GIA V4+R GIA2528WD2RN1TC User manual
INSTALLATION MANUAL
VRF
ENGLSIH
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V4+R | x2 | x3 | x4
GIA2528WD2RN1TC | GIA28010WD2RN1TC | GIA33512WD2RN1TC
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MCAC-VTSM-2011-09 Installation
Piping Selection
63
Installation
1 Installation Introduction..............................................56
2 Units Installation...........................................................70
2.1 Installation of Indoor Unit................................................70
2.2 Installation of Outdoor Unit .............................................70
2.3. Installation of MS equipment...........................................76
3 Refrigerant Pipe Engineering.....................................77
3.1 Refrigerant Pipe Processing............................................77
3.2 Air Tight Test..................................................................88
3.3 Vacuum Drying...............................................................90
3.4 Recharge of Refrigerant..................................................92
4 Drainage Pipe Engineering.........................................94
5 Duct Engineering..........................................................99
6 Heat Insulation Engineering.....................................101
7 Electrical Engineering................................................104
8 Commissioning...........................................................106
MCAC-VTSM-2011-09 Installation
64 Piping Selection
1. Installation Introduction
1.1 Select the Refrigerant Piping for V4+ Three pipe Heat Recovery modular type
1.1.1 Length and drop height permitted of the refrigerant piping
Permitted value
Piping
Piping length
Total pipe length(Actual)
350m
L1＋L2＋L3＋L4＋L5＋L6＋L7
＋L8+L9+L10+L11
a＋b＋c＋d＋e＋f＋g＋h＋
i+j+k+l+m+n
Maximum piping(L)
Actual length
150m
L1＋L7＋L9＋j+k+n
Equivalent length
175m
Piping (farthest from the first line pipe
branch) equivalent length
40m
L7＋L9＋j+k+n
Drop height
Indoor unit-outdoor
unit drop height
Outdoor unit up
50m
/
Outdoor unit down
50m
/
Indoor unit to indoor unit drop height
15m
/
Note：
1. All branches must be purchased from Midea, otherwise system is induced to malfunction.
2. Each branch equals to 0.5m pipe length.
N3
(140)
N5
(140) N6
(71)
N7
(71)
N9
(56)
N8
(28)
N2
(71)
N4
(28)
N1
(71)
N10
(56)
ABC
DEⅡ
ⅣⅢ
Ⅰ
b
c
d
f
g
j
h
i
l
km n
e
L1L2
L7
L11
L9
L8L10
L3
a
MS1 MS2
MS3
MS4
MS5
MS6
L4
L5
L6
Outdoor unit
(one or more outdoor units)
(From the first line branch pipe) Maximum
The first line branch pipe
Drop height between indoor
indoor unit to indoor unit
Indoor unit
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Piping Selection
65
1.1.2 Select the refrigerant piping
Note: In the above drawing, the capacity unit of indoor side is (×100W), and the outdoor side is HP.
The Pipe Type
The Detailed Pipe Place
Code
The main pipe
The pipe between outdoor and the first indoor branch
L1
Indoor main pipe
The pipe between indoor main branches
L2~L11
Indoor auxiliary pipe
The pipe between indoor branches
a, b, n
Indoor main branch
The branch for MS equipment
A,B,C,D,E
Indoor auxiliary branch
The branch connecting directly to indoor unit
I, II, III, IV
Outdoor branch
The outdoor branch assy.
L,M
Outdoor unit pipe
The pipe between outdoor unit and outdoor branch, pipe between
outdoor branches
g1, g2, g3, G1
MS Equipment
For shift heating/cooling mode.
MS1, MS6
1.1.2.1 Selection of the main pipe (L1)
E.g. The main pipe (L1) in the above drawing
Please refer to the following table:
Model
The Max. equivalent length of tubing ﹤90m
The Max. equivalent length of tubing ≥90m
Suction
Gas pipe
High-pressure
gas pipe
High-pressure
liquid pipe
The first
branch
Suction
Gas pipe
High-pressure
gas
High-pressure
liquid
The first branch
8HP
.1
FQZHN-02S
FQZHN-02S
10HP
FQZHN-02S
FQZHN-02S
16HP
28.6
15.9
FQZHN-03S
31.8
28.6
15.9
FQZHN-03S
18~20HP
31.8
28.6
15.9
FQZHN-03S
31.8
28.6
FQZHN-03S
24HP
34.9
28.6
15.9
FQZHN-04S
34.9
28.6
FQZHN-04S
26~30HP
34.9
28.6
FQZHN-04S
38.1
31.8
22.2
FQZHN-04S
Notice: main pipe dia.
