MDV MDC-SS35/RN1L, MDC-SS65/RN1L, Aqua Tempo Super, MDC-SS80/RN1L, MDC-SS130/RN1 User Manual

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Content i

Content

1．Nomenclature ................................................................. 2

2．Product Lineup ............................................................... 2

3. External Appearance ..................................................... 3

4．Features .......................................................................... 4

5．Specifications ................................................................. 9

6．Dimensions ................................................................... 17

7．Refrigeration System Sketch Drawing ....................... 20

8．Wiring Diagrams ........................................................... 22

9．Electric Characteristics ............................................... 35

10．Capacity Tables .......................................................... 36

11．Exploded View ............................................................ 54

12．Trouble Shooting ........................................................ 72

13．Installation .................................................................. 84

14．Commissioning ........................................................ 101

15．Maintenance ............................................................. 102

16．Control System ......................................................... 104

17. Optional Accessories ................................................ 163

Appendix .......................................................................... 163

Manufacture reserves the right to discontinue, or change at any time, specifications or designs without notices and without

incurring obligations.

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

No

Model

Refrigerant

Net dimension

Net weight

Power supply

W×H×D (mm)

(kg)

1

MDC

-SS35/RN1L

R410A

1020×1770×980

320

380-415/3/50

2

MDC

-SS65/RN1L

R410A

2000×1770×960

530

380-415/3/50

3

MDC

-SS80/RN1L

R410A

2000×1770×960

645

380-415/3/50

4

MDC

-SS130/RN1

R410A

2200×2060×1120

935

380-415/3/50

1．Nomenclature

MD C - S P 35 M - R N1 L

Working condition:

Omit for T1 condition
T: Tropical condition
L: Low ambient temp. cooling

Refrigerant type

N1:R410A Omit for R22

Power Supply

S: 380V, 50Hz, 3Ph
R: 380~415V, 50Hz, 3Ph

M: Built-in hydraulic module
Rated cooling capacity (kW)
Special function code

S: Standard, double pipe or shell-tube heat exchanger
and fixed compressor
P: Plate heat exchanger, fixed compressor

Series code

S: Super
P: Power
M: Maker

Chiller
MDV

2．Product Lineup

SS series

2 Nomenclature&Product Lineup

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

3. External Appearance

25/35kW module 65/80kW module

130kW module

External appearance 3

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

130kW

130kW

2080kW

Max. 16 modules

Slave

Master

Slave

4．Features

4.1 New structure design

The module adopts new structure design, H shape condenser, 360O air suction, increased the heat
exchanging area, efficiently enhanced the heat exchange efficiency.

4.2 Modular design, flexible combination

The unit adopts modular design, which can make more units to connect together. The maximum
combination of the system consists of 1 main unit and 15 slave units. Cooling (heating) capacity range is
from 35kW to 2080kW，meanwhile every separate module can operate as main unit, also each module can
be a slave unit with modules combination, more convenient for design and installation.

4.3 Backup functions
When unit is failed

 If master unit fails, all the units will stop.
 If one slave unit fails, this unit will stop but the others will keep running.
 When the master unit fails, any of the slave one can be set as the master unit by manual setting.

Features 4

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Slave

Master

When unit is under protection

 If master unit’s protection happens, this unit will stop but the others will keep running.
 If slave unit’s protection happens, this unit will stop but the others will keep running.
 ( Except PE, P9 protection happens)

PE：Low temperature protection of evaporator.
P9：Outlet and inlet water temperature difference protection.

4.4 Alternative cycle duty operation

In one combination, all slave units operate as alternative in cycle duty to keep equal running time,
realize higher stability, better reliability and longer lifespan.
(For example, five modules combination, no.1 is master unit, others are slave units.)

1

2

3

4

4.5 Intelligent defrosting technology

Midea Fast Defrosting

Heatingcapacity

T min

5

Time
saving

1

3

2

Traditional defrosting

4

5

1

3

4

2

5

7 minutes less！

Model alternate defrosting, small fluctuation for water temperature
Manual defrosting program for service purpose (10S Pressing the check button)

4.6 High efficiency heat exchange technology

The chiller adopts inner grooved copper tube and hydrophilic aluminum foil，greatly improve the heat
exchange efficiency.

Features 5

Time

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Easy to transport

No need water cooling tower

Inner grooved copper tube

Hydrophilicaluminum foil

4.7 EXV more precisely flow control

Patented liquid distribution components to maximize performance and minimize defrost impact.
500 steps EXV plus capillary for stable and accurate gas flow control.
Fast respond resulting in higher efficiency and improved reliability.

100%

95%

90%
85%
80%

75%

70%
65%
60%
55%

50%

45%
40%
35%
30%
25%

20%

15%
10%

4.8 Reliable protections

Many kinds of protection are adopted to make sure the safe running for chiller.

High/lowpressure

protection of compressor

Over-curre ntprotection

of compresor

Power phases

sequence protection

Airdischarge temperature

protectionof compressor

Evaporator low temperature

protection in cooling

Systemhigh temperature

protection

System anti-freezing

protection in winter

Waterflow protection

Frequently ON/OFF

protection of compressor

Sensor malfunction protection

4.9 Easy transportation and installation

Air cooled scroll chiller structure is compact, light weight, easy transportation and installation, no need
cooling water tower, significant cost-savings.

6 Features

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Mode

Ambient temperature range

Cooling

-10˚C ~46˚C

0˚C ~17˚C (7˚C is default, less than 5 ˚C must add the antifreeze, SS
series.)

5˚C ~17˚C（SP series）

Heating

-15˚C ~24˚C

25˚C ~50˚C (45˚C is default)

Refrigerant inlet

-15 ˚C

Ambient temp. range

-10 ˚C

-5 ˚C

0 ˚C

5 ˚C

30˚C

35 ˚C

40 ˚C

45 ˚C
Cooling range

-10 ˚C

46˚C

Heating range

-15 ˚C

24 ˚C

Water outlet temp. range

5 ˚C

50 ˚C

0 ˚C

Heating range

Cooling range

25 ˚C

0 ˚C

50 ˚C

50 ˚C

4.10 Applicable temperature range

Water outlet temperature range

10 ˚C 15 ˚C

20 ˚C

25 ˚C

Chilled outlet water temperature can be adjusted by wired controller according to customer’s demand.

17 ˚C

17 ˚C

25 ˚C

SS series

4.11 Double pipe&shell and tube heat exchanger

Chilled water inlet

Water deadzone

Flat baffle plate

Refrigerant outlet

Helical baffle

For shell-tube heat exchanger, the module adopts the new helical baffle design to avoid the rectangular
place of water dead zone, greatly improve the heat exchange efficiency.

SP series

4.12 Plate heat exchanger

By adopting high efficiency plate heat exchanger, the energy consumption can be reduced.

Features 7

Chilled water outlet

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

4.13 Built-in hydraulic module

The modules are fully integrated and built-in hydraulic module, such as expansion tank, plate heat
exchanger, water circulating pump, etc. It saves installation space and cost.
(Available for MDC-SP25M-RN1L &MDC-SP35M-RN1L)

Water charge valve

0.15MPa< Water
replenishing pres<0.6MPa

Plate heat
exchanger

Auxiliary electric heater

Stop valve Pressure gauge Water flow switch Gate valve

Y-shaped filter Thermometer Circulating pump Check valve Automatic discharge valve

Expansion vessel

Safety valve

Flexible joint

Differential pressure

by-pass valve

Drain valve

Drain valve

Differential pressure
by-pass valve

Terminal

Two-way valve

Three-way valve

8 Features

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Model

MDC

-SS35/RN1L

MDC

-SS65/RN1L

Cooling Capacity

kW

35

65

Heating Capacity

kW

37

69

Power input

Cooling

kW

11.5

20.4

Cooling rated current

A

19.0

36.5

Heating

kW

11.3

21.5

Heating rated current

A

20.0

37.2

EER

kW / kW

3.04

3.19

COP

kW / kW

3.27

3.21

Power supply

V/Ph/Hz

380-415/3/50

380-415/3/50

Power supply
Manual switch A 50

125

Fuse

100

Max. Input consumption

29

Max. Current

54.5

Compressor

Type

Scroll (fixed speed)

Brand

Danfoss

Model

CH290A4BBA

Quantity

1

Capacity

65.1

Input

20.4

Rate load Amps.(RLA)

A

21.4

44.3

Locked rotor Amp(LRA)

A

147

260

Refrigerant oil

ml

3300

6700

Refrigerant
Type

R410A

R410A

Refrigerant control

EXV+ capillary

EXV+ capillary

Weight

kg

5.4

11.5

Condenser (Air
side)

Type

Fin-coil

Fin-coil

Number of rows

2

2

Fan motor model

YDK550-6E

YDK550-6E

Quantity of fan motor

Pieces

1

2

Air flow

×103m3/h

13.5

27

Fan motor rated current

A

3.7

3.7×2

Fan motor input

kW

0.8

0.8×2

Evaporator
(Water side)

Type

Double-pipe

Shell-tube

Water pressure drop

kPa

55

30

Volume

L

10

35

Water inlet/outlet pipeline
inside normal diameter

mm

DN40

DN65

Water flow volume

m3/h

6

11.2

Max. design pressure

MPa

1

1

Water pipe connection type

Flexible joint(Flange)

Flexible joint(Flange)

Dimension

Net(D×H×W)

mm

1020×1770×980

2000×1770×960

5．Specifications

SS series

A 36
kW 14
A 27

Scroll (fixed speed)

Piece
kW
kW

Danfoss

SH140A4ALC

1

36.8

11.3

Specifications 9

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Packing size(D×H×W)

2090×1890×1030

Weight
Net weight

530

Operation weight

kg

330

590

Connection
wiring

Power wire

mm2

10×4+16×1

35×4+16×1

Signal wire

mm2

0.75×3-core with shielding

0.75×3-core with shielding

Control type

Wired controller

Wired controller

Safety protection device

Noise level

67

Operation water temp

Ambient temp

mm 1070×1900×1030
kg 320

1) Protection for over-high discharge pressure.

2) Protection for over-low suction pressure.

3) Power supply phase sequence protection.

4) Anti-freezing protection in cooling mode.

5) Anti-freezing protection in Winter.

6) Protection for compressor over current.

7) Protection for compressor overload.

8) Outlet and inlet water temperature difference protection.

9) Compressor discharge temperature protection.

10) Water flow cut-off protection.

11) Sensor malfunction protection.

12) Low ambient temperature drive-up protection

13) Low temperature protection of shell and tube heat
exchanger.

dB(A) 65

℃

℃ Cooling：-10～46 Heating：-15～24

Note: Specifications are based on the following conditions:
Cooling : chilled water inlet/outlet: 12˚C / 7˚C, and outdoor ambient temp. of 35°C DB.
Heating : heat water inlet/outlet: 40˚C / 45˚C, and outdoor ambient temp. 7˚C DB/6°C WB.
Water side fouling factor: 0.086m2˚C /kW.

Cooling：0～17(Less than 5℃ must add antifreeze)
Heating：25～50

10 Specifications

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Model

MDC

-SS130/RN1

Cooling Capacity

kW

80

130

Heating Capacity

kW

85

138

Power input

Cooling

kW

25.8

42.3

Cooling rated current

A

43.8

73

Heating

kW

26.5

43

Heating rated current

A

40.0

74.4

EER

kW / kW

3.1

3.07

COP

kW / kW

3.21

3.21

Power supply

V/Ph/Hz

380-415/3/50

380-415/3/50

Power
supply

Manual switch A 150

200

Fuse

A

100

150

Max. Input consumption

kW

34.6

59

Max. Current

109

Compressor

Type

Scroll (fixed speed)

Brand

Danfoss

Model

CH290A4BBA

Quantity

2

Capacity

65.1

Input

20.5

Rate load Amps.(RLA)

44.3

Locked rotor Amp(LRA)

260

Refrigerant oil

6700

Refrigerant
Type

R410A

R410A

Refrigerant control

EXV+ capillary

EXV+ capillary

Weight

kg

6.5×2

10.5×2

Condenser
(Air side)

Type

Fin-coil

Fin-coil

Number of rows

2

3

Fan motor model

YDK550-6E

YS2000-6A

Quantity of fan motor

Pieces

2

2

Air flow

×103m3/h

27

50

Fan motor rated current

A

3.7×2

4.8×2

Fan motor input

kW

0.8×2

2.59×2

Evaporator
(Water side)

Type

Shell-tube

Shell-tube

Water pressure drop

kPa

30

40

Volume

L

47.5

60

Water inlet/outlet pipeline
inside normal diameter

mm

DN65

DN65

Water flow volume

m3/h

13.8

22.4

Max. design pressure

MPa

1

1

Water pipe connection type

Flexible joint(Flange)

Flexible joint(Flange)

Dimension
Net(D×H×W)

mm

2000×1770×960

2200×2060×1120

Packing size(D×H×W)

mm

2090×1890×1030

2250×2200×1180

Weight
Net weight

kg

645

935

Operation weight

kg

710

1005

MDC-SS80/RN1L

A 65

Scroll (fixed speed)

Danfoss

SH184A4ALC

Pieces
kW
kW
A

A
ml 3600

2

44.7

13.7

27.6
197

Specifications 11

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Connection
wiring

Power wire

35×4+16×1

Signal wire

0.75×3-core with shielding

Control type

Wired controller

Wired controller

Safety protection device

Noise level

68

Operation water temp

Ambient temp

mm2 25×4+16×1
mm2 0.75×3-core with shielding

1) Protection for over-high discharge pressure.

2) Protection for over-low suction pressure.

3) Power supply phase sequence protection.

4) Anti-freezing protection in cooling mode.

5) Anti-freezing protection in Winter.

6) Protection for compressor over current.

7) Protection for compressor overload.

8) Outlet and inlet water temperature difference protection.

9) Compressor discharge temperature protection.

10) Water flow cut-off protection.

11) Sensor malfunction protection.

12) Low ambient temperature drive-up protection

13) Low temperature protection of shell and tube heat exchanger.

dB(A) 67

℃

℃

Note: Specifications are based on the following conditions:
Cooling : chilled water inlet/outlet: 12˚C / 7˚C, and outdoor ambient temp. of 35°C DB.
Heating : heat water inlet/outlet: 40˚C / 45˚C, and outdoor ambient temp. 7˚C DB/6°C WB.
Water side fouling factor: 0.086m2˚C /kW.

Cooling：0～17(Less than 5℃ must add antifreeze)
Heating：25～50

Cooling ： -10 ～ 46 Heating ：

-15～24

Cooling：15～46 Heating：-15～

24

12 Specifications

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

C

Model

A B C D E F G

H

MDC

-SS25/RN1L

MDC

-SP25M-RN1L

MDC

-SS35/RN1L

1020

980

1770

237

400

250

210

570

6．Dimensions

25/35kW module

F

D

E

A

G

H

B

Unit: mm

Dimensions 17

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

F

Model

E F G

H

MDC

-SS65/RN1L

MDC

-SS80/RN1L

2000

960

1770

336

1420

506

1460

862

65/80kW module

D

Unit: mm

E

C

A

Front view Side view

A B C D

B

18 Dimensions

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

F

Model

A B C D E F G H MDC

-SS130/RN1

2200

1120

2060

390

1420

347

1460

1017

H

130kW module

A

G

C

D

E

A

Hole for anchor boltΦ15

Front view

B

Top view

Unit: mm

Dimensions 19

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

7．Refrigeration System Sketch Drawing

SS series

7.1 35kW module refrigeration system sketch drawing

Each module has one compressor with one separate unit, one refrigerant system.

Fan

Condenser

4-way valve

Compressor

Water outlet

Water inlet

Capillary
Evaporator
(Double-pipe heat exchanger)

Low pressure cylinder

EXV

7.2 65/80kW module refrigeration system sketch drawing

Each module has one compressor with one separate unit, one refrigerant system.

Fan

EXV

Shell and tube

heat exchanger

Compressor

Condenser

4-Way valve

Capillary

Water flow direction

Dry type evaporator

low pressure cylinder

20 Refrigeration System Sketch Drawing

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Compressor B

7.3 130kW module refrigeration system sketch drawing

Each module has two compressors with one unit, one shell-tube evaporator for two refrigerant systems.

low pressure cylinder B

4-Way valve B

Fan B

Fan A

Condenser

4-Way valve A

Capillary

Capillary

EXV

EXV

Shell and tube

Water flow direction

Dry type evaporator

heat exchanger

low pressure cylinder A

Refrigeration System Sketch Drawing 21

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

8．Wiring Diagrams

8.1 Wiring Diagrams
SS series

MDC-SS35/RN1L

22 Wiring Diagrams

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

MDC-SS65/RN1L

Wiring Diagrams 23

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

MDC -SS80/RN1L

24 Wiring Diagrams

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

MDC -SS130/RN1

Wiring Diagrams 25

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

8.2 Networking Communication Schematic
SS series

Wiring Diagrams 31

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

Model

Outdoor Unit

Power Supply

Compressor

OFM

Hz

Voltage

Min.

Max.

TOCA

MFA

LRA

RLA

kW

FLA

MDC

-SS35/RN1L

50

380-415

342

456

27

36

147

21.4

0.8

3.7

MDC

-SS65/RN1L

50

380-415

342

456

54.5

100

260

44.3

0.8

3.7

MDC

-SS80/RN1L

50

380-415

342

456

65

100

197

27.6

0.8(×2)

3.7(×2)

MDC

-SS130/RN1

50

380-415

342

456

109

150

260

44.3

2.59(×2)

4.8(×2)

9．Electric Characteristics

SS series

Remark:

TOCA: Total Over-current Amps. (A)
MFA: Max. Fuse Amps. (A)
LRA: Locked Rotor Amps. (A)
RLA: Rated Locked Amps. (A)
OFM: Outdoor Fan Motor.
FLA: Full Load Amps. (A)
kW: Rated Motor Input (kW)

Electric Characteristics 35

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Chilled water outlet

temp.

