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INSTALLATION MANUAL
AIR
CONDITIONER
www.lg.com
Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.
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.
Ceiling Suspended Air Conditioner
Original instruction (R32)
[Representative]
LG Electronics Inc. EU Representative :
LG Electronics European Shared Service Center B.V.
Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Tianjin Appliances Co.,Ltd.
No.09,Jinwei Road,Beichen District,Tianjin,China
ENGLISH
ITALIANO ESPAÑOL
FRANÇAIS DEUTSCH
ΕΛΛΗΝΙΚΆ
ČEŠTINA
NEDERLANDS
POLSKI
LIMBA ROMÂNĂ
2
MODEL DESIGNATION
ENGLISH
MODEL DESIGNATION
- Product Name : Air conditioner
- Model Name :
- Additional Information : serial number is
refer to the barcode on the product.
- Max allowable pressure High side :
4.2 MPa / Low side : 2.4 MPa
- Refrigerant : R32
Product information
Serial number
Indoor Unit / Outdoor Units
Detailed product type only
for M- series models
AQ : Wall mounted Libero-R
SQ : Wall mounted Libero-E
AH* : ARTCOOL
AW* : ART COOL Mirror
AH : Ceiling Cassette
AHL : Ceiling Concealed Duct
(Low Static)
Detailed product type for
U- / C- series models
L : Low Static
H : High COP
C : Econo
R : Refrigerant R32
Nominal Capacity
Ex) 7,000 Btu/h Class '07',
18,000 Btu/h Class '18'
Product type
Connectable Outdoor unit type
Chassis name
SQSM N B 015
S : Wall mounted /
ARTCOOL mirror
J : Wall mounted
A : ARTCOOL
T : Ceiling Cassette
B, M : Ceiling Concealed Duct
V : Ceiling Suspended & floor
Q : Console
P : Floor Standing
M : Indoor units only for
Multi systems
U : Indoor units only for
Single A systems
C : Common Indoor Unit for
Multi and Single CAC
N : Indoor Unit
U : Outdoor Unit
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 fur-
ther precautions are required.
Factor that influence the actual level of expo-
sure of the workforce include the characteris-
tics 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 evalu-
ation of the hazard and risk.
Airborne Noise Emission
TIPS FOR SAVING ENERGY
3
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 condition-
er 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
4
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
IMPORTANT SAFETY INSTRUCTIONS
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 or repairs made by unqualified persons can result in
hazards to you and others.
• Installation MUST conform with local building codes or, in the
absence of local codes, with the Nation Electrical Code NFPA
70/ANSI C1-1003 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
• The information contained in the manual is intended for use by
a qualified service technician familiar with safety procedures
and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this
manual can result in equipment malfunction, property damage,
personal injury and/or death.
• Compliance with national gas regulations shall be observed.
!
!
!
Read the precautions in this manual
carefully before operating the unit.
This appliance is filled with flamma-
ble refrigerant (R32)
This symbol indicates that the Opera-
tion Manual should be read carefully.
This symbol indicates that a service
personnel should be handling this
equipment with reference to the
Installation Manual.
IMPORTANT SAFETY INSTRUCTIONS
5
ENGLISH
Installation
• 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.
• 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.
• Use caution when unpacking and installing. - Sharp edges may
cause injury.
• 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.)
• Two or more people must lift and transport the product. Avoid
personal injury.
• 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.
• Be aware that refrigerants may not contain an odour.
6
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
• Keep any required ventilation openings clear of obstruction.
• The appliance shall be stored in a well-ventilated area where
the room size corresponds to the room area as specified for
operation.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• 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.
• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts.
• Mechanical connections shall be accessible for maintenance
purposes.
Operation
• 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.
• 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.
IMPORTANT SAFETY INSTRUCTIONS
7
ENGLISH
• 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.
• 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.
• 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.
• Turn off all devices that cause fire when the refrigerant leaks.,
ventilate the room (example : opening window or using
ventilation unit), and contact with dealer who you purchased
the unit.
• The installation of pipe-work shall be kept to a minimum.
• When mechanical connectors are reused indoors, sealing parts
shall be renewed.
• When flared joints are reused indoors, the flare part shall be re-
fabricated.
8
IMPORTANT SAFETY INSTRUCTIONS
ENGLISH
CAUTION
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.
• 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.
• Wear adequate personal protection equipment (PPE) when
installing, maintaining or servicing the product.
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.
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
!
IMPORTANT SAFETY INSTRUCTIONS
9
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.
• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.
• Periodic (more than once/year) cleaning of the dust or salt
particles stuck on the heat exchanger by using water.
• This equipment shall be provided with a supply conductor
complying with the national regulation.
• 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.
• 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.
