
MCAC-HTSM-2007-11 Contents
Contents i
Part 1 General Information ..................................................................................................... 1
Part 2 Indoor Units ................................................................................................................ 11
Part 3 Outdoor Units ............................................................................................................. 86
Part 4 Installation ................................................................................................................ 126
Part 5 Control System ........................................................................................................ 139

MCAC-HTSM-2007-11 General Information
General Information 1
Part 1
General Information
1. Model Names of Indoor/Outdoor Units ...................... 2
2. External Appearance .................................................. 5
3. Combination of Indoor Units...................................... 7
4. Nomenclature ............................................................. 8
5. Features .................................................................... 10

Model Names of Indoor/Outdoor Units MCAC-HTSM-2007-11
2 General Information
1. Model Names of Indoor/Outdoor Units
1.1 Indoor Units
Model name
Dimension
(mm)
Net/Gross
weight (kg)
Power supply
MSCI-07HRIN1
Width: 745
Height: 200
Depth: 220
8/9.5 220~240V-1ph-50Hz
MSCI-09HRIN1
Width: 745
Height: 200
Depth: 220
8/9.5 220~240V-1ph-50Hz
MSCI-12HRIN1
Width: 820
Height: 215
Depth: 255
9/11 220~240V-1ph-50Hz
MSHI-07HRIN1
Width: 775
Height: 215
Depth: 216
8/10 220~240V-1ph-50Hz
MSHI-09HRIN1
Width: 775
Height: 215
Depth: 216
8.5/10 220~240V-1ph-50Hz
MSHI-12HRIN1
Width: 860
Height: 220
Depth: 240
10/12 220~240V-1ph-50Hz
MSV1I-09HRDN1
Width: 795
Height: 270
Depth: 165
10/11.5 220~240V-1ph-50Hz
MSV1I-12HRDN1
Width: 845
Height: 286
Depth: 165
10.5/12 220~240V-1ph-50Hz
MST6I-07HRIN1
Width: 785
Height: 205
Depth: 220
8/10
220~240V-1ph-50Hz
MST6I-09HRIN1
Width: 785
Height: 205
Depth: 220
8/10
220~240V-1ph-50Hz
MST6I-12HRIN1
Width: 820
Height: 220
Depth: 225
9.5/11.5
220~240V-1ph-50Hz
MSQ4I-07HRDN1
Width: 580
Height: 254
Depth: 580
18.5/25 220~240V-1ph-50Hz
MSQ4I-09HRDN1
Width: 580
Height: 254
Depth: 580
18.5/25 220~240V-1ph-50Hz
MSQ4I-12HRDN1 Width: 580 18.5/25 220~240V-1ph-50Hz

MCAC-HTSM-2007-11 Model Names of Indoor/Outdoor Units
General Information 3
Model name
Dimension
(mm)
Net/Gross
weight (kg)
Power supply
Depth: 580
MSQ4I-18HRIN1
Width: 580
Height: 254
Depth: 580
21/28 220~240V-1ph-50Hz
MST2I-07HRIN1
Width: 874
Height: 203
Depth: 375
15/19 220~240V-1ph-50Hz
MST2I-09HRIN1
Width: 874
Height: 203
Depth: 375
15/19 220~240V-1ph-50Hz
MST2I-12HRIN1
Width: 874
Height: 203
Depth: 375
15/19 220~240V-1ph-50Hz
MST2I-18HRIN1
Width: 1224
Height: 206
Depth: 365
18/23 220~240V-1ph-50Hz
MSDLI-12HRIN1
Width: 990
Height: 660
Depth: 206
27/33 220~240V-1ph-50Hz
MSDLI-18HRIN1
Width: 990
Height: 660
Depth: 206
27/33 220~240V-1ph-50Hz
MSEI-07HRIN1
Width:710
Height:250
Depth:191
8/9.5 220~240V-1ph-50Hz
MSEI-09HRIN1
Width:710
Height:250
Depth:191
8/9.5 220~240V-1ph-50Hz
MSEI-12HRIN1
Width:790
Height:265
Depth:204
9.5/11.5 220~240V-1ph-50Hz

Model Names of Indoor/Outdoor Units MCAC-HTSM-2007-11
4 General Information
1.2 Outdoor Units
Model name
Dimension
(mm)
Net/Gross
weight (kg)
Power supply
M2OA-18HRDN1
Width: 940
Height: 375
Depth: 755
68/72 220~240V-1ph-50Hz
M2OB-18HRDN1
Width: 940
Height: 375
Depth: 755
61/65 220~240V-1ph-50Hz
M3OA-27HRDN1
Width: 940
Height: 375
Depth: 755
68/72 220~240V-1ph-50Hz
M4OA-27HRDN1
Width: 968
Height: 858
Depth: 355
80/84 220~240V-1ph-50Hz

MCAC-HTSM-2007-11 External Appearance
General Information 5
2. External Appearance
Indoor units:
Four-way cassette (compact)
Duct
Ceiling and floor
Wall-mounted Corona
Wall-mounted Alfa
Wall-mounted Vertu
Wall-mounted T6
Wall-mounted Elite

External Appearance MCAC-HTSM-2007-11
6 General Information
Outdoor units:
M2OA-18HRDN1/ M2OB-18HRDN1
M3OA-27HRDN1
M4OA-27HRDN1

MCAC-HTSM-2007-11 Combination of Indoor Units
General Information 7
3. Combination of Indoor Units
You can choose different style indoor units: cassette type, duct type, wall-mounted type, ceiling and
floor type.
3.1 M2OA-18HRDN1/M2OB-18HRDN1
Nominal Capacity
K Btu/h
One indoor unit two indoor units
3.2 M3OA-27HRDN1
Nominal Capacity
K Btu/h
one indoor unit two indoor units three indoor units
7 7+7 9+9 12+12 7+7+7 7+9+12
9 7+9 9+12 7+7+9 7+12+12
12 7+12 7+7+12 9+9+9
7+9+9 9+9+12
3.3 M4OA-27HRDN1
Nominal
Capacity
K Btu/h
one
unit
two indoor units three indoor units four indoor units
7 7+7 9+9 12+18 7+7+7 7+9+9 7+12+18 9+12+12 7+7+7+7 7+7+9+9 9+9+9+9
9 7+9 9+12 18+18 7+7+9 7+9+12 9+9+9 9+12+18 7+7+7+9 7+7+9+12 9+9+9+12
12 7+12 9+18 7+7+12 7+9+18 9+9+12 12+12+12 7+7+7+12 7+9+9+9 7+7+12+12
18 7+18 12+12 7+7+18 7+12+12 9+9+18 7+7+7+18 7+9+9+12 7+9+12+12

Nomenclature MCAC-HTSM-2007-11
8 General Information
4. Nomenclature
4.1 Indoor unit
M S C I - 07 H R I N1
Refrigerant
N1 R410A N2 R407C -- R22
AC Inverter
Control Mode
R Remote Control
Function Code
C Cooling Only
H Cooling & Heating
Capacity (×1000Btu/h)
Indoor Unit
Indoor Type
C: Corona Type
H: Alfa Type
V1: Vertu Type
F6: T6 Type
E: Elite Type
Q4: Four-way Cassette Type
T2: Duct Type
DL: Ceiling and Floor Type
S: Split
Midea

MCAC-HTSM-2007-11 Nomenclature
General Information 9
4.2 Outdoor unit
M2OA - 18 H R D N1
Refrigerant
N1 R410A N2 R407C -- R22
DC Inverter
Control Mode
R Remote Control
Function Code
C Cooling Only
H Cooling & Heating
Capacity (×1000Btu/h)
A:1st Design
B: 2nd Design
M2O: Universal Outdoor Unit with 1
drive 2
M3O: Universal Outdoor Unit with 1
drive 3
M4O: Universal Outdoor Unit with 1
drive 4

Features MCAC-HTSM-2007-11
10 General Information
5. Features
Midea’s DC multi air conditioner is new product series in Midea CAC.
l Adopt DC inverter compressor
All the outdoor units use DC inverter compressor, the efficiency is high, the EER is up to A class.
l Various styles indoor units
More than 20 different models indoor units can be chosen, including wall-mounted type, cassette type,
duct type, ceiling and floor type.
l Cooling in low temperature
The outdoor unit can operate even in -15°C.The model M4OA-27HRDN1 is standard with low ambient
kit, other outdoor units can be customized with the low ambient kit.

MCAC-HTSM-2007-11 Indoor Units
Indoor Units 11
Part 2
Indoor Units
Wall-mounted Type .......................................................... 12
Four-way Cassette Type .................................................. 43
Duct Type ......................................................................... 58
Ceiling and Floor Type..................................................... 73

Wall-mounted Type MCAC-HTSM-2007-11
12 Indoor Units
Wall-mounted Type
1. Features .................................................................................................... 13
2. Specifications .......................................................................................... 14
3. Dimensions .............................................................................................. 19
4. Service Space .......................................................................................... 25
5. Wiring Diagrams ...................................................................................... 26
6. Air Velocity and Temperature Distributions .......................................... 28
7. Electric Characteristics ........................................................................... 29
8. Sound Levels ........................................................................................... 30
9. Exploded View ......................................................................................... 31
10. Accessories ............................................................................................ 42

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 13
1. Features
The wall-mounted indoor unit has several different types for your choice, such as Corona
type ,Alfa type, Elite type,T6 type and Vertu type. The different style panels can satisfy your
different requirements. All the units have various functions, such as the function of auto-restart,
sleep mode are standard, the function of golden fin, bio filter, silver filter are optional.

