Samsung AC120MXADKH, AC100MXADKH, AC100MXADNH, AC120MXADNH, AC120MXASEH Installation Manual

Air conditioner

Installation manual

AC777MXAD7H / AC777MXAS7H

• Thank you for purchasing this Samsung air conditioner.

• Before operating this unit, please read this manual carefully and retain it for future
reference.

2 English

Contents

Safety Information 3

General information 3
Installing the unit 4
Power supply line, fuse or circuit breaker 4

Installation Procedure 5

Step 1 Choosing the installation location 5
Step 2 Fixing the outdoor unit in place 8
Step 3 Connecting the power cables, communication cable, and controllers 9
Step 4 Optional: Extending the power cable 14
Step 5 Connecting the refrigerant pipe 16
Step 6 Optional: Cutting and flaring the pipes 17
Step 7 Installing oil traps 18
Step 8 Connecting up and removing air in the circuit 18
Step 9 Adding refrigerant (R-410A) 19
Step 10 Performing the gas leak test 22
Step 11 Connecting the drain hose to the outdoor unit 23
Step 12 Insulating the refrigerant pipes 23
Step 13 Checking the earthing 24
Step 14 Performing final check and trial operation 25

Extra procedures 28

Pumping down refrigerant 28
Relocating the indoor and outdoor units 28
Using the stop valve 29

Appendix 30

Troubleshooting 30
Technical specifications 31
COMMISSION DELEGATED REGULATION (EU) No 626/2011

i)

32

For information on Samsung’s environmental commitments and product specific regulatory obligations e.g. REACH
visit: samsung.com/uk/aboutsamsung/samsungelectronics/corporatecitizenship/data_corner.html

3English

Safety Information

Safety Information

WARNING

• Hazards or unsafe practices that may result in severe

personal injury or death.

CAUTION

• Hazards or unsafe practices that may result in minor

personal injury or property damage.

Carefully follow the precautions listed below because
they are essential to guarantee the safety of the
equipment.

WARNING

• Always disconnect the air conditioner from the power

supply before servicing it or accessing its internal
components.

• Verify that installation and testing operations are

performed by qualified personnel.

• Verify that the air conditioner is not installed in an

easily accessible area.

General information

WARNING

• Carefully read the content of this manual before

installing the air conditioner and store the manual in
a safe place in order to be able to use it as reference
after installation.

• For maximum safety, installers should always

carefully read the following warnings.

• Store the operation and installation manual in a safe

location and remember to hand it over to the new
owner if the air conditioner is sold or transferred.

• This manual explains how to install an indoor unit

with a split system with two SAMSUNG units. The use
of other types of units with different control systems
may damage the units and invalidate the warranty.
The manufacturer shall not be responsible for
damages arising from the use of non compliant units.

• The manufacturer shall not be responsible for damage
originating from unauthorized changes or the
improper connection of electric and requirements set
forth in the “Operating limits” table, included in the
manual, shall immediately invalidate the warranty.

• The air conditioner should be used only for the
applications for which it has been designed: the
indoor unit is not suitable to be installed in areas
used for laundry.

• Do not use the units if damaged. If problems occur,
switch the unit off and disconnect it from the power
supply.

• In order to prevent electric shocks, fires or injuries,
always stop the unit, disable the protection switch
and contact SAMSUNG’s technical support if the unit
produces smoke, if the power cable is hot or damaged
or if the unit is very noisy.

• Always remember to inspect the unit, electric
connections, refrigerant tubes and protections
regularly. These operations should be performed by
qualified personnel only.

• The unit contains moving parts, which should always
be kept out of the reach of children.

• Do not attempt to repair, move, alter or reinstall the
unit. If performed by unauthorized personnel, these
operations may cause electric shocks or fires.

• Do not place containers with liquids or other objects
on the unit.

• All the materials used for the manufacture and
packaging of the air conditioner are recyclable.

• The packing material and exhaust batteries of the
remote controller(optional) must be disposed of in
accordance with current laws.

• The air conditioner contains a refrigerant that has
to be disposed of as special waste. At the end of its
life cycle, the air conditioner must be disposed of in
authorized centres or returned to the retailer so that
it can be disposed of correctly and safely.

