Haier AV08IMVURA User manual

No. 0150530707
Installation Manual for Commercial Air Conditioner
Outdoor Unit
AV08IMVURA
AV10IMVURA
AV12IMVURA
AV14IMVURA
AV16IMVURA
AV18IMVURA
AV20IMVURA
AV22IMVURA
• Please read this manual carefully before using.
• Keep this operation manual for future reference.
Original instructions

Contents
Safety ................................................................................................................................................................................1
Installation instruction........................................................................................................................................................3
Installation procedure ......................................................................................................................................................13
Electric wiring and the application ...................................................................................................................................27
Failure code.....................................................................................................................................................................40
Trial operation and the performance ...............................................................................................................................45
Move and scrap the air conditioning................................................................................................................................46
This series is cooling and heating heat recovery models.
Only when the system is equipped with VP device, indoor
units under di󰀨erent VP device can achieve cooling and
heating simultaneously. The modes of the indoors which
under the same Valve Package (following text called VP)
device should be the same. If the indoors connected without
VP device, the indoors only can do cooling mode.
Two-generation valve boxes VP*-*A and VP*-*B can’t be
mixed used in one system.
To protect compressor, before startup, the unit should be
electried for over 12 hours. If the unit is not used for a long
time, please cut o󰀨 the power to save energy, or the unit will
consume the power.
Operation condition:
To use the air conditioner normally, please perform as to the
right conditions.
Warning
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons
in order to avoid a hazard.
• This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental
capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning
use of the appliance by a person responsible for their safety.
• Children should be supervised to ensure that they do not play with the appliance.
• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning
use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
• The appliances are not intended to be operated by means of an external timer or separate remote-control system.
• Keep the appliance and its cord out of reach of children less than 8 years.
• Means for disconnection having a contact separation in all poles that provide full disconnection under overvoltage
category III conditions must be incorporated in the xed wiring in accordance with the wiring rules.
• The appliance shall be installed in accordance with national wiring regulations.
• Before connected to the supply mains, the supply cord of the units shall be connected to an all-pole full disconnection
cricuit breaker, which has has been approved per IEC 60898. Please refer to "Electric wiring and the application" on
page 23 for details.
• The installation of a residual current device (RCD) having a rated residual operating current not exceeding 30 mA is
advisable.
• The maximum working pressure is 4.15MPa. This maximum working pressure shall be considered when connecting
the outdoor unit to indoor units.
• The refrigerant used in the outdoor unit is R410A. Please refer to "Installation procedure" on page 20-21 of this manual
for the refrigerant charging.
• The outdoor unit shall only be connected to indoor units suitable for the same refrigerant.
• The unit is a partial unit air conditioner, complying with partial unit requirements of the International Standard, and must
only be connected to other units that have been conrmed as complying to corresponding partial unit requirements of
the International Standard.
User Manual
Operating Range of Air Conditioner
Cooling
dry
Indoor Max. DB:32°C WB:23°C
Min. DB:18°C WB:14°C
Outdoor Max. DB:48°C
Min. DB:-5°C
Heating
Indoor Max. DB:27°C
Min. DB:15°C
Outdoor Max. WB:15.5°C
Min. WB:-15°C
Cooling
and
heating
Indoor Max. DB:27°C
Min. DB:18°C WB:14°C
Outdoor Max. WB:20°C
Min. WB:-10°C

