Service Manual

Service Manual

2010

MLCAC-UTSM-2010-10 Contents

Part 1 General Information ................................................................................................. 1

Part 2 Indoor Units .............................................................................................................. 7

Part 3 Outdoor Units ......................................................................................................... 86

Part 4 Installation ............................................................................................................ 124

Part 5 Control................................................................................................................... 135

※The specifications, designs, and information in this book are subject to change without notice for

product improvement.

Contents i

MLCAC-UTSM-2010-10 General Information

Part 1

General Information

1. Model Names of Indoor/Outdoor Units .......................... 2

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

2.1 Indoor Units ................................................................................. 3

2.2 Outdoor Units .............................................................................. 4

3. Nomenclature ................................................................... 5

4. Features ............................................................................ 6

General Information 1

Model Names of Indoor/Outdoor Units

1. Model Names of Indoor/Outdoor Units

1.1 Indoor Units

R410A (capacity multiplied by 1000Btu/h)

Type

New Four-way cassette

Four-way cassette

Duct

Ceiling & floor

Console

Function

Cooling and heating

Cooling and heating

Cooling and heating

Cooling and heating

Cooling and heating

12

√

√

√

√

1.2 Outdoor Units

Model of outdoor unit and corresponding indoor unit

Universal Outdoor unit Model Compressor type Compressor Brand

18

√

√

√

√

√

KOU-12HDN1 Rotary DC Inverter GMCC

KOUA-18HDN1-C0

KOUB-24HDN1

KOU-30HDN1

KOU-36HDN1

KOUB-36HDN1-R

KOU-48HDN1

KOUB-48HDN1-R

KOUA-60HRDN1

KOUD-60HDN1-R

Scroll DC Inverter Shenyang SANYO

Rotary DC Inverter HITACHI

Rotary DC Inverter MITSUBISHI





Scroll DC Inverter MITSUBISHI

Scroll DC Inverter MITSUBISHI

MLCAC-UTSM-2010-10

24

√

√

√

30

√

√

√

36

√

√

√

48

√

√

√

60

√

√

√

Matched indoor units

KCA2-12HRDN1-Q

KTB-12HWDN1

KUB-12HRDN1

KFA-12HRDN1

KCA2-18HRDN1-Q

KTB-18HWDN1

KUB-18HRDN1

KCC-18HRDN1

KFA-18HRDN1

KTB-24HWDN1

KUB-24HRDN1

KCC-24HRDN1

KTB-30HWDN1

KUB-30HRDN1

KCC-30HRDN1

KTB-36HWDN1

KUB-36HRDN1

KCC-36HRDN1

KTB-48HWDN1

KUB-48HRDN1

KCC-48HRDN1

KTB-60HWDN1

KUB-60HRDN1

KCC-60HRDN1

General Information

MLCAC-UTSM-2010-10

2. External Appearance

2.1 Indoor Units

Duct

Four-way Cassette

External Appearance

Ceiling & Floor

New Compact Four-way cassette

Console

General Information 3

External Appearance

2.2 Outdoor Units

KOU-12HDN1

KOUB-24HDN1

MLCAC-UTSM-2010-10

KOUA-18HDN1-C0

KOU-30HDN1, KOUB-36HDN1-R

KOU-36HDN1, KOU-48HDN1, KOUB-48HDN1-R

KOUA-60HRDN1, KOUD-60HDN1-R

General Information

MLCAC-UTSM-2010-10

3. Nomenclature

3.1 Indoor Unit

M U B - 18 H R D N1

Refrigerant Type

N1 R410A

DC Inverter

Control Mode

R Remote Control

Function Code

C cooling Only

H cooling & Heating

Product Series

A First Time Design B Second Time Design

C Third Time Design

Product Category

C Cassette Type

T Duct Type

F Console Type

U Ceiling & Floor Type

H High Static Pressure Duct Type

3.2 Outdoor Unit

M O U D - 60 H D N1- R

Midea

Power Supply

R 380~415V, 3N, 50Hz

-- 220~240V, 1N, 50Hz

Refrigerant

N1 R410A

DC Inverter

Function Code

C cooling only H cooling & heating

Product Series

A Time A Designed B Time B Designed

C Time C Designed D Time D Designed

Universal Outdoor Unit

O Outdoor unit U Universal

Midea

General Information

Nomenclature

5

Features MLCAC-UTSM-2010-10

4. Features

4.1 Universal outdoor unit design

Indoor unit with the same capacity can match with the same outdoor unit.

4.2 High efficiency and energy saving.

Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole series can easily reach A-class.

4.3 Low noise and low starting current.

Thanks to the DC inverter technology, the system can work with low noise, and very small starting current.

4.4 Intelligent refrigerant adjustment technology.

Throttle part is made up of capillary and electronic expansion valve (EXV). The outdoor unit can output the most accurate capacity in any condition.

4.5 Working in cooling mode under -15℃.

Outdoor unit built-in with low ambient kit, it can control the outdoor unit’s fan and cooling can be performed throughout the year for computer rooms, banquet halls, etc. Wide operation range covers outdoor temperatures as low as -15℃ for cooling.

4.6 Indoor & outdoor unit’s power supply is separate.

4.7 All indoor units have network control function.

4.8 All indoor units have Auto-restart function.

General Information

MLCAC-UTSM-2010-10 Indoor Units

Part 2

Indoor Units

New Four-way Cassette Type (Compact) ........................... 8

Four-way Cassette Type .................................................... 18

Duct Type ............................................................................ 35

Ceiling & Floor Type .......................................................... 53

Console Type ..................................................................... 72

Indoor Units 7

MLCAC-UTSM-2010-10 New Four-way Cassette Type (Compact)

New Four-way Cassette Type (Compact)

1. Features ............................................................................ 9

2. Specifications ................................................................ 10

3. Dimensions .................................................................... 11

4. Service Space ................................................................. 11

5. Wiring Diagrams ............................................................ 12

6. Air Velocity and Temperature Distributions ................. 13

7. Electric Characteristics ................................................. 14

8. Sound Levels ................................................................. 14

9. Accessories .................................................................... 15

10. The Specification of Power ......................................... 15

11. Field Wiring .................................................................. 16

New Four-way Cassette Type (Compact)

MLCAC-UTSM-2010-10

1. Features

(1) Low operation noise

---Streamline plate ensures quietness

---Creates natural and comfortable environment

(2) Efficient cooling

---Equal, fast and wide—range cooling

(3) The adoption of the most advanced 3- Dimensional Screw fan

---Reduces the air resistance passing through

---Smoothes the air flow

---Makes air speed distribution to the heat exchange uniform

Features

(4) Improvement for easy installation and maintenance

---Little space is required for installation into a shallow ceiling

---Because of the compactness and weight reduction of the main unit and panel, all models can be installed without a hoist

(5) 360

360

0

0

Air Flow Panel air outlet makes equal,fast ad wide range cooling

(6) Inside E-box design

The E-box is simply and safely build inside tge indoor unit, of witch ceiling side is 600mm*600mm. It is convenient to install and maintain. Checking the control part is easy, you only need to open the air return grille.

New Four-way Cassette (Compact) 9

Specifications MLCAC-UTSM-2010-10

2. Specifications

Model

Code

Power supply

Cooling

Heating

Indoor fan motor

Capacity

Input

Current

EER

Capacity

Input

Current

COP

Model

Qty

Input

V-ph-Hz

Btu/h

W

A

Btu/h

W

A

W

KCA2-12HRDN1-Q

220042300070

220~240-1-50

13680-12000-4800

1250-980-310

5.0

3.26

15340-13000-4550

1390-1090-370

5.8

3.63

YDK15-6P

1

47.1/31.1/26.9

KCA2-18HRDN1-Q

220042400150

220~240-1-50

19260-18000-6120

2070-1630-550

8.2

3.25

20800-20000-4800

2020-1600-560

8.2

3.62

YDK37-4P

1

80/46/32

Indoor coil

Capacitor

Speed(Hi/Mi/Lo)

Number of rows uF r/min

Tube pitch(a)×row pitch(b) mm

Fin spacing

Fin type (code) mm

Tube outside dia. and type mm

Coil length × height × width mm

Number of circuits

Indoor air flow (Hi/Mi/Lo) m

3

/h

Indoor noise level (sound pressure) dB(A)

Dimension (W×H×D)(body) mm

1.5 /450V

780/540/430

1

2 /400-450V

1000/710/570

2

21×13.37

1.3

21×13.37

1.3

Hydrophilic aluminum Hydrophilic aluminum

φ7Inner grooved copper tube φ7Inner grooved copper tube

1380×210×13.37 1370×210×26.74

2 4

683/530/510

42/41/38

570×260×570

800/710/560

42/41/38

570×260×570

Indoor unit

Packing (W×H×D)(body) mm

Dimension (W×H×D)(panel) mm

Packing (W×H×D)(panel) mm

655×290×655

647×50×647

705×113×705

655×290×655

647×50×647

705×113×705

Net/Gross weight(body) kg

Net/Gross weight(panel) kg

16/19

3/5

18/21

3/5

Refrigerant type R410A R410A

Design pressure

Refrigerant piping Liquid side/ Gas side

Drainage water pipe diameter

MPa mm mm

4.2/1.5

φ6.4/φ12.7

ODφ25

4.2/1.5

φ6.4/φ12.7

ODφ25

Controller R05/BGE (standard) R05/BGE (standard)

Operation temperature

℃

17-30 17-30

Notes: 1. Nominal cooling capacities are based on the following conditions:

Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. Piping: 7.5m(horizontal)

2. Nominal heating capacities are based on the following conditions:

Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. Piping: 7.5m(horizontal)

3. Actual noise level may differ, depending on the room structure, etc, since these noise values are from an anechoic room.

10 New Four-way Cassette (Compact)

MLCAC-UTSM-2010-10

3. Dimensions

Dimensions

4. Service Space


Wiring Diagrams

5. Wiring Diagrams

KCA2-12HRDN1-Q

MLCAC-UTSM-2010-10

KCA2-18HRDN1-Q


MLCAC-UTSM-2010-10

6. Air Velocity and Temperature Distributions

Air Velocity and Temperature Distributions

Airflow velocity

Temperature


Electric Characteristics

7. Electric Characteristics

Model

KCA2-12HRDN1-Q

Remark:

MFA: Max. Fuse Amps. (A)

8. Sound Levels

KCA2-18HRDN1-Q

FOUR-WAY CASSETTE TYPE

Hz

Indoor Units

MFA Min. Max.

Power

Supply

MFA

50 220-240V 198V 254V 20

50 220-240V 198V 254V 15

MLCAC-UTSM-2010-10

H

42

42

1.0m

Microphone

Noise level dB(A)

M

41

41

L

38

38

Model

KCA2-12HRDN1-Q

KCA2-18HRDN1-Q


MLCAC-UTSM-2010-10

9. Accessories

Name

1. Drain joint (Be provided in outdoor unit.)

2. Remote controller

3. Remote controller holder

4. Mounting screw(ST2.9×10-C-H)

5. Alkaline dry batteries (AM4)

6. Owner's manual

7. Installation manual

10. The Specification of Power

Shape Quantity

1

1

1

2

2

1

1

Accessories


Field Wiring

11. Field Wiring

KCA2

-12HRDN1-Q

MLCAC-UTSM-2010-10

KCA2-18HRDN1-Q


MLCAC-UTSM-2010-10

KCA2-12HRDN1-Q

KCA2-18HRDN1-Q

Field Wiring


Four-way Cassette Type MLCAC-UTSM-2010-10

Four-way Cassette Type

1. Features .......................................................................... 19

2. Specifications ................................................................ 22

3. Dimensions .................................................................... 25

4. Service Space ................................................................. 26

5. Wiring Diagrams ............................................................ 27



8. Sound Levels ................................................................. 29

9. Accessories .................................................................... 30


11. Field Wiring .................................................................. 33

18 Four-way Cassette Type

MLCAC-UTSM-2010-10

1. Features

(1) Low operation noise

—Streamline plate ensures quietness

—Creates natural and comfortable environment

(2) Efficient cooling——Equal, fast and wide range cooling

Features

(3) Excellent performance. The optimal evaporator & sufficient airflow volume guarantees the excellent capacity

(4) The adoption of the most advanced 3- Dimensional Screw fan

—Reduces the air resistance passing through

—Smoothes the air flow

—Makes air speed distribution to the heat exchange uniform

(5) Fresh air makes life healthier and more comfortable.

(6) Drainage pump can take up the condenser water to750mm.

(7) Ultra thin machine body to easy installation and maintenance. 18K~24K:230mm, 36~48K:300mm.

Four-way Cassette Type 19

Features

(8) Different color panels for choose: White、Gray、Blue、Black

MLCAC-UTSM-2010-10

(9) Swing angle of louver

1) Add one more swing motor, one motor driving two louvers. Controlling the interspace of each part, minimizing the angle loss.

2) The swing angle of the first louver are 40~42 degrees and the second louver are 37~38 degrees.

New evaporator and inner configuration designed can acquire high heat-exchanger effect.

(10) More strengthening rib design around the panel, preventing the distortion for the panel.

(11) New outlet frame design to make the phenomena of coagulation great improvement: prevent the condensing water from damaging the air guide strip.

(12) Adding rib on the panel of fan outlet, which can avoid the air outlet direct flow to people.

(13) 4 speeds available, optional super high fan speed design suitable for the large building over 3m high.

(14) Adding digital tube displaying on the display board. LED can display the Error Code to make the malfunction checking easier.


MLCAC-UTSM-2010-10 Features

(15) Reserve spaces for air side-outlet, it is available to connect duct pipe hence air supplying from the four sides to nearby small room..

