Samsung MH18VP2X User manual

ENGLISH
ESPAÑOL
FRANÇAIS
ITALIANO
PORTUGUÊS
DEUTSCH
E§§HNIKA
E S F I P D G R DB98-20237A(3)
RUSSIAN
INSTALLATION MANUAL
MANUAL DE INSTALACIÓN
MANUEL D’INSTALLATION
MANUALE D’INSTALLZIONE
MANUAL DE INSTALAÇÃO
INSTALLATIONS-HANDBUCH
E°XEIPI¢IO E°KATA™TA™H™
àçëíêìäñàü èé ìëíÄçéÇäÖ
Free Joint Multi Air Conditioner (Cool and Heat)
Acondicionador de aire libre del empalme multi (Refrigeración y Calefacción)
Climatiseur Free Joint Multi (Refroidissement et Chauffage)
Aria condizionata Free Joint Multi (Raffreddamento e Riscaldamento)
Free Joint Multi ar condicionado (Refrigeração e Aquecimento)
Free Joint Multi Klimaanlage (Kühlen und Wärmen)
¶ÔÏÏ·Ïfi ∫ÏÈÌ·ÙÈÛÙÈÎfi ªË¯¿ÓËÌ· ∂χıÂÚ˘ ŒÓˆÛ˘ (æ‡Í˘ - £¤ÚÌ·ÓÛ˘)
ååÌÌÓÓ„„ÓÓÙÙÛÛÌÌÍ͈ˆËËÓÓÌ̇‡Îθ¸ÌÌ˚˚ÈÈ ÇÇÓÓÁÁ‰‰ÛÛ¯¯ÌÌ˚˚ÈÈ ääÓÓÌ̉‰ËˈˆËËÓÓÌÌÂÂ ëë‚‚ÓÓ··ÓÓ‰‰ÌÌÓÓ„„ÓÓ ëëÓÓ‰‰ËËÌÌÂÂÌÌËËflfl ((ééııη‡Êʉ‰ÂÂÌÌËË ËË éé··ÓÓ„„‚‚))
MH18VP2X
MH19VP2X
MH052FXEA2
MH068FXEA4
MH080FXEA4

E-2
Safety Precautions
The following safety precautions must be taken when using your air conditioner.
◆The unit should not be installed by the user. Ask the dealer or authorized
company to install the units except room air conditioners for the U.S.A and
Canada area.
◆If the unit is installed improperly, water leakage, electric shock or fire may
result.
◆The air conditioner must be installed in accordance with national wiring
regulations and safety regulations wherever applicable.
◆Mount with the lowest moving parts at least 2.5 m above the floor or grade
level. (If applicable)
◆The manufacturer does not assume responsibility for accidents or injury
caused by an incorrectly installed air conditioner. If you are unsure about
installation, contact an installation specialist.
◆When installing the built-in type air conditioner, keep all electrical cables
such as the power cable and the connection cord in pipe, ducts, cable
channels e.t.c to protect them against liquids, outside impacts and so on.
WARNING
INSTALLING THE UNIT
◆If the power cord of this air conditioner is damaged, it must be replaced by
the manufacturer, its service agent or similarly qualified persons in order to
avoid a hazard.
◆The unit must be plugged into an independent circuit if applicable or
connect the power cable to the auxiliary circuit breaker.An all pole
disconnection from the power supply must be incorporated in the fixed
wiring with a contact opening of >3mm.
◆Do not use an extension cord with this product.
◆If the unit is equipped with a power supply cord and a plug, the plug must
be accessible after installation.
◆This appliance must be installed accordance with the national wiring
regulations.
POWER SUPPLY LINE,
FUSE OR CIRCUIT
BREAKER
Risk of electric shock. • Can cause injury or death. • Disconnect all
remote electric power supplies before servicing, installing or cleaning.
• This must be done by the manufacturer or its service agent or a similar
qualified person in order to avoid a hazard.