1
WARNING
• If the air conditioner is transferred to the others, this manual should be tranferred together.
• Before installation, please read "Safety precaution" carefully to conrm the correct installation.
• The mentioned precaustion includes " WARNING" and " CAUTION". The precausion caused death or heavy injury
for faulty installation will be listed in " WARNING". Even the cautions listed in " CAUTION" also may cause serious
accident. So both of them are related to the safety, and should be executed severely.
• After installation, perform a trial and conrm everything normal, then introduce the operation manual to the user.
Besides, put the manual to the user and ask them to preserve it carefully.
• The installation or the maintenance should be performed by the authorized agency. Or the non-specialized operation will
cause water leakage, electric shock or re etc accidents.
• The installation should be executed as per the manual, or the faulty installation will cause water leakage, electric shock
or re etc accidents.
• Please install the unit at the space which can bear the weight. Or the unit will drop down to cause the human injury.
• The installation should defend against the typhoon, and the earthquake etc. Abnormal installation will cause the unit fall
down.
• Use the correct cable and make reliable earthing. Fix the terminal rmly and the loose connection will cause heating or
re etc accident.
• The wiring should be in shape and can not be raised. Be earthed rmly and can not be clipped by the electric box cover
or the other plate. The incorrect installation will cause heating or re.
• When setting or transferring the unit, there should not be other air into the refrigerant system except for R410A. The gas
mixture will cause the abnormal high pressure which will cause break or human injury etc accidents.
• When installation, please use the accessories with the unit or the special parts, or it will cause water leakage, electric
shock, re, refrigerant leakage etc accidents.
• Don't lead the water drainage pipe into the drainage groove with the poisonous gas, such as sulphur. Or the poisonous
gas will enter indoor.
• In installation or after installation, please conrm if there is refriegerant leakage, please take measures for ventilation.
The refrigerant will cause poisonous gas as meeting re.
• Don't install the unit at the place where there may be ammable gas leakage. In case the gas leaks and gather around
the unit, it will cause re.
• The drainage pipe should be installed as per the manual to conrm the uent drainage. Also take measures for heat
insulation against dew drop. Incorrect water pipe installation will cause water leakage even and make the things wet.
• For the liquid pipe and the gas pipe, take measures for heat insulation too. If there is no heat insulation, the dew drop
will wet the things.
Safety

2
CAUTION
R-410A specied tools Remarks
1Gauge manifold Range: HP ＞4.5MPa, LP ＞2MPa
2Charge hose Pressure: HP: 5.3MPa, LP: 3.5MPa
3Electronic balance for charging R410A Can not use the measurable charging tank
4Torque spanner
5Flare tool
6Copper pipe gauge for adjusting projecting margin
7Vacuum pump adapter Must be with reverse stop valve
8Leakage detector Can not use freon leakage detector, but the He detector
• Execute earthing for the unit. But the earthing wire can not be connected to the gas pipe, water pipe, lightening rod or
the telephone earthing wire. Improper earthing will cause electric shock.
• Don't install the unit at the place where leaks the ammable gas. Or it will cause re.
• Execute the water drainage pipe according to the manual, improper installation will cause water leakage to wet the
family things.
• The outdoor fan can not face to the ower or the other vegetable, or the blowing gas will make the ower dried up.
• Please ensure the maintenance room, if not, it will cause the maintenance person damaged.
• When installing the unit on the roof or the other high place, to prevent the person falling down, please set the xed
ladder and the railing at the passage.
• Use the two-end spanner, and fasten the nut at proper torque. Don't fasten the nut excessively against the ared setion
broken. Or it will cause refrigerant leakage and lack of oxygen.
• Take measures for heat insulation to the refrigerant pipe, or there will be water leakage or dew drop to wet the family
things.
• After nishing the refrigerant pipe, make leakage test by charging the nitrogen. In case the refrigerant leaks in a small
room and exceeds the limited concentration, it will cause lack of oxygen.
• Don't use the other refrigerant except for R410A. The R410A pressure is 1.6 times higher than R22 pressure. The
refrigerant R410A tank is marked with pink sign.
• Against charging di󰀨erent refrigerant, we changed the stop valve diameter of the R410A unit. To enhance the
compression consistance, we also changed the ared pipe dimension. Prepare the R410A specially tools according to
the below table.
• When charging refrigerant, the refrigerant must be taken out as liquid state from the tank.
• When installing indoor unit, outdoor, power cable and connecting wire, leave them at least 1m away from the TV set or
the radio against interference for the image or the noise.
• In the room with uorescent lamp (reverse phase or rapid start type), the remote signal may be not reach the pre-set
distance. The farther that indoor is away from uorescent lamp, the better.
• When loaded into a refrigerant, be sure to take it out of the tank.
• Installation of indoor, outdoor, power lines and connections must be at least 1m away from the TV or radio to avoid
image interference or noise.
• In a room equipped with uorescent lamps (RP or fast start), the remote control signal transmission distance may not
reach a predetermined value. The farther away the indoor machine is, the better it is.
• The tightening torque of the stop valve refer to the following table
Safety
Operating valve size
(mm)
Fastening torque
(N.m)
Fastening angle
(°)
Recommended tool length
(mm)
Ø6.35 14~18 45~60 150
Ø9.52 34~42 30~45 200
Ø12.7 49~61 30~45 250
Ø15.88 68~82 15~20 300
Ø19.05 84~98 15~20 300