(16) The connecting pipe and drop height is higher. Max. pipe length up to 50m（refer to ①）, and Max. drop height up to 30m（refer to ②）.

(17) Optimal design, smaller Control Box, Space saving and convenient for wiring,

Using fire resistance galvanized steel for E-box material. Metal box make the control part more stable and prevent damaging.

(18) 360°air flow panel : 360°air flow delivery ensures uniform airflow distribution. 60K is standard, the others are optional.




Indoor Unit

Outdoor Unit

Cooling

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input current

EER

Capacity

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

KCC-18HRDN1

220042400370

220~240-1-50

KOUA-18HDN1-C0

220075200340

220~240-1-50

19278-17981-5425

1.51-1.47-0.56

6.9-6.6-2.43

3.25

20934-19994-4947

KCC-24HRDN1

220042500500

220~240-1-50

KOUB-24HDN1

220075301070

220~240-1-50

26784-23993-5425

2.8-2.18-0.98

13.2-9.78-4.26

3.32

29002-26494-5800

KCC-30HRDN1

220042600010

220~240-1-50

KOU-30HDN1

220075401041

220~240-1-50

35826-29998-8189

4.5-2.71-1.1

20.5-11.78-4.78

3.24

40944-34000-9383 Btu/h

Heating

Input current

COP

KW

A

1.50-1.43-0.72

6.8-6.5-3.13

3.68

2.60-2.10-1.05

12.23-9.13-4.56

3.69

3.37-2.74-1.3

16.8-11.9-5.65

3.64

Model

YDK60-6F YDK80-6E YDK90-6E

Qty

Indoor fan motor

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

1

85/75/70

3uF/450V

550/480/410

1

120/100/90

3.5uF/450V

670/550/400

1

143/116/100

3.5uF/450V

770/640/550

Number of rows


2

21 x13.37

2

21 x13.37

2

21 x13.37

Indoor coil

Fin spacing

Fin type (code)

Tube outside dia. and type

Coil length × height × width mm mm mm

1.5

Hydrophilic aluminum

Ф7 Inner grooved copper tube

1990x168x26.74

1.5



1990x168x26.74

1.5



1990x252x26.74

Number of circuits

Indoor air flow(Hi/Med/Lo) m

3

/h

8

940/790/655

8

1327/1114/871

12

1545/1354/1187

Indoor noise level (Hi/Med/Lo)

Dimension

(W×H×D)(body)

Packing

Indoor unit

(W×H×D)(body)

Dimension

(W×H×D)(panel)

Packing

(W×H×D)(panel) dB(A) mm mm mm mm



40/39/37

840x230x840

900x250x900

950x55x950

1035x90x1035

24/30

6/9

42/41/39

840x230x840

900x250x900

950x55x950

1035x90x1035

25.5/28.5

6/9

44/42/41

840×300×840

900×320×900

950x55x950

1035x90x1035

30/36

6/9

Refrigerant type

R410A R410A R410A

Design pressure


MPa mm

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9

Drainage water pipe diameter mm

ODφ32 ODφ32 ODφ32

Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30


Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. piping: 7.5m (horizontal)


Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB; Equivalent ref. piping: 7.5m (horizontal)



MLCAC-UTSM-2010-10 Specifications

Indoor Unit

Outdoor Unit

Cooling

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input current

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

KCC-36HRDN1

220042700390

220~240-1-50

KOU-36HDN1

220075500651

220~240-1-50

42309-35826-9895

5.0-3.25-2.3

22.8-14.13-10

KCC-36HRDN1

220042700390

220~240-1-50

KOUB-36HDN1-R

220075500920

380-415-3-50

42309-35826-9895

5.0-3.25-2.3

7.7-6.0-4.1

Heating

EER

Capacity

Input current

COP

Btu/h

KW

A

3.23

45038-37617-12624

3.94-3.03-2.0

17.9-13.17-8.69

3.63

3.23

45038-37617-12624

3.94-3.03-2.0

6.5-4.8-3.2

3.63

Model

Qty

YDK90-6E

1

YDK90-6E

1

Indoor fan motor

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

143/116/100

3.5uF/450V

770/640/550

143/116/100

3.5uF/450V

770/640/550

Number of rows

2 2


21x13.37 21x13.37

Fin spacing

Fin type (code) mm

1.5


1.5


Indoor coil


Ф7 Inner grooved copper tube Ф7 Inner grooved copper tube mm


1990x252x26.74 1990x252x26.74

Number of circuits


3

/h

12

1545/1354/1187

12

1545/1354/1187


Dimension (W×H×D)(body) dB(A) mm

44/42/41

840×300×840

44/42/41

840×300×840

Indoor unit

Packing (W×H×D)(body)

Dimension

(W×H×D)(panel)

Packing (W×H×D)(panel) mm mm

900×320×900

950x55x950

900×320×900

950x55x950 mm

1035x90x1035 1035x90x1035


30/36 30/36


6/9 6/9

Refrigerant type

R410A R410A

Design pressure


MPa mm

4.2/1.5

φ9.5/φ15.9

ODφ32

4.2/1.5

φ9.5/φ15.9

ODφ32


Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30








Indoor Unit

Outdoor Unit

Cooling

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input current

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

KCC-48HRDN1

220042800480

220~240-1-50

KOU-48HDN1

220075700540

220~240-1-50

51180-48000-11601

5.46-4.36-2.5

25-18.96-10.8

KCC-48HRDN1

220042800480

220~240-1-50

KOUB-48HDN1-R

220075700690

380-415-3-50

51180-48000-11601

5.46-4.36-2.5

9.0-6.9-4.0

KCC-60HRDN1

220042900010

220~240-1-50

KOUD-60HDN1-R

220075801220

380-415-3-50

56298-53568-14365

6.1-5.2-3.1

9.8-7.43-4.43

Heating

EER

Capacity

Input current

Btu/h

KW

A

3.23

54592-52000-14330

5.6-4.16-2.3

25.6-18.09-10

3.23

54592-52000-14330

5.6-4.16-2.3

9.0-6.7-3.7

3.01

61416-60051-16377

6.1-4.91-2.7

9.8-7.01-3.85

COP

Model

Qty

Indoor fan motor

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

3.66

YDK90-6E

1

143/116/100

3.5uF/450V

770/640/550

3.66

YDK90-6E

1

143/116/100

3.5uF/450V

770/640/550

3.56

YDK90-6E-1

1

143/116/100

4uF/450V

770/640/550

Number of rows


2

21x13.37

2

21x13.37

3

21×13.37

Indoor coil

Fin spacing

Fin type (code) mm


Coil length × height

× width mm

1.5 1.5




1990x252x26.74 1990x252x26.74

1.5



2080×252×40.11

Number of circuits


3

/h

12

1545/1354/1187

12

1545/1354/1187

12

1800/1480/1280


Dimension

(W×H×D)(body)

Packing

(W×H×D)(body)

Indoor unit

Dimension

(W×H×D)(panel)

Packing

(W×H×D)(panel)

Net/Gross weight(body)

Net/Gross weight(panel) dB(A) mm mm mm mm kg kg

44/42/41

840×300×840

900×320×900

950x55x950

1035x90x1035

30/36

6/9

44/42/41

840×300×840

900×320×900

950x55x950

1035x90x1035

30/36

6/9

47/44/43

840×300×840

900×320×900

950x55x950

1035x90x1035

35/39

6/9

Refrigerant type

R410A R410A R410A

Design pressure

Refrigerant Liquid side/ Gas

MPa piping side mm

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9



Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30







MLCAC-UTSM-2010-10

3. Dimensions

Dimensions

Unit: mm

MODEL(Btu/h)

18000

24000

30000

36000

48000

60000

A

230

230

300

300

300

300

B

Ф12.7

Ф15.9

Ф15.9

Ф15.9

Ф15.9

Ф15.9

C

Ф6.4

Ф9.5

Ф9.5

Ф9.5

Ф9.5

Ф9.5

H

>260

>260

>330

>330

>330

>330


Service Space


For 18-48k

MLCAC-UTSM-2010-10

For 60k


MLCAC-UTSM-2010-10


KCC-18HRDN1、KCC-24HRDN1

Wiring Diagrams

KCC-30HRDN1、KCC-36HRDN1、KCC-48HRDN1、KCC-60HRDN1




Airflow velocity

MLCAC-UTSM-2010-10

High pressure switch

Condenser

Condenser temp. sensor

T3

Filter

Electronic expansion valve

Capillary

Filter

T4

Ambient temp. sensor

4-way valve

T5

Discharge temp. sensor

Oil separator

Filter

Oil return

Capillary

Filter

Low pressure switch

Low pressure liquid accumulator Outdoor unit

Evaporator

Evaporator temp. sensor

T2

T1

Room temp. sensor

Indoor unit


MLCAC-UTSM-2010-10


Model

KCC-18HRDN1

KCC-24HRDN1

KCC-30HRDN1

KCC-36HRDN1

KCC-48HRDN1

KCC-60HRDN1

KCC-60HRDN1

Remark:


8. Sound Levels

50

50

50

50

Hz

50

50

50

Indoor Unit

Voltage

220-240

220-240

220-240

220-240

220-240

220-240

220-240

Min Max

198 254

198

198

254

254

198

198

198

207

254

254

254

253


Power

Supply

MFA

15

15

15

15

15

15

15

Model

KCC-18HRDN1

KCC-24HRDN1

KCC-30HRDN1

KCC-36HRDN1

KCC-48HRDN1

KCC-60HRDN1

H

40

42

44

44

44

47

Noise level dB(A)

M

39

41

42

42

42

44

L

37

39

41

41

41

43


Accessories

9. Accessories

INSTALLATION FITTINGS

Name

Installation paper board

Tubing & Fittings

Soundproof / insulation sheath

Connecting pipe group

Out-let pipe sheath

Drainpipe Fittings

Out-let pipe clasp

Drain joint

Seal ring

Remote controller & Its Frame

Remote controller & Its

Frame

Others

Installation accessory

(The product you have might not be provided the following accessories

30

Remote controller holder

Mounting screw(ST2.9×10-C-H)

Alkaline dry batteries (AM4)

Owner's manual

Installation manual

Expansible hook

Installation hook

Orifice

Shape

MLCAC-UTSM-2010-10

1

1

1

1

Quantity

1

2

1

1

1

4

4

1

2

2

1

1

Four-way Cassette Type

MLCAC-UTSM-2010-10

MCC-60HRDN1

Installation Fittings

Tubing ＆ Fittings

Drainpipe Fittings

Name

1. Expansible hook

2. Installation hook

3. Installation paper board

4. Bolt M6

5. Soundproof / insulation sheath

6. Out-let pipe

7. Out-let pipe sheath

8. Out-let pipe clasp

Shape

9. Tightening band


11.

Remote controller holder

Remote controller ＆ Its

Frame

12.

10-C-H)

Mounting screw(ST2.9

13. Remote controller manual


Others

Optional fittings

15. Owner's manual


17. Net work winding

18. Hook for four-way air supply panel

2

1

1

1

2

1

1

Accessories

Quantity

4

4

1

4

2

1

1

1

20

1

1


The Specification of Power


MLCAC-UTSM-2010-10


MLCAC-UTSM-2010-10


Wiring chart

Four-way Cassette Type

Field Wiring

33

Field Wiring MLCAC-UTSM-2010-10


MLCAC-UTSM-2010-10 Duct Type

Duct Type

1. Features .......................................................................... 36

2. Specifications ................................................................ 37

3. Dimensions .................................................................... 40

4. Service Space ................................................................. 41

5. Wiring Diagrams ............................................................ 42

6. Static Pressure ............................................................... 43


8. Sound Levels ................................................................. 46

9. Accessories .................................................................... 47


11. Field Wiring .................................................................. 49

Duct Type 35

Features

1. Features

● New structure design.

● Built-in drainage pump (Optical).

● Two air intake ways: from below or rear (standard).

● Wire controller is standard.

● Three speeds indoor unit.

● Fresh air inlet hole is reserved.

