Midea MDTA-120CRN2, MDTA-96CRN2, MDFA-76CRN2, MDFA-96CRN2, MOV-76C-CN2 User Manual
...
MCAC-UTSM-12
1
Content
Part 1 General Information ........................................... 1
Part 2 Indoor Units ........................................................ 4
Part 3 Outdoor Units ................................................... 50
Part 4 Installation ........................................................ 65
Part 1 General Information
1. Model Names of Indoor/Outdoor Units ............................. 1
2. External Appearance .......................................................... 2
3. Nomenclature ................................................................ ..... 3
1. Model Names of Indoor/Outdoor Units
1.1 Model Names of Units with Cooling only:
Type
Indoor unit
Outdoor unit
Capacity
Model
Power
supply
Model
Power
supply
kW
kBtu/h
Floor-standing
type
MDFA-76CRN2
220~240V-
1N-50Hz
MOV-76C-CN2
380~415V-
3N-50Hz
22
76
MDFA-96CRN2
MOV-96C-CN2
28
96
Mid-static
pressure duct
type
MDTA-76CRN2
MOV-76C-CN2
22
76
MDTA-96CRN2
MOV-96C-CN2
28
96
MDTA-120CRN2
MOV-120C-CN2
380~400V-
3N-50Hz
35
120
MCAC-UTSM-12
Type
Indoor unit
Capacity
Model
Power
supply
Model
Power
supply
kW
kBtu/h
Floor-standing
type
MDFA-76HRN2
220~240V-
1N-50Hz
MOV-76H-CN2
380~415V-
3N-50Hz
22
76
MDFA-96HRN2
MOV-96H-CN2
28
96
Mid-static
pressure duct
type
MDTA-76HRN2
MOV-76H-CN2
22
76
MDTA-96HRN2
MOV-96H-CN2
28
96
MDTA-120HRN2
MOV-120H-CN2
380~400V-
3N-50Hz
35
120
MDTA-76C(H)RN2
MDTA-96C(H)RN2
MDTA-120C(H)RN2
1.2 Model Names of Units with Cooling and heating:
2. External Appearance
2.1 Indoor Units
Outdoor unit
MDFA-76C(H)RN2
MDFA-96C(H)RN2
2
MCAC-UTSM-12
MDOV-76C(H)-CN2
MDOV-96C(H)-CN2
MD T A – 76 C R N2
N2：R407C；N1：R410a
R：Remote Controller
Function Code: C: Cooling
H: Cooling and Heating
Cooling Capacity (76 kBtu/h)
Product Series
A: 1st
time design
B: 2nd
time design
Indoor Units
T: Medium static pressure duct type
F: Floor-standing type
H: High static pressure duct type
MDV
2.2 Outdoor Unit
MDOV-120C(H)-CN2
3. Nomenclature
3.1 Indoor unit:
3
MD O V
76 C N2
3.2 Outdoor unit:
MCAC-UTSM-12
N2：R407C；
N1：R410a
Function Code：
C: Cooling Only
H: Heat pump
Cooling Capacity (76 kBtu/h)
Universal Outdoor Unit
Outdoor Unit
MDV
Part 2 Indoor Units
Duct Type ................................................................................ 4
Floor-standing Type ............................................................. 31
Duct Type
1. Features .............................................................................. 5
2. Specifications ..................................................................... 5
3. Dimensions ......................................................................... 8
4. Service Space ..................................................................... 9
5. Refrigerant cycle Diagrams ............................................. 11
6. Wiring Diagrams ............................................................... 11
7.Capacity Table ................................................................... 15
8. Static Pressure ................................................................. 21
9. Electric Characteristics ................................................... 22
10. Sound Levels .................................................................. 23
12. Troubleshooting.............................................................24
4
Model
MDTA-76HRN2
MDTA-96CRN2
MDTA-96HRN2
Code
220070900191
220070900181
220070900171
Power supply
- 220~240V-1N-50Hz
220~240V-1N-50Hz
Rated input power
W 11500
11500 14500
14700
Rated current
A 20 20 28 28.1
Cooling
Capacity
Btu/h 75,100
75,100
92,800
91,400
W 22000
22000 27200
26800
Input
W 7500
7500 9200
9200
EER W/W
2.93
2.93 2.96
2.91
Heating
Capacity
Btu/h
——
83600
——
109500
W
——
24500
——
32100
Input
W
——
7320
——
9800
COP W/W
——
3.35
——
3.28
Indoor air flow
m3/h(CFM)
4650(2700)
4650(2700)
5600(3300)
5600(3300)
Indoor external static pressure
Pa
100 100 100
Indoor noise level
dB(A)
54 55 55
Refrigerant
Type -
Control -
Capillary
Capillary
Capillary
Fan
Type -
Centrifugal fan
Centrifugal fan
Centrifugal fan
Fan model
-
SYZ9-9MD
SYZ9-9MD
SYZ9-9MD
Dimension
mm
Φ307 Φ307
Φ307
Drive type/ Motor
step
-
Direct/ Single
Direct/ Single
Direct/ Single
Motor model
-
YDK300-4X
YDK550-4X
YDK550-4X
Motor Input * No.
