LG ARNU09GSJC4 INSTALLATION INSTRUCTIONS

INSTALLATION MANUAL

AIR
CONDITIONER

Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring
standards by authorized personnel only.
Please retain this installation manual for future reference after reading it
thoroughly.

[

Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared Service Center B.V.

Krijgsman 1, 1186 DM Amstelveen, The Netherlands

[

Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu, Changwon-si,

Gyeongsangnam-do, KOREA

WALL MOUNTED
Original instruction

MFL69485413

Rev.28_061319

www.lg.com

Copyright © 2017 - 2019 LG Electronics Inc. All Rights Reserved.

ENGLISH

ITALIANO ESPAÑOL

FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

РУССКИЙ ЯЗЫК

УКРАÏНСЬКА

ҚАЗАҚ ТІЛІ

БЕЛАРУСКАЯ МОВА

O‘ZBEK TILI

2

TIPS FOR SAVING ENERGY

ENGLISH

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.

• Block sunlight with blinds or curtains while you are operating the air conditioner.

• Keep doors or windows closed tightly while you are operating the air conditioner.

• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.

• Speed up the fan to cool or warm indoor air quickly, in a short period of time.

• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air
conditioner is used for many hours.

• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.

For your records

Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:

Model number :

Serial number :

You can find them on a label on the side of each unit.

Dealer’s name :

Date of purchase :

Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:

TIPS FOR SAVING ENERGY

IMPORTANT SAFETY INSTRUCTIONS

3

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

The following symbols are displayed on indoor and outdoor units.

READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.

Always comply with the following precautions to avoid dangerous
situations and ensure peak performance of your product

WARNING

It can result in serious injury or death when the directions are
ignored

CAUTION

It can result in minor injury or product damage when the
directions are ignored

WARNING

Installation

• Compliance with national gas regulations shall be observed.

• Do not use a defective or underrated circuit breaker. Use this
appliance on a dedicated circuit.

- There is risk of fire or electric shock.

• For electrical work, contact the dealer, seller, a qualified
electrician, or an Authorized Service Center.

- Do not disassemble or repair the product. There is risk of fire

or electric shock.

!

!

!

Read the precautions in this manual
carefully before operating the unit.

This appliance is filled with
flammable refrigerant (R32)

This symbol indicates that the
Operation Manual should be read
carefully.

This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.

4

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Always ground the product.

- There is risk of fire or electric shock.

• Install the panel and the cover of control box securely.

- There is risk of fire or electric shock.

• Always install a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric
shock.

• Use the correctly rated breaker or fuse.

- There is risk of fire or electric shock.

• Do not modify or extend the power cable.

- There is risk of fire or electric shock.

• Do not install, remove, or re-install the unit by yourself
(customer).

- There is risk of fire, electric shock, explosion, or injury.

• Be cautious when unpacking and installing the product.

- Sharp edges could cause injury. Be especially careful of the

case edges and the fins on the condenser and evaporator.

• For installation, always contact the dealer or an Authorized
Service Center.

- There is risk of fire, electric shock, explosion, or injury.

• Do not install the product on a defective installation stand.

- It may cause injury, accident, or damage to the product.

• Be sure the installation area does not deteriorate with age.

- If the base collapses, the air conditioner could fall with it,

causing property damage, product failure, and personal injury.

• Do not turn on the breaker or power under condition that front
panel, cabinet, top cover, control box cover are removed or
opened.

- Otherwise, it may cause fire, electric shock, explosion or

death.

IMPORTANT SAFETY INSTRUCTIONS

5

ENGLISH

• Use a vacuum pump or Inert (nitrogen) gas when doing leakage
test or air purge. Do not compress air or Oxygen and Do not
use Flammable gases. Otherwise, it may cause fire or
explosion.

- There is the risk of death, injury, fire or explosion.

• Have all electric work done by a licensed electrician according
to "Electric Facility Engineering Standard" and "Interior Wire
Regulations" and the instructions given in this manual and
always use a special circuit.

- If the power source capacity is inadequate or electric work is

performed improperly, electric shock or fire may result.

• Always intstall a dedicated circuit and breaker.

- Improper wiring or installation may cause fire or electric

shock.

• The appliance shall be stored in a well-ventilated area where
the room size corresponds to the room area as specified for
operation. (for R32)

• The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an
operating gas appliance or an operating electric heater.)

• Keep any required ventilation openings clear of obstruction.