3
In installation, please check specially the below items:
• If the connected units quantity and the total capacity is in the allowable range?
• If the refrigerant pipe length is in the limited range?
• If the pipe size is proper? And if the pipe is installed horizontally?
• If the branch pipe is installed horinzontally or vertically?
• If the additional refrigerant is counted correctly and weighed by the standard balance?
• If there is refrigerant leakage?
• If all the indoor power supplies can be on/o󰀨 simultaneously?
• If the power voltage is in compliance with the data marked on the rating label?
• If the address of indoors and outdoors has been set?
Before installation
1) Before installation, check if the model, power supply, pipe, wires and parts purchased respectively are correct.
2) Check if the indoors and outdoors can be combined as the following.
Installation instruction
Outdoor Indoor
Capacity (100W) Combination type Indoor Qty Total indoor capacity (kBtu/h) Gather pipe
224 Single (8HP) 1~15 126~328 -
280 Single (10HP) 1~17 140~364 -
335 Single (12HP) 1~20 168~436 -
400 Single (14HP) 1~24 200~520 -
450 Single (16HP) 1~27 225~585 -
504 Single (18HP) 1~30 252~655 -
560 Single (20HP) 1~33 280~728 -
615 Single (22HP) 1~36 308~800 -
680 Combination (335+335) 1~40 340~884
HZG-R20B
735 Combination (335+400) 1~43 368~956
800 Combination (400+400) 1~46 393~1021
850 Combination (400+450) 1~50 425~1105
900 Combination (450+450) 1~53 450~1170
954 Combination (450+504) 1~57 480~1248
1008 Combination (504+504) 1~60 505~1313
1064 Combination (504+560) 1~64 533~1385
1120 Combination (560+560) 1~64 565~1469
1175 Combination (560+615) 1~64 590~1534
1230 Combination (615+615) 1~64 620~1612
1300 Combination (400+450+450) 1~64 650~1690
HZG-R30B
1350 Combination (450+450+450) 1~64 680~1768
1404 Combination (450+450+504) 1~64 702~1825
1458 Combination (450+504+504) 1~64 729~1895
1512 Combination (504+504+504) 1~64 757~1968
1568 Combination (504+504+560) 1~64 785~2041
1624 Combination (504+560+560) 1~64 812~2111
1680 Combination (560+560+560) 1~64 840~2184
1735 Combination (560+560+615) 1~64 868~2256
1790 Combination (560+615+615) 1~64 900~2340
1845 Combination (615+615+615) 1~64 928~2412

4
Installation instruction
Note:
a. If all the indoor units operate at the same time in one system, the total indoor units capacity should be less than or
equal to the total outdoor units capacity. Otherwise,overloading operations may occur in bad operating condition or
some special conditions. If all the indoor units don't operate at the same time in one system,the total indoor units
capacity should be no more than 130% of the total outdoor units capacity.
c. If the system operates in high heat load or cold area (Ambient Temperature below -10°C), the total indoor units capacity
should be less than the total outdoor units capacity.
d. To choose combinations' wires and air switches according to the Max. operating current of the combinations.
Installation place selection
Air-conditioner can't be installed in the
place with inammable gas. Or it will
cause re hazard.
The unit should be installed at the
place with good ventilation. No
obstacle at the air inlet/outlet. And no
strong wind blows the unit.
The installation space refers to the
latter info.
The unit should be installed at the
strong enough place. Or it will cause
vibration and noise.
Outdoor Indoor
Capacity (100W) Combination type Indoor Qty Total indoor capacity (kBtu/h) Gather pipe
1908 Combination (450+450+504+504) 1~64 960~2496
HZG-R40B
1962 Combination (450+504+504+504) 1~64 988~2568
2016 Combination (504+504+504+504) 1~64 1020~2652
2072 Combination (504+504+504+560) 1~64 1048~2723
2128 Combination (504+504+560+560) 1~64 1075~2795
2184 Combination (504+560+560+560) 1~64 1103~2867
2240 Combination (560+560+560+560) 1~64 1120~2912
2295 Combination (560+560+560+615) 1~64 1148~2984
2350 Combination (560+560+615+615) 1~64 1175~3055
2405 Combination (560+615+615+615) 1~64 1203~3127
2460 Combination (615+615+615+615) 1~64 1230~3198
• The unit is better not be installed
at the below places, or it will cause
damage.
• The place where there is corrosive
gas (spa area etc).
• The place blowing salty air (seaside
etc).
• Exsits the strong coal smoke.
• The place with high humidity.
• The place where there is device
emitting Hertzian waves.
• The place where voltage changes
greatly.
• The place where the water can ow
uently.
• The place where no other heat
source will a󰀨ect the unit.
• Pay attention to the snow against
clogging the outdoor.
• In installation, install the anti-
vibration rubber between the unit
and the bracket.
The unit should be installed at the
place where the cold/hot air or
noise will not interfere the neighbours.

