1. Water-cooled chiller products
Climate solution for green environment !
Nicholas

2. Contents Centrifugal Chiller Flooded Type Screw Chiller
DX Type Screw Chiller
Screw Chiller with Heat Recovery

3. Product line-up Centrifugal Midea Water Cooled Chiller
Chiller Products
Centrifugal
Chiller
Flooded Type
Screw Chiller
DX Type
Screw Chiller
Heat Recovery
Screw Chiller

4. Centrifugal Chiller Centrifugal chiller Refrigeration System
Introduction
Features & Benefits
Refrigeration System
Control System
Let’s begin with first aspect. Indoor unit installation.

5. Centrifugal Chiller Introduction LC 1000 M LCM Series Smart Star
“Smart Star” Chiller
Nominal Cooling Capacity:1000RT
350R-1500RT single head
1500RT-2000RT dual heads
380V/6kV/10kV 50Hz
R134a
Centrifugal Chiller Refrigerant:R134a
Size
Cooling Capacity (RT)
Small
350,400,450,500,550,600
Middle
650,700,750,800,850,900,950,1000,1100,1200
Big
1300,1400,1500
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

6. Centrifugal Chiller Introduction
Applicable Ambient temp. range: 20 ～ 43 ℃
Unit operation range:
Min.
Max.
Evaporator
Inlet water temp. ℃ 8 18
Outlet water temp. 5 15
Condenser 19 33 22 41
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Maximum chilled water inlet/outlet Temp. difference: 7 ℃

7. Centrifugal Chiller Introduction Ordering instruction : Standard:
50 Hz ,380V Wye-Delta starter, 350～1300RT(1230 ～ 4572Kw)
50Hz,10Kv, 600～1500RT(2110 ～ 5276Kw)
R134a
Single head
50Hz 400/415V need special customize.
50Hz 380V RT can customize VSD start.
6KV for cooling capacity above 600RT can be customized.
60Hz for cooling capacity above 600RT need special customize.
Large temperature difference (9-12 ℃) can be customized.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

8. Environmental Friendly R134a
Centrifugal Chiller
Features & Benefits
Environmental Friendly R134a
Chlorine-free, long-term solution
Non-ozone depleting potential
Lowest toxicity and flammability rating
High Reliability
Operate above atmospheric pressure
Single-stage ,lessen moving part
Refrigerant cooled hermetic motor
100% Factory Run-Tested
High efficiency
Advanced capacity adjustment strategy
Latest heat transfer surface
10～100% Capacity adjustment
Hermetic Motor
Lower inrush current
Smaller and lighter than open motors
No need AC for the mechanical room.
Modular Construction
Easy for container load.
Easy for transportation and loading
Eliminate access problem in the jobsite
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

9. Keyless impeller coupling Low Sound and Vibration
Centrifugal Chiller
Features & Benefits
Keyless coupling
Keyless impeller coupling
Eliminates stress concentration
Longer life span
Patent design (ZL )
Low Sound and Vibration
Special engineered gearing
Double soundproof gearbox structure
Optimized impeller and tunnel design
Excellent oil system
External oil cooler and oil filter, easy to do maintenance and replacement.
High reliability
Unmatched oil reclaim system
Capacity Adjustment
IGV work together with moveable diffuser
High part load efficiency
Patent design (ZL )
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

10. Centrifugal Chiller Refrigeration system Cooling Tower Condenser
Compressor
Terminal
Evaporator
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Orifice

11. Centrifugal Chiller Refrigeration system Compressor Moveable Diffuser
High Oil Tank
Motor Rotor
Variable Inlet Guide Vanes
Motor Shaft Thrust Bearing
Balance Pipe
Bull Gear
Motor Stator
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Impeller
Pinion Thrust Bearing
Bull Gear Journal Bearing
Spraying Pipe
Oil Seal
Pinion Shaft
Labyrinth Seal

12. Centrifugal Chiller Refrigeration system IGV and diffuser Vanes
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Vanes
Diffuser
Inlet guide vanes plus moveable diffuser lead to stepless capacity range from 10% to 100% and avoid unit surge, also the construction was awarded by State intellectual property office of P.R.China(No.:ZL ).