Wall-mounted Type MCAC-HTSM-2007-11
14 Indoor Units
2. Specifications
2.1 Corona series
Sale Model MSCI-07HRIN1 MSCI-09HRIN1 MSCI-12HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000 12000
Input W 37 37 44
Rated current A 0.17 0.17 0.2
Heating
Capacity Btu/h 8500 11000 13000
Input W 37 37 44
Rated current A 0.17 0.17 0.2
Indoor fan motor
Model RPG18H RPG18H RPG20D
Type AC Motor AC Motor AC Motor
Brand Welling Welling Welling
Input W 36 36 38
Capacitor uF 1.2 1.2 1.5
Speed(hi/mi/lo) r/min 1200/1000/850 1200/1000/850 1180/1000/850
Indoor coil
a.Number of rows 2 2 2
b.Tube pitch(a)x row pitch(b) mm 21x13.37 21x13.37 21x13.37
c.Fin spacing mm 1.5 1.3 1.3
d.Fin type hydrophilic aluminium hydrophilic aluminium hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7 Ф7
Inner-groove tube Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 538 x 200 x 26.74 538 x 200 x 26.74 637 x 200 x 26.74
g.Number of circuits 2 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 400/330/300 450/340/300 510/450/340
Indoor noise level (Hi//Mi/Lo) dB(A) 35/32/30 37/34/31 39/37/34
Indoor unit
Dimension (W x H x D) mm 745 x 200 x 220 745 x 200 x 220 820 x 215 x 255
Packing (W x H x D) mm 800 x 270 x 340 800 x 270 x 340 875 x 375 x 285
Net/Gross weight kg 8/9.5 8/9.5 9/11
Refrigerant Type R410A R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф12.7
Drainage water pipe diameter mm Ф17.5 Ф17.5 Ф17.5
Controller(standard) R71 A/E R71 A/E R71 A/E
Application area m2 13-15 16-20 21-26

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 15
2.2 Alfa series
Sale Model MSHI-07HRIN1 MSHI-09HRIN1 MSHI-12HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000 12000
Input W 36.5 36.5 51.5
Rated current A 0.17 0.17 0.24
Heating
Capacity Btu/h 8500 11000 15000
Input W 36.5 36.5 51.5
Rated current A 0.17 0.17 0.24
Indoor fan motor
Model RPG13H RPG13H RPG20D
Type AC Motor AC Motor AC Motor
Brand Welling Welling Welling
Input W 33 33 38
Capacitor uF 1.2 1.2 1.5
Speed(hi/mi/lo) r/min 1050/920/820 1200/950/850 1250/1000/800
Indoor coil
a.Number of rows 2 2 2
b.Tube pitch(a)x row pitch(b) mm 21×13.37 21×13.37 21×13.37
c.Fin spacing mm 1.5 1.3 1.3
d.Fin type Hydrophilic aluminium Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7 Ф7
Inner-groove tube Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 578 x 200 x 26.74 578 x 200 x 26.74 653 x 200 x 26.74
g.Number of circuits 2 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 400/330/300 450/340/300 510/450/340
Indoor noise level (Hi//Mi/Lo) dB(A) 37/35/34 37/35/34 38/36/34
Indoor unit
Dimension (W x H x D) mm 775 x 215 x 216 775 x 215 x 216 860 x 220 x 240
Packing (W x H x D) mm 830 x 285 x 336 830 x 285 x 336 915 x 290 x 360
Net/Gross weight kg 8/10 8.5/10 10/12
Refrigerant Type R410A R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф12.7
Drainage water pipe diameter mm Ф17.5 Ф17.5 Ф17.5
Controller(standard) R71 A/E R71 A/E R71 A/E
Application area m2 13-15 16-20 21-26

Wall-mounted Type MCAC-HTSM-2007-11
16 Indoor Units
2.3 T6 series
Sale Model MSF6I-07HRIN1 MSF6I-09HRIN1 MSF6I-12HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000 12000
Input W 39.5 39.5 44
Rated current A 0.18 0.18 0.2
Heating
Capacity Btu/h 8000 10000 14000
Input W 39.5 39.5 44
Rated current A 0.18 0.18 0.2
Indoor fan motor
Model RPG13H RPG13H RPG20D
Type AC Motor AC Motor AC Motor
Brand Welling Welling welling
Input W 33 33 38
Capacitor uF 1.2 1.2 1.5
Speed(hi/mi/lo) r/min 1100/1000/900 1100/1000/900 1200/1080/950
Indoor coil
a.Number of rows 2 2 2
b.Tube pitch(a)x row
pitch(b)
mm 21X13.37 21X13.37 21X13.37
c.Fin spacing mm 1.3 1.3 1.3
d.Fin type Hydrophilic aluminium Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7 Ф7
Inner-groove tube Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 578 x 200 x 26.74 578 x 200 x 26.74 637 x 200 x 26.74
g.Number of circuits 2 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 400/330/300 450/340/300 510/430/350
Indoor noise level (Hi/Mi/Lo) dB(A) 39/36/32 39/36/32 40/37/34
Indoor unit
Dimension (W x H x D) mm 785 x 205 x 220 785 x 205 x 220 820 x 220 x 225
Packing (W x H x D) mm 840 x 270 x 340 840 x 270 x 340 875 x 285 x 375
Net/Gross weight kg 8/10 8/10 9.5/11.5
Refrigerant Type R410A R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф12.7
Drainage water pipe diameter. mm Ф17.5 Ф17.5 Ф17.5
Controller(standard) R71 A/E R71 A/E R71 A/E
Application area m2 12~15 12~15 12~15

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 17
2.5 Vertu series
Sale Model MSV1I-09HRDN1 MSV1I-12HRDN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 9000 12000
Input W 38 44
Rated current A 0.17 0.2
Heating
Capacity Btu/h 10000 14000
Input W 38 44
Rated current A 0.17 0.2
Indoor fan motor
Model RPG20D RPG20D
Type AC motor AC motor
Brand Welling Welling
Input W 38 38
Capacitor uF 1.2 1.2
Speed(hi/mi/lo) r/min 1150/1000/850 1150/1000/850
Indoor coil
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 21×13.37 21×13.37
c.Fin spacing mm 1.3 1.3
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 620 x 200 x 26.74 620 x 200 x 26.74
g.Number of circuits 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 570/480/350 700/520/420
Indoor noise level (Hi/Mi/Lo) dB(A) 39/34/29 39/34/29
Indoor unit
Dimension (W x H x D) mm 795 x 270 x 165 845 x 286 x 165
Packing (W x H x D) mm 850 x 285 x 340 905 x 285 x 355
Net/Gross weight kg 10/11.5 10.5/12
Refrigerant Type R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/Ф12.7
Drainage water pipe diameter. mm Ф20 Ф17.5
Controller(standard) R51I4/BGE R51I4/BGE
Application area m2 12~15 12~15

Wall-mounted Type MCAC-HTSM-2007-11
18 Indoor Units
2.6 Elite series
Model
MSEI-07HRIN1
MSEI-09HRIN1 MSEI-12HRIN1
Power supply V-ph-Hz 1Ph, 220-240V~,50Hz 1Ph, 220-240V~,50Hz 1PH, 220-240V~,50Hz
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000 12000
Input W 39.5 39.5 42
Rated current A 0.18 0.18 0.2
Heating
Capacity Btu/h 8500 10000 14000
Input W 39.5 39.5 44
Rated current A 0.16 0.16 0.2
Indoor fan motor
Model RPG13H RPG13H RPG20D
Type AC Motor AC Motor AC Motor
Brand Welling Welling welling
Input W 33 33 38
Capacitor uF 1.2 1.2 1.5
Speed(hi/mi/lo) r/min 1100/1000/900 1100/1000/900 1200/1080/950
Indoor coil
a.Number of rows 2 2 2
b.Tube pitch(a)x row pitch(b) mm 21X13.37 21X13.37 21X13.37
c.Fin spacing mm 1.3 1.3 1.3
d.Fin type Hydrophilic aluminium Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7, Inner-groove tube Ф7, Inner-groove tube Ф7, Inner-groove tube
538X252X26.74 538X252X26.74 637×294×26.74
f.Coil length x height x width mm 2 2 2
g.Number of circuits 2 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 480/400/340 480/400/340 580/500/420
Indoor noise level (Hi//Mi/Lo) dB(A) 36/33/30 36/33/30 37/34/31
Indoor unit
Dimension (W x H x D) 710× 250×191 710×250×191 790x265x204 820 x 220 x 225
Packing (W x H x D) 800×340×270 800×340×270 875×375×285 875 x 285 x 375
Net/Gross weight kg 8/9.5 8/9.5 9.5/11.5
Refrigerant Type R410A R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф12.7
Drainage water pipe diameter. mm Ф17.5 Ф17.5 Ф17.5
Controller(standard) R71 A/E R71 A/E R71 A/E
Application area m2 12~15 12~15 12~15

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 19
3. Dimensions
3.1 Corona Series
a) Indoor unit: MSCI-07HRIN1 MSCI-09HRIN1
45
20
22

Wall-mounted Type MCAC-HTSM-2007-11
20 Indoor Units
l Indoor Unit : MSCI-12HRIN1

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 21
3.2 Alfa Series
Indoor Unit: MSHI-07HRIN1 MSHI-09HRIN1
Indoor Unit: MSHI-12HRIN1
20
60

Wall-mounted Type MCAC-HTSM-2007-11
22 Indoor Units
3.3 Vertu Series
Indoor unit: MSV1I-09HRDN1 MSV1I-12HRDN1

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 23
Unit: mm
3.4 T6 Series
Dimension
Model
W H D
MSV1I-09HRDN1 795 270 165
MSV1I-12HRDN1 845 286 165

Wall-mounted Type MCAC-HTSM-2007-11
24 Indoor Units
Unit: mm
Dimension
Mode
W H D
MST6I-07HRIN1 785 205 220
MST6I-09HRIN1 785 205 220
MST6I-12HRIN1 820 220 225

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 25
4. Service Space

Wall-mounted Type MCAC-HTSM-2007-11
26 Indoor Units
5. Wiring Diagrams
5.1 MSCI-07HRIN1,MSCI-09HRIN1,MSCI-12HRIN1
MSHI-07HRIN1,MSHI-09HRIN1,MSHI-12HRIN1
5. 2 MSV1I-09HRDN1,MSV1I-12HRDN1

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 27
5.3 MST6I-07HRIN1,MST6I-09HRIN1,MST6I-12HRIN1

Wall-mounted Type MCAC-HTSM-2007-11
28 Indoor Units
6. Air Velocity and Temperature Distributions
Airflow velocity
Temperature