• Mechanical connections shall be accessible for maintenance
purposes.

• To prevent the mixing of different types of refrigerants, be sure
to check the type of refrigerant used in the outdoor unit.

Operation

• Do not let the air conditioner run for a long time when the
humidity is very high and a door or a window is left open.

- Moisture may condense and wet or damage furniture.

6

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Take care to ensure that power cable could not be pulled out or
damaged during operation.

- There is risk of fire or electric shock.

• Do not place anything on the power cable.

- There is risk of fire or electric shock.

• Do not plug or unplug the power supply plug during operation.

- There is risk of fire or electric shock.

• Do not touch(operate) the product with wet hands.

- There is risk of fire or electrical shock.

• Do not place a heater or other appliances near the power cable.

- There is risk of fire and electric shock.

• Do not allow water to run into electric parts.

- There is risk of fire, failure of the product, or electric shock.

• Do not store or use flammable gas or combustibles near the
product.

- There is risk of fire or failure of product.

• Do not use the product in a tightly closed space for a long time.

- Oxygen deficiency could occur.

• When flammable gas leaks, turn off the gas and open a
window for ventilation before turn the product on.

- Do not use the telephone or turn switches on or off. There is

risk of explosion or fire.

• If strange sounds, smell or smoke comes from product. Turn
the breaker off or disconnect the power supply cable.

- There is risk of electric shock or fire.

• Stop operation and close the window in storm or hurricane.
If possible, remove the product from the window before the
hurricane arrives.

- There is risk of property damage, failure of product, or electric

shock.

IMPORTANT SAFETY INSTRUCTIONS

7

ENGLISH

• Do not open the inlet grill of the product during operation.
(Do not touch the electrostatic filter, if the unit is so equipped.)

- There is risk of physical injury, electric shock, or product

failure.

• When the product is soaked (flooded or submerged), contact
an Authorized Service Center.

- There is risk of fire or electric shock.

• Be cautious that water could not enter the product.

- There is risk of fire, electric shock, or product damage.

• Ventilate the product from time to time when operating it
together with a stove, etc.

- There is risk of fire or electric shock.

• Turn the main power off when cleaning or maintaining the
product.

- There is risk of electric shock.

• When the product is not be used for a long time, disconnect
the power supply plug or turn off the breaker.

- There is risk of product damage or failure, or unintended

operation.

• Take care to ensure that nobody could step on or fall onto the
outdoor unit.

- This could result in personal injury and product damage.

• When mechanical connectors are reused indoors, sealing parts
shall be renewed. (for R32)

• When flared joints are reused indoors, the flare part shall be re­fabricated. (for R32)

• Periodic ( more than once/year ) cleaning of the dust or salt
particles stuck on the heat exchanger by using water.

• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.

• Do not pierce or burn refrigerant cycle part.

8

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Be aware that refrigerants may not contain an odour.

CAUTION

Installation

• Always check for gas (refrigerant) leakage after installation or
repair of product.

- Low refrigerant levels may cause failure of product.

• Install the drain hose to ensure that water is drained away
properly.

- A bad connection may cause water leakage.

• Keep level even when installing the product.

- To avoid vibration or water leakage.

• Do not install the product where the noise or hot air from the
outdoor unit could damage the neighborhoods.

- It may cause a problem for your neighbors.

• Use two or more people to lift and transport the product.

- Avoid personal injury.

• Do not install the product where it will be exposed to sea wind
(salt spray) directly.

- It may cause corrosion on the product. Corrosion, particularly

on the condenser and evaporator fins, could cause product
malfunction or inefficient operation.

• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
industry-accredited assessment authority, which authorises
their competence to handle refrigerants safely in accordance
with an industry recognised assessment specification. (for R32)

• The appliance shall be stored so as to prevent mechanical
damage from occurring.

• Refrigerant tubing shall be protected or enclosed to avoid
damage.

!

IMPORTANT SAFETY INSTRUCTIONS

9

ENGLISH

• Flexible refrigerant connectors (such as connecting lines
between the indoor and outdoor unit) that may be displaced
during normal operations shall be protected against mechanical
damage.

• The installation of pipe-work shall be kept to a minimum.

• Pipe-work shall be protected from physical damage.

• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts.

• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.

Operation

• Do not expose the skin directly to cool air for long periods of
time. (Don't sit in the draft.)

- This could harm to your health.

• Do not use the product for special purposes, such as
preserving foods, works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.

