Asami AMV6-O224 User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
DC Inverter Multi VRF System
Models:
AMV6-O224
AMV6-O280
AMV6-O335
……
AMV6-O2460

To Users
Thank you for selecting our product. Please read this instruction manual carefully before
installing and using the product, so as to master and correctly use the product. In order to guide you
to correctly install and use our product and achieve expected operating effect, we hereby instruct as
below:
(1) 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.
(2) In order to ensure reliability of product, the product may consume some power under
stand-by status for maintaining normal communication of system and preheating refrigerant
and lubricant. If the product is not to be used for long, cut off the power supply; please
energize and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using environment; otherwise it may
impact the using convenience.
(4) This product has gone through strict inspection and operational test before leaving the
factory. In order to avoid damage due to improper disassembly and inspection, which may
impact the normal operation of unit, please do not disassemble the unit by yourself. You can
contact with the special maintenance center of our company if necessary.
(5) When the product is faulted and cannot be operated, please contact with our maintenance
center as soon as possible by providing the following information.
1)Contents of nameplate of product (model, cooling/heating capacity, product No.,
ex-factory date).
2)Malfunction statuses (specify the situations before and after the error occur).
(6) All the illustrations and information in the instruction manual are only for reference. In order
to make the product better, we will continuously conduct improvement and innovation. We
have the right to make necessary revision to the product from time to time due to the reason
of sales or production, and reserve the right to revise the contents without further notice.
(7) The final right to interpret for this instruction manual belongs to ASAMI.

Exception Clauses
Manufacturer will bear no responsibilities when personal injury or property loss is caused by the
following reasons:
(1) Damage the product due to improper use or misuse of the product;
(2) Alter, change, maintain or use the product with other equipment without abiding by the
instruction manual of manufacturer;
(3) After verification, the defect of product is directly caused by corrosive gas;
(4) After verification, defects are due to improper operation during transportation of product;
(5) Operate, repair, maintain the unit without abiding by instruction manual or related
regulations;
(6) After verification, the problem or dispute is caused by the quality specification or
performance of parts and components that produced by other manufacturers;
(7) The damage is caused by natural calamities, bad using environment or force majeure.

Contents
1 Safety Notices (Please be sure to abide)................................................................. 1
2 Product Introduction ................................................................................................. 5
2.1 Product Features.............................................................................................................. 5
2.2 Product List ...................................................................................................................... 5
2.3 Names of Main Parts........................................................................................................ 7
2.4 The Range of Production Working Temperature ............................................................... 8
2.5 Standard Parts.................................................................................................................. 8
3 Product Installation ................................................................................................... 8
3.1 Safety Precautions for Installing, Repairing and Moving Units .......................................... 8
3.2 Outdoor Unit Installation ..................................................................................................10
3.3 Pipeline Design................................................................................................................19
3.4 Pipeline Installation and Insulation...................................................................................26
3.5 Static Pressure Ventilation Pipe Installation .....................................................................31
3.6 Vacuum and Drying of Refrigeration System....................................................................33
3.7 Additional Refrigerant Charging.......................................................................................35
3.8 Electrical Installation........................................................................................................39
3.9 Communication Line Connection.....................................................................................44
3.10 Check Items after Installation.........................................................................................50
4 Debugging and Operation....................................................................................... 51
4.1 Preparation before Test Run............................................................................................51
4.2 Notices for Unit Debugging..............................................................................................52
4.3 Basic Introduction for Engineering Debugging.................................................................55
5 Operation Instruction .............................................................................................. 62
6 Maintenance............................................................................................................. 62
6.1 Heat Exchanger of Outdoor Unit......................................................................................62
6.2 Drain Pipe........................................................................................................................62
6.3 Precautions at the Beginning of Using Season................................................................63
6.4 Maintenance at the End of Using Season........................................................................63
6.5 Parts Replacement..........................................................................................................63
7 Troubleshooting....................................................................................................... 63
7.1 Common Malfunction and Troubleshooting......................................................................63
7.2 Error Indication................................................................................................................65
8 After-sales Service................................................................................................... 69