Ambient temp.(℃)

21.00

25.00

30.00

35.00

40.00

46.00

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

5.00

39.18

10.13

36.90

32.90

11.10

30.83

11.65

28.36

12.23

6.00

40.51

10.29

38.11

33.92

11.27

31.81

11.83

29.30

12.43

7.00

41.92

10.50

39.40

35.00

11.50

32.87

12.08

30.30

12.68

8.00

43.22

10.81

40.58

35.98

11.85

33.82

12.44

31.22

13.06

9.00

44.44

10.92

41.68

11.25

39.18

11.60

36.89

11.96

34.71

12.56

32.08

13.19

10.00

46.12

11.08

43.22

11.42

40.59

11.78

38.18

12.14

35.97

12.75

33.27

13.38

11.00

47.41

11.19

44.39

11.53

41.64

11.89

39.14

12.26

36.90

12.87

34.17

13.52

12.00

48.49

11.35

45.36

11.70

42.51

12.07

39.92

12.44

37.68

13.06

34.93

13.71

13.00

49.36

11.44

46.13

11.80

43.19

12.16

40.52

12.54

38.29

13.16

35.53

13.82

14.00

50.58

11.52

47.23

11.88

44.18

12.25

41.41

12.62

39.17

13.26

36.39

13.92

15.00

51.23

11.58

47.79

11.94

44.67

12.31

41.82

12.69

39.61

13.32

36.83

13.99

16.00

52.51

11.70

48.94

12.06

45.69

12.43

42.74

12.81

40.52

13.46

37.72

14.13

17.00

53.18

11.75

49.52

12.12

46.19

12.49

43.17

12.88

40.97

13.52

38.18

14.20

10．Capacity Tables

10.1 Cooling
SS series

MDC-SS35/RN1L

kW kW kW

10.44 34.81 10.76

10.60 35.92 10.93

10.82 37.10 11.16

11.14 38.17 11.49

Note:

The inlet/outlet water temperature difference is 5℃.

36 Capacity Tables

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

37

Chilled water

outlet temp.

Ambient temp.(℃)

21.00

25.00

30.00

35.00

40.00

46.00

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

5.00

72.77

17.97

68.52

18.52

64.64

19.10

61.10

19.69

57.25

20.67

52.67

21.70

6.00

75.23

18.25

70.77

18.81

66.70

19.39

62.99

19.99

59.08

20.99

54.41

22.04

7.00

77.85

18.62

73.17

19.19

68.90

19.79

65.00

20.40

61.04

21.42

56.27

22.49

8.00

80.26

19.18

75.36

66.82

21.01

62.81

22.06

57.97

23.17

9.00

82.52

19.36

77.41

68.51

21.22

64.47

22.28

59.57

23.39

10.00

85.65

19.65

80.27

70.91

21.53

66.80

22.61

61.79

23.74

11.00

88.04

19.85

82.44

72.68

21.75

68.54

22.83

63.47

23.98

12.00

90.06

20.14

84.24

74.13

22.06

69.98

23.17

64.87

24.33

13.00

91.66

20.30

85.67

20.93

80.21

21.57

75.25

22.24

71.11

23.35

65.99

24.52

14.00

93.94

20.44

87.72

21.07

82.05

21.72

76.90

22.40

72.75

23.52

67.58

24.69

15.00

95.15

20.54

88.76

21.18

82.95

21.83

77.67

22.51

73.55

23.63

68.41

24.81

16.00

97.52

20.75

90.88

21.39

84.86

22.05

79.38

22.73

75.25

23.87

70.06

25.06

17.00

98.77

20.85

91.96

21.49

85.79

22.16

80.17

22.84

76.08

23.99

70.91

25.18

MDC-SS65/RN1L

19.77 70.90 20.38

19.96 72.76 20.58

20.26 75.38 20.89

20.46 77.33 21.09

20.76 78.95 21.40

Note:

The inlet/outlet water temperature difference is 5℃.

Capacity Tables

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Chilled water

outlet temp.

Ambient temp.(℃)

21.00

25.00

30.00

35.00

40.00

46.00

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

5.00

89.56

22.72

84.34

23.43

79.56

24.15

75.20

24.90

70.46

26.14

64.83

27.45

6.00

92.59

23.08

87.10

23.79

82.09

24.53

77.52

25.28

72.71

26.55

66.97

27.88

7.00

95.82

23.55

90.06

80.00

25.80

75.12

27.09

69.26

28.44

8.00

98.78

24.25

92.75

82.24

26.57

77.31

27.90

71.35

29.30

9.00

101.57

24.49

95.28

84.32

26.83

79.35

28.17

73.31

29.58

10.00

105.42

24.86

98.80

87.27

27.23

82.21

28.60

76.04

30.03

11.00

108.36

25.10

101.46

89.45

27.50

84.35

28.88

78.11

30.32

12.00

110.84

25.47

103.68

91.24

27.91

86.13

29.30

79.84

30.77

13.00

112.82

25.67

105.44

26.47

98.72

27.28

92.61

28.13

87.52

29.53

81.22

31.01

14.00

115.62

25.85

107.96

26.65

100.99

27.47

94.65

28.32

89.54

29.74

83.18

31.23

15.00

117.11

25.98

109.24

26.78

102.10

27.61

95.59

28.46

90.53

29.89

84.19

31.38

16.00

120.02

26.24

111.85

27.05

104.44

27.89

97.70

28.75

92.62

30.19

86.23

31.70

17.00

121.56

26.37

113.18

27.18

105.58

28.02

98.67

28.89

93.64

30.33

87.27

31.85

MDC-SS80/RN1L

24.28 84.80 25.03

25.00 87.26 25.78

25.25 89.55 26.03

25.62 92.77 26.42

25.88 95.18 26.68

26.26 97.17 27.07

Note:

The inlet/outlet water temperature difference is 5℃.

38 Capacity Tables

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

39

Chilled water outlet

temp.

Ambient temp.(℃)

21.00

25.00

30.00

35.00

40.00

46.00

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

5.00

145.54

37.25

137.04

38.41

129.29

39.59

122.20

40.82

114.50

42.86

105.34

45.00

6.00

150.46

37.83

141.54

39.00

133.40

40.21

125.97

41.45

118.16

43.53

108.83

45.70

7.00

155.71

38.61

146.34

130.00

42.30

122.07

44.42

112.55

46.64

8.00

160.52

39.76

150.72

133.64

43.57

125.62

45.75

115.95

48.03

9.00

165.05

40.15

154.83

137.02

43.99

128.94

46.19

119.14

48.50

10.00

171.31

40.75

160.55

141.82

44.65

133.59

46.88

123.57

49.23

11.00

176.08

41.15

164.87

145.36

45.09

137.08

47.35

126.93

49.71

12.00

180.11

41.76

168.49

43.05

157.91

44.38

148.27

45.75

139.97

48.04

129.75

50.44

13.00

183.33

42.09

171.33

43.39

160.42

44.73

150.49

46.12

142.22

48.42

131.98

50.84

14.00

187.89

42.38

175.43

43.69

164.11

45.04

153.80

46.44

145.50

48.76

135.17

51.20

15.00

190.30

42.59

177.52

43.91

165.90

45.27

155.34

46.67

147.11

49.00

136.81

51.45

16.00

195.03

43.02

181.76

44.35

169.71

45.72

158.76

47.13

150.50

49.49

140.12

51.97

17.00

197.53

43.23

183.92

44.57

171.57

45.95

160.35

47.37

152.17

49.74

141.82

52.22

MDC-SS130/RN1L

39.80 137.80 41.03

40.99 141.79 42.26

41.39 145.52 42.67

42.01 150.75 43.31

42.43 154.66 43.74

Note:

The inlet/outlet water temperature difference is 5℃.

Capacity Tables

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

45

Hot water

outlet
temp.

Ambient temp.(℃)

-10

-6

-2 2 7

10

13

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

40.00

22.95

7.07

28.69

8.03

33.75

8.93

37.51

9.70

40.77

10.21

45.66

10.83

52.51

11.69

41.00

22.23

7.21

27.82

8.20

39.66

10.42

44.34

11.05

50.90

11.93

42.00

21.58

7.36

27.05

8.37

38.69

10.64

43.18

11.27

49.48

12.18

43.00

21.06

7.51

26.43

8.54

37.93

10.85

42.25

11.50

48.34

12.42

44.00

20.65

7.67

25.95

8.71

37.37

11.07

41.56

11.74

47.46

12.68

45.00

20.35

7.82

25.60

8.89

37.00

11.30

41.07

11.98

46.82

12.94

46.00

19.96

7.90

25.13

8.98

29.78

9.97

33.31

10.84

36.45

11.41

40.38

12.10

45.95

13.07

47.00

19.37

8.06

24.42

9.16

28.97

10.17

32.44

11.06

35.53

11.64

39.30

12.34

44.65

13.33

48.00

18.60

8.30

23.49

9.43

27.90

10.48

31.27

11.39

34.29

11.99

37.86

12.71

42.93

13.73

49.00

17.59

8.63

22.24

9.81

26.44

10.90

29.68

11.85

32.58

12.47

35.90

13.22

40.64

14.28

50.00

16.46

9.06

20.83

10.30

24.80

11.44

27.87

12.44

30.62

13.09

33.68

13.88

38.06

14.99

10.2 Heating
SS series

MDC-SS35/RN1L

32.76 9.11 36.44 9.90

31.89 9.30 35.52 10.10

31.20 9.49 34.78 10.31

30.67 9.68 34.23 10.52

30.30 9.88 33.86 10.74

Note:

The inlet/outlet water temperature difference is 5℃.

Capacity Tables

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Hot water outlet

temp.

Ambient temp.(℃)

-10

-6

-2 2 7

10

13

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

40.00

42.80

13.45

53.51

15.29

62.95

16.99

69.94

18.46

76.02

19.43

85.15

20.60

97.92

22.25

41.00

41.45

13.73

51.87

15.60

61.10

17.33

67.96

18.84

73.95

19.83

82.68

21.02

94.92

22.70

42.00

40.25

14.01

50.44

15.92

59.48

17.69

66.23

19.22

72.15

20.24

80.52

21.45

92.28

23.17

43.00

39.28

14.29

49.28

19.62

70.74

20.65

78.80

21.89

90.15

23.64

44.00

38.52

14.58

48.39

20.02

69.69

21.07

77.50

22.33

88.50

24.12

45.00

37.96

14.88

47.75

20.43

69.00

21.50

76.59

22.79

87.31

24.61

46.00

37.22

15.03

46.87

20.63

67.97

21.72

75.31

23.02

85.70

24.86

47.00

36.12

15.33

45.54

21.04

66.27

22.15

73.29

23.48

83.26

25.36

48.00

34.69

15.79

43.80

17.95

52.02

19.94

58.32

21.67

63.95

22.81

70.60

24.18

80.06

26.12

49.00

32.80

16.42

41.47

18.66

49.31

20.74

55.34

22.54

60.75

23.73

66.95

25.15

75.78

27.16

50.00

30.69

17.24

38.85

19.60

46.25

21.77

51.96

23.67

57.10

24.91

62.81

26.41

70.98

28.52

MDC-SS65/RN1L

16.24 58.18 18.05 64.86

16.57 57.20 18.42 63.84

16.91 56.51 18.79 63.14

17.08 55.54 18.98 62.12

17.42 54.03 19.36 60.50

Note:

The inlet/outlet water temperature difference is 5℃.

46 Capacity Tables

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

47

Hot water outlet

temp.

Ambient temp.(℃)

-10

-6

-2 2 7

10

13

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

40.00

52.73

16.58

65.91

18.84

77.55

20.94

86.16

22.76

93.65

23.95

104.89

25.39

120.63

27.42

41.00

51.06

16.92

63.90

19.23

75.27

21.36

83.72

23.22

91.10

24.44

101.85

25.91

116.93

27.98

42.00

49.58

17.26

62.13

19.62

73.27

21.80

81.59

23.69

88.88

24.94

99.19

26.44

113.67

28.55

43.00

48.38

17.62

60.71

20.02

24.18

87.14

25.45

97.07

26.98

111.05

29.14

44.00

47.45

17.98

59.61

20.43

24.67

85.85

25.97

95.47

27.53

109.02

29.73

45.00

46.76

18.34

58.82

20.84

25.18

85.00

26.50

94.35

28.09

107.56

30.34

46.00

45.85

18.53

57.74

21.05

25.43

83.73

26.77

92.77

28.37

105.57

30.64

47.00

44.49

18.90

56.11

21.47

25.94

81.63

27.30

90.28

28.94

102.56

31.25

48.00

42.74

19.46

53.96

22.12

64.08

24.58

71.84

26.71

78.77

28.12

86.97

29.81

98.62

32.19

49.00

40.41

20.24

51.09

23.00

60.74

25.56

68.18

27.78

74.84

29.24

82.47

31.00

93.36

33.48

50.00

37.81

21.26

47.86

24.15

56.97

26.84

64.01

29.17

70.35

30.71

77.38

32.55

87.44

35.15

MDC-SS80/RN1L

71.68 22.24 79.91

70.46 22.70 78.64

69.61 23.16 77.78

68.41 23.39 76.52

66.56 23.86 74.53

Note:

The inlet/outlet water temperature difference is 5℃.

Capacity Tables

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Hot water outlet temp.

Ambient temp.(℃)

-10

-6

-2 2 7

10

13

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

Capacity

Power

(℃)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

40.00

85.61

26.91

107.01

30.57

125.90

33.97

139.89

36.93

152.05

38.87

170.29

41.20

195.84

44.50

41.00

82.89

27.45

103.75

31.20

122.20

34.66

135.93

37.68

147.91

39.66

165.36

42.04

189.83

45.40

42.00

80.50

28.01

100.87

31.83

118.96

35.37

132.47

38.45

144.30

40.47

161.04

42.90

184.55

46.33

43.00

78.55

28.59

98.56

39.23

141.47

41.30

157.60

43.78

180.29

47.28

44.00

77.03

29.17

96.78

40.03

139.38

42.14

154.99

44.67

177.00

48.24

45.00

75.92

29.76

95.49

40.85

138.00

43.00

153.18

45.58

174.63

49.23

46.00

74.43

30.06

93.74

41.26

135.93

43.43

150.61

46.04

171.39

49.72

47.00

72.23

30.66

91.09

42.08

132.53

44.30

146.58

46.96

166.52

50.71

48.00

69.38

31.58

87.60

35.89

104.04

39.88

116.64

43.35

127.89

45.63

141.19

48.37

160.11

52.23

49.00

65.61

32.85

82.94

37.33

98.62

41.47

110.69

45.08

121.50

47.45

133.89

50.30

151.56

54.32

50.00

61.38

34.49

77.70

39.19

92.50

43.55

103.93

47.33

114.21

49.83

125.63

52.81

141.96

57.04

MDC-SS130/RN1L

32.48 116.37 36.09 129.73

33.15 114.39 36.83 127.67

33.82 113.01 37.58 126.27

34.16 111.07 37.96 124.24

34.85 108.05 38.72 121.00

Note:

The inlet/outlet water temperature difference is 5℃.

48 Capacity Tables

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

11．Exploded View

SS series

MDC-SS35/RN1L

54 Exploded View

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

55

No.

Part Name

Part Name

Qty

1

Bottom panel II ass'y

Outdoor electrical box ass'y

1

2

Column

AC contactor

1

3

Gas-liquid separator

1

14.2

Terminal block

1

4

Suction pipe ass'y

1

14.3

Wire joint

1

5

Compressor

1

14.5

Capacitor

1

6

Condenser's guard plate I ass'y

1

14.6

Transformer

1

7

Condenser's guard plate III ass'y

2

14.7

Relay

1

8

Condenser hoisting parts

1

14.9

Low temp. cooling module ass'y

1

8.2

Upper frame welded parts

1

14.10

E-heater control board ass'y

1

8.3

Install base welding parts of water pan

1

14.11

Outdoor main board ass'y

1

8.4

Seal plate

1

14.12

Welded parts of electrical box

1

8.5

Water pan

1

15

Welded parts of base

1

8.6

Support ass'y of motor

1

16

Double pipe heat exchanger

1

8.7

Top cover ass'y

1

17

Four-way valve ass'y

1

8.8

Outlet net cover

1

17.1

4-way valve

1

8.9

Condenser parts

1

17.2

Meter connector

2

8.10

Asynchronous motor

1

17.3

Pressure switch

1

9

Condenser's guard plate II ass'y

1

18

Bottom panel I ass'y

1

10

Bottom panel III ass'y

1

19

Total water temperature mouth components

1

11

Input pipe ass'y of evaporator

1

20

Indoor temp. sensor ass'y

1

11.2

Electronic expansion valve

1

21

Pipe temp. sensor ass'y

1

12

Fixed panel board

1

22

Pipe temp. sensor ass'y

5

13

Piping support plate

1

Qty No.

2 14
4 14.1

Exploded View

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

MDC-SS65/RN1L

56 Exploded View

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

57

No.

Part Name

Qty

1

Column

1

2

Gas-liquid separator

2

3

Throttle part

2

3.1

Electronic expansion valve

1

3.2

Strainer

1

4

Pipe support

1

5

Shell-tube evaporator

1

6

Four-way valve ass'y

1

18.4

Low ambient temp. cooling kit ass'y

1

6.1

4-way valve

1

18.5

Outdoor main board ass'y

1

6.2

Pressure controller

1

18.6

Signal board of outdoor main board ass'y

1

6.3

Pressure switch

1

18.7

Electrical installation plate parts

1

7

Suction pipe ass'y

1

18.8

Terminal block

2

7.1

Pressure controller

1

18.9

Terminal block, 4P

1

8

Output pipe ass'y of condenser

1

18.10

AC contactor

1

9

Panel connection plate

2

18.11

Transformer

1

10

Compressor(fixed)

1

18.12

Current transformer

2

11

Base of welded parts

1

18.13

Capacitor

2

12

Top left panel ass'y

1

18.14

Auxiliary board ass'y of relay

1

13

The middle plate

2

19

Side panel ass'y

2

14

Front right panel ass'y

1

20

Refrigerant

11.5

15

Condenser hoisting parts

1

21

Electrical box door

1

15.1

Condenser sub-ass'y

2

22

Four-way valve coil

1

15.1.1

Condenser ass'y

1

23

EEV solenoid coil

1

15.1.2

Flute tube ass'y

1

24

Total water temperature mouth components

1

15.1.3

Distributor ass'y

1

25

Room temp sensor ass'y T41

1

15.2

Support ass'y of motor

2

26

Pipe temp. sensor ass'y

3

15.3

Motor

2

27

Pipe temp. sensor ass'y

3

15.4

Axial propeller

2

28

Pipe temp. sensor ass'y

2

15.5

Connection plate ass'y of condenser

2

29

temperature controller of the discharge pipe side

1

15.6

Top cover ass'y

2

30

Compressor electric heater

1

15.7

Water pan

2

31

Wired controller

1

15.8

Upper frame welded parts

1

Qty No. Part Name

4 15.9
1 16
1 17
1 18
2 18.1
1 18.2
1 18.3

Middle frame welded parts
Outlet net cover
Rear panel ass'y
Outdoor electrical box ass'y
Electrical box welded parts
Outdoor current detection board ass'y
Low temp. cooling module ass'y

Exploded View

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

MDC-SS80/RN1L

58 Exploded View

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

59

No.