E-3
ENGLISH
Contents
◆PREPARING THE INSTALLATION
■Deciding on Where to Install the Air Conditioner.......................................... 4
■Air Conditioner and Accessories................................................................... 8
◆INSTALLING THE INDOOR UNIT
■Installing and Connecting the Outdoor Unit Drain Hose............................... 8
■Cutting/Extending the Piping ........................................................................ 9
◆INSTALLING THE OUTDOOR UNIT
■Connecting the Cables to the Outdoor Unit.................................................. 10
■Transmitter Installation (Optional)................................................................. 13
■Checking Correct Earthing............................................................................ 16
■Fixing the Unit in Position ............................................................................ 16
◆COMPLETING THE INSTALLATION
■Connecting Up and Purging the Circuit......................................................... 17
■Adding Refrigerant ........................................................................................ 18
■Performing Leak Tests ................................................................................. 18
■Pipe Installation with Indoor Units................................................................. 19
■Switch Setting and Testing Operation .......................................................... 20
■Troubleshooting ............................................................................................ 24
■Explaining Operations to the Owner ............................................................. 25
◆COMBINATION TABLE

E-4
Deciding on Where to Install the Air Conditioner
When deciding on the location of the air conditioner with the owner, the following restrictions
must be taken into account.
General
Do NOT install the air conditioner in a location where it will come into contact with the following elements:
◆Combustible gases
◆Saline air
◆Machine oil
◆Sulphide gas
◆Special environmental conditions
If you must install the unit in such conditions, first consult your dealer.
Outdoor Unit
◆The outdoor unit must NEVER be placed on its side or upside down, as the compressor lubrication oil will run into the
cooling circuit and seriously damage the unit.
◆Choose a location that is dry and sunny, but not exposed to direct sunlight or strong winds.
◆Do not block any passageways or thoroughfares.
◆Choose a location where the noise of the air conditioner when running and the discharged air do not disturb any
neighbours.
◆Choose a position that enables the piping and cables to be easily connected to the indoor unit and the recommended
length of 7.5 metres to be respected. (1 Unit)
◆Install the outdoor unit on a flat, stable surface that can support its weight and does not generate any unnecessary
noise and vibration.
◆Position the outdoor unit so that the air flow is directed towards the outside, as indicated by the arrows on the top of
the unit.
◆Maintain sufficient clearance around the outdoor unit, as indicated in the diagram on the page opposite.
◆If the outdoor unit is installed at a height, ensure that its base is firmly fixed in position; the maximum height is
7 metres.
◆Make sure that the water dripping from the drain hose runs away correctly and safely.
PREPARING THE INSTALLATION
◆You have just purchased a Free Joint Multi air conditioner and it has been installed by
your installation specialist.
◆This device must be installed according to the national electrical rules.
◆Max input power & current is measured according to IEC standard and input power &
current is measured according to ISO standard.
CC
CCAA AAUU UUTT TTII IIOO OONN NN

E-5
ENGLISH
PREPARING THE INSTALLATION
160 mm
or more
200 mm
or more
Respect the clearances and maximum lengths indicated in the diagram below when installing the unit.
100 mm
or more
300 mm
minimum
600 mm
minimum
600 mm
minimum
300 mm
minimum
A-unit
B-unit
Main power switch
(h) (H)
◆ MH18VP2X
Indoor unit Outdoor unit Power supply
Ø, V, Hz
MH18VP2-09 MH18VP2X
1,220-240~,50
◆ MH19VP2X
Indoor unit Outdoor unit
MH19VP2-07
MH19VP2-12 MH19VP2X 1,220-240~,50
Power supply
Ø, V, Hz
AB
◗ Piping length and the height
Dimension
Composition
1 Room max
length
20 m
A, B
2 Room total max
length
40 m
A+B
Max height between
indoor units
3m
(h)
Max height between
indoor unit & outdoor unit
15 m
(H)
MH18VP2-09
MH19VP2-07
MH19VP2-12
Liquid
1/4”
Gas
3/8”
Unit Outer Diameter
◗ Piping outside diameter

