Midea MOU-12HDN1 User manual

MIDEA LCAC
50Hz R410A DC Inverter
Service Manual
2012

MLCAC-UTSM-2010-10 Contents
Contents i
Part 1 General Information ................................................................................................. 1
Part 2 Indoor Units .............................................................................................................. 7
Part 3 Outdoor Units ......................................................................................................... 74
Part 4 Installation ............................................................................................................ 115
Part 5 Control................................................................................................................... 126
※The specifications, designs, and information in this book are subject to change without notice for
product improvement.

MLCAC-UTSM-2010-10 General Information
General Information 1
Part 1
General Information
1. Model Names of Indoor/Outdoor Units...........................2
2. External Appearance ........................................................3
2.1 Indoor Units ................................................................................. 3
2.2 Outdoor Units .............................................................................. 4
3. Nomenclature ....................................................................5
4. Features .............................................................................6

Model Names of Indoor/Outdoor Units MLCAC-UTSM-2010-10
2 General Information
1. Model Names of Indoor/Outdoor Units
1.1 Indoor Units
R410A (capacity multiplied by 1000Btu/h)
Type Function 12 18 24 30 36 48 60
New Four-way cassette Cooling and heating √√
Four-way cassette Cooling and heating √√√√√√
Duct Cooling and heating √√√√√√√
Ceiling & floor Cooling and heating √√√√√√√
Console Cooling and heating √√
1.2 Outdoor Units
Model of outdoor unit and corresponding indoor unit
Universal Outdoor unit Model Compressor type Compressor Brand Matched indoor units
MOU-12HDN1 Rotary DC Inverter GMCC
MCA2-12HRDN1-Q
MTB-12HWDN1
MUB-12HRDN1
MFA-12HRDN1
MOUA-18HDN1-C0 Scroll DC Inverter Shenyang SANYO
MCA2-18HRDN1-Q
MTB-18HWDN1
MUB-18HRDN1
MCC-18HRDN1
MFA-18HRDN1
MOUB-24HDN1 Rotary DC Inverter HITACHI
MTB1-24HWDN1
MUB-24HRDN1
MCC-24HRDN1
MOU-30HDN1 Rotary DC Inverter MITSUBISHI
MTB-30HWDN1
MUB-30HRDN1
MCC-30HRDN1
MOUB-36HDN1-Q Rotary DC Inverter MITSUBISHI MTB-36HWDN1
MUB-36HRDN1
MCC-36HRDN1
MOUB-36HDN1-R Rotary DC Inverter MITSUBISHI
MOU-48HDN1 Rotary DC Inverter MITSUBISHI MTB-48HWDN1
MUB-48HRDN1
MCC-48HRDN1
MOUB-48HDN1-R Rotary DC Inverter MITSUBISHI
MOUA-60HRDN1 Scroll DC Inverter MITSUBISHI MTB-60HWDN1
MUB-60HRDN1
MOUD-60HDN1-R Scroll DC Inverter MITSUBISHI MCC-60HRDN1

MLCAC-UTSM-2010-10 External Appearance
General Information 3
2. External Appearance
2.1 Indoor Units
Duct Ceiling & Floor
Four-way Cassette
New Compact Four-way cassette
Console

External Appearance MLCAC-UTSM-2010-10
4 General Information
2.2 Outdoor Units
MOU-12HDN1
MOUA-18HDN1-C0
MOUB-24HDN1
MOU-30HDN1, MOUB-36HDN1-R
MOUB-36HDN1-Q, MOU-48HDN1, MOUB-48HDN1-R
MOUA-60HRDN1, MOUD-60HDN1-R

MLCAC-UTSM-2010-10 Nomenclature
General Information 5
3. Nomenclature
3.1 Indoor Unit
M U B - 18 H R D N1
Refrigerant Type
N1 R410A
DC Inverter
Control Mode
R Remote Control
Function Code
C cooling Only
H cooling & Heating
Capacity (× 1000Btu/h)
Product Series
A First Time Design BSecond Time Design
C Third Time Design
Product Category
C Cassette Type
T Duct Type
U Ceiling & Floor Type
H High Static Pressure Duct Type
Midea
3.2 Outdoor Unit
M O U D - 60 H D N1- R
Power Supply
R 380~415V, 3N, 50Hz
-- 220~240V, 1N, 50Hz
Refrigerant
N1 R410A
DC Inverter
Function Code
C cooling only Hcooling & heating
Capacity (× 1000Btu/h)
Product Series
A Time A Designed BTime B Designed
C Time C Designed D Time D Designed
Universal Outdoor Unit
O Outdoor unit U Universal
Midea
FConsole Type