13. Evaporator and condenser
Centrifugal Chiller
Refrigeration system
Evaporator and condenser
Evaporator
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Condenser
Latest heat exchanger surface.
Fouling factor: 0.086m2 ·℃/kW (0.0005ft2·℉·hr/Btu) (0.0005FPS)
Water side design pressure:1.0Mpa. Higher pressure can customize

14. Centrifugal Chiller Refrigeration system Throttling orifice Condenser
Evaporator
Throttle Orifice
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Throttle Orifice
Oil Reclaim Device
When the high pressure liquids flow through orifice, the liquids’ pressure and temperature will be decreased.

15. Centrifugal Chiller Refrigeration system Oil reclaim device
High efficiency oil reclaim system separates oil from mixture completely and returns oil back to compressor.
No.
Valve
Process
K2 and K3 K4 K6 K7 K8 K9 1
Manual
Separation of refrigerant and oil 〇 ×
Oil reclaim △ 2
Automatic 3
When oil reclaim system not used
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Note：〇：on ×：off △：less open K1、K5、K10 keep open

16. Centrifugal Chiller Control System Control cabinet Touchable screen
Emergency
button
Ventilation
Fan
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

17. Centrifugal Chiller Control System Control cabinet Air switch Power
Current
transmitter
Power
supply
PLC
Plug
Rely
Air switch
Transmission
Modular
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Fan
Wire terminal
To Earth

18. Centrifugal Chiller Control System Starter Standard Optional
Star-Delta
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Optional
Auto Transformer
Across the line
VSD

19. Centrifugal Chiller Control System Touch screen Welcome page
After power on, enter the welcome page:
1.Press “Enter” ,input the password, if right, goes into the main page
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

20. Centrifugal Chiller Control System Touch screen Main page
Display chiller running condition and other function menu
Chiller running condition
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Function menu

21. Centrifugal Chiller Control System Touch screen
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

22. Centrifugal Chiller Control System Network control
Communication by RS485
1:1 Host computer system
1:N Host computer system
RS 485
RS485
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Max. 32 units/network
Communication distance:500m

23. Flooded Type Screw chiller
Introduction
Features & Benefits
Refrigeration System
Control System
Let’s begin with first aspect. Indoor unit installation.

24. Flooded Screw Introduction LS B LG 365 M C F 104-235RT,Single head
RT,Dual heads
380V/400V/415V
50Hz/60Hz R134a LS B LG
365 M C F
Flooded type
Refrigerant type
C R134a; Omit for R22
Design sequence code
Nominal cooling capacity (kW)
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Compressor structure type
LG：Screw type compressor
Compressor structure type
B：semi-hermetic
Water-cooled chiller

25. Flooded Screw Introduction Cooling capacity:
Cooling capacity(KW)
Single head
340,400,455,540,690,720,825
Dual head
915,1000,1110,1200,1300,1385,1450
Applicable Ambient temp. range: 20 ～ 43 ℃
Unit operation range:
Chilled water outlet temp.
Cooling water inlet temp.
5～15℃
20～35℃
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Maximum chilled water inlet/outlet Temp. difference: 7 ℃

26. Flooded Screw Introduction Ordering instruction : Standard: 50 Hz 380V
R134a
Wye-Delta starter
4 steps capacity adjustment(25% 50% 75% 100%)
104～425RT(340 ～ 1450Kw)
50Hz 400/415V can be customized.
60Hz need special customize.
Orifice plus EXV can be customized.
Open type compressor for large cooling capacity (above 500RT)can be customized.
Stepless capacity adjustment can be customized.
Large temperature difference (9-12 ℃) can be customized.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

27. User-friendly Operation Interface Twin-Rotor Screw Compressor
Flooded Screw
Features & Benefits
High Efficiency
Flooded type evaporator
Finned heat exchanger tube
25%,50%,100% capacity control or stepless
Environmental
Friendly R134a
Chlorine-free, long-term solution
Non-ozone depleting potential
Lowest toxicity and flammability rating
Reliability
serviceability
100% run-tested for high reliability
Orifice plus solenoid valve to throttling
Flooded evaporator for easy cleaning
Simplified field wiring for easy installation
User-friendly Operation Interface
PLC control
Graphical display
Simple operation
Twin-Rotor Screw Compressor
Advanced 5-6 asymmetry dentiform rotors
Each part is well-proportioned and none-gap matching
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