L1
W3
(8) W2
(8) W1
(10)
ML
g1
j j j j j j
g2 g3
G1
N3
(140)
N5
(140) N6
(71)
N7
(71)
N9
(56)
N8
(28)
N2
(71)
N4
(28)
N1
(71)
N10
(56)
ABC
DEⅡ
ⅣⅢ
Ⅰ
b
c
d
f
g
j
h
i
l
km n
e
L2
L7
L11
L9
L8L10
L3
a
MS1 MS2
MS3
MS4
MS5
MS6
L4
L5
L6
MCAC-VTSM-2011-09 Installation
66 Piping Selection
according to the bigger one.
If the size of tubing for connecting outdoor unit is different from main pipe, a transfer connector should be
mounted.
Indoor main pipe/
indoor branch
Outdoor（HP）
Pipe dimension
(suction gas/discharge gas/Liquid)
Branch
L1/A
W1+W2+W3 =28
38.131.822.2
FQZHN-04S
1.1.2.2 Selection of indoor unit main pipe and the branching pipe
E.g. The branches (A,B,C,D,E, Indoor unit main pipe is between the 1st branching pipe A and the MS. The
branching pipe ( A B, C, D, E) is between the first branching pipe A and MS equipment. And indoor main pipe
(L2~L11) in the above drawing.
Please refer to the following table.
A: The total capacity of subordinate indoor units of tubing (The indoor unit from this tubing to the end)
A (×100W)
Suction Gas pipe
High-pressure gas pipe
High-pressure liquid pipe
Branch joint
A＜56
FQZHN-01S
＜166
9.1
FQZHN-01S
＜230
9.1
FQZHN-02S
＜330
9.1
FQZHN-02S
＜460
28.6
FQZHN-03S
＜660
28.6
FQZHN-03S
＜920
34.9
28.6
9.1
FQZHN-04S
＜1100
41.3
31.8
9.1
FQZHN-04S
1.1.2.3 Selection of the indoor auxiliary pipe and auxiliary branch
E.g. The pipe (a ~ n) in the above drawing. Branch I,II,III,IV
Please refer to the following table.
The total capacity of
Indoor units(×100W)
When indoor unit
When indoor unit pipe length>10m
Branch
Gas side
Liquid side
Gas side
Liquid side
FQZHN-01S
FQZHN-01S
1.1.2.4 Selection of MS:
A (×100W)
MS Box Model
A＜56
GIA-MS02/N1-A
GIA-MS04/N1-A
1.1.2.5 Selection of the Outdoor branch (L, M) and the outdoor unit pipe (g1, g2, g3, G1)
E.g. The branch (L, M) and outdoor unit pipe (g1, g2, g3, G1) in the above drawing.
When there is only single outdoor unit (), please refer to the
following table:
Model
The outdoor unit pipe dia. (mm)
Suction Gas pipe
High-pressure gas pipe
High-pressure liquid pipe
GIA-2528WD1RN1TB
GIA-28010WD1RN1TB
When multi outdoor units are paralleled, please refer to the following table:
Outdoor unit
quantity
Drawing example
Outdoor unit pipe dia.(mm)
Outdoor branch
MCAC-VTSM-2011-09 Installation
Piping Selection
67
1
25.419.1/2.7;
/
2
g1,g2：
16HP: 28.6/;
18-20HP: 28.6/19.1.
L：
FQZHW-02N1S
3
g1,g2,g3：
24HP: 34.928.69.1;
26-30HP: 38.131.822.2
G1: 28.6/
FQZHW-03N1S
Notice: All branches must be purchased from Midea.
1.1.3 Pipe selection example
Please See above Drawing same as 1.1.2, suppose total equivalent pipe length beyond 90m.
