Samsung AC100KXADEH, AC100KNPDEH, AC140KXADGH, AC140KXPDEH Installation Manual

Air conditgioner

User manual/Installation manual

AR✴✴HVSD✴✴

• Thank you for purchasing this Samsung air conditioner.

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

Air conditioner

Installation manual

AC✴✴✴KNPDEH/AC✴✴✴KXAD✴H

• Thank you for purchasing this Samsung air conditioner.

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

Contents

English

Contents

Safety Information 3

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

Installation Procedure 6

Step 1 Choosing the installation location
Step 2 Unpacking
Step 3 Checking and preparing accessories
Step 4 Drilling a hole through a wall
Step 5 Taping the pipes, cables, and drain hose
Step 6 Connecting the refrigerant pipes
Step 7 Optional: Cutting and flaring the pipes
Step 8 Connecting the power and communication cables
Step 9 Optional: Extending the power cable
Step 10 Checking the earthing
Step 11 Performing gas leakage test
Step 12 Evacuating the air
Step 13 Charging the refrigerant
Step 14 Fixing and insulating the connection part for refrigerant pipes
Step 15 Installing and connecting the drain hose
Step 16 Performing drainage test
Step 17 Checking the earthing
Step 18 Performing the final check and trial operation

Appendix 25

COMMISSION DELEGATED REGULATION (EU) No 626/2011i)
PRODUCT FICHE (ENERGY LABELLING OF AIR CONDITIONERS)

Troubleshooting

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

2

ii)

English

Safety Information

Carefully follow the precautions listed as below because
they are essential to guarantee the safety of SAMSUNG
product.

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

∙ 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 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 hydraulic
lines. Failure to comply with these instructions or
to comply with the 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 control (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 centers or returned to the retailer so that
it can be disposed of correctly and safely.

∙ This product has been determined to be in compliance

with the Low Voltage Directive (2006/95/EC), and the
Electromagnetic Compatibility Directive (2004/108/
EC) and the Machinery Directive (2006/42/EC) of the
European Union.

∙ This appliance is not intended for use by persons

(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, without 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.

Safety Information

3

Safety Information

English

Safety Information

Installing the unit

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

∙ 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 must be installed in compliance with

the spaces indicated in the manual to ensure
either accessibility from both sides or ability to
perform routine maintenance and repairs. The units’
components must be accessible and that can be
disassembled in conditions of complete safety either
for people or things. For this reason, where it is
not observed as indicated into the manual, the cost
necessary to reach and repair the unit (in safety, as
required by current regulations in force) with slings,
trucks, scaffolding or any other means of elevation
won’t be considered in-warranty and charged to end
user.

Power supply line, fuse or circuit
breaker

∙ 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.

∙ 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 grounding 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.

CAUTION

∙ Make sure that you earth the cables.

– Do not connect the earth wire to the gas pipe,

water pipe, lighting rod or telephone wire. If
earthing is not complete, electric shock or fire may
occur.

∙ Install the circuit breaker.

– If the circuit breaker is not installed, electric shock

or fire may occur.

∙ Make sure that the condensed water dripping from

the drain hose runs out properly and safely.

∙ Install the power cable and communication cable of

the indoor and outdoor unit at least 1m away from
the electric appliance.

∙ Install the indoor unit away from lighting apparatus

using the ballast.

– If you use the wireless remote control, reception

error may occur due to the ballast of the lighting
apparatus.

4

English

∙ Do not install the air conditioner in following places.

– Place where there is mineral oil or arsenic acid.

Resin parts flame and the accessories may drop or
water may leak. The capacity of the heat exchanger
may reduce or the air conditioner may be out of
order.

– The place where corrosive gas such as sulfurous

acid gas generates from the vent pipe or air outlet.
The copper pipe or connection pipe may corrode
and refrigerant may leak.

– The place where there is a machine that generates

electromagnetic waves. The air conditioner may not
operate normally due to control system.

– The place where there is a danger of existing

combustible gas, carbon fiber or flammable dust.
The place where thinner or gasoline is handled. Gas
may leak and it may cause fire.

∙ Be sure not to perform power cable modification,

midway wiring, and multiple wire connection.

– It may cause electric shock or fire due to poor

connection or insulation and current limit override.

– When midway wiring is required due to power line

damage, refer to "Step 9 Optional: Extending the
power cable" in the installation manual.

