LG UU30W INSTALLATION INSTRUCTIONS

www.lg.com

INSTALLATION MANUAL

AIR
CONDITIONER

P/NO : MFL67855411

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

For more information, Refer to the CD or LG Web site (www.lg.com).

Standard inverter
Original instruction

ENGLISH

ITALIANO

ESPAÑOL

FRANÇAIS DEUTSCH

ΕΛΛΗΝΙΚΆ

ČEŠTINA

NEDERLANDS

POLSKI

LIMBA ROMÂNĂ

Single A Air Conditioner Installation Manual

CONTENTS

Safety Precautions ..............................................................................................3

Installation of Outdoor Unit................................................................................7

Wiring Connection.............................................................................................11

Connecting Pipes ..............................................................................................14

Leakage test and Evacuation ...........................................................................18

Test running .......................................................................................................20

Function..............................................................................................................22

Self-diagnosis Function....................................................................................23

Installation Guide at the Seaside.....................................................................24

2

To prevent the injury of the user or other people and property damage, the following instructions
must be followed.

n Be sure to read before installing the air conditioner.
n Be sure to observe the cautions specified here as they include important items related to safety.
n Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is

classified by the following indications.

n The meanings of the symbols used in this manual are as shown below.

WARNING

CAUTION

This symbol indicates the possibility of death or serious injury.

This symbol indicates the possibility of injury or damage to properties only.

WARNING

n Installation

Be sure not to do.

Be sure to follow the instruction.

Safety Precautions

Installation Manual 3

Safety Precautions

ENGLISH

Always perform
grounding.

• Otherwise, it may cause
electrical shock.

Don’t use a power
cord, a plug or a loose
socket which is dam­aged.

• Otherwise, it may cause
a fire or electrical shock.

For installation of the
product, always con­tact the service center
or a professional instal­lation agency.

• Otherwise, it may cause
a fire, electrical shock,
explosion or injury.

Securely attach the
electrical part cover to
the indoor unit and the
service panel to the
outdoor unit.

• If the electrical part
cover of the indoor unit
and the service panel of
the outdoor unit are not
attached securely, it
could result in a fire or
electric shock due to
dust, water, etc.

Always install an air
leakage breaker and a
dedicated switching
board.

• No installation may
cause a fire and electri­cal shock.

Do not keep or use
flammable gases or
combustibles near the
air conditioner.

• Otherwise, it may cause
a fire or the failure of
product.

4

Safety Precautions

Do not share the out­let with other appli­ances.

• It will cause an electric
shock or a fire due to
heat generation.

Do not use the dam­aged power cord.

• Otherwise, it may
cause a fire or electri­cal shock.

Do not modify or
extend the power
cord randomly.

• Otherwise, it may
cause a fire or electri­cal shock.

Take care so that the
power cord may not
be pulled during oper­ation.

• Otherwise, it may
cause a fire or electri­cal shock.

Unplug the unit if
strange sounds,
smell, or smoke
comes from it.

• Otherwise, it may
cause electrical shock
or a fire.

Keep the flames away.

• Otherwise, it may
cause a fire.

n Operation

Use caution when unpacking and
installing.

• Sharp edges may cause injury.

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.

Ensure that an installa­tion frame of the out­door unit is not dam­aged due to use for a
long time.

• It may cause injury or an
accident.

Do not disassemble or
repair the product ran­domly.

• It will cause a fire or
electrical shock.

Do not install the prod­uct at a place that there
is concern of falling
down.

• Otherwise, it may result
in personal injury.

Installation Manual 5

Safety Precautions

ENGLISH

Take the power plug
out if necessary, hold­ing the head of the
plug and do not touch
it with wet hands.

• Otherwise, it may
cause a fire or electri­cal shock.

Do not use the power
cord near the heating
tools.

• Otherwise, it may
cause a fire and electri­cal shock.

Do not open the suc­tion inlet of the
indoor/outdoor unit
during operation.

• Otherwise, it may elec­trical shock and failure.

Do not allow water to
run into electrical
parts.

• Otherwise, it may
cause the failure of
machine or electrical
shock.

Hold the plug by the
head when taking it
out.

• It may cause electric
shock and damage.

Never touch the metal
parts of the unit when
removing the filter.