Part Name

Part Name

Qty

1

Column

Auxiliary plate ass'y of relay

1

2

Suction pipe ass'y

Outdoor main board ass'y

1

3

Base welded parts

AC contactor

2

4

Gas-liquid separator

Transformer

1

5

Compressor

current transformer

2

6

Pipe support IV

Wire joint, 5p

1

7

Front panel ass'y

Wire joint

1

8

The middle plate

1

18.9

Terminal block

2

9

Electrical maintenance board

1

18.10

Terminal block

1

10

Electric control box of the door

1

18.11

Capacitor

2

11

Throttle parts I

1

19

4-way valve ass'y II

1

11.1

Electronic expansion valve

1

19.1

Four-way valve kit (RoHS)

1

12

Side panel ass'y

2

19.2

Pressure controller

1

13

Panel connection plate

2

19.3

Pressure controller

1

14

4-way valve ass'y I

1

20

Throttle parts II

1

14.1

Four-way valve kit (RoHS)

1

20.1

Electronic expansion valve

1

14.2

Pressure switch

1

21

Shell and tube evaporator

1

14.3

Pressure controller

1

22

Middle backplate

1

15

Hoisting parts of condenser

1

23

Front-left panel ass'y

1

15.1

Middle frame welded parts

1

24

Front-right panel ass'y

1

15.2

Connection plate ass'y of condenser

2

25

EEV solenoid coil

1

15.3

Water pan

2

26

Electronic expansion valve coil

1

15.4

Condenser parts

2

27

R410A

13

15.5

Support ass'y of motor

2

28

Total water temperature mouth components

1

15.6

Asynchronous motor

2

29

Wired controller

1

15.7

Axial fan

2

30

Pipe fixing clamp

2

15.8

Outlet net cover

2

31

Pipe clamp B

2

15.9

Top cover ass'y

2

32

Pipe clamp B

1

15.10

Upper frame welded parts

1

33

Sealplate

2

16

Pipe support II

1

34

Cover of wire slot

1

17

Pipe support I

2

35

Compressor support ass'y

2

18

Outdoor electric control box ass'y

1

36

Pipe support III

1

18.1

Outdoor main control board ass'y

1

37

Wire slot ass'y

1

Qty No.

4 18.2
2 18.3
1 18.4
2 18.5
2 18.6
1 18.7
2 18.8

Exploded View

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

MDC-SS130/RN1

60 Exploded View

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

61

No.

Part Name

Part Name

Qty

1

Condenser hoisting parts

Terminal block

3

1.1

Upper frame ass'y

Outdoor unit Fan relay control board

1

1.2

Motor(three-phase asynchronous)

AC contactor

2

1.3

Axial-flow fan

Transformer

1

1.4

Out of wind net

Electronic installation board ass'y

1

1.5

Axial-flow fan

Electrical box door

1

1.6

Top cover ass'y

Under rain-proof baffle

1

1.7

Motor bracket ass'y

2

9

Column

4

1.8

Connection plate welded parts of condenser

2

10

Side panel ass'y

2

1.9

The middle connection beam

1

11

Compressor's pressure plate

8

1.10

Welded parts of sealing plate

2

12

Welded parts of base plate

1

1.11

Upper-middle column

2

13

Suction pipe ass'y I

1

1.12

Condenser parts II

2

14

Triangle reinforcing plate

7

1.13

Condenser parts I

2

15

Shell-tube evaporator

1

1.14

Condenser card board

4

16

Compressor(fixed)

2

1.15

Rubber pad

16

17

Front-left panel ass'y

1

1.16

Fixed plate of side plate

2

18

Gas-liquid separator

2

1.17

Fixed parts of side plate

4

19

Middle column

2

1.18

Base welded parts of water pan

1

20

Front-right panel ass'y

1

1.19

Water pan

1

21

Suction pipe ass'y II

1

2

Rear panel ass'y

2

22

Piping support

2

3

Output pipe ass'y of unit B condenser

1

23

Clamp II, pipe

4

4

Output pipe ass'y of unit A condenser

1

24

Piping support I

1

5

4-way valve ass'y of unit A

1

25

4-way valve ass'y of unit B

1

5.1

4-way valve

1

25.1

4-way valve

1

6

Outdoor unit electrical box ass'y

1

26

EXV ass'y of unit A

1

6.1

Electrical box welded parts

1

26.1

Electronic expansion valve

1

6.2

Outdoor unit main board ass'y

1

27

EXV ass'y of unit B

1

6.3

Outdoor current detection board ass'y

1

27.1

Electronic expansion valve

1

6.4

Wire joint, 5p

1

28

Connection pipe ass'y of 4-way valve evaporator unit A

1

6.5

Terminal block

1

29

Pipe temp. sensor ass'y

2

6.6

AC contactor

2

30

Pipe temp. sensor ass'y

1

6.7

Wire joint,6p

1

31

Pipe temp. sensor ass'y

1

6.8

Wire joint

1

Qty No.

1 6.9
1 6.10
2 6.11
1 6.12
2 6.13
1 7
2 8

Exploded View

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

No

Code

Trouble

1

E0

2

E1

Power phase sequence error

3

E2

Communication error

4

E3

Total water outlet temperature sensor error

5

E4

Outlet water temp sensor error

6

E5

Pipe temperature sensor error in condenser A

7

E6

Pipe temperature sensor error in condenser B

8

E7

Outdoor ambient temperature sensor error

9

E8

Output of the power protector error

10

E9

Water flow detection error(manual recovery)

11

EA

(Reserved failure code)

12

Eb

Anti-freezing temperature sensor error in double pipe exchanger

13

EC

Wired controller detected that the units on-line have decreased

14

Ed

(Reserved failure code)

15

EF

Inlet water temperature sensor error

16

P0

High pressure or air discharge temperature protection in system A (manual recovery)

17

P1

Low pressure protection in system A (manual recovery)

18

P2

High pressure or air discharge temperature protection in system B (manual recovery)

19

P3

Low pressure protection in system B (manual recovery)

20

P4

Current protection in system A (manual recovery)

21

P5

Current protection in system B(manual recovery)

22

P6

Condenser high temperature protection in system A

23

P7

Condenser high temperature protection in system B

24

P8

(Reserved failure code)

25

P9

Protection of outlet and inlet water temperature difference

26

PA

Low ambient temperature drive-up protection

27

Pb

System anti-freezing protection

28

PC

Anti-freezing pressure protection in system A (manual recovery)

29

Pd

Anti-freezing pressure protection in system B (manual recovery)

30

PE

Low-temperature protection of evaporator (manual recovery)

12．Trouble Shooting

12.1 Failure &protection codes

25/35/65/80/130kW module

Error of outdoor EEPROM

72 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

73

Troubles

Possible reasons

Solutions

Over high air discharge
pressure (Cooling
operation).

Air or other non-condensing gas still in the system.

Discharge gas from refrigerant charging inlet.
Re-vacuum the system if necessary.

Fins in the condenser are dirty or foreign substance
blocking fins.

Clean condenser fins.

Insufficient chilling air volume or condenser fan
error.

Check and repair the condenser fan, recover the
normal operation.

Excessive high air suction pressure.

Clean the heat exchanger.
Replace the EXV, capillary, filter.

Excessive refrigerant charging volume.

Discharge the excessive refrigerant.

Over high ambient temperature

Check ambient temperature

Over low air discharge
pressure(Cooling
operation).

Surrounding temperature is lower.

Measure the surrounding Temperature

Refrigerant leak or insufficient.

Leak-hunting or recharging.

Low suction pressure.

Refer to the “low suction pressure”

Over high air
suction pressure
(Cooling operation)

Refrigerant over-charged.

Discharge the additional refrigerant.

High temperature of the inlet chilled-water.

Check the heat insulation of water pipeline.

Over low air suction
pressure (Cooling
operation).
Insufficient water flow.

Measure the temperature difference between inlet
/outlet water, adjust the water flow.

Low temperature of inlet chilled-water.

Check installation.

Refrigerant leak or insufficient.

Leak-hunting or recharging.

Scaling in the evaporator.

Descaling.

Over high air discharge
pressure (Heating
operation).

Insufficient water flow.

Check temperature difference between water inlet
and outlet, and adjust the water flow volume.

Air or other non-condensing gas still in the system.

Discharge gas from refrigerant charging inlet.
Re-vacuum the system if necessary.

Scaling in water side of heat exchanger.

Descaling.

Over high temperature in chilling water inlet.

Check water temperature

Over low air discharge
pressure (Heating
operation).

Over low temperature of chilling water.

Check chilling water temperature

Refrigerant leakage or insufficient
refrigerant volume.

Test leakage or charge sufficient refrigerant to the
system.

Excessive low air suction pressure

Add refrigerant.
Check the EXV, capillary, filter or pressure
controller.

Over high air suction
pressure (Heating
operation)

Over heat air in the side of air heat exchanger

Check ambient temperature around it.

Excessive refrigerant charging volume.

Discharge the excessive refrigerant.

Over low air suction
pressure (Heating
operation).

Insufficient refrigerant charging volume.

Charge sufficient refrigerant to the system

Insufficient air flow volume.

Check fan rotating direction

Air loop short circuit.

Reason about remove air short-circuit

Insufficient frost-removal operation.

Error comes out from 4-way valve or thermal
resistor. Replace a new one if necessary.

Compressor stops
because of anti-freezing
protection (Cooling
operation).

Insufficient chilling water flow volume.

Error comes from pump or flow-type water volume
control. Check and repair or replace a new one.

Gas still in water loop.

Discharge air.

Thermal resistor error.

Upon error have been confirmed, please replace a
new one.

Compressor stops
because of high
pressure protection.

Over high air discharging pressure.

Discharge part of refrigerant.
Clean the heat exchanger.
Check the EXV,capillary, filter.

High pressure switch error.

Upon error have been confirmed, please replace a
new one.

Compressor stops
because of motor
overload.

Over high air discharging pressure and air suction
pressure.

Clean the heat exchanger.
Check the EXV,capillary, filter.

High voltage or low voltage, signal phase or phase
unbalance.

Confirm voltage not higher or lower than the rated
voltage +/-10%.

12.2 Troubles and Solutions

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Short circuit comes out from motor or connecting
interface.

Confirm resistors at motor are connected
corresponding to terminals.

Compressor stops
because of integrate
temperature sensor or
air discharge
temperature protection.

Over high or over low voltage.

Confirm voltage not higher or lower than the rated
voltage +/-10%.

Over high air discharging pressure or excessive low
air suction pressure.

Adjust refrigerant charge volume.

Clean the heat exchanger.
Check the EXV, capillary, filter.

Component error.

Check the integrated temperature sensor after
motor is cool down.

Compressor stops
because of low pressure
protection.

Filter of electronic expanding valve is blocked.

Replace a new filter.

Low voltage switch error.

If the switch is defective, please replace a new
one.

Excessive low air suction pressure.

Add the refrigerant.
Clean the heat exchanger.
Check the EXV, capillary, filter.

Abnormal noise gives
out form compressor.

Liquid refrigerant flows into compressor from
evaporator result in liquid slugging.

Adjust refrigerant charge volume.

Aging of compressor.

Replace a new compressor.

Compressor can’t start.

Over current relay trip up, fuse burnt out.

Replace damaged assembly.

Control circuit without power though.

Check the wring of control system.

High voltage or low voltage protection.

Reference to mention in above the parts of air
suction and discharge pressure error.

Coils inside contactor are burnt out.

Replace damaged assembly.

Wrong connection of phase sequence.

Re-connect and adjust the any 2 wires among 3
phases.

Water system error and flow volume controller short
connection.

Check water system.

Error signal delivered from wired controller.

Find out the error type and carry out the
corresponding measure to settle.

Air side heat exchanger
excessive frost.

4-way valve or thermal resistor error.

Check the running state. Replace a new one if
necessary.

Air loop short circuit.

Settle the short circuit of air discharge.

With noise.

Fixing screws at panel are loosen.

Fix up all assemblies.

74 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

75

Yes

No

No

Yes

Yes

Yes

High pressure and
discharged protection.

No

No

Yes

Yes

Yes

No

No

No

No

High pressure protection.

Blower stops rotating or rotates in
reversed direction in cooling mode,
water pump is not open or the flow.

Couldn’t start the EXV.

Pressure controller is broken
or the joint is loose.

Fin heat exchanger in cooling mode is too
dirty or aged, or too heavy encrustation in

EXV, capillary and filter are
dirty, blocking.

Discharge temperature
protection.

See the analysis of
discharge temp. protection
malfunction.

Inspect fan motor and
capacitor (1phase) or
start up the water pump.

Replace EXV, capillary
and filter.

There is air and filled refrigerant
too much in system.(Generally
occur after maintenance.)

PCB mistakes to alarm.

Empty, vacuuming and
append refrigerant if
necessary.

Check if it happened
frequently, if yes, please
replace PCB.

Inform the customer
service center.

12.3 Typical malfunction solutions

1) High pressure and discharged temperature protection

Yes

Replace EXV or coil.

Yes

Replace press controller,
fixed joint.

Yes

Clean heat exchanger.

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Low pressure protection.

No

Discharge temperature
protection.

Discharge temperature
switch is broken or joint
is loose.

Yes

Yes

Replace discharge
temperature switch, fixed
joint.

Yes

Yes

No

No

No

No

Detect leakage for all
system, append
refrigerant.

Refrigerant is too less.

Replace the EXV or coil.
refrigerant if ice blocked.

replace PCB.

Couldn’t open the EXV.

The EXV, capillary and filter
are dirty, blocked and ice
blocked.

PCB mistakes to alarm.

Inform the customer
service center.

Refrigerant is too less.

Inspect leakage in system,
append refrigerant.

Replace the EXV and coil.

Cause of dirty and blocked,
replace the EXV, capillary and
filter. Vacuuming and append
refrigerant if ice blocked.

Inspect if the water flow is
normal, refer to the water flow
malfunction to analysis.

Couldn’t open the EXV.

The EXV, capillary and filter are
dirty, blocked and ice blocked.

The pressure controller is
broken or joint is loose.

Anti-freezing lower pressure
protection.

Inform the customer service
center.

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

Replace the pressure controller,
fixed joint.

Yes

Cause of dirty and
blocked, replace the
EXV, capillary and filter.
Vacuuming and append

Yes

Check if happened
frequently, if yes, please

2) Low pressure protection

76 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

77

High temperature protection of
condenser.

Yes

Clean heat exchanger.

Check the fan motor,
capacitor (1 phase) or
start up water pump.

Empty, vacuuming and
append refrigerant if

Inform the customer service
center.

Yes

Yes

Yes

No

No

No

No

No

Abnormal power supply.

Air is in system, filled too much
refrigerant(Generally happened
after maintenance.)

PCB mistakes to alarm.

Yes

Yes

The fin of heat exchanger is
dirty or aged in cooling mode.

Clean heat exchanger.

Replace PCB.

Replace temperature
sensor.

Check the fan motor,
capacitor (1 phase).

Replace installation
position of unit.

PCB mistakes to alarm.

No

The installation position of unit
results in bad heat transfer of
condenser.

Yes

Yes

Yes

Yes

No

In cooling mode, the fan motor
stop running, reversal and run
slowly.

The temperature sensor of

condenser bring drifting when
collect temperature.

No

No

No

Inform the customer service
center.

Current protection

The fin of heat exchanger is
dirty or aged in cooling mode,
or the shell-tube scaled
strong.

The fan motor stopped running
in cooling mode, reversal and
run slowly. The water pump
didn’t start up or less water
flow in heating.

2) Current protection

Yes

Check power supply,
start up the unit after
normal power supply.

Yes

Replace PCB.

3) High temperature protection of condenser

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Inlet &outlet water temperature
difference protection.

Low temperature anti-freezing
protection of cooling

Inform the customer service
center.

Yes

Replace PCB.

Replace temperature
sensor.

Refer to the water flow
malfunction to analysis.

Yes

Yes

Yes

No

No

No

Water flow is lower.

The outlet water temperature

sensor or inlet water temperature
sensor brought drifting when
collect temperature.

PCB mistakes to alarm.
Replace PCB.

Inform the customer service
center.

PCB mistakes to alarm.

Yes

Yes

Yes

No

No

Water flow is slow.

Yes

Refer to the water flow
malfunction to analysis.

Replace temperature
sensor.

Replace PCB.

Anti-freezing temperature sensor of
cooling evaporator brought drifting

Yes

PCB mistakes to alarm.

Inform the customer service
center.

No

No

No

Low ambient temperature starting
protection in cooling mode.

Yes

Ambient temperature sensor
brought drifting when collect
temperature value.

4) Inlet &outlet water temperature difference protection

5) Low ambient temperature starting up protection

Yes

Replace temperature
sensor.

6) Low temperature anti-freezing protection of cooling evaporator

78 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

79

Power supply phase sequence
malfunction.

Communication malfunction

Yes

Inform the customer service
center.

Phase sequence error.

Lack of phase.

Phase lack protector is broken.

PCB mistakes to alarm.

No

Yes

Adjust connecting wire.

No

No

Yes

Check power supply.

Yes

Yes

Replace phase lack
protector.

Inform the customer service
center.

No power input to unit or wired
controller.

Communicating wire malfunction.

Address repeat.

PCB mistakes to alarm.

The attachments of unit have
strong electromagnetic
interference.

Replace PCB.

Yes

Inspect power supply.

Inspect communicating
wire.

Adjust address.

Yes

Yes

Yes

Reduce electromagnetic
interference.

No

No

No

No

No

7) Power supply phase sequence malfunction

Replace PCB.

No

8) Communication malfunction

Yes

Yes

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Water flow detection malfunction

Yes

Yes

Water pump didn’t open or error.

Didn’t open the valve in system.

No

The water flow detection switch
error.

Inform the customer service
center.

PCB mistakes to alarm.

The water flow switch installed out
of criterion, result in mistaking
work.

Selected the capacity of water
pump is less (flow & head).

Designed the water pipe inner
dimension is too less.