Features MLCAC-UTSM-2010-10
6 General Information
4. Features
4.1 Universal outdoor unit design
Indoor unit with the same capacity can match with the same outdoor unit.
4.2 High efficiency and energy saving.
Thanks to the DC inverter technology and optimized piping system, the EER and COP of whole
series can easily reach A-class.
4.3 Low noise and low starting current.
Thanks to the DC inverter technology, the system can work with low noise, and very small starting
current.
4.4 Intelligent refrigerant adjustment technology.
Throttle part is made up of capillary and electronic expansion valve (EXV). The outdoor unit can
output the most accurate capacity in any condition.
4.5 Working in cooling mode under -15℃.
Outdoor unit built-in with low ambient kit, it can control the outdoor unit’s fan and cooling can be
performed throughout the year for computer rooms, banquet halls, etc. Wide operation range
covers outdoor temperatures as low as -15℃for cooling.
4.6 Indoor & outdoor unit’s power supply is separate.
4.7 All indoor units have network control function.
4.8 All indoor units have Auto-restart function.

MLCAC-UTSM-2010-10 Indoor Units
Indoor Units 7
Part 2
Indoor Units
New Four-way Cassette Type (Compact) ...........................8
Four-way Cassette Type.....................................................17
Duct Type.............................................................................31
Ceiling & Floor Type ...........................................................45
Console Type.......................................................................61

New Four-way Cassette Type (Compact) MLCAC-UTSM-2010-10
8 New Four-way Cassette Type (Compact)
New Four-way Cassette Type (Compact)
1. Features ..........................................................................................................9
2. Dimensions...................................................................................................10
3. Service Space ...............................................................................................10
4. Wiring Diagrams...........................................................................................11
5. Air Velocity and Temperature Distributions(Reference Data) ..................12
6. Electric Characteristics ...............................................................................13
7. Sound Levels................................................................................................13
8. Accessories ..................................................................................................14
9. The Specification of Power .........................................................................14
10. Field Wiring.................................................................................................15

MLCAC-UTSM-2010-10 Features
New Four-way Cassette (Compact) 9
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
(4) Improvement for easy installation and maintenance
---Little space is required for installation into a shallow ceiling
---Because of the compactness and weight reduction of the main unit and panel, all models can be
installed without a hoist
(5) 3600Air Flow Panel
3600 air outlet makes equal,fast ad wide range cooling
(6) Inside E-box design
The E-box is simply and safely build inside the indoor unit, of witch ceiling side is 600mm*600mm. It is
convenient to install and maintain. Checking the control part is easy, you only need to open the air return
grille.

Dimensions MLCAC-UTSM-2010-10
10 New Four-way Cassette (Compact)
2. Dimensions
3. Service Space

MLCAC-UTSM-2010-10 Wiring Diagrams
New Four-way Cassette (Compact) 11
4. Wiring Diagrams
MCA2-12HRDN1-Q
MCA2-18HRDN1-Q

Air Velocity and Temperature Distributions(Reference Data) MLCAC-UTSM-2010-10
12 New Four-way Cassette (Compact)
5. Air Velocity and Temperature Distributions(Reference Data)
Airflowvelocity
Temperature

MLCAC-UTSM-2010-10 Electric Characteristics
New Four-way Cassette (Compact) 13
6. Electric Characteristics
Model Indoor Units Power
Supply
Hz MFA Min. Max. MFA
MCA2-12HRDN1-Q 50 220-240V 198V 254V 20
MCA2-18HRDN1-Q 50 220-240V 198V 254V 15
Remark:
MFA: Max. Fuse Amps. (A)
7. Sound Levels
1.4m
Microphone
Model
Noise level dB(A)
H M L
MCA2-12HRDN1-Q 42 41 38
MCA2-18HRDN1-Q 42 41 38

Accessories MLCAC-UTSM-2010-10
14 New Four-way Cassette (Compact)
8. Accessories
Name Shape Quantity
1. Drain joint (Be provided in outdoor unit.) 1
2. Remote controller 1
3. Remote controller holder 1
4. Mounting screw(ST2.9×10-C-H) 2
5. Alkaline dry batteries (AM4) 2
6. Owner's manual 1
7. Installation manual 1
9. The Specification of Power

MLCAC-UTSM-2010-10 Field Wiring
New Four-way Cassette (Compact) 15
10. Field Wiring
MCA2-12HRDN1-Q
MCA2-18HRDN1-Q

Field Wiring MLCAC-UTSM-2010-10
16 New Four-way Cassette (Compact)
MCA2-12HRDN1-Q
MCA2-18HRDN1-Q