Midea MOU-12FN1-QD0 User manual

FLOOR-STANDING TYPE AIR CONDITIONER
Installation Manual
Floor-Standing Type
IMPORTANT NOTE:
Read this manual carefully before
installing or operating your new air
conditioning unit. Make sure to save
this manual for future reference.
MFAU-12FNXD0
MOU-12FN1-QD0

Accessories....................................................04
Indoor Unit Parts ........................................ 07
Indoor Unit Installation Instructions ....... 08
Safety Precautions .....................................05
Outdoor Unit Installation......................... 12
Outdoor Unit Installation Instructions ......12
Outdoor Unit Types and Specifications ....13
Notes on Drilling Hole in Wall ....................14
Drainpipe Installation............................... 15
Table of Contents
Installation Manual
Indoor Unit Installation ...........................07
Installation Overview ...............................06
1
2
5
3
4
6
Indoor Unit Installation ...........................07

Page 3 
Refrigerant Piping Connection.......................17
Notes on Pipe Length and Elevation ..............17
Refrigerant Piping Connection Instructions ...18
Wiring................................................. 20
Outdoor Unit Wiring .................. 20
Indoor Unit Wiring ..................... 21
Power Specifications ................... 22
Air Evacuation..................................................23
Evacuation Instructions ................................ 23
Note on Adding Refrigerant ....................... 24
Test Run.............................................25
MC MC
7
8
9
10
L N

Page 4 
Accessories 1
The air conditioning system comes with the following accessories. Use all of the installation parts
and accessories to install the air conditioner. Improper installation may result in water leakage,
electrical shock and fire, or equipment failure.
Red short connected wire
(Applied to the W/L pin of outdoor unit
terminal block be short-circuited.)
QUANTITY
SHAPENAME
Soundproof / insulation sheath (some models) 2
1
1
1
Installation Fittings
Refrigeration Fittings
Others
Installation manual
Transfer connector(Φ12.7-Φ15.9)/
( )(Packed with the indoor unit )
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
Transfer connector(Φ6.35-Φ9.52)/
( )(Packed with the indoor unit)
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
Transfer connector(Φ9.52-Φ12.7)/
( ) (Packed with the indoor unit,
used for multi-type models only )
NOTE: Pipe size may differ from appliance to
appliance. To meet different pipe size requirements,
sometimes the pipe connections need a transfer
connector installed on the outdoor unit .
1
Owner‘s manual
Drain joint (some models)
Seal ring (some models)
Drainpipe Fittings
(for cooling & heating)
Hook
EMC Magnetic Ring
(some models)
Magnetic ring
(wrap the electric wires S1 & S2 ( P & Q & E )
around the magnetic ring twice)
Magnetic ring
(Hitch on the connective cable between the indoor
unit and outdoor unit after installation.)
1
1
Φ0.5in-Φ0.63in
Φ0.25in-Φ0.375in
Φ0.375in-Φ0.5in
1
(on some models)
1
(on some models)
1
(on some models)
1(on some models)
2
Optional accessories
There are two types of remote controls: wired and wireless.
Select a remote controller based on customer preferences and requirements and install in an
appropriate place.
Refer to catalogues and technical literature for guidance on selecting a suitable remote controller.
•
S1&S2(P&Q&E)

Page 5 
Safety Precautions 2
Read Safety Precautions Before Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either aWARNING or CAUTION.
WARNING
• Carefully read the Safety Precautions before installation.
• In certain functional environments, such as kitchens, server rooms, etc., the use of specially
designed air-conditioning units is highly recommended.
• Only trained and certified technicians should install, repair and service this air
conditioning unit.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment and personal property.
• Strictly follow the installation instructions set forth in this manual.
Improper installation may result in electrical shock, short circuit, leaks, fire or other damage to
the equipment.
•Before you install the unit, consider strong winds, typhoons and earthquakes that might affect
your unit and locate it accordingly. Failure to do so could cause the equipment to fail.
•After installation, ensure there are no refrigerant leaks and that the unit is operating properly.
Refrigerant is both toxic and flammable and poses a serious health and safety risk.
Note about Fluorinated Gasses
1.
This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.
2.
Installation, service, maintenance and repair of this unit must be performed by a certified
technician.
3.
Product uninstallation and recycling must be performed by a certified technician.
4.
If the system has a leak-detection system installed, it must be checked for leaks at least every 12
months.
5.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.
Failure to observe a warning may result in death. The appliance must be installed in
accordance with national regulations.
Failure to observe a caution may result in injury or equipment damage.
WARNING
CAUTION

Page 6 
Installation Overview 3
Unit Installation
Overview
L N
123
4
5
MC MC
6
7
Install the indoor unit
(Page 7)
INSTALLATION ORDER
Install the outdoor unit
(Page 13) Install the drainpipe (Page 15)
Evacuate the refrigeration system
(Page 23) Connect the wires (Page 20) Connect the refrigerant pipes (Page 17)
Perform a test run
(Page 25)

Page 7 
Indoor Unit Installation 4
Indoor Unit Parts
Fig. 4.1
Safety Precautions
WARNING
•Securely install the indoor unit on a
structure that can sustain its weight. If the
structure is too weak, the unit may fall and
cause personal injury, unit and property
damage, or death.
• DO NOT install the indoor unit in a
bathroom or laundry room as excessive
moisture can short the unit and corrode
the wiring.
CAUTION
•Install the indoor and outdoor units, cables
and wires at least 1m (3.2’) from televisions
or radios to prevent static or image
distortion. Depending on the appliances,
a 1m (3.2’) distance may not be sufficient.
•If the indoor unit is installed on metal,
it must be electrically grounded.
Indoor Unit
Installation
Drain hose
Refrigerant connecting
pipe
Display panel
Air inlet (with air filter in it)
Air flow louver (at air outlet)
Air flow louver (at air outlet)

Page 8 
Indoor Unit Installation Instructions
NOTE: Panel installation should be performed
after piping and wiring have been completed.
Step 1:Select installation location
The indoor unit should be installed in a location
that meets the following requirements:
Enough room for installation and
maintenance.
Enough room for the connecting pipe and
drainpipe.
The ceiling is horizontal and its structure can
sustain the weight of the indoor unit.
The air inlet and outlet are not impeded.
The airflow can fill the entire room.
There is no direct radiation from heaters.
CAUTION
DO NOT install the unit in the following
Areas with oil drilling or fracking
Coastal areas with high salt content in the
air
Areas with caustic gases in the air, such as
near hot springs
Areas with power fluctuations, such as
factories
Enclosed spaces, such as cabinets
Areas with strong electromagnetic waves
Areas that store flammable materials or gas
Rooms with high humidity, such as
bathrooms or laundry rooms
RECOMMENDED DISTANCES BETWEEN THE INDOOR UNIT
The distance between the mounted indoor unit should meet the specifications illlustrated in the
following diagram. (See Fig. 4.2)
Fig. 4.2
Indoor Unit
Installation
locations:
≥100mm
≥100mm ≥100mm
≥1000mm

Page 9 
Indoor Unit
Installation
Fig. 4.3
195mm
Hook
700mm 210mm
600mm

Page 10 
Indoor Unit
Installation
Step 2:Installing the main body
Fig. 4.4
Fig. 4.5
Affix the hook with a tapping screw onto the wall.
195mm
Hook
Tapping
screw
Washer
＜6mm
Hang the indoor unit on the hook.
(The bottom of body can touch the floor or remain suspended, but the body must be installed
vertically.)