1. Air-cooled Modular Chiller Installation
2014 HVAC Training
Air-cooled Modular Chiller Installation
采用midea通用PPT模版, 参考《公司简介》PPT

2. Contents Unit Installation Water System Installation
Wiring Installation

3. Unit Installation 1.1 Transportation
Use rolling rods, forklift truck or crane to handle the transportation. And please note that the angle of inclination should not be more than 15º when carrying the unit, to avoid overturn of the unit.
Rolling handling: same size rolling rods are placed under the unit base, and the length of each rod must be more than the outer frame of the base for balancing the unit.
Lifting: the strength of lifting rope (belt) should bear 4 times weight of the unit. Check the lifting hook and ensure it is firmly attached to the unit, and the lifting angle should be more than 60º. To avoid damaging the unit, the contact position of the unit and lifting rope should be provided with an at least 50mm thick wood block, cloth or hard paper. It is not allowed to stand under the unit when lifting.

4. The lifting angle should be more than 60º.
Unit Installation
Lifting hook
The position should be provided with an at least 50mm thick wood block, cloth or hard paper.
The lifting angle should be more than 60º.

5. Unit Installation
Lifting bar

6. Unit Installation 1.2 Installation location
The installation location must be well ventilated place, no pollution;
Reserved enough maintenance space and drainage channel

7. Unit Installation 1.3 Installation space A B C D E ≥1500 ≥2000 ≥8000
Space (mm)

8. Unit Installation 1.4 Parallel installation space
Reserved enough space between modules, space between adjacent modules should not be less than 600mm.

9. Unit Installation
1.5 Unit base
25/30/35 kW
55/60/65 kW
130 kW

10. Unit Installation 1.6 Foundation
Install base must be strong and solid.

11. Unit Installation 1.6 Foundation
Damping devices should be used to avoid vibration.
Gasket

12. Unit Installation 1.7 Foundation
Or using rubber pad to avoid vibration

13. Water System Installation
2.1 Important notice
The relevant installation regulations should be abided with when connecting the water pipes.
The pipelines should be free of impurity, and all chilled water pipes must conform to local rules and regulations of pipeline engineering.

14. Water System Installation
2.2 Water system schematic

15. Water System Installation
2.3 Water flow switch
When system water flow rate is too low(60% of rated water flow), it outputs “stop” signal to stop the whole system to protect the chillers.
Setting screw

16. Water System Installation
2.3 Water flow switch
The target plate should be inserted to the center of the water pipe.

17. Water System Installation
2.3 Water flow switch
Distance A must be 5 times than water pipe diameter

18. Water System Installation
2.3 Water flow switch
Water flow switch can’t be installed in the corner or close to corner.

19. Water System Installation
2.4 Water pump
Install base must be strong and solid
Good vibration measures to avoid vibration and noise transport phenomena .
Pump Water shield should be mounted.
pump head and flow should be selected correctly

20. Water System Installation
2.4 Water pump
Typical installation, Check valve, filter, soft connection must be installed.

21. Water System Installation
2.4 Water pump
Typical installation, Check valve, filter, soft connection must be installed.
Filter
Soft connection
Check valve

22. Water System Installation
2.4 Water pump
Gas bubble √ ×

23. Water System Installation
2.4 Water pump
Gas bubble

24. Water System Installation
2.5 Expansion tank
Usually it’s location is 1-1.5m higher than the water system, in the water inlet side of chiller.

25. Water System Installation
2.6 Flush
All chilled water pipelines should be thoroughly flushed, to be free of any impurity, before the unit is operated. Any impurity should not be flushed into the heat exchanger.

26. Water System Installation
2.7 Filter
The evaporator should be provided with a filter with more than 40 meshes per inch at site. The filter should be installed near to the inlet port as much as possible, and do well insulation.

27. Water System Installation
2.8 By-pass valves
The by-pass pipes and by-pass valves as shown in the figure must be mounted for cleaning the heat exchanger, During maintenance, the water passage of the heat exchanger can be cut off without disturbing other heat exchangers.

28. Water System Installation
2.9 Soft connector
Use the soft connector between the inlet (outlet) water pipes, to avoid vibration.

29. Water System Installation
2.10 Cut-off valve

30. Water System Installation
2.10 Pressure gauge and thermometer
The inlet and outlet pipes should be provided with thermometer and pressure gauge.

31. Water System Installation
2.10 Pressure gauge and thermometer
Thermometer on the water-outlet side

32. Water System Installation
2.11 Electrical 2-way or 3-way valve
We recommends use the 3-way valve, If customers use 2-way valve, the rate must less than 50%.
2-way valve
3-way valve

33. Water System Installation
2.12 Key points
All low positions of the water system should be provided with drainage ports, to drain the water in the evaporator and pipe completely.
All high positions should be supplied with exhaust valves, which can be used to discharge the air in the pipe system.
The exhaust valves and drainage ports should not be under heat preservation, to facilitate maintenance.