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 29
7. Electric Characteristics
Model Indoor Unit Power Supply IFM
Hz Voltage Min Max MCA MFA kW FLA
MSCI-07HRIN1 50 220-240 198 254 0.2075 16 0.018 0.166
MSCI-09HRIN1 50 220-240 198 254 0.2075 16 0.018 0.166
MSCI-12HRIN1 50 220-240 198 254 0.2125 16 0.02 0.17
MSHI-07HRIN1 50 220-240 198 254 0.1875 16 0.013 0.15
MSHI-09HRIN1 50 220-240 198 254 0.1875 16 0.013 0.15
MSHI-12HRIN1 50 220-240 198 254 0.2125 16 0.02 0.17
MSV1I-09HRDN1 50 220-240 198 254 0.21 16 0.02 0.17
MSV1I-12HRDN1 50 220-240 198 254 0.25 16 0.02 0.17
MSF6I-07HRIN1 50 220-240 198 254 0.1875 16 0.013 0.15
MSF6I-09HRIN1 50 220-240 198 254 0.1875 16 0.013 0.15
MSF6I-12HRIN1 50 220-240 198 254 0.2125 16 0.2 0.17
MSEI-07HRIN1 50 220-240 198 254 0.2075 16 0.018 0.166
MSEI-09HRIN1 50 220-240 198 254 0.2075 16 0.018 0.166
MSEI-12HRIN1 50 220-240 198 254 0.2125 16 0.02 0.17
Remark:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
IFM: Indoor Fan Motor

Wall-mounted Type MCAC-HTSM-2007-11
30 Indoor Units
8. Sound Levels
Model
Noise level dB(A)
High speed
MSCI-07HRIN1 35
MSCI-09HRIN1 37
MSCI-12HRIN1 39
MSHI-07HRIN1 37
MSHI-09HRIN1 37
MSHI-12HRIN1 38
MSV1I-09HRDN1 39
MSV1I-12HRDN1 39
MST6I-07HRIN1 39
MST6I-09HRIN1 39
MST6I-12HRIN1 40
MSEI-07HRIN1 36
MSEI-09HRIN1 36
MSEI-12HRIN1 37

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 31
9. Exploded View
MSCI-07HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board,assembly 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor,assembly 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

Wall-mounted Type MCAC-HTSM-2007-11
32 Indoor Units
MSCI-09HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board,Ass'y 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor,Ass'y 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 33
MSCI-12HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 13 Drain hose 1
2 Panel frame 1 14 Air out frame 1
3 Cover, electric control box 1 15 Cross flow fan assembly 1
4 Display board,Ass'y 1 16 Evaporator assembly 1
5 Motor cover 1 16.1 Evaporator front 1
6 Fan motor 1 16.2 Evaporator back 1
7 Louver motor 1 16.3 Liquid input pipe, evaporator, subassembly 1
8 Electrical control box subassembly 1 16.3.1 Pipe connecter 1
8.1 E-part box cover 1 16.4 Gas output pipe, evaporator, subassembly 1
8.2 E-Parts box 1 16.4.1 Pipe connecter 1
8.3 Transformer 1 16.5 Pipe nut 1
8.4 Main control board 1 16.6 Pipe nut 1
8.5 Terminal 1 16.7 Sphere pad 1
8.6 Wire clamp 2 16.8 Sphere pad 1
8.7 Sensor,Ass'y 1 16.9 Copper nut 1
8.8 Evaporator temp sensor 1 16.10 Copper nut 1
9 Installation Plate 1 17 Air cleaner 1
10 Remote controller 1 18 Air cleaner holder 1
11 Connecting pipe clamp 1 19 Air Filter 2
12 Chassis assembly 1

Wall-mounted Type MCAC-HTSM-2007-11
34 Indoor Units
MSHI-07HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board,Ass'y 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor,Ass'y 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 35
MSHI-09HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board,Ass'y 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor,Ass'y 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

Wall-mounted Type MCAC-HTSM-2007-11
36 Indoor Units
MSHI-12HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 13 Drain hose 1
2 Display board, Ass'y 1 14 Air out frame 1
3 Panel frame 1 15 Cross flow fan assembly 1
4 Cover, electric control box 1 16 Evaporator assembly 1
5 Motor cover 1 16.1 Evaporator front 1
6 Fan motor 1 16.2 Evaporator back 1
7 Louver motor 1 16.3 Liquid input pipe, evaporator, subassembly 1
8 Electrical control box subassembly 1 16.3.1 Pipe connecter 1
8.1 E-part box cover 1 16.4 Gas output pipe, evaporator, subassembly 1
8.2 E-Parts box 1 16.4.1 Pipe connecter 1
8.3 Transformer 1 16.5 Pipe nut 1
8.4 Main control board 1 16.6 Pipe nut 1
8.5 Terminal 1 16.7 Sphere pad 1
8.6 Wire clamp 2 16.8 Sphere pad 1
8.7 The temperature sensor 1 16.9 Copper nut 1
8.8 Room temperature sensory package 1 16.10 Copper nut 1
9 Installation Plate 1 17 Air cleaner 1
10 Remote controller 1 18 Air cleaner holder 1
11 Connecting pipe clamp 1 19 Air Filter 2
12 Chassis assembly 1

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 37
MSV1I-09HRDN1
No. Part Name Quantity No. Part Name Quantity
1 Cross flow fan 1 11 Electric control assy subassembly 1
2 Panel assembly 1 11.1 E-Parts box 1
3 Panel frame 1 11.2 Main controller subassembly 1
4 Filter the net( right) 1 11.3 Transformer 1
5 A synchronism motor 1 11.4
Room Temperature Sensor
Ass'y subassembly
1
6 Evaporator assembly 1 11.5 Evaporator temp sensor subassembly 1
6.1 Copper nut, GLM-C03 1 11.6 Auto restart control board subassembly 1
6.2 Copper nut, GLM-C03 1 12 Window cover for repairing 1
7 Enter the style grid parts 1 13 Base pan assembly 1
8 The electrical engineering cover parts 1 14 Remote controller 1
9 Filter the net( left) 1 15 Waterproof board 1
10 Air outlet assembly 1 16 Display board subassembly 1

Wall-mounted Type MCAC-HTSM-2007-11
38 Indoor Units
MSV1I-12HRDN1
No. Part Name Quantity No. Part Name Quantity
1 Cross flow fan 1 11 Electric control assy subassembly 1
2 Panel assembly 1 11.1 E-Parts box 1
3 Panel frame 1 11.2 Main controller subassembly 1
4 Filter the net( right) 1 11.3 Auto restart control board subassembly 1
5 A synchronism motor 1 11.4
Room Temperature Sensor
Ass'y subassembly
1
6 Evaporator assembly 1 11.5 Evaporator temp sensor subassembly 1
6.1 Copper nut, GLM-C03 1 11.6 Transformer 1
6.2 Copper nut, GLM-C03 1 12 Window cover for repairing 1
7 Enter the style grid parts 1 13 Base pan assembly 1
8 The electrical engineering cover parts 1 14 Remote controller 1
9 Filter the net( left) 1 15 Waterproof board 1
10 Air outlet assembly 1 16 Display board subassembly 1

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 39
MST6I-07HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board,Ass'y 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor,Ass'y 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

Wall-mounted Type MCAC-HTSM-2007-11
40 Indoor Units
MST6I-09HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 14 Chassis assembly 1
2 Display board, Ass'y 1 15 Drain hose 1
3 Panel frame 1 16 Screw cover 3
4 Cover, electric control box 1 17 Air out frame 1
5 Remote controller 1 18 Cross flow fan assembly 1
6 E-part box cover 1 19 Evaporator assembly 1
7 Electrical control box subassembly 1 19.1 Evaporator back 1
7.1 Electrical control box 1 19.2 Evaporator front 1
7.2 Terminal 1 19.3 Liquid input pipe, evaporator, subassembly 1
7.3 Transformer 1 19.4 Gas output pipe, evaporator, subassembly 1
7.4 Main control board 1 19.5 Pipe nut 1
7.5 Sensor, Ass'y 1 19.6 Pipe nut 1
7.6 Evaporator temp sensor 1 19.7 Copper nut 1
8 Motor cover 1 19.8 Copper nut 1
9 Fan motor 1 19.9 Sphere pad 1
10 Louver motor 1 19.10 Sphere pad 1
11 Installation Plate 1 20 Air cleaner 1
12 Connecting pipe clamp 1 21 Air cleaner holder 1
13 Cover board chassis back 1 22 Air Filter 2

MCAC-HTSM-2007-11 Wall-mounted Type
Indoor Units 41
MST6I-12HRIN1
No. Part Name Quantity No. Part Name Quantity
1 Front panel 1 13 Drain hose 1
2 Display board, Ass'y 1 14 Air out frame 1
3 Panel frame 1 15 Cross flow fan assembly 1
4 Cover, electric control box 1 16 Evaporator assembly 1
5 Motor cover 1 16.1 Evaporator front 1
6 Fan motor 1 16.2 Evaporator back 1
7 Louver motor 1 16.3 Liquid input pipe, evaporator, subassembly 1
8 Electrical control box subassembly 1 16.3.1 Pipe connecter 1
8.1 E-part box cover 1 16.4 Gas output pipe, evaporator, subassembly 1
8.2 E-Parts box 1 16.4.1 Pipe connecter 1
8.3 Transformer 1 16.5 Pipe nut 1
8.4 Main control board 1 16.5 Pipe nut 1
8.5 Terminal 1 16.7 Sphere pad 1
8.6 Wire clamp 1 16.8 Sphere pad 1
8.7 The temperature sensor 1 16.9 Copper nut 1
8.8 Room temperature sensory package 1 16.10 Copper nut 1
9 Installation Plate 1 17 Air cleaner 1
10 Remote controller 1 18 Air cleaner holder 1
11 Connecting pipe clamp 1 19 Air Filter 2
12 Chassis assembly 1

Wall-mounted Type MCAC-HTSM-2007-11
42 Indoor Units
10. Accessories
Number
1
2
3
4
5
6
Installation plate
Self-tapping screw ST3.925
×
Connection
Pipe Ass.
Liquid side
Gas side
Remote controller
Remote controller holder
φ
φ
6.35
9.53/12.7
φ
Plastic Expansion Pipe
Name

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 43
Four-way Cassette Type
1. Features .................................................................................................... 44
2. Specifications .......................................................................................... 45
3. Dimensions .............................................................................................. 47
4. Service Space (unit: mm) ........................................................................ 48
5. Wiring Diagrams ...................................................................................... 49
6. Air Velocity and Temperature Distributions .......................................... 50
7. Electric Characteristics ........................................................................... 51
8. Sound Levels ........................................................................................... 52
9. Exploded View ......................................................................................... 53
10. Accessories ............................................................................................ 57