4

Safety Information

English

Safety Information

• This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a
person responsible for their safety. Children should
be supervised to ensure that they do not play with
the appliance.

• For use in Europe: This appliance can be used by
children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities
or lack of experience and knowledge if they have
been given supervision or instruction concerning use
of the appliance in a safe way and understand the
hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance shall not be
made by children without supervision.

Installing the unit

WARNING

IMPORTANT: When installing the unit, always remember
to connect first the refrigerant tubes, then the electrical
lines.

• Upon receipt, inspect the product to verify that
it has not been damaged during transport. If the
product appears damaged, DO NOT INSTALL it and
immediately report the damage to the carrier or
retailer (if the installer or the authorized technician
has collected the material from the retailer.)

• After completing the installation, always carry out a
functional test and provide the instructions on how to
operate the air conditioner to the user.

• Do not use the air conditioner in environments with
hazardous substances or close to equipment that
release free flames to avoid the occurrence of fires,
explosions or injuries.

• Our units should be installed in compliance with the
spaces shown in the installation manual, to ensure
accessibility from both sides and allow repairs
or maintenance operations to be carried out. The
unit’s components should be accessible and easy to
disassemble without endangering people and objects.

• For this reason, when provisions of the installation
manual are not complied with, the cost required to
access and repair the units (in SAFETY CONDITIONS,
as set out in prevailing regulations) with harnesses,
ladders, scaffolding or any other elevation system
will NOT be considered part of the warranty and will
be charged to the end customer.

Power supply line, fuse or circuit
breaker

WARNING

• Always make sure that the power supply is compliant
with current safety standards. Always install the air
conditioner in compliance with current local safety
standards.

• Always verify that a suitable earthing connection is
available.

• Verify that the voltage and frequency of the power
supply comply with the specifications and that the
installed power is sufficient to ensure the operation
of any other domestic appliance connected to the
same electric lines.

• Always verify that the cut-off and protection switches
are suitably dimensioned.

• Verify that the air conditioner is connected to the
power supply in accordance with the instructions
provided in the wiring diagram included in the
manual.

• Always verify that electric connections (cable entry,
section of leads, protections…) are compliant with
the electric specifications and with the instructions
provided in the wiring scheme. Always verify that all
connections comply with the standards applicable to
the installation of air conditioners.

• Devices disconnected from the power supply should
be completely disconnected in the condition of
overvoltage category.

• Be sure not to perform power cable modification,
extension wiring, and multiple wire connection.

– It may cause electric shock or fire due to

poorconnection, poor insulation, or current limit
override.

– When extension wiring is required due to power

line damage, refer to "Step 4 Optional: Extending
the power cable" in the installation manual.

5English

Installation Procedure

Installation Procedure

Step 1 Choosing the installation
location

Installation location requirements

• Do not place the outdoor unit on its side or upside
down. Failing to do so may cause the compressor
lubrication oil to run into the cooling circuit and lead
to a serious damage to the unit.

• Install the unit in a well-ventilated location away
from direct sunlight or strong winds.

• Install the unit in a location that would not obstruct
any passageways or thoroughfares.

• Install the unit in a location that would not
inconvenience or disturb your neighbors, as they
could be affected by the noise or the airflow coming
from the unit.

• Install the unit in a location where the pipes and the
cables can be easily connected to the indoor unit.

• Install the unit on a flat, stable surface that can
withstand the weight of the unit. Otherwise, the unit
can generate noise and vibration during operation.

• Install the unit so that the air flow is directed towards
the open area.

• Maintain sufficient clearance around the outdoor unit,
especially from a radio, computer, stereo system, etc.

Fuse

Control

1 m or more

1 m or more

1.5 m or more

1.5 m or more

300 mm

Stereo

Computer etc

Outdoor Unit

200 mm

Air Guide Duct (This product is not provided by Samsung)

Indoor Unit

• Install the unit at a height where its base can be
firmly fixed in place.

• Make sure that the water dripping from the drain
hose runs away correctly and safely.