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1 Safety Notices (Please be sure to abide)
WARNING: If not abide them strictly, it may cause severe damage to the unit or the people.
NOTICE: If not abide them strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the operation must be prohibited. Improper operation may cause
severe damage or death to people.
This sign indicates that the items must be observed. Improper operation may cause damage
to people or property.
WARNING!
This product can't be installed at corrosive, inflammable or explosive environment or the
place with special requirements, such as kitchen. Otherwise, it will affect the normal
operation or shorten the service life of the unit, or even cause fire hazard or serious injury.
As for the above special places, please adopt special air conditioner with anti-corrosive or
anti-explosion function.
Awarning to assure that partial units shall only be connected to an appliance suitable for the
same refrigerant.
Follow this instruction to complete the installation work. Please carefully read this manual
before unit startup and service.
This unit <model xxx> is a partial unit air conditioner, complying with partial unit
requirements of this International Standard, and must only be connected to other units that
have been confirmed as complying to corresponding partial unit requirements of this
International Standard.
Installation should be conducted by dealer or qualified personnel. Please do not attempt to
install the unit by yourself. Improper handling may result in water leakage, electric shock or
fire disaster etc.
Before using the unit, please check if the pipe and wiring are correct to avoid water leakage,
refrigerant leakage, electric shock, or fire etc.
Don't climb the outdoor unit, and don't put anything on it. If you fall or turn it over, it will cause
damage.
Before performing related operations (such as maintenance, inspection, etc.) for the
equipment, the unit must be turned off and the power supply must be cut off. Moreover, use
the relevant instrument check whether the voltage at the power input terminal is zero. After
that, you can perform the operation. Otherwise it will cause electric shock or injury (the unit
has low-power standby function. Only the main control board indicator is on under standby
status).
If conducting troubleshooting or maintenance for the modular unit, all outdoor units are
required to be de-energized or energized at the same time. It's prohibited to energize or
de-energize some outdoor units.

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If anything abnormal happens (such as burning smell), please power off the unit and cut off
the main power supply, and then immediately contact ASAMI appointed service center. If
abnormality keeps going, the unit might be damaged and lead to electric shock or fire.
After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
Be sure to use the exclusive accessory and part to prevent the water leakage, electric shock
and fire accidents.
Make sure the unit can be earthed properly and soundly after plugging into the socket so as
to avoid electric shock. Please do not connect the ground wire to gas pipe, water pipe,
lightning rod or telephone line.
The leakage circuit breaker must be installed. If not, it may cause electric shock or Fire.
If refrigerant leakage happens during installation, please ventilate immediately. Poisonous
gas will emerge if the refrigerant gas meets fire.
Refrigerant gas is heavier than air and oxygen, especially in the basement. A large amount
of refrigerant leakage will cause the decrease in oxygen and then cause suffocation, which
will affect the health of people.
After all installations are completed, check whether there's refrigerant leakage.
Do not install the unit in a flammable place. Otherwise, it will cause an explosion and affect
the health of people.
Disposal of packaging, transportation materials and other parts must comply with the
relevant regulations of the local country.
NOTES!
Before installation, please check if the power supply is in accordance with the requirements
specified on the nameplate.And also take care of the power safety.
Turn off the unit after it runs at least five minutes; otherwise it will influence oil return of the
compressor.
Electrify the unit 2 hours before operation. Please switch on for 2 hours before operation. Do
not cut off the power when 24 hours short-time halting (to protect the compressor).
The air conditioner should be grounded, and the power outlet must be equipped with a
ground wire to ensure that the air conditioner is effectively grounded through the power
socket to avoid the risk of electric shock.
Under cooling mode, please don't set the room temperature too low.
When the air conditioner is installed in a small room, take the necessary measures to avoid
the concentration of the refrigerant exceeding the limit value for safety.
When the external temperature is decreased, the heating performance of the unit will be
decreased. If so, please use another heating device for heating at the same time. (When you
use a heating device with open fire in the same room, please always open the door or
window to keep the air circulation and avoid the lack of oxygen in the room.) Please do not
put the heating device with open fire at the air outlet, or put it under the air conditioner.