MLCAC-UTSM-2010-10

36 Duct Type



Model

KTB-12HWDN1 KTB-18HWDN1 KTB-24HWDN1

Indoor Unit

Code

220070100130 220070200110 220070300130

Power supply V-ph-Hz

220~240-1-50 220~240-1-50 220~240-1-50

Outdoor

Unit

Model

Code

KOU-12HDN1

220075100071

KOUA-18HDN1-C0

220075200340

KOUB-24HDN1

220075301070

Power supply

Capacity

V-ph-Hz

Btu/h

220~240-1-50 220~240-1-50 220~240-1-50

13102-12000-4777 21700-18000-7233 28524-24000-9519

Input KW

1.42-0.98-0.47 2.28-1.63-0.76 3.01-2.19-1.00

Cooling

Rated current A

6.5-4.9-2.2 10.4-7.4-3.5 13.7-10.0-4.6

EER

3.27 3.25 3.24

Capacity Btu/h

15490-13000-5152 24532-20000-8188 32891-26000-10952

Input KW

1.46-1.08-0.49 2.33-1.64-0.78 3.13-2.09-1.04

Heating

Rated current A

6.4-4.9-2.1 10.7-7.5-3.6 13.9-9.6-4.8

COP

3.7

YSK25-4P

3.66

YSK68-4P

3.64

YSK74-4P

Model

Qty 1 1 1

Indoor fan motor

Input

Capacitor

W

μF r/min

107/65/52

2μF /450V

1150/800/700

107/65/52

3.5μF /450V

1150/800/700

163/93/75

3.5μF /450V

1000/750/680

Speed(Hi/Mi/Lo)

Number of rows


2

21×13.37

3

21×13.37

4

21×13.37

Indoor coil

Fin spacing

Fin type (code)



1.5


φ7 Inner grooved copper tube

735×252×26.74

1.5



735×252×40.11

1.5



735×252×53.48

Number of circuits


3

/h

3

800/610/520

4

1170/770/650

6

1400/1100/1000

Indoor external static pressure (Hi)

Pa 40 70 70

Indoor noise level (Hi/Med/Lo) dB(A) 37/30/26 44/36/33 45/43/41

Dimension (W×H×D) mm 920x210x635 920x210x635 920x270x635

Indoor unit

Packing (W×H×D) mm 1135x290x655 1135x290x655 1135x350x655

Net/Gross weight kg 25/30 26/31 30/35

Refrigerant type

R410A R410A R410A

Design pressure

Refrigerant

Liquid side/ Gas side piping

MPa mm

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ9.5/φ15.9



Controller


℃

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30






Duct Type 37


Indoor Unit

Model

Code

Power supply

Model

Code

V-ph-Hz

KTB-30HWDN1

220070400040

220~240-1-50

KOU-30HDN1

220075401041

KTB-36HWDN1

220070500750

220~240-1-50

KOU-36HDN1

220075500651

KTB-36HWDN1

220070500750

220~240-1-50

KOUB-36HDN1-R

220075500920

Outdoor

Unit

Power supply

Capacity

V-ph-Hz

Btu/h

220~240-1-50 220~240-1-50 380~415-3-50

36883-30000-12317 42104-36000-14057 42104-36000-14057

Cooling

Input

Rated current

KW

A

3.98-2.79-1.33

18.3-12.8-6.1

3.23

4.39-3.25-1.45

19.7-14.6-6.7

3.23

4.39-3.25-1.45

7.0-5.2-2.3

3.23

Heating

EER

Capacity

Input

Rated current

COP

Btu/h

KW

A

41490-32000-13818

3.92-2.62-1.31

18.0-12.0-6.0

3.63

51385-40000-17128

4.87-3.31-1.62

22.2-15.1-7.4

3.63

51385-40000-17128

4.87-3.31-1.62

7.8-5.3-2.6

3.63

Model

Qty

YSK100-4P

1

YSK140-4P

1

YSK140-4P

1

Indoor fan motor

Input

Capacitor

W

μF r/min

227/142/115

10

μF /450V

935/700/620

291/168/138

10μF / 450V

1070/790/710

291/168/138

10μF /450V

1070/790/710

Speed(Hi/Mi/Lo)

Number of rows


4

21×13.37

4

21×13.37

4

21×13.37

Indoor coil

Fin spacing

Fin type (code)



1.5



955×336×53.48

1.5



955×336×53.48

1.5



955×336×53.48

Number of circuits


3

/h

8

2250/1940/1720

8

2270/1890/1650

8

2270/1890/1650


Pa 80 80 80



Indoor unit



Refrigerant type

R410A R410A R410A

Design pressure

Refrigerant piping

Liquid side/ Gas side

MPa mm

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9



Controller


℃

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30






38 Duct Type


Indoor Unit

Outdoor

Unit

Cooling

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input

Rated current

EER

Capacity

Input

Rated current

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

KTB-48HWDN1

220070700100

220~240-1-50

KOU-48HDN1

220075700341

KTB-48HWDN1

220070700100

220~240-1-50

KOUB-48HDN1-R

220075700690

KTB-60HWDN1

220070800170

220~240-1-50

KOUA-60HDN1-R

220075800161

220~240-1-50 380~415-3-50 380~415-3-50

51658-48000-17230 51658-48000-17230 57731-54592-19243

5.53-4.35-1.84

25.3-19.9-8.4

5.53-4.35-1.84

8.9-7.0-3.0

6.22-4.99-2.07

10.0-8.0-4.1

3.22 3.22 3.21

59983-52000-19994 59983-52000-19994 68786-60000-22928

5.71-4.16-1.90

25.0-19.0-8.7

5.71-4.16-1.90

9.2-6.7-3.1

6.59-4.85-2.20

10.6-7.8-3.5

Heating

Btu/h

KW

A

COP 3.61 3.61 3.61

Model

Qty

YSK170-4P

1

YSK170-4P

1

YSK180-4P

1

Indoor fan motor

Input

Capacitor

W

μF r/min

356/201/152

10μF /450V

1070/750/650

356/201/152

10μF /450V

1070/750/650

355/223/173

10μF /450V

1080/830/710

Speed(Hi/Mi/Lo)

Number of rows


4

21×13.37

4

21×13.37

4

21×13.37

Fin spacing mm 1.5 1.5 1.5

Indoor coil

Fin type (code)


Coil length × height × width mm mm

Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum




1030×378×53.48 955×336×53.48 1030×378×53.48

Number of circuits


3

/h

8

3010/2410/1940

8

3010/2410/1940

8

3150/2510/1990


Pa 100 100 100



Indoor unit



Refrigerant type

R410A R410A R410A

Design pressure

Refrigerant

Liquid side/ Gas side piping

MPa mm

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9

4.2/1.5

φ9.5/φ15.9



Controller


℃

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30

KJR-10B/DP(T)-E

17-30


Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB; Equivalent ref. piping: 7.5m (horizontal);




Duct Type 39

Dimensions

3. Dimensions

MLCAC-UTSM-2010-10

40

Capacity

(KBtu)

12/18

24

30/36

48/60

A

Outline dimension(mm)

B C

Air outlet o pening size

D E F G H

Air return opening size

I J K

920 210 635 570 65 713 35 119 815 200 80

920 270 635 570 65 713 35 179 815 260 20

1140 270 775 710 65 933 35 179 1035 260 20

1200 300 865 800 80 968 40 204 1094 288 45

Size of outline dimension mounted plug

L M

960

960

350

350

1180

1240

490

500

Duct Type

MLCAC-UTSM-2010-10


Ensure enough space required for installation and maintenance.

Service Space

All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:

Duct Type 41

Wiring Diagrams


KTB-12HWDN1

MLCAC-UTSM-2010-10

FUN CTION OF SWITCH

SW 1

ENC 2

SWITCH

(FOR INDOOR UNIT

ADDRESS)

' 0～F ' o f t he E NC2 an d 'O N/O FF' of the Sw1 mean the addresses of the different units,

respectively.

S1

S2

SWITCH

(FOR CCM UNIT

ADDRESS)

'0～F' of the S2 and 'ON/OFF' of the S1 mean the addresses of the different net units,

respectively.

E NC1

SWITCH

NUMBER

4

5

7

8

9

(FOR POWER)

POWER

5 300W

5 600W

7 100W

9 000W

1 0500 W

140 00W

160 00W

D M

Y/G

XS1

XP1

BLAC K

L N

IND OOR POWE R

DISPLAY BOARD

TO WIRE

CONTROLLER

KTB-18HWDN1 KTB1-24HWDN1 KTB-30HWDN1

KTB-36HWDN1 KTB-48HWDN1 KTB-60HWDN1

202 07 03903 85 TR

C ODE

FM

DM

C S

H /P2

CH /P3

T1

T2B

T2

XP 1-4

XS 1-4

T R

T ITLE

FAN MOTO R

PU MP M OTOR

WAT ER L EVEL SWI TCH

HIG H FA N

SUPE R HI GH F AN

R OOM TEMP .

O UTER PIP E TE MP.

MIDD LE P IPE TEMP .

CON NECT ORS

TRAN SFOR MER

CN 1

C N13

CN 11

CN2

P 3

C H

P 2

Ｈ

S3

ENC1

SW1

ENC2

MAIN BOARD

S1

S2

CN1 0

CN9

CN1 7

CN7

CN 6

CN 2 3

CN5

CN 4

C N 3 3

C S

BR OWN

BLAC K

CN5

CN 3

CN 4 CN2

CN 1

ALARM

ON/OFF

X Y E P Q E

WHIT E

W HITE

FM

Y/G

W HITE

BLAC K

E RROR

O UTPU T

TO CCM

CO MM.B US

TO OUTD OOR

COM M.BU S

NOT E:PL EASE USE SHI ELDE R WI RE F OR C OMM .BUS WIR E,

REMO TE

CONT ROL

42 Duct Type

MLCAC-UTSM-2010-10

6. Static Pressure

KTB-12HWDN1 KTB-18HWDN1

Static Pressure

Pa

Pa

90

90

80

80

70

70

Super high speed

60

60

High speed

50

50

40

40

Super high speed

Mid speed

30

20

High speed

Mid speed

Low speed

30

20

Low speed

10

10

0

300 400 500 600 700

Air volume(m /h)

800 900

200 300 400 500 600

Air volume(m

3

/h)

700 800 900 1000

KTB1-24HWDN1 KTB-30HWDN1

1100 1200

60

50

80

70

Pa

90

20

10

40

30

Super high speed

High speed

Mid speed

Low speed

Duct Type

700 800 900 1000 1100

Air volume(m

3

/h)

1200 1300 1400

1500

60

50

40

30

Pa

90

80

70

20

10

Super high speed

High speed

Mid speed

Low speed

1200 1400 1600 1800 2000

Air volume(m

3

/h)

2200 2400

43

44

110

20

10

40

30

60

50

100

90

80

70

Static Pressure

Pa

90

80

70

60

50

40

30

20

10

MLCAC-UTSM-2010-10

KTB-36HWDN1 KTB-48HWDN1

Pa

120

Super high speed

High speed

Mid speed

Low speed

110

100

90

80

70

60

50

40

30

20

10

Super high speed

High speed

Mid speed

Low speed

1100 1200 1400 1600

1800 2000

Air volume(m /h)

2200

2400

1000

1300 1600 1900

2200 2500

Air volume(m /h)

2800 3100

KTB-60HWDN1

Pa

120

Super high speed

High speed

Mid speed

Low speed

1000 1300 1600 1900

2200

Air volume(m

3

/h)

2500 2800 3100

3400

Duct Type

MLCAC-UTSM-2010-10


Model

KTB-12HWDN1

KTB-18HWDN1

KTB1-24HWDN1

KTB-30HWDN1

KTB-36HWDN1

KTB-48HWDN1

KTB-60HWDN1

Remark:


50

50

50

50

Hz

50

50

50

Indoor Unit

Voltage Min.

220-240

220-240

220-240

207

207

207

220-240

220-240

220-240

220-240

207

207

207

207

Max.

253

253

253

253

253

253

253


Power Supply

MFA

15

15

15

15

15

15

15

Duct Type 45

Sound Levels

8. Sound Levels

Concealed Duct Type

Discharge

Duct

Suction

Duct

MLCAC-UTSM-2010-10

Model

KTB-12HWDN1

KTB-18HWDN1

KTB1-24HWDN1

KTB-30HWDN1

KTB-36HWDN1

KTB-48HWDN1

KTB-60HWDN1

1.4m

46

46

47

47

H

37

44

45

Microphone

Noise level dB(A)

M

30

36

43

44

44

45

45

42

42

43

43

L

26

33

41

46 Duct Type

MLCAC-UTSM-2010-10

9. Accessories

Name

Soundproof / insulation sheath

Tubing & Fittings

Binding tape

Seal sponge

Drain joint

Drainpipe Fittings

(for cooling & heating)

Seal ring

Remote controller

Frame

Remote controller ＆ Its Frame

Mounting screw(ST2.9 10-C-H)


Remote controller

manual

Wired controller & Its Frame

Wired controller

Owner

， s manual

Others

Installation manual

EMS & It’s fitting

Magnetic ring (twist the electric wires L and N around it to five circles)

Accessories

Shape Quantity

2

1

1

1

1

1

1

2

2

1

1

1

1

1

Duct Type 47



MLCAC-UTSM-2010-10

48 Duct Type

MLCAC-UTSM-2010-10


Field Wiring

Duct Type 49

50

Field Wiring

Air-conditioner link-circuit.

MLCAC-UTSM-2010-10

Duct Type

MLCAC-UTSM-2010-10 Field Wiring

Duct Type 51

Field Wiring MLCAC-UTSM-2010-10

52 Duct Type

MLCAC-UTSM-2010-10 Ceiling & Floor Type

Ceiling & Floor Type

1. Features .......................................................................... 54

2. Specifications ................................................................ 55

3. Dimensions .................................................................... 58

4. Service Space ................................................................. 60

5. Wiring Diagrams ............................................................ 61



8. Sound Levels ................................................................. 66

9. Accessories .................................................................... 67


11. Field Wiring .................................................................. 69

Ceiling & Floor Type 53

Features

1. Features

1.1. New design, more modern and elegant appearance.

MLCAC-UTSM-2010-10

1.2. Convenient installation

--The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow

--It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting.

1.3. Two direction auto swing (vertical & horizontal) and wide angle air flow,

--Air flow directional control minimizes the air resistance and produces wilder air flow to vertical direction.

--The range of horizontal air discharge is widened which secures wider air flow distribution to provide more comfortable air circulation no matter where the unit is set up

1.4. Three level fan speed, more humanism design, meets different air-supply requirement.

1.5. Water proof by utilizing the absorbing plastic film on water collector

1.6. Easy operation. Auto-restart function, remote control and optional wire control method.

1.7. Low noise level plus compact size

--Shape of the blades has been improved to prevent noise caused by turbulence.