1.1.3.1 Select each indoor unit pipe according to the following table
The total capacity of
Indoor units(×100W)
When indoor unit pipe length≤10m
When indoor unit pipe length>10m
Gas side
Liquid side
Gas side
Liquid side
1.1.3.2 Select the indoor unit main pipe (L2~L11) and the branching pipe (B.C.D.E) refer table 4.4
Indoor main pipe/ indoor
branch
Total capacity of
indoor units (×100W)
Range
Pipe dimension
(Suction/Discharge
/Liquid)
Branch
L2/B
N1+N2+N3+N4=310
9.1
FQZHN-02S
L3
N1+N2=172
166230
9.19.5
-----
L4/C
N3+N4=168
166230
9.19.5
FQZHN-02S
L5
N3=140
56166
15.9
-----
L6
N4=28
A<56
.4
-----
L7/D
N510=422
3460
FQZHN-03S
L8/E
N5+ N6+N7=282
9.1
FQZHN-02S
L10
N5=140
56166
15.9
----
L11
N6+N7=142
56166
15.9
----
L9
N8+N9+N10=140
56166
15.9
----
1.1.3.3 ),the branching pipe (eg.Ⅰ,Ⅱ,Ⅲ,Ⅳ)after MS
equipment refer table
*.
Indoor aux. pipe/ indoor
branch
Total capacity of
indoor units (×100W)
Range
Pipe dimension
(gas/Liquid)
Branch
a/Ⅰ
N1+N2=142
A≥56
15.99.5
FQZHN-01C
b
N1=71
A≥56
15.99.5
----
c
N2=71
A≥56
15.99.5
----
d
N4=28
A≤45
12.76.4
----
e
N3=140
A≥56
15.99.5
FQZHN-01C
f
N5=140
A≥56
15.99.5
----
g/Ⅱ
N6+N7=142
A≥56
15.99.5
FQZHN-01C
MCAC-VTSM-2011-09 Installation
68 Piping Selection
h
N6=71
A≥56
15.99.5
----
i
N7=71
A≥56
15.99.5
----
j/Ⅳ
N8140
A≥56
15.99.5
FQZHN-01S
k/Ⅲ,
N9+N10=112
A≥56
15.99.5
FQZHN-01S
m
N9=56
A≥56
15.99.5
----
n
N10=56
A≥56
15.99.5
----
i
N8=28
A≤45
12.76.4
----
1.1.3.4 Select the MS equipment refer table 4.5
MS equipment
Total capacity of indoor units (×100W)
Range
MS model
MS1
N1+N2=142
A≥56
GIA-MS04/N1-A
MS2
N3=140
A≥56
GIA-MS04/N1-A
MS3
N4=28
A≤45
GIA-MS02/N1-A
MS4
N5=140
A≥56
GIA-MS04/N1-A
MS5
N6+N7=142
A≥56
GIA-MS04/N1-A
MS6
N8+N9+N10=140
A≥56
GIA-MS04/N1-A
1.1.3.5 Select the main pipes and branch pipes of indoor units after MS according to table 3.7
Total number of indoor
units under 1 MS
Main Pipe dimension
(gas/Liquid)
Range
Branch Pipe dimension
(gas/Liquid)
MS
1
15.99.5
A≤45
12.76.4
FQZHN-01C
A≥56
15.99.5
2
15.99.5
A≤45
12.76.4
FQZHN-01C
A≥56
15.99.5
3
A≤45
12.76.4
FQZHN-01C
A≥56
15.99.5
4
A≤45
12.76.4
FQZHN-01C
A≥56
15.99.5
1.1.3.6 Select the main pipes and the branching pipes of outdoor unit refer table 3.8
Outdoor unit
connective pipe
capacity of outdoor units
(Hp)
Pipe dimension
(Suction/Discharge Gas/Liquid)
Branching pipes
g1/M
8
25.419.112.7
FQZHW-03N1S
g2/L
8
25.419.112.7
FQZHW-03N1S
g3
10
25.419.112.7
----
G1
18
38.128.619.1
----
1.1.3.7 Compare the total capacity from indoor side and outdoor side, select the main pipe dia. according to
the bigger one.