Safety Information

5

English

Installation Procedure

Strong wind

Rooftop

Outdoor UnitOutdoor Unit

Sea Sea

Sea breeze Sea breeze

Outdoor Unit

Protection wall

Sea

Sea breeze

Step 1 Choosing the installation
location

∙ Install the unit where the pipes and cables can be

easily connected to the indoor unit.

∙ Maintain sufficient space for repairs and service.

Determine the installation location considering the
following conditions and obtain the user approval.

Indoor unit

∙ Make sure that condensed water dripping from the

drain hose is directed away safely.

∙ If there is any unavoidable reason to install the unit

at such a place, take the following measures:

∙ Install the unit where the pipes and cables can be

easily connected to the outdoor unit.

∙ Install the unit where there are no obstacles against

the wind around the air intake and air outlet.

∙ Install the unit on a flat and stable surface that can

– When installing the unit at a roadside concentrated

with buildings, install it parallel to the road.

– Install the unit so that the air outlet faces the wall

such as rooftop that may be subjected to strong
wind.

hold the unit’s weight. Otherwise, the unit may
generate noise and vibrations.

∙ Do not install the unit near highly frequented doors

and passages.

∙ Do not install the unit in a location exposed to direct

sunlight.

Installation Procedure

Top view Side view

More than 50cm

∙ When installing the outdoor unit near the seashore,

Air outlet

<Corner installation>

More than 60cm

Air intake

More than 100cm

<Wall installation>

make sure that it is not directly exposed to sea
breeze. If you cannot find an adequate place, a
protection wall should be constructed.

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

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

Outdoor unit

∙ Install the unit where it will not experience oil

leakages, salt collection, gas exposure, or sulfide gas
risk, and keep it and safe from other dangers.

∙ Install the unit where does not disturb your neighbors

as they may be affected by the noise or airflow
coming from the unit.

∙ Install the unit where no rainwater can collect on or

near it.

∙ Install the unit in a well-ventilated location away

from direct sunlight or strong winds.

6

∙ If you cannot avoid a place near the seashore,

construct a protection wall around the outdoor unit.

English

∙ Construct a protection wall made of solid material

such as concrete to block sea breeze. Make sure that
its height and width are 1.5 times greater than the
size of the outdoor unit. In addition, secure a space
larger than 600 mm between the protection wall and
the outdoor unit for exhausted air to ventilate.

∙ Install the unit at a place where water can drain

smoothly.

∙ If you have any difficulty in finding an installation

location, contact your manufacturer.

∙ Be sure to clean sea water and dust on the heat

exchanger of the outdoor unit and apply a corrosion
inhibitor on it (at least once in a year).

Outdoor unit installation request

∙ The suggested space is based on the outdoor

temperature of 35°C while in operation. If the outdoor
temperature is higher than 35°C, secure more space.

∙ Be sure to secure sufficient clearance for a person

and air flow passage.

∙ See the clearances and dimensions in Minimum

clearances for the outdoor unit (page 7) when
installing the outdoor unit.

∙ If you install multiple outdoor units in the same place,

be sure to secure enough space for ventilation and
free airflow.

∙ If the space for ventilation is insufficient, the air

conditioner may not perform well as designed.

600 or more

300 or

more

When installing more than 1 outdoor unit

1500 or

more

300 or
more

600 or

more

600 or

more

3000 or

more

600 or

more

3000 or

more

300 or more

1500 or more

(Unit: mm)

300 or

more

300 or

more

600 or

more

1500 or
more

300 or more

Installation Procedure

Minimum clearances for the outdoor unit

When installing 1 outdoor unit

300 or more

300 or

more

300 or

more

600 or

more

2000 or

more

(Unit: mm)

1500 or
more

1500 or more

600 or

500 or

more

500 or

more

more

600 or

more

300 or

more

300 or

more

1500 or more

7

Installation Procedure

English

Anchor bolt hole

WARNING

∙ After installing the outdoor unit, apply rust inhibitor

on the internal pipes and heat exchanger.

– Airborne corrosive gas such as sulfur compounds,

hydrogen sulfide, and ammonia, or salty dust may
cause pipe corrosion. This corrosion may result in
refrigerant leakage.

– Inspect the outdoor unit at least once a year and

re-apply the rust inhibitor where it is damaged or
worn out.

∙ When applying rust inhibitor, be sure to follow the

instructions below:

– Turn off the power before spraying the rust

inhibitor.
– Wear protective goggles and a mask in advance.
– Clean the dusty surface with clean fabric or paper

before spraying the inhibitor.