W
720*2
1015*2
1015*2
Motor speed
rpm 1040
1040 1300
1300
Coil
Type -
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Tube size
mm
Ф9.52
Ф9.52 Ф9.52
Ф9.52
No. of rows
- 4 4 4 4
Fin per inch
FPI 17 17 17 17
Length* height
mm 1200*406
1200*406
1200*406
1200*406
Controller -
Remote controller
Remote controller
Drain pipe size
mm
Ф41
Ф41 Ф41
Ф41
Connection
wiring
Power wiring
mm2
3*2.5
3*2.5 3*2.5
3*2.5
Signal wiring
mm2
2*1.0
4*1.0 2*1.0
4*1.0
Indoor unit
Dimension
(W*H*D)
mm 1350*450*760
1350*450*760
1350*450*760
1350*450*760
Packing
(W*H*D)
mm 1549*476*917
1549*476*917
1549*476*917
1549*476*917
Net/Gross weight
kg 105/120
105/120
105/120
105/120
2. Specifications
MCAC-UTSM-12
MDTA-76CRN2
220070900201
100
54
R407C
Capillary
Centrifugal fan
SYZ9-9MD
Φ307
R407C R407C R407C
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°CWB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
6
Direct/ Single
YDK300-4X
720*2
MCAC-UTSM-12
Model
MDTA-120HRN2
Code
220070900151
Power supply - 220~240V-1N-50Hz
Rated input power
W
18000
18000
Rated current A 28.7
28.7
Cooling
Capacity
Btu/h
116,000
116,000
W
34000
34000
Input
W
11900
11900
EER
W/W
2.86
2.86
Heating
Capacity
Btu/h
——
139900
W
——
41000
Input
W
——
12600
COP
W/W
——
3.25
Indoor air flow
m3/h
6800
6800
Indoor external static pressure
150
Indoor noise level
56
Refrigerant
Type
Control
Capillary
Fan
Type
Centrifugal fan
Fan model
SYZ9-9MD
Dimension
Φ307
Drive type/ Motor
step
Direct/ Single
Motor model
YDK300-4X
Motor Input * No.
720*3
Motor speed
rpm
1040/930/825
1040/930/825
Coil
Type
-
Copper tube and
aluminum fin
Copper tube and
aluminum fin
Tube size
mm
Ф7
Ф7
No. of rows - 4
4
Fin per inch
FPI
17
17
Length* height
mm
1602*588
1602*588
Controller
-
Remote controller
Drain pipe size
mm
Ф41
Ф41
Connection
wiring
Power wiring
mm2
3*2.5
3*2.5
Signal wiring
mm2
2*1.0
4*1.0
Indoor unit
Dimension
(W*H*D)
mm
1828*638*858
1828*638*858
Packing
(W*H*D)
mm
2095*689*929
2095*689*929
Net/Gross weight
kg
188/220
188/220
MDTA-120CRN2
220070900161
Pa 150
dB(A) 56
-
- Capillary
- Centrifugal fan
- SYZ9-9MD
mm Φ307
R407C R407C
- Direct/ Single
- YDK300-4X
W 720*3
Notes:
1. ESP: external static pressure
2. Nominal cooling capacities are based on the following conditions:
Indoor temp: 27°CDB, 19°CWB; Outdoor temp: 35°CDB, 24°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°CWB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
7
MCAC-UTSM-12
3. Dimensions
3.1 MDTA-76C(H)RN2, MDTA-96C(H)RN2
8
MCAC-UTSM-12
3.2 MDTA-120C(H)RN2
9
4. Service Space
MCAC-UTSM-12
m
m
0
0
5
≥
Electric control box
Inspection hole
m
m
0
0
6
≥
Top view Side view
10
ir outlet
Muffle
Canvas adapter
Inspection
Air duct system
hole
Air inlet
Air filter
Muffle
MCAC-UTSM-12
5. Refrigerant cycle diagrams
5.1 Cooling only: MDTA-76CRN2, MDTA-96CRN2, MDTA-120CRN2
Cooling
Outdoor heat-exchanger
HP Switch
Discharge temp. sensor
Compressors
LP Switch
Liquid-gas seperator
T3
Stop valve
5.3 Cooling and heating: MDTA-76HRN2, MDTA-96HRN2, MDTA-120HRN2
Stop valve
Indoor unit
Capillary
Indoor
heat-exchanger
T2
T4
Cooling
Heating
Outdoor heat-exchanger
HP Switch
4-way valve
Discharge temp. sensor
Compressors
LP Switch
Liquid-gas seperator
T3
Check valve