1.1.4 Branch drawing
1.1.4.1 Indoor branch drawing
Indoor
branch
Liquid side
Suction Gas side
High Pressure Gas side
MCAC-VTSM-2011-09 Installation
Piping Selection
69
FQZHN01S
FQZHN02S
FQZHN03S
FQZHN04S
1.1.4.2 Outdoor branch drawing
branch
model
FQZHW02N1S FQZHW03N1S
Discharge
Gas side
joint
Suction gas
side joint
Liquid side
joint
ID:25.4
ID:19.1
ID:19.1
0D:25.4
ID:22.2
ID:25.4
ID:19.1
ID:19.1
0D:25.4
ID:22.2
ID:28.6
ID:31.8
OD:28.6
ID:28.6
ID:19.1
ID:22.2
OD:28.6
ID:19.1
ID:22.2
OD:28.6
ID:15.9
0D:34.9ID:34.9
ID:38.1
ID:34.9
ID:31.8
ID:31.8
0D:31.8
ID:25.4
0D:31.8
ID:31.8
ID:25.4
ID:31.8
0D:34.9
ID:31.8
ID:38.1
ID:34.9
0D:31.8
ID:25.4
0D:31.8 ID:38.1
ID:41.3
ID:31.8
0D:31.8
ID:31.8
ID:25.4
ID:31.8
ID:25.4
ID:15.9
0D:19.1
ID:19.1
ID:15.9
ID:22.2
ID:19.1
ID:15.9
0D:15.9
ID:12.7
ID:12.7
0D:15.9
ID:15.9
ID:15.9
ID:19.1
ID:15.9
0D:15.9
ID:12.7
ID:12.7
0D:15.9 ID:19.1 0D:22.2ID:22.2
ID:19.1
ID:15.9
0D:15.9
ID:15.9
ID:12.7
MCAC-VTSM-2011-09 Installation
70 Piping Selection
Oil-Balance
pipe
1.1.4.3 Branch pipe drawing after MS
Name
Gas side joints
Liquid side joints
FQZHN01C
1.3 Installation Procedure
1.3.1 Importance of the Installation Operation
Effect of installation issues on equipment:
ID:6.4
P
ID:12.7
(ID:15.9)
OD:19.1
ID:19.1
OD:19.1
ID:19.1
ID:15.9
ID:12.7
(ID:15.9)
OD:19.1
OD:12.7
ID:9.5
ID:9.5
ID:6.4
OD:9.5
ID:6.4
OD:9.5
ID:9.5
Insufficient refrigerant
Over heated running
Compressor fault
Filth blockage of refrigerant pipe
Leakage of refrigerant pipe
Product of the chemical reaction between ice or water of
throttling parts and the refrigerant damages the insulation
Moisture of refrigerant pipe
Degraded efficiency or
abnormal protection
Improper
installation
location
Degraded heat exchange effect of indoor unit
No maintenance space leading to difficult in upkeep
Poor heat dissipation of outdoor unit
No insulation test for power supply line
Damaged electric parts
Cross connection between power cable and signal
cable
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71
1.3.2 General procedure
Pipe pre-install engineering...............................Ensure that the water drainage pipe inclines downward
Installing indoor unit Check the model to avoid incorrect installation
Refrigerant piping engineering ...........................Keep the refrigerant pipes dry, clean and sealed
Water drainage piping engineering ......................Downward inclination
Air duct engineering........................................Ensure sufficient ventilation rate
Thermal insulation engineering...........................Ensure no gap between the thermal insulation materials
Electric engineering ........................................Select proper power cables
(signal cable, power cable) ............................. (Use 3-cores shielded wires)
On-site setup Follow the wiring diagram (to avoid incorrect setup)
Civil work for outdoor unit .................................Avoid short-circuit ventilation and ensure sufficient maintenance
space
Installing outdoor unit......................................Avoid short-circuit ventilation and ensure sufficient maintenance
space
Air tightness test............................................Check whether the air pressure remains at 4.0Mpa (R410a) after
correction is made within 24 hours
Vacuum drying Use vacuum pump that has a vacuum degree of less than -775mmHg
recharging refrigerant......................................Record the amount of refrigerant to be recharged on the outdoor
unit and document it
Installing decorative panel ................................Ensure no gap between decorative panel and ceiling
Test Running and commissioning........................Run the indoor units one by one to check whether any pipe or cable
is incorrectly installed
Delivering operation instructions .........................Deliver relatedmaterials while providing operation instructionto the
user
Note: The general procedure for refrigerant machine is subject to change according to the situation
MCAC-VTSM-2011-09 Installation
72 Unit Installation
1.3.2 Install indoor unit’s procedure
Note: 1. The hook must strong enough to sustain the weight of indoor unit.
