AC MGA0800/A1 User manual

Air Conditioner User Manual
MODEL: MGA0800/A1
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●Before using the product, please be sure to read the
manual carefully
●Be sure to keep this manual properly so that you can
access it at any time in the future.
●On the basis of fully understanding the content,
please use it correctly.

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CONTENT
1. Introduction ................................................................................................................3
1.1 Preface........................................................................................................................................... 3
1.2 Product introduction.......................................................................................................................3
1.3 Standards.......................................................................................................................................4
2Product parameter .....................................................................................................4
2.1 Product technology parameters.....................................................................................................4
2.2 Installation diagram........................................................................................................................5
3Preparation and installation ......................................................................................6
3.1 Removing package and checking .................................................................................................6
3.2 Mechanical installation................................................................................................................... 6
3.3 Electrical installation ......................................................................................................................7
4Product function ........................................................................................................8
4.1 Cooling........................................................................................................................................... 8
4.2 Heating（Optional）......................................................................................................................8
4.3 Remote monitor .............................................................................................................................8
4.4 The control of external fan (Optional)............................................................................................8
5Display screen............................................................................................................9
5.1 Display interface ............................................................................................................................ 9
5.2 Menu structures ........................................................................................................................... 10
5.3 Display ..........................................................................................................................................11
5.4 Start self-test.................................................................................................................................11
6Running..................................................................................................................... 11
6.1 Check before start running ...........................................................................................................11
6.2 Start running ................................................................................................................................12
7Faults and treatment................................................................................................12
7.1 Alarm information......................................................................................................................... 12
7.2 Faults and treatment.................................................................................................................... 13

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8Maintenance .............................................................................................................14

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1. Introduction
1.1 Preface
This manual introduces the guide for the installation, operation, function and routine maintenance of
the cabinet air conditioner. Please read carefully the manual before using and follow the usage and note.
Note: All the operations of this product shall be performed by professional engineers.
1.2 Product introduction
The air conditioner is one kind of refrigeration product self-developed for cabinet. It is applicable in
the place where the cabinet internal heat is very large, the internal electronic equipment is sensitive to the
environment temperature and which should be isolated internally and externally completely. This product
has multiple functions, high reliability, and has the feature that it can start to work without complex
debugging after powering.
The fan in the internal cycle air path absorbs the hot air from the upside to make air heat exchange
by evaporator fins, and sends the cooled air from the downside of the air conditioner. By so, the air in
cabinet can cycle to achieve the purpose of lowering the temperature. Meanwhile, The fan in the external
cycle air path absorbs the external cold air from the downside, and discharges the hot air from the upside
after heat exchange.
Outer cycling
air outlet
Outer cycling
air outlet
CABINET
Cool air
outlet
Warm air
inlet
Air conditioner

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1.3 Standards
NO.
Standard No.
Standard Name
01
GB 4208
Enclosure Protection Class
02
GB/T 4857.5、9、10、11、16
Packaging-Basic tests for transport packages
03
GB/T 2423.1、2、3、8、10、17、38
Electrical and electronic products environmental test
04
GB9254-1998
Information technology equipment-Radio disturbance
characteristics-Limits and methods of measurement
05
GJB150-86
Environmental test methods for military equipments
06
GB/T17626.8
Electromagnetic compatibility-Testing and measurement
techniques--Power frequency magnetic field immunity test
07
YD/T 2768-2014
The temperature controlling devices for Communication
outdoor room 1st parts: Embedded temperature controlling
devices
08
EN 55022:2006+A1:2007
Conducted Emission and radiation test
09
EN 61000-3-2:2006+A2:2009
Harmonic Current
10
EN 61000-3-3:2008
Voltage Fluctuation and Flicker
11
EN 61000-4-2:2009
ESD
12
EN 61000-4-3:2006
Radiation disturbance Immunity Test
13
EN 61000-4-4:2004
Electrical Fast Transient Burst
14
EN 61000-4-5:2006
Surge
15
EN 61000-4-6:2009
Conduction disturbance Immunity Test
16
EN 61000-4-11:2004
Voltage dips and short interruptions
2Product parameter
2.1 Product technology parameters
Item
Name
Unit
Parameter
Dimension and
installation
Body outline dimension
(width*height*depth )
mm
600*450*185
Outline dimension including
flange(width*height*depth )
mm
638*450*185
Weight
Kg
19.5

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Installation method
Door Mounted
Installation method
Outdoor
Environment
and protection
Working environment temperature
℃
-40 to +55
Noise
dB(A)
60
Life expectancy
Years
>10
IP grade
IP55
Refrigerant
R134a
ROHS certification
yes
Performance
Input voltage range
220 VAC±15% ～/50Hz
Refrigerating capacity(L35/L35)
W
800
Rated Refrigerating input
power(L35/L35)
W
385
Rated Refrigerating current (L35/L35)
A
1.8
Maximum Refrigerating current
A
2.6
Heat capacity(optional)
W
500
Air Volume of Inner Circulation
m3/h
240
2.2 Installation diagram
Note: the installation diagram is just for reference, the specific installation scheme should be
determined according to the environment of the actual usage.