Stop valve
Capillary
Indoor unit
Indoor
heat-exchanger
Stop valve
T2
T4
11
MCAC-UTSM-12
6. Wiring Diagrams
6.1 MDTA-76CRN2, MDTA-96CRN2
12
MCAC-UTSM-12
6.2 MDTA-76HRN2, MDTA-96HN2
6.3 MDTA-120CRN2
13
6.4 MDTA-120HRN2
MCAC-UTSM-12
14
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
29.40
35.00
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
2200
23.90
19.2
15.0
7.13
21.7
12.2
7.33
23.0
5.3
7.46
18.4
15.1
7.56
20.5
11.6
7.79
21.8
5.0
7.93
26.70
19.9
17.2
7.15
7.48
18.8
17.1
7.58
20.9
13.5
7.81
22.2
9.6
29.40
20.6
18.7
7.17
7.5
19.2
18.4
7.6
21.3
17.5
7.83
22.6
13.5
32.20
21.3
20.9
7.19
7.52
19.6
19.2
7.62
21.7
19.8
7.85
23.1
17.0
2500
23.90
20.3
16.2
7.33
7.66
19.4
16.3
7.76
21.1
12.2
7.99
22.4
5.3
26.70
21.0
18.3
7.35
7.68
19.8
18.3
7.78
21.5
15.3
8.01
22.8
10.0
29.40
21.7
20.1
7.37
7.7
20.2
19.8
7.8
21.9
18.4
8.03
23.3
14.2
32.20
22.5
21.4
7.39
23.6
21.9
7.59
25.1
18.7
7.72
20.6
20.6
7.82
22.4
20.7
8.05
23.7
17.7
8.19
2700
23.90
20.8
18.1
7.57
22.8
14.2
7.9
24.1
6.3
7.9
19.9
18.3
8
21.6
13.5
8.23
22.8
5.9
8.37
26.70
21.5
20.5
7.59
23.2
17.9
7.79
24.6
11.8
7.92
20.3
20.3
8.02
22.0
16.9
8.25
23.3
11.2
8.39
29.40
22.3
21.6
7.61
23.7
21.7
7.81
25.1
16.6
7.94
20.7
20.7
8.04
22.4
20.6
8.27
23.8
15.7
8.41
32.20
23.0
22.6
7.63
24.1
21.9
7.83
25.6
20.8
7.96
21.1
21.1
8.06
22.9
20.8
8.29
24.2
19.7
8.43
3000
23.90
21.3
18.8
7.88
23.2
13.9
8.08
24.6
6.0
8.21
20.7
18.3
8.31
22.1
13.2
8.54
23.3
5.7
8.68
26.70
22.0
21.2
7.9
23.7
17.4
8.1
25.1
11.4
8.23
21.1
20.3
8.33
22.5
16.5
8.56
23.8
10.8
8.7
29.40
22.8
22.1
7.92
24.2
21.0
8.12
25.6
16.2
8.25
21.5
21.5
8.35
23.0
20.0
8.58
24.3
15.4
8.72
32.20
23.6
23.1
7.94
24.7
23.7
8.14
26.1
20.2
8.27
22.0
22.0
8.37
23.4
22.5
8.6
24.8
19.2
8.74
7. Capacity Table
7.1 76 kBtu/h
22.1 14.3 7.35 23.5 10.1
22.5 18.5 7.37 24.0 14.3
23.0 20.9 7.39 24.4 18.0
22.3 12.9 7.53 23.6 5.6
22.7 16.1 7.55 24.1 10.6
23.2 19.5 7.57 24.6 15.0
7.95
7.97
7.99
8.13
8.15
8.17
15
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
40.60
46.10
51.70
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
2200
23.9
18.41
15.09
8.49
19.98
11.29
8.73
21.25
4.91
8.88
16.9
13.9
8.68
18.4
10.4
8.94
19.6
4.5
9.19
16.1
13.2
10.67
17.3
9.8
11.03
18.4
4.3
11.28
26.7
18.78
17.07
8.51
20.38
13.2
8.75
21.68
9.34
8.9
17.3
15.7
8.7
18.8
12.2
8.96
20.0
8.6
9.21
16.4
14.9
10.7
17.7
11.5
11.06
18.8
8.1
11.31
29.4
19.16
18.42
8.53
20.79
17.04
8.77
22.11
13.16
8.92
17.6
17.0
8.72
19.2
15.7
8.98
20.4
12.1
9.23
16.7
16.1
10.73
18.0
14.8
11.09
19.2
11.4
11.34
32.2
19.54
19.16
8.55
21.2
19.28
8.79
17.8
9
20.8
15.3
9.26
17.0
16.7
10.75
18.4
16.7
11.12
19.5
2500
23.9
19.02
15.98
8.69
20.59
11.9
8.93
11.0
9.14
20.2
4.8
9.39
16.7
14.0
10.87
17.9
10.4
11.23
19.0
26.7
19.4
17.96
8.71
21
14.89
8.95
13.8
9.16
20.6
9.0
9.41
17.0
15.7
10.9
18.3
13.0
11.26
19.4
29.4
19.79
19.4
8.73
21.42
18
8.97
16.6
9.18
21.0
12.8
9.43
17.3
17.0
10.93
18.7
15.7
11.29
19.8
32.2
20.18
20.18
8.75
21.85
20.23
8.99
18.7
9.21
21.4
16.0
9.46
17.7
17.7
10.95
19.0
17.6
11.32
20.2
2700
23.9
19.51
17.9
8.39
21.08
13.17
8.78
12.2
9.38
20.7
5.4
9.63
17.2
15.7
11.11
18.4
11.5
11.47
19.5
26.7
19.9
19.9
8.41
21.5
16.54
8.65
15.3
9.4
21.1
10.1
9.65
17.5
17.5
11.14
18.8
14.5
11.5
19.9
29.4
20.3
20.3
8.43
