Gree A Series, LSQWRF35VM/NaA-M, LSQWRF60VM/NaA-M, LSQWRF65VM/NaA-M, LSQWRF70VM/NaA-M Installation, Start-up And Maintenance Manual
A Series Inverter Modular Air-cooled Chiller (Heat Pump)
LSQWRF35VM/NaA-M、LSQWRF60VM/NaA-M
LSQWRF65VM/NaA-M、LSQWRF70VM/NaA-M
To Users
Thank you for selecting Gree’s 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 equipment should be installed, operated or maintained by the qualified
servicemen who have had specific training. During operation, all safety issues
covered in the labels, User’s Manual and other literature should be followed strictly.
This equipment 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 responsibility for their safety. Children should be supervised to ensure that
they do not play with the appliance.
(2)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.
(3)For personal injury or property loss and damage caused by improper operation such as
improper installation and debugging, unnecessary maintenance, violation of related
national laws and rules and industrial standard, and violation of this instruction
manual, etc., we will bear no liability.
(4)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 status (specify the situations before and after the error occurs).
(5)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.
(6)The final right to interpret for this instruction manual belongs to Gree Electric
Appliances Inc. of Zhuhai.
Contents
1 Safety Notices............................................................................................................ 1
2 General Introduction .................................................................................................. 6
2.1 Product Features ................................................................................................. 7
2.2 Principle Diagrams .............................................................................................. 8
3 Operation Range ....................................................................................................... 8
4 Outline Dimensions ................................................................................................... 9
5 Installation Instructions ............................................................................................ 10
5.1 Pre-check........................................................................................................... 10
5.2 Acceptance Check............................................................................................. 10
5.3 Handling and Lifting............................................................................................11
5.4 Installation Foundation and Service Space ....................................................... 12
5.5 Vibration Reduction ........................................................................................... 13
5.6 Installation of the Water System ........................................................................ 14
6 Introduction to the Display Panel............................................................................. 16
7 Electric Wiring.......................................................................................................... 16
7.1 External Wiring of the Electric Control Cabinet ................................................. 16
7.2 Specification of Power Cord and Air Switch ...................................................... 17
7.3 Wiring of the Electric Control Cabinet................................................................ 18
7.4 Filed Wiring ........................................................................................................ 18
7.5 Networking and Wiring between Units .............................................................. 20
7.6 Setup of Toggle Switches on the Motherboard.................................................. 21
7.7 Jumpers ............................................................................................................. 22
8 Commissioning and Maintenance ........................................................................... 23
8.1 Check before Startup......................................................................................... 23
8.2 Requirements on Water Quality and Cleaning .................................................. 23
8.3 Trial Run ............................................................................................................ 25
8.4 Routine Startup/Shutdown ................................................................................ 25
8.5 Maintenance to the Main Parts.......................................................................... 26
8.6 Maintenance during Long-term Downtime ........................................................ 26
8.7 Startup after Long-term Shutdown .................................................................... 26
8.8 Parts Replacement ............................................................................................ 26
8.9 Refrigerant Charging ......................................................................................... 27
8.10 Removal of the Compressor............................................................................ 27
8.11 Freeze Protection............................................................................................. 28
8.12 Rountine Maintenance..................................................................................... 28
8.13 Precautions...................................................................................................... 29
9 Troubleshooting and After-sales Service ................................................................ 30
9.1 Troubleshooting Measures ................................................................................ 30
9.2 After-sales Service ............................................................................................ 32
A Series Inverter Modular Air-cooled Chiller (Heat Pump)
1 Safety Notices
Warning:If not abide strictly, it may cause severe damage to the unit or the people.
Note:If not abide 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.
◆Safety Notices for On-site Installation
WARNING
(1)Installation should be performed by qualified servicemen who have taken
specialized training and acquired corresponding certificates in accordance with
relative laws, regulations and this manual, otherwise it would lead to damage to the
unit, water leakage, electrocution, or fire hazards etc.
(2)The unit should be installed on the smooth foundation capable of supporting the unit
and fixed with screw bolts. The foundation with inadequate strength would lead to
leakage, turn-over or personal injury or death.
(3)Special lines should be used for electric installation by qualified electricians. Lines
with inadequate capacity would lead to electrocution or fire hazards.
(4)Make sure each connector is properly tightened; otherwise it would lead to
overtemperature or fire hazards etc.
(5)When installation is finished, please check for the drainage lines, pipelines, and
electric lines to prevent water leakage, electrocution or fire hazards.
(6)This equipment should be installed where the drainage system can work well. Never
block the drain hole. Improper drainage system would lead to drainage difficulty and
make the unit suffer from malfunctions.