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3Preparation and installation
3.1 Removing package and checking
1. Please prepare installation tools: knife and scissors, and wear protective gloves.
2. Please remove wrapping film and packing belt, then remove the carton, take out the air
conditioner.
3. Please check the attachment list and accessory bags in the carton, check whether the air
conditioner model is right .
Notes:
1. After removing the outer package, please make sure that the air conditioner is placed
upright , and not placed horizontally or upside down.
2. After removing the outer package, please check carefully whether the appearance of the air
conditioner is damaged or oil polluted, if the appearance of the air conditioner has obvious
deformation or oil stain, please contact the manufacturer in time.
3. If there is no need to install the product immediately or it needs to be transported to other
place, please repack the air conditioner after the checking.
4. It is recommended to recycle the unpacking materials.
3.2 Mechanical installation
Installation tool: Phillips screwdriver
Installation Steps：
1) Choose cut location on the cabinet according to the holing diagram, remove the shadow
area and make the installation hole.
2) Make air conditioner flange close to cabinet door, Fix the air conditioner on the installation
surface of the cabinet firmly with M5 screws.
3) Check whether air conditioner is installed levelly and firmly.
Notes:
1) Check whether air conditioner drainage loop is smooth, in case that drainage is blocked.
2) When determine the location of the installation hole in the cabinet, you should avoid the inlet
and outlet air ports inside the cabinet are not blocked by any components inside the cabinet, and
the two should be kept a horizontal distance of more than 150mm; otherwise, it is prone to lead

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to r short circuit of the return air, and poor cooling effect, etc.;
3) carrying or moving the air conditioner should be careful to avoid colliding it and scratching
its surface coating;
3.3 Electrical installation
（1）Power input port
Item
Port
Definition
Live
L
power input cable L
Null
N
power input cable N
Earth
PE
Earth line
（2）Alarm output and signal input port
Item
Port
Definition
+ RS485 communication interface
RS485A
RS485 communication ports (+)
- RS485 communication interface
RS485B
RS485 communication ports (-)
The public alarm dry nod (NO)
NO
It is normally open if no alarm
The public alarm dry nod (COM)
COM
common port
The public alarm dry nod (NC)
NC
It is normally close if no alarm

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4Product function
4.1 Cooling
When the temperature inside cabinet is higher than refrigeration starting temperature, it starts
refrigerating; when the temperature inside cabinet is lower than refrigeration stopping temperature, it
stops refrigerating. User parameter setting point
Parameter
Default value
Setting range
Unit
Note
Refrigeration starting
temperature
35
[20～40]
℃
Refrigeration stopping
temperature =Refrigeration
starting temperature-
Refrigeration return
difference
Refrigeration return
difference
6
[3～10]
℃
4.2 Heating（Optional）
When the temperature inside cabinet is lower than heating starting temperature, it starts heating;
when the temperature inside cabinet is higher than heating stopping temperature, it stops heating.
User parameter setting point
Parameter
Default value
Setting range
Unit
Note
Heating starting
temperature
5
[-10～15]
℃
Heating stopping
temperature= Heating
starting temperature+
Heating return difference
Heating return
difference
10
[3～15]
℃
4.3 Remote monitor
Air conditioner has an RS485 communication interface, supporting MODBUS- RTU communication
protocol。The air conditioner communicates with the upper monitor through the RS485 communication
interface. Or users can check the air conditioner’s running state by viewing the display screen directly and
change its running parameters.
4.4 The control of external fan (Optional)
According to the optional requirement, the external fan (Hydrogen discharge / emergency fan)
automatically realizes cycle hydrogen discharging and emergency ventilation function.

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Hydrogen discharge function(Optional)：When hydrogen discharge cycle comes, air conditioner start
the hydrogen discharge fan, the control switch closes.
hydrogen discharging function
parameter
Default value
Setting range
Unit
cycle
24
[0～72]
h
discharging time
5
[0～10]
Min
Emergency ventilation function (Optional): When the temperature inside cabinet is higher than
Emergency ventilation starting temperature, emergency ventilation fans run; when the temperature inside
cabinet is lower than Emergency ventilation stopping temperature, emergency ventilation fans stop.
Emergency ventilation function
parameter
Default value
Setting range
Unit
starting temperature
45
[28～50]
℃
stopping temperature
42
[25～50]
℃
5Display screen
5.1 Display interface
NO.
Icon
Function
Function explanation
1
Refrigerating
running
Indicate whether refrigerating runs or not
2
Heater running
Indicate whether heater runs or not
3
Fan running
Indicate whether fan runs or not