54 Ceiling & Floor Type



Model

KUB-12HRDN1 KUB-18HRDN1 KUB-24HRDN1

Indoor Unit

Code

220044000060 220044100120 220044200240

Outdoor

Unit

Power supply

Model

Code

V-ph-Hz

220~240-1-50

KOU-12HDN1

220075100071

220~240-1-50

KOUA-18HDN1-C0

220075200340

220~240-1-50

KOUB-24HDN1

220075301070

Power supply

Capacity

V-ph-Hz

Btu/h

220~240-1-50 220~240-1-50 220~240-1-50

13648-12000-4777 19278-17981-5561 26955-23993-5561

Cooling

Input current

EER

Capacity

KW

A

Btu/h

1.27-0.99-0.32

2.6-1.63-0.57 2.8-2.18-0.98

5.9-4.67-1.68

12.3-7.09-2.47 13.2-9.9-4.26

3.24

3.24 3.22

16207-13000-4777 20984-19994-4947 29343-26494-5971

Heating

Input current

KW

A

1.38-1.07-0.36

6.41-5.05-1.89

2.34-1.59-0.72

11.07-6.91-3.13

2.60-2.12-1.05

12.23-9.22-4.56

COP

Model

Qty

3.73

YSK25-6L

1

3.69

YSK55-4L

1

3.66

YSK55-4L

1

Indoor fan motor

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

33.4/31.1/29.5

1.5uF/450V

756/666/592

125/105/85

2.5uF/450V

1310/1190/1040

125/105/85

2.5uF/450V

1310/1190/1040

Number of rows

3 3 3


25.4×22 25.4 x 22 25.4 x 22

Indoor coil

Fin spacing

Fin type (code)


1.7

Hydrophilic aluminium

Ф9.53 Inner grooved copper tube

1.7



1.7


Ф9.53 Inner grooved copper tube mm


804x254x66 804x254x66 804x254x66

Number of circuits


3

/h

3

584/518/463

3

800/600/500

3

1000/900/700

Indoor noise level (Hi/Med/Lo) dB(A)

40/37/33 43/41/38 45/43/40

Dimension (W×H×D) mm

990x203x660 990 x203 x660 990 x203 x660

Indoor unit

Packing (W×H×D) mm

1037x238x739 1037x238x739 1037x238x739

Net/Gross weight kg

27/33 29/35 29/35

Refrigerant type

R410A R410A R410A

Design pressure


MPa mm

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ9.5/φ15.9



Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30







Specifications

MLCAC-UTSM-2010-10

Indoor Unit

Outdoor

Unit

Cooling

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input current

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

KUB-30HRDN1

220044300000

220~240-1-50

KOU-30HDN1

220075401041

220~240-1-50

KUB-36HRDN1

220044400310

220~240-1-50

KOU-36HDN1

KUB-36HRDN1

220044400310

220~240-1-50

KOUB-36HDN1-R

32414-29998-7506 45038-36000-10236 45038-36000-10236

4.6-2.71-1.1

23-11.78-4.78

220075500651

220~240-1-50

5.5-3.25-2.3

25-14.13-10

220075500920

380-415-3-50

5.5-3.25-2.3

7.53-4.72-3.30

Heating

EER

Capacity

Input current

Btu/h

KW

A

3.24 3.25

3.25

37532-34000-8870 47768-40000-12624 47768-40000-12624

4.28-2.72-1.3

21.4-11.83-5.65

5.20-3.2-2.0

23.64-13.91-8.69

5.2-3.2-2.0

5.98-4.47-1.49

Indoor fan motor

COP

Model

Qty

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

3.66

YSK80-4A-2

1

159/142/130

3.5uF/450V

1290/1170/1060

3.66

YSK80-4A-2

1

159/142/130

3.5uF/450V

1290/1170/1060

3.66

YSK80-4A

1

143/122/110

3.5uF/450V

1310/1210/1115

Number of rows


3

25.4 x 22

3

25.4 x 22

3

25.4 x 22

Indoor coil

Fin spacing

Fin type (code)



1.7



1094 x 254 x 66

1.7



1094 x 254 x 66

1.7


1094 x 254 x 66

Number of circuits


3

/h

5

1200/1000/800

5

1400/1200/1000

5

1400/1200/1000


45/43/40 45/43/40 45/43/40


1280x203x660 1280x203x660 1280x203x660

Indoor unit


1327x238x739 1327x238x739 1327x238x739

Net/Gross weight kg

32/38 37/42 37/42

Refrigerant type

R410A R410A R410A

Design pressure


MPa mm

4.2/1.5

Ф9.5/Ф15.9

4.2/1.5

Ф9.5/Ф15.9

4.2/1.5

Ф9.5/Ф15.9



Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30








Model

KUB-48HRDN1 KUB-48HRDN1 KUB-60HRDN1

Indoor Unit

Code

220044600230 220044600230 220044700210

Power supply V-ph-Hz

220~240-1-50

KOU-48HDN1

220~240-1-50

KOUB-48HDN1-R

220~240-1-50

KOUA-60HRDN1

Outdoor

Unit

Model

Code

220075700341 220075700690 220075800161

Cooling

Power supply

Capacity

Input current

EER

Capacity

V-ph-Hz

Btu/h

KW

A

Btu/h

220~240-1-50 380-415-3-50 380-415-3-50

53227-48000-11601 53227-48000-11601 57322-54592-14501

6.0-4.32-2.5

28-18.78-10.8

6.0-4.32-2.5

8.5-6.27-3.60

7.5-4.97-3.0

11.5-7.20-4.3

3.26

3.26

3.22

56298-52000-14330 56298-52000-14330 61416-60051-16377

Heating

Input current

COP

Model

Qty

KW

A

5.59-4.13-2.3

26.07-17.96-10

3.69

YSK59-4D-4

2

5.59-4.13-2.3

8.48-6.19-2.08

3.69

YSK59-4D-4

2

6.28-4.87-1.65

9.63-7.06-2.37

3.61

YSK59-4D-4

2

Indoor fan motor

Input

Capacitor

Speed(Hi/Mi/Lo)

W

μF r/min

102/98/96

2.5uF/450V

1230/1130/1070

102/98/96

2.5uF/450V

1230/1130/1070

102/98/96

2.5uF/450V

1230/1130/1070

Number of rows


3

25.4 x 22

3

25.4 x 22

3

25.4 x 22

Indoor coil

Fin spacing

Fin type (code)



1.7 1.7 1.7

Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum




1360 x 254 x 66 1360 x 254 x 66 1360 x 254 x 66

Number of circuits


3

/h

5

2000/1800/1600

5

2000/1800/1600

5

2000/1800/1600


47/46/44 47/46/44 47/46/44


1670 x 240 x 680 1670 x 240 x 680 1670 x 240 x 680

Indoor unit


1715x273x760 1715x273x760 1715x273x760

Net/Gross weight kg

52/59 52/59 52/59

Refrigerant type

R410A R410A R410A

Design pressure


MPa mm

4.2/1.5

Ф9.5/Ф15.9

4.2/1.5

Ф9.5/Ф15.9

4.2/1.5

Ф9.5/Ф15.9



Controller


℃

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30

R05/BGE (standard)

17-30







Dimensions

3. Dimensions a. Wall mounting installation

MLCAC-UTSM-2010-10

b. Ceiling installation


MLCAC-UTSM-2010-10 Dimensions

Capacity(Btu/h)

12000-24000Btu/h

30000-36000Btu/h

48000-60000Btu/h

A

990

1280

1670

B

660

660

680

C

206

206

244

D

505

795

1070

E

506

506

450

F

907

1195

1542

G

200

200

200

H

203

203

240


Service Space


MLCAC-UTSM-2010-10


MLCAC-UTSM-2010-10


KUB-12HRDN1

Wiring Diagrams


62

Wiring Diagrams

KUB-18HRDN1、KUB-24HRDN1

MLCAC-UTSM-2010-10

KUB-30HRDN1、KUB-36HRDN1、KUB-48HRDN1、KUB-60HRDN1

Ceiling & Floor Type

MLCAC-UTSM-2010-10


Discharge angle 60° (CEILING)

Airflow velocity



T5


Oil separator

Filter

Oil return

Capillary

Condenser



T3

Filter

Capillary

Filter

T4


4-way valve

Filter


Low pressure liquid accumulator Outdoor unit

Evaporator


T2

T1


Indoor unit



Discharge angle 60°(FLOOR)

Airflow velocity

MLCAC-UTSM-2010-10

Temperature


MLCAC-UTSM-2010-10


Model

MUB-12HRDN1

MUB-18HRDN1

MUB-24HRDN1

MUB-30HRDN1

MUB-36HRDN1

MUB-48HRDN1

MUB-60HRDN1

Remark:



Hz

Indoor Unit

Voltage Min Max

50 220~240 198 254

50 220~240 198 254

50 220~240 198 254

50 220~240 198 254

50 220~240 198 254

50 220~240 198 254

50 220~240 198 254

Power Supply

MFA

20

15

15

15

15

15

15


Sound Levels

8. Sound Levels

MLCAC-UTSM-2010-10

Ceiling

Model

KUB-12HRDN1

KUB-18HRDN1

KUB-24HRDN1

KUB-30HRDN1

KUB-36HRDN1

KUB-48HRDN1

KUB-60HRDN1

45

45

47

47

H

40

43

45

Noise level dB(A)

M

37

41

43

43

43

46

46

Floor

40

40

44

44

L

33

38

40


MLCAC-UTSM-2010-10

9. Accessories

Name

1.Hook

Installation fittings

2.Hanging arm


Remote controller & Its holder

Others

4. Remote controller holder

5. Mounting screw (ST2.9×10-C-H)


7. Owner's manual


9. Remote controller manual

Shape

1

1

2

2

1

1

1

Accessories

Quantity

2

2




MLCAC-UTSM-2010-10


MLCAC-UTSM-2010-10



Field Wiring

69

Field Wiring

70

MLCAC-UTSM-2010-10


MLCAC-UTSM-2010-10 Field Wiring


Console Type

MLCAC-UTSM-2010-10

Console Type

1. Features .......................................................................... 73

2. Specifications ................................................................ 74

3. Dimensions .................................................................... 75

4. Service Space ................................................................. 76

5. Wiring Diagrams ............................................................ 77



8. Sound Levels ................................................................. 80

9. Accessories .................................................................... 81


11. Field Wiring .................................................................. 83

72 Console Type

MLCAC-UTSM-2010-10

1. Features

1.1. Consumes up to 30% less energy than non-inverter units

——DC inverter compressor

——indoor fan motor adopts DC motor

1.2. Achieves set temperature more quickly

——air supplying from top and bottom or from top only

——air inlet from four directions

Features

1.3. Compact unit body, space saving

——this unit body is very thin and harmonious with room. It is beautiful, elegant and space saving.

——lightweight and compact.

1.4. Flexible installation.

——can be used for floor standing or lower wall applications

——as a floor standing floor model, it can be semi or fully recessed without loss of capacity.

1.5. High efficiency filter

——built in Formaldehyde nemesis filter

——active-carbon and biological anti-virus filter is optional.

1.6. Comfort

——flexible air blow: vertical auto swing and wide angle louvers ensure that warm air reaches the furthest corners of the room and increase the air flow coverage

——Low noise operation, lowest to 23Db

——Low starting power and precise room temperature adjustment

1.7. Powerful mode can be selected for rapid cooling or heating.

1.8. Easy cleaning grille and maintenance

1.9. Indoor unit adopts DC motor, it has five level fan speed meet different requirements.

Console Type 73

Specifications

MLCAC-UTSM-2010-10


Indoor Unit

Outdoor Unit

Cooling

Heating

Indoor fan motor

Indoor coil

Model

Code

Power supply

Model

Code

Power supply

Capacity

Input current

EER

Capacity

Input current

COP

Model

Qty

Input

Capacitor

Speed(Hi/Mi/Lo)

Number of rows

Tube pitch(a)×row pitch(b)

Fin spacing

Fin type (code)


Coil length × height × width

Number of circuits

Indoor air flow(Hi/Med/Lo)


Indoor unit

Dimension (W×H×D)

Packing (W×H×D)

V-ph-Hz

V-ph-Hz

Btu/h

KW

A

Btu/h

KW

A

W

μF r/min mm mm mm mm m

3

/h dB(A) mm mm

KFA-12HRDN1

220044000070

220~240-1-50

KOU-12HDN1

220075100071

220~240-1-50

13989-11942-4777

1.37-1.08-0.34

6.8-4.3-2.0

3.24

16719-13648-4777

1.42-1.105-0.37

6.69-5.21-1.95

3.62

RD-280-20-8A

1

18

/

680/610/560/460/420

2

21x13.37

1.3



512x378x26.74

2

550/(490)/460/380/350

38/(35)/33/31/28

700x600x210

810x710x305

KFA-18HRDN1

220044100190

220~240-1-50

KOUA-18HDN1-C0

220075200340

220~240-1-50

19448-17981-5800

2.06-1.63-0.52

9.72-7.08-2.26

3.23

21154-19994-4947

2.09-1.623-0.55

9.5-7.05-2.39

3.61

RD-280-20-8A

1

28

/

890/840/780/680/530

2

21x13.37

1.3



512x378x26.74

2

740/(700)/640/560/440

44/(41)/39/37/34

700x600x210

810x710x305

Net/Gross weight kg 15/20

R410A

15/20

R410A

Refrigerant type

Design pressure


MPa mm

4.2/1.5

φ6.4/φ12.7

4.2/1.5

φ6.4/φ12.7


ODφ16 ODφ16

Controller


℃

R51D/E (standard)

17-30

R51D/E (standard)

17-30

Notes: 1. Nominal cooling capacities are based on the following conditions:

Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB;


Indoor temp: 20°CDB; Outdoor temp: 7°CDB, 6°CWB;


74 Console Type

MLCAC-UTSM-2010-10

3. Dimensions

KFA-12HRDN1/ KFA-18HRDN1

Dimensions

Console Type 75

Service Space


MLCAC-UTSM-2010-10

76 Console Type

MLCAC-UTSM-2010-10


KFA-12HRDN1

Wiring Diagrams

KFA-18HRDN1

FUNCTION OF SWITCHES

SWITCH BOARD

SWITCH BOARD

CN1 5

CN10

DIS PLAY BOARD

TEMP.COMPEN SA TIO N

SW102 TEM P.