34. Water System Installation
2.12 Key points
All chilled water pipes in the system should have under heat preservation, including inlet pipes and flanges of the heat exchanger.
When the ambient temperature is lower than 2˚C, and the chiller will stop for a long time, water inside the chiller should be drained completely. If the unit is not drained in winter, chiller’s main power should be on, and FCUs in the water system must be provided with three-way valves, to ensure smooth circulation of the water system when the anti-freezing pump is started up in winter.

35. Water System Installation
2.13 Pipe connection
Single unit (25/30/35kW)

36. Water System Installation
2.13 Pipe connection
Single unit (55/60/65kW)

37. Water System Installation
2.13 Pipe connection
Single unit (130kW)

38. Water System Installation
2.13 Pipe connection
Multi modules (25/30/35kW)

39. Water System Installation
2.13 Pipe connection
Multi modules (25/30/35kW)

40. Water System Installation
2.13 Pipe connection
Multi modules (55/60/65kW)

41. Water System Installation
2.13 Pipe connection
Multi modules (55/60/65kW)

42. Water System Installation
2.13 Pipe connection
Multi modules (55/60/65kW)

43. Water System Installation
2.13 Pipe connection
Multi modules (55/60/65kW)

44. Water System Installation
2.13 Pipe connection
Multi modules (55/60/65kW)

45. Water System Installation
2.13 Pipe connection
Multi modules (130kW)

46. Water System Installation
2.13 Pipe connection
Multi modules (130kW)

47. Water System Installation
2.14 The total water outlet temperature sensor
The temperature sensor can be moved to the other side if it is needed（both two sides have the installation hole）
Total outlet water temp. sensor is installed in the total water outlet pipe

48. Total water pipe inner diameter Total water pipe inner diameter
Water System Installation
2.14 The total water outlet pipe diameter
Capacity × units
Total water pipe inner diameter
30×1
DN40
30×2
30×3
DN65
30×4
30×5
30×6
DN80
30×7
30×8
30×9
DN100
30×10
30×11
30×12
DN125
30×13
30×14
30×15
30×16
Capacity × units
Total water pipe inner diameter
60×1
DN65
60×2
60×3
60×4
DN80
60×5
60×6
DN100
60×7
60×8
DN125
60×9
60×10
60×11
60×12
DN150
60×13
60×14
60×15
DN200
60×16
25/30/35KW
55/60/65KW

49. Total inlet and outlet water
Water System Installation
2.14 The total water outlet pipe diameter
130KW
Unit model × quantity
Total inlet and outlet water
pipe diameter
130×1
DN65
130×9
DN200
130×2
DN100
130×10
130×3
130×11
130×4
DN125
130×12
DN250
130×5
130×13
130×6
DN150
130×14
130×7
130×15
130×8
130×16

50. Wiring Installation
3.1 Address setting

51. Wiring Installation
3.2 Wired controller

52. Wiring Installation
3.2 Wired controller
Installation

53. Wiring Installation 3.3 Connection terminals
A,B,G (or F1, F2, G) are used to connect signal wire between modules
P1, P2 terminals are used to connect the main modules and wired controller

54. Wiring Installation
3.4 Multi modules connection

55. Wiring Installation
3.5 Power cable size

56. Wiring Installation 3.6 Water Pump One water pump 380V/3PH/50HZ
Contactor winding
Circuit
breaker
Water pump
Contactor
Over charge
relay
380V/3PH/50HZ
Main unit PCB
KM2
XT2
Switch

57. Wiring Installation 3.6 Water Pump Two water pump (1 standby)
Contactor winding
Circuit
breaker
Water pump
Contactor
Overcurrent relay
380V/3PH/50HZ
Main unit PCB
KM2
XT2
Switch
Contactor winding
Circuit
breaker
Water pump
Contactor
Overcurrent relay
Switch
Standby

58. Wiring Installation 3.7 Electrical Heater 380V/3PH/50HZ Circuit
Contactor winding
Circuit
breaker
Water pump
Contactor
Over charge
relay
380V/3PH/50HZ
Main unit PCB
KM2
XT2
Switch

59. The concentration of iron ion should less than <0.3ppm
Wiring Installation
3.8 Water quality requirement
Water Quality
Requirement
Silicon ion
Conductivity
Chlorine, vitriol
& calcium ion
Total rigidity
No sulfur ion
& ammonia
PH:7~8.5
Less than 500 ppm
Less than 200μV/cm(25℃)
Less than 50 ppm
Less than 30 ppm
The concentration of iron ion should less than <0.3ppm

60. Wiring Installation
3.9 The freezing point and the boiling point of the glycol liquor(The consistency of glycol for preventing freezing).
Liquor
Consistency%
Poidometer 5 10 15 20 25 30 35 40
Volumenometer
4.4
8.9
13.6
18.1
22.9
27.7
32.6
37.5
Freezing point ℃
-1.4
-3.2
-5.4
-7.8
-10.7
-14.1
-17.9
-22.3
Boiling point(100.7kpa) ℃
100.6
101.1
101.7
102.2
103.3
104.4
105.0
105.6

61. Thank you!!