5
Transportation
• In transportation, please don't dismantle the packaging, and move the unit to the installation location as closely as
possible.
• Don't hang the unit only at two points. When hanging the unit, don't sit on the unit. The unit should be upright. When
removing the unit with the forklift, put the fork into the special hole at bottom of the unit. When being hanged, the rope
should be 4 pieces of steel cable with over 8mm diameter. Put the cushion at the contact section between steel cable
and the unit against the distortion or damage.
• When ring unit use hosting hole at base of unit. Protect unit against riging damage by
using cusion.
Installation instruction
Forklift hole
distance
480mm
Hoisting hole diameter Ø40mm, distance730mm
AV08~14IMVURA
Forklift hole
distance
480mm
Hoisting hole diameter Ø40mm, distance1042mm
AV16~22IMVURA
Steel cable
Cushion
Hoisting hole

6
Outline and installation dimensions
AV08~14IMVURA
AV16~22IMVURA
Fixed hole distance
800mm
Drain hole
Fixed hole distance
755mm
980mm
Exhaust duct
connection position
1690mm
70mm
Signal wire hole diameter Ø25
(Use attachment rubber plug for
Line protection）Refrigerant pipe outlet（two pipe)
Refrigerant pipe outlet (Three pipe)
Power line outlet (According to the
choice of the power line diameter
size. The export, use the attached
wire into the sheath)
Signal line and
power line outlet
Line protection
750mm
Fixed hole distance
1000mm
Drain hole
Fixed hole distance
755mm
1410mm
1690mm
750mm
70mm
Exhaust duct
connection position
Refrigerant pipe outlet (Three pipe)
Power line outlet (According to the
choice of the power line diameter
size. The export, use the attached
wire into the sheath)
Signal wire hole diameter
Ø25 (Use attachment
rubber plug for Line
protection）
Refrigerant pipe outlet（two pipe)
Signal line and
power line outlet
Line protection
Installation instruction

7
Outdoor unit installation
Standard accessories
Please check the attachment is complete, please be sure to use.
No. denition Graphic Quantity Remarks Place position
1Installation
instruction 1Accessory bag
4Rubber
plug 1Signal line
protection Accessory bag
5sheath 1Power line
protection Accessory bag
6Reducing
pipe Reducing pipe Accessory bag
7wiring
harness 4Gas liquid pipe
insulation binding Accessory bag
8Wrench 1Remove service
panel
The outdoor
machine foot
beam
1. Choose a place that can carry the weight of the unit to install and x, so that the unit will not shake or fall. The unit shall
be installed in a at area (below 1/100).
2. Do not install the unit in the areas where there may be ammable, explosive, corrosive gas leakage.
3. Indoor and outdoor machines should be close to each other as much as possible to reduce the length of the refrigerant
pipeline and the number of bends.
4. The installation should be to ensure that units from the sun and rain, dust, typhoon, earthquake proof place. In the area
of snow, the machine should be installed in the frame or under the snow cover, so as to avoid the machine snow. See
Figure 1
5. Make sure that there is enough room for maintenance
6. Measures should be taken to avoid contact with children
7. The refrigerant pipe by the unit below should be used when the overhead, overhead part height 200mm above. See
Figure 2
Snow cover (customer buy)
Wind shield (the customer at
his own expanse)
Seasonal wind
The base height should be
considered the maximum
snowfall locally, Prevent snow
height exceeds the unit angle. Please use M12 xed ancher bolts, each machine 4, and use
shock absorbers or cusions to reduce noise
Aerial part
height above
200mm
Figure 2Figure 1
Installation instruction
(8HP)
2
2
2
(10HP)
2
2
1
(12~14HP)
2
1
(16~22HP)
1

8
Combination installation dimensions
1. Single installation
• There should be no obstacles in 2000mm above the top of outdoor unit;
• Obstacles around outdoor should be greater than 900mm to the bottom of unit.
• When multiple modules are installed, the outdoor should be in ranked as the capacity, the larger capacity is closer to the
main pipe of gather pipe.
˃900mm
˃2000mm
Air outlet
˃1000mm
˃300mm
˃300mm
˃300mm
Front
Back
Left
Right
˃300mm ˃200mm
˃1000mm ˃300mm
Unit can be installed in the same or opposite direction
2. combination installation
Installation instruction

