Midea MFA-12HRN1 Configuration guide

MCAC-UTSM-2009-03 Contents
Contents i
Part 1 General Information ........................................................................1
Part 2 Indoor Units......................................................................................5
Part 3 Outdoor Units.................................................................................17
Part 4 Installation......................................................................................36
Part 5 Control............................................................................................56
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

MCAC-UTSM-2009-03 General Information
General Information 1
Part 1
General Information
1. Model Names of Indoor/Outdoor Units .......................2
2. External Appearance.....................................................2
2.1 Indoor Units.................................................................................. 2
2.2 Outdoor Units............................................................................... 2
3. Nomenclature ................................................................3
4. Features .........................................................................4

Model Names of Indoor/Outdoor Units MCAC-UTSM-2009-03
2 General Information
1. Model Names of Indoor/Outdoor Units
1.1 Indoor Units
Model name Dimension (mm) Net/Gross weight (kg) Power supply
MFA-12HRN1
Width: 700
Height: 600
Depth: 210
15/20 220~240V-1ph-50Hz
MFA-18HRN1
Width: 700
Height: 600
Depth: 210
15/20 220~240V-1ph-50Hz
MFA-12HRN1-Q
Width: 700
Height: 600
Depth: 210
20/25 220~240V-1ph-50Hz
1.2 Outdoor Units
Model name Dimension (mm) Net/Gross weight (kg) Power supply
MON-12HN1
Width: 780
Height: 547
Depth: 250
34/38 220~240V-1ph-50Hz
MON-18HN1
Width: 842
Height: 695
Depth: 324
52/56 220~240V-1ph-50Hz
MON-12HN1-Q
Width: 780
Height: 547
Depth: 250
35/39 220~240V-1ph-50Hz
2. External Appearance
2.1 Indoor Units
MFA-12HRN1/MFA-18HRN1/MFA-12HRN1-Q
2.2 Outdoor Units
12,000Btu/h 18,000Btu/h

MCAC-UTSM-2009-03 Nomenclature
General Information 3
3. Nomenclature
3.1 Indoor Unit
M F A - 12 H R N1 - Q
Q: Quickly Coupling
Refrigerant Type
N1 : R410A
Control Mode
R: Remote Control
Function Code
C: Cooling Only
H: Cooling & Heating
Capacity (×1000Btu/h)
Product Series
A: 1st Designed
Product Category
F: Console Type
Midea
3.2 Outdoor Unit
M O N - 12 H N1- Q
Q: Quickly Coupling
Refrigerant
N1: R410A
Function Code
C: Cooling Only
H: Cooling & Heating
Capacity (×1000Btu/h)
Non-universal Outdoor Unit
O: Outdoor unit
N: Non-universal
Midea

Features MCAC-UTSM-2009-03
4 General Information
4. Features
1. Achieves set temperature more quickly
——air supplying from top and bottom or from top only
——air inlet from four directions
2. Compact unit body, space saving
——this unit body is very thin and harmonious with room. It is beautiful, elegant and space saving.
——light weight and compact.
3. Flexible installation
——can be used for floor standing or lower wall applications
4. High efficiency filter
——built in Formaldehyde nemesis filter
——active-carbon and biological anti-virus filter is optional.
5. Comfort
——flexible air blow: vertical auto swing and wide angle louvers ensure that warm air reaches the furthest
corners of the room and increase the air flow coverage
——Low noise operation
——Low starting power and precise room temperature adjustment
6. Powerful mode can be selected for rapid cooling or heating.
7. Easy cleaning grille and maintenance

MCAC-UTSM-2009-03 Indoor Units
Indoor Units 5
Part 2
Indoor Units
1. Specifications................................................................6
2. Dimensions....................................................................7
3. Service Space................................................................7
4. Wiring Diagrams............................................................8
5. Air Velocity and Temperature Distributions ...............9
6. Capacity Tables ...........................................................10
7. Electric Characteristics..............................................13
8. Sound Levels...............................................................13
9. Exploded View.............................................................14
10. Accessories...............................................................16