Four-way Cassette Type MCAC-HTSM-2007-11
44 Indoor Units
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

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 45
2. Specifications
Sale Model MSQ4I-07HRDN1 MSQ4I-09HRDN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000
Input W 33 35
Rated current A 0.15 0.15
Heating
Capacity Btu/h 9000 11000
Input W 33 35
Rated current A 0.15 0.15
Indoor fan
motor
Model YDK45-4F YDK45-4F
Type motor Motor
Brand Welling Welling
Input W 63/57/47 63/57/47
Capacitor uF 1.2 1.2
Speed(hi/lo) r/min 830/660 830/660
Indoor coil
a.Number of rows 1 1
b.Tube pitch(a)x row pitch(b) mm 21 x 13.37 21 x 13.37
c.Fin spacing mm 1.4 1.4
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 1188x210x13.37 1188x210x13.37
g.Number of circuits 3 3
Indoor air flow (Hi/Mi/Lo) m3/h 510/400 510/400
Indoor noise level (Hi/Lo) dB(A) 36/33 36/33
Indoor unit
Dimension (W x H x D) mm 580 x 254 x 580 580 x 254 x 580
Packing (W x H x D) mm 750 x 340 x 750 750 x 340 x 750
Net/Gross weight kg 18.5/25 18.5/25
Refrigerant Type R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Φ6.35/Φ9.53 Φ6.35/Φ9.53
Drainage water pipe diameter mm Φ25 Φ25
Controller(standard) R11HG/E R11HG/E
Application area m2 13-17 17-21

Four-way Cassette Type MCAC-HTSM-2007-11
46 Indoor Units
Sale Model MSQ4I-12HRDN1 MSQ4I-18HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 12000 18000
Input W 40 80
Rated current A 0.2 0.4
Heating
Capacity Btu/h 13000 20500
Input W 40 80
Rated current A 0.2 0.4
Indoor fan
motor
Model YDK45-4F YDK45-4F
Type motor motor
Brand Welling Welling
Input W 63/57/47 63/57/47
Capacitor uF 1.5 2.5
Speed(hi/lo) r/min 830/660 830/660
Indoor coil
a.Number of rows 1 2
b.Tube pitch(a)x row pitch(b) mm 21 x 13.37 21 x 26.74
c.Fin spacing mm 1.4 1.4
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 1188x210x13.37 1188x210x26.74
g.Number of circuits 3 5
Indoor air flow (Hi/Mi/Lo) m3/h 550/420 700/560
Indoor noise level (Hi/Lo) dB(A) 36/33 43/40
Indoor unit
Dimension (W x H x D) mm 580 x 254 x 580 580 x 254 x 580
Packing (W x H x D) mm 750 x 340 x 750 750 x 340 x 750
Net/Gross weight kg 18.5/25 21\28
Refrigerant Type R410A R410A
Refrigerant pipe Liquid side/ Gas side mm Φ6.35/Φ12.7 Φ6.35/Φ12.7
Drainage water pipe diameter mm Φ25 Φ25
Controller(standard) R11HG/E R11HG/E
Application area m2 20-25 25-35

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 47
3. Dimensions
Indoor unit (7000Btu/h/9000Btu/h /12000Btu/h /18000Btu/h) :
580(Body)
67
600(Ceiling hole)
650(Panel)
401(Hook-location)
6
1
1
(
H
o
o
k
-
l
o
c
a
t
i
o
n
)
5
8
0
(
B
o
d
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)
4
2
2
2
8
.
5
6
0
0
(
C
e
i
l
i
n
g
h
o
l
e
)
6
5
0
(
P
a
n
e
l
)
D
r
a
i
n
s
i
d
e
a
n
d
T
u
b
i
n
g
s
i
d
e
A

Four-way Cassette Type MCAC-HTSM-2007-11
48 Indoor Units
4. Service Space (unit: mm)

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 49
5. Wiring Diagrams
MSQ4I-07HRDN1, MSQ4I-09HRDN1, MSQ4I-12HRDN1, MSQ4I-18HRIN1

Four-way Cassette Type MCAC-HTSM-2007-11
50 Indoor Units
6. Air Velocity and Temperature Distributions
(Reference Data)Discharge angle 60º
Airflow velocity
Temperature

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 51
7. Electric Characteristics
Model Indoor Unit Power Supply IFM
Hz Voltage Min. Max. MCA MFA kW FLA
MSQ4I-07HRDN1 50 220~240 198 254 0.36 16 0.063 0.29
MSQ4I-09HRDN1 50 220~240 198 254 0.36 16 0.063 0.29
MSQ4I-12HRDN1 50 220~240 198 254 0.36 16 0.063 0.29
MSQ4I-18HRIN1 50 220~240 198 254 0.3625 16 0.045 0.29
Remark:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
IFM: Indoor Fan Motor

Four-way Cassette Type MCAC-HTSM-2007-11
52 Indoor Units
8. Sound Levels
1.0m
FOUR-WAY CASSETTE TYPE
Microphone
Model
Noise level dB(A)
High speed
MSQ4I-07HRDN1 36
MSQ4I-09HRDN1 36
MSQ4I-12HRDN1 36
MSQ4I-18HRIN1 43

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 53
9. Exploded View
MSQ4I-07HRDN1
No. Part Name Quantity No. Part Name Quantity
1 water collector 1 15 wire crossing board 1
2 evaporator 1 16 centrifugal fan 1
3 Temp. sensor 1 17 a synchronism motor 1
4 liquid input pipe, evaporator, subassembly 1 18 cover, electronic control box 1
5 copper nut 1 19 fan motor underlay 1
6 gas output pipe, evaporator, subassembly 1 20 electronic control box 1
7 copper nut 1 20.1 fan motor capacitor 1
8 drain pipe 1 20.2 power transformer 1
9 output pipe, sealing board 1 20.3 main controller subassembly 1
10 right clapboard 1 21 base pan assembly 1
11 drain pump bracket 1 22 evaporator fixing hook 1
12 drain pump 1 23 bracket, water collector 4
13 left clapboard 1 24 room temp. sensor 1
14 evaporator fixing board 1 25 remote controller 1

Four-way Cassette Type MCAC-HTSM-2007-11
54 Indoor Units
MSQ4I-09HRDN1
No. Part Name Quantity No. Part Name Quantity
1 water collector 1 15 wire crossing board 1
2 evaporator 1 16 centrifugal fan 1
3 Temp. sensor 1 17 a synchronism motor 1
4 liquid input pipe, evaporator, subassembly 1 18 cover, electronic control box 1
5 copper nut 1 19 fan motor underlay 1
6 gas output pipe, evaporator, subassembly 1 20 electronic control box 1
7 copper nut 1 20.1 fan motor capacitor 1
8 drain pipe 1 20.2 power transformer 1
9 output pipe, sealing board 1 20.3 main controller subassembly 1
10 right clapboard 1 21 base pan assembly 1
11 drain pump bracket 1 22 evaporator fixing hook 1
12 drain pump 1 23 bracket, water collector 4
13 left clapboard 1 24 room temp. sensor 1
14 evaporator fixing board 1 25 remote controller 1

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 55
MSQ4I-12HRDN1
No. Part Name Quantity No. Part Name Quantity
1 water collector 1 15 wire crossing board 1
2 evaporator 1 16 centrifugal fan 1
3 Temp. sensor 1 17 a synchronism motor 1
4 liquid input pipe, evaporator, subassembly 1 18 cover, electronic control box 1
5 copper nut 1 19 fan motor underlay 1
6 gas output pipe, evaporator, subassembly 1 20 electronic control box 1
7 copper nut 1 20.1 capacitor 1
8 drain pipe 1 20.2 power transformer 1
9 output pipe, sealing board 1 20.3 main controller subassembly 1
10 right clapboard 1 21 base pan assembly 1
11 drain pump bracket 1 22 evaporator fixing hook 1
12 drain pump 1 23 bracket, water collector 4
13 left clapboard 1 24 room temp. sensor 1
14 evaporator fixing board 1 25 remote controller 1

Four-way Cassette Type MCAC-HTSM-2007-11
56 Indoor Units
MSQ4I-18HRIN1
No. Part Name Quantity No. Part Name Quantity
1 water collector 1 11 E-part box cover 1
2 Centrifugal fan 1 12 Drain Pump Holder 1
3 Fixing board, water pan 4 13 Drain Pump 1
4 Evaporator Fixture Board Ass'y 1 14 clapboard right assembly 1
5 Fan motor 1 15 clapboard left 1
6 Fan Motor Underlay 1 16 Evaporator Fixture Board Ass'y 1
7 Chassis 1 17 Evaporator assembly 1
8 Wire crossing board 1 17.1 input pipe of evaporator 1
9 Sealing board, pipe out 1 17.2 output pipe of evaporator 1
10 Electric control assy 1 18 Outdoor Term sender assembly 1
10.1 transformer 1 19 Temp. sensor 1
10.2 fan capacitor 1 20 remote control 1
10.3 main control plane subassembly of indoor 1 21 water level sensor 1

MCAC-HTSM-2007-11 Four-way Cassette Type
Indoor Units 57
10. Accessories

Duct Type MCAC-HTSM-2007-11
58 Indoor Units
Duct Type
1. Features .................................................................................................... 59
2. Specifications .......................................................................................... 60
3. Dimension ................................................................................................ 62
4. Service Space .......................................................................................... 63
5. Wiring Diagrams ...................................................................................... 64
6. Air Velocity and Temperature Distributions (Reference Data) ............. 65
7. Electric Characteristics ........................................................................... 66
8. Sound Levels ........................................................................................... 67
9. Exploded View ......................................................................................... 68
10. Accessories ............................................................................................ 72

MCAC-HTSM-2007-11 Duct Type
Indoor Units 59
1. Features
n All plastic body, small weight and anti-corrosion;
n Low operation noise;
n Adopt cross fan;
n Compact structure, space saving
n Adopt 4-bend evaporator with high efficiency