9
˃300mm
˃300mm
˃1000mm
˃200mm
Place with air inlet hole
Notes:
a. Fan speed Vs at air inlet is 1.5m/s or below.
b. Air outlet height HD=H-h and below 1m.
˃300mm
˃300mm
˃1000mm
˃200mm
H
HD
h
External air
duct
˃1000mm
3. Wall higher than the outdoor condenser
Installation instruction

10
Place without air inlet hole
Notes:
a. Set a 500~1000mm bracket.
b. Air outlet height HD=H-h and below 1m.
˃300mm
˃300mm
˃1000mm
˃200mm
H
HD
h
External air duct
500~1000
4. The outdoor machine installation should consider the impact of seasonal wind, don't let the wind directly into the unit
return air, otherwise it will a󰀨ect the unit defrosting and related functions
5. Must be arranged to follow the following principles in the exhaust duct
• Install exhaust duct before the machine must be taken out of the wind protection network, otherwise it will a󰀨ect the
output of the unit, and then lead to the decline in performance, and even cause failure
• Increase the blinds, the unit will a󰀨ect the air out of the air, reduce performance, and therefore do not recommend the
use of shutters. To use the shutter angle control at 15 degrees below, the distance between the control of 80mm above
• The exhaust duct is only allowed to have one elbow, otherwise it will cause bad operation of the machine
• Please install the soft connection between the unit and the air duct to prevent vibration and noise
• The exhaust air duct of each machine must be installed independently, and the exhaust hood of the machine is
prohibited to be assembled in parallel in any form, otherwise it may cause the failure of the unit.
Installation instruction

11
install snow cover
Snowfall area, please install snow cover, see the right
picture,To be una󰀨ected by the snow, it is important to set
up a high platform, which is calculated according to the
maximum amount of snow in the area. At the same time, the
outdoor external machine defrost setting change to be easy
to frost setting, detailed see the digital tube setting.
Panel disassembly instruction
Please refer to the following gure for the repair board to remove.
Installation instruction
Outlet snow cover
Inlet snow cover
A
B
C
1. Remove the screw with a screwdriver and remove the repair wrench from the bottom of the machine (or use a
self-prepared screwdriver).
Screw
Maintenance
wrench
2. Remove the screw A, B, and C by rotating the wrench in the
direction of the arrow.
3. Along the direction of the arrow, after repair
plate rotating about 40 °, the maintenance
from the xed orice plate on the right side
of card claw, can complete repair plate
disassembly.

12
Installation instruction
Install air ducting
There are no obstacles in the 2000mm above the outdoor unit; When there are obstacles in the outer plane, there must
be a pilot channel, and the wind will be free, the wind will not beshort-circuited, and the external static pressure will be
less than 110Pa. Airway design dimensions are as follows:
Channel size (pattern 1)
Channel size (pattern 2)
AV08~14IMVURA AV16~22IMVURA
AThe inner diameter 980 The inner diameter 1410
B The inner diameter750 The inner diameter 750
C≤10000 ≤10000
D E+750 E+750
E≥300 ≥300
F≥320 ≥320
AV08~14IMVURA AV16~22IMVURA
AThe inner diameter 750 The inner diameter 750
B The inner diameter 980 The inner diameter 1410
C≤10000 ≤10000
D E+980 E+1410
E≥300 ≥300
F≥320 ≥320
A
C
D
E
F
B
A
C
D
E
F
B
Note:
Before installing the wind channel, the unit should be removed from the wind protection network. At the same time, the
outdoor air tube static press is set up to "have static pressure" mode. The above is just an example, the length of the wind
tunnel should be calculated according to the shape of the wind channel.