Open the pump or change;
inspect the power supply or
control circuit of pump.

Yes

Yes

Yes

Yes

Yes

Open the valve.

Replace the water flow
switch, inspect the
connecting wire.

Adjust the installation
position.

Replace water pump.

Replace water pipe.

Remove superfluous valve
or forced it is always on.

The filter or water pipe is dirty, the
shell-tube heat exchanger scaled.

Clean filter, water pipe,
shell-tube heat exchanger.

Empty.

Yes

Replace PCB.

No

No

No

No

No

No

Installed the 2-way valve quantity
is more than 50% of indoor unit
quantity.

Air is in water.

9) Water flow detection malfunction

No

Yes

No

Yes

No

Yes

80 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

81

Total outlet water temperature
sensor malfunction

The unit outlet water temperature
sensor malfunction

The circuit of total outlet water
temperature sensor is broken.

Inform the customer service
center.

PCB mistakes to alarm.

The circuit of total outlet water
temperature sensor is shorten.

Fixed joint.

Replace temperature
sensor.

Replace temperature sensor.

The joint of total outlet water
temperature sensor is loose.

Inform the customer service
center.

PCB mistakes to alarm.

The unit’s circuit of outlet water
temperature sensor is broken.

Replace PCB.

Replace temperature sensor.

The unit’s circuit of outlet water
temperature sensor is shorten.

Replace temperature sensor.

The unit’s joint of outlet water
temperature sensor is loose.

Fixed joint.

Yes

No

No

No

No

Yes

Yes

Yes

No

No

No

No

Yes

Yes

Yes

Yes

Yes

10) Total outlet water temperature sensor malfunction

Yes

Replace PCB.

11) The unit outlet water temp. sensor malfunction

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

The unit inlet water temperature
sensor malfunction

Inform the customer service
center.

PCB mistakes to alarm.

The unit’s circuit of inlet water
temperature sensor is broken.

Replace temperature sensor.

The unit’s circuit of inlet water
temperature sensor is shorten.

Replace temperature sensor.

The unit’s joint of inlet water
temperature sensor is loose.

Fixed joint.

No

Yes

Yes

Yes

Yes

No

No

No

Pipe temperature sensor of
condenser malfunction.

Inform the customer service
center.

PCB mistakes to alarm.

The circuit of condenser’s pipe
temperature sensor is broken.

Replace PCB.

Replace temperature sensor.

The circuit of condenser’s pipe
temperature sensor is shorten.

Replace temperature sensor.

The joint of condenser’s pipe
temperature sensor is loose.

Fixed joint.

No

Yes

Yes

Yes

Yes

Yes

No

No

No

12) The unit inlet water temperature sensor malfunction

Yes

Replace PCB.

13) Pipe temp. sensor of condenser malfunction

82 Trouble Shooting

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

83

Ambient temperature sensor
malfunction.

Inform the customer service
center.

PCB mistakes to alarm.

The circuit of ambient temperature
sensor is broken.

Replace temperature sensor.

The circuit of ambient temperature
sensor is shorten.

Replace temperature sensor.

The joint of ambient temperature
sensor is loose.

No

Yes

Yes

Yes

Yes

No

No

No

14) Ambient temperature sensor malfunction

Fixed joint.

Yes

Replace PCB.

Trouble Shooting

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

13．Installation

13.1 Unit Installation

13.1.1 Transportation

The angle of inclination should not be more than 15º when carrying the unit, to avoid overturn of the unit.
a. Rolling handling: several rolling rods of the same size are placed under the base of the unit, and the

length of each rod must be more than the outer frame of the base and suitable for balancing of the unit.
b. Lifting: the strength lifting rope (belt) can bear should be 4 times the weight of the unit. Check the lifting

hook and ensure that it is firmly attached to the unit, and the lifting angle should be more than 60º. To avoid
damages to 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. Any person is not allowed to stand below the unit when lifting it.

25/35/65/80/130kW module

Hoisting rope

Lifting hole

13.1.2 Installation space

● Requirements of arrangement space of the unit

Lifting equipment

The position should be provided with an at
least 50mm thick wood block, cloth or hard
paper, to avoid damages to the unit.

Lifting hole

1) To ensure adequate airflow entering the condenser, the influence of descending airflow caused by the
high-rise buildings around upon the unit should be taken into account when installing the unit.

2) If the unit is installed where the flowing speed of air is high, such as on the exposed roof, the measures
including sunk fence and Persian blinds can be taken, to prevent the turbulent flow from disturbing the air
entering the unit. If the unit needs to be provided with sunk fence, the height of the latter should not be more
than that of the former; if Persian blinds are required, the total loss of static pressure should be less than the
static pressure outside the fan. The space between the unit and sunk fence or Persian blinds should also
meet the requirement of the minimum installation space of the unit.

3) If the unit needs to operate in winter, and the installation site may be covered by snow, the unit should be
located higher than the snow surface, to ensure that air flows through the coils smoothly.

84 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

85

Series

C D E

SS

≥2000

≥1500

≥8000

Series

Model

Max unit combined

quantity

L(mm)

M(mm)

N(mm)

SS

MDC

-SS35/RN1L

16

≥600

≥300

≥300

MDC

-SS65/RN1L

16

≥600

≥300

≥300

MDC

-SS80/RN1L

16

≥600

≥300

≥300

MDC

-SS130/RN1

16

≥600

≥300

≥300

25/35/65/80/130kW module

B

A

unit

C

The recommend space parameter

Input of airflow

D

Input of airflow

A B

≥1500

≥2000

E

Installation space (mm)

InputofairflowInputofairflow

unit

● Space requirements for parallel installation of multiple scroll units

To avoid back flow of the air in the condenser and operational faults of the unit, the parallel installation of
multiple scroll units can follow the direction A and D as shown in the figure above, the spaces between the
unit and the obstacle are given in the figure above, and the space between adjacent scroll units should not
be less than 300mm; the installation can also follow the direction B and C as shown in the figure above, the
spaces between the unit and the obstacle are given in the figure above, and the space between adjacent
scroll units should not be less than 600mm; the installation can also follow the direction combination of A
and D, and B and C, the spaces between the unit and the obstacle are given in the figure above, the space
between adjacent scroll units in the direction A and D should not be less than 300mm, and the space
between adjacent scroll units in the direction B and C should not be less than 600mm.
If the spaces mentioned above cannot be met, the air passing from the unit to the coils may be restricted, or
back flow of air discharge may occur, and the performance of the unit may be affected, or the unit may fail to
operate.

13.1.3 Installation foundation

 The unit should be located on the horizontal foundation, the ground floor or the roof which can bear

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Series

Model

R1

R2

R3

R4

R5

R6

SS

MDC

-SS35/RN1L

81

81

89

89 / /

MDC

-SS65/RN1L

140

130

170

150 / /

MDC

-SS80/RN1L

170

210

170

160 / /

MDC

-SS130/RN1

200

320

230

370 / /

operating weight of the unit and the weight of maintenance personnel. Refer to the operating weight
parameters in specification table.

 If the unit is located so high that it is inconvenient for maintenance personnel to conduct maintenance,

the suitable scaffold can be provided around the unit.

 The scaffold must be able to bear the weight of maintenance personnel and maintenance facilities.
 The bottom frame of the unit is not allowed to be embedded into the concrete of installation foundation.

Location drawing of installation foundation of the unit (unit: mm)

25/35kW module

Drainage channel

Drainage channel

268

370

96

788

Anchor bolt

1460

Anchor bolt

1460

880

65/80kW module

862

130kW module

Concrete Cement mortarDrainage channel

80

Concrete Cement mortarDrainage channel

80

Drainage channel

Load distribution

Anchor bolt

1017

Concrete Cement mortarDrainage channel

80

Unit: kg

86 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

87

Step

Content

1

Make sure that the flatness of the concrete foundation is within ±3mm, and then place the unit on the
cushion block.

2

Raise the unit to the height suitable for installation of the damping device. Remove the clamp nuts of the
damper.

3

Place the unit on the damper, and align the fixing bolt holes of the damper with the fixing holes on the unit
base.

4

Return the clamp nuts of the damper to the fixing holes on the unit base, and tighten them into the damper.

5

Adjust the operational height of the damper base, and screw down the leveling bolts. Tighten the bolts by
one circle to ensure equal height adjustment variance of the damper.

6

The lock bolts can be tightened after the correct operational height is reached.

65/80kW

130kW

35kW

13.1.4 Installation of damping devices

※ Damping devices must be provided between the unit and its foundation.

By means of the Φ15mm diameter installation holes on the steel frame of the unit base, the unit can be
fastened on the foundation through the spring damper. See figure above (Schematic diagram of installation
dimension of the unit) for details about center distance of the installation holes. The damper does not go with
the unit, and the user can select the damper according to the relevant requirements. When the unit is
installed on the high roof or the area sensitive to vibration, please consult the relevant persons before
selecting the damper.

※ Installation steps of the damper

Installation bolt M12

Nut

Damping device

Ferrol

Fixed meatal

plate

13.2 Water System Installation

Notice:

● After the unit is in place, chilled water pipes can be laid.

● The relevant installation regulations should be abided with when conducting connection of water pipes.

● The pipelines should be free of any impurity, and all chilled water pipes must conform to local rules and

regulations of pipeline engineering.

13.2.1 Connection requirements of chilled water pipes

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

a. 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 to or into the heat exchanger.

b. Water must enter the heat exchanger through the inlet; otherwise the performance of the unit will decline.
c. The inlet pipe of the evaporator must be provided with a water flow switch, to realize flow-break protection

for the unit. Both ends of the water flow switch must be supplied with horizontal straight pipe sections whose
diameter is 5 times that of the inlet pipe. The water flow switch must be installed in strict accordance with
“Installation & Regulation Guide for Water flow switch”. The wires of the water flow switch should be led to
the electric cabinet through shielded cable. The working pressure of the water flow switch is 1.0MPa, and its
interface is 1 inch in diameter. After the pipelines are installed, the water flow switch will be set properly
according to the rated water flow of the unit.

d. The pump installed in the water pipeline system should be equipped with starter. The pump will directly
press water into the heat exchanger of the water system.

e. The pipes and their ports must be independently supported but should not be supported on the unit.
f. The pipes and their ports of the heat exchanger should be easy to disassemble for operation and cleaning,

as well as inspection of port pipes of the evaporator.
g. 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 be under heat preservation.
h. The by-pass pipes and by-pass valves as shown in the figure of “Connection drawing of pipeline

system” must be mounted for the heat exchanger, to facilitate cleaning of the outside system of water
passage before the unit is adjusted. During maintenance, the water passage of the heat exchanger can be
cut off without disturbing other heat exchangers.

i. The flexible ports should be adopted between the interface of the heat exchanger and on-site pipeline, to
reduce transfer of vibration to the building.

j. To facilitate maintenance, the inlet and outlet pipes should be provided with thermometer or manometer.
The unit is not equipped with pressure and temperature instruments, so they need to be purchased by the
user.

k. All low positions of the water system should be provided with drainage ports, to drain water in the
evaporator and the system completely; and all high positions should be supplied with discharge valves, to
facilitate discharging air from the pipeline. The discharge valves and drainage ports should not be under
heat preservation, to facilitate maintenance.

l. All possible water pipes in the system to be chilled should be under heat preservation, including inlet pipes
and flanges of the heat exchanger.

m. The outdoor chilled water pipelines should be wrapped with an auxiliary heating belt for heat preservation,
and the material of the auxiliary heat belt should be PE, EDPM, etc., with thickness of 20mm, to prevent the
pipelines from freezing and thus cracking under low temperature. The power supply of the heating belt
should be equipped with an independent fuse.

n. When the ambient temperature is lower than 2℃, and the unit will be not used for a long time, water inside
the unit should be drained. If the unit is not drained in winter, its power supply should not be cut off, and the
fan coils 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.

o. The common outlet pipelines of combined units should be provided with mixing water temperature sensor.
Warning:

● For the water pipeline network including filters and heat exchangers, dreg or dirt may seriously damages

the heat exchangers and water pipes.

● The installation persons or the users must ensure the quality of chilled water, and de-icing salt mixtures
and air should be excluded from the water system, since they may oxidize and corrode steel parts inside the
heat exchanger.

13.2.2 Connection drawing of pipeline system

88 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

89

PH
value

Total
hardness

Conductivity

Sulfide
ion

Chloride
ion

Ammonia
ion

Sulfate
ion

Silicon

Iron
content

Sodium ion

Calcium
ion

7～

8.5

<50ppm

<20μV/cm(25℃)

No

<50ppm

No

<50ppm

<30ppm

<0.3ppm

No
requirement

<50ppm

25/35/65/80/130kW module

Expansion tank

Water replenishing

Dirt discharge valve

unit

Differential pressure by-pass valve

unit

Drain valve

Auxiliary electric heater

Two-way valve

Three-way valve

Terminal

13.2.3 Water quality

※Water quality control

When industrial water is used as chilled water, little furring may occur; however, well water or river water,
used as chilled water, may cause much sediment, such as furring, sand, and so on. Therefore, well water or
river water must be filtered and softened in softening water equipment before flowing into chilled water
system. If sand and clay settle in the evaporator, circulation of chilled water may be blocked, and thus
leading to freezing accidents; if hardness of chilled water is too high, furring may occur easily, and the
devices may be corroded. Therefore, the quality of chilled water should be analyzed before being used, such
as PH value, conductivity, concentration of chloride ion, concentration of sulfide ion, and so on.

※ Applicable standard of water quality for the unit

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Quality of glycol（%）

modification coefficient

Freezing

point ℃

Cooling capacity

modification

Power

modification

Water

resistance

Water flow

modification

0

1.000

1.000

1.000

1.000

0

10

0.984

1.118

1.019

-4.000

20

0.973

1.268

1.051

-9.000

30

0.965

1.482

1.092

-16.000

40

0.960

1.791

1.145

-23.000

50

0.950

2.100

1.200

-37.000

Quality of glycol

（%）

Modification coefficient

Freezing

point ℃

Cooling capacity

modification

Water

resistance

Water flow

modification

0

1.000

1.000

1.000

0

10

0.976

1.071

1.000

-3.000

20

0.961

0.992

1.189

1.016

-7.000

30

0.948

0.988

1.380

1.034

-13.000

40

0.938

0.984

1.728

1.078

-22.000

50

0.925

0.975

2.150

1.125

-35.000

13.2.4 Performance adjustment factors

The antifreeze must be required according to anyone condition as following:

1. The outlet water temperature is below 5℃;

2. The ambient temperature is below 0

℃;

3. Don’t start up the unit for a long time.

4. The power supply was cut off and needn’t change the water in system.

Ethylene and Propylene Glycol Factors

A glycol solution is required when the unit with condition as mentioned. The use of glycol will reduce the
performance of the unit depending on concentration.

Ethylene Glycol

0.998

0.995

0.992

0.989

0.983

Propylene Glycol

Power

modification

1.000

0.996

Units operating with glycol solutions are not included in the ARI Certification Program.

Altitude correction factors

Performance tables are based at sea level. Elevations other than sea level affect the performance of the unit.
The decreased air density will reduce condenser capacity and reduce the unit’s performance. For
performance at elevations other than sea level refer to Table 3. Maximum allowable altitude is 1800meters.

Evaporator temperature drop factors

Performance tables are based on a 5oC temperature drop through the evaporator. Adjustment factors for
applications with temperature ranges from 3℃ to 6℃ in follow table. Temperature drops outside this range
can affect the control system’s capability to maintain acceptable control and are not recommended.

Fouling factor

Fouling refers to the accumulation of unwanted material on solid surfaces, most often in an aquatic
environment. The fouling material can consist of either living organisms (biofouling) or a non-living
substance (inorganic or organic). Fouling is usually distinguished from other surface-growth phenomena in
that it occurs on a surface of a component, system or plant performing a defined and useful function, and
that the fouling process impedes or interferes with this function.

Other terms used in the literature to describe fouling include: deposit formation, encrustation, crudding,
deposition, scaling, scale formation, slagging, and sludge formation. The last six terms have a more narrow
meaning than fouling within the scope of the fouling science and technology, and they also have meanings
outside of this scope; therefore, they should be used with caution.

90 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

91

ALTITUDE

(m)

Difference of water
inlet and outlet temp.
(℃)

Fouling Factor

0.018℃ /kW

0.044m 2 ℃ /kW

0.086m 2 ℃/kW

0.172m 2 ℃/kW

C P C P C P C

P

Sea level

3

1.036

1.077

1.019

1.076

0.991

0.975

0.963

0.983

4

1.039

1.101

1.022

1.080

0.994

0.996

0.971

0.984

5

1.086

1.000

1.000

0.977

0.989

6

1.093

1.006

1.004

0.983

0.994

600

3

1.064

0.980

0.984

0.951

0.991

4

1.068

0.983

1.005

0.959

0.992

5

1.074

0.989

1.009

0.965

0.997

6

1.084

0.998

1.009

0.973

0.999

1200

3

1.052

0.969

1.011

0.942

1.002

4

1.055

0.971

1.012

0.948

1.003

5

1.063

0.979

1.015

0.955

1.005

6

1.031

1.125

1.015

1.072

0.987

1.018

0.962

1.007

1800

3

1.002

1.128

0.986

1.042

0.959

1.021

0.935

1.007

4

1.005

1.129

0.989

1.045

0.962

1.022

0.941

1.010

5

1.012

1.132

0.995

1.051

0.968

1.024

0.945

1.012

6

1.018

1.134

1.001

1.058

0.974

1.026

0.949

1.014

Fouling phenomena are common and diverse, ranging from fouling of ship hulls, natural surfaces in the
marine environment (marine fouling), fouling of heat-transfer components through ingredients contained in
the cooling water or gases, and even the development of plaque or calculus on teeth, or deposits on solar
panels on Mars, among other examples.

Foreign matter in the chilled water system will adversely affect the heat transfer capability of the evaporator,
and could increase the pressure drop and reduce the water flow. To provide optimum unit operation, proper
water treatment must be maintained. Refer to the able as following.

Fouling Factor

1.045 1.105 1.028

1.051 1.109 1.034

1.024 1.087 1.008

1.027 1.111 1.011

1.034 1.115 1.017

1.043 1.115 1.026

1.013 1.117 0.996

1.015 1.118 0.998

1.023 1.122 1.006

C--Cooling capacity
P--Power

13.2.5 Installation & regulation guide for water flow switch

● Please carefully check flow switches before conducting installation of the water flow switch. Packing
should be in good condition, and the appearance should be free of damage and deformation. If any problem,
please contact the manufacturer.

