Gree D Series User manual

T1/R410A/50Hz
(GC201307-I)
D SERIES MODULAR AIR-COOLED
SCROLL CHILLERS SERVICE MANUAL
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

CONTENTS
PRODUCT .....................................................................................................2
1 LINEUP ...................................................................................................................... 2
2 NOMENCLATURE ..................................................................................................... 2
3 FEATURES ................................................................................................................ 3
4 PRODUCT DATA ....................................................................................................... 4
5 OPERATION PRINCIPLE .......................................................................................... 6
CONTROL......................................................................................................8
1 OPERATION FLOWCHART ...................................................................................... 8
2 CONTROL LOGIC ................................................................................................... 10
3 CONTROLLER ........................................................................................................ 12
NSTALLATION.............................................................................................17
1 BEFORE INSTALLATION ........................................................................................ 17
2 INSTALLATION LOCATION..................................................................................... 17
3 CAUTION FOR INSTALLATION .............................................................................. 17
4 DIMENSION DATA................................................................................................... 17
5 MACHINE FOOTPRINT........................................................................................... 19
6 TYPICAL WATER PIPING DIAGRAM ................................................................................20
7 FREEZE PROTECTION .......................................................................................... 21
8 ELECTRIC WIRING WORK..................................................................................... 21
MAINTENANCE...........................................................................................28
1 ERROR LIST ........................................................................................................... 28
2 FLOW CHART OF TROUBLESHOOTING .............................................................. 29
3 REMOVALS AND REINSTALLATION...................................................................... 34
4 ROUTINE MAINTENANCE...................................................................................... 48
5 EXPLODED VIEWS AND PART LIST...................................................................... 50
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

1
D Series Modular Air-cooled Scroll Chillers
Service Manual
PRODUCT
QSPEVDU
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

2
D Series Modular Air-cooled Scroll Chillers
Service Manual
QSPEVDU
PRODUCT
1 LINEUP
Series Model Name Product
Code
Capacity
(kW/Ton) Power
Supply Refrigerant Appearance
Cooling Heating
D
LSQWRF65M/NaD-M EL01500500 60/17.06 65/18.48
380-415V,3Ph,50Hz
R410A
LSQWRF80M/NaD-M EL01500520 71/20.19 79.5/22.61
LSQWRF130M/NaD-M EL01500510 120/34.12 130/36.97
LSQWRF160M/NaD-M EL01500530 145/41.23 170/48.34
Note:1Ton =12000Btu/h = 3.517kW
2 NOMENCLATURE
LS QW R F 130 M / Na D - M
123456789
NO. Items Options
1 Product type LS- chillers
2 Compressor type QW- hermetic scroll compressors
3 Function type Default-cooling only
R-heat pump
4 Condenser type F: air-cooled
5 Nominal cooling capacity
65:60kW= 17.06 RT
80:71kW=20.19 RT
130:120kW=34.12 RT
160:145kW=41.23 RT
6 Structural design M-modular design
7 Refrigerant Default–R22
Na–R410A
8 Development number —
9 Power supply M – 380-415V,3Ph,50Hz
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