13
Pipe connection method:
• To ensure the e󰀩ciency, the pipe should be as short as possible.
• Daub the refrigerant oil on the connector and the are nut.
• When bending the pipe, the bending semi-diameter should be as
large as possible against the pipe being broken or bent.
• When connecting the pipe, aim at the center to thread the nut by
hand and tighten it with the double spanners.
• Fastening torque please refers to "pipe specs and fastening
torque" on page 15.
• Don't let the impurity such as sand, water etc into the pipe.
Antifouling measures refer to Page 13.
Cautions in piping installation:
1. When welding the pipe with hard solder, charge nitrogen into the pipe against oxidation. The pressure gauge should
be set at 0.02MPa.Perform the procedure with nitrogen circulation. Otherwise, the oxide lm in the pipe may clog the
capillary and expansion valve resulting in accident.
2. The refrigerant pipe should be clean. If the water and the other impurity enter the pipe, charge the nitrogen to clean the
pipe. The nitrogen should ow under the pressure of about 0.5MPa and when charging the nitrogen, stop up the end of
the pipe by hand to enhance the pressure in the pipe, then loose the hand (meanwhile stop up the other end).
3. The piping installation should be executed after closing the stop valves.
4. When welding the valve and the pipe, cool down the valve with wet towel.
5. When the connection pipe and the branch pipe need to be cut down, please use the special shears and do not use the
saw.
6. When welding copper pipe, use the phosphor copper welding rod without any welding ux. (welding ux will damage
the piping system. The welding ux containing chlorine will corrode pipe, especially, the welding ux with uorin will
damage refrigeration oil.)
Pipe material and specs selection
1. Please select the refrigerant pipe of the below material.
Material: the phosphoric oxidize seamless copper pipe,
model: C1220T-1/2H (diameter is over 19.05); C1220T-0(diameter is below 15.88).
2. Thickness and specs:
Conrm the pipe thickness and specs according to the pipe selection method(the unit is with R410A, if the pipe over
19.05 is O-type, the pressure preservation will be bad, thus it must be 1/2H type and over the min. thickness.
3. The branch pipe and the gather pipe must be from Haier.
4. When installing the stop valve, refer to the relative operation instruction.
5. The pipe installation should be in the allowable range.
6. The installation of branch pipe and gather pipe should be performed according to the relative manual.
Installation procedure
A. Refrigerant pipe connection
When fastening and loosing the nut,
operate with double spanners, because
only one spanner cannot execute rmly.
If threading the nut as not aiming at the
center, the screw thread will be damaged,
further it will cause leakage.
Spanner
Connector
Nut
Spanner
Anti-fouling measures
First, clean the pipe.
Position Installation period Measures
Outdoor More than 1 month Flat the pipe end
Less than 1 month Flat the pipe end or seal with adhesive tape
Indoor Nothing to do with period

14
Installation procedure
Indoor
unit
a
Indoor
unit
d
d
a a
a a a a a
a a
a
c
b
b
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
VP4 VP4
Outdoor
unit
Outdoor
unit
Outdoor
unit
Outdoor
unit
gg g g
f
f
Outdoor gather pipe
d
d
d
d
aa a
a
a
a
c c
b
e
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
Indoor
unit
VP1 VP1 VP1
The rst branch pipe
1. Pipe "a" diameter (between indoor and branch pipe) (depends on indoor pipe)
Indoor (x100W) Gas pipe(mm) Liquid pipe(mm)
22~28 Ø9.52 Ø6.35
36~56 Ø12.7 Ø6.35
71~140 Ø15.88 Ø9.52
226~300 Ø25.4 Ø9.52
450~600 Ø28.58 Ø12.7
Pipe specication
Note:
AS072 AS092 gas pipe / liquid pipe: Ø12.7mm/6.35mm. AS182 gas pipe / liquid pipe: Ø15.88mm/9.52mm.
From the indoor to the shortest branch pipe unit≥15m, please change specications of pipe as per the table below.
①When rated refrigerating ≤5.6kW, change specications of Gas pipe/Liquid pipe to Ø15.88mm/Ø9.52mm.
②When 5.6kW ˂ rated refrigerating ˂16.8kW, change specications of Gas pipe/Liquid pipe to Ø19.05mm/Ø9.52mm.
③When rated refrigerating ˃16.8kW,change specications of Liquid pipe to Ø12.7mm.
2. Pipe "b" diameter (between branch pipes)
Note: Adjust the diameter on eld (changing pipe is needed)
Total indoor capacity after the branch pipe (kW) Gas pipe (mm) Liquid pipe (mm)
X<16.8kW Ø15.88 Ø9.52
16.8kW≤X<22.4kW Ø19.05 Ø9.52
22.4kW≤X<33.5kW Ø22.22 Ø9.52
33.5kW≤X<47.0kW Ø28.58 Ø12.7
47.0kW≤X<71.0kW Ø28.58 Ø15.88
71.0kW≤X<101.0kW Ø31.8 Ø19.05
≥101.0kW Ø38.1 Ø19.05