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When the unit is turned on for heating, it takes time for the room temperature to rise because
the unit uses hot air circulation to heat the entire room.
Open the door and window and keep good ventilation in the room to avoid oxygen deficit
when the gas/oil supplied heating equipment is used.
Volatile liquid, such as diluent or gas will damage the unit appearance. Only use soft cloth
with a little neutral detergent to clean the outer casing of unit.
Install the air conditioner in a solid place that can withstand its weight. Fully consider the
influence of strong winds, typhoons and earthquakes and reinforced installation. Improper
installation will cause the air conditioning unit to fall and then cause injury.
Please use the electric wire with specified specifications. Electrical installation work must
comply with local laws and regulations. Insufficient capacity or improper electrical operation
can cause electric shock or fire.
All electric wires must be confirmed to be connected well so that the wiring terminals and
electrical wires are not pulled by external force. Improper installation may cause fire.
After connecting the power cord, please fix the electric box cover properly in order to avoid
accident.
After confirming that the unit's power is off, you can touch the electrical components of the
unit, otherwise it will cause electric shock.
Do not modify the unit protection settings. If a pressure switch, end switch or other protective
device is short-circuited and forced to operate, it may cause a fire or explosion.
When installing the unit, make sure that the connection pipe is securely connected before
starting up the compressor. If the compressor is started up before the connection of the
connecting pipe is completed and the shut-off valve is opened, mixed air will cause the
system pressure to rise, which may cause compressor bursting accident and injury.
Heat exchanger fins are sharp. You may be injured if used it incorrectly. Please wear the
gloves to avoid injury.
Do not directly touch the refrigerant pipes during the operation and when the operation is
finished just now, including refrigerant pipes, compressors, and other refrigerant circulation
pipes. These pipes are hot and cold. It will scald and frostbite if directly contacts them. To
avoid injury, please wait until the pipes reach to normal temperature. Please wear gloves
when you must touch it.
Improper installation of drain pipes can result in water leakage and poor function.
R410A is a mixture. The refrigerant must be filled from the liquid pipe. If the refrigerant is
filled from the gas pipe, the composition of the refrigerant will change and the system can't
operate normally.
Take adequate measures to prevent small animals from making nests in the unit. Once small
animals touch electrical components, it may cause malfunction or fire hazard. Remind
customers to clean around the unit.

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The installed indoor unit, outdoor unit, power cord and connection wire must be at least 1m
away from the TV or radio to avoid image interference or noise. If the radio wave is strong,
sometimes even if the distance is more than 1 m, it is not enough to avoid interference.
When disassembling the unit, handling refrigerants, oil and other components of the unit, it
must be in accordance with the relevant national/continental regulations.
Air conditioning units or heat pump units are appliances which are not easily accessible to
the public.
The design pressure is 4.3 MPa. The thickness of pipe for installation should comply with the
relevant national/continental regulations.
After the power cord is installed, please note to ensure that the power cord should not direct
touch the sheet metal of electric box.
NEVER TO DO
Never start up or shut off the air conditioner by means of directly plug or unplug the power
cord.
Do not insert fingers or objects into air outlet/inlet grille.
Do not operate this unit with wet hands.
Never short-circuit or cancel the pressure switch to prevent unit damage.
Never fail to comply with the nitrogen charge requirements. Charge nitrogen when welding
pipes.
Never spray or flush water towards unit, otherwise malfunction or electric shock may
happen.
Never allow children to play around or on the top of the unit, otherwise injury may happen.
MUST TO DO
User is not allowed to repair the unit. Fault service may cause electric shock or fire accidents.
Please contact ASAMI appointed service center for help.
Do not expose the unit to the moist or corrosive circumstances.
Do not directly touch the refrigerant leaking from the refrigerant pipe connection place, as it
may cause frostbite.
Please firstly connect the wired controller before energizing, otherwise wired controller can't
be used.
The power cable diameter should be big enough. If the power cord and connection wire are
damaged, they must be replaced with the special cables.
Once all installations are completed, check whether there is refrigerant leakage.