- There is risk of damage or loss of property.

• Do not block the inlet or outlet of air flow.

- It may cause product failure.

• Use a soft cloth to clean. Do not use harsh detergents,
solvents, etc.

- There is risk of fire, electric shock, or damage to the plastic

parts of the product.

• Do not touch the metal parts of the product when removing
the air filter. They are very sharp!

- There is risk of personal injury.

10

IMPORTANT SAFETY INSTRUCTIONS

ENGLISH

• Do not step on or put anything on the product. (outdoor units)

- There is risk of personal injury and failure of product.

• Always insert the filter securely. Clean the filter every two
weeks or more often if necessary.

- A dirty filter reduces the efficiency of the air conditioner and

could cause product malfunction or damage.

• Do not insert hands or other objects through the air inlet or
outlet while the product is operated.

- There are sharp and moving parts that could cause personal

injury.

• Do not drink the water drained from the product.

- It is not sanitary and could cause serious health issues.

• Use a firm stool or ladder when cleaning or maintaining the
product.

- Be careful and avoid personal injury.

• Replace the all batteries in the remote control with new ones
of the same type. Do not mix old and new batteries or different
types of batteries.

- There is risk of fire or explosion.

• Do not recharge or disassemble the batteries. Do not dispose
of batteries in a fire.

- They may burn or explode.

• If the liquid from the batteries gets onto your skin or clothes,
wash it well with clean water. Do not use the remote if the
batteries have leaked.

- The chemicals in batteries could cause burns or other health

hazards.

• If you eat the liquid from the batteries, brush your teeth and
see doctor. Do not use the remote if the batteries have leaked.

- The chemicals in batteries could cause burns or other health

hazards.

IMPORTANT SAFETY INSTRUCTIONS

11

ENGLISH

• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of
flammable refrigerants. (for R32)

• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.

• If the supply cord is damaged, it must be replaced by the
manufacturer, its service agent or similarly qualified persons in
order to avoid a hazard.

12

TABLE OF CONTENTS

ENGLISH

2 TIPS FOR SAVING ENERGY
3 IMPORTANT SAFETY INSTRUCTIONS
13 INSTALLATION PARTS
13 INSTALLATION TOOLS
14 INSTALLATION MAP
15 INSTALLATION

15 Select the best Location
17 Drill a Hole in the Wall
17 Fixing Installation Plate
18 Flaring Work
19 Connecting the Piping
23 Checking the Drainage
25 Manual the decor, air filter Assembly & Disassembly
26 Wiring Connection
28 DIP Switch Setting
29 Group Control Setting
34 Model Designation
34 Airborne Noise Emission
34 Limiting concentration

TABLE OF CONTENTS

INSTALLATION PARTS

13

ENGLISH

INSTALLATION TOOLS

Cloth tape is not attached to the product.

INSTALLATION PARTS

Name

Installation plate

Quantity Shape

1 EA

SJ SK

Drain hose

Type "A" screw

Type "C" screw

Cloth tape

1 EA

5 EA

2 EA

1 EA

Figure FigureName

Screw driver

Name

Multi-meter

Electric drill

Measuring tape, Knife

Hole core drill

Spanner

Torque wrench

Hexagonal wrench

Ammeter

Gas-leak detector

Thermometer,

Level

Flaring tool set

14

INSTALLATION MAP

ENGLISH

INSTALLATION MAP

Remote Controller

(Accessory)

Vinyl tape (Wide)

• Apply after carrying out a
drainage test.

• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.

Saddle

Installation plate
Sleeve
Bushing-Sleeve

Putty(Gum Type Sealant)

Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.

NOTE

!

• You should purchase the installation parts.

* The feature can be changed according to type of model.

INSTALLATION

15

ENGLISH

Select the best Location

- There should not be any heat or steam near
the unit.

- Select a place where there are no obstacles
around of the unit.

- Make sure that condensation drainage can
be conveniently routed away.

- Do not install near a doorway.

- Ensure that the interval between a wall and
the left (or right) of the unit is more than 100
mm. The unit should be installed as high as
possible on the wall, allowing a minimum of
200 mm from ceiling.

- Use a metal detector to locate studs to
prevent unnecessary damage to the wall.

* The feature can be changed according to

type of model.

CAUTION

!

Install the indoor unit on the wall where
the height from the floor is more than
2 300 mm.