E-6
Deciding on Where to Install the Air Conditioner (Continued)
PREPARING THE INSTALLATION
1, 220-240, 50
Indoor unit Outdoor unit Power supply
Ø, V, Hz
✴✴20/26/35✴✴ MH052FXEA2
✴✴20/26/35✴✴
Liquid
1/4”
Gas
3/8”
Unit Outside diameter
◗ Piping outside diameter
◗ Piping length and the height
Dimension
Composition
1 Room max
length
20 m
A, B
2 Room total max
length
40 m
A+B
Max height between
indoor units
3 m
(h)
Max height between
indoor unit & outdoor unit
15 m
(H)
160 mm
or more
100 mm
or more
200 mm
or more
300 mm
minimum
600 mm
minimum
600 mm
minimum
300 mm
minimum
Main power switch
(h) (H)
AB
◆ MH052FXEA2
❊ The split type, 1-way cassette indoor units can be installed together.

PREPARING THE INSTALLATION
E-7
ENGLISH
1, 220-240, 50
Indoor unit Outdoor unit Power supply
Ø, V, Hz
✴✴23/26/35/52✴✴ MH068FXEA4
MH080FXEA4
✴✴ 23/
26/35✴✴
✴✴52✴✴
Liquid
1/4”
1/4”
Gas
3/8”
1/2”
Unit Outside diameter
◗ Piping outside diameter
◗ Piping length and the height
Dimension
Composition
1 Room max
length
25 m
A, B, C, D
2 Room total max
length
30 m
A+B
3 Room total max
length
45 m
A + B + C
4 Room total max
length
70 m
A + B + C + D
Max height between
indoor units
3 m
(h)
Max height between
indoor unit & outdoor unit
15 m
(H)
160 mm
or more
100 mm
or more
200 mm
or more
300 mm
minimum
600 mm
minimum
600 mm
minimum
300 mm
minimum
Main power switch
(h) (H)
CD
AB
❊ The split type, 1-way cassette, duct type indoor units can be installed together.
◆ MH068FXEA4 / MH080FXEA4

E-8
Air Conditioner and Accessories
The following accessories are supplied with the air conditioner.
Accessories in the Outdoor Unit Case
3-wire
Power Cable
(option)
Rubber Leg
2-wire
Assembly Cable
(option)
Flare Nuts, 6.35mm
outer pipe diameter
PREPARING THE INSTALLATION
Flare Nuts, 9.52mm
outer pipe diameter
Drain Plug Transmitter power
cable
Installing and Connecting the Outdoor Unit Drain Hose
When using the air conditioner in the heating mode, ice may
accumulate. During de-icing, the condensed water must be drained
off safely. Consequently, you must install a drain hose on the outdoor
unit, following the instructions below.
1Insert the drain plug into the drain hole on the underside of the outdoor unit.
2Connect the drain hose to the drain plug.
3Ensure that the drained water runs off correctly and safely.
Drain hole
OWNER'SINSTRUCTIONS
MANUALDEINSTRUCCIONES
ISTRUZIONIPERL'USO
MANUALDEINSTRUÇÕES
MANUELD'UTILISATION
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
Splut-typeRoomAirConditioner
AireacondicionadodomésticosistemaSplit
Condizionatored'ariaperambientiadunitàSeparate
AparelhodearcondicionadotipoSplit
Climatiseurdetypeséparé
Geteilteraumklimaanlage
Geteilteraumklimaanlage
Installation Manual
➢The 3-wire power cable and the 2-wire assembly cable are optional. If these cables are not
supplied, use the standard cable approved by IEC standard.
3-wire
Power Cable
(option)
Rubber Leg
2-wire
Assembly Cable
(option)
Flare Nuts, 6.35mm
outer pipe diameter Flare Nuts, 9.52mm
outer pipe diameter Flare Bolt
(Nut 1/2”, Bolt 3/8”)
Drain Plug Transmitter power
cable
The specification for cables :
Use
3-wire power cable for main power supply
3-wire power cable for indoor power supply
2-wire assembly cable for communication
AWG
13 or fewer
16 or fewer
16 or fewer
Cross sectional area (mm2)
2.5 or more
1.5 or more
1.5 or more
OWNER'SINSTRUCTIONS
MANUALDEINSTRUCCIONES
ISTRUZIONIPERL'USO
MANUALDEINSTRUÇÕES
MANUELD'UTILISATION
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
Splut-typeRoomAirConditioner
AireacondicionadodomésticosistemaSplit
Condizionatored'ariaperambientiadunitàSeparate
AparelhodearcondicionadotipoSplit
Climatiseurdetypeséparé
Geteilteraumklimaanlage
Geteilteraumklimaanlage
Installation Manual
Energy Label
Energy Label
◆ MH18VP2X / MH19VP2X / MH052FXEA2
◆ MH068FXEA4 / MH080FXEA4
❋ Attach Energy Label to the outdoor unit properly when installing.
❋ Attach Energy Label to the outdoor unit properly when installing.