● Flow switches can be installed in the horizontal pipeline or the vertical pipeline with upward flowing
direction but cannot be mounted in the pipeline with downward flowing direction. The inlet water of gravity
should be taken into account when flow switches are installed in the pipeline with upward flowing direction.

● Water flow switch must be installed on a section of straight-line pipeline, and its both ends must be
supplied with straight-line pipes whose length is at least 5 times diameter of the pipe. In the meanwhile, the
fluid flowing direction in the pipeline must be consistent with the direction of arrow on the controller. The
connection terminal should be located where wiring connection can be easily done.

● Pay attention to the following items when conducting installation and wire connection:
a. Collision of the wrench with the soleplate of the flow switch is prohibited, since such collision may cause

deformation and failure of the flow switch.

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

b. To avoid electric shock and damages to the devices, the power supply should be cut off, when wires are
connected or adjustment is done.

c. When wiring connection is conducted, adjustment of other screws except connection terminals of micro
switches and ground screws is prohibited. In the meanwhile, over great force should not applied when wires
of micro switches are connected, otherwise micro switches may suffer displacement, thus leading to failure
of flow switches.

d. Special grounding screws should be used for earth connection. Bolts should not be installed or removed
at will; otherwise flow switches may suffer deformation and failure.

e. Flow switches have been set at minimal flow value before leaving the factory. They should not be adjusted
below the setting value at the factory, or they may suffer failure. After installing flow switches, please press
the flow switch lever several times to check them. When the lever is found not to respond with “clatter”,
rotate the screw in a clockwise direction, until “clatter” occurs.

f. Be sure to determine the model of target slice according to the rated flow of the unit, the diameter of the
outlet pipe and the adjustment range of the target slice of the flow switch. Besides, the target slice should not
contact with other restrictors in the pipeline or on the inner wall of the pipeline, or the flow switch cannot be
reset normally.

● Determine whether the flow switch and the system connected with it are in good operation according to the
measured value by flow meter, namely, when the measured value on flow meter is less than 60% of rated
water flow of the unit, the water flow switch should be cut off and observed for 3 working periods, and it
should be covered with flow switch shell timely.

Schematic diagram of water flow switch

13.2.6 Installation of water system pipeline for 25/35kW module
Installation of single-module water system pipeline

25/35kW module

Electric control box

Total water outlet

temperature sensor

Water outlet

Water inlet

Installation of multi-module water system pipeline

n :the module quantity, max 16

92 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

93

p

N

No.1modul

No.(n-1)modul

p

o.n module

e

e

No.(n-1) address

Pum

No.(n-2) address No.0 address

13.2.7 Installation of water system pipeline for 65/80kW module

Installation of single-module water system pipeline

Total water outlet temperature sensor

Electric control box

Installation of multi-module water system pipeline

Drill dead hole at the
position, and move the
total effluent temperature
sensor at No.0 address to

the position

Water flow switch

Water outletWater inlet

n : the module quantity, max 16

No.n module

No.(n-1) address

Pum

No.(n-2) address No.0 address

Installation mode A: less than 16 modules

13.2.8 Installation of water system pipeline for 130kW module

Installation of single-module water system pipeline

Total water outlet temperature sensor

No.1 moduleNo.(n-1) module

Drill dead hole at the
position, and move the
total effluent temperature
sensor at No.0 address to
the position

Water flow switch

Electric control box

Water outletWater inlet

Installation of multi-module water system pipeline
n : the module quantity, max 16

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

p

Unit model x quantity

Total inlet and outlet water

pipe diameter

Unit model x quantity

Total inlet and outlet water

pipe diameter

25×1

DN40

25×9

DN100

25×2

DN65

25×3

25×4

DN80

DN125

25×5

25×6

25×7

DN100

25×8

Unit model x quantity

Total inlet and outlet water

pipe diameter

Total inlet and outlet water

pipe diameter

35×1

DN40

DN100

35×2

DN65

35×10

35×3

35×11

35×4

DN80

35×12

DN125

35×5

35×13

35×6

35×14

35×7

DN100

35×15

35×8

35×16

Unit model x quantity

Total inlet and outlet water

pipe diameter

Unit model x quantity

Total inlet and outlet water

pipe diameter

65×1

DN65

65×9

DN125

65×2

65×10

65×3

DN80

65×11

DN150

65×4

DN100

65×12

65×5

65×13

65×6

65×14

65×7

DN125

65×15

DN200

65×8

65×16

Unit model x quantity

Total inlet and outlet water

pipe diameter

Unit model x quantity

Total inlet and outlet water

pipe diameter

130×1

DN65

130×9

DN200

130×2

DN80

130×10

130×3

DN100

130×11

130×4

DN125

130×12

DN250

130×5

130×13

130×6

DN150

130×14

DN250

130×7

130×15

130×8

DN200

130×16

No.n module

No.1 moduleNo.(n-1) module

No.(n-1) address

Pum

No.(n-2) address No.0 address

Installation mode A: less than 16 modules

13.2.9 Diameter parameters of main inlet and outlet pipes

Table of diameter parameters of main inlet and outlet pipes for 25kW module

25×10
25×11
25×12
25×13
25×14
25×15
25×16

Drill dead hole at the
position, and move the
total effluent temperature
sensor at No.0 address to
the position

Water flow switch

Table of diameter parameters of main inlet and outlet pipes for 35kW module

Unit model x quantity

35×9

Table of diameter parameters of main inlet and outlet pipes for 65kW module

Table of diameter parameters of main inlet and outlet pipes for 130kW module

94 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

95

Series

Model

Water flow rate(m3/h)

Minimum

Maximum

SS

MDC

-SS35/RN1L 5.4

6.6

MDC

-SS65/RN1L 10.08

12.32

MDC

-SS80/RN1L 12.42

15.18

MDC

-SS130/RN1 20.16

24.64

Please pay attention to the following items when installing multiple modules:

● Each module corresponds to an address code which cannot be repeated.

● Main water outlet temperature sensing bulb, water flow switch and auxiliary electric heater are under

control of the main module.

● One wired controller and one water flow switch are required and connected on the main module.

● The unit can be started up through the wired controller only after all addresses are set and the

aforementioned items are determined. The wired controller is ≤50m away from the outdoor unit.

13.2.10 Chilled water flow

Minimum chilled water flow

The minimum chilled water flow is shown in the below table.
If the system flow is less than the minimum unit flow rate, the evaporator flow can be recalculated, as shown

in the diagram.

For minimum chilled water flow rate

For maximum chilled water flow rate

Evaporator

Recirculation

Recirculation

Evaporator

Maximum chilled water flow

The maximum chilled water flow is limited by the permitted pressure drop in the evaporator. It is provided in
the below table.

If the system flow is more than the maximum unit flow rate, bypass the evaporator as shown in the diagram
to obtain a lower evaporator flow rate.

Minimum and Maximum water flow rates

13.2.11 Design of the store tank in the system

a. kW is the unit for cooling capacity, L is the unit for (G) minimum water flow volume in the formula.
Comfortable type air conditioner
G= cooling capacity×2.6L
Process type cooling
G= cooling capacity×7.4L

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Error

Recommendation

b. In certain occasion (especially in manufacture cooling process), for conforming the system water content
requirement, it’s necessary to mount a tank equipping with a cut-off baffle at the system to avoid water
short-circuit, Please see the following schemes:

Error

Recommendation

Error

Recommendation

13.2.12 Design of expansion tank

If a closed expansion tank with its filled volume of air is too small, the system pressure will easily exceed the
maximum allowable pressure and cause water to discharge from the pressure relief valve, thus wasting
water. If the closed tank is too large, when the water temperature drops, the system pressure may decrease
to a level below the minimum allowable value and cause trouble in the air vent. Therefore, accurate sizing of
a closed expansion tank is essential.

For diaphragm expansion tanks, the minimum volume of the water tank, Vt, gal(m3),can be calculated by the
following formula, recommended by ASHRAE Handbook 1996, HVAC Systems and Equipment:

Vt=Vs v2/v1-1-3α(T2-T1)

1-p1/p2

T1=lower temperature,oF (℃)

T2=higher temperature, oF (℃)
Vs=volume of water in system, gal(m3)

p1=absolute pressure at lower temperature,psia(kPa abs.)
p2=absolute pressure at higher temperature,paia(kPa abs.)
v1,v2=specific volume of water at lower and higher temperature, respectively, ft3/lb(m3/kg)

α=linear coefficient of thermal expansion; for steel, α=6.5x10-6in./in·oF(1.2x10-5per ℃); for copper,
α=9.5x10-6in./in·oF(1.7x10-5per ℃)

In a chilled water system, the higher temperature T2 is the highest anticipated ambient temperature when
the chilled water system shuts down during summer. The lower temperature in a heating system is often the
ambient temperature at fill conditions(for example, 50 oF or 10℃).

13.2.13 Selection and installation of the pump

(1)Select the pump

a. Select the water-flow of the pump
The rated water-flow must no less than the unit rated water-flow; in terms of multi-connect the units, that

water-flow must no less than total units’ rated water-flow.
b. Select the left of the pump.
H=h1+h2+h3+h4
H: The lift of the pump.

96 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

97

Series

Model

Outdoor power supply

Wiring

Power supply

Manual switch

Fuse

SS

MDC

-SS35/RN1L

380-415V 3Ph～50Hz

50A

36A

10mm2
(<30m)

MDC

-SS65/RN1L

380-415V 3Ph～50Hz

125A

100A

16mm2
(<20m)

MDC

-SS80/RN1L

380-415V 3Ph～50Hz

150A

100A

16mm2
(<20m)

MDC

-SS130/RN1

380-415V 3Ph～50Hz

200A

150A

Base on the actual distance

of the wire, more than 35

mm2 for each module

h1: Main unit water resistance.
h2: Pump water resistance.
h3: Water resistance of the longest water-loop distance, includes: pipe resistance, different valve’s

resistance, flexible pipe resistance, pipe elbow and three-way resistance, two-way resistance or three-way
resistance, as well as filter resistance.

H4: the longest terminal resistance.
(2) Installation the pump
a. The pump should be installed at the water inlet pipe, both of which sides must mount the soft connectors

for vibration-proof.
b. The backup pump for the system (recommended).
c. Units must with a main unit controls (Please see “fielding wiring” for the controls diagram).

13.3 Wiring Installation

All wiring installation should be done by qualified person.

13.3.1 Precautions:

1. The air-conditioner should apply special power supply, whose voltage should conform to rated voltage.

2. Wiring construction must be conducted by the professional technicians according to the labeling on the

circuit diagram.

3. Only use the electric components specified by our company, and require installation and technical

services from the manufacturer or authorized dealer. If wiring connection fails to conform to electric
installation norm, failure of the controller, electronic shock, and so on may be caused.

4. The connected fixed wires must be equipped with full switching-off devices with at least 3mm contact

separation.

5. Set leakage protective devices according to the requirements of national technical standard about electric

equipment.

6. After completing all wiring construction, conduct careful check before connecting the power supply.

7. Please carefully read the labels on the electric cabinet.

8. The user’s attempt to repair the controller is prohibited, since improper repair may cause electric shock,

damages to the controller, and so on. If the user has any requirement of repair, please contact the
maintenance center.

13.3.2 Power supply specification

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

13.3.3 Requirements of wiring connection

● No additional control components are required in the electric cabinet (such as relay, and so on), and the

power supply and control wires not connected with the electric cabinet are not allowed to go through the
electric box. Otherwise, electromagnetic interference may cause failure of the unit and control components
and even damages to them, which thus lead to protective failure.

● All cables led to the electric box should be supported independently but by the electric box.

● The strong current wires generally pass the electric box, and 220V alternating current may also pass the

control board, so wiring connection should conform to the principle of separation of strong current and weak
current, and the wires of power supply should be kept more than 100 mm away from the control wires.

● Only use 380-415V 3Ph~ 50Hz rated power supply for the unit, and the maximum allowable range of

voltage is 342V-418V.

● All electric wires must conform to local wiring connection norm. The suitable cables should be connected

to power supply terminal through wiring connection holes at the bottom of the electric cabinet. According to
Chinese standard, the user is responsible for providing voltage and current protection for the input power
supply of the unit.

● All power supplies connected to the unit must pass one manual switch, to ensure that the voltages on all

nodes of electric circuit of the unit are released when the switch is cut off.

● The cables of correct specification must be used to supply power for the unit. The unit should use

independent power supply, and the unit is not allowed to use the same power supply together with other
electric devices, to avoid over-load danger. The fuse or manual switch of the power supply should be
compatible with working voltage and current of the unit. In case of parallel connection of multiple modules,
the requirements of wiring connection mode and configuration parameters for the unit are shown in the
following figure.

● Some connection ports in the electric box are switch signals, for which the user needs to provide power,

and the rate voltage of the power should be 220-230V AC. The user must be aware that all power supplies
they provided should be obtained through power circuit breakers (provided by the user), to ensure that all
voltages on the nodes of the provided power supply circuit are released when the circuit breakers are cut off.

● All inductive components provided by the user (such as coils of contactor, relay, and so on) must be

suppressed with standard resistance-capacitance suppressors, to avoid electromagnetic interference, thus
leading to failure of the unit and its controller and even damages to them.

● All weak current wires led to the electric box must apply shielded wires, which must be provided with

grounding wires. The shield wires and power supply wires should be laid separately, to avoid
electromagnetic interference.

● The unit must be provided with grounding wires, which are not allowed to be connected with the grounding

wires of gas fuel pipelines, water pipelines, lightning conductors or telephones. Improper earth connection
may cause electric shock, so please check whether earth connection of the unit is firm or not frequently.

Note: 25/35/65/80/130kW module only 16 scroll units can be combined at most.

98 Installation

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

99

Step

Content

1

Check the unit and ensure that it is connected with grounding wires correctly, to avoid leakage, and the
grounding devices should be mounted in strict accordance with the requirements of electrical engineering rules.
The grounding wires can prevent electric shock.

2

The control box of the main power switch must be mounted in a proper position.

3

Wiring connection holes of the main power should be provided with glue cushion.

4

The main power and neutral wires and grounding wires of power supply are led into the electric box of the unit.

5

The wires of the main power must pass the bonding clamp.

6

Wires should be connected firmly to the connection terminals A,B,C , N.

7

Phase sequences must be consistent when the wires of the main power.

8

The main power should be located out of easy reach of non-professional maintenance personnel, to avoid
mal-operation and improve safety.

9

Connection of control wires of water flow switches: the wire leads (prepared by the user) of water flow switches
are connected to the connection terminals W1 and W2 of the main unit.

10

Power supply (220-240V~50Hz)

11

Power supply (220-240V~50Hz)

12

The connection way of the wired controller connects with every signal wires from package units: signal wires P,
Q, E are connected in the same way of main wires connection method and accordingly connect to the terminals
P, Q, E in the wired controller.

13.3.4 Wiring steps

Connection of control wires of auxiliary electric heaters: the control wires of AC contactor of the auxiliary electric
heater must pass the connection terminals H1 and H2 of the main unit, as shown.

H2

H1

Overcurrent relay

Control coil ofAC contactor

Connection of control wires of pump: the control wires of AC contactor of the pump must pass the connection
terminals P1 and P2 of the main unit, as shown.

P2

Switch (For trial run of pump)

P1

Overcurrent relay

Control coil ofAC contactor

Installation

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

“ON/OFF” port

T/COOL” por

1 .Wiring of “ON/OFF” weak electric port

○

Corresponding parallel connect the “ON/OFF”(dry contact input signal) port of the main unit’s electric control
box, then, connect the “ON/OFF” signal (provide by user) to the “ON/OFF” port of main unit as follows.

0# electric

control box

Red

ON/OFF signal

Main control board is provided

2 .Remote mode selection: Wiring of “HEAT/COOL” weak electric port

○

Corresponding parallel connect the “HEAT/COOL” (dry contact input signal) port of the main unit’s electric
control box, then, connect the “ON/OFF” signal (provide by user) to the “HEAT/COOL” port of main unit as
follows.

0# electric
control box

“HEA

ON/OFF signal

Main control board is provided

3 .Wiring of “ALARM” port

○

Connect the device provided by user to the “ALARM” (dry contact output signal) ports of the module units as
follows.

electriccontrolbox

“ALARM” port

Blue

t

Brown

Black

Red

byuser

If the unit is operating normally, the ALARM port is closed, otherwise, the ALARM port is not closed.

100 Installation

Deviceprovided

Red

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

101

14．Commissioning

1. Preparation

● After the water system pipeline is flushed several times, please make sure that the purity of water meets

the requirements; the system is re-filled with water and drained, and the pump is started up, then make sure
that water flow and the pressure at the outlet meet the requirements.

● The unit is connected to the main power 12 hours before being started up, to supply power to the heating

belt and pre-heat the compressor. Inadequate pre-heating may cause damages to the compressor.

● Setting of the wired controller. See details of the manual concerning setting contents of the controller,

including such basic settings as refrigerating and heating mode, manual adjustment and automatic
adjustment mode and pump mode. Under normal circumstances, the parameters are set around standard
operating conditions for trial run, and extreme working conditions should be prevented as much as possible.

● Carefully adjust the water flow switch on the water system or the inlet stop valve of the unit, to make the

water flow of the system accord with the water flow in specification table.

2. Test run

6.3.1 Start up the controller and check whether the unit displays a fault code. If a fault occurs, remove the

fault first, and start the unit according to the operating method in the “unit control instruction”, after

determining that there is no fault existing in the unit.

6.3.2 Conduct trial run for 30 min. When the influent and effluent temperature becomes stabilized, adjust the

water flow to nominal value, to ensure normal operation of the unit.

6.3.3 After the unit is shut down, it should be put into operation 10 min later, to avoid frequent start-up of the

unit. In the end, check whether the unit meets the requirements in specification table.

Notices:

● The unit can control start-up and shut-down of the unit, so when the water system is flushed, the operation

of the pump should not be controlled by the unit.

● Do not start up the unit before draining the water system completely.

● The water flow switch must be installed correctly. The wires of the water flow switch must be connected

according to electric control schematic diagram, or the faults caused by water breaking while the unit is in

operation should be the user’s responsibility.

● Do not re-start the unit within 10 min after the unit is shut down during trial run.