2. Check the models of indoor units before installation.
3. Pay attention to the main devices, such as the pipeline.
4. Hold enough places for maintenance.
1.3.3 Refrigerant pipe procedur
1.3.4 Drainage pipe procedure
Note: It is no need to insulate the drainpipe if you choose the plastic pipe as drainpipe.
1.3.5 Electric wiring
1.3.5.1 Please select power supply for indoor unit and outdoor unit separately. Both indoor units and
outdoor units should be grounded well.
1.3.5.2 The power supply should have specified branch circuit with leakage protector and manual switch.
1.3.5.3 Please put the connective wiring system between indoor unit and outdoor unit with refrigerant
piping system together.
1.3.5.4 Power wiring should be done by professional electrician and complied with relevant National
Electric Standard.
1.3.5.5 The power supply, leakage protector and manual switch of all the indoor units connecting to the
same outdoor unit should be universal. (Please set all the indoor unit power supply of one system into
the same circuit.)
1.3.5.6 It is suggested to use 3-core shielded wire as signal wire between indoor and outdoor units,
multi-core wire is unavailable. Pay attention to the consistency. When signal wire parallel to the power
wire, please keep enough distance (about 300mm at least) to prevent interference.
1.3.5.7 nlaced together.
1.3.6 Lay the indoor pipeline
Note: Collocate the air-outlet reasonably to prevent airflow short-circuit. Check the static pressure
whether in the allowable range. The air filters should be easy to unpick and wash. Do pressure test on
pipeline.
1.3.7 Heat-insulation procedure
Note: For welding part, flare part and branch pipe, heat-insulation work must be done after finished the
pressure test.
1.3.8 Install outdoor unit
Note: 1. Gutter must be set around the foundation to drain the condensation water.
2. When installing outdoor units at the roof, please check the strength of the roof and pay
Confirm installation position
Label installation position
Install hooks
Install indoor units
Install indoor units
Install pipe
Weld
Add Nitrogen
Temporary pipeline
Flush
Pressure test
Vacuum dry
Install indoor units
Connect drainpipe
Check water leakage
Drainpipe heat-insulation and test-run
Refrigerant pipe work
Check the heat-insulated part
Pressure test
Heat-insulation work
MCAC-VTSM-2011-09 Installation
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73
attention not to destroy the waterproof of the roof.
1.3.9 Recharge refrigerant procedure
Note: Please calculate the additional amount of refrigerant according to the formula that we supply to
you, and the calculation result must be correct
1.3.10 Main points of test running and Commissioning
Please check the following issues before turning on the power:
1.3.10.1 Vacuum dry: Make sure the vacuum degree accord with our requirement about 10-5.
1.3.10.2 Wiring: Includes the power wiring and communication wiring; Recheck the connection
according to our corresponding wire diagrams. Especially, please remember our communication wire is
polar; it means you must connect the communication wire correspondingly to the terminal block.
1.3.10.3 Additional charge of refrigerant: Recheck the calculation formula and recalculate the total
recharge volume according to our supplied formula.
1.3.10.4 Open the stop-valve of gas and liquid pipe with Allen key; Check leakage of stop-valve with
soap water. Please confirm whether the outdoor unit has been connected to the power for 12hr before
start test running.
Test running: Turn on all of the indoor units with cooling mode and set the temperature in 17degree with
high fan speed first, after the system operated, test following operation parameters of the system,
including indoor units and outdoor units parameters.
1.4 Installation Preparation
1.4.1 Installation tools and instruments
All the necessary tools should be available, and their models and specifications should meet the
installation and technical requirements. The instruments and meters should be tested or verified, and
their scales and accuracy should meet the requirements. The common tools for installing refrigerant
machine are listed below.
No.
Name
Specification/Model
No.
Name
Specification/Model
1
Pipe cutter
15
Electronic scale
2
Steel saw
16
Stop
3
Pipe bender
Spring, mechanic
17
Thermometer
4
Pipe expander
Depend on the pipe
diameter specification
18
Meter rule
5
Flaring tool
Depend on the pipe
diameter specification
19
Screw driver
-
6
Brazing welder
Depend on the nozzle
size
Adjustable
spanner
7
Scraper
21
Resistance tester
8
File/Rasp
22
Electro probe
9
Injection tube
23
Multimeter
10
Double-ended
pressure gauge
4.0MPa
24
Pressure reducing
valve
11
Pressure gauge
1.5MPa, 4.0MPa
25
Wire pliers
12
Vacuum gauge
-756mmHg
26
Clamping pliers
13
Vacuum pump
At least 4 liters/second
27
Hexagon ring
spanner
14
Horizontal rule
28
Torque wrench
In addition, tools such as electric welder, cutter, A-shape ladder, electric drill, folding machine, forming
machine, nitrogen cylinder are also generally used during the installation.