INSTALLATION

More than

100

More than 2 300

More than 200

More than

100

(Unit : mm)

16

INSTALLATION

ENGLISH

- The appliance shall be installed, operated and stored in a room with a floor area larger than the
minimum area.

- Use the graph of table to determine the minimum area.

- m : Total refrigerant amount in the system

- Total refrigerant amount : factory refrigerant charge + additional refrigerant amount

- Amin : minimum area for installation

Minimum floor area (for R32)

Floor location

m (kg) Amin (m

2

)

< 1.224

-

1.224 12.9

1.4 16.82

1.6 21.97

1.8 27.80
2 34.32

2.2 41.53

2.4 49.42

2.6 58.00

2.8 67.27
3 77.22

3.2 87.86

3.4 99.19

3.6 111.20

3.8 123.90
4 137.29

4.2 151.36

4.4 166.12

Floor location

m (kg) Amin (m

2

)

4.6 181.56

4.8 197.70
5 214.51

5.2 232.02

5.4 250.21

5.6 269.09

5.8 288.65
6 308.90

6.2 329.84

6.4 351.46

6.6 373.77

6.8 396.76
7 420.45

7.2 444.81

7.4 469.87

7.6 495.61

7.8 522.04

Wall mounted

m (kg) Amin (m

2

)

< 1.224

-

1.224 1.43

1.4 1.87

1.6 2.44

1.8 3.09
2 3.81

2.2 4.61

2.4 5.49

2.6 6.44

2.8 7.47
3 8.58

3.2 9.76

3.4 11.02

3.6 12.36

3.8 13.77
4 15.25

4.2 16.82

4.4 18.46

Wall mounted

m (kg) Amin (m

2

)

4.6 20.17

4.8 21.97
5 23.83

5.2 25.78

5.4 27.80

5.6 29.90

5.8 32.07
6 34.32

6.2 36.65

6.4 39.05

6.6 41.53

6.8 44.08
7 46.72

7.2 49.42

7.4 52.21

7.6 55.07

7.8 58.00

Ceiling Mounted

m (kg) Amin (m

2

)

< 1.224

-

1.224 0.956

1.4 1.25

1.6 1.63

1.8 2.07
2 2.55

2.2 3.09

2.4 3.68

2.6 4.31

2.8 5.00
3 5.74

3.2 6.54

3.4 7.38

3.6 8.27

3.8 9.22
4 10.21

4.2 11.26

4.4 12.36

Ceiling Mounted

m (kg) Amin (m

2

)

4.6 13.50

4.8 14.70
5 15.96

5.2 17.26

5.4 18.61

5.6 20.01

5.8 21.47
6 22.98

6.2 24.53

6.4 26.14

6.6 27.80

6.8 29.51
7 31.27

7.2 33.09

7.4 34.95

7.6 36.86

7.8 38.83

Amin (m2)

600

500

400

300

200

100

0

0 1.224 2 3 4 5 6 7 8

Floor standing

Wall mounted
Ceiling mounted

m (kg)

INSTALLATION

17

ENGLISH

Fixing Installation Plate

The wall you select should be strong and solid
enough to prevent vibration

1 Mount the installation plate on the wall

with type "A" screws. If mounting the unit
on a concrete wall, use anchor bolts.

- Mount the installation plate horizontally
by aligning the centerline using Horizontal
meter.

2 Measure the wall and mark the centerline.

It is also important to use caution
concerning the location of the installation
plate. Routing of the wiring to power
outlets is through the walls typically.
Drilling the hole through the wall for piping
connections must be done safely.

Tubatura posteriore sinistra

Ø 65

Ø 65

83

Measuring

Tape

Measuring Tape

Hanger

83

Right rear piping

Place a level on raised tab

Unit Outline

(Unit : mm)

494 504

134

150

Ø 65

152

98 134

194

Ø 65

Right rear piping

Left rear piping

Place a level on raised tab

Unit Outline

(Unit : mm)

418 418

Installation Plate

Drill a Hole in the Wall

- Drill the piping hole with a ø 65 mm hole
core drill. Drill the piping hole at either the
right or the left with the hole slightly slanted
to the outdoor side.

WALL

Indoor

Outdoor

5-7 mm

(3/16"~5/16")

18

INSTALLATION

ENGLISH

Flaring Work

Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.

1 Use the piping kit accessory or the pipes

purchased locally.

2 Measure the distance between the indoor

and the outdoor unit.

3 Cut the pipes a little longer than measured

distance.