Installation Procedure

– Make sure that wind is blowing from behind the

worker.
– Do not spray on the PCB panel and electric parts.

∙ A ventilation system is required when the outdoor

unit is installed in a closed space or room, even
though R-410A is not poisonous or flammable.

∙ Install the railing around the outdoor unit to prevent

falling when installed at a high place.

∙ Avoid installation near exhaust pipes and ventilating

openings exposed to corrosive gas, sulfur oxide,
ammonia, or sulfur gas herbicide. Installations near
these places require anticorrosive treatments. Contact
the manufacturer to avoid corrosion of copper pipes
or soldered parts.

∙ Depending on the power supply, electric noise or

unstable voltage may happen after malfunctions of
the electrical parts or the control system particularly
on ships or other places using generators.

Fixing the outdoor unit in place

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

(Unit: mm)

CAUTION

∙ Install the indoor unit away from any interference,

such as radios, computers, and stereo devices, and
also select the place where the electrical wiring work
is possible.

– Keep the unit at least 3 m away from electronic

devices that generate electromagnetic waves, and

install a protection tube for the main power cable

and communication cable.
– Make sure that there is no device that can generate

electromagnetic waves. Otherwise, a malfunction

of the control system may occur. For example, the

indoor unit remote control sensor may not properly

receive signals near fluorescent lamps because of

interference.

∙ Be sure to install the outdoor unit in a safe place

where it is not affected by snowfall. The frame should
be installed in a place where the air inlet and heat
exchanger of the unit are not buried under snow.

CAUTION

∙ Install a drain outlet at the lowest end around the

base for the outdoor unit drainage.

∙ When installing the outdoor unit on the roof,

waterproof the unit and check ceiling strength.

8

English

Step 2 Unpacking

Ø 60~65 mm

Outdoor

Indoor unit

Unpacking the indoor unit

M4 X L12 screws (4) M4 X L14 screws (4)

1 Open the indoor unit package.
2 Remove the top and middle cushions.
3 Remove the bottom cushion.

Unpacking the outdoor unit

1 Pull out the outdoor unit from the package.
2 Remove the top cushion.
3 Remove the 4 screws from the wooden pallet.
4 Remove the wooden pallet.

Step 3 Checking and preparing
accessories

The following accessories are supplied with the
air conditioner. Their type and quantity may differ
depending on the specifications.

Accessories in the indoor unit package

Fixing bracket for indoor

unit (1)

Remote control (1)

Pipe outlet protection

rubber (1)

Accessories in the outdoor unit package

Drain cap (3) Drain plug out (1)

Rubber leg (4)

Insulation for drain hose

(1)

Installation Procedure

MANUAL (2)

Batteries for remote

control (2)

Remote control holder

Insulation for piping(1)

(1)

Step 4 Drilling a hole through a wall

1 Determine the position of a 60 to 65 mm hole

considering possible directions of the pipe bundle and
minimum distances between the hole and installation
plate.

2 Drill the hole that slopes slightly downward (15°).

9

Installation Procedure

English

Insulation

Refrigerant pipes

Pipe insulator

Vinyl tape

Drain hose

Indoor/outdoor

unit

communication

cable

L

1

h

1

n=1

indoor

Outdoor

Step 5 Taping the pipes, cables, and
drain hose

Step 6 Connecting the refrigerant
pipes

1 Wrap the refrigerant pipes with the provided

insulation. This wrapping minimises condensation.

Items Maximum allowable length

Outdoor unit

models

AC100KXADEH AC140KXADGH

Main pipe (L1) 50 m 75 m

Max. height

difference

between outdoor

30 m 30 m

and indoor units

2 Wind the refrigerant pipes, power cable,

(h1)

communication cable, and drain hose with vinyl tape
to make a pipe bundle.

Installation Procedure

∙ Temper grade and minimum thickness of the

refrigerant pipe

NOTE

∙ Be sure to insulate the pipes without gaps or cracks,

and use adhesive between the connecting parts of the
insulation to prevent moisture from entering.

∙ When bending the pipe, try to secure a large bending

radius (over 100 mm) to prevent the copper pipe
from distorting.

∙ Use the polyethylene or EPDM foam insulation with a

thickness over 7 mm.

∙ If pipes are installed in a place with humidity

over 80% (such as in a building site pit, basement,
seashore, near hot springs, or lakes), use an insulation
of a thickness over 10 mm.

∙ Make sure that the thickness of the insulation does

not get thinner on the pipe's bending area.

