit：
（Side view）（Front view）
Figure1- 1 VCS003AH

Chapter 1 General
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（Top view）（Front view）
Figure 1- 2 VCP005S

Chapter 2 Receiving
VcolSer Rack Air Conditioner
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Chapter 2 Receiving
Summary--This chapter mainly introduces the process and related precautions in the process of
product transportation and reception.
2.1 Transportation
Special Note
The VCS series Rack air conditioners contain mechanical, electrical and other equipment.
Improper transportation and handling may cause damage to the product and cause the equipment to
fail to operate normally. Please ensure the safety and quality of the product during transportation and
handling.
Precautions
Precautions related to transportation and handling:
1. Please try to choose a better transportation method (such as railway transportation,
shipping). When choosing automobile transportation, you should choose a road with better
road conditions to prevent excessive bumps;
2. The transportation environment and placement requirements should be implemented in
accordance with relevant requirements;
3. Please try to use mechanical handling tools when unloading and transporting;
4. Anti-collision, anti-drenching, etc.
Table 2- 1 Packaging dimensions and gross weight of VCS precision air conditioners
Type
Packaging Dimensions
(mm)W×D×H
Gross Weight(kg)
VCS003AH**
650×450×1050
32
VCP005SF
870×960×550
43
2.2 Receiving
Special Note
VCS series Rack Air Conditioners have passed strict quality assurance tests and inspections
before leaving the factory. Please check the equipment carefully when receiving the products to
ensure that the equipment has not been damaged during transportation.
2.2.1 Receiving Process Suggestions
In view of the fact that after the product arrives, users have two situations: immediate
installation and temporary non-installation. In order to provide users with a better receiving plan, the

Chapter 2 Receiving
VcolSer Rack Air Conditioner
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following simulated receiving process is given for users' reference; please choose the best plan
according to the specific situation.
Flow Chart
The following figure 2-1 is a schematic diagram of the simulation of the receiving process, and
the specific content of each step is shown in this section.
Figure 2- 1 Schematic diagram of receiving process simulation
The figure shows the receiving process under two conditions, namely, condition Aand condition B:
A——Instant installation；
B——Delayed installation;
①——Arriving；
②——External Checking；
③——Carrying；
④——Unboxing；
⑤——Internal Checking；
⑥——Acceptance；
A：⑦——End Receiving.
B：⑦——Sealing；⑧——Storage；⑨——End Receiving.
2.2.2 External Checking
Transportation Checking
After arrival, check whether the transportation meets the transportation requirements.
Transportation requirements:
1. Keep out of the rain;
2. Place it upright;