15
Installation procedure
3. Pipe "c" diameter (between VP and branch pipe) (depends on VP pipe)
VP Suction gas pipe (mm) HP gas pipe (mm) Liquid pipe (mm)
112B Ø15.88 Ø12.7 Ø9.52
180B Ø15.88 Ø15.88 Ø9.52
280B Ø22.22 Ø19.05 Ø9.52
4. Pipe "d" diameter (between VP branch pipes)
Total indoor capacity after the branch pipe
(kW)
Suction gas pipe
(mm)
HP gas pipe
(mm)
Liquid pipe
(mm)
X<16.8kW Ø15.88 Ø12.7 Ø9.52
16.8kW≤X<22.4kW Ø19.05 Ø15.88 Ø9.52
22.4kW≤X<33.5kW Ø22.22 Ø19.05 Ø9.52
33.5kW≤X<47.0kW Ø28.58 Ø25.4 Ø12.7
47.0kW≤X<71.0kW Ø28.58 Ø25.4 Ø15.88
71.0kW≤X<101.0kW Ø31.8 Ø28.58 Ø19.05
≥101.0kW Ø38.1 Ø31.8 Ø19.05
5. Pipe "e" diameter (main pipe, between outdoor gather pipe and the rst branch pipe)
Outdoor
capacity (HP)
Outdoor
capacity (kW)
Main pipe Enlarged main pipe
Suction gas
pipe(mm)
HP gas
pipe(mm)
Liquid
pipe(mm)
Suction gas
pipe(mm)
HP gas
pipe(mm)
Liquid
pipe(mm)
8 22.4 Ø19.05 Ø19.05 Ø9.52 Ø22.22 Ø22.22 Ø12.70
10 28.0 Ø22.22 Ø19.05 Ø9.52 Ø25.40 Ø22.22 Ø12.70
12 33.5 Ø25.40 Ø22.22 Ø12.70 Ø28.58 Ø25.40 Ø15.88
14 40.0 Ø25.40 Ø22.22 Ø12.70 Ø28.58 Ø25.40 Ø15.88
16 45.0 Ø28.58 Ø25.40 Ø12.70 Ø31.80 Ø28.58 Ø15.88
18 50.4 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
20 56.0 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
22 61.5 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
24 68.0 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
26 73.5 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
28 80.0 Ø28.58 Ø25.40 Ø15.88 Ø31.80 Ø28.58 Ø19.05
30 85.0 Ø31.80 Ø28.58 Ø19.05 Ø34.90 Ø31.80 Ø22.22
32 90.0 Ø31.80 Ø28.58 Ø19.05 Ø34.90 Ø31.80 Ø22.22
34 95.4 Ø31.80 Ø28.58 Ø19.05 Ø34.90 Ø31.80 Ø22.22
36 100.8 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
38 106.4 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
40 112.0 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
42 117.5 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
44 123.0 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
46 130.0 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
48 135.0 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
50 140.4 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
52 145.8 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
54 151.2 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
56 156.8 Ø38.10 Ø34.90 Ø19.05 Ø41.30 Ø38.10 Ø22.22
58 162.4 Ø41.30 Ø38.10 Ø19.05 Ø44.50 Ø41.30 Ø22.22
60 168.0 Ø41.30 Ø38.10 Ø19.05 Ø44.50 Ø41.30 Ø22.22