1.4.2 Audit of construction drawings
Calculate the added volume according to liquid pipe length
Recharge refrigerant
MCAC-VTSM-2011-09 Installation
74 Unit Installation
Before the engineering installation, read carefully the related drawings to understand the design
intention, audit the drawings, and then work out a detailed engineering organization plan.
1. Make sure that the pipe diameters and branch pipe models meet the technical specifications.
2. Ratio of slope, drainage mode and thermal insulation of condensate water.
3. Making of air duct and air opening, and air ventilation organization.
4. Configuration specifications, model and control mode of power cables.
5. Making, total length and control mode of control cable.
The engineering construction staff should follow the construction drawing strictly during the construction.
If any change is required, such change should be approved by the design department and be
documented.
1.4.3. Construction organization plan
Construction organization plan serves as the comprehensive technical and economic documents that
guide the construction preparation and scientific construction organization. A reasonable construction
organization plan and careful implementation of it are essential to ensure smooth construction, shorten
construction period, ensure construction quality, and improve economic results.
The construction plan should be concise and focuses on key procedures, construction method, and time
coordination, space disposal of the construction around the features of the engineering, thus to ensure
smooth construction operation.
1.4.4. Training of installation team
Establish sound training mechanisms. Service engineers are required to train installation team
managers, work supervisors to train workers, and managers to train workers of special type. Establish a
management mechanism in which pre-working training, before-shift disclosure and after-shift
implementation are available.
1.4.5. Coordination with other sectors
Ensure smooth coordination and meticulous organization between these sectors: air conditioning, civil
work, electricity, water supply and drainage, fire protection, decoration, intelligence, etc. Try best to lay
pipes of the air conditioning system along the bottom of the beam. If pipes meet together at the same
height, follow these principles:
1. Ensure that gravity pipes take precedence over water drainage pipes, air ducts and pressure pipes.
2. Ensure that large pipes take precedence over air ducts and small pipes.
1.4.6. Pipe pre-install engineering
1.4.6.1. Operation procedure
Raise requirements to the civil work sector and coordinate Determine the position, size and quantity
of the machines, and conduct pre-installing Check the pre-installing results
1.4.6.2. Pipeline route
1. The pipe for condensate water should have a downward slope (the slope should be at least 1/100).
2. The diameter of the through hole for the refrigerant pipe should take the thickness of the thermal
insulation material into consideration (it is recommended to lay the gas pipe and liquid pipe in two
separate columns).
3. Note that sometimes through hole is not allowed because of the structure of the beam.
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Highlights:
1) When selecting the parts to be pre-installed, ensure that the weight of the accessories is also
calculated.
2) In a situation where metal parts to be pre-installed is not allowed, use expansion bolts while ensuring
sufficient load-bearing capacity.
Caution: The above figure is for reference only. It is not recommended to dig holes on either the beam
or the shear wall. If such operation is indeed needed, please consult the property owner (or manager)
and the civil work sector, and get written approval from the competent authority.
1.4.7 Warning
(1) Be sure only trained and qualified service personnel to install, repair or service the equipment.
Improper installation, repair, and maintenance may result in electric shocks, short-circuit, leaks, fire or
other damage to the equipment.
(2) Install according to this installation instructions strictly.
If installation is defective, it will cause water leakage, electrical shock fire.
(3) When installing the unit in a small room, take measures against to keep refrigerant concentration
from exceeding allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information. Excessive refrigerant in a closed ambient can lead
to oxygen deficiency.
(4) Use the attached accessories parts and specified parts for installation. otherwise, it will cause the set
to fall, water leakage, electrical shock fire.
(5) Install at a strong and firm location which is able to withstand the set' s weight.
If the strength is not enough or installation is not properly done, the set will drop to cause injury.
(6) The appliance must be installed 2.5m above floor.
(7) The appliance shall not be installed in the laundry.