28. Construction —Single head
Flooded Screw
Refrigeration System
Construction —Single head 7 8 9 1
Compressor 2
Oil separator 3
Evaporator 4
Condenser 5
Throttle valve 6
Oil filter 7
Control cabinet 8
Cut valve 9
Safety valve 1 2 3 4
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit; 5 6

29. Construction —Dual head
Flooded Screw
Refrigeration System
Construction —Dual head 6 7 8 1
Oil separator 2
Evaporator 3
Condenser 4
Throttle valve 5
Oil filter 6
Control cabinet 7
Cut valve 8
Safety valve 1 2 3
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit; 5 4

30. Flooded Screw Refrigeration System Refrigeration cycle
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

31. Flooded Screw Refrigeration System Compressor Service valve
Oil separator
Motor cable box
Squirrel-cage motor
Suction port
Capacity adjustment
system
High precision SKF/FAG
zero clearance
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Capacity
adjustment
slide valve
5-6 Asymmetry
dentiform
Injector joint
Oil filter

32. Flooded Screw Refrigeration System Oil separator
The Oil Separator comes from MANN Germany with reliable quality. The oil content in the gas can be controlled below 3ppm.The oil-gas separating amount is double of other products. The large oil filtering area reduces refrigerant flux speed, and has better separating effect and long lifespan by the secondary reflux technology adopted.
The main purpose to add the external oil separator is to improve the separating efficiency and guarantee good lubrication.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Internal oil separator
External oil separator

33. Flooded Screw Refrigeration System Evaporator DX evaporator
Flooded evaporator
DX evaporator
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Midea Screw Chiller is equipped with high efficiency shell and tube evaporator that are constructed by seamless steel tube with anti-corrosive treatment.
The design working pressure for evaporator is1.0MPa, higher pressure vessel can be customized.

34. Flooded Screw Refrigeration System Condenser Refrigerant inlet
Water outlet
Water inlet
Refrigerant outlet
Shell and tube type with refrigerant in the shell and water in the tube . Water side designed pressure is 1.0Mpa. Higher pressure can be customized
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

35. Capacity adjustment—standard
Flooded Screw
Refrigeration System
Capacity adjustment—standard
4-stage adjustment SV
Status
SV14
(NC)
SV15
SV16(NC)
100%
OFF
75% ON
50%
25%(startup) On
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Oil is supplied by pressure difference, it should be higher than 1.5 bar.
ON: energize, OFF: de-energize

36. Capacity adjustment—optional
Flooded Screw
Refrigeration System
Capacity adjustment—optional
50%~100% stepless adjustment SV
Status
SV14
(NO)
SV15
(NC)
Startup ON
Loading
OFF
Unloading
Holding
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

37. Flooded Screw Control System PLC
Function: The core component of the whole control system, PLC controls the chiller by checking those analog signals such as the outer protection input , temperature , pressure, control signal of the touch screen.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

38. Flooded Screw Control System Power protection
Function: Inspect the voltage range, phase sequence; to protect the compressor by
checking the quality of power .
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

39. Flooded Screw Control System Pressure switch
Position: Right side of control cabinet. At the back of the High/Low pressure gauge.
Function：Make sure the discharge and suction pressure in the safe range.
Reset button
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
High pressure
switch
Low pressure
switch

40. Flooded Screw Control System Water flow switch
Position: When installing the water flow switch, need 5 times of diameter away from any bend and the diameter of the pipe must be the same as chiller inlet or out .
Function：Check whether the water system works normal or not , to protect the chiller from being damaged due to lack of water.
Notice: Please check the water flow direction before installing the water flow switch. It’s a safety switch, cannot be used to start /stop the chiller.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

41. Flooded Screw Control System Start cabinet KM1 KM2 KM3
Wiring terminals
Contactors: Used for
Y- Δ transition
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Y connection:
KM1 and KM3 ON
Δ connection:
KM1 and KM2 ON
KM1
KM2
KM3

42. Flooded Screw Control System Touch screen
After the touch screen and the control system is power on, enter the welcome interface.
Press anywhere of the welcome page ,then enter the main page.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

43. Flooded Screw Control System Touch screen Dispaly： Buttons:
Running status of the chiller/Date and time.
Buttons:
1.start/stop 2.System setting 3.alarm
4.Current 5.Parameter check 2 3 4
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit; 5 1

44. Flooded Screw Control System Touch screen
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

45. DX type screw chiller DX Type Screw Chiller Features & Benefits
Introduction
Features & Benefits
Let’s begin with first aspect. Indoor unit installation.