10
TABLE OF CONTENTS
ENGLISH
2 MODEL DESIGNATION
3 TIPS FOR SAVING ENERGY
4 IMPORTANT SAFETY INSTRUCTIONS
11 PRODUCT PARTS
11 INSTALLATION TOOLS
12 INSTALLATION
12 Select the best Location
14 THE INDOOR UNIT INSTALLATION
15 Open side-cover
16 Mounting the anchor nut and bolt
18 Indoor unit drain piping
18 Drain piping
18 Drain test
19 Heat insulation
19 Flaring Work
22 Wiring Connection
23 TEST RUNNING
25 INSTALLATION INSTRUCTIONS
25 Installer Setting - How to enter installer setting mode
26 Installer Setting - Installer Setting Code Table
27 Installer Setting - Setting Address of Central Control
27 Installer Setting - Checking Address of Central Control
TABLE OF CONTENTS
PRODUCT PARTS
11
ENGLISH
PRODUCT PARTS
INSTALLATION TOOLS
Air outlet vent
Air inlet vent
(inlet grille)
Air filters
(behind inlet grille)
Louver
Right side cover
Left side cover
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
Name
12
INSTALLATION
ENGLISH
INSTALLATION
Indoor unit
Ceiling suspended type
- There should not be any heat source or steam near the unit.
- There should not be any obstacles to prevent the air circulation.
- A place where air circulation in the room will be good.
- A place where drainage can be easily obtained.
- A place where noise prevention is taken into consideration.
- Do not install the unit near the door way.
- Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
- The indoor unit must keep the maintenance space.
700(27 – 9/16) or more 700(27 – 9/16) or more
2500 (98 – 3/7)
or more
Floor
10 (13/32)
or more
300 (11 – 13/16)
or more
Unit: mm(inch)
INSTALLATION
13
ENGLISH
- The appliance shall be installed, operated and stored in a room with a floor area larger than the mini-
mum 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
0
100
200
300
400
500
600
Amin (m
2
)
m (kg)
0 1.224 2 3 4 5 6 7 8
Floor standing
Wall mounted
Ceiling mounted
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
)
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
)
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
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
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
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
14
THE INDOOR UNIT INSTALLATION
ENGLISH
THE INDOOR UNIT INSTALLATION
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
• Install the unit horizontally using a level
gauge.
• During the installation, care should be
taken not to damage electric wires.
• Select and mark the position for fixing
bolts and piping hole.
• Decide the position for fixing bolts
slightly tilted to the drain direction after
considering the direction of drain hose.
Drill the hole for anchor bolt on the ceil-
ing.
CAUTION
!
NOTE
!
• Avoid the following installation location.
1. Such places as restaurants and kitchen
where considerable amount of oil
steam and flour is generated.
These may cause heat exchange effi-
ciency reduction, or water drops, drain
pump mal-function.
In these cases, take the following
actions;
• Make sure that ventilation fan is enough
to cover all noxious gases from this
place.
• Ensure enough distance from the cook-
ing room to install the air conditioner in
such a place where it may not suck oily
steam.
2. Avoid installng air conditioner in such
places where cooking oil or iron pow-
der is generated.
3. Avoid places where inflammable gas is
generated.
4. Avoid place where noxious gas is gen-
erated.
5. Avoid places near high frequency gen-
erators.
THE INDOOR UNIT INSTALLATION
15
ENGLISH
Open side-cover
Step 1
Backside
Right side cover
Backside
Left side
cover
Step 2
- Remove two screws from side-cover.
Step 3
Step 4
- Remove paper bracket from side-cover.
- Unlock side-cover from side-panel slightly
(Tap the side-cover with your palm on the
backside)
- Knock out the pipe hole from the left side-
cover with nipper/plier.
Hold the side-cover with other hand while
tapping to prevent it to fall down.
CAUTION
!
16
THE INDOOR UNIT INSTALLATION
ENGLISH
Mounting the anchor nut and
bolt
- Prepare 4 suspension bolts. (Each bolts
length should be same.)
- Measure and mark the position for the Sus-
pension bolts and the piping hole.
- Drill the hole for anchor nut on the ceiling.
- Insert the nuts and washer onto the suspen-
sion bolts for locking the suspension bolts on
the ceiling.
- Mount the suspension bolts to the anchor-
nuts firmly.
- Secure the hangers onto the Suspension
bolts (adjust level roughly.) using nuts, wash-
ers and spring washers.
- Adjust a level with a level gauge on the
direction of left-right, back-forth by adjusting
suspension bolts.
- Adjust a level on the direction of top-bottom
by adjusting supension bolts. Then the unit
will be declined to the bottomside so as to
drain well.
- The following parts is option.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
(Unit : mm)
Suspension bolt
B
A
Nut
Ceiling
Anchor nut
Washer
Washer
Washer
Suspension
Suspension
bolts
bolts
Suspension
bolts
Spring
washer
Max.