3
D Series Modular Air-cooled Scroll Chillers
Service Manual
QSPEVDU
3 FEATURES
3.1 General
D series modular air-cooled scroll chillers are well-developed products incorporated with multiple advanced
technologies. It features the low noise level, compact structure, easy operation, reliable running, and convenient
installation and service, widely used at newly built or retrofitted industrial and civil buildings in various sizes, such
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places where there are high requirements on noise level and air quality but it is troublesome to install the cooling tower.
D series modular air-cooled scroll chillers are constructed of one or up to 16 single units which may vary in
structure and in cooling capacity. The 65, 80 units have two independent refrigeration cycle and the 130,160 units have
four. The modular design is able to realize the modular system with the cooling capacity ranging from 60 to 1160kW.
3.2 Features
D series modular air-cooled scroll chillers work outstandingly by virtue of their major features stated below.
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ƹ)UHHPDVWHUXQLWGHVLJQAny single unit can operate as the master once connected with the control
panel. It overcomes the problem which would occur to the product of other manufacturer that the whole
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ƹ([FHOOHQWFRPSDWLELOLW\ Each chiller is constructed of up to 16 single units of 65NaD,80NaD or up to 8
single units of 130NaD,160NaD.
ƹ+HUPHWLFVFUROOFRPSUHVVRU Compared with other type of compressor under the same cooling load,
it has few movable components, smaller rotating torque, lower noise and vibration and higher reliability
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ƹ6XSHUSURWHFWLRQ It is equipped with the top-end microcomputer control system which is capable of
providing well-rounded protection and self-diagnosis, such as high/low pressure protection, freeze
protection, over-temperature protection, compressor overload protection, phase loss/reversal protection,
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ƹ+LJKUHOLDELOLW\ It is constructed of well-designed refrigeration parts for multiple refrigeration cycles,
adequately guaranteeing the reliable operation.
ƹ&RPSDFWVWUXFWXUH The modular design enables the compact structure, reduced volume, light weight,
HDV\KDQGOLQJDQGVKLSSLQJDQGÀH[LEOHLQVWDOODWLRQ
ƹ/RZPDLQWHQDQFHFRVW The especially design structure allows easy access and service and low
maintenance cost.
ƹ/RZQRLVH The unit runs with low noise and vibration, widely applicable for various projects.
ƹ4XLHWPRGH The unit is allowed to run in the quiet mode based on the user’s requirement, which can
not only save energy but also create a comfortable and pleasant living environment.
ƹ(FRQRP\PRGHThe unit can run in the economy mode without lessening the air conditioning effect so
as to cut down the electricity consumption.
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ƹ3RZHUIXOUHPRWHPRQLWRULQJ Gree centralized air conditioning system can be perfectly integrated to
the BMS or Gree remote monitoring system so as to realize remote control to its operation and remote
monitoring to its running parameters and alarm data etc.
Control
panel
Control
panel
Control
panel
Wiring Drawing between Modules
ƹ,QWHOOLJHQW212))FRQWURO The unit is capable of automatically turning on/off the compressor through
controlling the entering water temperature and the temperature rise rate in accordance with the change
in load so as to make the capacity of the unit perfectly match the required load and reduce to the most
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ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

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D Series Modular Air-cooled Scroll Chillers
Service Manual
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4 PRODUCT DATA
4.1 Product Data at Rated Condition
Models
Heat
Pump LSQWRF65M/NaD-M LSQWRF80M/NaD-M LSQWRF130M/NaD-M LSQWRF160M/NaD-M
Product
Code EL01500500 EL01500520 EL01500510 EL01500530
Capacity steps % 0-50-100 0-50-100 0-25-50-75-100 0-25-50-75-100
Capacity
Cooling kW 60 71 120 145
Ton 17.06 20.19 34.12 41.23
Heating kW 65 79.5 130 170
Ton 18.48 22.61 36.97 48.34
Power Input Cooling kW 21.1 25.7 42.3 53.0
Heating kW 21.0 27.0 44.4 56.0
EER W/W 2.84 2.76 2.84 2.74
COP W/W 3.09 2.94 2.93 3.04
Power Supply — 380-415V,3Ph,50Hz
Running Control —
Microcomputer Auto Control; Running Status Display; Abnormal Status Alarm
Safeties — High-low pressure protection, discharge temp. protection, motor overload protection, anti-freeze,
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Compressor
Type — Constant Speed Scroll
Starting mode — Direct starting
Quantity — 2244
Refrigerant Type — R410A
Water side
heat
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Type — 'U\([SDQVLRQ(YDSRUDWRU
:DWHUÀRZ
volume
m3/h 10.3 12.2 20.6 24.9
GPM 45.0 54.0 91.0 110.0
Pressure Drop kPa 15 20 30 35
ft.WG 4.92 6.56 9.84 11.48
0D[ZRUNLQJ
Pressure MPa 1
water in/outlet
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VSHFL¿FDWLRQ
mm DN65 DN65 DN80 DN80
Air side heat
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Type — Aluminum Fin-copper Tube
Fan type/
Number of fans —$[LDO)DQ $[LDO)DQ $[LDO)DQ $[LDO)DQ
7RWDOIDQDLUÀRZ
m3/h 2.7×1043.0×1045.4×1046.0×104
L/s 0.75×1040.83×1041.5×1041.67×104
CFM 1.59×1041.764×104 3.18×1043.528×104
Total fan
motor power kW 0.65×2 0.95×2 0.65×4 0.95×2
Sound pressure level dB(A) 70 71 72 74
Outline
Dimension
Width mm 2040 2040 2226 2226
Depth mm 1000 1000 1650 1650
Height mm 2230 2230 2230 2230
Net Weights kg 710 760 1256 1440
Operating weight kg 781 836 1382 1584
$X[LOLDU\HOHFWULFKHDWHU
power (Ref.) kW 15 15 30 30
Loading
quantity 40'GP/40'HQ — 10/10 10/10 6/6 6/6
Notes:
a.The unit is designed, manufactured, inspected and tested in accordance with GB/T18430.1-2007.
b.Parameters on the nameplate always take precedence.
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out the most feasible solution.
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