Specifications MCAC-UTSM-2009-03
6 Indoor Units
1. Specifications
Model MFA-12HRN1 MFA-18HRN1 MFA-12HRN1-Q
Code 220044000090 220044100280 220044000100
Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50
Cooling
Capacity Btu/h 12000 18000 12000
Input W 1096 1650 1101
Heating
Capacity Btu/h 13380 19600 13300
Input W 1122 1715 1117
Indoor fan
motor
Model RD-280-20-8A RD-280-20-8A RD-280-20-8A
Type DC MOTOR DC MOTOR DC MOTOR
Input W 24.5/19.5/16.8/13/10.5 38/33.5/24.5/15.2 24.5/19.5/16.8/13/10.5
Capacitor uF / / /
Speed(Hi/Mi/Lo) r/min 680/610/560/460/420 890/840/780/680/530 680/610/560/460/420
Indoor coil
Number of rows 2 2 2
Tube pitch(a)×row
pitch(b) mm 21×13.37 21×13.37 21×13.37
Fin spacing mm 1.3 1.3 1.3
Fin type (code) Hydrophilic aluminum Hydrophilic aluminum Hydrophilic aluminum
Tube outside dia. and
type mm Ф7 Inner grooved copper tube
Ф7 Inner grooved
copper tube
Ф7 Inner grooved
copper tube
Coil length× height ×
width mm 512×378×26.74 512×378×26.74 512×378×26.74
Number of circuits 2 2 2
Indoor air flow(Hi/Mi/Lo) m3/h 550/490/460/380/350 740/700/640/560/440 550/490/460/380/350
Indoor noise level (sound pressure) dB(A) 35/33/31/27/23 38/35/33/31/29 35/33/31/27/23
Indoor unit
Dimension (W×H×D) mm 700×600×210 700×600×210 700×600×210
Packing (W×H×D) mm 810×710×305 810×710×305 810×710×365
Net/Gross weight kg 15/20 15/20 20/25
Refrigerant type R410A R410A R410A
Design pressure MPa 4.2/2.0 4.2/2.0 4.2/2.0
Refrigerant
piping Liquid side/ Gas side mm φ6.4/φ12.7 φ6.4/φ12.7 φ6.4/φ12.7
Drainage water pipe diameter mm φ16 φ16 φ16
Connection
wiring
Power wiring mm23×1.5 3×2.5 3×1.5
Signal wiring mm24×1.5 4×2.5 4×1.5
Controller R51D/E(standard) R51D/E(standard) R51D/E(standard)
Operation temperature ℃17~30 17~30 17~30

MCAC-UTSM-2009-03 Dimensions
Indoor Units 7
2. Dimensions
3. Service Space

Wiring Diagrams MCAC-UTSM-2009-03
8 Indoor Units
4. Wiring Diagrams
4.1 MFA-12HRN1 MFA-18HRN1
4.2 MFA-12HRN1-Q

MCAC-UTSM-2009-03 Air Velocity and Temperature Distributions
Indoor Units 9
5. Air Velocity and Temperature Distributions
Discharge angle 60
Airflow velocity
Temperature

Capacity Tables MCAC-UTSM-2009-03
10 Indoor Units
6. Capacity Tables
6.1 MFA-12HRN1
Cooling capacity
Cooling Outdoor conditions (DB)
Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC
21/15ºC DB/WB
TC 3.30 3.14 2.98 2.85
SC 2.44 2.41 2.38 2.39
Input 0.91 0.99 1.03 1.06
24/17ºC DB/WB
TC 3.39 3.23 3.07 2.88
SC 2.54 2.52 2.49 2.42
Input 0.96 1.03 1.07 1.13
27/19ºC DB/WB
TC 3.46 3.30 3.22 2.98
SC 2.56 2.54 2.50 2.44
Input 0.99 1.04 1.096 1.15
32/23ºC DB/WB
TC 3.52 3.39 3.33 3.07
SC 2.99 2.95 2.93 2.86
Input 1.03 1.07 1.15 1.19
Heating capacity
Heating Outdoor conditions
Indoor Conditions (DB) (kW) 24/18ºC DB/WB 7/6ºC DB/WB 2/1ºC DB/WB -5/-6ºC DB/WB
15ºC TC 4.58 3.95 3.03 2.75
Input 1.21 1.04 0.90 0.84
20ºC TC 4.44 3.92 2.85 2.68
Input 1.32 1.122 0.99 0.91
27ºC TC 4.15 3.31 2.68 2.60
Input 1.40 1.21 1.07 0.99

MCAC-UTSM-2009-03 Capacity Tables
Indoor Units 11
6.2 MFA-18HRN1
Cooling capacity
Cooling Outdoor conditions (DB)
Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC
21/15ºC DB/WB
TC 5.46 5.19 4.93 4.72
SC 4.04 4.00 3.94 3.96
Input 1.32 1.43 1.50 1.55
24/17ºC DB/WB
TC 5.62 5.35 5.09 4.77
SC 4.21 4.18 4.12 4.01
Input 1.40 1.50 1.56 1.64
27/19ºC DB/WB
TC 5.72 5.46 5.30 4.93
SC 4.24 4.20 4.13 4.04
Input 1.43 1.51 1.65 1.67
32/23ºC DB/WB
TC 5.83 5.62 5.51 5.09
SC 4.96 4.89 4.85 4.73
Input 1.50 1.56 1.67 1.74
Heating capacity
Heating Outdoor conditions
Indoor Conditions (DB) (kW) 24/18ºC DB/WB 7/6ºC DB/WB 2/1ºC DB/WB -5/-6ºC DB/WB
15ºC TC 7.80 6.30 5.16 4.68
Input 1.85 1.59 1.37 1.29
20ºC TC 7.56 5.74 4.86 4.56
Input 2.02 1.715 1.51 1.39
27ºC TC 7.08 5.64 4.56 4.44
Input 2.14 1.85 1.63 1.51