21.93
20.12
8.67
23.26
15.4
8.82
18.8
18.8
9.16
20.3
18.6
9.42
21.5
14.3
9.67
17.9
17.9
11.17
19.2
17.6
11.53
20.3
13.4
11.78
32.2
20.7
20.7
8.45
22.37
20.34
8.69
23.72
19.29
8.84
19.1
19.1
9.19
20.7
18.8
9.45
22.0
17.9
9.7
18.2
18.2
11.2
19.6
17.8
11.56
20.7
16.8
11.81
3000
23.9
20
17.7
9.24
21.57
12.92
9.48
22.84
5.6
9.63
18.5
16.4
9.43
20.0
12.0
9.69
21.2
5.2
9.94
17.7
15.6
11.42
18.9
11.3
11.78
20.0
4.9
12.03
26.7
20.4
19.62
9.26
22
16.18
9.5
23.3
10.59
9.65
18.9
18.2
9.45
20.4
15.0
9.71
21.6
9.8
9.96
18.0
17.3
11.45
19.3
14.2
11.81
20.4
9.3
12.06
29.4
20.81
20.81
9.28
22.44
19.51
9.52
23.77
15.04
9.67
19.3
19.3
9.47
20.8
18.1
9.73
22.0
13.9
9.98
18.4
18.4
11.48
19.7
17.1
11.84
20.8
13.2
12.09
32.2
21.22
21.22
9.31
22.89
22.01
9.55
24.24
18.79
9.7
19.7
19.7
9.5
21.2
20.4
9.76
22.5
17.4
10.01
18.7
18.7
11.51
20.1
19.3
11.87
21.2
16.5
12.12
22.56 16.59 8.94 18.0 17.6 8.74 19.5
21.86 5.16 9.08 17.6 14.8 8.88 19.0
22.3 9.78 9.1 17.9 16.6 8.9 19.4
22.75 13.87 9.12 18.3 17.9 8.92 19.8
23.2 17.31 9.15 18.6 18.6 8.94 20.2
22.35 5.79 8.78 18.0 16.6 9.12 19.5
22.8 10.91 8.8 18.4 18.4 9.14 19.9
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
4. TGC = Total Cooling Capacity (kW)
5. SHC = Sensible Heating Capacity (kW)
6. PI = Power Input (kW)
14.4 11.37
4.5 11.48
8.5 11.51
12.1 11.54
15.1 11.57
5.1 11.72
9.5 11.75
16
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
29.40
35.00
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
2700
23.9
24.3
19.0
9.38
26.8
15.1
9.58
28.1
6.5
9.71
23.5
19.3
9.81
25.6
14.5
10.03
26.8
6.2
10.17
26.7
25.1
21.6
9.4
27.3
17.7
9.6
28.7
12.4
9.73
24.0
21.8
9.83
26.1
16.9
10.06
27.4
11.8
10.2
29.4
26.0
23.6
9.42
27.8
22.8
9.62
29.3
17.4
9.75
24.5
23.5
9.85
26.6
21.8
10.09
27.9
16.6
10.23
32.2
26.9
26.4
9.45
9.78
25.0
24.5
9.88
27.1
24.7
10.11
28.5
21.0
3000
23.9
25.3
20.3
9.58
9.91
24.5
20.6
10
26.2
15.1
10.23
27.5
6.5
26.7
26.2
22.8
9.6
9.93
25.0
23.2
10.03
26.7
18.9
10.26
28.0
12.3
29.4
27.1
25.1
9.62
9.95
25.5
25.0
10.06
27.2
22.9
10.29
28.6
17.4
32.2
28.1
26.7
9.65
9.98
26.0
26.0
10.08
27.8
25.7
10.31
29.1
21.7
3260
23.9
25.8
22.4
9.82
10.14
25.0
22.9
10.24
26.7
16.7
10.47
27.9
7.2
26.7
26.7
25.4
9.84
28.4
21.9
10.04
29.8
14.3
10.17
25.5
25.5
10.27
27.2
20.9
10.5
28.5
13.6
10.64
29.4
27.6
26.8
9.86
29.0
26.6
10.07
30.4
20.1
10.2
26.0
26.0
10.3
27.7
25.5
10.53
29.1
19.3
10.67
32.2
28.6
28.0
9.89
29.6
26.9
10.09
31.0
25.2
10.22
26.5
26.5
10.32
28.3
25.7
10.55
29.7
24.1
10.69
3500
23.9
26.3
23.3
10.12
28.3
17.0
10.32
29.7
7.3
10.45
25.8
22.8
10.55
27.2
16.3
10.78
28.4
7.0
10.92
26.7
27.2
26.2
10.15
28.9
21.3
10.35
30.3
13.8
10.48
26.3
25.3
10.58
27.7
20.4
10.81
29.0
13.2
10.95
29.4
28.2
27.3
10.18
29.5
25.6
10.38
30.9
19.6
10.51
26.8
26.8
10.61
28.3
24.6
10.84
29.6
18.7
10.98
32.2
29.1
28.6
10.2
30.1
28.9
10.4
31.5
24.4
10.53
27.4
27.4
10.63
28.8
27.7
10.86
30.2
23.4
11
7.1 96 kBtu/h
28.4 25.8 9.65 29.8 21.9
27.4 15.8 9.78 28.7 6.8
27.9 19.8 9.8 29.3 12.9
28.5 23.9 9.82 29.9 18.2
29.0 26.9 9.85 30.5 22.8
27.8 17.4 10.14 29.2 7.6
10.25
10.37
10.4
10.43
10.45
10.61
17
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
40.60
46.10
51.70
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
2700
23.9
23.8
19.5