● When the unit is used frequently, do not cut off the power supply after the unit is shut down; otherwise the

compressor cannot be heated, thus leading to its damages.

● If the unit is not in service for a long time, and the power supply needs to be cut off, the unit should be

connected to the power supply 12 hours prior to re-starting of the unit, to pre-heat the compressor.

Commissioning

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

15．Maintenance

Maintenance for main components：

● Close attention should be paid to the discharge and suction pressure during the running process. Find out

reasons and eliminate the failure if abnormality is found.

● Control and protect the equipment. See to it that no random adjustment be made on the set points on site.

● Regularly check whether the electric connection is loose, and whether there is bad contact at the contact

point caused by oxidation and debris etc., and take timely measures if necessary. Frequently check the work
voltage, current and phase balance.

● Check the reliability of the electric elements in time. Ineffective and unreliable elements should be

replaced in time.

Removing scale

After long-time operation, calcium oxide or other minerals will be settled in the heat transfer surface of the
water-side heat exchanger. These substances will affect the heat transfer performance when there is too
much scale in the heat transfer surface and sequentially cause that electricity consumption increases and
the discharge pressure is too high (or suction pressure too low). Organic acids such as formic acid, citric
acid and acetic acid may be used to clean the scale. But in no way should cleaning agent containing chlorine
acid or fluoride should be used as the water-side heat exchange is made from stainless steel and is easy to
be eroded to cause refrigerant leakage. Pay attention to the following aspects during the cleaning and
scale-removing process:

● Water-side heat exchanger should be done be professionals.

● Clean the pipe and heat exchanger with clean water after cleaning agent is used. Conduct water treatment

to prevent water system from being eroded or re-absorption of scale.

● In case of using cleaning agent, adjust the density of the agent, cleaning time and temperature according

to the scale settlement condition.

● After pickling is completed, neutralization treatment needs to be done on the waste liquid. Contact relevant

company for treating the treated waste liquid.

● Protection equipment (such as goggles, gloves, mask and shoes) must be used during the cleaning

process to avoid breathing in or contacting the agent as the cleaning agent and neutralization agent is
corrosive to eyes, skins and nasal mucosa.

Winter shutdown

For shutdown in winter, the surface of the unit outside and inside should be cleaned and dried. Cover the
unit to prevent dust. Open discharge water valve to discharge the stored water in the clean water system to
prevent freezing accident (it is preferable to inject antifreeze in the pipe).

Replacing parts

Parts to be replaced should be the ones provided by our company. Never replace any part with different part.

First startup after shutdown

The following preparations should be made for re-startup of unit after long-time shutdown:

1) Thoroughly check and clean the unit.

2) Clean water pipe system.

3) Check pump, control valve and other equipment of water pipe system.

4) Fix connections of all wires.

5) It is a must to electrify the machine before startup.

Refrigeration system

Determine whether refrigerant is needed by checking the value of suction and discharge pressure and check
whether there is a leakage. Air tight test must be made if there is a leakage or part of refrigerant system is to
be replaced. Take different measures in the following two different conditions from refrigerant injection.

1) Total leakage of refrigerant. In case of such situation, leakage detection must be made on the pressurized

nitrogen used for the system. If repair welding is needed, welding cannot be made until all the gas in the
system is discharged. Before injecting refrigerant, the whole refrigeration system must be completely dry
and of vacuum pumping.

102 Maintenance

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

103

● Connect vacuum pumping pipe at the fluoride nozzle at low-pressure side.

● Remove air from the system pipe with vacuum pump. The vacuum pumping lasts for above 3 hours.

Confirm that the indication pressure in dial gauge is within the specified scope.

● When the degree of vacuum is reached, inject refrigerant into the refrigeration system with refrigerant

bottle. Appropriate amount of refrigerant for injection has been indicated on the nameplate and the table of
main technical parameters. Refrigerant must be injected from the low pressure side of system.

● The injection amount of refrigerant will be affected by the ambient temperature. If the required amount

has not been reached but no more injection can be done, make the chilled water circulate and start up the
unit for injection. Make the low pressure switch temporarily short circuit if necessary.

2) Refrigerant supplement. Connect refrigerant injection bottle on the fluoride nozzle at low-pressure side

and connect pressure gauge at low pressure side.

● Make chilled water circulate and start up unit, and make the low pressure control switch short circuit if

necessary.

● Slowly inject refrigerant into the system and check suction and discharge pressure.

Disassembling compressor

Follow the following procedures if compressor needs to be disassembled:

1) Cut off the power supply of unit.

2) Remove power source connection wire of compressor.

3) Remove suction and discharge pipes of compressor.

4) Remove fastening screw of compressor.

5) Move the compressor.

Auxiliary electric heater

When the ambient temperature is lower than 2 ℃, the heating efficiency decreases with the decline of the
outdoor temperature. In order to make the air-cooled heat pump stably run in a relatively cold region and
supplement some heat lost due to de-frosting. When the lowest ambient temperature in the user’s region in
winter is within 0℃~10℃, the user may consider to use auxiliary electric heater. Please refer to relevant
professionals for the power of auxiliary electric heater.

System anti-freezing

In case of freezing at the water-side heat exchanger interval channel, severe damage may be caused, i.e.
heat exchange may be broken and appears leakage. This damage of frost crack is not within the warranty
scope, so attention must be paid to anti-freezing.

1) If the unit that is shut down for standby is placed in an environment where the outdoor temperature is

lower than 0℃, the water in the water system should be drained.

2) Water pipe may be frozen when the chilled water flow switch and anti-freezing temperature senor become

ineffective at running, therefore, the water flow switch must be connected in accordance with the connection
diagram.

3) Frost crack may happen to water-side heat exchanger at maintenance when refrigerant is injected to the

unit or is discharged for repair. Pipe freezing is likely to happen any time when the pressure of refrigerant is
below 0.4Mpa. Therefore, the water in the heat exchanger must be kept flowing or be thoroughly discharged.

Maintenance

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

13

32

No.

Detail information.

1

Detection of current of the compressor A1 (Protection code P4).

2

Detection of current of the compressor B1 (Protection code P5).
Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is
detected to exceed protective value set (33A for constant speed compressor), it will be shut down and re-started after 3 min.

3

Power port for the current board.

4

T4: outdoor ambient temperature sensor (Fault code E7).
T3B: pipe temperature sensor of the condenser B (Fault code E6 and protection code P7).
T3A: pipe temperature sensor of the condenser A (Fault code E5 and protection code P6).

1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of the unit. Start
outdoor fan A only, start A and B gears, and control the unit through T4.

2) T3B and T3A: when the electric control of the scroll unit detects the temperature of the outdoor pipe T3A or T3B of the
system exceeds the protective temperature 65℃, the corresponding system will be shut down. And it will be re-started up,

after the temperature drops below the recovery temperature 60℃. Another system will be not affected.

3) T4, T3B and T3A: when the temperature sensor is detected to suffer open circuit or short circuit, fault alarm will occur.

● When the main unit suffer fault of temperature sensor: the main unit and subordinate units will be shut down.

● When the subordinate unit suffer fault of temperature sensor: the unit will be shut down, but other subordinate units will

16．Control System

16.1 PCB Outline and Description

SS series

16.1.1 35/65/130kW module PCB, outlook view

10 9 8 7 6 5 4 3 2 1

11
12

14

15

16

17

18

19

20

16.1.2 35/65/130kW module components description

33

31

30
29

28

104 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

105

not be affected.

5

Shell-tube low-temperature ant-freeze sensor (Fault code Eb). Adjustment range of constant speed capability: ON and OFF.
Adjustment range of constant speed capability: ON and OFF.

6

Unit outlet water temperature sensor (Fault code E4).
Under refrigeration mode and heating mode, conduct adjustment according to the magnitude of unit outlet water
temperature.
Adjustment range of constant speed capability: ON and OFF.

7

Inlet water temperature sensor (Fault code EF).

8

Total outlet water temperature sensor (Fault code E3).
Only the main unit is valid, and the subordinate units are invalid.
Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet water
temperature. Adjustment range: Load, stabilize, unload, Emergency Stop.

9

Remote mode control port(ON/OFF signal, effect on NO.0 unit).

1.Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode (the wired controller
is invalid).

2.First, the ON/OFF port is closed, second, if this port is closed, the unit enters the heating mode, else, the unit enters the
cooling mode.

10

Remote control port(ON/OFF signal, effect on NO.0 unit).

1) Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode (The wired controller
is invalid).

2) If the port is closed, the unit is turned on, else, the unit is turned off.

11

Electronic expansion valve of the system B.

12

Numerical code tube.

1) In case of stand-by, the address of the module is displayed.

2) In case of normal operation, 10 is displayed (10 is followed by dot).

3) In case of fault or protection, fault code or protection code is displayed.

13

Electronic expansion valve of the system A.
Electronic expansion valve is used to control refrigerant flow under different operating modes and different loads.

14

15

High-pressure protection in system A and discharge temperature switch protection (Protection code P0).
High-pressure protection in system B and discharge temperature switch protection (Protection code P2).
Low-pressure protection in system A (Protection code P1).
Low-pressure protection in system B (Protection code P3).
Constant speed compressor: connection of discharge temperature switch and high-pressure switch of the system in series.

16

Power phase detection(Fault code E8)

17

Water flow detection (Fault code of the main unit E9) is only valid for the main unit but invalid for subordinate units.

Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are
as shown in the following figure:

Normal display

Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenserA

T61 frost-proof temp Unit outlet water temp Unit outlet-water tempe Temp. of the condenser B

EXV openingA EXV opening B Operating current of system A Operating current of system B The last failure

● Display contents of “operating mode”: 1. cooling; 2. heating; 4. pump; 8. Stand-by.

● Display contents of “number of online units”: the main unit can display the number of online units, and the subordinate

unit displays 0.

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

1) Main unit: if abnormal water flow occurs for the first and second time, the main unit board will display fault code E9.

2) Subordinate unit: (Water flow detection will not be done).

18

COM (I) 485 communication port (Fault code E2).
COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication.

1) If faults occur between the wired controller and the main unit module, all modules will be shut down.

2) If faults occur between the main unit and subordinate units, the subordinate unit module suffering communication fault will
be shut down. Less units will be detected by the wired controller, which may display EC, and in the meanwhile, the indicator
lamp of the wired controller will flash.
Restart 3 minutes later after malfunction be removed.

19

COM (O) 485 communication port (Fault code E2).

20

Anti-freezing pressure protection in system A(Protection code Pc).
Anti-freezing pressure protection in system B(Protection code Pd).

21

The alarm signal output of the unit(ON/OFF signal).

22

Auxiliary electric heater:
Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220V control power supply, so
special attention should be paid when installing the auxiliary electric heater.
Attention!
Under heating mode, when the main unit board detects total water outlet temperature to be lower than 45℃, the switch will be

closed, and the auxiliary electric heater will begin to work; when the total water outlet temperature is higher than 50℃, the
switch will be opened, and the auxiliary electric heater will stop working.

23

PUMP.
Attention: the control port value of the pump actually detected is ON/OFF but not 220V control power supply, so special
attention should be paid when installing the pump.

1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the
process of operation.

2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating.

3) In case of shutdown under the pump mode, the pump can be directly shut down.

24

25

One compressor of the system B.
Four-way valve of the system B.
One compressor of the system A.
Four-way valve of the system A.

S2 ON: Cooling only OFF：R&C
S3 ON: Digital OFF：Fixed
S4 ON:H-EEprom OFF：Normal
S5 ON:C-EEprom OFF：Normal

106 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

107

26

27

PWM pressure released valve control(For digital compressor).

28

Outdoor fan A, controlled by T4.

29

Outdoor fan B, controlled by T4.

30

Input of transformer, 220V AC current. (Only valid for the main unit).

31

Input of three-phase four-wire power supply (Fault code E1).
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120º
among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be displayed.
When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power
supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in
operation.

32

33

Output of transformer

When the address is 0, it serves as the main
unit.

When the address is 1,2,3……F, it serves as
the subordinate unit 1,2,3……15.

0

1

F

E

D

C

B

A

9

F

E

D

C

2

3

4

5

6

7

8

8

0

1

2

3

4

B

A

9

8

8

ADDRRSS

Each scroll part of scroll unit has the same electric control function, and the main unit and subordinate units can be set
through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being
the main unit is given to the unit with digital compressor, and other addresses are subordinate units. Only the unit is chosen
as the main unit, its electric control can activate such functions as direct communication with the wired controller, refrigerating
and heating capability adjustment, pump control, auxiliary electric heater control, total effluent temperature detection and
water flow switch detection.

5

6

7

S7 ON: Remote control OFF：Wired control
S8 ON: Low temp. mode OFF：Normal
S9 ON: 30KW OFF：65/130/200/260KW

CAUTION

1. Faults

When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the slave unit suffers faults, only the unit stops operating, and other units are not affected.

2. Protection

When the main unit is under protection, only the unit stops operating, and other units keep running;
When the slave unit is under protection, only the unit stops operating, and other units are not affected.

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

No.

Detail information.

1

Detection of current of the compressor A1 (Protection code P4).

2

Detection of current of the compressor B1 (Protection code P5).
Current is not detected within the initial 5 seconds after the compressor is started up. When the current of the compressor is
detected to exceed protective value set (33A for constant speed compressor), it will be shut down and re-started after 3 min.

3

T4: outdoor ambient temperature sensor (Fault code E7).
T3B: pipe temperature sensor of the condenser B (Fault code E6 and protection code P7).
T3A: pipe temperature sensor of the condenser A (Fault code E5 and protection code P6).

1) T4: if there is one system that requires starting outdoor fans, the fans are started through electric control of the unit. Start
outdoor fan A only, start A and B gears, and control the unit through T4.

2) T3B and T3A: when the electric control of the scroll unit detects the temperature of the outdoor pipe T3A or T3B of the
system exceeds the protective temperature 65℃, the corresponding system will be shut down. And it will be re-started up,

after the temperature drops below the recovery temperature 60℃. Another system will be not affected.

3) T4, T3B and T3A: when the temperature sensor is detected to suffer open circuit or short circuit, fault alarm will occur.

● When the main unit suffer fault of temperature sensor: the main unit and subordinate units will be shut down.

● When the subordinate unit suffer fault of temperature sensor: the unit will be shut down, but other subordinate units will

not be affected.

4

Detection of current of the compressor A2 (Protection code P4)

5

Unit outlet water temperature sensor (Fault code E4).

16.1.3 80kW module PCB, outlook view

3 4226 51314 29303734 10 11

1

35

33

9

2

12

7

17

18

15

16

32 19 20 2131 23 2636 27

16.1.4 80kW module components description

8

28

24
25

38

108 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

109

Under refrigeration mode and heating mode, conduct adjustment according to the magnitude of unit outlet water
temperature.
Adjustment range of constant speed capability: ON and OFF.

6

Total outlet water temperature sensor (Fault code E3).
Only the main unit is valid, and the subordinate units are invalid.
Under refrigerating mode and heating mode, conduct adjustment according to the magnitude of total outlet water
temperature. Adjustment range: Load, stabilize, unload, Emergency Stop.

7

8

9

10

COM (O) 485 communication port (Fault code E2)

When the address is 0, it serves as the main
unit.

When the address is 1,2,3……F, it serves as

the subordinate unit 1,2,3……15.

Spot check. The operating status of outdoor system can be observed through spot check, and specific display contents are
as shown in the following figure:

Normal display

Operating mode Operating capability of the compressor B Number of online units Outdoor ambient temp. Temp. of the condenserA

T61 frost-proof temp Unit outlet water temp Unit outlet-water tempe Temp. of the condenser B

EXV openingA EXV opening B Operating current of system A Operating current of system B The last failure

● Display contents of “operating mode”: 1. cooling; 2. heating; 4. pump; 8. Stand-by.

● Display contents of “number of online units”: the main unit can display the number of online units, and the subordinate

unit displays 0.
Factory setting

0

1

F

E

D

C

B

A

9

F

E

D

C

B

A

9

ADDRRSS

Each scroll part of scroll unit has the same electric control function, and the main unit and subordinate units can be set
through address code on the electric control board. The address code 0 # is provided as the main unit. The priority of being
the main unit is given to the unit with digital compressor, and other addresses are subordinate units. Only the unit is chosen
as the main unit, its electric control can activate such functions as direct communication with the wired controller, refrigerating
and heating capability adjustment, pump control, auxiliary electric heater control, total effluent temperature detection and
water flow switch detection.

2

3

4

5

6

7

8

8

0

1

2

3

4

5

6

7

8

8

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

11

COM (I) 485 communication port (Fault code E2).
COM (O) is interconnected with P, Q and E of COM (I), used for RS-485 communication.

1) If faults occur between the wired controller and the main unit module, all modules will be shut down.

2) If faults occur between the main unit and subordinate units, the subordinate unit module suffering communication fault will
be shut down. Less units will be detected by the wired controller, which may display EC, and in the meanwhile, the indicator
lamp of the wired controller will flash.
Restart 3 minutes later after malfunction be removed.

12

High-pressure protection in system A and discharge temperature switch protection (Protection code P0).
High-pressure protection in system B and discharge temperature switch protection (Protection code P2).
Low-pressure protection in system A (Protection code P1).
Low-pressure protection in system B (Protection code P3).
Constant speed compressor: connection of discharge temperature switch and high-pressure switch of the system in series.

13

Inlet water temperature sensor (fault code EF)

14

Shell and tube low-temperature ant-freeze sensor (Fault code Eb).

15

Water flow detection (fault code of the main unit E9) is only valid for the main unit but invalid for subordinate units.

1) Main unit: if abnormal water flow occurs , the main unit board and the wired controller will display fault code E9.

2) Subordinate unit: (water flow detection will not be done).

16

Power phase detection(Fault code E8).

17

Electronic expansion valve of the system B.

18

Electronic expansion valve of the system A.
Electronic expansion valve is used to control refrigerant flow under different operating modes and different loads.

19

Auxiliary electric heater
Attention: the control port value of auxiliary electric heater actually detected is ON/OFF but not 220-230V control power
supply, so special attention should be paid when installing the auxiliary electric heater.
Attention!
Under heating mode, when the main unit board detects total water outlet temperature to be lower than 45℃, the switch will be

closed, and the auxiliary electric heater will begin to work; when the total water outlet temperature is higher than 50℃, the
switch will be opened, and the auxiliary electric heater will stop working.