5
D Series Modular Air-cooled Scroll Chillers
Service Manual
QSPEVDU
1RPLQDOFDSDFLWLHVDUHEDVHGRQWKHIROORZFRQGLWLRQV
Item
Water side Air side
:DWHUÀRZYROXPH Leaving Water Temperature Dry-bull temp. Wet-bull temp.
m3/(h·kw) (ć/)(
ć/)( ć/)
Cooling
0.172
7/45 35/95 —
Heating 45/113 7/45 6/43
4.3 Operation Range
Water side Air side
Leaving Water Temperature Temperature Difference of Water Air on Condenser
(ć/)(
ć/)( ć/)
Cooling 5~15/41~59 2.5~6/37~43 15~45/59~113
Heating 40~50/104~122 2.5~6/37~43 -15~24/5~75
Note: when the unit is going to operate beyond the working conditions, please contact Gree for consultation.
4.4 Electric Data
Model Rated Power Supply
Compressor Fan Motor Air Switch
Qty MRC Each
(A)
NRC Each
(A) Qty. NRC Each (A)
MRC
(A)
LSQWRF65M/NaD-M
380-415V,3Ph,50Hz
2 29.1 17.6 2 1.71 63
LSQWRF80M/NaD-M 2 29.3 25.7 2 2.50 80
LSQWRF130M/NaD-M 4 29.1 17.6 4 1.71 125
LSQWRF160M/NaD-M 4 35 25.7 4 2.50 160
Notes:
05&0D[LPXPUXQQLQJFXUUHQW$
NRC: Nominal running current (A).
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

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D Series Modular Air-cooled Scroll Chillers
Service Manual
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5 OPERATION PRINCIPLE
5.1 Schematic Diagram
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ƹ5HIULJHUDWLRQ&\FOHThe low-pressure superheated refrigerant vapor from the evaporator is drawn into
the compressor through which the low-pressure vapor is compressed to hi-temperature and hi-pressure
refrigerant vapor. Then, the refrigerant vapor passes the condenser and turns to saturated or sub-
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evaporates by absorbing heat from the second refrigerant and then is drawn into the compressor again.
The second refrigerant is then transferred to where air cooling is required.
ƹ5HYHUVH5HIULJHUDWLRQ&\FOH During the reverse refrigeration cycle, a 4-way valve is used to make the
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vapor coming out from the compressor directly releases heat to the secondary refrigerant and turns to
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is drawn into the compressor again. The second refrigerant which has approached the temperature set
point is then transferred to where air heating is required.
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

7
D Series Modular Air-cooled Scroll Chillers
Service Manual
CONTROL
DPOUSPM
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

8
D Series Modular Air-cooled Scroll Chillers
Service Manual
DPOUSPM
CONTROL
1 OPERATION FLOWCHART
1.1 Cooling Operation
Energize the unit
ТОО "Everest climate" г. Алматы, Варламова 1а, тел.+7 727 230 00 10, e-mail: [email protected], сайт:www.aircon.kz