6℃

4℃

2℃

TO CCM

0℃

(FACTORY SETTING)

MO/ MU

SW103

FAN (EF FE CTIVE IN P OW ERFUL MODE)

RESERVED

T HE STRONGE ST LEVEL OF

A IR FLOW RA TE

THE SECON D STRONG EST

LEV EL OF AIR FLOW RATE

(FA CTORY SETTING)

RT2

BLACK

CN7

MAIN CONTROL BOARD

CN13

CN6

COMM

CN1 4

L N

CN1 CN2

WHITE

PIPE ROOM

RT1

M1 M2

XT1

L

N

P Q E

TO O UTDOOR UNIT

FAN

Y/G

TO WIRE CONTROLLER

CODE

C N1-20

FAN

M1

M2

R T1

R T2

X P1 -XP5

X S1 -XS5

X T1

JP1

WIRING DIAGRAM

INDOOR UNIT

PART NAME

P.C BOARD SOCKETS

INDOOR DC FAN MOTOR

UPPER O UT LET SWIN G MOTOR

LOWER O UT LET SWIN G MOTOR

ROOM TE MPERATURE

PIPE TE MPERATURE

CONNECT OR S

CONNECT OR S

6-WAY T ER MINAL

JUMPER

202044190037

Console Type 77

78



Discharge angle 60

Airflow velocity

MLCAC-UTSM-2010-10

Temperature

Console Type

MLCAC-UTSM-2010-10


Model

KFA-12HRDN1

KFA-18HRDN1

Remark:


Hz

50

50

Indoor Unit

Voltage Min

220~240V 198V

220~240V 198V

Max

254V

254V


Power Supply

MFA

16

16

Console Type 79

Sound Levels

8. Sound Levels

MLCAC-UTSM-2010-10

Model

KFA-12HRDN1

KFA-18HRDN1

Highest

38

44

Higher

35

41

Noise level dB(A)

H

33

39

M

31

37

L

28

34

80 Console Type

MLCAC-UTSM-2010-10

9. Accessories

KFA-12HRDN1/ KFA-18HRDN1

Installation fittings

Hook

Name

Remote controller

Remote controller & Its Frame

Frame

Others

Mounting screw(ST2.9×10-C-H)


Installation manual

Owner's manual

Accessories

Shape

/

/

Quantity

2

1

1

2

2

1

1

Console Type 81



MLCAC-UTSM-2010-10

82 Console Type

MLCAC-UTSM-2010-10


Console Type

Field Wiring

83

Field Wiring

MLCAC-UTSM-2010-10

84 Console Type

Outdoor Units MLCAC-UTSM-2010-10

Part 3

Outdoor Units

1. Specification ................................................................... 87

2. Dimensions .................................................................... 92

3. Service Space ................................................................. 93

4. Piping Diagrams ............................................................ 94

5. Wiring Diagrams ............................................................ 95

6. Electric Characteristics ............................................... 100

7. Operation Limits .......................................................... 101

8. Sound Levels ............................................................... 102

9. Troubleshooting ........................................................... 103

86 Outdoor Units

MLCAC-UTSM-2010-10 Specification

1. Specification

Outdoor

Max. input consumption

Max. current

Model

Type

A

Model name

Code

Power supply

W

KOU-12HDN1

220075100071

220~240V-1 Ph-50Hz

1500

7.0

DA108X1C-20FZ3

Rotary DC Inverter

KOUA-18HDN1-C0

220075200340

220~240V-1 Ph-50Hz

2400

13.1

C-6RVN93H0V

Scroll DC Inverter

Compressor

Brand

Capacity

Input

Rated current(RLA)

Btu/h

W

A

GMCC

10918.4

855

5.3

Shenyang SANYO

19277.8

1470

8.96

Outdoor fan motor

Refrigerant oil

Model

Qty

Input

Capacitor

Speed

Number of rows

Tube pitch(a)x row pitch(b)

Fin spacing

Fin type (code)

Outdoor coil


Coil length x height x width

Number of circuits

Outdoor air flow(Hi/Low) ml

W uF r/min

mm mm

mm mm

ESTER OIL VG74 480ml

YDK24-6G

1

67/48

/

800/550

2

25.4×22

1.4



654×558.8×44

FV 50S, 350

YDK53-6Y

1

129/86

3uF/450V

770/560

2

22×19.05

1.4



778×660×38.1

m

3

/h

2

2500/1600

48/44

2

2570/2300

Sound level(sound pressure)(Hi/Low) dB(A) 51/46

Dimension(W x D x H) mm

761×593×279

842×695×324

Outdoor unit Packing (W x D x H) mm

887×655×355

965x752x399

Throttle type

Net/Gross weight

Type kg

g

39.5/42.5

R410A

1400

Capillary

59/63

R410A

Refrigerant

Charged volume 1600

Electronic expansion valve &

Capillary

Design pressure(Hi/Low)

Refrigerant piping

MPa

Liquid side/ Gas side mm

Max. refrigerant pipe length m

Max. difference in level m

4.2/1.5

Ф6.4/Ф12.7

10

4.2/1.5

Ф6.4/Ф12.7

25

5 12

Ambient temp (Outdoor)

℃

Cooling：0~43;

Heating：-15~24

Cooling：-15~43;

Heating：-15~24






Outdoor Unit 87

Specification MLCAC-UTSM-2010-10

Outdoor


Max. current

Compressor

Model

Type

Brand

Capacity

Input

Rated current(RLA)

Refrigerant oil

Model

Qty

A ml

Outdoor fan motor

Input

Capacitor

W uF

Speed

Number of rows


Fin spacing r/min

mm

Outdoor coil

Fin type (code)



Number of circuits mm

mm mm

Outdoor air flow(Hi/Low)

Sound level(sound pressure)(Hi/Low)

m

3

/h dB(A)



A

Model name

Code

Power supply

W

Btu/h

W

KOUB-24HDN1

220075301070

220~240V-1 Ph-50Hz

3250

15.48

ATL165SD-C9AU

Rotary DC Inverter

HITACHI

15525

1530

10.4

68HES-H,880

YDK53-6Z

1

141.5/92

3uF/450V

815/550

2

25.4 x 22

1.5



758x813x44

KOU-30HDN1

220075401041

220~240V-1 Ph-50Hz

4600

23

TNB220FLBM1

Rotary DC Inverter

MITSUBISHI ELECTRIC

24328

2200

9.7

MEL 56, 670

YDK250-6E

1

307/194

10uF±5% 450V

740/530

2

25.4×22

1.7



876x914.4x44

2

3200/2850

53/48

895×862×313

1043×915×395

4

5000/4800

57/50

990×966×354

1120×1100×435

Throttle type

Net/Gross weight

Type

Design pressure(Hi/Low) kg

g

MPa

73/76

R410A

92/100

R410A

Refrigerant

Charged volume 2300


Capillary

4.2/1.5

Ф9.5/Ф15.9

3350


Capillary

4.2/1.5

Ф9.5/Ф15.9

Refrigerant piping




25 25

12 15


℃

Cooling：-15~43;

Heating：-15~24

Cooling：-15~43；

Heating：-15~24






88 Outdoor Units


Outdoor


Max. current

Model

Compressor

Type

Brand

Capacity

Input

A

Model name

Code

Power supply

W

Btu/h

W

KOU-36HDN1

220075500651

220~240V-1 Ph-50Hz

5500

25

TNB306FPGM

Rotary DC Inverter

MITSUBISHI ELECTRIC

33642

3080

KOUB-36HDN1-R

220075500920

380V~3 Ph-50Hz

5500

10

TNB306FPNM

Rotary DC Inverter

MITSUBISHI ELECTRIC

33710

3010

Rated current(RLA)

Refrigerant oil

Model

Qty

A ml

Outdoor fan motor

Input

Capacitor

W uF

Speed

Number of rows


Fin spacing r/min

mm

Outdoor coil

Fin type (code)




mm mm



m

3

/h dB(A)



13.5

FV50S, 1100

YDK100-6A

2

185/120

3.5uF/450V

860/610

3

25.4×22

1.5



887 x 1220x 66

8

6000/5800

57/52

940×1245×360

1058×1380×438

9.3

FV50S, 870

YDK250-6E

1

307/194

10uF±5% 450V

740/530

2

25.4×22

1.7



876×914.4×44

4

5000/4800

55/50

990×966×354

1120×1100×435

Throttle type

Net/Gross weight

Type kg

g

106/114

R410A

87/95

R410A

Refrigerant

Charged volume 4100


Capillary

2900


Capillary


Refrigerant piping

MPa




4.2/1.5

Ф9.5/Ф15.9

30

4.2/1.5

Ф9.5/Ф15.9

30

20 20


℃

Cooling：-15~43；

Heating：-15~24

Cooling：-15~43；

Heating：-15~24






Outdoor Units 89

Specification MLCAC-UTSM-2010-10

Outdoor


Max. current

Model

Compressor

Type

Brand

Capacity

Input

A

Model name

Code

Power supply

W

Btu/h

W

KOU-48HDN1

220075700341

220~240V-1 Ph-50Hz

6000

28

TNB306FPGM

Rotary DC Inverter

MITSUBISHI ELECTRIC

33642

3080

KOUB-48HDN1-R

220075700690

380V~3 Ph-50Hz

6000

12

TNB306FPNM

Rotary DC Inverter

MITSUBISHI ELECTRIC

33710

3010

Rated current(RLA)

Refrigerant oil

Model

Qty

A ml

Outdoor fan motor

Input

Capacitor

W uF

Speed

Number of rows


Fin spacing r/min

mm

Outdoor coil

Fin type (code)

Tube outside dia.and type



mm mm



m

3

/h dB(A)



13.5

FV50S, 1100

YDK100-6A

2

185/120

3.5uF/450V

860/610

3

25.4×22

1.5



887 x 1220x 66

8

6000/5800

59/54

940×1245×360

1058×1380×438

9.3

FV50S, 870

YDK100-6A

2

185/120

3.5uF/450V

860/610

2

25.4×22

1.7



887×1220×44

8

6000/5800

59/54

940×1245×360

1058×1380×438

Throttle type

Net/Gross weight

Type kg

g

106/114

R410A

99/107

R410A

Refrigerant

Charged volume 4450


Capillary

3600


Capillary


Refrigerant piping

MPa




4.2/1.5

Ф9.5/Ф15.9

50

4.2/1.5

Ф9.5/Ф15.9

50

25 25


℃

Cooling：-15~43；

Heating：-15~24

Cooling：-15~43；

Heating：-15~24






90 Outdoor Units


Outdoor


Max. current

Compressor

Model

Type

Brand

Capacity

Input

Rated current(RLA)

Refrigerant oil

Model

Qty

A ml

Outdoor fan motor

Input

Capacitor

W uF

Speed

Number of rows


Fin spacing r/min

mm

Outdoor coil

Fin type (code)




mm mm



m

3

/h dB(A)



A

Model name

Code

Power supply

W

Btu/h

W

KOUA-60HRDN1

220075800161

380V~-3 Ph-50Hz

7500

14

ANB42FBEMT

Scroll DC Inverter

MITSUBISHI

47440

4160

15.2

MEL 56, 1700

YDK100-6A

2

185/120

3.5uF/450V

860/610

2

25.4 x 22

1.7



887×1220×44

KOUD-60HDN1-R

220075801220

380~415V-3 Ph-50Hz

7200

14

ANB42FBEMT

Scroll DC Inverter

MITSUBISHI

47440

4160

15.2

MEL 56, 1700

YDK100-6A

2

185/120

3.5uF/450V

860/610

3

25.4× 22

1.5


Ф9.53 inner grooved copper tube

887×1220×66

4

6000/5800

59/54

940×1245×360

1058×1380×438

8

6000/5800

59/54

940×1245×360

1058×1380×438

Refrigerant

Throttle type

Net/Gross weight

Type

Charged volume kg

g

115/121

R410A

3850


Capillary

124/130

R410A

4000


Capillary

Design pressure(Hi/Low) MPa 4.2/1.5 4.2/1.5


Ф9.5/Ф15.9 Ф9.5/Ф15.9

Refrigerant piping

Max. refrigerant pipe length

Max. difference in level m m

50

25

50

25

Cooling：-15~43； Cooling：-15~43；


℃

Heating：-15~24 Heating：-15~24






Outdoor Units 91

Dimensions

2. Dimensions

MLCAC-UTSM-2010-10

Unit: mm

MODEL

KOU-12HDN1

KOUA-18HDN1-C0

KOUB-24HDN1

KOU-30HDN1

KOU-36HDN1

KOUB-36HDN1-R

KOU-48HDN1

KOUB-48HDN1-R

KOUA-60HRDN1

KOUD-60HDN1-R

A

761

842

895

990

940

990

940

940

940

940

B

530

560

590

624

600

624

600

600

600

600

C

290

335

333

366

376

366

376

376

376

376

D

315

360

355

396

400

396

400

400

400

400

E

270

312

302

340

340

340

340

340

340

340

F

279

324

313

354

360

354

360

360

360

360

H

593

695

862

966

1245

966

1245

1245

1245

1245

92 Outdoor Units

MLCAC-UTSM-2010-10


Service Space

Outdoor Units 93

Piping Diagrams

4. Piping Diagrams

KOU-12HDN1

MLCAC-UTSM-2010-10

Condenser

4-way valve

Capillary ass'y

Evaporator

Compressor

Outdoor unit

KOUA-18HDN1-C0、KOUB-24HDN1


Condenser



T3

Filter Capillary

T4


Filter

4-way valve

T5



Indoor unit

Evaporator

Compressor

Low pressure liquid accumulator

Outdoor unit

Indoor unit

KOU-30HDN1、 KOU-36HDN1、KOU-48HDN1、KOUB-36HDN1-R、KOUB-48HDN1-R、KOUA-60HRDN1、KOUD-60HDN1-R


Condenser


T3

Filter


Capillary

Filter

T5


Oil separator

Filter

Oil return

Capillary

Filter


Low pressure liquid accumulator

T4


4-way valve

Outdoor unit

Evaporator


T2

T1


Indoor unit

94 Outdoor Units

MLCAC-UTSM-2010-10


KOU-12HDN1

Wiring Diagrams

Outdoor Units 95

Wiring Diagrams

KOUA-18HDN1-C0

MLCAC-UTSM-2010-10

KOUB-24HDN1

96 Outdoor Units

MLCAC-UTSM-2010-10

KOU-30HDN1

KOU-36HDN1、KOU-48HDN1

Wiring Diagrams

Outdoor Units 97

Wiring Diagrams

KOUB-36HDN1-R

MLCAC-UTSM-2010-10

KOUB-48HDN1-R、KOUA-60HRDN1

98 Outdoor Units

MLCAC-UTSM-2010-10

KOUD-60HDN1-R

Wiring Diagrams

Outdoor Units 99



Model

KOU-12HDN1

KOUA-18HDN1-C0

KOUB-24HDN1

KOU-30HDN1

KOU-36HDN1

KOU-48HDN1

KOUB-36HDN1-R

KOUB-48HDN1-R

KOUA-60HRDN1

KOUD-60HDN1-R

Remark:


50

50

50

50

50

50

50

Hz

50

50

50

Outdoor Unit

Voltage Min.