CAUTION

• You have just purchased a system air conditioner
and it has been installed by your installation
specialist.

• This device must be installed according to the
national electrical rules.

• If your outdoor unit exceeds a net weight of 60 kg,
do not install it on a suspended wall, but stand it
on a floor.

• When installing the outdoor unit at the seaside, make
sure that it is not directly exposed to sea breeze. If
you cannot find an adequate place free from direct
sea breeze, construct a protection wall or a protective
fence.

– Install the outdoor unit in a place (such as near

buildings etc.) where it can be prevented from sea
breeze. Failure to do so may cause a damage to
the outdoor unit.

Sea breeze Sea breeze

Sea Sea

Outdoor Unit Outdoor Unit

• If you cannot avoid installing the outdoor unit at the
seaside, construct a protection wall around to block
the sea breeze.

• Construct a protection wall with a solid material such
as concrete to block the sea breeze. Make sure that the
height and the width of the wall are 1.5 times larger
than the size of the outdoor unit. Also, secure a space
larger than 700 mm between the protection wall and
the outdoor unit for exhausted air to ventilate.

Protection wall

Outdoor Unit

Sea breeze

Sea

6

Installation Procedure

English

Installation Procedure

CAUTION

• Depending on the condition of power supply, unstable
power or voltage may cause malfunction of the parts
or control system. (At the ship or places using power
supply from electric generator...etc)

• Install the unit in a place where water can drain
smoothly.

• If you have any difficulty finding installation location
as prescribed above, contact your manufacturer for
details.

• Be sure to clean the sea water and the dust on the
heat exchanger of the outdoor unit and apply a
corrosion inhibitor on it. (At least once in a year.)

Outdoor unit dimensions

A Type

AC090MXADKH/AC090MXADNH/AC100MXADKH/
AC100MXADNH/AC120MXADKH/AC120MXADNH/
AC120MXASEH

998

977

537

528

620

940

330

384

360

675

B Type

AC140MXADKH/AC140MXADNH

620

330

384

360

1210

1185

940

567

558

675

Minimum clearances for the outdoor unit

When installing 1 outdoor unit

(Unit: mm)

300 or more

1500 or more

300 or

more

600 or

more

300 or

more

2000

or more

1500

or more

600

or more

300

or more

1500

or more

300 or

more

When installing more than 1 outdoor unit

(Unit: mm)

1500

or more

600

or more

3000

or more

3000

or more

300

or more

600

or more

600

or more

1500

or more

300

or more

1500

or more

600

or more

600

or more

7English

Installation Procedure

300
or more

600

or more

600

or more

600

or more

300

or more

300 or more

300 or more

500 or more 500 or more

CAUTION

• The outdoor unit must be installed according to the
specified distances in order to permit accessibility
from each side, to guarantee correct operation,
maintenance, and repair of the unit.
The components of the outdoor unit must be
reachable and removable under safe conditions for
people and the unit.

WARNING

• Should adopt bar type louver. Don’t use a type of rain
resistance louver.

[Bar type louver] [Rain resistance louver]

• Louver specifications.

– Angle criteria : less than 20°
– Opening ratio criteria : greater than 80%

Moving the outdoor unit with wire rope

1 Before carrying the outdoor unit, fasten two wire

ropes of 8 m or longer, as shown in the figure.

2 To prevent damages or scratches effectively, insert

a piece of cloth between the outdoor unit and the
ropes.

3 Move the outdoor unit.

Wire rope

Plate protection
cloth

8

Installation Procedure

English

Installation Procedure

Step 2 Fixing the outdoor unit in place

Install the outdoor unit on a rigid and stable base to
prevent disturbance from any noise caused by vibration.
When installing the unit at a height or in a location
exposed to strong winds, fix the unit securely to a
support (i.e., a wall or a ground).

Fix the outdoor unit with anchor bolts. Make sure that
the anchor bolts are 20 mm or higher from the base
surface.

(Unit : mm)

Anchor bolt hole

CAUTION

• Install a drain outlet at the lowest end around the
base for outdoor unit drainage

• When installing the outdoor unit on the roof,
waterproof the unit and check the ceiling strength.