46. DX screw Introduction LS B LG 130 M 37RT-245RT Single stage
275RT-488RT Dual stage
380V/400V/415V
50Hz/60Hz R22 LS B LG
130 M
Design series code
Nominal cooling capacity (kW)
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Compressor structure type
LG:Screw type compressor
Compressor structure type
B:semi-hermetic
Water-cooled chiller

47. DX screw Introduction Cooling capacity:
Cooling capacity(KW)
Single head
150,190,270,320,400,485,570,630,740,860
Dual head
970,1060,1145,1260,1370,1490,1620,1720
Applicable Ambient temp. range: 20 ～ 45 ℃
Unit operation range:
Chilled water outlet temp.
Cooling water inlet temp.
5～15℃
20～35℃
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Maximum chilled water inlet/outlet Temp. difference: 7 ℃

48. DX screw Introduction Product order instruction : Standard: 50 Hz 380V
Wye-Delta starter
4 steps capacity adjustment(25% 50% 75% 100%)
37～488RT(150 ～ 1720Kw)
50Hz 400/415V can be customized.
60Hz need special customize.
R134a can be customized.
Stepless capacity adjustment can be customized.
Large temperature difference (9-12 ℃) can be customized.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

49. DX screw Features & Benefits Matured control logic
serviceability
Reliability
Matured control logic
No oil recovery problem
100% run-tested for high reliability
Simplified field wiring for easy installation
User-friendly Operation Interface
PLC controller
Graphical display
Simple operation
Twin-Rotor Screw Compressor
Advanced 5-6 asymmetry dentiform rotors
Each part is well-proportioned and none-gap matching
Easy and fast installation
The unit can be placed in service only after being connected with power and water supply in the jobsite
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

50. Heat Recovery Screw Chiller
Let’s begin with first aspect. Indoor unit installation.

51. Heat recovery Introduction H LS B LG 130 M Water-cooled chiller
40RT-245RT Single stage
275RT-488RT Dual stage
380V/400V/415V
50Hz/60Hz R22 LS B LG
130 M H
Heat recovery type
Design series code
Nominal cooling capacity (kW)
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Compressor structure type
LG Screw type compressor
Compressor structure type
B semi-hermetic
Water-cooled chiller

52. Heat recovery Introduction Cooling capacity:
Cooling capacity(KW)
Single head
150,190,270,320,400,485,570,630,740,860
Dual head
970,1060,1145,1260,1370,1490,1620,1720
Applicable Ambient temp. range: 20 ～ 45 ℃
Hot water temperature:
In a one way system hot water temperature can reach 45℃.
In a circulate system hot water temperature can reach 50℃ or even higher.
Recovery heat:30% of cooling capacity.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

53. Heat recovery Introduction Product order instruction : Standard:
50 Hz 380V
Wye-Delta starter
35～40℃ hot water temperature
4 steps capacity adjustment(25% 50% 75% 100%)
40～488RT(150 ～ 1720Kw)
50Hz 400/415V can be customized.
60Hz need special customize.
Stepless capacity adjustment can be customized.
100% heat recovery can be customized.
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;

54. Beijing Capital Airport
Reference projects
Beijing Capital Airport
East Building
West Building
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Terminal 3 of the Beijing Capital International Airport, China
4 units 1000RT Centrifugal Chiller
6 units 700RT Centrifugal Chiller
2 units 500RT Centrifugal Chiller
1 units 350RT Screw Chiller

55. Reference projects Exhibition Hall
Shanghai Expo Exhibition Hall A09 and A10
5 units of 550RT 10KV High voltage centrifugal chiller

56. Reference projects Ramada Hotel Ramada Hotel ,Foshan, China
When install the indoor unit ,we need to pay attention to some points as below :
We’d better to use plumb bob to determine the location of indoor unit;
Ramada Hotel ,Foshan, China
2 units 800RT centrifugal chiller
1 units 500RT centrifugal chiller
1 units 1390KW screw chiller

57. Thank you!