20

PUMP.
Attention: the control port value of the pump actually detected is ON/OFF but not 220-230V control power supply, so special
attention should be paid when installing the pump.

1) After receiving start-up instruction, the pump will be started up instantly, and will maintain start-up state always in the
process of operation.

2) In case of refrigerating or heating shutdown, the pump will be shut down 2 minutes after all modules stop operating.

3) In case of shutdown under the pump mode, the pump can be directly shut down.

21

One compressor of system B(B1);
Neutral wire;
One compressor of system A(A1);
Neutral wire.

22

Numerical code tube.

1) In case of stand-by, the address of the module is displayed;

2) In case of normal operation, 10. is displayed (10 is followed by dot).

3) In case of fault or protection, fault code or protection code is displayed.

23

Four-way valve of the system B;
Neutral wire.

24

Outdoor fan A, controlled by T4.

25

Outdoor fan B, controlled by T4.

110 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

111

26

PWM pressure released valve control(for digital compressor)

27

Input of transformer, 220-230V AC current. (only valid for the main unit)

28

Input of three-phase four-wire power supply (Fault code E1)
Three phases A, B and C of power supply should exist simultaneously, and the difference of phase angle should be 120º
among them. If the conditions are not met, fault of phase sequence or phase lack may occur, and fault code will be displayed.
When the power supply returns to normal condition, fault is removed. Attention: phase lace and phase dislocation of power
supply are detected only in the early period after the power supply is connected, and they are not detected while the unit is in
operation.

29

Output of transformer

30

Power port for the current board

31

One compressor of the system B(B2); Neutral wire;
One compressor of the system A(A2) ; Neutral wire.

32

The alarm signal output of the unit(ON/OFF signal)

33

Anti-freezing pressure protection of the system A(Protection code Pc)
Anti-freezing pressure protection of the system B(Protection code Pd)

34

Remote control port(ON/OFF signal, effect on NO.0 unit)

1.Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode (the wired controller
is invalid).

2.If the port is closed, the unit is turned on, else, the unit is turned off.

35

Remote mode control port(ON/OFF signal, effect on NO.0 unit)

1.Dial the code S7 in the main control board to the “ON” position and enter to the remote control mode (the wired controller
is invalid).

2.First,the ON/OFF port is closed. Second, if this port is closed, the unit enters the heating mode, else ,the unit enters the
cooling mode.

36

Four-way valve of system A; Neutral wire.

37

Detection of current of compressor B2 (Protection code P5)

38

Plate heat exchanger heater/Pump heater port(DC 12V signal).

CAUTION

1. Faults

When the main unit suffers faults, the main unit stops operating, and all other units also stop running;
When the slave unit suffers faults, only the unit stops operating, and other units are not affected.

2. Protection

When the main unit is under protection, only the unit stops operating, and other units keep running;
When the slave unit is under protection, only the unit stops operating, and other units are not affected.

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

16.2 Wired Controller KJRM-120D/BMK-E(Standard)

KJRM-120D/BMK-E

1

2

3

4

16

11

15

14

1. Operation icon

2. Mode area

3. Setting temperature

4. Timing On/Off

5. Function icon

6. On-line unit qt y.

7. Reserved

8. Clock

9. Water temp.

13

10.ON/OFF key

11.Right, Left key

12.OK key

13. Setting key

14. Add, reduce key

15. Cancel key

16. Reserved key

16.2.1. Operating instructions of buttons

5

6

7

8

9

10

11

12

1 .Operation icon

○

: Indicate the ON and OFF status; when it is ON, it will display; when it is OFF, it

will disappear;

2 Mode area: Indicate the main unit operating mode;

○

3 Setting temperature: 2 status can be displayed:

○

4 Timing ON/OFF indication

○

5 Function icon;

○

: Indicate the timing information;

;

1) Computer: Display when connects to computer;

2) Maintenance: When the icon is lighted on it means should arrange professionals to do the cleaning

maintenance; long press“CONSTRAINT” for 3 seconds then this icon will be off, until the next

maintenance;

3) E-heating: Display when the electric auxiliary heating water function is operated;

4) Check: Display when check function is operated;

5) Anti-freezing: Display when the main unit ambient temperature is below 2℃, to remind the main unit
should be do the anti-freezing measurement;

6) Lock: When the icon is lighted on, it means the button has been locked (no keys operation for 2
minutes ), long press “OK” key for 3 seconds to unlock;

116 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

117

7) Error: When the main unit has error or protection, this icon will be displayed. The unit need to be
maintained by professionals.

6 On-line unit qty. indication: Under normal status display the quantity of the units connected to the wire

○

controller; under check status display the device serial number;

7 Reserved;

○

8 Clock: Under normal status display clock; during timing setting it displays the setting timing time;

○

9 Water temperature: Under normal status display water temperature; during water temperature setting it

○

displays the setting numerical value; under spot check status display spot check parameter;

10ON/OFF key: On and Off functions;

○

11 Right, Left key: Under main page to press this key can query the setting water temperature, setting

○

timing etc; during timing setting press the right key then shift to the next step setting; during spot check they
are used to turn over the unit parameter information;

12OK key: After setting the parameter then press this key to confirm. After keys locking then long press this

○

key for 3 seconds to unlock;

13Setting key: Setting the water temperature, timing, mode etc, long press this key for 3 seconds enter to

○

spot check;

14Add, Reduce key: Setting water temperature, timing, water level etc; during spot check they are used to

○

read over #0～#15 units;

15Cancel key: During setting parameters press this key to cancel setting. After timing setting and then long

○

press this key 3 seconds to cancel timing;

16Reserved key.

○

16.2.2. Operation instruction

On and Off the main unit

1) Press the On/Off key to control On and Off status of the main unit.

2) Under Off status, press the On/Off key “

controller will display the operation icon “ ”. The main unit will be operated as the current setting of the
wired controller.

3) Under On status, press the On/Off key “ ” to off the main unit, at that time the operation icon “ ” on the

LCD of wire controller will disappear.

” to operate the main unit, at that time the LCD of wired

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Turn on the unit

When intend to shut the unit

Power up to module unit and initially deliver
power to wire control.

Turn off the unit

Press “mode settings” key to set the

intended mode.

Press “OK” key to save the settings.
Unit will run after press “ON/OFF”

key 3 minutes later.

Press the key again until all

modes are showed (i.e. Cooling,

Heating and Pump modes.)

Press “ON/OFF” key

To select turn-off settings

Setting operating modes and parameters

Press “Setting” key to enter the operation mode and parameters setting. The setting contents will change

as the following order each time the key is pressed:

A

TER

W

TEM

P

.

TIMER

→ →

MODE

TEMP. DIFFERENCE

→

1) Setting water temperature: under main page directly press the “▲” or “▼” to adjust the water

temperature, or press “Setting” key to enter and then press “▲” or “▼” to adjust. At that time the

LCD will display “Setting temperature” and “Water temperature
parameter”, as the following display. Query water temperature setting:
press the “ ” or “▲” key under the main page to query the set
water temperature numerical value.

2) Timing setting: can set 3 timing periods on the wire controller:
Timer 1, Timer 2, Timer 3, and then control the main unit to ON and

OFF in different periods. Setting method: press “Setting” key under

main page twice to enter timing setting. At that time the LCD will display as the following:

TIMER

1

ON

118 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

119

This time the hour of the clock will flash, it means the current setting is the hour of Timer 1“On”, press the
“▲” or “▼” to adjust, press “▲” key when finished, and then the minute of the clock will flash, it means

the current setting is the minute of Timer 1“On”, press the “▲” or “▼” to adjust, press“▲”key when
finished, the LCD will display as the following:

TIMER

1

OFF

This time the hour of the clock will flash, it means the current setting is the hour of Timer 1 “Off”, press the
“▲” or “▼” to adjust, press “▲” key when finished, and then the minute of the clock will flash, it means
the current setting is the minute of Timing 1 “Off”, press the “▲” or “▼” to adjust, press “▲” key

when finished, the LCD will display as the following:

TIMER

ON

At this time the hour of the clock will flash, it means the current setting is the hour of the Timer 2 “On”, and
the follow setting method will be the same of the Timer 1. Similarly, the setting of Timing 3 is the same with
this method. After setting, press “OK” key or wait for 7 seconds then the setting to be effective, and the LCD
will display the effective timing information, as the following display:

TIMER

Example of Timing setting

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

▲

Main page

Press “Setting” key twice to enter hour setting

interface of “Timer 1 On”

Through the “▲” or “▼” key, set the hour

number of “Timing 1 On” to be 07

Press “ ” key to enter minute setting interface of

“Timer 1 On”, adjust the minute number to be 10

Press “ ” key to enter hour setting interface of
“Timer 1 Off”, adjust the hour number of “Timer 1

Off” to be 12

Press “ ” key to enter minute setting interface of
“Timer 1 Off”, adjust the minute number to be 30

Whether press “OK” key

Successfully set the On time of

“Timer 1” to be 07:10 and Off time

of “Timer 1 Off ” to be 12:30, then

back to the main page.

The setting steps of “Timer 2” and “Timer 3” are the same as “Timer 1”,

after setting all the settings then press “OK” key, and the3 timing periods

will be effective, and then back to the main page.

▼

▼

▼

Yes

No

Whether press “ ” key

Yes

Finish setting the On time of
“Timer 1” to be 07:10 and Off

time to be 12:30, then enter the

setting of “Timer 2”.

“Timer 1” setting

failed, after 7
seconds, the
page shift to

No

▼

During any period of timing setting to press “OK” key , then the timing period has been set will be effective
(only when the “On” and “Off” of one timing period have been set then this period setting can be finished).
Press “Cancel” then cancel the setting. Query timing information: if query the timing hour which has been set,

press “ ” or “

” key under main page, the On and Off time of Timer1, Timer 2 and Timer3 will be displayed

in turns.
Cancel timing: long press “Cancel” key for 3 seconds, then all the effective timing periods will be cancelled.

Note:

To avoid the timing error, each period of timing should not be crossed. E.g.:

Correct:

Wrong:

5：00

5：00

TIMER 1

8：00

7：00

8：00

TIMER 2

10：00 12：00

TIMER 2TIMER 1

12：00

18：00

TIMER 3

22：00

3) Set working mode (valid when wired controller set to 2,3,4)

Press “SET” key 3 times to enter the working mode setting when the main unit is off power. press the “▲”
or “▼” key to adjust , press “OK” key or wait for 7 seconds to be effective, and back to the main page;
During setting process to press “Cancel” key then will exit without saving. The controller will show
different working mode when it is applied to different main unit and set to 2,3,4 respectively.

120 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

121

Note:

Working mode setting is valid only when the unit is power off.

4) Set clock

▲This time the hour of the clock will flash, it means the
current setting is the hour of the clock, press the “▲” or
“▼” to adjust, press “▲” key when finished, and then

the minute of the clock will flash, it means the current
setting is the minute of the clock, press the “▲” or “▼”

to adjust, press “ OK ”key when finished or wait for 7
seconds to be effective; during the setting process press
the “Cancel” key, then it will exit without saving.

Note:

For getting the correct timing on and timing off hour, please correctly set the clock!

16.2.3. Combination of key functions

1) HYSTERESIS setting function

a. Through the hysteresis setting, the system can adjust the load effectively.
b. The adjusting logic of cooling mode: (the parameter of δ1,δ2,Tj1 and Tj2 are decided by the outdoor unit)

c. The adjusting logic of heating mode: (the parameter of δ1,δ2,Tj1 and Tj2 are decided by the outdoor unit)

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

▲

T

≤Ts-δ

2

<

Ts+1

T
Ts-1+δ

Ts-1+δ

T

≤T

≥Tj2

-

δ

≥

T

>

＜

Ts

Tj2

+1

-

δ

(TAL: total outlet water temperature)

2) ADDRESS setting function

The address of wire controller can be set by pressing this button. The address range 0~15, therefore, 16
wire controller could be parallel at most. Operation method: Press “Constraint” "▲" two button for 3

seconds to enter the wired remote address selection. Press “ ” or “▲” key to select the desired value. 7S
key operation or press “OK” key to exit and save the settings and return Page. Not saved during set up,

press the Cancel key parameters and exit.

Operation method: Turned off, press the "Constrain" "▲" 2 button
for 3 seconds to enter the hysteresis setting selection. Can be
adjusted Hysteresis parameter δ = (2,3,4,5 °C). Press “ ” or

“

” key to select the desired value, 7S key operation Or press the

Enter key, then exit and save the settings and return to the main
page. During setup, press the "Cancel" key, does not save the
parameters and exit.
The factory default δ = 2°C .

3) The fault is cleared
This feature can clear the fault and protection has been ruled out.

Methods of operation: press the "Constraint" " " two button for 3
seconds to clear the fault. Page of the main page and Inspection press
this key combination, you can clear the entire system fault, the fault code
cleared at the same time.

16.2.4. Check

1) Check function allows the user to query all the operating parameters and error and protection information

of the main unit.

2) Enter method: long press “Set” key for 3 seconds to enter check interface, as the figure display:

122 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

123

3) Press the “▲” or “▼” key to adjust the main unit serial number can query 16 sets main units status

information from #0～#15. Press “ ” or “▲” to adjust the spot check sequence number of one main unit
then can query all the status information of this unit. Spot check content according to the main unit model

wired controller:

1

outlet water temperatureTou->2、inlet water temperatureTin->

3

outdoor ambient temperaturesT4->4、outdoor pipe temperatureT3A->

5

outdoor pipe temperatureT3B->6、current of the compressor IA->

current of the compressorIb->8、anti-frozen temperatureT6->

7

electronic expansion valv openingFA->10、electronic expansion valv openingFb->

9

11

Last one error or protection->12、Last second error or protection->

13

Last third error or protection->1、outlet water temperatureTou„„

16.2.5. Error alarm handling

When the unit has error or protection, “ ” icon will be flashed. Long press “Setting” for 3 seconds to
enter spot check, and then press the “▲” or “▼” key to query the unit of 0-15#, if the error icon was on

during query, that means the corresponding outdoor unit has error or protection at that time, and then can
spot check the last 1, 2, 3 times error or protection of this outdoor unit. After clear the error or protection, the
error icon will disappear.

16.2.6. Installation procedure

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Use PQE connect with each other when several wired-controllers are parallel.
The wiring procedure and principles are shown in the figure:

16.2.7. Basic conditions of operating the wired controller：

1) Applicable range of supply voltage: Input voltage is 10V AC.

2) Operating environment temperature of wired controller: -10°C~+43°C.

3) Operating RH of wired controller: RH 40%~RH90%.

16.2.8. Main functions of the wire controller as follows:

1) Touch key operation;

2) LCD displays operation parameters;

3) Multiple timer;

4) Buzzer prompt tone and alarm functions;

5) Real-time clock function.

16.2.9. Control and protection function of unit

The unit has the following protection functions:

1) Current cut-off protection

2) Power supply phase sequence protection

3) Protection for over-low suction pressure

4) Protection for compressor overcurrent

5) Protection for compressor overload

6) Anti-freezing protection

7) Protection for over-high discharge pressure

8) Protection for outlet and inlet water temperature

The unit also has other control functions:

1) Plug and play system

2) RS-485/TS232 Standard serial communication port

124 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

125

Wired controller

Network control

software

MODBUS

gateway

KJR-120A/MBTE

√ √ ×

KJRM-120D/BMK-E

√ × √

Max. 16 units

(P Q E)

(X Y E)

Max. 16

Modbus
gateway

Modbus
gateway

(P Q E)

(X Y E)

Max. 16 units

Computer

MODBUS gateway

The Modbus gateway can be customized, the MODBUS protocol built in wired controller KJRM-120D/BMK-E, it
realizes intelligent network control by X Y E ports. It can connect max. 16 wired controllers, each wired
controller can control max.16 units.

Note：

The gateway will be used with wired controller together（The LONWORKS gateway can be use
independently without wired controller）, as below:

LONWORKS

gateway

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

(Heating)→ (Pump)

16.3 Wired controller KJR-120A/MBTE(Optional)

16.3.1 NAMES OF KEYS ON THE WIRED CONTROLLER AND THE KEYPAD OPERATION

DESCRIPTION

TEMP S ET

TIM ER SET

MODE

ALA RM CLEA R

QUER Y

CLOC K

TIM ER QUER Y

R

6 8

7

2

3

4

17

5

LOCK

LOCK

15

HYSTER ESIS

ADDRESS SE T

1

9

12

13

11

10

18

16

14

PAGED OWN

ON/ OFF

OK

CANCEL

PAGEUP

ADDR ESS / -

ADDR ESS /+

TIMER SWITCH

ADDRESS S ET

HYST ERE SIS

① ON/OFF button:

In the power off status, press this key and the startup indicator led comes on, and the wired controller enters
the startup status and keeps the current set information such as temperature value, timing. In the startup
status, press this button once, and the startup indicator led goes off and transmits the shutdown information.

② Operation mode button:

In the power off status, press this button to select the operation mode. This function is invalid at power on
status.

Modes shifted sequence as follows:

1). Mode of KJR-120A/MBTE air cooled scroll wired controller:

→ (Cooling)→

2). Cooling only air cooled scroll wired controller:

→ (Cooling)→ (Pump)

③ ALARM CLEAR button

Press the button, then can clear some errors which need to operate manually for recovery. These errors
represent there are problems while the unit is operating, but will not affect the system safety. If this type of
error came out frequently then it needs to check and maintain the unit.

④ QUERY button

126 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

127

Press the button, inquire state information of No. 0 to No. 15 outdoor units (the default is state information of
No.0 unit) and enter inquiry state. After entering inquiry state, inquire the information of the former unit or the

following unit through “ADDRESS/+” and “ADDRESS/-”. After a certain outdoor unit is selected, state
information of the outdoor unit can be inquired through “page up” and “page down”. There are two possible

inquiry sequences.

1).Error→protection →outlet water temperature Tou→inlet water temperature Tin→outdoor ambient

temperatures T4→outdoor pipe temperature T3A→outdoor pipe temperature T3b→current of the
compressor IA → current of the compressor Ib→anti-freezing temperature T6→electronic expansion valve

opening FA→electronic expansion valve opening Fb→Error......The wired controller only displays the last

fault information and the protection information, when query is conducted on fault and protection information.

2). outdoor pipe temperature T3A→protection→Error→outlet water temperature Tou→current of the

compressor Ib→current of the compressor IA →Setting temperature Ts→outdoor ambient temperatures T4

→outdoor pipe temperature T3b→outdoor pipe temperature T3A......The wired controller only displays the

last fault information and the protection and protection information.