• Make sure that the wall can support the weights of
the rack and the outdoor unit.

• Install the rack close to the column as much as
possible.

Optional: Fixing the outdoor unit to a wall with
a rack

Soft rubber designed to cut off vibration from
rack to wall. (not supplied with product)

Designed to cut off residual vibration from
outdoor unit to rack. (not supplied with product)

Anchor bolt

Base surface

20 mm

• Install a proper grommet in order to reduce noise and
residual vibration transferred by the outdoor unit
towards the wall.

CAUTION

• When installing an air guide duct, be sure to check
the following:

– The screws do not damage the copper pipe.
– The air guide duct is fixed firmly on the guard fan.

9English

Installation Procedure

Step 3 Connecting the power cables,
communication cable, and controllers

You must connect the following three electrical cables to
the outdoor unit:

• The main power cable between the auxiliary circuit
breaker and the outdoor unit.

• The outdoor-to-indoor power cable between the
outdoor unit and the indoor unit.

• The communication cable between the outdoor unit
and the indoor unit.

CAUTION

• During installation, make first the refrigerant
connections and then the electrical connections. If
the unit is uninstalled, first disconnect the electrical
cables and then the refrigerant connections.

• Connect the air conditioner to the earthing system
before making the electrical connections.

NOTE

• Especially, if your outdoor unit is the one designed
for Russian and European markets, consult the supply
authority, if necessary, to estimate and reduce the
supply system impedance before installation.

Air conditioning system examples

When using earth leakage circuit breaker (ELCB) for a
single phase

MCCB

1

ELB

Main power
cable

Communication cable
Outdoor-to-indoor power cable

Earthing

Outdoor Unit

OR

Indoor Unit

ELCB

1

When using earth leakage circuit breaker (ELCB) for a
3-phase, 4-wire system (3P4W)

ELB

Main power
cable

Communication cable
Outdoor-to-indoor power cable

Earthing

Outdoor Unit

OR

Indoor Unit

MCCB

3

ELCB

3

CAUTION

• If the outdoor unit is installed in a location vulnerable
to an electric leak or submergence, make sure to
install an ELCB.

10

Installation Procedure

English

Installation Procedure

Connecting the main power cable

When using ELB for 1 phase and 3 phase

1(L) 2(N) L1(R) L2(S) L3(T) N

F1 F2

1(L) 2(N) L N

F1 F2

MCCB

ELB

Power supply

Electrical

component box

The appearance of the unit may be
different from the picture depending
on the model.

Indoor Unit

1-phase

3-phase

Main power
cable

Communication cable

Communication

cable

3-phase 4-wire
main power cable
(AC 380V)

Outdoor-to­indoor power
cable

Outdoor-to­indoor power
cable

Cable tie

Cable tie

CAUTION

• You should connect the power cable into the power cable terminal and fasten it with a clamp.

• The unbalanced power must be maintained within 2% of supply rating.
If the power is unbalanced greatly, it may shorten the life of the condenser. If the unbalanced power is

exceeded over 4% of supply rating, the indoor unit is protected, stopped and the error mode indicates.

• To protect the product from water and possible shock, you should keep the power cable and the connection cord of
the indoor and outdoor units within ducts. (with appropriate IP rating and material selection for your application)

• Ensure that main supply connection is made through a switch that disconnects all poles, with contact gap of a least 3 mm.

• Devices disconnected from the power supply should be completely disconnected in the condition of overvoltage category.

• Keep distances of 50 mm or more between power cable and communication cable.

11English

Installation Procedure

Main power terminal block specifications

• 1-phase terminal block specifications

AC090/100/120/140MXADKH, AC120MXASEH

1(L) 2(N)

F1 F2

LN

15 12 11.4

10.1

• 3-phase terminal block specifications

AC090/100/120/140MXADNH

1(L) 2(N) L1(R) L2(S) L3(T) N

9.95 11.55 10.1

F1 F2

11.4

Main power cable specifications

The power cable is not supplied with air conditioner.

• Select the power supply cable in accordance with relevant local and national regulations.

• Wire size must comply with the applicable local and national code.