4 Cut the cable 1.5 m longer than the pipe

length.

1 Completely remove all burrs from the cut

cross section of pipe/tube.

2 While removing burrs put the end of the

copper tube/pipe in a downward direction
while removing burrs location is also
changed in order to avoid dropping burrs
into the tubing.

- Remove flare nuts attached to indoor and
outdoor unit, then put them on pipe/tube
having completed burr removal.
(not possible to put them on after finishing
flare work)

1 Firmly hold copper pipe in a bar with the

dimension shown in below table table
below.

2 Carry out flaring work with the flaring tool.

Cut the pipes and the cable

Burrs removal

Putting nut on

Flaring work

Pipe

Reamer

Point down

Pipe diameter

inch (mm)

A inch (mm)

Wing nut type Clutch type

Ø 1/4 (Ø 6.35) 0.04~0.05 (1.1~1.3)

0~0.02
(0~0.5)

Ø 3/8 (Ø 9.52) 0.06~0.07 (1.5~1.7)
Ø 1/2 (Ø 12.7) 0.06~0.07 (1.6~1.8)

Ø 5/8 (Ø 15.88) 0.06~0.07 (1.6~1.8)

Ø 3/4 (Ø19.05) 0.07~0.08 (1.9~2.1)

CAUTION

!

(for R32)

• When mechanical connectors are
reused indoors, sealing parts shall be
renewed.

• When flared joints are reused indoors,
the flare part shall be re-fabricated.

Copper

pipe

90°

Slanted Uneven Rough

Flare nut

Copper tube

INSTALLATION

19

ENGLISH

1 Compare the flared work with the figure

by.

2 If a flared section is defective, cut it off

and do flaring work again.

Connecting the Piping

1 Pull the cover at the bottom of the indoor

unit. Pull the cover ① → ②.

2 Remove the cover from the indoor unit.

3 Pull back the tubing holder.
4 Remove pipe port cover and positioning

the tubing

* The feature can be changed according to

type of model.

1 Insert 3 hooks of the chassis cover into

gap of the chassis certainly.

2 Push the hooks to assemble chassis

cover. Push the chassis cover ① → ②.

Check

Assembly of chassis cover

Bar

Copper pipe

<Wing nut type>

"A"

<Clutch type>

Smooth all round

Even length

all round

Inside is shiny without scratches

= Improper flaring =

Surface

damaged

Cracked Uneven

Inclined

thickness

Indoor unit back side view

Right

Downwards

Tubing holder

Left

Backwards

ڹ

ڸ

ڸ

ڸ

ڹ

ڹ

ڸ

ڸ

ڸ

ڸ

ڹ

20

INSTALLATION

ENGLISH

- Press on the tubing cover and unfold the
tubing to downward slowly. And then bend
to the left side slowly.

* The feature can be changed according to

type of model.

- Following bending case from right to left
directly may cause damage to the tubing.

* The feature can be changed according to

type of model.

Good case

Bad case

CAUTION

!

Installation Information. For right piping.
Follow the instruction above.

INSTALLATION

21

ENGLISH

Installation of Indoor Unit

1 Hook the indoor unit onto the upper

portion of the installation plate. (engage
the three hooks at the top of the indoor
unit with the upper edge of the installation
plate) Ensure that the hooks are properly
seated on the installation plate by moving
it left and right

2 Unlock the tubing holder from the chassis

and mount between the chassis and
installation plate in order to separate the
bottom side of the indoor unit from the
wall.

* The feature can be changed according to

type of model.

Piping

1 Insert the connecting cable through the

bottom side of indoor unit and connect the
cable (You can see detail contents in
'Connecting the cables' section)

<Left side piping>

<Right side piping>

2 Secure the cable onto the control board

with the cable retainer.

3 Tape the tubing pipe, drain hose and the

connection cable. Be sure that the drain
hose is located at the lowest side of the
bundle. Locating at the upper side can
cause overflow from the drain pan through
the inside of the unit.

<Left side piping>

<Right side piping>

* The feature can be changed according to

type of model.