• They are sharp and
may cause injury.

Do not step on the
indoor/outdoor unit
and do not put any­thing on it.

• It may cause an injury
through dropping of the
unit or falling down.

Do not place a heavy
object on the power
cord.

• Otherwise, it may
cause a fire or electri­cal shock.

When the product is
submerged into water,
always contact the
service center.

• Otherwise, it may
cause a fire or electri­cal shock.

Take care so that children may not step on the outdoor unit.

• Otherwise, children may be seriously injured due to falling down.

6

Safety Precautions

CAUTION

n Installation

Install the drain hose to
ensure that drain can
be securely done.

• Otherwise, it may cause
water leakage.

Install the product so
that the noise or hot
wind from the outdoor
unit may not cause any
damage to the neigh­bors.

• Otherwise, it may cause
dispute with the neigh­bors.

Always inspect gas
leakage after the instal­lation and repair of
product.

• Otherwise, it may cause
the failure of product.

Keep level parallel in installing the
product.

• Otherwise, it may cause vibration or
water leakage.

Please install safely at a place that
can sufficiently endure the weight of
the product.

• If the strength is not sufficient, the
product may fall and cause injury.

n Operation

Avoid excessive cool­ing and perform venti­lation sometimes.

• Otherwise, it may do
harm to your health.

Use a soft cloth to
clean. Do not use wax,
thinner, or a strong
detergent.

• The appearance of the
air conditioner may dete­riorate, change color, or
develop surface flaws.

Do not use an appli­ance for special pur­poses such as preserv­ing animals vegetables,
precision machine, or
art articles.

• Otherwise, it may dam­age your properties.

Do not place obstacles around the flow inlet or outlet.

• Otherwise, it may cause the failure of appliance or an accident.

Installation of Outdoor Unit

Installation Manual 7

ENGLISH

1. Installation Places

• If an awning is built over the unit to prevent direct
sunlight or rain exposure, make sure that heat radia­tion from the condenser is not restricted.

• Ensure that the spaces indicated by arrows around
front, back and side of the unit.

• Do not place animals and plants in the path of the
warm air.

• Take the air conditioner weight into account and
select a place where noise and vibration are mini­mum.

• Select a place so that the warm air and noise from
the air conditioner do not disturb neighbors.

• Place that can sufficiently endure the weight and
vibration of the outdoor unit and where even installa­tion is possible

• Place that has no direct influence of snow or rain

• Place with no danger of snowfall or icicle drop

•

Place without weak floor or base such as decrepit
part of the building or with a lot of snow accumulation

You need to select adequate installation location considering the following conditions, and make
sure to acquire the consent of the user.

More than
300mm

Installation of Outdoor Unit

2. Piping length and the elevation

n Single Operation

If installed tube is shorter than 7.5 m, additional charging is not necessary.
Additional Refrigerant = (A -7.5) x Additional refrigerant (g)

Unit : mm

Model Capacity

Pipe Size
mm(inch)

Length A(m) Elevation B(m)

Additional
refrigerant

(g/m)

Gas Liquid Standard Max. Standard Max.
UU18W 5kW Ø12.7(1/2) Ø6.35(1/4) 7.5 40 5 30 20
UU24W 7kW Ø15.88(5/8) Ø9.52(3/8) 7.5 50 5 30 40
UU30W 8kW Ø15.88(5/8) Ø9.52(3/8) 7.5 50 5 30 40

UU36W/UU37W 10kW Ø15.88(5/8) Ø9.52(3/8) 7.5 50 5 30 40
UU42W/UU43W 12.5kW Ø15.88(5/8) Ø9.52(3/8) 7.5 75 5 30 40
UU48W/UU49W 14kW Ø15.88(5/8) Ø9.52(3/8) 7.5 75 5 30 40
UU60W/UU61W 15kW Ø15.88(5/8) Ø9.52(3/8) 7.5 75 5 30 40

Sunroof

More than
300mm

More than

More than

300mm

Fence or

obstacles

300mm

More than 600mm

More than 700mm

Indoor unit

A

B

Outdoor unit

Indoor unit

Outdoor unit

A

B

Installation of Outdoor Unit

• When installing the branch pipe, direction and angle of installation is not limited.