⑤ CLOCK button

Press the “CLOCK” button once 【Press for the first time】, and enter to the week adjustment, 【Press
for the second time】, and enter to the hour adjustment,【Press for the third time】,and enter the minute

adjustment. The numerical valve of week, hour and minute can be adjusted by “ADDRESS/+” and
“ADDRESS/-”, after the adjustment then press the OK button for the setting confirmation.

⑥ TEMP SET button

Setup the total water outlet temperature in cooling and heating mode.
The numerical valve of temperature setting can be adjusted by “ADDRESS/+” and “ADDRESS/-”

⑦TIMER SET button

Press the button can enter the timer set adjustment. The numerical valve of the week, the start period, the
end period, the operation mode and the setting temperature can be adjusted by “ADDRESS/+” and
“ADDRESS/-”.

⑧ OK button

Once finished upon, press OK key, wired controller will delivery order to main unit.

⑨ CANCEL button

Press the button can return to the interface previous and not save the setting information when the timer
switch is ON.

If press the button for 3 seconds continuously, all the setting information of the timer will be cleared.

○10 ADDRESS/+ button

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Press this button at Check mode, when select the next scroll, the operation status of the next scroll will
display; if the current scroll is 15#, and the next one is 0#.

Press this button for add address at wire address setting mode. If the wired controller address is 15, press
this key will display the next address is 0.

Press this button for add temperature at wire temperature setting mode.
Press this button for add clock or time at wire clock or time setting mode.

11 ADDRESS/- button

○

Press this button at query mode, when select the previous scroll, the operation status of the previous scroll
will display; if the current scroll is 0#, and the previous one is 15#.

Press this button for minus address at wire address setting mode. If the wired controller address is 0, press
this key will display the next address is 15.

Press this button for minus temperature at wire temperature setting mode.
Press this button for minus clock or time at wire clock or time setting mode.

12 ○13 PAGEUP/DOWN button to spot check the operation parameters of unit in the main menu.

○

14 HYSTERESIS button (Hidden)

○

Use a small round bar with 1mm diameter to press this button, then can adjust the return parameter δ＝
(2,3,4,5℃). The numerical valve of hysteresis can be adjusted by “ADDRESS/+” and “ADDRESS/-”, after
the adjustment then press the OK button for the setting confirmation.

The factory defaults δ＝2℃.

15 LOCK button (Hidden)

○

Use a 1mm-diameter round bar to lock the current setting. Press this button again to unlock.

16 ADDRESS SET button (Hidden)

○

The address of wired controller can be set by pressing this button. The address range 0~15, therefore, 16
wired controller could be parallel at most.

When there is only one wired controller, it is necessary to execute this setting, the address of wired controller
should be set to '0'(main wired controller).

17 TIMER QUERY button

○

Press the button can inquire the timer setting information, such as the week, the setting operation mode, the
starting period, the end period and the setting temperature and so on.

18 TIMER SWITCH button

○

128 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

129

(the parameter of δ1,δ2,Tj1 and Tj2 are

decided by the outdoor unit)

Press the button can open the weekly timer function or close the weekly timer function.

16.3.2. OPERATION PROCEDURE OF WIRED CONTROLLER

● Operation procedure of mode setting

1. Press MODE at shutdown status, you could select appropriate mode as you want. The function is invalid

at startup status.

2. The mode which you can select depends on outdoor unit.

● Operation procedure of water temperature setting

1. Press [TEMP SET] button of wired controller when background light is on.

2. Press [ADDRESS/+] or [ADDRESS/- ] button, you can select the water temperature. Temperature range

is not same in different operation mode.

3. Temperature range depends on outdoor unit.

●Operation procedure of system ON/OFF

Press [ON/OFF] button, running indicator of wired controller is light, unit is start to run, and display running
status at wired controller. Press this button once again, unit will stop running.

●Operation procedure of system information querying

1. Press [QUERY] ,enter Check status.

2. Press [ADDRESS/+] or [ADDRESS/-] button, select the unit you want to query.

3.Press [PAGEUP] or [PAGEDOWN] button to query the unit information, which includes E-, P-, Tou, Tin,

T4,T3A, T3b ,IA, Ib, T6, FA, Fb or T3A, P-, E-,Tout, Ib, IA, Ts, T4, T3B.

●Operation of remote on/off

If the main unit’s is under the remote on/off control, Net-ON flashes, and communicate with upper unit is
invalid.

●Operation procedure of HYSTERESIS TEMP.SET(δ)

1.Through the hysteresis setting, the system can adjust the load effectively.

2.The adjusting logic of cooling mode :

(The parameter of δ1,δ2,Tj1 and Tj2 are decided by the outdoor unit)

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

(the parameter of δ1,δ2,Tj1 and Tj2 are

decided by the outdoor unit)

3: The adjusting logic of heating mode:
(the parameter of δ1,δ2,Tj1 and Tj2
are decided by the outdoor unit)

16.3.3 The adjusting logic of heating mode: (the parameter of δ1,δ2,Tj1 and Tj2 are decided by the

outdoor unit)

T

≤Ts-δ

<

T

Ts-1+δ

Ts-1+δ

≥Tj2

T

Ts+1

T

>

≤T

2

-

δ

≥

＜

Ts

Tj2

+1

-

δ

(TAL: total outlet water temperature)

● Fault alarm handling

1.When unit fails or the wired controller detects failure of communication with the outdoor units, the indicator

blinks. After all errors of the system and the wired controller are eliminated, the indicator stops blinking. The
fault indicator and the operation indicator share the same LCD.

2.Some errors will be auto cleared after the errors are cleared, and some error must press the “ALARM

CLEAR” button and then be cleared after the errors are cleared. The details can refer to the error code table.

If this type of error comes out frequently, then need to check and maintain the unit.

OVERVIEW OF WIRED CONTROLLER

Basic conditions of operating the wired controller:

1. Applicable range of supply voltage: Input voltage is AC 220V±10%, powered to wired controller by

attached power adapter.

2. Operating environment temperature of wired controller: -15℃~+43℃.

3. Operating RH of wired controller: RH40%~RH90%.

16.3.4 OUTLINE OF FUNCTIONS

This wired controller provides the following functions:

1. Connect with the outdoor unit through the terminals P, Q and E. Connect with the upper unit through the

terminals X, Y and E(reserved).Connect with other wired controllers through the terminals P, Q and E.

2. Set the action mode through the keypad operation.

3. Provide the LCD display function.

4. Provide the timing startup function.

5. Real-time clock function (the wired controller inner place 3V battery)

When the wired controller is powered on, the LCD will display the current time; if it is powered off, the clock
will not be displayed, then it will be auto updated when the wired controller is re-power on.

130 Control system

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

131

16.3.5 NAME AND FUNCTION DESCRIPTION OF LCD SCREEN OF WIRED CONTROLLER

Display operation mode

Display time data

16.3.6 INSTALLATION PROCEDURE

Installation procedure:

Outdoor unit

#00

Outdoor unit

#01

Outdoor unit

#02

Display operation status

Display query data

Outdoor unit

#15

Wired Controller

#00

Use PQE connect with the outdoor units.

NOTE:

Please connect the attached shorted-wires to the corresponding communication port COM(I) or COM(O) in
the main control board of the last parallel unit (dial code ). Directly connect to the last parallel unit if only one
unit is connected.

The wiring procedure and principles are shown in the figure:

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Outdoor electric

control box

w

k

y

c

lo

a

l

a

l

r

e

B

G

Y

Please use 3-cord with shielding
wire for connection. The wire
length depends on the specific
situation in the installation.

Communicate with

upper unit(reserved).

If it is under the host computer
network control, displays,
otherwise there is no display.

E

Y

X

Q

P

wired controller

16.3.7 USING METHOD
CLOCK SETTING

CLOCK

or

or

ADDRESS/-

ADDRESS/-

set week

set hour

ADDRESS/+

OK

ADDRESS/+

OK

5-bit terminal base

ADDRESS/+

OK

132 Control system

or

ADDRESS/-

set done

set minute

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

133

e

e

WEEKLY TIMER SETTING

TIMER SET

ADDRESS/+

Y

ADDRESS/+

Y

ADDRESS/+

Y

ADDRESS/+

Y

ADDRESS/+

Y

ADDRESS/+

Y

ADDRESS/+

Y

Set Timer Period 2

or

OK

or

OK

or

OK

or

OK

or

OK

or

OK

or

OK

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

Select week

Set Period 1 start hour

Set Period 1 start minute

Set Period 1 end hour

Set Period 1 end minute

Set Period 1 mode

Set Period 1 temperatur

Set Timer Period 2

ADDRESS/+

OK

Y

ADDRESS/+

OK

Y

ADDRESS/+

OK

Y

ADDRESS/+

OK

Y

ADDRESS/+

OK

Y

ADDRESS/+

OK

Y

ADDRESS/+

OK

or

or

or

or

or

or

or

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

ADDRESS/-

Set Period 2 start hour

Set Period 2 start minute

Set Period 2 end hour

Set Period 2 end minute

Set Period 2 mode

Set Period 2 temperatur

Select week

NOTE:

In operating, press the key "CANCEL", to turn back to the previous step or the normal display interface.

WEEKLY TIMER QUERY

TIMER QUERY

or

or

ADDRESS/-

ADDRESS/-

Select query week

Select queryPeriod1

ADDRESS/+

OK

Y

ADDRESS/+

orPeriod 2

OK

Y

ADDRESS/+

OK

or

ADDRESS/-

Y

Tonormaldisplay

Select query start
time or end time

Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

NOTE:

In operating, press the key "CANCEL", to turn back to the previous step or the normal display interface.

1.Before power failure of the heating water system or wired controller, the wired controller memorizes the
status of the unit automatically, and sets the water temperature value except timing on/off function. After
being powered on, the wired controller will send the relevant signals to the heating water system according
to memorized status before power failure, in order to ensure that the unit can run in the originally set status
after restoration of the power supply.

2. In the normal status, the background light is off. Press any key can only turn on the background light .

3. In order to protect the equipment, it is not allowed to change the running mode quickly or frequently. It
should operate the wired controller to start up the unit after 3 minutes later or all units are shutdown.

4. The wired controller and the outdoor unit must connect with the same power supply, powered up and
powered off simultaneously. It is not allowed to cut off the power supply separately.

5. When several wired controllers are parallel connected, the timing message can’t communicating in these
wired controllers, and the timing will work separately. In order not to confuse, we suggest set the timing
message on one wired controller for the reason of indoor unit performance is compliance with the sequence
of setting time.

6.During changing or installing the battery, pay attention to the “+”,“-” poles of the battery and install it
correctly, or will damage the control panel or battery, even worse will put lives at risk.

134 Control system

Aqua Tempo Super Series air cooled scroll chiller unit (50Hz) MCAC-ATSM-2014-05

Temp.

Ratio

Temp.

Ratio

Temp.

Ratio

Temp.

Ratio

-20

115.266

20

12.6431

60

2.35774

100

0.62973

-19

108.146

21

12.0561

61

2.27249

101

0.61148

-18

101.517

22

11.5

62

2.19073

102

0.59386

-17

96.3423

23

10.9731

63

2.11241

103

0.57683

-16

89.5865

24

10.4736

64

2.03732

104

0.56038

-15

84.219

25

10

65

1.96532

105

0.54448

-14

79.311

26

9.55074

66

1.89627

106

0.52912

-13

74.536

27

9.12445

67

1.83003

107

0.51426

-12

70.1698

28

8.71983

68

1.76647

108

0.49989

-11

66.0898

29

8.33566

69

1.70547

109

0.486

-10

62.2756

30

7.97078

70

1.64691

110

0.47256

-9

58.7079

31

1.59068

111

0.45957

-8

56.3694

32

1.53668

112

0.44699

-7

52.2438

33

1.48481

113

0.43482

-6

49.3161

34

1.43498

114

0.42304

-5

46.5725

35

1.38703

115

0.41164

-4

44

36

1.34105

116

0.4006

-3

41.5878

37

1.29078

117

0.38991

-2

39.8239

38

1.25423

118

0.37956

-1

37.1988

39

1.2133

119

0.36954

0

35.2024

40

1.17393

120

0.35982

1

33.3269

41

1.13604

121

0.35042

2

31.5635

42

4.76253

82

1.09958

122

0.3413

3

29.9058

43

4.5705

83

1.06448

123

0.33246

4

28.3459

44

4.38736

84

1.03069

124

0.3239

5

26.8778

45

4.21263

85

0.99815

125

0.31559

6

25.4954

46

4.04589

86

0.96681

126

0.30754

7

24.1932

47

3.88673

87

0.93662

127

0.29974

8

22.5662

48

3.73476

88

0.90753

128

0.29216

9

21.8094

49

3.58962

89

0.8795

129

0.28482

10

20.7184

50

3.45097

90

0.85248

130

0.2777

11

19.6891

51

3.31847

91

0.82643

131

0.27078

12

18.7177

52

3.19183

92

0.80132

132

0.26408

13

17.8005

53

3.07075

93

0.77709

133

0.25757

14

16.9341

54

2.95896

94

0.75373

134

0.25125

15

16.1156

55

2.84421

95

0.73119

135

0.24512

16

15.3418

56

2.73823

96

0.70944

136

0.23916

17

14.6181

57

2.63682

97

0.68844

137

0.23338

18

13.918

58

2.53973

98

0.66818

138

0.22776

19

13.2631

59

2.44677

99

0.64862

139

0.22231

2.Temperature-Resistance characteristic sheet for pipe temperature sensor，ambient temperature
sensor，inlet water temperature sensor and outlet water temperature sensor.

Sensor characteristic sheet Unit：Temp:℃--K, Ratio:KΩ

7.62411 71

7.29464 72

6.98142 73

6.68355 74

6.40021 75

6.13059 76

5.87359 77

5.62961 78

5.39689 79

5.17519 80

4.96392 81

164 Appendix

MCAC-ATSM-2014-05 Aqua Tempo Super Series air cooled scroll chiller unit (50Hz)

165

Tem.

Ratio

Tem.

Ratio

Temp.

Ratio

Temp.

Ratio

Temp.

Ratio

-40

2889.60000

13

148.39300

66

17.29460

119

3.45032

172

0.97524

-39

2704.61400

14

141.59040

67

16.70980

120

3.35400

173

0.95632

-38

2532.87200

15

135.14040

68

16.13360

121

3.26198

174

0.93826

-37

2373.34200

16

129.00000

69

15.59180

122

3.17340

175

0.92020

-36

2225.07800

17

123.17780

70

15.06720

123

3.08740

176

0.90214

-35

2087.22000

18

117.65660

71

14.55980

124

3.00484

177

0.88494

-34

1957.44600

19

112.41060

72

14.07820

125

2.92400

178

0.86774

-33

1836.70200

20

107.43980

73

13.60520

126

2.85090

179

0.85054

-32

1724.38600

21

102.70120

74

13.15800

127

2.78038

180

0.83420

-31

1619.72400

22

98.19480

75

12.72800

128

2.71158

181

0.81614

-30

1522.20000

23

93.92060

76

12.30660

129

2.64450

182

0.79808

-29

1430.54120

24

89.86140

77

11.91100

130

2.58000

183

0.78088

-28

1345.07440

25

86.00000

78

11.52400

131

2.51636

184

0.76454

-27

1265.35240

26

82.31060

79

11.15420

132

2.45444

185

0.74820

-26

1190.94520

27

133

2.39424

186

0.73358

-25

1121.45720

28

134

2.33576

187

0.71982

-24

1056.14020

29

135

2.27900

188

0.70606

-23

995.10600

30

136

2.22396

189

0.69230

-22

938.04500

31

137

2.17150

190

0.67940

-21

884.66480

32

138

2.11990

-20

834.71600

33

139

2.07002

-19

787.65680

34

140

2.02100

-18

743.58180

35

141

1.97370

-17

702.29320

36

142

1.92812

-16

663.59320

37

143

1.88340

-15

627.28400

38

144

1.83954

-14

593.03020

39

145

1.79740

-13

560.88340

40

45.81220

93

7.18530

146

1.75354

-12

530.71460

41

44.00620

94

6.97288

147

1.71140

-11

502.36900

42

42.29480

95

6.76820

148

1.67012

-10

475.74340

43

40.65220

96

6.57126

149

1.62970

-9

450.57120

44

39.07840

97

6.38120

150

1.59100

-8

426.90400

45

37.58200

98

6.19716

151

1.54886

-7

404.64720

46

36.14580

99

6.02000

152

1.50844

-6

383.70620

47

34.76120

100

5.84800

153

1.46888

-5

363.98640

48

33.44540

101

5.68632

154

1.43018

-4

345.31580

49

32.18980

102

5.52980

155

1.39320

-3

327.73740

50

30.98580

103

5.37930

156

1.36224

-2

311.16520

51

29.83340

104

5.23310

157

1.33214

-1

295.55620

52

28.72400

105

5.09120

158

1.30290 0 280.82440

53

27.66620

106

4.95360

159

1.27452

1

266.85800

54

26.65140

107

4.82030

160

1.24700

2

253.68280

55

25.67960

108

4.69216

161

1.21948 3 241.24720

56

24.75080

109

4.56660

162

1.19368 4 229.49960

57

23.85640

110

4.44620

163

1.16788

5

218.40560

58

23.00500

111

4.32322

164

1.14208

6

207.87060

59

22.17940

112

4.20454

165

1.11800

7

197.91180

60

21.39680

113

4.08930

166

1.09650 8 188.49480

61

20.64000

114

3.97750

167

1.07500

9

179.59380

62

19.90900

115

3.87000

168

1.05436

10

171.16580

63

19.22100

116

3.75992

169

1.03458

11

163.15920

64

18.55020

117

3.65328

170

1.01480

12

155.57400

65

17.91380

118

3.55008

171

0.99502

3.Temperature-Resistance characteristic sheet for discharge temperature sensor of digital
compressor.

Sensor characteristic sheet Unit：temp:℃--K, Ratio:KΩ

78.81040 80 10.79300

75.47360 81 10.44900

72.30020 82 10.12220

69.28160 83 9.80400

66.39200 84 9.49440

63.64860 85 9.20200

61.02560 86 8.91820

58.53160 87 8.64300

56.15800 88 8.37640

53.88760 89 8.11840

51.72040 90 7.86900

49.65640 91 7.64110

47.69560 92 7.40460

Appendix