Capacity Tables MCAC-UTSM-2009-03
12 Indoor Units
6.3 MFA-12HRN1-Q
Cooling capacity
Cooling Outdoor conditions (DB)
Indoor Conditions (kW) 21ºC 28ºC 35ºC 43ºC
21/15ºC DB/WB
TC 3.30 3.14 2.98 2.85
SC 2.44 2.41 2.38 2.39
Input 0.91 0.99 1.03 1.07
24/17ºC DB/WB
TC 3.39 3.23 3.07 2.88
SC 2.54 2.52 2.49 2.42
Input 0.97 1.03 1.08 1.13
27/19ºC DB/WB
TC 3.46 3.30 3.21 2.98
SC 2.56 2.54 2.50 2.44
Input 0.99 1.05 1.101 1.16
32/23ºC DB/WB
TC 3.52 3.39 3.33 3.07
SC 2.99 2.95 2.93 2.86
Input 1.03 1.08 1.16 1.20
Heating capacity
Heating Outdoor conditions
Indoor Conditions (DB) (kW) 24/18ºC DB/WB 7/6ºC DB/WB 2/1ºC DB/WB -5/-6ºC DB/WB
15ºC TC 4.58 3.70 3.03 2.75
Input 1.21 1.04 0.89 0.84
20ºC TC 4.44 3.68 2.85 2.68
Input 1.32 1.117 0.98 0.90
27ºC TC 4.15 3.31 2.68 2.60
Input 1.40 1.21 1.06 0.98
Remark:
TC: Total capacity; kW
SC: Sensible heat capacity; kW
Input: Input power; kW

MCAC-UTSM-2009-03 Electric Characteristics
Indoor Units 13
7. Electric Characteristics
Model Indoor Units Power Supply Indoor Fan Motor
Hz Voltage Min. Max. MCA MFA kW FLA
MFA-12HRN1(-Q) 50 220-240V 198V 254V 0.1 15 0.02 0.08
MFA-18HRN1 50 220-240V 198V 254V 0.156 20 0.02 0.125
Remark:
MCA: Min. Current Amps. (A)
MFA: Max. Fuse Amps. (A)
KW: Fan Motor Rated Output (kW)
FLA: Full Load Amps. (A)
8. Sound Levels
Model Noise level dB(A)
Highest Higher H M L
MFA-12HRN1/ MFA-12HRN1-Q 35 33 31 27 23
MFA-18HRN1 38 35 33 31 29

Exploded View MCAC-UTSM-2009-03
14 Indoor Units
9. Exploded View
9.1 MFA-12HRN1 MFA-18HRN1
No. Part Name Quantity No. Part Name Quantity
1 Panel frame ass'y 1 14.1 Main control board ass'y 1
2 Base ass'y 1 14.2 Wire joint 1
3 Filter 1 14.3 Dial-up board ass'y 1
4 Air fresh net 2 14.4 Display board ass'y 1
5 Formaldehyde-killer 2 14.5 Room temp sensor ass'y 1
6 Air guide ring ass'y 1 15 Wire clamp 1
7 Panel ass'y 1 16 Motor bracket 1
8 Centrifugal fan 1 17 Dc motor 1
9 Air outlet frame ass'y 1 18 Evaporator ass'y 1
9.1 Stepper motor 1 18.1 Output pipe ass'y 1
10 Drainage pan ass'y 1 18.2 Input pipe ass'y 1
10.1 Stepper motor 1 18.3 Evaporator 1
11 Pipe clamp 1 19 Remote controller 1
12 E-Part box cover 1 20 Remote controller holder ass'y 1
13 Insulation washer 1 21 Temp.sensor ass'y 1
14 E-part box ass'y 1
18

MCAC-UTSM-2009-03 Exploded View
Indoor Units 15
9.2 MFA-12HRN1-Q
No. Part Name Quantity No. Part Name Quantity
1 Panel frame ass'y 1 14.2 Wire joint 1
2 Base ass'y 1 14.3 Dial-up board ass'y 1
3 Filter 1 14.4 Display board ass'y 1
4 Air fresh net 2 14.5 Room temp. sensor ass'y 1
5 Formaldehyde-killer 2 15 Wire clamp 1
6 Air guide ring ass'y 1 16 Motor bracket 1
7 Panel ass'y 1 17 Dc motor 1
8 Centrifugal fan 1 18 Evaporator ass'y 1
9 Air outlet frame ass'y 1 18.1 Output pipe ass'y 1
9.1 Stepper motor 1 18.2 Input pipe ass'y 1
10 Drainage pan ass'y 1 18.3 Evaporator 1
10.1 Stepper motor 1 19 Connection tube ass'y 1
11 Pipe clamp 1 20 Remote controller 1
12 E-Part box cover 1 21 Remote controller holder ass'y 1
13 Insulation washer 1 22 Temp. sensor ass'y 1
14 E-part box ass'y 1 23 Power supply wire 1
14.1 Main control board ass'y 1