12mm
Nut
Suspension
bolts
Hangen
Washer
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Flat washer
for M10
(accessory)
Flat washer
for M10
(accessory)
Nut
(W3/8 or M10)
Wall
Indoor
Outdoor
Slope gradient for
drain Should be
1/50 ~ 1/100
Model (kBtu/h) A B
18k/24k 1018
355
36k/42k/48k/60k 1418
Tighten the nut and bolt to prevent unit
from falling
• Drill the piping hole on the wall slightly
tilted to the outdoor side by using a
Ø 70 hole-core drill.
CAUTION
!
THE INDOOR UNIT INSTALLATION
17
ENGLISH
Installation information for declination
- Install declination of the indoor unit is very important for the drain of the convertible type air
conditioner.
- Minimum thickness of the insulation for the connecting pipe shall be 10 mm.
- If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be
declined to the bottomside.
CAUTION
!
Front of view
- The unit must be horizontal or inclined at angle.
- The inclination should be less than or equal to 1° or in between 10 to 20 mm inclined in drain
direction as shown in fig.
Ceiling
10~20 mm
Side of view
- The unit must be inclined to the bottomside of the unit when finished installation.
Ceiling
5~10 mm
18
THE INDOOR UNIT INSTALLATION
ENGLISH
Indoor unit drain piping
- Drain piping must have down-slope (1/50 to
1/100): be sure not to provide up-and-down
slope to prevent reversal flow.
- During drain piping connection, be careful
not to exert extra force on the drain port on
the indoor unit.
- Remove the rubber stopple before connect-
ing drain hose.
- Hook on the bracket after connecting the
drain hose as below.
Drain piping
- The drain hose should point downward for
easy drain flow.
- Do not make drain piping like the following.
- Be sure to execute heat insulation on the
drain piping.
Drain test
Use the following procedure to test the drain
pump operation:
- Set the air direction louvers up-and-down to
the position(horizontally) by hand.
- Pour a glass of water on the evaporator
using a kettle.
- Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
Drain hose
Bracket
Downward
slope
Do not raise
Accumulated
drain water
Air
Waving
Water
leakage
Water
leakage
Ditch
Less than
50 mm gap
Water
leakage
Tip of drain
hose dipped
in water
Heat insulation material: Polyethylene foam
with thickness more than 8 mm.
THE INDOOR UNIT INSTALLATION
19
ENGLISH
Heat insulation
Use the heat insulation material for the refrig-
erant piping which has an excellent heat-resis-
tance (over 120 °C).
Precautions in high humidity circumstance:
This air conditioner has been tested according
to the "KS Standard Conditions with Mist" and
confirmed that there is not any default.
However, if it is operated for a long time in
high humid atmosphere (dew point tempera-
ture: more than 23 °C), water drops are liable
to fall. In this case, add heat insulation materi-
al according to the following procedure:
- Heat insulation material to be prepared...
Adiabatic glass wool with thickness 10 to 20
mm.
- Stick glass wool on all air conditioners that
are located in ceiling atmosphere.
Connecting cables to the indoor unit
- Remove the control box cover for electrical
connection between the indoor and out door
unit
- Use the cord clamper to fix the cord.
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 1.5m 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.
Indoor unit
Thermal insulator
Fastening band
Refrigerant piping
Cut the pipes and the cable
Copper
pipe
90°
Slanted Uneven Rough
Burrs removal
Control box cover
20
THE INDOOR UNIT INSTALLATION
ENGLISH
- 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.
1
Compare the flared work with the figure by.
2 If a flared section is defective, cut it off
and do flaring work again.
1 Align the center of the pipes and sufficient-
ly tighten the flare nut by hand
2 Tighten the flare nut with a wrench
Putting nut on
Flare nut
Copper tube
Flaring work
Outside diameter Temper grade A
mm inch Annealed(o) mm
Ø6.35 1/4 Annealed(o) 1.1~1.3
Ø9.52 3/8 Annealed(o) 1.5~1.7
Ø12.7 1/2 Annealed(o) 1.6~1.8
Ø15.88 5/8 Annealed(o) 1.6~1.8
Check
Connecting the installation pipe
and drain hose to the indoor unit.
Outside diameter Torque
mm inch kgf
.
m
Ø6.35 1/4 1.8~2.5
Ø9.52 3/8 3.4~4.2
Ø12.7 1/2 5.5~6.5
Ø15.88 5/8 6.3~8.2
CAUTION
• The installation of pipe-work shall be
kept to a minimum
• Flared joint shall be restricted to use
with annealed pipe only, and to pipe
sizes not exceeding a diameter of 20
mm outside diameter.
!
Wrench
Indoor unit tubing
Open-end wrench
(fixed)
Connection
pipe
Flare nut
CAUTION
Copper in contact with refrigerants shall
be oxygen-free or de-oxidized, for exam-
ple Cu-DHP as specified in EN 12735-1
and EN 12735-2
!
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Indoor unit tubing Flare nut Pipes
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LG UV42R.N20 Ghid de instalare

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