∙ When the insulation thickness becomes thinner, use

extra insulation to maintain thickness.

∙ When installing the pipe hanger, use extra PE- foam

insulation (over 5 mm) to make the width of the
insulation 3 times wider than the hanger. Do not use
cable ties as a pipe hanger.

10

Outer diameter

[mm]

Minimum

thickness [mm]

Temper grade

ø6.35 0.7

ø9.52 0.7

ø12.70 0.8

C1220T-O

ø15.88 1.0

ø15.88 0.8

ø19.05 0.9

C1220T-1/2H OR

C1220T-H

ø22.23 0.9

English

1 Connect each assembly pipe to the appropriate valves

Liquid side

service valve

Gas side
service valve

Liquid

Gas

D

A

Pipe Flare

Make at least one round:
It will reduce noise and vibration

on the indoor and outdoor units and fasten the flare
nuts.

2 As depicted in the illustration below, tighten the flare

nut manually, and then apply the following torque
with a torque wrench.

Indoor unit

Outdoor unit

Outer Diameter

(D, mm)

Fastening torque

(N·m)

Depth (A, mm)

6.35 14 to 18 1.3

9.52 34 to 42 1.8

12.7 49 to 61 2

15.88 68 to 82 2.2

19.05 100 to 120 2.2

WARNING

∙ During installation, make sure that there is no gas

leakage. When collecting refrigerant, first stop the
compressor. If the refrigerant pipe is not properly
connected and compressor runs with the service
valve open, the pipe takes in air and the pressure
rises, which may cause explosion or injury.

Installation Procedure

CAUTION

∙ Be sure to use C1220T-1/2H (Semi-hard) pipe for

more than Ø19.05 mm. If you use C1220T-O (Soft)
pipe for Ø19.05 mm, the pipe may be broken, which
can result in an injury.

∙ The appearance of the unit may be different from the

diagram depending on the model.

11

Installation Procedure

English

90°

Oblique

Rough Burr

Pipe

Reamer

Flaring tool

Correct Inclined Damaged

Surface

Cracked Uneven

Thickness

Step 7 Optional: Cutting and flaring
the pipes

1 Make sure that you have the required tools; pipe

cutter, reamer, flaring tool, and pipe holder.

2 If you want to shorten the pipes, cut it with a pipe

cutter, making sure that the cut edge remains at a
90° angle to the side of the pipe. See the illustrations
below for the correct edge cut.

3 To prevent gas leakage, remove all burrs at the cut

edge of the pipe with a reamer.

Installation Procedure

Step 8 Connecting the power and
communication cables

Electrical work must be done by the certified personnel.

∙ Wiring work should be performed in compliance with

related regulations following technical specifications
and installation guide.

∙ Be sure to install an exclusive power supply. If you

use a power strip for multiple electrical connections,
there is a risk of electric shock or fire.

∙ Be sure to install a circuit breaker with a rated current

sensitivity of over 30 mA.

∙ Fasten the screws on the terminal block to be within

the rated range and so that they do not loosen.

∙ Be sure to connect the ground wire. Install the power

wire and make sure it is shorter than 50 m. If the
length of the power wire exceeds 50 m, the product
may not work properly or the wire may be damaged.

Outdoor-to-indoor power and communication
cables specifications

Indoor power supply

Power supply Max/Min (V) Indoor power cable

1Φ, 220-240V,

50 Hz

4 Slide a flare nut onto the pipe.
5 Modify the flare with a flaring tool.

NOTE

∙ For outdoor use, the power supply cords of

the appliances must not be lighter than the
polychloroprene sheathed flexible cord. (Code
designation IEC: 60245 IEC 57 / CENELEC: H05RN-F
or IEC: 60245 IEC66 / 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.

6 Check that the flaring has been properly made,

referring to the illustrations below.

±10% 2.5 mm² ↑, 3 wires

Communication cable

0.75 to 1.5 mm², 2 wires

12

English

CAUTION

R

B

2

d2

d1

D

B

L

F E

Silver solder

R

S T N

When connecting two cables to a ring terminal, separate the ring
terminal up or down to prevent it from getting loose. Place the thin
cable upward and the thick cable downward. Fix the power cables
with a cable tie.

Solderless ring
terminal

Cable tie

Thin cable

Thick cable

∙ Use rated cables or products only, with heat

resistance over 105°C, as well as properly rated
switches or fuses in the cabinet panel.

∙ Make sure that the cables connected do not produce

sparks around the auxiliary power switch or that
they are not installed in a place subject to high
temperature. High ambient temperature decreases
allowable current.