Installation plate

Tubing Holder

View

Terminal block of indoor unit

1(L) 2(N) 3(A) 4(B)

Indoor power input

Slide up the metal
plate cover

Outdoor unit

View

Terminal block of indoor unit

1(L) 2(N) 3(A) 4(B)

Indoor power input

Slide up the metal
plate cover

Outdoor unit

Tape

Connecting
cable

Drain hose

Drain hose

Connecting pipe

Tape

Connecting
cable

Drain hose

Connecting pipe

22

INSTALLATION

ENGLISH

1 Align the center of the pipes and

sufficiently tighten the flare nut by hand

2 Tighten the flare nut with a wrench

3 When needed to extend the drain hose of

indoor unit, assembly the drain pipe as
shown on the drawing

Wrap the insulation material
around the connecting portion.

1 Overlap the connection pipe insulation

material and the indoor unit pipe insulation
material. Bind them together with vinyl
tape so that there may be no gap.

2 Set the tubing cutting line upward.

Wrap the area which accommodates the
rear piping housing section with vinyl tape.

3 For left rear piping, bundle the piping and

drain hose together by wrapping them
cloth tape over the range within which
they fit into the rear piping housing
section.

* Wrap the piping of the indoor unit that are

visible from the outside with vinyl tape.

CAUTION

!

If the drain hose is routed inside the room
insulate the hose with an insulation material*
so that dripping from sweating condensation)
will not damage furniture or floors.

* Foamed polyethylene or equivalent is

recommended.

Outside diameter

Torque

Connecting the installation pipe
and drain hose to the indoor unit.

mm inch kgf.m
Ø 6.35 1/4 1.8~2.5
Ø 9.52 3/8 3.4~4.2
Ø 12.7 1/2 5.5~6.5

Ø 15.88 5/8 6.3~8.2
Ø 19.05 3/4 9.9~12.1

Gas Pipe

Liquid Pipe

Cutting Line

Cutting Line

Good Case Bad Case

* Tubing cutting line have to be upward.

Vinyl tape(narrow)

Connection pipe

Connecting cable

Vinyl tape (wide)

Wrap with vinyl tape

Indoor unit pipe

Pipe

Indoor unit tubing Flare nut Pipes

Insulation material

Torque wrench

Indoor unit tubing

Drain pipe

Adhesive

Open-end wrench
(fixed)

Flare nut

Connection pipe

Indoor unit drain hose

Vinyl tape(narrow)

Wrap with cloth tape

Pipe

Cloth tape

Drain hose

INSTALLATION

23

ENGLISH

Finishing the indoor unit
installation

1 Mount the tubing holder in the original

position.

2 Ensure that the hooks are properly seated

on the installation plate by moving it left
and right.

3 Press the lower left and right sides of the

unit against the installation plate until the
hooks engage into their slots (clicking
sound).

4 Finish the assembly by screwing the unit

to the installation plate by using two
pieces of type "C" screws. And assemble a
chassis cover.

Checking the Drainage

To check the drainage

1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain

hose of the indoor unit without any
leakage and goes out the drain exit.

Drain piping

1 The drain hose should point downward for

easy drain flow.

Downward slope

Connecting area

drain hose

Leakage

checking

Drain pan

Drain

hose
Leakage
checking

Type 'C' screw

24

INSTALLATION

ENGLISH

2 Do not make drain piping like the

following.

* The feature can be changed according to

type of model.

Do not raise

Water
leakage

Accumulated
drain water

Air

Waving

Water
leakage

Tip of drain hose
dipped in water

Water
leakage

Ditch

Less than
50 mm gap

INSTALLATION

25

ENGLISH

Manual the decor, air filter Assembly & Disassembly

26

INSTALLATION

ENGLISH

Wiring Connection

- Connect the wires to the terminals on the control board individually according to the outdoor
unit connection.

- Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of
indoor unit respectively.

※Resistance measurement position for incorrect wiring.

CAUTION

!

The Power cord connected to the unit should be selected according to the following
specifications.

CAUTION

!

The connecting cable connected to the indoor and outdoor unit
should be complied with the following specifications (This
equipment shall be provided with a cable set complying with the
national regulation).

If the supply cable is damaged, it must be replaced by a special
cable or assembly available from the manufacturer of its service
agent.

WARNING

!

Make sure that the screws of the terminal are free from looseness.

SJ/SK

Terminal block of indoor unit

1(L) 2(N) 3(A) 4(B)

Indoor power input

Outdoor unit

SODU SODU

Terminal block of outdoor unit

Indoor unit

IDU IDU

Central controller

INTERNET

DRY1

10±3 mm

NORMAL
CROSS-SECTIONAL
AREA 0.75 mm

DRY2

GN/YL

GND

35±5 mm

2

12 V

20 mm

INSTALLATION

27

ENGLISH

CAUTION

!