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2 Product Introduction
2.1 Product Features
ASAMI Multi VRF Modular System adopts inverter compressor technology. According to change
the displacement of compressor, stepless capacity regulation within range of 10%-100% can be
realized. Various product lineup is provided with capacity range from 22.4kW to 246kW, which can be
widely used in working area and especially applicable to the place with variable load change.
2.2 Product List
2.2.1 Combinations of Outdoor Units
Model AMV6-O224
AMV6-O224 ◆
AMV6-O280 ◆
AMV6-O335 ◆
AMV6-O400 ◆
AMV6-O450 ◆
AMV6-O504 ◆
AMV6-O560 ◆
AMV6-O615 ◆
AMV6-O680 ◆◆
AMV6-O730
◆◆
AMV6-O784 ◆◆
AMV6-O840◆◆
AMV6-O895 ◆◆
AMV6-O950◆◆
AMV6-O1015◆◆
AMV6-O1065 ◆◆
AMV6-O1119 ◆◆
AMV6-O1175 ◆◆
AMV6-O1230
◆◆
AMV6-O1290◆◆◆
AMV6-O280AMV6-O335AMV6-O400AMV6-O450AMV6-O504AMV6-O560AMV6-O615

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Model
AMV6-O1345 ◆◆◆
AMV6-O1400 ◆◆◆
AMV6-O1455 ◆◆◆
AMV6-O1510◆◆◆
AMV6-O1565 ◆◆◆
AMV6-O1630 ◆◆◆
AMV6-O1680◆◆◆
AMV6-O1734 ◆◆◆
AMV6-O1790◆◆◆
AMV6-O1845 ◆◆◆
AMV6-O1905◆◆◆◆
AMV6-O1959 ◆◆◆◆
AMV6-O2015◆◆◆ ◆
AMV6-O2070◆◆◆◆
AMV6-O2125◆◆◆◆
AMV6-O2180◆◆◆◆
AMV6-O2245◆◆◆◆
AMV6-O2295 ◆◆◆◆
AMV6-O2349 ◆◆◆◆
AMV6-O2405 ◆◆◆◆
AMV6-O2460 ◆◆◆◆
NOTE!
means a basic module.
AMV6-O224AMV6-O280AMV6-O335AMV6-O400AMV6-O450AMV6-O504AMV6-O560AMV6-O615

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2.2.2 Combinations of Indoor and Outdoor Units
(1) The following table indicates the number of IDU for ODU：
ODU model Max number of connectable
IDU (unit)
ODU model Max number of connectable
IDU (unit)
AMV6-O224 13 AMV6-O1400 66
AMV6-O280 16 AMV6-O1455 69
AMV6-O335 19 AMV6-O1510 71
AMV6-O400
23
AMV6-O1565
74
AMV6-O450 26 AMV6-O1630 77
AMV6-O504 29 AMV6-O1680 80
AMV6-O560 33 AMV6-O1734 80
AMV6-O615 36 AMV6-O1790 80
AMV6-O680
39
AMV6-O1845
80
AMV6-O730 43 AMV6-O1905 80
AMV6-O78446 AMV6-O1959 80
AMV6-O840 50 AMV6-O2015 80
AMV6-O895 53 AMV6-O2070 80
AMV6-O950
56
AMV6-O2125
80
AMV6-O101559 AMV6-O2180 80
AMV6-O1065 63 AMV6-O2245 80
AMV6-O1119 64 AMV6-O2295 80
AMV6-O1175 64 AMV6-O2349 80
AMV6-O1230
64
AMV6-O2405
80
AMV6-O129064 AMV6-O2460 80
AMV6-O1345 64 —— ——
(2) The total capacity of indoor units should be within 50%~135% of that of outdoor units.
(3) When any one of the indoor units receives the operation command, the outdoor unit starts
running according to the required capability; when all indoor unit stops running, the outdoor
unit stops operation.
2.3 Names of Main Parts
Fig. 2.3.1