∙ Install the auxiliary power switch in a dry place,

install the panel board or electrical component box,
and then install the circuit breaker in the panel board.

∙ When connecting the main power cable, press the

cable to the terminal for a secure connection.

∙ Select a ring terminal for use.

Screw

Tightening torque for

terminal (kgf∙cm)

M3 5 to 7.5

M3.5 8 to 12

M4 12 to 18
M5 20 to 30
M6 25 to 37.5

Installation Procedure

Thickness of the

wire (mm2)

B (mm) d2 (mm)

2.5 Less than 9.5 More than 4.5
4 Less than 9.5 More than 4.5
6 Less than 9.5 More than 4.5

10 Less than 15 More than 8.4

Connecting the cable to the power terminal

Connect the cables to the terminal board with the ring
terminals.

NOTE

∙ Be sure to use the certified and rated cables and

firmly connect them without applying any external
force to the ring terminal.

∙ Connect with a driver and wrench that can apply the

rated torque to the screws.

∙ Connect the terminal screws in compliance with the

rated tightening torques.

∙ If the terminal is loose, a fire may occur, caused by

arcing electricity. If the terminal is connected too
firmly, the terminal may be damaged.

Connecting the cables

AC100KXADEH

∙ This product uses a single phase power, with 220 to 240V

supply.

∙ When connecting the outdoor-to-indoor power cables, be

sure to match the numbers (or letters) between the outdoor
and indoor units. Connect the communication cable to the
connector included in the electrical component box for each
unit. When the outdoor-to-indoor power cables are connected
incorrectly, a malfunction of the product may occur.

∙ When connecting the communication and outdoor-to-indoor

power cables, make sure these cables do not touch the
service valve on the refrigerant pipe on the gas side or the
pipes without proper insulation. Fix the outdoor-to-indoor
power cables to the insulated pipes.

∙ Be sure to comply with the wiring standards, as there may

be a risk of fire.

∙ Make sure to install the circuit breaker firmly inside the

electrical component box.

13

Installation Procedure

English

ELB

NFB Single

phase 220 to

240V, 50 Hz

Outdoor-to-indoor power cable

Main power cable

Outdoor unit Indoor unit

Electrical panel

Earthing

Ground wire

Communication cable

1(L)

2(N) L N

F1 F2

Outdoor-to-indoor

power cable

Communication

cable

cable tie

power supply cable (Single
phase AC 230V, should be
purchased on-site)

1(L)

2(N) L N

F1 F2

1(L) 2(N)

F1 F2

Outdoor unit

Indoor unit

ELB

NFB 3phase 4

wires, 380 to

415V, 50 Hz

Outdoor-to-indoor power cable

Main power cable

Outdoor unit Indoor unit

Electrical panel

Earthing

Ground wire

Communication cable

F1 F2

1(L)

2(N)

L1(R)

L2(S)

L3(T)

N

Outdoor-to-indoor

power cable

Communication

cable

cable tie

power supply cable (Single
phase AC 230V, should be
purchased on-site)

F1 F2

1(L) 2(N) F1 F2

1(L)

2(N)

L1(R)

L2(S)

L3(T)

N

Outdoor unit

Indoor unit

Entire system diagram

∙ When connecting the communication and outdoor-to-

indoor power cables, make sure these cables do not
touch the service valve on the refrigerant pipe on the
gas side or the pipes, without proper insulation. Fix the
outdoor-to-indoor power cables to the insulated pipes.

∙ Make sure to comply with the wiring standards, as

there may be a risk of fire.

∙ Make sure to install the circuit breaker firmly inside

the electrical component box.
∙ Install a 3-phase 4-wire circuit breaker.
∙ When using the power (R, S, T, N) with the NFB

Power wiring diagram

(overcurrent breaker), be sure to connect the main

power cable (R, S, T, N) to the R, S, T and N terminal on

the outdoor unit.

Entire system diagram

Installation Procedure

Indoor and outdoor unit connection diagram

AC140KXADGH

∙ This product uses a 3-phase 4-wire electrical system,

with 380 to 415V supply.

∙ When connecting the outdoor-to-indoor power cables,

be sure to match the numbers (or letters) between the
outdoor and indoor units. Connect the communication
cable to the connector included in the electrical
component box for each unit. When the outdoor­to-indoor power cables are connected incorrectly, a

malfunction of the product may occur.

14

Power wiring diagram

Indoor and outdoor unit connection diagram