• Specifications for local wiring power cord and branch wiring are in compliance with local cord.

Single phase

Indoor unit Outdoor unit Hz Volts Min. Max. Cooling Heating Indoor unit Total MCA MFA

AC090MN4DKH

AC090MXADKH

50 220 to 240 198 264 24.0 24.0 1.0 25.0 25.0 30.0

AC090MN4PKH

50 220 to 240 198 264 24.0 24.0 1.5 25.5 25.5 30.0

AC090MNMDKH

50 220 to 240 198 264 24.0 24.0 2.5 26.5 26.5 30.0

AC100MN4DKH

AC100MXADKH

50 220 to 240 198 264 24.0 24.0 1.0 25.0 25.0 30.0

AC100MN4PKH

50 220 to 240 198 264 24.0 24.0 1.5 25.5 25.5 30.0

AC100MNMDKH

50 220 to 240 198 264 24.0 24.0 2.5 26.5 26.5 30.0

AC100MNCDKH

50 220 to 240 198 264 24.0 24.0 2.0 26.0 26.0 30.0

AC100MNTDEH

50 220 to 240 198 264 24.0 24.0 1.1 25.1 25.1 30.0

AC120MN4DKH

AC120MXADKH

50 220 to 240 198 264 24.0 24.0 1.0 25.0 25.0 30.0

AC120MN4PKH

50 220 to 240 198 264 24.0 24.0 1.5 25.5 25.5 30.0

AC120MNMDKH

50 220 to 240 198 264 24.0 24.0 2.5 26.5 26.5 30.0

AC120MNCDKH

50 220 to 240 198 264 24.0 24.0 2.0 26.0 26.0 30.0

AC120MNMSEH

AC120MXASEH 50 220 to 240 198 264 24.0 24.0 3.5 27.5 27.5 30.0

AC140MN4DKH

AC140MXADKH

50 220 to 240 198 264 32.0 32.0 1.0 33.0 33.0 40.0

AC140MN4PKH

50 220 to 240 198 264 32.0 32.0 1.5 33.5 33.5 40.0

AC140MNMDKH

50 220 to 240 198 264 32.0 32.0 2.5 34.5 34.5 40.0

AC140MNCDKH

50 220 to 240 198 264 32.0 32.0 2.0 34.0 34.0 40.0

3-phase

Indoor unit Outdoor unit Hz Volts Min. Max. Cooling Heating Indoor unit Total MCA MFA

AC090MNMDKH

AC090MXADNH 50 380 to 415 342 456.5 16.1 16.1 2.5 18.6 18.6 18.6

AC100MN4DKH

AC100MXADNH

50 380 to 415 342 456.5 16.1 16.1 1.0 17.1 17.1 17.1

AC100MN4PKH

50 380 to 415 342 456.5 16.1 16.1 1.5 17.6 17.6 17.6

AC100MNMDKH

50 380 to 415 342 456.5 16.1 16.1 2.5 18.6 18.6 18.6

AC100MNCDKH

50 380 to 415 342 456.5 16.1 16.1 2.0 18.1 18.1 18.1

AC100MNTDEH

50 380 to 415 342 456.5 16.1 16.1 1.1 17.2 17.2 17.2

AC120MN4DKH

AC120MXADNH

50 380 to 415 342 456.5 16.1 16.1 1.0 17.1 17.1 17.1

AC120MN4PKH

50 380 to 415 342 456.5 16.1 16.1 1.5 17.6 17.6 17.6

AC120MNMDKH

50 380 to 415 342 456.5 16.1 16.1 2.5 18.6 18.6 18.6

AC120MNCDKH

50 380 to 415 342 456.5 16.1 16.1 2.0 18.1 18.1 18.1

AC140MN4DKH

AC140MXADNH

50 380 to 415 342 456.5 16.1 16.1 1.0 17.1 17.1 17.1

AC140MN4PKH

50 380 to 415 342 456.5 16.1 16.1 1.5 17.6 17.6 17.6

AC140MNMDKH

50 380 to 415 342 456.5 16.1 16.1 2.5 18.6 18.6 18.6

AC140MNCDKH

50 380 to 415 342 456.5 16.1 16.1 2.0 18.1 18.1 18.1

12

Installation Procedure

English

Installation Procedure

NOTE

1 Voltage range

• Units are suitable for use on electrical systems

where voltage supplied to unit terminal is not
below or above listed range limits

2 Maximum allowable voltage variation between

phases is 2%.