16
Installation procedure
Outdoor
capacity (HP)
Outdoor
capacity (kW)
Main pipe Enlarged main pipe
Suction gas
pipe(mm)
HP gas
pipe(mm)
Liquid
pipe(mm)
Suction gas
pipe(mm)
HP gas
pipe(mm)
Liquid
pipe(mm)
62 173.5 Ø41.30 Ø38.10 Ø19.05 Ø44.50 Ø41.30 Ø22.22
64 179.0 Ø41.30 Ø38.10 Ø19.05 Ø44.50 Ø41.30 Ø22.22
66 184.5 Ø41.30 Ø38.10 Ø19.05 Ø44.50 Ø41.30 Ø22.22
68 190.8 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
70 196.2 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
72 201.6 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
74 207.2 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
76 212.8 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
78 218.4 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
80 224.0 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
82 229.5 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
84 235.0 Ø44.50 Ø41.30 Ø22.22 Ø50.80 Ø44.50 Ø25.40
86 240.5 Ø50.80 Ø44.50 Ø25.40 Ø54.10 Ø50.80 Ø25.40
88 246.0 Ø50.80 Ø44.50 Ø25.40 Ø54.10 Ø50.80 Ø25.40
Note: When the distance from outdoor to the longest indoor is over 90m, the main pipe should be the enlarged diameter.
6. Pipe "f" diameter (between gather pipes)
Total outdoor capacity before gather pipe Suction gas pipe(mm) HP gas pipe(mm) Liquid pipe(mm)
16HP Ø28.58 Ø25.40 Ø12.70
18~28HP Ø28.58 Ø25.40 Ø15.88
30~34HP Ø31.80 Ø28.58 Ø19.05
36~56HP Ø38.10 Ø34.90 Ø19.05
58~66HP Ø41.30 Ø38.10 Ø19.05
68~84HP Ø44.50 Ø41.30 Ø22.22
86~88HP Ø50.80 Ø44.50 Ø25.40
7. Pipe “g” diameter (between outdoor and the gather pipe)
Outdoor capacity Suction gas pipe(mm) HP gas pipe(mm) Liquid pipe(mm)
8HP Ø19.05 Ø19.05 Ø9.52
10HP Ø22.22 Ø19.05 Ø9.52
12/14HP Ø25.40 Ø22.22 Ø12.70
16HP Ø28.58 Ø25.40 Ø12.70
18/20/22HP Ø28.58 Ø25.40 Ø19.05
Copper pipe selection:
Material O type pipe: Soft pipe
Pipe diameter (mm) Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05
Thickness(mm) 0.8 0.8 1.0 1.0 1.1
Material Hard pipe
Pipe diameter (mm) Ø19.05 Ø22.22 Ø25.4 Ø28.58 Ø31.8 Ø34.9 Ø38.1 Ø41.3
Thickness(mm) 1.0 1.0 1.0 1.0 1.1 1.3 1.4 1.5

17
Installation procedure
Long pipe and high drop
1. Allowable piping length and drop between indoor and outdoor
Outdoor is only one
L5
L6 L7 L8 L9
L10
L11
L12 L13 L14 L15
L16 L18 L20
L17 L19 L21
L22
V2
V1
ABCDEF
H2
H3
H
G
V3 V4
Outdoor 3
L3<10m
L1+L3<10m
L2+L3<10m
Note:
V1---V4: VP unit
A---F: indoors (coling / heating selection possible)
G---H: indoors (cooling only )
Outdoor 1
Outdoor 2
Over 200mm
Over 200mm
Below 2m Below 2m
Outdoor 3
ABCDE F G
L1
L2
L3
L4
L5
L6 L7 L8 L9
L10
L11
L12 L13 L14 L15
L16 L18 L20
L22
H2
H3
H
L17 L19 L21
V1 V2 V3 V4
The outdoor is more than one unit
When the distance between outdoors(L1, L3) is over 2m, the oil trap must be set (upright projecting pipe,
200mm high), as the gure :

18
2. Applicable range
When the pipe between the outdoor unit and its furthest indoor unit is longer than 90m, the specication of master pipe (Gas
pipe/ Liquid pipe) between outdoor unit and the rst Y joint should be upgraded for one level. For more details, please
refer to "Outdoor pipe selection table"
When the pipe between the rst Y joint and its furthest indoor unit is longer than 40m,
(1) The specication of the master pipe ( Gas pipe/ Liquid pipe) between the rst Y joint and its furthest indoor unit should
be upgraded for one level.
(2) The distance between the furthest indoor unit and the nearest one ≤ 40m.
Installation procedure
(1) The piping connecting outdoor unit must be placed horizontally or in accordance with the installation of a certain angle
(level angle less than 15 degrees), connected with a concave not allowed.
(2) All piping cannot connect the outdoor unit is higher than the height of the machine outlet (valve interface part).
3. Pipe length between outdoors
Item Model All outdoors Pipe in above gure
Single way total pipe length 1000 m (correspond length) L1+L2+L3……+L22
Single way pipe length Max. 165/190 (correspond length) L1+L3+ L5+L6+L7+L8+L9+L10
Main pipe beween outdoor to 1st branch Max.130 (correspond length) L5
Height di󰀨erence between
indoor and outdoor
Outdoor is upper Max. 40m H3
Outdoor is lower Max. 50m H3
Height di󰀨erence between outdoors (in the same
system) Within 0.5 m (better be horizontal) H1
Max. pipe length from 1st branch pipe to indoor Max. 40m L6+L7+L8+L9+L10
Height di󰀨erence between indoors Max. 15m H2
Max.pipe length between indoors and thenearest
branch pipe Max. 30m
When outdoor is only one,
Single way max. pipe length = L5+L6+L7+L8+L9+L10≤190m
Single way total pipe length = L5+L6……+L22
Proper installation Wrong installation
The lubricating oil will accumulate to the lowest outdoor
unit
Proper installation Proper installation