(8) Before obtaining access to terminals, all supply circuits must be disconnected.
(9) The appliance must be positioned so that the plug is accessible.
(10) The enclosure of the appliance shall be marked by word, or by symbols, with the direction of the
fluid flow.
(11) For electrical work, follow the local national wiring standard, regulation and installation instruction.
An independent circuit and single outlet must be used.
If electrical circuit capacity is not enough or defect in electrical work, it will cause electrical shock fire.
(12) Use the specified cable and connect tightly and clamp the cable so that no external force will be
acted on the terminal.
If connection or fixing is not perfect, it will cause heat-up or fire at the connection.
(13) Wiring routing must be properly arranged so that control board cover is fixed properly.
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If control board cover is not fixed perfectly, it will cause heat-up at connection point of terminal, fire or
electrical shock.
(14) If the supply cord is damaged, it must be replaced by the manufacture or its service agent or
similarly qualified person in order to avoid a hazard.
(15) An all-pole disconnection switch having a contract separation of at least 3mm in poles should be
connected in fixed wiring.
(16) When carrying out piping connection, take care not to let air substances go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosion and
injury.
(17) Do not modify the length of the power supply cord or use of extension cord, and do not share the
single outlet with other electrical appliances.
Otherwise, it will cause fire or electrical shock.
(18) Carry out the specified installation work after taking into account strong winds, typhoons or
earthquakes.
Improper installation work may result in the equipment falling and causing accidents.
Remark: Failure to observe a warning may result in death.
1.4.8 Caution
(1) Ground the air conditioner.
Do not connect the ground wire to gas or water pipes, lightning rod or a telephone ground wire.
Incomplete grounding may result in electric shocks.
(2) Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric shocks.
(3) Connect the outdoor unit wires, and then connect the indoor unit wires.
You are not allowed to connect the air conditioner with the power source until wiring and piping the air
conditioner is done.
(4) While following the instructions in this installation manual, install drain piping in order to ensure
proper drainage and insulate piping in order to prevent condensation.
Improper drain piping may result in water leakage and property damage.
(5) Install the indoor and outdoor units, power supply wiring and connecting wires at least 1 meter away
from televisions or radios in order to prevent image interference or noise.
Depending on the radio waves, a distance of 1 meter may not be sufficient enough to eliminate the
noise.
(6) The appliance is not intended for use by young children or infirm persons without supervision. Young
children should be supervised to ensure that they do not play with the appliance.
(7) Don't install the air conditioner in the following locations:
There is petrolatum existing.
There is salty air surrounding (near the coast).
There is caustic gas (the sulfide, for example) existing in the air (near a hot spring).
The Volt vibrates violently (in the factories).
In buses or cabinets.
In kitchen where it is full of oil gas.
There is strong electromagnetic wave existing.
There are inflammable materials or gas.
There is acid or alkaline liquid evaporating.
Other special conditions.
(8) The insulation of the metal parts of the building and the air conditioner should comply with the
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regulation of National Electric Standard.
Remark: Failure to observe a caution may result in injury or damage to the equipment.
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2. Units Installation
2.I. Installation of Indoor Unit
2.1.1 Installation procedure
Determine the installation position Scribing and locating Installing suspension road Installing the
indoor unit
2.1.2 Cautions for installation and check
1) Drawing check: Confirm the specification, model and installation direction of the set.
2) Height: Ensure that it closely fits the ceiling.
3) Suspension strength: The suspension road shall be strong enough to bear the weight twice of the
indoor unit to ensure that no abnormal vibration or noise is generated when the set is running.
4) When installing the indoor unit, ensure that sufficient space is available for installing condensate water
pipe.
5) Horizontal degree: It shall be kept within ±1°.
Purpose: Ensure smooth drainage of condensate water. Also ensure stability of the machine body to
induce the risks caused by vibration and noise.
Hidden trouble of incorrect operation: a. Water leakage; b. Abnormal vibration and noise
6) Ensure sufficient maintenance & upkeep is available (keep a large enough maintenance hole,
typically 400x400mm).
7) Avoid short-circuit ventilation.
Purpose: Ensure sufficient heat exchange of indoor unit and good air conditioning effect.
Risk of incorrect operation: Poor air conditioning effect; abnormal protection of the set.