10.85
25.4
14.3
11.09
26.7
6.2
11.24
22.3
18.3
11.04
23.8
13.5
11.3
25.0
5.8
11.55
19.6
16.1
12.37
20.9
11.8
12.73
21.9
5.1
12.98
26.7
24.3
22.1
10.88
25.9
16.8
11.12
27.2
11.7
11.27
22.8
20.7
11.07
24.3
15.7
11.33
25.5
11.0
11.58
20.0
18.2
12.4
21.3
13.8
12.76
22.4
9.7
13.01
29.4
24.8
23.8
10.91
26.4
21.6
11.15
27.7
16.5
11.3
23.2
22.3
11.1
24.8
20.3
11.36
26.0
15.5
11.61
20.4
19.6
12.43
21.7
17.8
12.79
22.8
13.6
13.04
32.2
25.3
24.8
10.93
26.9
24.5
11.18
28.3
20.8
11.33
23.7
23.2
11.13
25.3
23.0
11.39
26.5
19.5
11.64
20.8
20.4
12.46
22.1
20.1
12.82
23.3
17.1
13.08
3000
23.9
24.4
20.5
11.05
26.0
15.0
11.29
14.1
11.5
25.6
6.0
11.75
20.2
17.0
12.57
21.5
12.4
12.93
22.6
26.7
24.9
23.1
11.08
26.5
18.8
11.32
17.7
11.53
26.1
11.5
11.78
20.6
19.1
12.6
21.9
15.5
12.96
23.0
29.4
25.4
24.9
11.11
27.0
22.7
11.35
21.3
11.56
26.6
16.2
11.81
21.0
20.6
12.63
22.3
18.8
12.99
23.5
32.2
25.9
25.9
11.14
27.6
25.5
11.38
24.0
11.59
27.2
20.3
11.84
21.4
21.4
12.66
22.8
21.1
13.02
23.9
3260
23.9
24.9
22.9
11.29
26.5
16.5
11.68
15.6
11.74
26.1
6.8
11.99
20.7
19.0
12.81
22.0
13.7
13.17
23.0
26.7
25.4
25.4
11.32
27.0
20.8
11.56
19.5
11.77
26.6
12.7
12.02
21.1
21.1
12.84
22.4
17.2
13.2
23.5
29.4
25.9
25.9
11.35
27.5
25.3
11.59
28.9
19.1
11.74
24.4
24.4
11.54
25.9
23.8
11.8
27.1
18.0
12.05
21.5
21.5
12.87
22.9
21.0
13.23
24.0
15.9
13.48
32.2
26.4
26.4
11.38
28.1
25.5
11.62
29.4
23.9
11.77
24.9
24.9
11.57
26.4
24.0
11.83
27.7
22.5
12.08
22.0
22.0
12.9
23.3
21.2
13.27
24.5
19.9
13.52
3500
23.9
25.4
22.5
11.6
27.0
16.1
11.84
28.2
6.9
11.99
23.9
21.2
11.79
25.4
15.2
12.05
26.6
6.5
12.3
21.2
18.7
13.12
22.5
13.4
13.48
23.5
5.8
13.73
26.7
25.9
24.9
11.63
27.5
20.2
11.87
28.8
13.1
12.02
24.4
23.5
11.82
25.9
19.0
12.08
27.1
12.3
12.33
21.6
20.8
13.15
22.9
16.8
13.51
24.0
10.9
13.76
29.4
26.4
26.4
11.66
28.1
24.4
11.9
29.4
18.6
12.05
24.9
24.9
11.85
26.4
23.0
12.11
27.6
17.5
12.36
22.0
22.0
13.18
23.4
20.3
13.54
24.5
15.5
13.79
32.2
27.0
27.0
11.69
28.6
27.5
11.93
30.0
23.2
12.08
25.4
25.4
11.88
27.0
25.9
12.14
28.2
21.9
12.39
22.5
22.5
13.22
23.8
22.9
13.58
25.0
19.4
13.83
27.3 6.4 11.44 22.9 19.3 11.24 24.4
27.8 12.2 11.47 23.4 21.7 11.27 24.9
28.4 17.3 11.5 23.9 23.4 11.3 25.4
28.9 21.6 11.53 24.4 24.4 11.33 25.9
27.8 7.2 11.68 23.4 21.5 11.48 24.9
28.3 13.5 11.71 23.9 23.9 11.51 25.4
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
4. TGC = Total Cooling Capacity (kW)
5. SHC = Sensible Heating Capacity (kW)
6. PI = Power Input (kW)
18
5.3 13.18
10.1 13.21
14.3 13.24
17.9 13.28
6.0 13.42
11.2 13.45
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
29.40
35.00
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
3300
23.9
30.8
24.1
11.97
33.4
18.9
12.17
34.8
8.0
12.3
30.2
24.8
12.4
32.2
18.2
12.63
33.5
7.7
12.77
26.7
31.9
27.5
12
34.1
22.1
12.2
35.5
15.3
12.33
30.8
28.0
12.43
32.9
21.3
12.66
34.2
14.7
12.8
29.4
33.0
30.0
12.03
34.8
28.5
12.23
36.2
21.5
12.36
31.4
30.2
12.46
33.5
27.5
12.69
34.9
20.8
12.83
32.2
34.2
33.5
12.06
12.39
32.0
31.4
12.49
34.2
31.1
12.72
35.6
26.2
3700
23.9
31.9
25.5
12.17
12.5
31.2
26.2
12.6
32.8
19.0
12.83
34.1
8.1
26.7
33.0
28.7
12.2
12.53
31.8
29.4
12.63
33.5
23.8
12.86
34.8
15.3
29.4
34.2
31.6
12.23
12.56
32.4
31.8
12.66
34.2
28.7