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2.4 The Range of Production Working Temperature
——
Cooling
Heating
Ambient temperature
-15℃*~55℃DB -30℃~24℃DB
Indoor temperature
14℃~25℃WB 15℃~27℃DB
Indoor humidity
≤80%
*Note: Cooling at -15~-5℃is conditional. Please inquire our engineers for more information.
Generally, the lowest operating temperature for cooling is -5℃.
When the indoor units are all VRF fresh air processor, the unit operating range is as follows:
Cooling Ambient temperature: 16℃~45℃
Heating Ambient temperature: -7℃~16℃
NOTE!
If exceeding the temperature range for working, the product may be damaged, which is not within
the warranty range.
2.5 Standard Parts
Please use the following standard parts supplied by ASAMI.
Parts for Outdoor Unit
Number Name Picture Quantity Remarks
1 Owner's Manual 1 ——
2 Wiring (match
with resistance) 1
Must be connected to
the last IDU of
communication
connection
3 L-shape pipe 1 Used for connecting
pipes
3 Product Installation
3.1 Safety Precautions for Installing, Repairing and Moving Units
(1) The unit should not be installed in places with high environmental pH, high voltage
fluctuations, vehicles and ships.
(2) Do not touch the fins of the heat exchanger. Improper touch can cause damage or injury.
(3) Do not mix any substances except the refrigerant when installing or moving the refrigerant
circuit, and do not leave any air in the pipe. If air or other substances are mixed in the
refrigerant circuit, the system pressure will rise and it will cause compressor explosion.
(4) Do not charge the refrigerant other than the specified one when installing or moving the unit.
Otherwise, it may cause problems such as poor operation, malfunction, mechanical fault,
etc., and even cause major safety accident.
(5) When moving or repairing the unit, be sure to use the pressure gauge. First, perform the
cooling operation, and then completely close the high pressure side valve (liquid valve).
When the pressure gauge reads 0~0.05MPa, completely close the low pressure side valve
(air valve), and then immediately stop operation and cut off the power.
(6) When recovering the refrigerant, it is necessary to ensure that the connection pipe can be
disassembled only after the liquid valve and the air valve are completely closed and the

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power is turned off. If disassembling the connection pipe when the power hasn't been cut off
and the compressor still running, the air will be mixed into the system and then the pressure
will rise, which will cause compressor explosion.
(7) When installing the unit, make sure that the connection pipe is securely connected before
turning on the compressor. If the compressor is turned on before the connection of the
connection pipe is completed and the shut-off valve is opened, the air will be mixed into the
system and then the pressure will rise, which will cause compressor explosion.
(8) Wiring between indoor unit and outdoor unit must be properly connected by adopting the
specified electric wires and the terminals should be fixed well and not affected by external
forces. Poor connection or fixing may cause a fire accident.
(9) No connection is allowed in the middle of the wire. When the length of the connection wire is
not enough, please contact the designated service store to re-equip a dedicated electric wire
with sufficient length.

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3.2 Outdoor Unit Installation
3.2.1 Product Size Drawing
The product photos are only for reference. Please refer to the actual product.
Outline and Physical Dimension of AMV6-O224,AMV6-O280,AMV6-O335
Unit: mm
Fig. 3.2.1

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No. Name
Pipe diameter
AMV6-O224 AMV6-O280 AMV6-O335
①
Gas pipe
Φ19.05
Φ22.2
Φ25.4
②
Liquid pipe
Φ9.52
Φ9.52
Φ12.7
③Pipe and wiring passing hole
(L×W) 196×69 196×69 196×69
④
Hoist hole
Φ50
Φ50
Φ50
Outline and Physical Dimension of AMV6-O400,AMV6-O450,AMV6-O504，
AMV6-O560，AMV6-O615 unit.
Unit: mm
Fig. 3.2.2