E-9
ENGLISH
INSTALLING THE INDOOR UNIT
Cutting/Extending the Piping
1 Make sure that you have the required tools available (pipe cutter, reamer,
flaring tool and pipe holder).
2 If you wish to shorten the piping, cut it using a pipe cutter, taking care to
ensure that the cut edge remains at a 90° angle with the side of the pipe,
and referring to the illustrations below for examples of edges cut correctly
and incorrectly.
3 To prevent any gas from leaking out, remove all burrs at the cut end of the
pipe, using a reamer.
4 Slide a flare nut on to the pipe and modify the flare.
Outer Diameter(D) Depth(A)
6.35 mm 1.3 mm
9.52 mm 1.8 mm
12.70 mm 2.0 mm
5 Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
Inclined Damaged Surface Cracked Uneven Thickness
6
Align the pipes to be connected and tighten the flare nuts first manually and
then with a torque wrench, applying the following torque.
Outer Diameter Torque(kgf•cm)
6.35 mm 140~170
9.52 mm 250~280
12.70 mm 380~420
7 For further details on how to connect up to the outdoor unit and purge the
circuit, refer to page 17.
xx x x
Oblique Rough Burr
90O
Ox x x

Connecting the Cables to the Outdoor Unit
I NSTALLING THE O UTDOOR U NIT
2Connect the assembly cable with the power cable such as figure.
➢Each wire is labelled with the corresponding terminal number.
➢Ensure the wire number of the indoor unit and the terminal
number of the outdoor unit.
1Remove the terminal board cover on the side of the outdoor unit.
2 electric cables must be connected to the outdoor unit:
◆
The assembly cable connecting the indoor unit to the outdoor unit.
◆ The power cable connecting the auxiliary circuit breaker to the
outdoor unit.
3Connect the earth wires to the earth terminals.
➢Refer to the page 16 for further details on how to check
that earthing is correct.
4Fix the cables with cable clamps near terminal blocks to protect the wire
connection to the terminals from force on the wire.
5Replace the terminal board cover, carefully tightening the screw.
6Connect the power cable to the auxiliary circuit breaker.
❊ The designs and shape are subject to
change according to the model.
The specification for cables :
Use
Main Power Supply 3-wire power cable
Indoor Power Supply 3-wire power cable
2-wire assembly cable
AWG
13 or fewer
16 or fewer
16 or fewer
Type Cross sectional area (mm2)
2.5 or more
1.5 or more
1.5 or more
1(L) 2(N) 1(L) 2(N)
F1 F2 F1 F2
L N
F12(N)1(L) F2
F1 F2
F1 F2
12E
E
2
1
F12(N)1(L) F2
12E
E
F1 F2
F1 F2
12
12E
B CB C
A
Indoor unit
Outdoor unit
Assembly cable
AB AB
Earth
terminal Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Cable Type: A
Cable Type: B
Cable Type: C
Main Power
supply cable
Power cable to indoor units Communication cable
to indoor units
A-unit B-unit
A
B
C
A
B
C
◆ MH18VP2X / MH19VP2X / MH052FXEA2
E-10