220-240

220-240

220-240

198

198

198

220-240

220-240

220-240

380-415

380-415

380-415

380-415

198

198

198

342

342

342

342

Max.

254

254

254

254

254

254

440

440

440

440

MLCAC-UTSM-2010-10

Power Supply

MFA

30

30

30

40

40

40

40

40

40

40

100 Outdoor Units

MLCAC-UTSM-2010-10

7. Operation Limits

12k

Operation Limits

45

43

40

35

30

15

10

5

0

25

21

20

Cooling

STD

10 15 17 20 25 30 35

Indoor temperature(℃ WB)

Heating

15

10

5

25

24

20

STD

0

-5

-10

-15

10 15 17 20 25

30

35

Indoor temperature(℃ DB)

18-60k

Heating

15

10

25

24

20

5

STD

0

-5

-10

-15

10 15 17 20 25

30

35

Indoor temperature(℃ DB)

Outdoor Units 101

Sound Levels

8. Sound Levels

MLCAC-UTSM-2010-10

Model

KOU-12HDN1

KOUA-18HDN1-C0

KOUB-24HDN1

KOU-30HDN1

KOU-36HDN1

KOUB-36HDN1-R

KOU-48HDN1

KOUB-48HDN1-R

KOUA-60HRDN1

KOUD-60HDN1-R

Noise level dB(A)

H/L

48/44

51/46

53/48

57/50

57/52

55/50

59/54

59/54

59/54

59/54

102 Outdoor Units

MLCAC-UTSM-2010-10

9. Troubleshooting

9.1 Indoor unit malfunction

9.1.1 Display board

Compact 4-way cassette

Troubleshooting

Ceiling & Floor Normal 4-way cassette

Duct

Outdoor Units 103

Troubleshooting

9.1.2 Troubleshooting

For Normal 4-way cassette

MLCAC-UTSM-2010-10

For compact 4-way cassette(12K)

104 Outdoor Units

MLCAC-UTSM-2010-10

For compact 4-way cassette(18K)&ceiling & floor &

High static duct unit

Troubleshooting

For Duct type

Outdoor Units 105

Troubleshooting MLCAC-UTSM-2010-10

106 Outdoor Units

MLCAC-UTSM-2010-10

1. Operation lamp flashes

Operation lamp flashes at 5Hz

Judge 1: Indoor temp. sensor is abnormal

Check whether the resistance of the evaporator temp. sensor is correct according to Annex 1

Yes

Judge 2: Room temp. sensor is abnormal

Check whether the resistance of the room temp. sensor is correct according to Annex 1

Yes

No

No

Replace indoor PCB

Troubleshooting

Replace evaporator temp. sensor

Replace room temp. sensor

Outdoor Units 107

Troubleshooting

2. Timer lamp flashes

Timer lamp flashes at 5Hz

Judge: Indoor/outdoor unit communication is abnormal

Refer to the outdoor unit LED display E2 malfunction in the following part

3. Alarm lamp slow-flash

Indoor alarm lamps flash at 1Hz

Condenser temp. sensor or outdoor unit is malfunction

Judge 1: Condenser temp. sensor is abnormal

Check whether the resistance of the condenser temp. sensor is correct according to Annex 1

Yes

Judge 2: Outdoor unit is abnormal

No

MLCAC-UTSM-2010-10

Replace condenser temp. sensor

Refer to the outdoor unit LED display E4、P1、P2 malfunction in the following part

108 Outdoor Units

MLCAC-UTSM-2010-10

4. Alarm lamp quick-flash

Alarm lamp flashes at 5Hz

Judge: Water level switch is abnormal.

Check whether the water pump can work normally

Yes

No

Select the cooling mode to make water pump work for a few minutes, then check whether the system can run normally

Yes

Replace water pump

Troubleshooting

Trouble is solved

No

Check whether the water drain pipe is blocked

No

Replace indoor PCB

5. Defrost lamp flashes

Defrost lamp flashes

Yes

Solve to make the water can flow fluently

Judge: Mode conflicts malfunction

Turn the indoor unit to heating mode or turn off the unit

Outdoor Units 109

Troubleshooting

9.2 Outdoor unit malfunction

Display

E0

E2

E3

E4

Malfunction or Protection

EEPROM malfunction

Communication malfunction between indoor IC and outdoor IC

Communication malfunction in outdoor IC and DSP

Malfunction of outdoor temperature sensor

MLCAC-UTSM-2010-10

P2

P3

P4

P5

E5

E6

P0

P1

Voltage protection of compressor

PFC module protection (Only for 30K, 36K & 48K with 1 phase)

Top temperature protection of compressor

High pressure protection

Low pressure protection

Current protection of compressor

Discharge temperature protection of compressor

High temperature protection of condenser

P6 Module protection

1. E0 malfunction

E0 display

EEPROM malfunction

Judge: Check whether the EEPROM is inserted well

Yes

Replace outdoor main board

No

Insert the EEPROM well

110 Outdoor Units

MLCAC-UTSM-2010-10


E2 display

Communication malfunction between indoor IC and outdoor IC

Judge 1: Check whether the indoor unit power is on

Yes

Judge 2: Check whether the signal wiring is shield cable or whether the shield cable is earthed

Yes

No

Judge 3: Check whether the signal wiring between the indoor and outdoor units is wrong polarity?

Judge 4: Check whether the signal wiring between the indoor and outdoor units is broken?

No

No

Yes

Yes

Troubleshooting

Turn on the indoor unit power

Adopt the shield cable/ let shield cable earthed

Connect the signal wiring correctly

Replace the broken wiring

No

Indoor or outdoor main board is broken. Replace the main board until the malfunction disappears.

Outdoor Units 111


3. E3 malfunction (For 18K & 24K & 30K)

E3 display


Check whether the indicator lights LED1 on the main board is flashing

No

Check whether the connecting wiring between the IPM module and the CN4 on the main board is broken off

No

Disconnect the connecting wiring between the IPM module and the CN4 on the main board, use the multimeter to measure the voltage between the IPM module

CN1 port’s 3 and 4 pillar, check whether it is 5V, (the third pillar on the main board labels +5V)

No

Yes

Check whether the connecting wiring between the IPM module positive pole and the CN12 on the power board is broken off

No

Yes

Yes

Yes

Replace the outdoor main board

Insert the connecting wiring well over again



Check whether the connecting wiring between the IPM module negative pole and the CN13 on the power board is broken off

Yes


No

Use the multimeter to measure whether the voltage between the CN12 and the CN13 on the power board is between +（277V~345）V

No

Yes

Replace the IPM module

Replace the power board

112 Outdoor Units

MLCAC-UTSM-2010-10

4. E3 malfunction (For 36K & 48K & 60K)

E3 display


Check whether the indicator lights LED1 or LED2 on the main control board are flashing

No

Install the IC-U3 chip of the PCB over again, check whether the system can run normally

No

Check whether the output of the transformer to CN4 socket is well

No

Replace the transformer

Yes

Yes

Yes

Troubleshooting

Replace PCB

Trouble is solved

Replace PCB

Outdoor Units 113



E4 display

Judge 1: Outdoor condenser temp. sensor (T3) is malfunction

Check whether the wiring of the condenser temp. sensor is broken off

No

Check whether the resistance of condenser temp. sensor is wrong refer to the Annex 1

Check whether the wiring of the outdoor ambient temperature sensor (T4) is broken off

No

Judge 2: Outdoor ambient temp. sensor (T4) is malfunction

No

Check whether the resistance of outdoor ambient temperature sensor

(T4) is wrong refer to the Annex 1

No

Yes

Yes

Yes

Yes

Connect the wiring well

Replace condenser temp. sensor

Connect the wiring well

Replace outdoor ambient temperature sensor

(T4)

Replace PCB

114 Outdoor Units

MLCAC-UTSM-2010-10 Troubleshooting


E5 display

Voltage protection of compressor

Check the voltage of outdoor unit power supply, whether the voltage between L(1) and N is about 172-265V

Yes

Replace the power board, then check whether the system can run normally

No

Yes

Check the power supply

No


7. E6 malfunction (Only for 30K, 36K & 48K with 1 phase)

E6 display

PFC module protection

Check whether the connecting line between main board and the PFC module is connected tightly

Yes

Check whether the voltage between P and N of IPM module is 380-390V

No

Replace the PFC module

Yes

No

No

Trouble is solved

Connect it tightly, check normal or not

Replace the outdoor main board

Outdoor Units 115


8. P1 malfunction

P1 display

High pressure protection

Judge 1: Whether the wiring between the high pressure switch and main control board is connected well or correctly

Yes

Judge 2: Whether the high pressure switch is broken

Method: Short connect the high pressure switch socket, check whether the system can run normally

No

Check whether the refrigerant system is ok

Yes

Judge 3: Check whether the outdoor ambient temperature is too high

No

Judge 4: Check whether the outdoor unit is bad ventilation

No

Yes

Yes

No

Replace high pressure switch

Yes

Connect it well

Stop the unit

Make the outdoor unit ventilate well

Judge 5: Check whether the heat exchanger is dirty

Clean the heat exchanger

No

Judge 6: Check whether the refrigerant pipe is blocked

Yes

Let the refrigerant out, then use the high pressure nitrogen or refrigerant to blow pipe, vacuumize and charge the refrigerant again

No


116 Outdoor Units

MLCAC-UTSM-2010-10


P2 display

Low pressure protection

Judge 1: The wiring between the low pressure switch and main control board is connected well or correctly

Judge 2: Whether the low pressure switch is broken

Method: Short connect the low pressure switch socket, check whether the system can run normally

No

Yes

Yes


Judge 3: Check whether the outdoor ambient temperature is too low

No

Judge 4: The refrigerant of the system is leakage

Method: Connect the pressure gauge to the gauge joint of the system, check whether the pressure is lower than 0.14MPa

Yes

No

Replace low pressure switch

Yes

Stop the unit

Troubleshooting

Connect it well

Leak hunting: Charge nitrogen or refrigerant to the system, if the leakage is serious, there will be distinct gas leakage “cici” sound; if the leakage is slight, use the suds (mixture of water and abluent is also ok if it can make bubble) or electronic leak detector.

No

Yes

Judge 5: The refrigerant pipe is blocked


No


Outdoor Units 117



P3 display

Current protection of compressor

Judge 1: Check whether the input current of the power supply wire is more than 20A (For 36K & 48K with 1 phase, it is 30A)

Yes


Judge 2: Check whether the outdoor ambient temperature is too high

No

Judge 3: Check whether the outdoor unit is bad ventilation

No


No


No

Yes

Yes

Yes

Yes

Stop the unit

Make the outdoor unit ventilate well




118 Outdoor Units



When compressor discharge temperature is higher than 115°C, the unit will stop, and unit runs again when compressor discharge temperature is lower than 90°C.

P4 display

Discharge temperature protection of compressor

Yes

Check whether the compressor discharge temp. is more than 115°C ?

No

Check whether the wiring connection is right

No between compressor discharge temp. sensor and

PCB according to wiring diagrams

Yes

Judge: The discharge temp. sensor is broken

Correct the wiring connection

Check whether the refrigerant is leak

Yes

Stop leaking and add refrigerant

Method: Check whether the resistance of compressor discharge temp. sensor is right refer to the Annex 2

No

Replace the compressor discharge temp. sensor

Yes


Outdoor Units 119



When condenser high temp. is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52°C.

P5 display

High temperature protection of condenser

Check whether the condenser temperature is more than 65°C

No

Check whether the resistance of condenser temp. sensor is correct refer to the Annex 1

No

Yes


Yes

Stop the unit


Yes

Yes

Replace the temperature sensor

Judge1: The outdoor temp. is too high

No


No


Yes


No


120 Outdoor Units


13. P6 malfunction (For single phase units)

P6 display

Module protection

Check whether the voltage range of P-N on

IPM module is normal? DC277-356V for

18K/24K/30KBtu/h; DC277-410V for

36K/48KBtu/h

No

Check whether the input power supply is correct? 220-240V, 1N, 50Hz

Yes

Check whether the connecting line between main board and the IPM module is connected tightly

No

Connect it tightly, check ok or not?