Duct Type MCAC-HTSM-2007-11
60 Indoor Units
2. Specifications
Sale Model MST2I-07HRIN1 MST2I-09HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 7000 9000
Input W 40 40
Rated current A 0.2 0.2
Heating
Capacity Btu/h 8500 11000
Input W 40 40
Rated current A 0.2 0.2
Indoor fan
motor
Model RPS20D RPS20D
Brand Welling Welling
Input W 34.5/30.5/27.3 34.5/30.5/27.3
Capacitor uF 1.2 1.2
Speed(hi/mi/lo) r/min 940/840/760 940/840/760
Indoor coil
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 21 x 13.37 21 x 13.37
c.Fin spacing mm 1.5 1.5
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 718X350X26.74 718X350X26.74
g.Number of circuits 2 2
Indoor air flow (Hi/Mi/Lo) m3/h 680/620/540 680/620/540
Indoor external static pressure (Hi) Pa 10 10
Indoor noise level (Hi/Mi/Lo) dB(A) 35/32/30 36/33/30
Indoor unit
Dimension (W x H x D) mm 874 x 203 x 375 874 x 203 x 375
Packing (W x H x D) mm 1044 x 439 x 277 1044 x 439 x 277
Net/Gross weight kg 15/19 15/19
Refrigerant Type R410A R410A
Design pressure MPa 4.2/2.5 4.2/2.5
Refrigerant pipe Liquid side/ Gas side mm Φ6.35/Φ9.53 Φ6.35/Φ9.53
Drainage water pipe diameter mm Φ19 Φ19
Controller(standard) R11HG/E R11HG/E
Application area m2 13-17 17-21

MCAC-HTSM-2007-11 Duct Type
Indoor Units 61
Sale Model MST2I-12HRIN1 MST2I-18HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 12000 18000
Input W 45 60
Rated current A 0.2 0.3
Heating
Capacity Btu/h 13000 20500
Input W 45 60
Rated current A 0.2 0.3
Indoor fan
motor
Model RPS20D YDK30-4A
Brand Welling Welling
Input W 34.5/30.5/27.3 52/47/43
Capacitor uF 1.2 3
Speed(hi/mi/lo) r/min 940/840/760 940/850/750
Indoor coil
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 21 x 13.37 21 x 13.37
c.Fin spacing mm 1.5 1.5
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф7 Ф7
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 718X350X26.74 1014X350X26.74
g.Number of circuits 2 4
Indoor air flow (Hi/Mi/Lo) m3/h 680/620/540 870/800/720
Indoor external static pressure (Hi) Pa 10 10
Indoor noise level (Hi/Mi/Lo) dB(A) 38/35/33 40/38/35
Indoor unit
Dimension (W x H x D) mm 874 x 203 x 375 1224 x 206 x 365
Packing (W x H x D) mm 1044 x 439 x 277 1388 x 439 x 277
Net/Gross weight kg 15/19 18/23
Refrigerant Type R410A R410A
Design pressure MPa 4.2/2.5 4.2/2.5
Refrigerant pipe Liquid side/ Gas side mm Φ6.35/Φ12.7 Φ6.35/Φ12.7
Drainage water pipe diameter mm Φ19 Φ19
Controller(standard) R11HG/E R11HG/E
Application area m2 20-25 30-35

Duct Type MCAC-HTSM-2007-11
62 Indoor Units
3. Dimension
Indoor unit (7000Btu/h /9000Btu/h /12000Btu/h):
Refrigerant pipe
25
102
87
Air Outlet
55
220
175
63
Refrigerant pipe
Gas Side 9.0
Liquid Side 9.53
Drain port
Φ25
268
148
100
Φ
100
Fresh
air inlet
>250mm
>500mm>500mm
203
874
674
829
874
375
375
Indoor unit (18000Btu/h)
Refrigerant pipe
25
102
87
Air Outlet
55
220
175
63
Refrigerant pipe
Gas Side 9.0
Liquid Side 9.53
Drain port
Φ25
268
148
100
Φ
100
Fresh
air inlet
>250mm
>500mm>500mm
206
206
1179
979
1179
1224
365
365

MCAC-HTSM-2007-11 Duct Type
Indoor Units 63
4. Service Space

Duct Type MCAC-HTSM-2007-11
64 Indoor Units
5. Wiring Diagrams
MST2I-07HRIN1/MST2I-09HRIN1/MST2I-12HRIN1/MST2I-18HRIN1

MCAC-HTSM-2007-11 Duct Type
Indoor Units 65
6. Air Velocity and Temperature Distributions (Reference Data)
Discharge angle 60º
Airflow velocity
Temperature

Duct Type MCAC-HTSM-2007-11
66 Indoor Units
7. Electric Characteristics
Model Indoor Unit Power Supply Indoor fan motor
Hz Voltage Min. Max. MCA MFA kW FLA
MST2I-07HRIN1 50 220~240 198 254 0.2125 16 0.02 0.17
MST2I-09HRIN1 50 220~240 198 254 0.2125 16 0.02 0.17
MST2I-12HRIN1 50 220~240 198 254 0.2125 16 0.02 0.17
MST2I-18HRIN1 50 220~240 198 254 0.325 16 0.02 0.26
Remark:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
IFM:Indoor Fan Motor

MCAC-HTSM-2007-11 Duct Type
Indoor Units 67
8. Sound Levels
Duct
CONCEALED DUCT TYPE
Microphone
1.0m
Model
Noise level dB(A)
High speed
MST2I-07HRIN1 39
MST2I-09HRIN1 39
MST2I-12HRIN1 39
MST2I-18HRIN1 41

Duct Type MCAC-HTSM-2007-11
68 Indoor Units
9. Exploded View
MST2I-07HRIN1
No. Part Name nos No. Part Name nos
1 filter 2 13 display board subassembly 1
2 drip tray 1 14 motor cover 1
3 left bracket, evaporator 1 15 motor base 1
4 gas output pipe, evaporator, subassembly 1 16 motor 1
4.1 copper nut 1 17 bracket I, wind inlet case 2
4.2 Temp. sensor 1 18 bracket, wind outlet case 1
5.1 evaporator subassembly I 1 19 scroll subassembly 1
5.2 evaporator subassembly II 1 20 bracket , wind inlet caseⅡ 2
6 liquid input pipe, evaporator, subassembly 1 21 bracket 2, wind outlet case 1
6.1 copper nut 1 22 bearing base 1
7 electronic control box assembly 1 23 cross flow fan 1
7.1 electric control box subassembly 1 24 press block, filter 8
7.2 transformer 1 25 chassis 1
7.3 main controller subassembly 1 26 bracket I, wind inlet case 1
8 capacitor box 1 27 bracket , wind inlet caseⅢ 1
8.1 fan motor capacitor 1 28 press bar, drip tray 2
9 cover, electric control box 1 29 protection cover, drip tray 1
10 bracket, remote controller 1 30 bracket , wind inlet caseⅢ 1
11 remote controller 1 31 Room Temp. sensor 1
12 installation box, receiver module 1 1

MCAC-HTSM-2007-11 Duct Type
Indoor Units 69
MST2I-09HRIN1
Part Name Quantity
1 filter 2 13 display board subassembly 1
2 drip tray 1 14 motor cover 1
3 left bracket, evaporator 1 15 motor base 1
4 gas output pipe, evaporator, subassembly 1 16 motor 1
4.1 copper nut 1 17 bracket I, wind inlet case 2
4.2 Temp. sensor 1 18 bracket, wind outlet case 1
5.1 evaporator subassembly I 1 19 scroll subassembly 1
5.2 evaporator subassembly II 1 20 bracket , wind inlet caseⅡ 2
6 liquid input pipe, evaporator, subassembly 1 21 bracket 2, wind outlet case 1
6.1 copper nut 1 22 bearing base 1
7 electronic control box assembly 1 23 cross flow fan 1
7.1 electric control box subassembly 1 24 press block, filter 8
7.2 transformer 1 25 chassis 1
7.3 main controller subassembly 1 26 bracket I, wind inlet case 1
8 capacitor box 1 27 bracket , wind inlet caseⅢ 1
8.1 fan motor capacitor 1 28 press bar, drip tray 2
9 cover, electric control box 1 29 protection cover, drip tray 1
10 bracket, remote controller 1 30 bracket , wind inlet caseⅢ 1
11 remote controller 1 31 Room Temp. sensor 1
12 installation box, receiver module 1 1

Duct Type MCAC-HTSM-2007-11
70 Indoor Units
MST2I-12HRIN1
No. Part Name Quantity No. Part Name Quantity
1 filter 2 13 display board subassembly 1
2 drip tray 1 14 motor cover 1
3 left bracket, evaporator 1 15 motor base 1
4 gas output pipe, evaporator, subassembly 1 16 motor 1
4.1 copper nut 1 17 bracket I, wind inlet case 2
4.2 Temp. sensor 1 18 bracket, wind outlet case 1
5.1 evaporator subassembly I 1 19 scroll subassembly 1
5.2 evaporator subassembly II 1 20 bracket , wind inlet caseⅡ 2
6 liquid input pipe, evaporator, subassembly 1 21 bracket 2, wind outlet case 1
6.1 copper nut 1 22 bearing base 1
7 electronic control box assembly 1 23 cross flow fan 1
7.1 electric control box subassembly 1 24 press block, filter 8
7.2 transformer 1 25 chassis 1
7.3 main controller subassembly 1 26 bracket I, wind inlet case 1
8 capacitor box 1 27 bracket , wind inlet caseⅢ 1
8.1 fan motor capacitor 1 28 press bar, drip tray 2
9 cover, electric control box 1 29 protection cover, drip tray 1
10 bracket, remote controller 1 30 bracket , wind inlet caseⅢ 1
11 remote controller 1 31 Room Temp. sensor 1
12 installation box, receiver module 1 1

MCAC-HTSM-2007-11 Duct Type
Indoor Units 71
MST2I-18HRIN1
No. Part Name Quantity No. Part Name Quantity
1 filter 2 13 display board subassembly 1
2 drip tray 1 14 motor cover 1
3.1 evaporator subassembly I 1 15 motor 1
3.2 evaporator subassembly II 1 16 bracket, wind outlet case 1
4 gas output pipe, evaporator, subassembly 1 17 bracket, wind outlet case 1
4.1 copper nut 1 18 bracket I, wind inlet case 1
5 liquid input pipe, evaporator, subassembly 1 19 scroll subassembly 1
5.1 copper nut 1 20 cross flow fan 1
6 protection cover, drip tray 1 21 bearing base 1
7 electronic control box assembly 1 22 left bracket, evaporator 1
7.1 electric control box subassembly 1 23 bracket , wind inlet caseⅢ 1
7.2 transformer 1 24 bracket I, wind inlet case 2
7.3 main controller subassembly 1 25 press block, filter 8
8 capacitor box 1 26 chassis 1
8.1 fan motor capacitor 1 27 bracket , wind inlet caseⅡ 2
9 cover, electric control box 1 28 bracket , wind inlet caseⅢ 1
10 bracket, remote controller 1 29 press bar, drip tray 3
11 remote controller 1 30 Temp. sensor 1
12 installation box, receiver module 1 31 Room Temp. sensor 1