E-11
ENGLISH
INSTALLING THE OUTDOOR UNIT
The specification for cables :
Use
Main Power Supply 3-wire power cable
Indoor Power Supply 3-wire power cable
2-wire assembly cable
AWG
13 or fewer
16 or fewer
16 or fewer
Type Cross sectional area (mm2)
2.5 or more
1.5 or more
1.5 or more
1(L) 2(N) 1(L) 2(N) 1(L) 2(N) 1(L) 2(N)
F1 F2 F1 F2
L N
F12(N)1(L) F2
12E
E
12
F1 F2
F1 F2
F12(N)1(L) F2
F1 F2
F1 F2
12E
E
2
1
F12(N)1(L) F2
12E
E
F1 F2
F1 F2
F12(N)1(L) F2
F1 F2
F1 F2
12E
E
2
112
12E
B
C B CB C B C
A
Indoor unit
Outdoor unit
Assembly cable
ABCD AB
CD
Earth
terminal Earth terminal Earth terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Earth
terminal
Cable Type: A
Cable Type: B
Cable Type: C
Main Power
supply cable
Power cable to indoor units Communication cable
to indoor units
A-unit B-unit C-unit D-unit
A
B
C
A
B
C
◆ MH068FXEA4 / MH080FXEA4

E-12
Connecting the Cables to the Outdoor Unit (Continued)
I NSTALLING THE O UTDOOR U NIT
1 2 E
L (mm)
◗ Main power supply cable : L(mm)
Preparation of cables for outdoor unit terminal block
Cable of
indoor unit
Main Power 20 20 90
1
2
E
◗ Power cable to indoor units : L(mm)
Cable of
indoor unit
For
✴✴068 / 080✴✴
only
For
✴✴068 / 080✴✴
only
Remark
For
✴✴068 / 080✴✴
only
For
✴✴068 / 080✴✴
only
Remark
A
B
C
D
60
60
70
90
60
60
70
90
80
80
110
90
1
2
E
◗ Communication cable to indoor units : L(mm)
Cable of
indoor unit
A
B
C
D
15 15
1
2
❊ The designs and shape are subject to
change according to the model.

E-13
ENGLISH
2Attach the transmitter PCB to the case in the control box in the outdoor
unit, then connect the power and the communication cable between the
transmitter and the outdoor unit; refer to the figure of page 15.
1Fix the case at 3 hinges on the side of the control box in the outdoor unit.
(See the picture)
3If you install a transmitter to an outdoor unit, every indoor unit which is
connected to an outdoor unit can be controlled simultaneously.
4Each outdoor unit connected to the same centralized controller has its
own transmitter.
INSTALLING THE OUTDOOR UNIT
Fix the case with hinges
(Control Box in the outdoor unit)
7seg. LED
Display side
Accessories (Transmitter)
Accessories (Outdoor Unit)
OWNER'S INSTRUCTIONS
MANUALDEINSTRUCCIONES
ISTRUZIONI PER L'USO
MANUALDE INSTRUÇÕES
MANUELD'UTILISATION
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
Splut-typeRoomAirConditioner
AireacondicionadodomésticosistemaSplit
Condizionatored'ariaperambientiadunitàSeparate
AparelhodearcondicionadotipoSplit
Climatiseurdetypeséparé
Geteilteraumklimaanlage
Geteilteraumklimaanlage
Case Cable-tie
Installation Manual
Transmitter Transmitter power
cable
Transmitter
communication cable
Transmitter power
cable
3-wire
Power Cable
(option)
Rubber Leg
2-wire
Assembly Cable
(option)
Flare Nuts, 6.35mm
outer pipe diameter Flare Nuts, 9.52mm
outer pipe diameter
Drain Plug
◆ MH18VP2X / MH19VP2X / MH052FXEA2
Transmitter Installation (Optional)
Energy Label