2.2. Installation of Outdoor Unit
2.2.1. Acceptance and unpacking
1. After the machine arrives, check whether it is damaged during the shipment. If the surface or inner
side of the machine is damaged, submit a written report to the shipping company.
2. Check whether the model, specification and quantity of the equipment conform to the contract.
3. After removing the outer package, please keep the operation instructions well and count the
accessories.
2.2.2. Hoisting outdoor unit
Do not remove any package before the hoisting. Use two ropes to hoist the machine, keep the machine
in balance, and then raise it safely and steadily. In case of no package or if the package is damaged, use
plates or packing material to protect it.
When conveying and hoisting the outdoor unit, keep it upright, ensure that the slope does not exceed
30°, and keep safety in mind.
2.2.3. Selecting installation position
1. Ensure that the outdoor unit is installed in a dry, well-ventilated place.
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2. Ensure that the noise and exhaust ventilation of the outdoor unit do not affect the neighbors of the
property owner or the surrounding ventilation.
3. Ensure that the outdoor unit is installed in a well-ventilated place that is possibly closest to the indoor
unit.
4. Ensure that the outdoor unit is installed in a cool place without direct sunshine exposure or direct
radiation of a high-temperature heat source.
5. Do not install the outdoor unit in a dirty or severely polluted place, so as to avoid blockage of the heat
exchanger in the outdoor unit.
6. Do not install the outdoor unit in a place with oil pollution, salt or high content of harmful gases such as
sulfurous gas.
2.2.4. Base for outdoor unit
1. A solid, correct base can:
1) Avoid the outdoor unit from sinking.
2) Avoid the abnormal noise generated due to base.
2. Base types
1) Steel structure base
2) Concrete base (see the figure below for the general making method)
Remark:
The key points to make basement:
diagram to make concrete basement in detail, or make after field measurements.
2) In order to ensure every point can contact equality, the basement should be on completely level.
be flat. The standard concrete mixtu
reinforcing steel bar, the surface of the cement and sand plasm must be flat, border of the basement
must be chamfer angle.
4) In order to drain off the seeper around the equipment, a discharge ditch must be setup around the
basement.
5) Please check the affordability of the roofing to ensure the load capacity.
2.2.5. Installation highlights for outdoor unit
1. Install vibration isolator or isolating pad between the set and the base by the design specification.
2. Ensure close between the outdoor unit and the base, or significant vibration and noise may occur.
Outdoor unit
Concrete basement
h=200mm
10Expansionbolt
Rubbershocking
proofmat
Solidground
orroofing
200mm
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3. Ensure that outdoor unit is well grounded.
4. Before commissioning, do not turn on the valves of the gas pipe and liquid pipe of the outdoor unit.
5. Ensure sufficient maintenance space is available at the installation site.
2.2.6. Installation space for outdoor unit.
1) One row:
2) Two rows
3)More than two rows
4) When the outdoor unit is lower than the surrounding obstacle,
Refer to the layout used when the outdoor unit is higher than the surrounding obstacle. However, to
avoid cross connection of the outdoor hot air from affecting the heat exchange effect, please add an air
director onto the exhaust hood of the outdoor unit to facilitate heat dissipation. See the figure below. The
height of the air director is HD (namely H-h). Please make the air director on site.
>1m
>1m
>1m
100-500mm
Front Front
>800mm
>1m
>1m>1m
>1m
100-500mm
Front Front
Front Front
800mm up
>1m>1m
>1m
>1m
>1m
100-500mm
Front Front
Front Front
Front Front
800mm up
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5)For limited space installation
If miscellaneous articles are piled around the outdoor unit, such articles must be 800mm below the top of
the outdoor unit. Otherwise, a mechanic exhaust device must be added.
6)Set the snow-proof facility
In snowy areas, facilities should be installed to prevent snow. (See the figure below) (defective facilities
may cause malfunction.) Please lift the bracket higher and install snow shed at the air inlet and air outlet.
2.2.7. Mount the air deflector
When installing, takes off the mesh firstly, and then conduct in according of the following two schedules.
>1m
100-500mm
Front Front
>1m
>1m
hh-H
H
AB
CD
>45°
>1000mm
>300mm
Airflow deflector
Front view
B
A
B
A
C
D
Sideview
B
A
Front view Frontview
Snow shed for air outlet
Snowshedforairinlet
Snowshedfor airinlet
This manual suits for next models
4
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