Duct Type MCAC-HTSM-2007-11
72 Indoor Units
10. Accessories
NO Name Qty Function
1 Insulation pipe 2 Pipe joint heat insulation
2 Remote controller 1 Remote control air conditioner
3 Big washer 8 Overhang indoor unit
4 Constriction bandage 10 Binding insulation pipe
5 Water outlet joint (for cool/heat type only) 1 Outdoor unit drainage
6 Gasket (for cool/heat type only) 1 Outdoor unit drainage
7 Copper nut 2 Connecting pipe
8 Drain hose 1 Indoor unit drainage
9 7# Alkaline battery 1
10 Remote signal receiver subassembly 1
11 Outdoor/indoor unit signal wire 1

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 73
Ceiling and Floor Type
1. Features .................................................................................................... 74
2. Specification ............................................................................................ 75
3. Dimensions .............................................................................................. 76
4. Service Space .......................................................................................... 77
5. Wiring Diagrams ...................................................................................... 78
6. Air Velocity and Temperature Distributions .......................................... 79
7. Electric Characteristics ........................................................................... 81
8. Sound Levels ........................................................................................... 82
9. Exploded View ......................................................................................... 83
10. Accessories ............................................................................................ 85

Ceiling and Floor Type MCAC-HTSM-2007-11
74 Indoor Units
1. Features
1.1. New design, more modern and elegant appearance.
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.

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 75
2. Specification
Sale Model MSDLI-12HRIN1 MSDLI-18HRIN1
Power supply V-ph-Hz 220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Cooling
Capacity Btu/h 12000 18000
Input W 35 35
Rated current A 0.145 0.145
Heating
Capacity Btu/h 13500 20000
Input W 35 35
Rated current A 0.145 0.145
Indoor fan
motor
Model YSK25-6L YSK25-6L
Type AC motor AC motor
Brand Welling Welling
Input W 33.4/31.1/29.5 33.4/31.1/29.5
Capacitor uF 1.2 1.2
Speed(hi/mi/lo) r/min 756/666/592 756/666/592
Indoor coil
a.Number of rows 2 2
b.Tube pitch(a)x row pitch(b) mm 25.4 x 22 25.4 x 22
c.Fin spacing mm 1.8 1.8
d.Fin type Hydrophilic aluminium Hydrophilic aluminium
e.Tube outside dia.and type mm
Ф9.53 Ф9.53
Inner-groove tube Inner-groove tube
f.Coil length x height x width mm 804x254x44 804x254x44
g.Number of circuits 3 3
Indoor air flow (Hi/Mi/Lo) m3/h 650/570/500 650/570/500
Indoor noise level (Hi/Mi/Lo) dB(A) 39/38/36 41/39/36
Indoor unit
Dimension (W x H x D) mm 990 x 660 x 206 990 x 660 x 206
Packing (W x H x D) mm 1089 x 744 x 296 1089 x 744 x 296
Net/Gross weight kg 27/33 27/33
Refrigerant Type R410A R410A
Design pressure MPa 4.2/2.5 4.2/2.5
Refrigerant pipe Liquid side/ Gas side mm Ф6.35/Ф12.7 Ф6.35/Ф12.7
Drainage water pipe dia. mm Ф25 Ф25
Controller(standard) R11HG/E R11HG/E
Application area m2 12~18 20~30

Ceiling and Floor Type MCAC-HTSM-2007-11
76 Indoor Units
3. Dimensions
MSDLI-12HRIN1 MSDLI-18HRIN1
Unit: mm
Dimension
Mode
A B C
MSDLI-12HRIN1 990 660 206
MSDLI-18HRIN1 990 660 206

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 77
4. Service Space
Ceiling type installation

Ceiling and Floor Type MCAC-HTSM-2007-11
78 Indoor Units
5. Wiring Diagrams
MSDLI-12HRIN1/MSDLI-18HRIN1

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 79
6. Air Velocity and Temperature Distributions
Discharge angle 60° (CEILING)
Airflow velocity
Temperature

Ceiling and Floor Type MCAC-HTSM-2007-11
80 Indoor Units
Discharge angle 60° (FLOOR)
Airflow velocity
Temperature

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 81
7. Electric Characteristics
Model
Units Power Supply IFM
Hz Voltage Min. Max. MCA MFA kW FLA
MSDL-12HRDN1 50 220-240 198 254 0.18 16 0.034 0.145
MSDL-18HRDN1 50 220-240 198 254 0.18 16 0.034 0.145
Remark:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
IFM: Indoor Fan Motor

Ceiling and Floor Type MCAC-HTSM-2007-11
82 Indoor Units
8. Sound Levels
Ceiling Floor
Model
Noise level dB(A)
High speed
MSDLI-12HRIN1 39
MSDLI-18HRIN1 41

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 83
9. Exploded View
MSDLI-12HRIN1
No.
Part Name nos No. Part Name nos
1 Cover for E-box 1 20.2.1 Copper nut 1
2 Electric control assy subassembly 1 20.3 Evaporator discharge pipe 1
2.1 E-Parts box 1 20.3.1 Copper nut 1
2.2 Motor capacitor 1 21 Installation clamp 2
2.3 Main controller subassembly 1 22 Left fixed board, evaporator 1
3 Scroll-shell, up 2 23 Right frame holder, evaporator subassembly 1
4 Left fixing clamp for motor 1 24 Display panel box 1
5 A synchronism motor 1 25 Display board subassembly 1
6 Scroll-shell, down 2 26 Manual button 1
7 middle beam ,up 1 27 Left fixing board Evaporator 1
8 Plastic cover 1 28 air outlet subassembly 1
9 Right fixing board of Evaporator 1 29 Panel assembly 1
10 Left fixing board of Evaporator subassembly 1 30 Grille strip 2
11 Drip tray subassembly 1 31 Grille strengthening rib 1
12 Base pan frame assy subassembly 1 32 Grille lock 1
13 Right cover board 1 33 Air inlet grille 1
14 Right installation board 1 34 Filter 2
15 Base pan assembly 1 35 Clap for grille 2
16 Rear cover 1 36 Right fixing clamp for motor 1
17 Right fixed board, evaporator subassembly 1 37 Fan 2
18 Left installation board 1 38 Wiry holder for water collector 1
19 Left cover 1 39 Remote controller 1
20 Evaporator assembly 1 40 Holder 1
20.1 Evaporator 1 41 Room Temperature Sensor Ass'y subassembly 1
20.2 Evaporator suction pipe 1 42 Evaporator temp sensor assembly 1

Ceiling and Floor Type MCAC-HTSM-2007-11
84 Indoor Units
MSDLI-18HRIN1
No. Part Name nos
No. Part Name nos
1 Cover for E-box 1 20.2.1 Copper nut 1
2 Electric control assy subassembly 1 20.3 Evaporator discharge pipe 1
2.1 E-Parts box 1 20.3.1 Copper nut 1
2.2 Motor capacitor 1 21 Installation clamp
1
2.3 Main controller subassembly 1 22
Left fixed board, evaporator
1
3 Scroll-shell, up 2 23 Right frame holder, evaporator subassembly 1
4 Left fixing clamp for motor
1
24 Display panel box 1
5 A synchronism motor 1 25 Display board subassembly 1
6 Scroll-shell, down 2 26 Manual button 1
7 middle beam ,up 1 27 Left fixing board of Evaporator 1
8 Plastic cover 1 28 air outlet subassembly 1
9 Right fixing board Evaporator 1 29
Panel assembly
1
10 Left fixing board of Evaporator subassembly 1 30 Grille strip 2
11 Drip tray subassembly 1 31 Grille strengthening rib 1
12 Base pan frame assy subassembly 1 32 Grille lock 1
13 Right cover board 1 33 Air inlet grille 1
14 Right installation board 1 34 Filter 2
15 Base pan assembly 1 35 Clap for grille 2
16 Rear cover 1 36 Right fixing clamp for motor 1
17
Right fixed board, evaporator subassembly
1 37 Fan 2
18 Left installation board 38 Wiry holder for water collector 1
19 Left cover 39 Remote controller 1
20 Evaporator assembly 40 Holder 1
20.1 Evaporator 41 Room Temperature Sensor Ass'y 1
20.2 Evaporator suction pipe 42 Evaporator temp sensor assembly 1

MCAC-HTSM-2007-11 Ceiling and Floor Type
Indoor Units 85
10. Accessories
NO Name Qty. Outline Usage
1 Owner's manual 1
2 Installation manual 1 (This manual)
3 Hook 2
For wall mounting installation
4 Hanging arm 2
For ceiling installation
Remote controller & Its Frame
l Remote controller....................1
l Frame.......................................1
l Mounting screw
(ST2.9x10-C-H)........................2
l Alkaline dry batteries(AM4)
.....................................................2

Outdoor Units MCAC-HTSM-2007-11
86 Outdoor Units
Part 3
Outdoor Units
1. Features ....................................................................... 87
2. Specifications .............................................................. 88
3. Dimensions .................................................................. 91
4. Service Space .............................................................. 92
5. Piping Diagrams .......................................................... 93
6. Wiring Diagrams .......................................................... 94
7. Combination capacity table ......................................... 96
8. Field Wiring .................................................................. 99
9. Electric Characteristics ............................................. 100
10. Operation Limits ...................................................... 101
11. Sound Levels............................................................ 103
12. Exploded View ......................................................... 104
13. Troubleshooting ....................................................... 108

MCAC-HTSM-2007-11 Features
Outdoor Units 87
1. Features
1.1 Outdoor machine tightly packed, the bigger building type also needs one set outdoors machine only; Can
guarantee to construct the external appearance more simple and direct, and the gearing space need is
small, don't affect the room to adopt the light
1.2 Compressor start steady the start electric current is small, using the interference of the electric
appliances to the impact and others of the charged barbed wire net small

