Midea MFA-12HRN1, MFA-18HRN1, MFA-12HRN1-Q Instructions Manual

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/MF A -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 mm

2

3×1.5 3×2.5 3×1.5

Signal wiring mm2 4×1.5 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