Transmitter Installation (Optional) (Continued)
I NSTALLING THE O UTDOOR U NIT
E-14
Accessories (Transmitter)
Accessories (Outdoor Unit)
2Attach the transmitter PCB to the case in the control box in the outdoor
unit, then connect the power and the communication cable between the
transmitter and the outdoor unit; refer to the figure of page 15.
1Fix the case with bolts on the control box in the outdoor unit.
(See the picture)
3If you install a transmitter to an outdoor unit, every indoor unit which is
connected to an outdoor unit can be controlled simultaneously.
4Each outdoor unit connected to the same centralized controller has its
own transmitter.
OWNER'S INSTRUCTIONS
MANUAL DEINSTRUCCIONES
ISTRUZIONI PERL'USO
MANUAL DE INSTRUÇÕES
MANUEL D'UTILISATION
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
GEBRAUCHSANWEISUNG
Splut-typeRoomAirConditioner
AireacondicionadodomésticosistemaSplit
Condizionatored'ariaperambientiadunitàSeparate
AparelhodearcondicionadotipoSplit
Climatiseurdetypeséparé
Geteilteraumklimaanlage
Geteilteraumklimaanlage
Case Cable-tie
Installation Manual
Transmitter Transmitter power
cable
Transmitter
communication cable
Fix the case with bolts
(Control Box in the outdoor unit)
7seg. LED
Display side
Terminal
side
Bolts spec.
M4
Transmitter
Flare Bolt
(Nut 1/2”, Bolt 3/8”)
Transmitter power
cable
3-wire
Power Cable
(option)
Rubber Leg
2-wire
Assembly Cable
(option)
Flare Nuts, 6.35mm
outer pipe diameter Flare Nuts, 9.52mm
outer pipe diameter
Drain Plug
◆ MH068FXEA4 / MH080FXEA4
Energy Label

INSTALLING THE OUTDOOR UNIT
E-15
ENGLISH
CN03
(Blue)
Transmitter power cable
(Accessory in the outdoor unit)
Transmitter communication cable
(Accessory in the transmitter)
Terminal Block in the outdoor unit Terminal Block in the outdoor unit
Center
Controller Outdoor unit PCB
Transmitter
PCB
One housing is used for connection
although there are 2 housings on
the communication cable.
CN59
(White)
Change DIP switch-K2 in all
indoor units PCB (K2 : ON →→ OFF)
K1 K2 K3 K4
❊ The designs and shape are subject to
change according to the model.
MH068FXEA4/MH080FXEA4 MH18VP2X/MH19VP2X/MH052FXEA2

E-16
Checking Correct Earthing
Fixing the Unit in Position
If the power distribution circuit does not have an earth or the earth
does not comply with specifications, an earthing electrode must be
installed. The corresponding accessories are not supplied with the
air conditioner.
I NSTALLING THE O UTDOOR U NIT
Carbon
plastic Steel core
PVC-insulated green/
yellow wire, 2mm2x 3.5 m
To
earthing
screw
50 cm
30 cm
‘X’mm
Rubber leg
‘Y’mm
The outdoor unit must be installed on a rigid and stable base to
avoid any increase in the noise level and vibration, particularly if the
outdoor unit is to be installed close to a neighbour.
If it is to be installed in a location exposed to strong winds or at a height,
the unit must be fixed to an appropriate support (wall or ground).
Model X
MH18VP2X
MH19VP2X
MH052FXEA2
MH068FXEA4
MH080FXEA4
660
660
Y
330
350
1Select an earthing electrode that complies with the specifications given in
the illustration opposite.
2Determine a suitable location for the earthing electrode:
◆In damp hard soil rather than loose sandy or gravel soil that has a
higher earthing resistance
◆Away from underground structures or facilities, such as gas pipes,
water pipes, telephone lines and underground cables
◆At least two meters away from a lightening conductor earthing
electrode and its cable
➢The earthing wire for the telephone line cannot be used to
earth the air conditioner.
3Dig a hole of the size indicated in the illustration opposite, drive the
earthing electrode into position and cover the top of the electrode
with the excavated soil.
5Carefully check the installation, by measuring the earthing resistance with
an earthing resistance tester. If the resistance is above the required
level(Example:100Ω), drive the earthing electrode deeper into the ground
or increase the number of earthing electrodes.
6Connect the earthing wire to the earthing screw on the air conditioner.
4Install a green/yellow insulated earthing wire (
Ø 1.6 mm, section 2 mm
2
or
greater):
◆If the earthing wire is too short, connect an extension lead, soldering
the connection and wrapping it with insulating tape (do not bury the
soldered connection)
◆Secure the earthing wire in position with staples
➢If the earthing electrode is installed in an area of heavy traffic,
its wire must be connected securely.
1Position the outdoor unit so that the air flow is directed towards the
outside, as indicated by the arrows on the top of the unit.
2Attach the outdoor unit to the appropriate support using anchor bolts.
3If the outdoor unit is exposed to strong winds, install shield plates around
the outdoor unit, so that the fan can operate correctly.
➢ Certainly fix up its rubber leg in order to prevent its vibration
and noise.