(7)When there is something unusual (like stinky smell) during installation or
commissioning, please cut off the main power at once and then contact the
aftersales service center. This ongoing unusual condition will damage the air
conditioning unit and lead to electrocution or fire hazards
(8)When refrigerant leaks, take corrective measures as soon as possible to prevent
oxygen depletion by increased refrigerant concentration.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
NOTE
(1)Do not install the unit where there is high-intensity magnetic field or it is highly basic
or acid or the voltage is quietly unstable.
(2)Do not install the unit where there would be leaked inflammable gas, as it would lead
to fire hazards.
(3)The outer casing of the unit should be grounded. Do not connect the grounding line
to the gas line, water line, lightning rod or communication line, otherwise it would
lead to electric shocks.
(4)Do not stand on the unit or place other object on it.
(5)Do not insert fingers or other objects into the outlet grill to prevent damage to the unit
or personal injury or death.
(6)Do not start or stop the unit by inserting or drawing out the power plug.
(7)Do not let children play with this unit.
(8)The unit should be equipped with the leakage protector which should be installed in
accordance with electric technical standards. Uninstallation or incorrect installation
would lead to electrocution. Do electric leakage detection after electric installation is
finished.
(9)Volatile liquid like thinner or gasoline would damage appearance of the unit. (Only
clean the outer casing with of the unit with soft dry cloth or wet cloth with neutral
detergent.
DANGER
(1)Do not install the unit where conditions are severe, where it is close to the hot spring,
coast or oil field, as it would lead to corrosion, electrocution or fire hazards.
Besides, do not install the unit where there are corrosive, inflammable substances
or smog, otherwise it would lead to normal operation failure, shortened service life,
fire hazard, or severe injury.
(2)Do not start the compressor by manually closing the AC contactor, otherwise it would
lead to electrocution or fire hazard.
(3)Do not misuse refrigerant, as it would lead to normal operation failure, unsatisfactory
performance, fire hazards or even explosion etc.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
CAUTION
(1)Installation should be done in accordance with this manual. Please read it manually
prior to startup or troubleshooting.
(2)Installation should be done by qualified servicemen, as incorrect installation would
lead to water leakage, electrocution or fire hazards etc.
(3)Before installation, check for all power supplies with the nameplate and check for its
safety.
(4)The unit should be grounded and there should be specialized grounding line for the
power socket to avoid of electrocution. Do not connect the groundling line to the gas
tank, water line, lightning rod, or telephone line.
(5)Only specialized accessories and parts are allowed for installation, otherwise it
would lead to water leakage, electrocution or fire hazards etc.
(6)Size of the power lines should be large enough. Only specialized power lines are
allowed for replacing the damaged ones.
(7)When power lines have been connected, install the electric box as well to avoid of
any safety problems.
(8)After all installation has been finished, take an overall check to the unit before
powering it on.
◆Safety Precautions for Usage and Maintenance
WARNING
(1)When there is something unusual (like burnt smell), cut off the power supply at once
and contact the sales agent. The ongoing unusual condition would lead to
malfunctions, electrocution or fire hazards.
(2)When refrigerant leaks, take corrective measures to prevent oxygen depletion by
increasing refrigerant concentration.
(3)Do not use or place inflammable or explosive substances near the unit.
(4)Do not do troubleshooting personally, as incorrect troubleshooting would lead to
electrocution or fire hazards. Instead, please contact GREE after-sales service
center.
(5)When the unit is charged with refrigerant, do not solder or cut any pipeline, fined
heat exchanger, shell-and-tube heat exchanger or other containers.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
NOTE
(1)Do not let the unit out of the designed application range; otherwise it would cause
the heat exchanging tube cracking, refrigerant leakage or even explosion.
(2)Do not let the cold/heat source directly act on the stored foods, plants, animals,
precision instruments, and curiosities, otherwise their quality would be degraded.
(3)Only circulating water with satisfactory water qualify are allowed for the unit, as
unsatisfactory water quality would shorten the service life of the unit or even
malfunctions.
(4)When the unit has been put into use for some time, check for security of the
installation foundation. Unstable foundation would lead to deformation or even
safety accident.
(5)Once the unit is started up, stop it at least 6 minutes later, otherwise it would shorten
the service life of the unit. Never deliberately start or stop the unit frequently.
(6)Under subzero climatic conditions, pay attention to freeze protection. When the unit
is out of use in short time, do not cut off the power supply, as freeze protection will
not act normally. When the unit is out of used in quite long time, add anti-freezing
agent to water or drain the water system, otherwise it would make the shell and
tube crack and then leak.
DANGER
(1)Do not use the fuse out of the normal range or replace it with the electric wire,
otherwise it would damage the unit or lead to fire hazards.
(2)Do not start or stop the unit directly by the power switch, as it would be likely to
cause electrocution or fire hazards.