After the confirmation of the above conditions, prepare the wiring as follows:

1) Never fail to have separate power specially for the air conditioner. As for the method of
wiring, follow the circuit diagram pasted on the inside of control box cover.

2) Provide a circuit breaker switch between power source and the unit.

3) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose
from vibrations to which the unit is subjected during the course of transportation. Check
them and make sure that they are all tightly fastened. (If they are loose, it could give rise to
burn-out of the wires.)

4) Confirm the Specification of power source

5) Confirm that electrical capacity is sufficient.

6) Be sure that the starting voltage is maintained at more than 90 percent of the rated voltage
marked on the name plate.

7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)

8) Do not install the leakage breaker in a place which is wet or moist.
Water or moist may cause short circuit.

9) The following troubles would be caused by voltage drop-down.

- Vibration of a magnetic switch, damage on the contact point there of, fuse breaking,

disturbance to the normal function of a overload protection device.

- Proper starting power is not given to the compressor.

10) Before applying power to the indoor unit, be sure to check for incorrect wiring of the power

and communication lines.

CAUTION

!

Be sure to test the power line and communication line for incorrect wiring before power is
applied.

1) If the power line and communication line are swapped over, the product will be damaged.

2) Incorrect wiring confirmation test method
: Measure the resistance across the power terminals (L,N) using a multi meter.

- Resistance value of a normal connection: 1 MΩ or more

- Incorrect wiring resistance value: 500 MΩ or less

DIP Switch Setting

Indoor Unit

Outdoor Unit

In case that the products meet specific conditions, “Auto addressing” function can start
automatically with the improved speed by turning the DIP switch #3 of the outdoor unit and
resetting the power.

* Specific conditions:

- All names of the indoor units are ARNU****4

- The serial number of Multi V super IV (outdoor units) is after October 2013,

28

ENGLISH

INSTALLATION

CAUTION

!

For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.

Function Description Setting Off Setting On Default

SW1 Communication N/A (Default) - - Off

SW2 Cycle N/A (Default) - - Off

SW3 Group Control

Selection of Master
or Slave

Master Slave Off

SW4

Dry Contact
Mode

Selection of Dry
Contact Mode

Wired/Wireless remote

controller

Selection of Manual or

Auto operation Mode

Auto

Off

SW5 Installation

Fan continuous
operation

Continuous operation

Removall

- Off

SW6 Heater linkage N/A - - Off

SW7

Ventilator
linkage

Selection of
Ventilator linkage

Linkage Removal

Working

Off

Vane selection
(Console)

Selection of up/down
side Vane

Up side + Down side

Vane

Up side Vane

Only

Region selection

Selection tropical
region

General model Tropical model

SW8 Etc. Spare - - Off

Outdoor Unit PCB Outdoor Unit DIP Switch

DIP switch 7 segment

29

ENGLISH

INSTALLATION

Group Control Setting

Group Control 1

n Wired remote controller 1 + Standard Indoor Units

Some products have no DIP switch on PCB. It is possible to set indoor units to Master or Slave
by using the wireless remote controller instead of DIP switch.

For the details of the setting, please refer to the manual of the wireless remote controller.

1. It is possible to 16 indoor units(Max.) by one wired remote controller.
Set only one indoor unit to Master, set the others to Slave.

2. It is possible to connect with every type of indoor units.

3. It is possible to use wireless remote controller at the same time.

4. It is possible to connect with Dry Contact and Central controller at the same time.

- The Master indoor unit is possible to recognize Dry Contact and Central Controller only.

5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.
It is possible to control the other indoor units except the error units.

n DIP Switch in PCB

GND
Signal
12 V

Master Slave Slave Slave

Display Error Message

Only connect serial signal and

GND lines between indoor units.

or

LGAP Network System

Master

°C / °F (5 s)°C / °F (5 s)

TIME (3 s)TIME (3 s)

① Master Setting

- No. 3 Off

② Slave Setting

- No. 3 On

Indoor Unit DIP Switch

30

ENGLISH

INSTALLATION

GND
Signal
12 V

Slave

Slave

Master

or

Donʼt connect serial 12 V line

LGAP Network System

Master

MasterMaster

Display Error Message

°C / °F (5 s)°C / °F (5 s)

TIME (3 s)TIME (3 s)

Group Control 2

n Wired remote controllers + Standard Indoor Units

* It is possible to connect indoor units since Feb. 2009.
* It can be the cause of malfuctions when there is no setting of master and slave.
* In case of Group Control, it is possible to use following functions.