Yes

Check whether the power supply line is connected correctly and tightly

No

No

Regulate it to correct, then check whether the system can work normally?

Connect it correctly and tightly, check ok or not?

Yes No Yes

Check whether the connecting line of the compressor is connected correctly or tightly

No

No

Connect it well, check ok or not?

Check whether the lines in

E-part box are connected tightly

Yes

Yes

Replace the IPM module, check

Yes

Check whether the single-phase bridge is normal? Use the multimeter to measure the resistance between each two terminals, check whether there is the condition that value of resistance is 0 whether the system can work normally?

No

Replace the main board, check whether the system can work normally?

Trouble is solved

Yes

Trouble is solved

No

Check whether the connecting line of every reactor is normal? If the line is broken, the resistance of the two ports is ∞

No

Yes

No

No

No

No


No

Replace the single-phase bridge

Replace the connecting line

Replace the compressor, check whether the system can work normally?

Yes

Trouble is solved

Yes

Check whether the fuse on the power board is normal?

No

Replace with the same model fuse

Yes

Replace the power board

Outdoor Units 121


14. P6 malfunction (For three phases units)

P6 display

Module protection

Check whether the voltage range of P-N on

IPM module is normal? DC 350-650V

Yes

No

Check whether the input power supply is correct? 380-415V, 3N, 50Hz

Yes

Check whether the connecting line between main board and the IPM module is connected tightly


Check whether the power supply line is connected correctly and tightly

No

No

Regulate it to correct, then check whether the system can work normally?

No

Connect it correctly and tightly, check ok or not?

Yes

Check whether the connecting line of the compressor is connected tightly

Yes

Replace the IPM module, check whether the system can work normally?

No


No

Yes

No

Replace the main board, check whether the system can work normally?

No

Yes

Yes

Check whether the lines in

E-part box are connected tightly

Yes

Check whether the three phase bridge is normal?

Trouble is solved

Yes

Check whether the 3300µF/400V electrolytic capacitor is normal?

Trouble is solved

No

No

Yes

No

Replace the compressor , check whether the system can work normally?

Trouble is solved

No


No

Replace the three phase bridge

Replace this electrolytic capacitor

122 Outdoor Units

MLCAC-UTSM-2010-10

Appendix Indoor Temp. and Pipe Temp. Sensor Resistance Value Table (℃--K)

℃

K Ohm

℃

K Ohm

℃

K Ohm

℃

-20 115.266 20 12.6431 60 2.35774 100

46.5725

44.0000

41.5878

39.8239

37.1988

35.2024

33.3269

31.5635

29.9058

28.3459

26.8778

25.4954

24.1932

108.146

101.517

96.3423

89.5865

84.2190

79.3110

74.5360

70.1698

66.0898

62.2756

58.7079

56.3694

52.2438

49.3161

22.5662

21.8094

20.7184

19.6891

18.7177

17.8005

16.9341

16.1156

15.3418

14.6181

13.9180

13.2631

42

43

44

45

46

47

35

36

37

38

39

40

41

28

29

30

31

32

33

34

21

22

23

24

25

26

27

55

56

57

58

59

48

49

50

51

52

53

54

5

6

7

2

3

4

-1

0

1

-5

-4

-3

-2

-12

-11

-10

-9

-8

-7

-6

-19

-18

-17

-16

-15

-14

-13

15

16

17

18

19

8

9

10

11

12

13

14

6.40021

6.13059

5.87359

5.62961

5.39689

5.17519

4.96392

4.76253

4.57050

4.38736

4.21263

4.04589

3.88673

12.0561

11.5000

10.9731

10.4736

10.000

9.55074

9.12445

8.71983

8.33566

7.97078

7.62411

7.29464

6.98142

6.68355

3.73476

3.58962

3.45097

3.31847

3.19183

3.07075

2.95896

2.84421

2.73823

2.63682

2.53973

2.44677

82

83

84

85

86

87

75

76

77

78

79

80

81

68

69

70

71

72

73

74

61

62

63

64

65

66

67

95

96

97

98

99

88

89

90

91

92

93

94

1.38703

1.34105

1.29078

1.25423

1.21330

1.17393

1.13604

1.09958

1.06448

1.03069

0.99815

0.96681

0.93662

2.27249

2.19073

2.11241

2.03732

1.96532

1.89627

1.83003

1.76647

1.70547

1.64691

1.59068

1.53668

1.48481

1.43498

0.90753

0.87950

0.85248

0.82643

0.80132

0.77709

0.75373

0.73119

0.70944

0.68844

0.66818

0.64862

122

123

124

125

126

127

115

116

117

118

119

120

121

108

109

110

111

112

113

114

101

102

103

104

105

106

107

135

136

137

138

139

128

129

130

131

132

133

134

Troubleshooting

0.3413

0.33246

0.32390

0.31559

0.30754

0.29974

0.29216

0.28482

0.27770

0.27078

0.26408

0.25757

0.25125

0.24512

0.23916

0.23338

0.22776

0.22231

0.49989

0.48600

0.47256

0.45957

0.44699

0.43482

0.42304

0.41164

0.40060

0.38991

0.37956

0.36954

0.35982

0.35042

K Ohm

0.62973

0.61148

0.59386

0.57683

0.56038

0.54448

0.52912

0.51426

Outdoor Units 123

Installation MLCAC-UTSM-2010-10

Part 4

Installation

1.Precaution on Installation ................................................ 125

2.Vacuum Dry and Leakage Checking ............................... 126

3.Additional Refrigerant Charge ......................................... 128

4.Water Drainage ............................................................... 129

5.Insulation Work ............................................................... 132

6.Wiring .............................................................................. 133

7.Test Operation ................................................................ 134

124 Installation

MLCAC-UTSM-2010-10 Precaution on Installation

1. Precaution on Installation

1). Measure the necessary length of the connecting pipe, and make it by the following way. a. Connect the indoor unit at first, then the outdoor unit.

Bend the tubing in proper way. Do not harm them.

Specially Notice the pipe length/height/dimension of each capacity.

Maximum pipe length

12,000Btu/h

36,000Btu/h

Model

18,000Btu/h ~24,000Btu/h

30,000Btu/h

Max. Length

10m

25m

25m

30m

Max. Elevation

5m

12m

15m

20m

48,000Btu/h~60,000Btu/h

Piping sizes

Model

12,000Btu/h~18,000Btu/h

50m

Liquid(mm)

6.4

25m

Gas(mm)

12.7

24,000Btu/h~60,000Btu/h

CAUTIONS

9.5 15.9



Daub the surfaces of the flare pipe and the joint nuts with frozen oil, and wrench it for 3~4 rounds



With hands before fasten the flare nuts.



Be sure to use two wrenches simultaneously when you connect or disconnect the pipes.

Pipe gauge Tightening torque

Flare dimension A

Min (mm) Max

Φ6.4

14.2～17.2N.m

(144～176 kgf.cm)

8.3 8.7

Flare shape

Φ9.5

Φ12.7

32.7～39.9N.m

(333～407kgf.cm)

49.5～60.3N.m

(504～616kgf.cm)

12.0

15.4

12.4

15.8

Φ15.9

61.8～75.4N.m

(630～770 kgf.cm)

18.6 19.1

Φ19.1

97.2～118.6N.m

(990～1210kgf.cm)

22.9 23.3 b. The stop value of the outdoor unit should be closed absolutely (as original state). Every time you connect it, first loosen the nuts at the part of stop value, then connect the flare pipe immediately (in 5 minutes). If the nuts have been loosened for a long time, dusts and other impurities may enter the pipe system and may cause malfunction later. So please expel the air out of the pipe with refrigerant before connection. c. Expel the air after connecting the refrigerant pipe with the indoor unit and the outdoor unit. Then fasten the nuts at the repair-points.

2) Locate The Pipe a. Drill a hole in the wall (suitable just for the size of the wall conduit), then set on the fittings such as the wall conduit and its cover. b. Bind the connecting pipe and the cables together tightly with binding tapes. Do not let air in, which will cause water leakage by condensation. c. Pass the bound connecting pipe through the wall conduit from outside. Be careful of the pipe allocation to do no damage to the tubing.

3) Connect the pipes.

4) Then, open the stem of stop values of the outdoor unit to make the refrigerant pipe connecting the indoor unit with the outdoor unit in fluent flow.

5) Be sure of no leakage by checking it with leak detector or soap water.

6) Cover the joint of the connecting pipe to the indoor unit with the soundproof / insulating sheath (fittings), and bind it well with the tapes to prevent leakage.

Installation 125

Vacuum Dry and Leakage Checking MLCAC-UTSM-2010-10

2. Vacuum Dry and Leakage Checking

1) Vacuum Dry: use vacuum pump to change the moisture (liquid) into steam (gas) in the pipe and discharge it out of the pipe to make the pipe dry. Under one atmospheric pressure, the boiling point of water(steam temperature) is 100

℃. Use vacu pressure in the pipe near vacuum state, the boiling point of water falls relatively. When it falls under outdoor temperature, the moisture in the pipe will be vaporized.

Necessary vacuum degree

2) Vacuum dry procedure

There are two methods of vacuum dry due to different construction environment: common vacuum dry, special vacuum dry.

①. Common vacuum dry procedure

 Vacuum dry (for the first time)---connect the all-purpose detector to the inlet of liquid pipe and gas pipe, and run the vacuum pump more than two hours (the vacuum pump should be below -755mmHg)

 If the pump can’t achieve below -755mmHg after pumping 2 hours, moisture or leakage point will still exist in the pipe. At this time, it should be pumped 1 hour more.

 If the pump can’t achieve -755mmHg after pumping 3 hours, please check if there are some leakage points.

 Vacuum placement test: place 1 hour when it achieves -755mmHg, pass if the vacuum watch shows no rising. If it rises, it shows there’s moisture or leakage point.

 Vacuuming from liquid pipe and gas pipe at the same time.

 Sketch map of common vacuum dry procedure.

126 Installation

MLCAC-UTSM-2010-10 Vacuum Dry and Leakage Checking

②. Special vacuum dry procedure

 This vacuum dry method is used in the following conditions:

 There’s moisture when flushing the refrigerant pipe.

 Rainwater may enter into the pipe.

 Vacuum dry for the first time ······ 2h pumping

③. Vacuum destroy for the second time ······ Fill nitrogen to 0.5Kgf/cm

2

Because nitrogen is for drying gas, it has vacuum drying effect during vacuum destroy. But if the moisture is too much, this method can’t dry thoroughly. So, please pay more attention to prevent water entering and forming condensation water.

④. Vacuum dry for the second time······1h pumping

Determinant: Pass if achieving below -755mmHg. If -755mmHg can’t be achieved in 2h, repeat procedure

③ and

④.

⑤. Vacuum placing test ······ 1h

⑥. Sketch map of special vacuum dry procedure

Installation 127

Additional Refrigerant Charge MLCAC-UTSM-2010-10

3. Additional Refrigerant Charge

Caution

a) Refrigerant cannot be charged until field wiring has been completed.

b) Refrigerant may only be charged after performing the leak test and the vacuum pumping. c) When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of the danger of liquid hammer. d) Charging with an unsuitable substance may cause explosions and accidents, so always ensure that the appropriate refrigerant is charged. e) Refrigerant containers shall be opened slowly. f) Always use protective gloves and protect your eyes when charging refrigerant.

The outdoor unit is factory charged with refrigerant. Calculate the added refrigerant according to the diameter and the length of the liquid side pipe of the outdoor unit/indoor unit.

R(g) D(mm)

L(m)

φ6.4 Φ9.5 Φ12.7

— — — Less than 5m (One-way)

Added Refrigerant When

Over 5m(One-way)

11g/m×(L-5) 30g/m×(L-5) 60g/m×(L-5)

Remark:

R (g): Additional refrigerant to be charged

L (m): The length of the refrigerant pipe (one-way)

D (mm): Liquid side piping diameter

128 Installation

MLCAC-UTSM-2010-10 Water Drainage

4. Water Drainage

4.1 Gradient and Supporting

1). Keep the drainpipe sloping downwards at a gradient of at least 1/50. Keep the drainpipe as short as possible and eliminate the air bubble.

2). The horizontal drainpipe should be short. When the pipe is too long, a prop stand must be installed to keep the gradient of 1/50 and prevent bending. Refer to the following table for the specification of the prop stand.

Hard PVC pipe

Diameter

25~40mm

Distance between the prop stands

1.5~2m

3). Precautions

① The diam eter of drainpipe should m eet the drainage requirem ent at least.

② the drainpipe should be heat-insulated to prevent atomization.

③ Drainpipe should be installed before installing indoor unit. After powering on, there is som e water in water-receiver plate. Please check if the drain pump can operate correctly.

④ All connection should be firm .

⑤ W ipe color on PVC pipe to note connection.

⑥ Clim bing, horizontal and bending conditions are prohibited.

⑦ The dimension of drainpipe can’t less than the connecting dimension of indoor drainpipe.

⑧ Heat-insulation should be done well to prevent condensation.

⑨ Indoor units with different drainage type can’t share one convergent drainpipe.

4.2 Drainpipe Trap

1). If the pressure at the connection of the drainpipe is negative, it needs to design drainpipe trap.

2). Every indoor unit needs one drainpipe trap.

3). A plug should be designed to do cleaning.

4.3 Upwards drainage (drain pump)

For Four-way cassette(compact)

Plug

Installation 129

Water Drainage

For Four-way cassette

MLCAC-UTSM-2010-10

4.4 Convergent drainage

1). The number of indoor units should be as small as possible to prevent the traverse main pipe overlong.

