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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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Content
Part 1 General Information ........................................... 2
Part 2 Indoor Units ........................................................ 6
Part 3 Outdoor Units ................................................... 91
Part 4 Installation ...................................................... 119
Part 5 Control ............................................................ 151
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Part 1 General Information
1. Model Names of Indoor/Outdoor Units ............................. 3
2. External Appearance ......................................................... 4
3. Nomenclature ................................................................ ..... 5
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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1. Model Names of Indoor/Outdoor Units
1.1 Model Names of Units with Cooling only:
Mid-static
pressure duct
type
High-static
pressure
duct type
1.2 Model Names of Units with Cooling and heating:
Mid-static
pressure duct
type
High-static
pressure duct
type
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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2. External Appearance
2.1 Indoor Units
MTA-76C(H)RN1
MTA-96C(H)RN1
MFA-76C(H)RN1
MFA-96C(H)RN1
MTA-120CRN1\MTA-120HRN1
MTA-150CRN1
MOV-76C(H)N1-C
MOV-96C(H)N1-C
MOV-150C(H)N1-C (MOV-76C(H)N1-C*2)
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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3. Nomenclature
3.1 Indoor unit:
3.2 Outdoor unit:
None:R22;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: Duct type
F: Floor-standing type
H: High static pressure
Midea
Design times
None:R22;
N1:R410a
Function Code:
C: Cooling Only
H: Heat pump
Cooling Capacity (76 kBtu/h)
Universal Outdoor Unit
Outdoor Unit
Midea
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Part 2 Indoor Units
Duct Type ............................................................................... 7
Floor-standing Type ............................................................. 59
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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Duct Type
1. Features .............................................................................. 8
2. Specifications .................................................................... 9
3. Dimensions ...................................................................... 12
4. Service Space .................................................................. 14
5. Piping Diagrams .............................................................. 16
6. Wiring Diagrams .............................................................. 16
7.Capacity Table ................................................................... 21
8. Static Pressure ................................................................. 34
9. Electric Characteristics ................................................... 37
10. Sound Levels ................................................................. 38
11. Exploded View ................................................................ 39
12. Troubleshooting ............................................................. 50
13. Accessories .................................................................... 58
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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1. Features
1. Nested in the ceiling, space-saving and noble.
2. High capacity of cooling/heating, efficient, and energy-saving.
3. The air outlet is laid out according to you desire.
4. Economic and convenient installation
1) Several diffusers branch off from an indoor unit, adjusting the room temperature, which makes many
rooms to be air-conditioned with only one indoor unit.
2) All models feature thin design making them applicable to ceiling pocket that tends to be shallow
5. Way of air intake and inserting air filter
6. It is suitable be used for office, hospital, commercial place and home, the air conditioner will create the
comfortable and elegance environment for you.
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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2. Specifications
Indoor air flow(Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty.(20’/40’/40’HQ)
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°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Indoor air flow(Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty per (20'/40'/40'HD)
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°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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Indoor air flow (Hi/Med/Lo)
Type - Copper tube and aluminum fin
Copper tube and aluminum fin
Controller - Remote controller
Shipping Qty per (20'/40'/40'HD)
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°C WB; Equivalent refrigerant piping: 7.5m (horizontal).
3. Nominal heating capacities are based on the following conditions:
Indoor temp: 20°CDB, 15°C WB; Outdoor temp: 7°CDB, 6°CWB; Equivalent refrigerant piping: 7.5m (horizontal).