12.89
35.5
21.6
32.2
35.4
33.7
12.26
12.59
33.1
33.1
12.69
34.9
32.3
12.92
36.2
27.0
4000
23.9
32.4
28.2
12.41
12.74
31.7
29.1
12.84
33.3
20.8
13.07
34.6
9.0
26.7
33.5
31.9
12.44
35.2
27.1
12.64
36.6
17.5
12.77
32.3
32.3
12.87
34.0
26.2
13.1
35.3
16.9
13.24
29.4
34.7
33.7
12.47
35.9
32.9
12.67
37.3
24.7
12.8
33.0
33.0
12.9
34.7
31.8
13.13
36.0
23.9
13.27
32.2
35.9
35.2
12.5
36.6
33.3
12.7
38.1
31.0
12.83
33.6
33.6
12.93
35.4
32.2
13.17
36.7
29.9
13.31
4500
23.9
32.9
29.1
12.72
35.0
21.0
12.92
36.4
8.9
13.05
32.5
28.7
13.15
33.8
20.3
13.38
35.1
8.6
13.52
26.7
34.0
32.7
12.75
35.7
26.3
12.95
37.1
16.9
13.08
33.1
31.8
13.18
34.5
25.4
13.41
35.8
16.3
13.55
29.4
35.2
34.2
12.78
36.4
31.7
12.98
37.8
24.0
13.11
33.8
33.8
13.21
35.2
30.6
13.44
36.5
23.1
13.58
32.2
36.4
35.7
12.81
37.1
35.7
13.01
38.6
29.9
13.15
34.4
34.4
13.25
35.9
34.5
13.48
37.3
28.9
13.62
7.3 120 kBtu/h
35.5 32.2 12.26 36.9 27.1
34.0 19.7 12.37 35.4 8.4
34.7 24.6 12.4 36.1 15.8
35.4 29.7 12.43 36.8 22.5
36.1 33.4 12.46 37.6 28.0
34.5 21.6 12.74 35.9 9.3
12.86
12.97
13
13.03
13.07
13.21
19
MCAC-UTSM-12
Gross Cooling Capacity (kW)
Outdoor DB(°C)
40.60
46.10
51.70
Indoor
WB(°C)
16.10
19.40
22.80
16.10
19.40
22.80
16.10
19.40
22.80
CFM
DB(°C)
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
TGC
SHC
PI
3300
23.9
29.8
24.4
14.37
31.4
17.7
14.61
32.6
7.5
14.76
28.3
23.2
14.56
29.8
16.8
14.82
31.0
7.2
15.07
29.5
24.2
16.36
30.8
17.4
16.72
31.8
7.4
16.97
26.7
30.4
27.6
14.41
32.0
20.7
14.65
33.3
14.3
14.8
28.9
26.3
14.6
30.4
19.7
14.86
31.6
13.6
15.11
30.1
27.4
16.4
31.4
20.3
16.76
32.5
14.0
17.01
29.4
31.0
29.8
14.45
32.6
26.7
14.69
34.0
20.2
14.84
29.5
28.3
14.64
31.0
25.4
14.9
32.2
19.2
15.15
30.7
29.5
16.44
32.0
26.2
16.8
33.1
19.7
17.05
32.2
31.6
31.0
14.48
33.3
30.3
14.72
34.6
25.5
14.87
30.1
29.5
14.67
31.6
28.7
14.93
32.9
24.2
15.19
31.3
30.7
16.48
32.7
29.7
16.84
33.8
24.9
17.1
3700
23.9
30.4
25.5
14.57
32.0
18.5
14.81
30.4
17.6
15.02
31.6
7.5
15.27
30.1
25.3
16.56
31.4
18.1
16.92
32.5
26.7
31.0
28.7
14.61
32.6
23.1
14.85
31.0
22.0
15.06
32.2
14.1
15.31
30.7
28.4
16.6
32.0
22.7
16.96
33.1
29.4
31.6
31.0
14.65
33.3
27.9
14.89
31.6
26.6
15.1
32.8
20.0
15.35
31.3
30.7
16.64
32.6
27.4
17
33.8
32.2
32.3
32.3
14.68
33.9
31.4
14.92
32.3
29.9
15.14
33.5
25.0
15.39
31.9
31.9
16.68
33.3
30.8
17.04
34.4
4000
23.9
30.9
28.3
14.27
32.5
20.3
14.66
30.9
19.3
15.26
32.1
8.3
15.51
30.6
28.1
16.8
31.9
19.9
17.16
32.9
26.7
31.5
31.5
14.31
33.1
25.5
14.55
31.5
24.2
15.3
32.7
15.7
15.55
31.2
31.2
16.84
32.5
25.0
17.2
33.6
29.4
32.1
32.1
14.35
33.8
31.0
14.59
35.1
23.2
14.74
30.6
30.6
15.08
32.1
29.5
15.34
33.4
22.1
15.59
31.8
31.8
16.88
33.2
30.4
17.24
34.3
22.7
17.49
32.2
32.8
32.8
14.38
34.4
31.3
14.62
35.8
29.1
14.77
31.2
31.2
15.12
32.8
29.8
15.38
34.0
27.7
15.63
32.5
32.5
16.92
33.8
30.7
17.29
35.0
28.4
17.54
4500
23.9
31.4
27.8
15.12
32.9
19.7
15.36
34.2
8.4
15.51
29.9
26.5
15.31
31.4
18.8
15.57
32.6
8.0
15.82
31.1
27.5
17.11
32.4
19.4
17.47
33.4
8.2
17.72
26.7
32.0
30.8
15.16
33.6
24.7
15.4
34.9
15.9
15.55
30.5
29.3
15.35
32.0
23.5
15.61
33.2
15.1
15.86
31.7
30.5
17.15
33.0
24.3
17.51
34.1
15.5
17.76
29.4
32.6
32.6
15.2
34.3
29.8
15.44
35.6
22.5
15.59
31.1
31.1
15.39
32.6
28.4
15.65
33.9