9
D Series Modular Air-cooled Scroll Chillers
Service Manual
DPOUSPM
1.2 Heating Operation
Energize the unit
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D Series Modular Air-cooled Scroll Chillers
Service Manual
DPOUSPM
2 CONTROL LOGIC
2.1 Cooling Control
2.1.1 Control to the Compressor
(1). “First On, First Off”
“First On, First Off”/“First Off, First On” control indicates the numbered compressor which is started/stopped
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(2). Temperature Drop/Rise Rate Control
The water temperature range control assisted by the temperature drop/rise rate control is capable of
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2.1.2 Freeze Protection
For each single module, when the anti-freezing temperature or the leaving water temperature is lower than
the limit value, freeze protection will work and this module stops; when the anti-freezing temperature and the
leaving water temperature go higher than the normal value, freeze protection will quit; when the anti-freezing
temperature and the leaving water temperature are between the limit value and the normal value, the module is
protected again freeze.
2.1.3 Shutdown
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pump keeps running.
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unchanged and the water pump keeps running.
2.2 Heating Control
2.2.1 Control on the Compressor
It is the same as that in selection 2.1.1.
2.2.2 Over-temperature Protection
For each single module, when the over-temperature is higher than the limit value, over-temperature
protection will work; when the over-temperature goes lower than the normal value, over-temperature protection
will quit; when the over-temperature is between the limit value and the normal value, the module is still
protected again over-temperature.
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change of the entering water temperature.
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:KHQWKHXQLWLVXQGHURYHUWHPSHUDWXUHSURWHFWLRQEXWWKHDX[LOLDU\HOHFWULFKHDWHULVQRWDOORZHGWRVWRS
WKHDX[iliary electric heater will keep working until the entering water temperature reaches the set point.
2.2.4 Shutdown
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11
D Series Modular Air-cooled Scroll Chillers
Service Manual
DPOUSPM
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pump keeps running.
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unchanged and the water pump keeps running.
2.3 Freeze Protection
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through the wired controller, the unit will be protected again freeze. Free protection is factory defaulted to be ON.
When the module is in the freeze protection, its compressor will work as per the on/off setting and also the
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2.4 Control to the Compressor
All compressors run as per the principle of “First On, First Off” and “First Off, First On”. See section 2.1 and
section 2.2.
2.5 Control to the Fan
The fan starts earlier than the compressor upon startup, and stops later than the compressor upon
shutdown. During defrosting, the fan and the 4-way valve stops. After defrosting they start again.
2.6 Control to the 4-way Valve
The 4-way valve is stopped at the cooling mode. At the heating mode, it will start after the compressor runs.
During defrosting it stops and then starts again after defrosting. It will stop later than the compressor upon shutdown.
2.7 Control to the Water Pump
When any module is required to run (incl. manual startup, timely startup, startup again freeze), water pumps
of all module starts. Then, when one module reaches the set point and is shut down, water pumps of all modules
keep running; when one module is shut down manually or timely, its water pump keeps running and will stop only
after all modules are shut down; when one module malfunctions and is shutdown, its water pump keeps running.
2.8 Control to the Electronic Expansion Valve
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2.9 Protection
2.9.1 Recoverable Protection
ƹCompressor 1/2 low pressure protection
When it is detected the low-pressure switch of compressor 1 (compressor 2) is opened compressor 1
(compressor 2) will be shut down immediately.
Meanwhile the indicating LED will light on and the error information will be displayed among the error log
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ƹCompressor 1/2 high discharge protection
When it is detected in three consecutive seconds that the discharge temperature of compressor 1
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will still run for some time.
Meanwhile the indicating LED will light on and the error information will be displayed among the error log
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2.9.2 Irrecoverable Protection
ƹCompressor 1/2 high pressure or over-current protection
When it is detected that the high pressure switch of compressor 1 (or compressor 2) is open, compressor 1
(or compressor 2) will be shut down but the fan will still last for some time.
Meanwhile the indicating LED will light on and the error information will be displayed among the error log
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12
D Series Modular Air-cooled Scroll Chillers
Service Manual
DPOUSPM
ƹFan 1/2 over-current protection
When any fan is over-current, this module unit will be shut down automatically. Meanwhile, the error information
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ƹFlow switch protection
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will be shut down automatically.