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No. Name
Pipe diameter
AMV6-O400 AMV6-O450
①
Gas pipe
Φ25.4
Φ28.6
②
Liquid pipe
Φ12.7
Φ12.7
③Pipe and wiring passing hole
(L×W)
234×69 234×69
④
Hoist hole
Φ50
Φ50
No. Name
Pipe diameter
AMV6-O504 AMV6-O560 AMV6-O615
①
Gas pipe
Φ28.6
Φ28.6
Φ28.6
②Liquid pipe Φ15.9 Φ15.9 Φ15.9
③Pipe and wiring passing hole
(L×W)
234×69 234×69 234×69
④
Hoist hole
Φ50
Φ50
Φ50
3.2.2 Select Installation Position
Conditions for selecting the installation position:
(1) Install the unit at a place where is adequate to withstand the weight of the unit and make
sure the unit would not shake or fall off.
(2) Fully consider the influence of strong winds, typhoons and earthquakes when selecting the
installation site, and strengthen the installation.
(3) The influence of flammable, explosive, corrosive gases or exhaust gases should be avoided.
(4) Ensure that there is a certain space for heat exchanging and maintenance, so that the
ventilation is smooth and the running is reliable.
(5) Outdoor units and indoor units should be as close as possible to minimize the length and
angle of the cooling pipes.
(6) Do not allow children to approach the unit. Preventive measures should be taken to prevent
children from contacting the unit.
(7) The unit should not be installed in places with high environmental pH or high voltage
fluctuations, and places such as vehicles and ships.
(8) Do not install the unit at the place where is close to the equipment that generates
electromagnetic waves. Electromagnetic waves can affect the control system and cause
fault.

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3.2.2.1 Take Seasonal Wind into Consideration When Installing the Outdoor Unit
(1) Anti-monsoon installation requirements for unit not connecting exhaust duct.
When the exhaust duct is not connected, a protective cover should be installed according to the
seasonal wind circumstances.
NOTE!
The photo is only for reference. Please refer to the installation locale.
Fig. 3.2.3
(2) Anti-monsoon installation requirements for unit connecting exhaust duct:
Fig. 3.2.4

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3.2.2.2 Take Snow into Consideration When Installing the Outdoor Unit
When the unit is installed, the snow should be taken into consideration for the height of the base.
NOTE!
The photo is only for reference. Please refer to the installation locale.
Fig. 3.2.5

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3.2.3 Installation Space Requirements
The installation space of the unit should consider the maintenance space of the unit and the
ventilation of the unit. Select an installation method according to the actual situation.
Fig.3.2.6
Unit：mm
Status
A+B+C+D
A+B
Status 1
a≥300
b≥100
c≥100
d≥500
a≥300
b≥300
Status 2
a≥300
b≥100
c≥100
d≥500
e≥100
a≥300
b≥300
e≥400
Status 3
a≥300
b≥100
c≥100
d≥500
e≥200
f≥600
——

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Status
A+B+C+D
A+B
Status 4
a≥300
b≥100
c≥100
d≥100
e≥200
f≥500
——
Status 5
a≥300
b≥500
c≥100
d≥500
e≥200
f≥900
——
NOTE!
(1) The installation space shown above is based on the cooling operation when the outdoor
temperature is 35℃. If the outdoor temperature exceeds 35℃or the heat load is large, and
all outdoor units are operating at an excess capacity, the space at the suction side should be
increased.
(2) When disassembling or installing the unit, the operation may be affected by obstacles, and
the distance from the unit to the wall surface may be appropriately increased.
(3) When two or more units are installed and placed, the operation may be affected by the
adjacent units. The distance between the two adjacent units is “e” ≥ 100mm.
Unit：mm
Fig. 3.2.7
(4) When the unit is installed in place around by walls, the height of left and right side walls is
not limited; the height of air inlet side wall is below 500mm, and the height of front side wall