(3)Do not change settings of safety devices; otherwise it would lead to fire hazards and
explosion.
(4)Do not operate the unit with wet hands.
(5)Do not clean the unit without cutting off the power supply, as it would lead to
electrocution or personal injury.
(6)Do not let children pull power lines or climb the unit to prevent of electrocution or
other dangers.
(7)Do not touch high-temperature parts of the compressor and refrigerant lines, as it
would lead to burns.
(8)Do not touch sharp edges and fins of the heat exchanger; otherwise it would lead to
personal injury.。
(9)Do not touch any moving part; otherwise it would lead to accidental injury.
(10)Do not stand on the unit or replace objects on it.
(11)Do not bend pipeline and retrofit the unit, otherwise it would lead to refrigerant
leakage, explosion, fire hazards or personal injury.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
CAUTION
(1)Do operate the unit in accordance with this manual and read it carefully before
startup or troubleshooting.
(2)Do turn on or off the unit with the controller.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
◆Safety Precaution for Handling of the Unit
Safety Precaution for Handling of the Unit
WARNING
(1)Please contact the contractor for handling and installation. Improper installation
would lead to electrocution or fire hazard.
(2)During installation or handling, do not let foreign matters mixed with refrigerant and
do not air trapped inside the pipe, as it would lead to increased system pressure or
explosion of the compressor.
(3)Only specialized power lines are allowed. Wiring terminals should suffer no any
external force and are fixed properly; otherwise it would lead to fire hazards.
Besides, make sure insulation of power lines always in good condition.
(4)Connection between two ends of the power lines is not allowed. When its length is
not enough, please contact the after-sales service center for customizing another
one long enough.
CAUTION
(1)Treatment of water, cleaning solution, refrigerant or other waste liquid or gas should
comply with local laws and regulations; otherwise it would lead to adverse effect to
health and environment.
(2)Do not misuse refrigerant, as it is one of the causes of fire hazard and explosion.
Precautions for Refrigerant Charging
NOTE
When charging is interrupted or finished, reinspect the unit but do not let the compressor
run into operation.
WARNING
Do not use mixture of refrigerant vapor and air or oxygen for pressurizing for fear of
explosion.
2 General Introduction
See the nameplate for the main technical data.
The all-inverter modular air-cooled chillers are capable of performing cooling all year around
with high energy efficient. It requires no cooling towers and is quite applicable to water-
deficient areas, and can be widely used at newly built or retrofitted industrial and civil buildings
in various sizes, such as, hotels, apartments, restaurants, office buildings, shopping malls,
theaters, gyms, workshops, hospitals, places where there is requirement on cooling under
ultra-low temperature, like cold storages, places where require cooling for dairy products,
foods and industrial products, and especially places where there are high requirements on
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
noise level and surrounding environment and boils and cooling towers are not allowed or hard
to be installed.
2.1 Product Features
The all-inverter modular air-cooled chillers work outstandingly by virtue of their major
features stated below..
■ Excellent compatibility：
The all-inverter modular air-cooled chillers can be constructed of multiple single units with
the same or different structure or capability (30kW, 60kW, 65kW and 70kW). For the 35kW
unit, it has only one cooling system; for the 60kW, 65kW and 70kW units, they are of two
independent systems. Up to 16 single units can be modularized, with cooling capacity ranging
from 35kW to 1104kW.
■ Comfort and energy saving：
The variable-frequency technology can quickly respond to load change and lead to
decreased water temperature fluctuation and better comfort.
■ Ultra-quiet：
The high-efficiency and low-noise fan blades and motor as well as the optimized air passage
can greatly lower operation noise of the unit. Besides, the quite mode can provide the user a
ultra-quite environment.
■ Powerful self-protection：
It is equipped with the top-end microcomputer control system which is capable of providing
well-rounded protection and self-diagnosis.
■ High reliability：
It is constructed of well-designed refrigeration parts and well-designed system, structure
and electric control, adequately guaranteeing reliable operation
■ Remote ON/OFF：
The unit can be started or stopped by the ON/OFF key operation.
■ Equilibrium running：
It indicates each compressor will run alternately so as to extend their service life.
■ Shiftwork of water pumps：
Two water pumps can work alternately with equilibrium runtime so as to extend their service
life and lower the maintenance difficulty.
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A Series Inverter Modular Air-cooled Chiller (Heat Pump)
2.2 Principle Diagrams
3 Operation Range
Please run the unit under the specified operation range as shown in the table below:
■ R410A Series
Item
Cooling
Heating
Water Side Air Side
Leaving Water
Temperature（℃）
5～20 2.5～6 –15～52
35～50 2.5～6 -20～40
Water Temperature
Difference（℃）
Ambient DB
Temperature（℃）
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