• Take care so that burrs and foreign material may not enter into the cutting surface when
connecting.

• Connect remaining those by cutting or direct insertion to the diameter of pipe.

n Synchro Operation

Install the branch pipe so that pipe length and difference between high and low will not exceed
below Spec.

[Unit : m]

Pipe Length & Height

Total(L1+L2+L3+L4+L5)

Main Pipe(L1)

Branch Pipe (L2+L3+L4+L5)

Each

Indoor-Outdoor (H1)

Indoor-Indoor (H2)

(L1+L2),(L1+L3),(L1+L4),(L1+L5)

A

Spec(MAX.)

80

45

40

15

30

1

70

10

8

n Refrigerant Additional Charging Method

For additional charging method, see below table.

Indoor Unit Refrigerant Additional charging (g)

Duo
Trio

Quartet

Refrigerant = (L1-b) x B + (L2 + L3) x C
Refrigerant = (L1-b) x B + (L2 + L3 + L4) x C
Refrigerant = (L1-b) x B + (L2 + L3 + L4 + L5) x C

C

(g/m)

Pipe Size
mm(inch)

Ø6.35(1/4)

Ø9.52(3/8)

35

40

b

(m)

Model

UU42W/UU43W
UU48W/UU49W
UU60W/UU61W

B

(g/m)

7.5 40

b : Rated performance for refrigerant line length.
C : Additional charging Refrigerant of Branch Liquid Pipe.
B : Additional charging Refrigerant of Main Liquid Pipe.

CAUTION:

• Capacity is based on standard length and maximum allowance length is on the
basis of reliability.

• Improper refrigerant charge may result in abnormal cycle.

L2

L3

L4

L5

H1

Remote

Controller

L1

Branch

A

A

H2

NOTICE

Installation of Outdoor Unit

Installation Manual 9

ENGLISH

4.

Outdoor Unit PCB Setting Procedure For Simultaneous Operation System

** When using synchro operation,

- Do not use wireless remote controller.

- Use only one wired remote controller in the indoor units.

- Use Simple central controller "PQCSZ250S0" only.

3. Synchro Combination table

1. SW01N (PIP SW2) Setting

Set the SW01N (PIP SW2) as below Table (Ⓐ)

2. Auto Addressing Method
Addressing work assigns address to each indoor unit. When firstly installing product or replacing
the indoor unit PCB. Auto Addressing work should be done for simultaneous operation.

h Work procedure

1) Set SW01N (PIP SW2) correctly.

2) Turn on main power.

3) Press the SW02N (SW01B) for about 3 seconds within 3 minutes After main power on.(Ⓑ)

SW01B

LED01H

DIP SW2

A

B

MAIN PCBMAIN PCB

UU42W/48W/60W UU43W/49W/61W

LED01G
LED02G

SW02N

SW01N

B

A

LED01M
LED02M

6

Possible combination of indoor units

Synchro

Duo Trio Quartet

IDU : INDOOR UNIT
ODU : OUTDOOR UNIT
BD : BRANACH

DISTRIBUTOR UNIT

REMO : WIRED

REMOTE
CONTROLLER

ODU

BD

IDU IDU

REMO

ODU

BD

IDU IDU IDU

REMO

BD

IDU IDU IDU IDU

ODU

REMO

MODEL

Cas­sette

Duct

Ceiling

Suspended

Cas­sette

Duct

Ceiling

Suspended

Cas­sette

Duct

Ceiling

Suspended

UU42W/UU43W

CT24 NP2*2 CB24 NH2*2 CV24 NJ2*2 CT18 NQ2*3 CB18 NH2*3 CV18 NJ2*3 CT12 NR2*4 - -

UU48W/UU49W

CT24 NP2*2 CB24 NH2*2 CV24 NJ2*2 CT18 NQ2*3 CB18 NH2*3 CV18 NJ2*3 CT12 NR2*4 - -

UU60W/UU61W

UT30 NP2*2 UB30 NG2*2 UV30 NJ2*2 CT18 NQ2*3 CB18 NH2*3 CV18 NJ2*3 CT12 NR2*4 - -

Applied
Acces-

siries

Bdunit PMUB11A PMUB111A PMUB1111A
Simple central

controller**

PQCSZ250S0

NOTICE