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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3. Dimensions
3.1 MTA-76C(H)RN1, MTA-96C(H)RN1, MHB-76C(H)RN1, MHB-96C(H)RN1
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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3.2 MTA-120C(H)RN1
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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3.3 MTA-150C(H)RN1
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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4. Service Space
Electric control box
Inspection hole
≥
6
0
0
m
m
≥
5
0
0
m
m
Inspection
Canvas adapter
Muffle
Air outlet
Air inlet
Air filter
hole
Muffle
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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5. Refrigerant cycle diagram
5.1 Cooling only: MTA-76CRN1, MTA-96CRN1, MTA-120CR N1, MTA-150CR N1
MHB-76CRN1, MHB-96CRN1
Discharge temp. sensor
HP Switch
Compressor
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
LP Switch
T4
T2
T3
Cooling
Indoor
heat-exchanger
5.2 Cooling and heating: MTA-76HRN1, MTA-96HRN1, MTA-120HRN1
MHB-76HRN1, MHB-96HRN1
Discharge temp. sensor
HP Switch
Compressor
4-way valve
Liquid-gas seperator
Outdoor heat-exchanger
Stop valve
Stop valve
Indoor unit
Check valve
LP Switch
T4
T2
T3
Heating
Cooling
Indoor
heat-exchanger
Capillary
Capillary
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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6. Wiring Diagrams
6.1 MTA-76CRN1, MTA-96CRN1, MHB-76CRN1, MHB-96CRN1
INDOOR POWER
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
W
H
I
T
E
RED RED
WHITE
SLOW
HIGH
LOW
BLUE
TO OUTDOOR
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN C ONTROL BO ARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
Y
E
L
L
O
W
BLACK
B
L
A
C
K
R
E
D
B
L
U
E
Y
E
L
L
O
W
Y/G
RED
WHITE
B
L
U
E
B
L
U
E
N-LINE
R
E
D
BLACK
CN1-3,CN7,CN8, CN10,
CN11,CN15,CN20
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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6.2 MTA-120CRN1, MTA-150CRN1
INDOOR POWER
B
L
A
C
K
Y
E
L
L
O
W
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
R
E
D
WHITE
RED RED
WHITE
WHITE
(GRAY)
WHITE
SLOW
HIGH
LOW
BLUE
BLUE
RED
TO OUTDOOR
Y/G
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN CONTROL BOARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
L
U
E
Y
E
L
L
O
W
B
L
A
C
K
B
L
A
C
K
R
E
D
R
E
D
B
L
U
E
B
L
U
E
Y
E
L
L
O
W
Y
E
L
L
O
W
Y/G
WHITE
R
E
D
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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6.3 MTA-76HRN1, MTA-96HRN1, MHB-76HRN1, MHB-96HRN1
INDOOR POWER
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
WHITE
RED
RED
WHITE
SLOW
HIGH
LOW
R
E
D
TO OUTDOOR
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN C ONTROL BO ARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
Y
E
L
L
O
W
B
L
A
C
K
R
E
D
B
L
U
E
Y
E
L
L
O
W
Y/G
WHITE
RED
BLUE
B
L
U
E
B
L
U
E
N-LINE
BLACK
BLACK
YELLOW
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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6.4 MTA-120HRN1
INDOOR POWER
B
L
A
C
K
Y
E
L
L
O
W
Y
E
L
L
O
W
G
R
E
E
N
B
R
O
W
N
B
L
U
E
R
E
D
B
L
U
E
R
E
D
R
E
D
WHITE
RED RED
WHITE
WHITE
(GRAY)
WHITE
SLOW
HIGH
LOW
BLUE
BLUE
RED
TO OUTDOOR
Y/G
B
L
A
C
K
Y
E
L
L
O
W
R
E
D
WHITE
B
L
U
E
Y/G
B
L
A
C
K
R
E
D
WHITE
B
L
U
E
Y/G
MAIN CONTROL BOARD
WHITE
(GRAY)
WHITE
(GRAY)
CN20 CN7 CN3 CN2 CN1
CN8
CN11 CN10 CN15
TO WIRE
CONTROLLER
RL1 RL2 RL3
BLUE
RED
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
R
O
W
N
B
L
U
E
Y
E
L
L
O
W
B
L
A
C
K
B
L
A
C
K
R
E
D
R
E
D
B
L
U
E
B
L
U
E
Y
E
L
L
O
W
Y
E
L
L
O
W
Y/G
WHITE
R
E
D
BLACK
CN1-3,CN7,CN8,
CN10,CN11,CN15,CN20
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7. Capacity Table
7.1 Cooling:
7.1.1 MTA-76CRN1
Gross Cooling Capacity (kW)
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.2 MTA-76HRN1
Gross Cooling Capacity (kW)
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.3 MTA-96CRN1
Gross Cooling Capacity (kW)
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.4 MTA-96HRN1
Gross Cooling Capacity (kW)
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)
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MCAC-UTSM-2012-12 R410A 50Hz Tropical Split AC
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7.1.5 MTA-120CRN1
Gross Cooling Capacity (kW)
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R410A 50Hz Tropical Split AC MCAC-UTSM-2012-12
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Gross Cooling Capacity (kW)
Notes:
1. DB = Dry Bulb Temperature (°C), WB = Wet Bulb Temperature (°C)
2. TGC = Total Cooling Capacity (kW)
3. SHC = Sensible Heating Capacity (kW)
4. PI = Power Input (kW)