Specifications MCAC-HTSM-2007-11
88 Outdoor Units
2. Specifications
Outdoor Unit:
Outdoor Model M2OA-18HRDN1 5.1.1.1.1.1.1 M3OA-27HRDN1
Power supply V-ph-Hz
220~240-1-50 220~240-1-50
Supply electricity type Outdoor unit supply power
Indoor Units Combination Single Double
27000
Input W 1000~1300 1644 1000~1300 1800~2200 2465
Rated current A 4.6~6.0 8.5 4.6~6.0
30000
Input W 1150~1450 1866
Rated current A 5.3~6.7 9.0 5.8~7.6 10~12.5 12.5
HITACHI HITACHI
Capacity Btu/h
460 460
Outdoor fan motor
Model
780 780
Outdoor coil
Number of rows
Tube pitch(a)x row pitch(b)
Hydrophilic aluminium
Tube outside dia.
Coil length x height x width
766×660×44 766×660×44
Number of circuits
4 4
Outdoor air flow m3/h
3000 3000
Outdoor noise level dB(A)
58.5 59.5
Outdoor unit
Dimension(W x H x D) mm
845X695X335 845X695X335
Packing (W x H x D) mm
965 x 772 x 399 965 x 772 x 399
Net/Gross weight kg
68/72 68/72
Refrigerant
type
R410A R410A
Charged volume
g
The electronics inflation valve and capillary
Design pressure(Hi/Lo) MPa
4.2/2.5 4.2/2.5
Refrigerant piping
(between each indoor unit and outdoor unit)
Φ6.35/Φ9.53 Φ6.35/Φ9.53
Max. refrigerant pipe length
10 10
Connection wiring
Power wiring mm2
2.5 x 3 core 3.3
Signal wiring mm2
Cooling(17~43) Heating(-7~21)
Application area m2

MCAC-HTSM-2007-11 Specifications
Outdoor Units 89
Outdoor Model M2OB-18HRDN1
Power supply V-ph-Hz 220~240-1-50
Supply electricity type Outdoor unit supply power
Indoor Units Combination Single Double
Cooling
Capacity Btu/h 7000~12000 18000
Input W
1000~1200
1600
Rated current A 4.5~5.5 7
Heating
Capacity Btu/h 10000~14000 21000
Input W
1050~1250
1900
Rated current A 5.0~6.0 8.5
Max. input consumption W 1500 2150
Max. current A 7.5 10.5
Compressor
Model
C-6RVN93H0V
Type ROTARY
Brand
Sanyo
Capacity Btu/h 15430
Input W 1470
Rated current A 9
Refrigerant oil ml 350
Outdoor fan motor
Model YDK53-6M
Brand
Welling
Input W 143
Capacitor uF 3
Speed r/min 780
Outdoor coil
Number of rows
2
Tube pitch(a)x row pitch(b) mm 25.4×22
Fin spacing mm 1.7
Fin type
Hydrophilic aluminium
Tube outside dia. and type mm φ9.53 inner-groove tube
Coil length x height x width mm 766×660×44
Number of circuits
4
Outdoor air flow m3/h 3000
Outdoor noise level dB(A) 53
Outdoor unit
Dimension(W x H x D) mm 845X695X335
Packing (W x H x D) mm 965 x 772 x 399
Net/Gross weight kg 61/65
Refrigerant
type R410A
Charged volume g 1800
Throttle type electric expansion valve and capillary
Design pressure(Hi/Lo) MPa 4.2/2.5
Liquid side/ Gas side mm Φ6.35/Φ9.53
Refrigerant piping
(between each indoor
unit and outdoor unit)
Max. refrigerant pipe length m 15
Max. difference in level m 10
Connection wiring
Power wiring mm2 2.5 x 3 cores
Signal wiring mm2 1
Ambient temp
°C
Cooling(17~43) Heating(-7~21)
Application area m2 35-43

Specifications MCAC-HTSM-2007-11
90 Outdoor Units
Sale Model M4OA-27HRDN1
Supply electricity type Outdoor unit supply power
Indoor Units Combination Single Twin Three Four
Power supply V-ph-Hz 220~240-1-50
Cooling
Capacity Btu/h
7000~18000 14000~24000 21000~ 26000
27000
Input W 1334-1784 1730-2200 2234-2531 2529
Rated current A
5.8~7.8 7.5~10.7 9.7~12.1
11.0
Heating
Capacity Btu/h
9000~18000 16000~25000 21000~ 27000
28000
Input W 1356-2103 1730-2653 2459-2869 2743
Rated current A 7.2~11 9.3~14.9 12.9~15.3 14.5
Max. input consumption W 4800
Max. current A 21
Compressor
Model
TNB220FLBM1
Type
rolling piston type rotary
Brand
MITSUBISHI ELECTRIC
Capacity
Btu/h
24328
Input
W
2200
Rated current
A
9.7
Capacitor
uF
60
Refrigerant oil
ml
MEL 56/670
Outdoor fan motor
Model
YDK53-6Z
Brand
Welling
Input
W
141.5/92
Capacitor
uF
3
Speed(Hi/Lo)
r/min
815/550
Outdoor coil
Number of rows
1
Tube pitch(a)x row pitch(b)
mm
25.4X22
Fin spacing
mm
1.5
Fin type (code)
Hydrophilic aluminum
Tube outside dia. and type
mm
Φ9.53
internal thread pipe
Coil length x height x width
mm
620 x 813 x 248
Number of circuits
2
Outdoor air flow
m3/h
3500/
Outdoor noise level
dB(A)
60.5
Outdoor unit
Dimension(W x H x D)
mm
968*858*355
Packing (W x H x D)
mm
1043 x 915 x 395
Net/Gross weight
kg
80/84
Refrigerant
Type
R410A
Charged volume
g
2550
Throttle type
The electric expansion valve and capillary
Design pressure
MPa
4.2/2.5
Refrigerant pipe
(between each
indoor unit and
outdoor unit)
Liquid side/ Gas side
mm
Φ6.35/Φ9.53
Max. refrigerant pipe length
m
15
Max. difference in level
m
10
Connection wiring
Power wiring
mm2
2.5 x 3 cores
Signal wiring
mm2
1
Ambient temp °C Cooling(-15~43) Heating(-7~21)
Application area
m2

MCAC-HTSM-2007-11 Dimensions
Outdoor Units 91
3. Dimensions
M2OA-18HRDN1, M2OB-18HRDN1, M3OA-27HRDN1, M4OA-27HRDN1
Unit: mm
MODEL A B C D E H
M2OA-18HRDN1
845 560 335 355 315 695
M2OB-18HRDN1
845 560 335 355 315 695
M3OA-27HRDN1
845 560 335 355 315 695
M4OA-27HRDN1

Service Space MCAC-HTSM-2007-11
92 Outdoor Units
4. Service Space

MCAC-HTSM-2007-11 Piping Diagrams
Outdoor Units 93
5. Piping Diagrams
M2OA-18HRDN1/M2OB-18HRDN1
Cross
flow fan
Evaporator
Liquid valve A
Liquid valve B
Gas valve B
Gas valve A
EXVA
EXVB
Axial flow fan
Condenser
Compressor
4-way
valve
Auxiliary
Capillary
Capillary A
Capillary B
Exhaust
temp. sensor
Indoor pipe out
temp. seneor A
Indoor pipe out
temp. seneor B
Filter A
Filter B
Outdoor Unit
Main
Capillary
Check
ValveCoil temp.
sensor
M3OA-27HRDN1
Liquid valve A
Gas valve C
EXV C
4-way
valve
Compressor
Condenser
Axial flow fan
EXV B
EXV A
Gas valve A
Gas valve B
Liquid valve C
Liquid valve B
Evaporator
Cross
flow fan
Capillary A
Capillary B
Capillary C
Filter A
Filter B
Filter C
Main
Capillary
Auxiliary
Capillary
Check
Valve
Exhaust
temp. sensor
Indoor pipe out
temp. seneor B
Indoor pipe out
temp. seneor A
Indoor pipe out
temp. seneor C
Outdoor Unit
Coil temp.
sensor
M4OA-27HRDN1
Gas valve D
EXV4
Liquid valve D
Indoor Unit
Cross
flow fan
Evaporator
Liquid valve B
Liquid valve C
Gas valve B
Gas valve A
EXV1
EXV2
Axial flow fan
Condenser
Compressor
4-way
valve
EXV3
Gas valve C
Liquid valve A

Wiring Diagrams MCAC-HTSM-2007-11
94 Outdoor Units
6. Wiring Diagrams
M2OA-18HRDN1, M3OA-27HRDN1
M2OB-18HRDN1