E-17
ENGLISH
C OMPLETING THE I NSTALLATION
Connecting Up and Purging the Circuit
◆ MH068FXEA4 / MH080FXEA4
The air in the indoor unit and in the pipe must be purged. If air remains in the
refrigeration pipes, it will affect the compressor, reduce to cooling/heating capacity and
could lead to a malfuction. Refrigerant for air purging is not charged in the outdoor unit.
Use Vacuum Pump as shown at the right figure. Each unit must be purged in turn.
CC
CCAA AAUU UUTT TTII IIOO OONN NN
◆ MH18VP2X / MH19VP2X / MH052FXEA2
Stem cap
Service port
Valve stem
A
BCD
Vacuum
Pump
Indoor
A-unit
Indoor
B-unit
Vacuum
Pump
Service port
Valve stem
Stem cap
1Check the piping connections.
2Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port (3/8”service valve) as shown at the
figure.
3Open the valve of the low pressure side of manifold gauge
counter-clockwise.
5Set valve cork of both liquid side and gas side of packed valve to the open
position.
6Mount the valve stem nuts and the service port cap to the valve,
and tighten them at the torque of 183kgf
•cm with a torque wrench.
7Check for gas leakage.
- At this time, especially check for gas leakage from the 3-way valve’s
stem nuts, and from the service port cap.
4Purge the air from the system using vacuum pump for about 10 minutes.
- Close the valve of the low pressure side of manifold gauge clockwise.
-
Make sure that pressure gauge show -0.1MPa(-76cmHg) after about
10 minutes.
This procedure is very important in order to avoid gas leak.
-
Turn off the vacuum pump
- Remove the hose of the low pressure side of manifold gauge.
1Check the piping connections.
2Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port (5/8”Packed valve) as shown at the
figure (Value stem: 1/2”-20UNF).
3Open the valve of the low pressure side of manifold gauge
counter clockwise.
5Set valve cork of both liquid side and gas side of packed valve to the open
position.
6Mount the valve stem nuts and the service port cap to the valve,
and tighten them at the torque of 183kgf
•cm with a torque wrench.
7Check for gas leakage.
- At this time, especially check for gas leakage from the 3-way valve’s
stem nuts, and from the service port cap.
4Purge the air from the system using vacuum pump for about 30 minutes.
- Close the valve of the low pressure side of manifold gauge clockwise.
- Make sure that pressure gauge show -0.1MPa(-76cmHg) after about
30 minutes.
This procedure is very important in order to avoid gas leak.
- Turn off the vacuum pump.
- Remove the hose of the low pressure side of manifold gauge.