2). Indoor unit with drain pump and indoor unit without drain pump should be in different drainage system.

3). Selecting the diameter

Number of connecting indoor units

→ Calculate drainage volume → Select the diameter

Calculate allowed volume =Total cooling capacity of indoor units (HP)×2 (l/ hr)

Hard PVC

Hard PVC

Hard PVC

Hard PVC

Hard PVC

Allowed volume(lean 1/50) (l/ hr)

∽≤ 14

14＜∽≤ 88

88＜∽≤ 334

175＜∽≤ 334

334＜∽

I.D. (mm)

￠25

￠30

￠40

￠50

￠80

Thick

3.0

3.5

4.0

4.5

6.0

4.5 Drainage test

1). Drainage without drain pump

After finishing drainpipe installation, pour some water into the water receiver plate to check if the water flows smoothly.

2). Drainage with drain pump

① Poke the W ater Level Switch, remove the cover, use water pipe to pour 2000ml water into the water receipt plate through the water inlet.

130

② Turn on the power to Cooling operation. Check the pump’s operation and switch on the Water Level Switch. Check the pump’s sound and look into the transparent hard pipe in the outlet at the same time to check if the water can discharge normally.

Installation

MLCAC-UTSM-2010-10 Water Drainage

③ Stop the air conditioner running, turn off the power, and put back the cover.

 Stop the air conditioner. After 3 minutes, check if it has abnormity. If the collocation of drainpipes is illogical, the water will flow back overfull, which will cause the alarm lamp flashes, even overflow from the water receipt plate.

 Keep on pouring water until it gives an alarm signal for high water level, check if the pump drains water at once. If the water level can’t fall below the alarmed water level after 3 minutes, the air conditioner will stop. Turn off the power and drain the remained water, and then turn on the air conditioner.

Note: the drain stuff in the main water receipt plate is for maintenance. Stuff up the drain stuff to prevent water leakage.

Installation 131

132

Insulation Work MLCAC-UTSM-2010-10

5. Insulation Work

5.1 Insulation material and thickness

1). Insulation material

Insulation material should adopt the material which is able to endure the pipe’s temperature: no less than 70 less than 120

Example: Heat pump type----Heat-resistant Polyethylene foam (withstand above 120

℃)

Cooling only type---- Polyethylene foam (withstand above 100

℃)

2). Thickness choice for insulation material

Insulation material thickness is as follows:

Refrigerant pipe

Drainage pipe

Pipe diameter (mm)

Φ6.4—Φ25.4

Φ28.6—Φ38.1

Inner diameter

Φ20—Φ32

Adiabatic material thickness

10mm

15mm

6mm

5.2 Refrigerant pipe insulation

1). Work Procedure

① Before laying the pipes, the non-jointing parts and non-connection parts should be heat insulated.

② W hen the gas proof test is eligible, the jointing area, expanding area and the flange area should be heat insulated

2). Insulation for non-jointing parts and non-connection parts wrong right

Gas pipe and liquid pipe should not be put together to insulate

Insulate the gas pipe

(cooling only)

Insulate the gas pipe and liquid pipe

Installation

MLCAC-UTSM-2010-10 Insulation Work

For construction convenience, before laying pipes, use insulation material to insulate the pipes to be deal with, at the same time, at two ends of the pipe, remain some length not to be insulated, in order to be welded and check the leakage after laying the pipes.

3). Insulate for the jointing area, expanding area and the flange area

① Insulate for the jointing area, expanding area and the flange area should be done after checking leakage of the pipes

② Make sure there’s no clearance in the joining part of the accessorial insulation m aterial and local preparative insulation material.

5.3 Drainage pipe insulation

1) The connection part should be insulated, or else water will be condensing at the non-insulation part.

5.4 Note

1) The jointing area, expanding area and the flange area should be heat insulated after passing the pressure test

2) The gas and liquid pipe should be heat insulated individually, the connecting part should be heat insulated individually.

3) Use the attached heat-insulation material to insulate the pipe connections (pipes’ tie-in ,expand nut ) of the indoor unit.

6. Wiring

Please refer to the Wiring Diagram.

Installation 133

Test Operation MLCAC-UTSM-2010-10

7. Test Operation

(1) The test operation must be carried out after the entire installation has been completed.

(2) Please confirm the following points before the test operation.

 The indoor unit and outdoor unit are installed properly.

 Tubing and wiring are correctly completed.

 The refrigerant pipe system is leakage-checked.

 The drainage is unimpeded.

 The ground wiring is connected correctly.

 The length of the tubing and the added stow capacity of the refrigerant have been recorded.

 The power voltage fits the rated voltage of the air conditioner.

 There is no obstacle at the outlet and inlet of the outdoor and indoor units.

 The gas-side and liquid-side stop values are both opened.

 The air conditioner is pre-heated by turning on the power.

(3) According to the user's requirement, install the remote controller when the remote controller's

signal can reach the indoor unit smoothly.

(4) Test operation

Set the air conditioner under the mode of "COOLING" with the remote controller, and check the following points.

Indoor unit

 Whether the switch on the remote controller works well.

 Whether the buttons on the remote controller works well.

 Whether the air flow louver moves normally.

 Whether the room temperature is adjusted well.

 Whether the indicator lights normally.

 Whether the temporary buttons works well.

 Whether the drainage is normal.

 Whether there is vibration or abnormal noise during operation.

Outdoor unit

 Whether there is vibration or abnormal noise during operation.

 Whether the generated wind, noise, or condensed of by the air conditioner have influenced your neighborhood.

 Whether any of the refrigerant is leaked.

134 Installation

MLCAC-UTSM-2010-10 Control

Part 5

Control

1. Wireless Remote Controller ........................................... 136

Control 135

Wireless Remote Controller

1. Wireless Remote Controller

1.1 R11-HG/E

Mode select button

Each time you push the button, a mode is selected in a sequence that goes from AUTO,

COOL, DRY, HEAT

(cooling only type without), FAN ONLY and back to AUTO.

MLCAC-UTSM-2010-10

I/O Button

Push the button to start operation, push the button again to stop operation.

Fan button

This button is used for selecting fan speed.

Each time you push the button, a fan speed is selected in a sequence that goes from AUTO,

LOW, MED(Some models without, HIGH, and back to

AUTO.

After Sliding the cover, the button and function are as follows:

Temperature Button

Auto louver button

Push this button to swing louver. Push the button again to stop.

Timer button

Push ON-TIME timer button to set the ON timer.

Push OFF-TIME timer button to set the OFF timer.

Confirmation button

Push this button to confirm

ON and OFF timer settings.

FAN

This button is used for setting the current time and OFF time.

Adjust forwards

Adjust backwords

Clock button

Push this button to set time.

Lock button

When you push the LOCK button, all current settings are locked in and the remote controller does not accept any operation except that of the LOCK button. Use the lock mode when you want to prevent setting from being changed accidentally or play fully. Push the LOCK button again when you want to cancel the LOCK mode.

136

Push this button to cancel

ON timer and OFF timer.

RESET button

When you push the RESET button, all current settings are cancelled and get into the condition of beginning.

In the clock, the colon in

"0:00" will flash, the mode displays "AUTO", fan speed displays "AUTO", the temperature displays "24".

Control

MLCAC-UTSM-2010-10 Wireless Remote Controller

1.2 R05/BGE

The R05/BGE wireless remote controller is for Four-way cassette type and the Ceiling& floor type.

Mo de s etting

Ad jus t

3

ON/OF F

5

Hor iz swin g

7

Vert. swing

8

Reset

12

Loc k

13

Co ol /h eat 15

2

Fan s peed se ttin g

4

Adj us t

MOD E

M

FAN

S P EED

SWIN G

AIR DIRE CTI ON

C LOC K

SW IN G

O K

TIME ON

EC O TI ME OF F

6

Air direction setting

9

Tim e settin g

10

T ime ON

11

Ti me OFF

14

Confirm b utton

1 6

Economic operation

1.3 General Function for wireless remote controller:

Model and Specification

Model

Rated voltage

Min voltage for sending signal of CPU

Effective receiving distance

Operation condition

R05/BGE

3.0V(2pieces of LR03 7＃ batteries)

2.4V

8m~11m

-5~60℃

Control 137

Wireless Remote Controller

Buttons and functions

MLCAC-UTSM-2010-10

1. MODE: Once pressing, running mode will be selected in the following sequence:

AUTO COOL DRY HEAT FAN

NOTE: No heating mode for cool only type unit.

2. FAN SPEED: Fan speed will be selected in following sequence once pressing this button:

AUTO LOW MED HIGH

3. Adjust

: Decrease the set temp. Keeping pressing will decrease the temp with 1 ℃

4. Adjust

: Increase the set temp. Keeping pressing will increase the temp with 1

℃ per 0.5s.

5. ON/OFF: For turning on or turning off the air conditioner.

6. AIR DIRECTION: Activate swing function of air deflector. Once pressing, air deflector will turn 6°. For normal operation and better cooling and heating effect, deflector will not turn to the degree which is the state of deflector when the unit is turned off.( Only available when remote controller is used with corresponding unit.)

7. HORIZ SWING: Activate or turn off horizontal swing function. (Only available when remote controller is used with corresponding unit, i.e. Ceiling & floor type)

8. VERT SWING: Activate or turn off vertical swing function.

(Only available when remote controller is used with corresponding unit.)

9. CLOCK: Display the current time. (12:00 is displayed when resetting or electrifying for the first time.)

Press CLOCK for 5s, icon indicating hour will flash with 0.5s. Press it again; icon indicating minute will flash with 0.5s. and are used to adjust the figure. Setting or modification is effective only by pressing OK button to make confirmation.

10. TIME ON: For time ON setting. Once pressing this button, the time will increase by 0.5 hour. When the set time exceeds 10 hours, pressing the button will increase the time by 1 hour. Adjusting the figure to 0.00 will cancel time ON setting.

11. TIME OFF: For time OFF setting. Once pressing this button, the time will increase by 0.5 hour. When the set time exceeds 10 hours, pressing the button will increase the time by 1 hour.

Adjust the figure to 0.00 will cancel time ON setting.

12. RESET (inner located): Press this button with a needle of 1mm to cancel the current setting and reset remote controller.

13. LOCK (inner located): Press this button with a needle of 1mm to lock or unlock the current setting.

14. OK: Used to confirm the time setting and modification.

15. COOL/HEAT (inner located): Press this button with a needle of 1mm to shift mode between COOL only and COOL&HEAT. During setting, background light will be lightened. Factory default mode is COOL

&HEAT.

16. ECO: Activate or turn off economic operation mode. It is suggested to turn on this function when sleeping.

(Only available when remote controller is used with corresponding unit.)

138 Control

MLCAC-UTSM-2010-10 Wireless Remote Controller

1.3 R51/CE

The R51/CE wireless remote controller is only for MCA1-18CR.

Remote Controller Specifications

Model

Rated Voltage

Lowest Voltage of CPU Emitting Signal

Reaching Distance

Environment Temperature Range

R51/CE

3.0V

2.0V

8m (when using 3.0 voltage, it can get 11m)

Introduction of Function Buttons on the Remote Controller

1. TEMP DOWN Button: Push the TEMP DOWN button to decrease the indoor temperature setting or to adjust the timer in a counter-clockwise direction.

2. MODLE SELECT Button: Each time you push the button, a mode is selected in a sequence that goes from AUTO, COOL, DRY, HEAT and FAN as the following figure indicates:

3. SWING Button: Push this switch button to change the louver angle.

4. RESET Button: When the RESET button is pushed, all of the current settings are cancelled and the control will return to the initial settings.

5. ECONOMIC RUNNING Button: Push this button to go into the Energy-Saving operation mode.

6. LOCK Button: Push this button to lock in all the current settings. To release settings, push again.

7. CANCEL Button: Push this button to cancel the TIMER settings.

8. TIMER Button: This button is used to preset the time ON (start to operate) and the time OFF (turn off the operation)

9. ON/OFF Button: Push this button to start the unit operation. Push the button again to stop the unit operation.

Control 139

Wireless Remote Controller MLCAC-UTSM-2010-10

10. FAN SPEED Button: This button is used for setting fan speed in the sequence that goes from AUTO,

LOW, MED to HIGH, and then back to Auto.

11. TEMP UP Button: Push this button to increase the indoor temperature setting or to adjust the timer in a counter-clockwise direction.

12. VENT Button: Push this button to set the ventilating mode. The ventilating mode will operate in the following sequence:

140 Control

Service Manual

Service Manual

Part 1

General Information

Part 2

Indoor Units

New Four-way Cassette Type (Compact)

Temperature

Four-way Cassette Type

Airflow velocity

Duct Type

All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:

Discharge

Suction

1.4m

Microphone

Ceiling & Floor Type

Airflow velocity

Console Type

MAIN CONTROL BOARD

WIRING DIAGRAM

INDOOR UNIT

202044190037

Part 3

Outdoor Units

Heating

Heating

Part 4

Installation

Part 5

Control

Related manuals

Table of contents

Service Manual

Service Manual

Part 1

General Information

Part 2

Indoor Units

New Four-way Cassette Type (Compact)

Temperature

Four-way Cassette Type

Airflow velocity

Duct Type

All the indoor units reserve the hole to joint the fresh air pipe. The hole size as following:

Discharge

Suction

1.4m

Microphone

Ceiling & Floor Type

Airflow velocity

Console Type

MAIN CONTROL BOARD

WIRING DIAGRAM

INDOOR UNIT

202044190037

Part 3

Outdoor Units

Heating

Heating

Part 4

Installation

Part 5

Control

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Table of contents