MCAC-HTSM-2007-11 Wiring Diagrams
Outdoor Units 95
M4OA-27HRDN1

Combination capacity table MCAC-HTSM-2007-11
96 Outdoor Units
7. Combination capacity table
Cooling
Comb.
Combinations
Rated capacity(kW)
(Nom. cooling)
total cooling
capacity(kW)
total power input
(kW)
EER
(W/W)
ENERGY
2.05 — — — 1.03 2.05 3.08 0.25 0.64 0.83 3.21 A
2.64 — — — 1.03 2.64 3.56 0.35 0.81 1.08 3.27 A
3.52 — — — 1.48 3.52 4.71 0.47 1.11 1.52 3.16 B
2.05 2.05 — — 1.56 4.10 5.42 0.48 1.23 1.60 3.34 A
2.05 2.64 — — 1.78 4.69 6.24 0.56 1.43 1.93 3.29 A
2.04 3.50 — — 1.61 5.54 6.92 0.54 1.67 2.23 3.31 A
2.64 2.64 — — 1.95 5.28 6.23 0.59 1.59 2.01 3.32 A
2.37 3.17 — — 2.33 5.54 6.65 0.71 1.70 2.24 3.26 A
2.77 2.77 — — 1.94 5.54 6.48 0.68 1.80 2.35 3.08 B
2.05 — — — 0.86 2.05 2.91 0.25 0.63 0.89 3.24 A
2.64 — — — 1.06 2.64 3.48 0.34 0.81 1.06 3.27 A
3.52 — — — 1.13 3.52 4.75 0.38 1.09 1.48 3.21 A
2.05 2.05 — — 1.48 4.10 5.40 0.48 1.27 1.68 3.24 A
2.05 2.64 — — 1.59 4.69 6.21 0.52 1.44 1.92 3.26 A
2.05 3.52 — — 2.28 5.57 7.30 0.68 1.71 2.25 3.26 A
2.64 2.64 — — 1.69 5.28 6.96 0.55 1.62 2.22 3.25 A
2.64 3.52 — — 2.40 6.15 8.00 0.76 1.96 2.72 3.14 B
3.52 3.52 — — 2.74 7.03 9.14 0.86 2.21 2.94 3.19 B
2.05 2.05 2.05 — 1.78 6.15 7.58 0.63 1.92 2.43 3.21 A
2.05 2.05 2.64 — 2.56 6.74 9.03 0.79 2.04 2.76 3.31 A
2.05 2.05 3.52 — 2.67 7.62 10.17 0.89 2.36 3.16 3.23 A
2.04 2.62 3.49 — 3.10 8.15 10.11 0.87 2.53 3.42 3.22 A
2.05 2.64 2.64 — 2.42 7.33 9.82 0.78 2.27 3.06 3.23 A
1.84 3.16 3.16 — 2.77 8.15 10.60 0.93 2.59 3.63 3.14 B
2.64 2.64 2.64 — 2.77 7.91 10.40 0.83 2.42 3.25 3.27 A
2.45 2.45 3.26 — 3.18 8.15 11.09 1.05 2.63 3.58 3.10 B
2.05 — — — 0.84 2.05 2.67 0.24 0.63 0.88 3.24 A
2.64 — — — 1.01 2.64 3.43 0.30 0.77 1.06 3.41 A
3.52 — — — 1.29 3.52 4.57 0.44 1.01 1.36 3.47 A
— — — 2.00 5.28 6.86 0.60 1.63 2.16 3.25 A
2.05 2.05 — — 1.64 4.10 5.33 0.46 1.18 1.67 3.48 A
2.05 2.64 — — 1.78 4.69 6.10 0.56 1.41 1.86 3.32 A
2.05 3.52 — — 2.16 5.57 7.24 0.64 1.71 2.23 3.25 A
2.64 2.64 — — 2.06 5.28 6.86 0.63 1.61 2.16 3.27 A
2.64 3.52 — — 1.83 6.15 8.00 0.63 1.91 2.64 3.22 A
— — 2.64 7.03 9.14 0.82 2.18 3.04 3.22 A
— — 2.78 7.33 8.57 0.84 2.23 2.94 3.29 A
— — 2.90 7.91 10.29 1.02 2.48 3.35 3.19 B
— — 3.26 8.15 9.62 1.00 2.57 3.42 3.17 B
— 3.10 8.15 10.19 0.93 2.61 3.53 3.12 B

MCAC-HTSM-2007-11 Combination capacity table
Outdoor Units 97
Comb.
Combinations
Rated capacity(kW)
(Nom. cooling)
total cooling
capacity(kW)
total power input
(kW)
EER
(W/W)
ENERGY
2.04 2.04 2.04 2.04 2.70 8.15 10.35
1.90 1.90 1.90 2.45 2.84 8.15 10.27
1.73 1.73 1.73 2.96 3.04 8.15 10.76
1.46 1.46 1.46 3.76 3.61 8.15 10.92
1.78 1.78 2.29 2.29 3.05 8.15 11.00
1.63 1.63 2.10 2.79 3.19 8.15 11.17
1.50 1.50 2.57 2.57 3.32 8.15 11.17
1.68 2.16 2.16 2.16 3.17 8.15 11.09
1.54 1.98 1.98 2.64 3.35 8.15 11.25
1.43 1.83 2.45 2.45 3.71 8.15 11.17
2.04 2.04 2.04 2.04 3.36 8.15 10.76
1.88 1.88 1.88 2.51 3.50 8.15 11.00
Heating
Comb.
Combinations
Rated capacity(kW)
(Nom. heating)
total heating
capacity(kW)
total power input
(kW)
COP
(W/W)
ENERGY
2.49 — — — 1.00 2.49 3.24 0.26 0.68 0.88 3.69 A
3.08 — — — 1.08 3.08 4.09 0.34 0.82 1.10 3.74 A
3.96 — — — 1.50 3.96 4.99 0.46 1.09 1.52 3.62 A
2.49 2.49 — — 1.40 4.98 6.88 0.50 1.35 1.75 3.69 A
2.49 3.08 — — 1.84 5.57 6.63 0.58 1.49 2.00 3.75 A
2.45 3.88 — — 2.03 6.33 7.85 0.60 1.69 2.25 3.75 A
3.08 3.08 — — 2.34 6.15 8.25 0.60 1.63 2.08 3.77 A
2.77 3.56 — — 2.66 6.33 7.98 0.73 1.84 2.42 3.45 B
3.17 3.17 — — 2.28 6.33 8.42 0.75 2.00 2.67 3.17 C
2.49 — — — 0.95 2.49 3.16 0.27 0.67 0.94 3.72 A
3.08 — — — 1.08 3.08 4.22 0.35 0.84 1.10 3.65 A
3.96 — — — 1.50 3.96 5.30 0.37 1.07 1.44 3.71 A
2.49 2.49 — — 2.14 4.98 6.38 0.51 1.35 1.79 3.68 A
2.49 3.08 — — 2.12 5.57 7.41 0.55 1.53 2.04 3.63 A
2.49 3.96 — — 2.56 6.45 8.38 0.70 1.75 2.30 3.68 A
3.08 3.08 — — 2.34 6.15 8.00 0.56 1.65 2.26 3.72 A
3.08 3.96 — — 2.67 7.03 9.71 0.76 1.95 2.71 3.60 A
3.96 3.96 — — 2.72 7.91 10.29 0.86 2.21 2.94 3.58 B
2.49 2.49 2.49 — 2.84 7.47 9.27 0.67 2.04 2.59 3.66 A
2.49 2.49 3.08 — 2.95 8.06 10.80 0.86 2.20 2.98 3.67 A
2.49 2.49 3.96 — 3.19 8.94 11.62 0.93 2.47 3.31 3.62 A
2.42 2.98 3.83 — 3.51 9.23 12.28 0.86 2.51 3.39 3.68 A
2.49 3.08 3.08 — 3.19 8.65 11.24 0.83 2.42 3.26 3.58 B
2.20 3.52 3.52 — 3.60 9.23 12.19 0.92 2.56 3.59 3.60 A
3.08 3.08 3.08 — 3.32 9.23 12.37 0.88 2.54 3.41 3.64 A
2.81 2.81 3.61 — 3.14 9.23 12.09 1.05 2.62 3.56 3.53 B

Combination capacity table MCAC-HTSM-2007-11
98 Outdoor Units
Comb.
Combinations
Rated capacity(kW)
(Nom. heating)
total heating
capacity(kW)
total power input
(kW)
COP
(W/W)
ENERGY
2.49 — — — 0.97 2.49 3.29 0.25 0.66 0.92 3.77 A
3.08 — — — 1.48 3.08 4.00 0.32 0.81 1.11 3.79 A
3.96 — — — 1.70 3.96 5.28 0.46 1.07 1.44 3.69 A
6.01 — — — 2.22 6.01 7.81 0.58 1.59 2.11 3.78 A
2.49 2.49 — — 2.24 4.98 6.48 0.52 1.34 1.91 3.71 A
2.49 3.08 — — 1.84 5.57 7.60 0.61 1.52 2.00 3.67 A
2.49 3.96 — — 2.97 6.45 8.38 0.65 1.73 2.25 3.72 A
3.08 3.08 — — 2.34 6.15 8.00 0.64 1.64 2.20 3.75 A
3.08 3.96 — — 2.53 7.03 8.84 0.63 1.91 2.63 3.69 A
3.96 3.96 — — 2.61 7.91 10.56 0.78 2.07 2.88 3.82 A
5.98 2.48 — — 3.21 8.45 11.19 0.85 2.27 2.99 3.73 A
5.59 2.86 — — 3.21 8.45 10.97 0.94 2.29 3.09 3.69 A
5.10 3.36 — — 3.10 8.45 11.07 0.90 2.31 3.08 3.66 A
4.23 4.23 — — 3.28 8.45 11.16 0.83 2.32 3.13 3.64 A
2.49 2.49 2.49 — 2.64 7.47 9.90
2.49 2.49 3.08 — 2.77 8.06 10.67
2.36 2.36 3.74 — 2.83 8.45 11.36
1.92 1.92 4.62 — 3.42 8.45 12.77
1.82 2.25 4.39 — 2.84 8.45 11.40
2.21 2.73 3.51 — 2.88 8.45 12.09
2.44 3.01 3.01 — 3.35 8.45 12.11
2.02 3.22 3.22 — 2.95 8.45 12.18
1.69 2.68 4.08 — 3.48 8.45 12.31
2.82 2.82 2.82 — 2.91 8.45 12.21
2.57 2.57 3.31 — 2.99 8.45 12.25
2.14 2.14 4.17 — 3.49 8.45 12.43
2.37 3.04 3.04 — 3.18 8.45 12.24
2.00 2.56 3.89 — 3.78 8.45 12.28
2.82 2.82 2.82 — 3.35 8.45 11.88
2.11 2.11 2.11 2.11 2.98 8.45 11.83
3.67
A
7k 7k 7k 9k 2.00 2.00 2.00 2.46 3.11 8.45 11.87
3.65
A
7k 7k 7k 12k 1.84 1.84 1.84 2.93 3.33 8.45 11.89
3.68
A
7k 7k 7k 18k 1.56 1.56 1.56 3.77 3.93 8.45 12.13
3.62
A
7k 7k 9k 9k 1.89 1.89 2.34 2.34 3.27 8.45 12.09
3.71
A
7k 7k 9k 12k 1.75 1.75 2.17 2.78 3.48 8.45 12.31
3.68
A
7k 7k 12k 12k 1.63 1.63 2.59 2.59 3.85 8.45 12.22
3.63
A
7k 9k 9k 9k 1.80 2.22 2.22 2.22 3.46 8.45 12.24
3.65
A
7k 9k 9k 12k 1.67 2.06 2.06 2.66 3.65 8.45 12.19
3.50
B
7k 9k 12k 12k 1.57 1.93 2.48 2.48 4.09 8.45 12.38
3.61
A
9k 9k 9k 9k 2.11 2.11 2.11 2.11 3.61 8.45 12.41
3.55
B
9k 9k 9k 12k 1.97 1.97 1.97 2.54 3.77 8.45 12.28