Accessories MCAC-UTSM-2009-03
16 Indoor Units
10. Accessories
10.1 MFA-12HRN1/ MFA-18HRN1
Name Shape Quantity
Installation fittings Hook
2
Remote controller & Its Frame
Remote controller
1
Frame
1
Mounting screw(ST2.9×10-C-H) 2
Alkaline dry batteries (AM4) 2
Others
Installation manual
1
Owner's manual
1
10.2 MFA-12HRN1-Q
Name Shape Quantity
Installation fittings Hook
2
Remote controller & Its Frame
Remote controller
1
Frame
1
Mounting screw(ST2.9×10-C-H) 2
Alkaline dry batteries (AM4) 2
Others
Installation & Owner's manual / 1
Holding sponge 2
Wrapping tape
1

MCAC-UTSM-2009-03 Outdoor Units
Outdoor Units 17
Part 3
Outdoor Units
1. Specifications..............................................................18
2. Dimensions..................................................................19
3. Service Space..............................................................20
4. Piping Diagrams..........................................................20
5. Wiring Diagrams..........................................................21
6. Electric Characteristics..............................................24
7. Operation Limits..........................................................24
8. Sound Levels...............................................................25
9. Exploded View.............................................................26
10. Troubleshooting........................................................29

Specifications MCAC-UTSM-2009-03
18 Outdoor Units
1. Specifications
Model MON-12HN1 MON-18HN1 MON-12HN1-Q
Code 220075100200 220075200460 220075100210
Power supply V-ph-Hz 220~240-1-50 220~240-1-50 220~240-1-50
Max. input consumption W 1500 2000 1500
Max. input current A 7.5 12 7.5
Starting current A 29.9 31.8 29.9
Compressor
Model PA140X2C-4FT PA200X2CS-4KU1 PA140X2C-4FT
Type Rotary Rotary Rotary
Brand Midea-TOSHIBA Midea-TOSHIBA Midea-TOSHIBA
Supplier Midea-TOSHIBA Midea-TOSHIBA Midea-TOSHIBA
Capacity Btu/h 11566.68 16787.04 11566.68
Input W 1150 1670 1150
Rated current (RLA) A 5.3 7.81 5.3
Locked rotor Amp (LRA) A 29.9 31.8 29.9
Thermal protector Internal Internal Internal
Capacitor μF 35μF/440-450V 50μF/440-450V 35μF/440-450V
Refrigerant oil ml ESTEL OIL VG74,
480
ESTER OIL VG74,
750
ESTEL OIL VG74,
480
Outdoor fan
motor
Model YDK24-6F YDK53-6K YDK24-6F
Type AC MOTOR AC MOTOR AC MOTOR
Brand WELLING WELLING WELLING
Input W 58 130 58
Capacitor μF 2.5μF/450V 2.5μF/450V 2.5μF/450V
Speed r/min 800 750 800
Outdoor coil
Number of rows 2 2 2
Tube pitch(a) × row
pitch(b) mm 21×13.37 22×19.05 21×13.37
Fin spacing mm 1.5 1.6 1.5
Fin type Hydrophilic
aluminum
Hydrophilic
aluminum
Hydrophilic
aluminum
Tube outside dia. and type mm Ф7 Inner grooved
copper tube
Ф7.94 Inner grooved
copper tube
Ф7 Inner grooved
copper tube
Coil length × height × width mm 628×504×26.74 630×660×38.1 628×504×26.74
Number of circuits 2 2 2
Outdoor air flow m3/h 1985 2770 1985
Outdoor noise level (sound pressure) dB(A) 52.8 55.5 52.6
Outdoor unit
Dimension(W×H×D) mm 780×547×250 842×695×324 780×547×250
Packing (W×H×D) mm 910×575×335 975×770×405 910×575×335
Net/Gross weight kg 34/38 52/56 35/39
Refrigerant Type R410A R410A R410A
Charged volume g 1120 1300 1120
Design pressure MPa 4.2/2.0 4.2/2.0 4.2/2.0
Refrigerant
piping
Liquid side/ Gas side mm φ6.4/φ12.7 φ6.4/φ12.7 φ6.4/φ12.7
Max. pipe length m 15 20 —
Max. difference in level m 5 10 —
Ambient temp. ℃cooling: 21~43;
heating: -5~24
cooling: 21~43;
heating: -5~24
cooling: 21~43;
heating: -5~24