- Selection of operation, stop or mode

- Temperature setting and room temperature check

- Current time change

- Control of flow rate (High/Middle/Low)

- Reservation settings

- It is not possible at some functions.

* It is possible to control 16 indoor units(Max.) with the master wired remote control.

* Other than those, it is same with the Group Control 1.

31

ENGLISH

INSTALLATION

°C / °F (5 s)

TIME (3 s)

Group Control 3

n Mixture connection with indoor units and Fresh Air Intake Unit

* In case of connecting with standard indoor unit and Fresh Air Intake Unit, separate Fresh Air

Intake Unit with standard units. (N, M ≤ 16) (Because setting temperature are different.)

* Other than those, it is same with Group Control 1.

or

FAU

Master

Display Error Message

°C / °F (5 s)

TIME (3 s)

Master

FAU

Slave

Master

N

Master

LGAP Network System

Slave

Display Error Message

M

FAU

FAU FAU

Standard Standard

Standard

FAU

Standard

GND
Signal
12 V

* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit

32

ENGLISH

2 Remote Control

n Wired remote controller 2 + Indoor unit 1

INSTALLATION

°C / °F (5 s)

TIME (3 s)

1. It is possible to connect two wired remote controllers (Max.) with one indoor unit.
Set only one indoor unit to Master, set the others to Slave.
Set only one wired remote controller to Master, set the others to Slave.

2. Every types of indoor unit is possible to connect two remote controller.

3. It is possible to use wireless remote controller at the same time.

4. It is possible to connect with Dry Contact and Central controller at the same time.

5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.

6. There isn't limits of indoor unit function.

or

Master

°C / °F (5 s)

TIME (3 s)

Display Error Message

Master

Slave

Slave

Slave

LGAP Network System

Slave

GND
Signal
12 V

33

ENGLISH

INSTALLATION

Accessories for group control setting

It is possible to set group control by using below accessories.

Indoor unit 2 EA +Wired remote controller Indoor unit 1 EA +Wired remote controller 2 EA

* PZCWRCG3 cable used for connection * PZCWRC2 cable used for connection

CAUTION

!

Apply totally enclosed noncombustible conduit in case of local building code Requiring plenum
cable usage.

PZCWRCG3

Master

Slave

PZCWRC2

Master Slave

Master

The A-weighted sound pressure emitted by this product is below 70 dB.
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe working levels. Whilst there is

a correlation between the emission and exposure levels, this cannot be used reliably to
determine whether or not further precautions are required. Factor that influence the actual level
of exposure of the workforce include the characteristics of the work room and the other sources
of noise, i.e. the number of equipment and other adjacent processes and the length of time for
which an operator exposed to the noise. Also, the permissible exposure level can vary from
country to country. This information, however, will enable the user of the equipment to make a
better evaluation of the hazard and risk.

Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration
shall be described in the unit of kg/m3(Freon gas weight per unit air volume) for facilitating
calculation

n Calculate refrigerant concentration

Refrigerant concentration =

Total amount of replenished refrigerant in refrigerant facility (kg)

Capacity of smallest room where indoor unit is installed (m

3

)

Limiting concentration: 0.44 kg/m3(R410A)

Limiting concentration

34

INSTALLATION

ENGLISH

Airborne Noise Emission

Model Designation

ARN U G15 ASJ 4

Serial Number
Combinations of functions

A:Basic function L: Neo Plasma(Wall Mounted)
N/C : Ionizer

Chassis Name
Electrical Ratings

1 : 1Ø, 115 V, 60 Hz
6 : 1Ø, 220 - 240 V, 50 Hz
3 : 1Ø, 208/230 V, 60 Hz

Total Cooling Capacity in Btu/h
EX) 5 000 Btu/h ➝ '05' 18 000 Btu/h ➝ '18'

Combination of Inverter Type and Cooling Only or Heat Pump
N: AC Inverter and H/P V: AC Inverter and C/O
U: DC Inverter and H/P and C/O

System with Indoor Unit using R32/R410A

❈ LGETA:U Ex) URN

2 : 1Ø, 220 V, 60 Hz
7 : 1Ø, 100 V, 50/60 Hz

1Ø, 220 - 240 V, 50 Hz/1Ø, 220 V, 60 Hz

G :