21.4
15.9
32.3
32.3
17.19
33.7
29.3
17.55
34.8
22.0
17.8
32.2
33.3
33.3
15.24
35.0
33.6
15.48
36.3
28.2
15.63
31.7
31.7
15.43
33.3
32.0
15.69
34.5
26.8
15.94
33.0
33.0
17.24
34.3
33.0
17.6
35.5
27.5
17.85
33.2 7.8 14.96 28.9 24.3 14.76
33.9 14.9 15 29.5 27.3 14.8
34.6 21.1 15.04 30.1 29.5 14.84
35.3 26.3 15.08 30.7 30.7 14.87
33.7 8.7 14.66 29.4 27.0 15
34.4 16.5 14.7 30.0 30.0 15.04
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
4. TGC = Total Cooling Capacity (kW)
5. SHC = Sensible Heating Capacity (kW)
6. PI = Power Input (kW)
20
7.7 17.17
14.5 17.21
20.6 17.25
25.7 17.3
8.5 17.41
16.1 17.45
MCAC-UTSM-12
8. Air flow rate- Static pressure curve
8.1 76kBtu/h
8.2 96kBtu/h
200
180
160
140
120
100
Static Pressure (Pa)
Low
80
60
40
20
0
3250 3500 3750 4000 4250 4500 4750 5000
Medium
High
AirFlow (m3/h)
5250 5500
8.3 120kBtu/h
200
180
160
140
120
100
Static Pressure (Pa)
Low
80
60
40
20
0
3800 4050 4300 4550 4800 5050 5300 5550 5800 6050 6300
Medium
High
AirFlow (m3/h)
200
180
160
140
120
100
80
60
40
Static Pressure (Pa)
20
0
5000 5300 5600 5900 6200 6500 6800 7100 7400 7700 8000
Low
Medium
High
Air Flow (m3/h)
21
MCAC-UTSM-12
Model
Indoor Unit
Power Supply
IFM
Hz Voltage
MCA
MFA kW FLA
MDTA-76CRN2
50 220-240
10
8
1.42
6.66
MDTA-76HRN2
50 220-240
10
8
1.42
6.66
MDTA-96CRN2
50 220-240
10
12
1.8 8.6
MDTA-96HRN2
50 220-240
10
12
1.8 8.6
MDTA-120CRN2
50 220-240
11.25
20
2.1 10
MDTA-120HRN2
50 220-240
198 254 11.25
20
2.1 10
Model
Outdoor Unit
Power Supply
Compressor
OFM
Hz Voltage
Min.
Max. MCA
TOCA MFA
MSC RLA KW FLA MDOV-76C-CN2
50 380-415
342 438 15.75
18.5 21.85
48*2 6.3*2
0.573
2.613
MDOV-76H-CN2
50 380-415
342 438 15.75
18.5 21.85
48*2 6.3*2
0.573
2.613
MDOV-96C-CN2
50 380-415
342 438 20 28 30 53*2 8.0*2 0.573
2.613
MDOV-96H-CN2
50 380-415
342 438 20 28 30 53*2 8.0*2 0.573
2.613
MDOV-120C-CN2
50 380-415
342 438 22.75
28.7 32.55
57*2 9.1*2 1.2
5.857
MDOV-120H-CN2
50 380-415
342 438 22.75
28.7 32.55
57*2 9.1*2 1.2
5.857
9. Electric Characteristics
Note:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
IFM: Indoor Fan Motor
kW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
Min.
198
198
198
198
198
Max.
254
254
254
254
254
Note:
MCA: Min. Current Amps. (A) TOCA: Total Over-current Amps. (A)
MFA: Max. Fuse Amps. (A) MSC: Max. Starting Amps. (A)
RLA: Rated Locked Amps. (A) OFM: Outdoor Fan Motor
KW: Rated Motor Output (KW) FLA: Full Load Amps. (A)
22
MCAC-UTSM-12
Unit Number
Model
Noise level under three speeds of fan (dB(A))
1
MDTA-76C(H)RN2
54
2
MDTA-96C(H)RN2
55
3
MDTA-120C(H)RN2
56
10. Sound Levels
Concealed Duct Type
Discharge
Duct
Suction
1.4m
Microphone
23
MCAC-UTSM-12
f
Type
ALARM
Light
Remarks
Room temp. sensor error
- Manual reset
Evaporator temp. sensor error
☆
- - - Manual reset
Condenser temp. sensor error
- -
☆
- Manual reset
Water pump temp. sensor error
☆
- -
☆
Manual reset
The PRO terminal on PCB of
indoor unit without connected to
grounding wire
☆ ☆ ☆ ☆
Manual reset
EEPROM error
☆ ☆
- - Manual reset
Condensing water level full error
- - -
☆
Manual reset
12. Troubleshooting
rared signal receiver
In
Manual Switch
Operation lamp
Timer lamp
PRE-DEF lamp(cooling and heating type)
or fan only lamp(cooling only type)
OPT.