3 Wire size & type must comply with the applicable

local and national code.

• Wire size: Based on the value of MCA.

• Wire type: 60245 IEC57(IEC) or H05RN-

F(CENELEC) grade or more.

4 MFA is used to select the circuit breaker and the

ground fault circuit interrupter (earth leakage circuit
breaker).

5 MCA represents maximum input current.

• MFA represents capacity which may accept MCA

• Abbreviations

MCA: Min. Circuit Amps. (A)
MFA: Max. Fuse Amps. (A)

6 This equipment complies with IEC 61000-3-12

provided that the short-circuit power Ssc is greater
than or equal to Ssc (*2) at the interface point
between the user’s supply and the public system.
It is the responsibility of the installer or user of
the equipment to ensure, by consultation with the
distribution network operator if necessary, that the
equipment is connected only to a supply with a short­circuit power Ssc greater than or equal to Ssc(*2).

Model Ssc[MVA]

AC090MXADKH 2.7

AC090MXADNH 1.4

AC100MXADKH 2.7

AC100MXADNH 1.4

AC120MXADKH 1.9

AC120MXADNH 3.0

AC120MXASEH 1.9

AC140MXADKH 0.9

AC140MXADNH 2.9

Silence mode controller wiring diagram
(AC090/100/120/140MXA**H)

Outdoor unit

ASSY Control out

Non-voltage contact

Connecting the outdoor-to-indoor power cable
and the communication cable

1-phase

LN

F1 F2

1(L) 2(N) L N

F1 F2

Outdoor-to-indoor
power cable

For connecting the power and
communication cables

Main power cable Communication cable

Cable tie

Indoor Unit

Outdoor Unit

13English

Installation Procedure

3-phase

LN

F1 F2

1(L) 2(N) L1(R) L2(S) L3(T) N

F1 F2

Indoor Unit

Outdoor-to-indoor
power cable

3-phase 4-wire main
power cable (AC 380V)

Communication
cable

Cable tie

Outdoor Unit

NOTE

• Lay the electrical wiring so that the front cover does
not rise up when doing wiring work and attach the
front cover securely.

• Ground wire for the indoor unit and outdoor unit
connection cable must be clamped to a soft copper
tin-plated eyelet terminal with M4 screw hole(NOT
SUPPLIED WITH UNIT ACCESSORIES).

Outdoor-to-indoor power terminal
specifications

• Connect the cables to the terminal board using the
compressed ring terminal.

• Cover a solderless ring terminal and a connector part
of the power cable and then connect it.

Silver solder

Nominal

dimensions

for cable

(mm²)

Nominal

dimensions

for screw

(mm)

BDd1EFLd2t

Standard

dimension

(mm)

Allowance

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Min.

(mm)

Min.

(mm)

Max.

(mm)

Standard

dimension

(mm)

Allowance

(mm)

Min.

(mm)

4/6

4 9.5

±0.2 5.6

+0.3

-0.2

3.4 ±0.2 6

5 20 4.3

+0.2

0

0.9

8 15 9 28.5 8.4

+0.4

0

10 8 15 ±0.2 7.1

+0.3

-0.2

4.5 ±0.2 7.9 9 30 8.4

+0.4

0

1.15

16 8 16 ±0.2 9

+0.3

-0.2

5.8 ±0.2 9.5 13 33 8.4

+0.4

0

1.45

25

812

±0.3 11.5

+0.5

-0.2

7.7 ±0.2 11

15

34

8.4

+0.4

0

1.7

8 16.5 13 8.4

35

816

±0.3 13.3

+0.5

-0.2

9.4 ±0.2 12.5

13 38 8.4

+0.4

0

1.8

8 22 13 43 8.4

50 8 22 ±0.3 13.5

+0.5

-0.2

11.4 ±0.3 17.5 14 50 8.4

+ 0.4

0

1.8

70 8 24 ±0.4 17.5

+0.5

-0.4

13.3 ±0.4 18.5 20 51 8.4

+ 0.4

0

2.0

14

Installation Procedure

English

Installation Procedure

• Connect the rated cables only.