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ƹCommunication protection
When a single module unit fails to receive any signal from the wired controller, it will be shut down
automatically and then the water pump will stop.
ƹPhase loss/reversal protection
When phase loss/reversal occurs, the power supply to the main board will be cut off.
3 CONTROLLER
3.1 Wired Controller
This wired controller, especially designed for D series modular air-cooled chillers, is capable of controlling
and displaying each running parameter of the chiller and being integrated into the remote monitoring system.
3.1.1 Press Buttons and Icons on the Homepage
(1). Press Buttons
NO. Name Function description
1 Power indicator(red) the indicator is on when the Wired Controller is powered on, or otherwise it is off.
2 Run indicator(green) the indicator is on when the Wired Controller is started, or otherwise it is off.
3 Error indicator(red) The indicator is on when the unit is at fault, or otherwise it is off.
4 On/Off button For controlling unit conversion between start and stop, press the button (for 3 seconds) in stop
state to start the unit and press the button (for 3 seconds) in operation state to stop the unit.
5 Reset button Press the button to clear fault and relieve the air discharge temperature sensor locking.
6 Up selection button in menu selection, press the button to move the cursor upward or leftward;
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7 Down selection button In menu selection, press the button to move the cursor downward or rightward;
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8([LWEXWWRQ Press the button to go back to the previous menu.
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10 LCD Information display zone.
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D Series Modular Air-cooled Scroll Chillers
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(2). Display Icons on the Homepage
No. Icon Description
1 Time It indicates the current time.
2 Unit name It indicates the unit name.
3 Running mode It indicates the running mode (cooling, heating or manual defrosting)
4 On/Off mode It indicate the on/off mode, manual or timing)
5 Running status It indicates the running status, on or off.
6 Module quantity ,WLQGLFDWHVKRZPDQ\PRGXOHVWKLVV\VWHPLVFRQVLVWHGRIPD[
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D Series Modular Air-cooled Scroll Chillers
Service Manual
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3.1.2 Menu Structure of Controller
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D Series Modular Air-cooled Scroll Chillers
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3.2 Setup of Toggle Switches on the Motherboard
Four bit toggle switches are used for indicating hardware address (1~16) of modules, with module No.
displayed in turn on the panel as Module 1, Module 2, ……, Module 16. Toggle switches 1, 2, 3 and 4 are binary
code, with 1 for the lowest bit and 4 for the highest bit. Comparison drawings are as follows (Caution: The DIP
switch is allowed to be set only when the power supply is cut off and each setting shall be unique.):
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D Series Modular Air-cooled Scroll Chillers
Service Manual
INSTALLATION
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D Series Modular Air-cooled Scroll Chillers
Service Manual
NSTALLATION
1 BEFORE INSTALLATION
ƹPlease check the attached documents for the unit and accessories in accordance with the packing list.
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ƹCheck the unit and accessories for damage
ƹCheck the refrigerant charge for leakage
ƹCheck the cleanliness of the water pipes. Do not remove the protective cap of the flange before
connecting water pipes.
ƹCheck installation and operation for compliance with the required range.
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Note that protective measures shall be taken after unpacked product has gone through all check and do not
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2 INSTALLATION LOCATION
In order to guarantee the unit operates normally, installation shall be performed by the skilled serviceman
with enough knowledge of refrigeration and air conditioning. Please read this manual carefully before instillation.
ƹThe unit shall be installed outdoor where there is good ventilation and capable of withstand the weight of the unit.
ƹEnough space around the unit shall be left for ventilation, operation and service.
ƹNo obstacle is allowed above the unit.
ƹThe drainage ditch shall be prepared.
3 CAUTION FOR INSTALLATION
ƹEnsure the connection pipe and power line both are routed correctly.
ƹNoise and vibration levels shall be among the reliable range, rubber cushion shall be adopted.
ƹThe base must be constructed of cement or steel, which can bear the operation weight of the machine
and has a level surface.
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ventilation space shall be left and measures should be taken to reduce noise and vibration as much as
possible.
4 DIMENSION DATA
(1). Graph for the shape and size for LSQWRF65M/NaD-M, LSQWRF80M/NaD-M Unit:mm
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D Series Modular Air-cooled Scroll Chillers
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(2). Graph for the shape and size for LSQWRF130M/NaD-M Unit:mm
(3). Graph for the shape and size for LSQWRF160M/NaD-M Unit:mm
403
2160
1676
2226
2026(Ground bolt 4-M12)1650
1617(Ground bolt 4-M12)
339
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