Light
-
TME.
Light
☆
Note:
OPT. Light: operation light; TME. Light: timer light;
DEF. Light: defrosting light; ☆: the light flashing.
Alarm lamp
DEF.
Light
-
13.1 Malfunctions of air conditioner
If any of the following malfunctions occur, stop operation of the air conditioner immediately. Turn off the power
switch, and contact the local after sales service center of manufacturer:
The RUN lamp flashes quickly (2 flash per second).
After turning off the power switch and then turning it on again, the RUN lamp still flashes quickly.
The receiving function of the remote controller fails, or the start/ shutdown operation is abnormal.
The fuse blows out frequently, or the circuit breaker protection occurs frequently.
Obstacles or water enter the air conditioner.
Condensing water leaks from indoor unit.
Other malfunctions occur.
24
MCAC-UTSM-12
Symptoms
Causes
Handling methods
The unit does not
work
Power supply fails.
Operate after power resumes.
Power switch is not connected.
Connect the power supply properly.
Fuse blows out or circuit breaker snaps off.
Replace the fuse or check whether
electric leakage occurs.
The remote controller or the wire controller
fails.
Check the remote controller or wire
controller.
Air flowing
normally but
completely can’t
cooling
Temperature setting is improper.
Temperature setting is higher than the
room temperature in cooling mode. Or
temperature setting is lower than the
room temperature in heating mode.
3-minute protection of compressor.
Waiting for 3 minutes.
The unit starts or
stops frequently
The system is lack of refrigerant. Or there is
too much refrigerant in the system.
Fix the leakage places, and charge the
proper quantity of refrigerant.
Air or non-condensable gas exists in the
refrigerant system.
Vacuum the system and charge
refrigerant again.
Compressor fails.
Repair or replace the compressor.
The voltage is too high or too low.
Install a voltage regulator.
The refrigerant pipe is obstructed.
Locate and replace that part.
Poor cooling effect
The heat exchanger of outdoor unit or indoor
unit is too dirty.
Clean the heat exchanger.
The filter is too dirty.
Clean the filter.
Air inlet or air outlet of the indoor/ outdoor
unit is blocked.
Remove obstacles to keep well
ventilating.
Doors or windows of the room are open.
Close all the windows and doors.
Directly exposed to sunlight.
Use curtain to obstruct sunlight.
Too many heat sources in the room.
Reduce the heat sources.
The outdoor ambient temperature is too
high.
The cooling effect is poor but normal.
The system is lack of refrigerant.
Fix the leakage places, and charge the
proper quantity of refrigerant.
Poor heating
effect
The outdoor ambient temperature is lower
than -7℃.
Use an assistance heating device.
If the air conditioner fails and does not meet the above phenomena, check the system as the following table:
25
Doors or windows of the room are not closed
tightly.
Close the doors and windows properly.
The system is lack of refrigerant.
Fix the leakage places, and charge the
proper quantity of refrigerant.
Symptoms
Causes
Handling methods
The fan speed
cannot be
changed
Check whether the mode marked on the
screen is “AUTO”.
When the “AUTO” mode is selected, the
unit will change the fan speed
automatically.
Check whether the mode marked on the
screen is “DEWET”.
When the “DEWET” mode is selected,
the unit will change the fan speed
automatically. The fan speed can be
selected in “COOLING”,”HEATING”
and ”SUPPLY AIR” mode.
The “ON/OFF”
button of remote
controller do not
work
Check whether the batteries of remote
controller are exhausted.
Replace the batteries.
The “ON/OFF”
lamp extinguishes
Check whether the time set on the timer has
expired.
Restart the unit.
The “TIMER ON”
lamp extinguishes
Check whether the time set on the timer has
expired.
It comes to the setting time and the unit
stat running automatically.
No receiving
sounds from the
indoor unit even
when the
“ON/OFF” button
is pressed
Check whether the signal transmitter of the
remote controller is properly directed to the
infrared signal receiver of the indoor unit
when the “ON/OFF” button is pressed.
Directly transmit the signal transmitter of
the remote controller to the infrared
signal receiver of the indoor unit, and
then push the “ON/OFF” button twice.
The buttons of the
remote controller
do not work
Check whether the settings are locked.
Push the “LOCK” button again.
MCAC-UTSM-12
26
MCAC-UTSM-12
No
No
Yes
All lamps flashing at 5Hz
Judge 1: The PRO terminal on PCB of indoor unit without connecting to grounding wire
Validate: Check whether the PRO terminal on PCB of indoor
unit without connected to grounding wire.
Connect it to grounding wire.
Judge 2: Optical coupler on PCB malfunction
Validate: Check whether the Optical coupler is normal.
Replace optical coupler
Replace indoor PCB.
Operation lamp flashes:
Yes
27
MCAC-UTSM-12
Timer lamp flashing at 5Hz
Room temperature sensor malfunction
Judge 1: Check the room temperature sensor
Is break off.
Connects it well.
Judge 2: Check the room temperature sensor
is abnormal.
Validate: Check whether the resistance of the
temperature sensor is correct according to Annex 1.
Replace temperature sensor
Replace indoor PCB.
No
Yes
No
Operation lamp flashes:
Yes
28
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