• Connect using a driver which is able to apply the
rated torque to the screws.

• If the terminal is loose, fire may occur caused by arc.
If the terminal is connected too firmly, the terminal
may be damaged.

Tightening torque (kgf⋅cm)

M4 12.0 to 18.0

M5 20.0 to 30.0

• 1 N⋅m = 10 kgf⋅cm

CAUTION

• When connecting cables, you can connect the cables
to the electrical part or connect them through the
holes below depending on the spot.

• Connect the communication cable between the
indoor and outdoor units through a conduit to protect
against external forces, and feed the conduit through
the wall together with refrigerant piping.

• Remove all burrs at the edge of the knock-out hole
and secure the cable to the outdoor knock-out using
lining and bushing with an electrical insulation such
as rubber and so on.

• Must keep the cable in a protection tube.

• Keep distances of 50mm or more between power
cable and communication cable.

• When the cables are connected through the hole,
remove the Plate bottom.

Outdoor-to-indoor power and communication
cables specifications

Indoor power supply

Power supply Max/Min (V) Indoor power cable

1ø, 220-240V,

50 Hz

±10% 1.5 mm² Ĺ, 3 wires

Communication cable

0.75 to 1.5 mm², 2 wires

• Power supply cords of parts of appliances for
outdoor use shall not be lighter than polychloroprene
sheathed flexible cord. (Code designation IEC:60245
IEC 57 / CENELEC: H05RN-F or IEC:60245 IEC 66 /
CENELEC: H07RN-F)

• When installing the indoor unit in a computer room
or net work room, use the double shielded (tape
aluminium / polyester braid + copper ) cable of
FROHH2R type.

Step 4 Optional: Extending the power
cable

1 Prepare the following tools.

Tools Spec Shape

Crimping pliers MH-14

Connection sleeve

(mm)

20xØ6.5

(HxOD)

Insulation tape

Width 19

mm

Contraction tube

(mm)

70xØ8.0

(LxOD)

2 As shown in the figure, peel off the shields from the

rubber and wire of the power cable.

• Peel off 20 mm of cable shields from the pre-

installed tube.

CAUTION

• For information about the power cable

specifications for indoor and outdoor units, refer
to the installation manual.

• After peeling off cable wires from the pre-installed

tube, insert a contraction tube.

Power cable

(Unit: mm)

20 20 20

60

120

180

Pre-installed tube for the power cable

(Unit: mm)

20

15English

Installation Procedure

3 Insert both sides of core wire of the power cable into

the connection sleeve.

• Method 1: Push the core wire into the sleeve from
both sides.

• Method 2: Twist the wire cores together and push
it into the sleeve.

Connection sleeve Connection sleeve

Method 1 Method 2

4 Using a crimping tool, compress the two points and

flip it over and compress another two points in the
same location.

• The compression dimension should be 8.0.

Compression
dimension

• After compressing it, pull both sides of the wire to
make sure it is firmly pressed.

Compress it 4 times.

5 mm

Compress it 4 times.

5 mm

Method 1 Method 2

5 Wrap it with the insulation tape twice or more and

position your contraction tube in the middle of the
insulation tape.
Three or more layers of insulation are required.

Method 1 Method 2

Insulation tape

40 mm

35 mm

Insulation tape

6 Apply heat to the contraction tube to contract it.

Contraction tube

7 After tube contraction work is completed, wrap it with

the insulation tape to finish.

Insulation tape

CAUTION

• Make sure that the connection parts are not exposed
to outside.

• Be sure to use insulation tape and a contraction tube
made of approved reinforced insulating materials that
have the same level of withstand voltage with the
power cable. (Comply with the local regulations on
extensions.)

WARNING

• In case of extending the electric wire, please DO NOT
use a round-shaped Pressing socket.

– Incomplete wire connections can cause electric

shock or a fire.