E-18
Adding Refrigerant
C OMPLETING THE I NSTALLATION
If you install the excessive length of pipe, add additional refrigerant as 15g per unit
meter ; refer to the table below.
Refer to the Service Manual for more details on this operation.
Total connecting pipe length(L)
Model
MH18VP2X
MH19VP2X
MH052FXEA2
MH068FXEA4
MH080FXEA4
LT≤20m
LT> 20m
LT≤40m
LT> 40m
Chargeless
(LT- 20m)x15g
Chargeless
(LT- 40m)x15g
Adding refrigerant
Performing Leak Tests
To check for gas leaks on the... Then, using a leak detector,
check the...
Indoor unit Flare nuts at the end of sections
C and D.
Outdoor unit Valves on sections A and B.
Before completing the installation (insulation of the cables, hose and
piping and fixing of the indoor unit to the installation plate), you
must check that there are no gas leaks.
A
AB
CD
MH068FXEA4 / MH080FXEA4
MH18VP2X / MH19VP2X / MH052FXEA2

E-19
ENGLISH
C OMPLETING THE I NSTALLATION
Pipe Installation with Indoor Units
Follow different orders depending on the capacity of indoor units.
MH026/035F ✴ EA
◆Install pipes between indoor and outdoor units orderly as [A →→B →→C →→D].
MH052F ✴ EA
◆Install pipes between indoor and outdoor units orderly as [D →→C].
Examples
◆2Rooms : MH035FPEA + MH052FPEA
◆3Rooms : MH026FPEA + MH035FPEA + MH052FPEA
A
B
C
D
MH035FPEA
MH052FPEA
( o )
A
B
C
D
MH026FPEA
MH035FPEA
MH052FPEA
( o )
A
B
C
D
MH035FPEA
MH052FPEA
( x )
A
B
C
D
MH035FPEA
MH052FPEA
( x )
A
B
C
D
MH026FPEA
MH035FPEA
MH052FPEA
( x )
◆ MH068FXEA4 / MH080FXEA4
OUTDOOR UNIT
A unit
B unit
C unit
D unit
❊ The pinch pipe is installed initially on the
part A.
Flare nut
❊ If the pinch pipe is not installed, please
screw the part A using the flare nut of the
part B, C, or D.

E-20
Switch Setting and Testing Operation
C OMPLETING THE I NSTALLATION
K 1 K 2 K 3
(OFF)
DIS01
SW02 SW01
K 4
DIS02
To complete the installation, perform the following checks and tests
to ensure that the air conditioner is operating correctly.
Step 1 Review all the following elements in the installation:
◆Installation site strength
◆Piping connection tightness to detect any gas leakage
◆Connection wiring
◆Heat-resistant insulation of the piping
◆Drainage
◆Earthing wire connection
Step 2 Check the room select switch in the indoor unit and in the outdoor unit.
Set the switch properly as below. (For example: 2 Rooms)
◆The liquid and gas refrigerant pipes should not be crossed with each other.
◆The switch for the indoor unit address setting is in each indoor unit PCB.
◆The manual addressing number of the indoor unit must be set as above.
(A unit
➝
0, B unit
➝
1)
◆It could take more time depending on the indoor and outdoor temperature.
◆If the checking is finished, outdoor unit stops automatically.
◆[DIS 02] shows the indoor unit under searching.
◆Function of Step 3
Step 3 Automated checking of pipe connection (Auto addressing option)
◆Apply the power to the outdoor unit.
◆Push the [K2] button 4 times in the outdoor PCB display.
A unitIndoor unit
Manual Addressing
(For example: 2Rooms)
Auto Addressing
(For example: 2Rooms)
B unit
SW02
SW02
SW02
SW02
SW 01Outdoor unit
Manual Addressing
(For example: 2Rooms)
Auto Addressing
(For example: 2Rooms)
SW 02
Button [K2] 4 times
Display
Time duration
DIS 01
15°C or more
(Cool mode)
3 min ~ 5 min (Heat mode) 20 min ~ 30 min
Less than 15°C
Outdoor Temperature
[DIS 01] is flickering on the setting time.
DIS 02
Outdoor PCB Display FunctionMode
Auto Addressing
Manual Addressing
Checking the connection & addressing
Checking the connection only
◆ MH18VP2X / MH19VP2X / MH052FXEA2
OUTDOOR UNIT
A unit
B unit