LG S092CG User manual

Room Air Conditioner
SVC MANUAL(Exploded View)
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com
MODELS: S092CG N40 S092CG U40 S092CG S41 S092CP S41
S122CG N40 S122CG U40 S122CG S41 S122CP S41
S122HG N40 S122HG U40 S122HG S41
S182CG N50 S182CG U50 S182CG S52 S182CP S52
S182HG N50 S182HG U50 S182HG S51
S242CG N50 S242CG U50 S242CG S51 S242CP S51
S242HG N50 S242HG U50 S242HG S51
S092CG N41 S092CG U41 S122DC S40 S122DC S40
S242CG N51 S242CG U51 S122DP S41 S122DP S41
S182CG N51 S182CG U51 S122DH S40 S122DH S40
G122C SR2 S182DP S52 S182DP S52
S182GP S52 S182GP S52

- 2 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Air Conditioner Service Manual
TABLE OF CONTENTS
LG Model Name ...............................................................................................................................................3
Safety Precautions..........................................................................................................................................5
Dimensions....................................................................................................................................................10
Symbols Used in this Manual...................................................................................................................10
Indoor Unit................................................................................................................................................10
Outdoor Unit.............................................................................................................................................13
Product Specifications .................................................................................................................................16
Installation .....................................................................................................................................................18
Selection of the Best Location..................................................................................................................18
Piping Length and Elevation.....................................................................................................................18
How to Fix Installation Plate.....................................................................................................................19
Drill a Hole in the Wall ..............................................................................................................................19
Drain hose junction...................................................................................................................................19
Flaring work and connection of piping .......................................................................................................20
Flaring work..............................................................................................................................................20
Connection of Piping Indoor.....................................................................................................................20
Connection of the Pipes-Outdoor.............................................................................................................24
Connecting the cable between indoor unit and outdoor unit ...................................................................25
Connect the Cable to the Indoor Unit.......................................................................................................25
Connect the Cable to the Outdoor Unit ....................................................................................................26
Checking the drainage and forming the pipings........................................................................................27
Checking the Drainage.............................................................................................................................27
Form the Piping........................................................................................................................................27
AIR PURGING ................................................................................................................................................28
Air purging................................................................................................................................................28
Air purging with vacuum pump .................................................................................................................28
Test Running .................................................................................................................................................30
Operation .......................................................................................................................................................31
Function of Controls .................................................................................................................................31
Display Function ......................................................................................................................................35
Self-diagnosis Function............................................................................................................................35
Remote Control Operations......................................................................................................................36
Disassembly ..................................................................................................................................................37
Indoor Unit................................................................................................................................................37
Schematic Diagram.......................................................................................................................................40
Electric Control Device.............................................................................................................................40
Wiring Diagram.........................................................................................................................................41
Components Location ..............................................................................................................................45
Troubleshooting Guide .................................................................................................................................47
Refrigeration Cycle Diagram ....................................................................................................................47
2-way, 3-way Valve .................................................................................................................................48
Cycle Parts...............................................................................................................................................54
Electronic Parts ........................................................................................................................................55
Exploded View...............................................................................................................................................62

- 3 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
LG Model Name
2003
12 - 345678910
Code Type Code of Model Meaning
1 Producing Center, A~Z L: Chang-won R22 N: India
Refrigerant A: Chang-won R410A Z: Brazil
C: Chang-won R407C D: Indonesia
T: China M: Mexico
K: Turkey R22 V: Vietnam
E: Turkey R410A S: Out Sourcing
H: Thailand
2 Product Type A~Z S: Split Type Air Conditioner
3 Cooling/Heating/Inverter A~Z C: Cooling only
H: Heat pump
X: C/O + E/Heater
Z: H/P + E/Heater
V: AC Inverter C/O
N: AC Inverter H/P
Q: DC Inverter C/O
W: DC Inverter H/P
4, 5 Capacity 0~9 Cooling/Heating Capacity
Ex. "09" →9,000 Btu/h
6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase
A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase
3: 208-230V/60Hz C: 575V, 50Hz, 3Phase
5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase
6: 220-240V/50Hz E: 265V, 60Hz
7: 110V, 50/60Hz F: 200V, 50/60Hz
8: 380-415V/50Hz
9: 380-415V/60Hz
7 Chassis A~Z Name of Chassis of Unit
Ex. LSP →SP Chassis
8 Look A~Z Look,
Color (Artcool Model)
9 Function A~Z
10 Serial No. 1~9 LG Model De
* ARTCOOL COLOR
velopment Serial No.
Basic A
Basic+4Way B
Plasma Filter C
Plasma Filter+4 Way D
Tele+LCD E
Tele+LCD+Nano plasma+4Way F
Nano Plasma F+(A/changeove)+A/clean+Low A G
Nano Plasma F+(A/changeove)+A/clean+4way+Low A H
Tele+LED+4way I
Internet J
Plasma F+4Way+Oxy generator K
Nano Plasma F+(A/changeove)+A/clean L
Nano Plasma F+(A/changeove)+A/clean+4way M
Nano Plasma F+(A/changeove)+A/clean+PTC N
Nano Plasma F+(A/changeove)+Autoclean+4way+PTC P
Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC Q
Negative ION+A/Clean R
(Nano)Plasma+Negative ION+A/Clean S
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean T
Nano Plasma F+4Way+(A/changeove)+A/clean+ U
R Mirror
W White
B Blue
D Wood
M Metal
C Cherry

- 4 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
2004~
12 - 345678910
Code Type Code of Model Meaning
1 Producing Center, A~Z
L Chang_won R22
A Chang_won R410A
C Chang_won R407C
T China
K Turkey R22
E Turkey R410A
H Thailand
N India
Z Brazil
D Indonesia
X Mexico
V Vietnam
S Out sourcing
Refrigerant
2 Product Type A~Z S: Split Type Air Conditioner
3 Cooling/Heating/Inverter A~Z C: Cooling only
H: Heat pump
X: C/O + E/Heater
Z: H/P + E/Heater
V: AC Inverter C/O
N: AC Inverter H/P
Q: DC Inverter C/O
W: DC Inverter H/P
4, 5 Capacity 0~9 Cooling/Heating Capacity
Ex. "09" →9,000 Btu/h
6 Electric Range 1~9 1: 115V/60Hz, A: 220V, 50Hz, 3Phase
A~Z 2: 220V/60Hz B: 208~230V, 60Hz, 3Phase
3: 208-230V/60Hz C: 575V, 50Hz, 3Phase
5: 200-220V/50Hz D: 440~460, 60Hz, 3Phase
6: 220-240V/50Hz E: 265V, 60Hz
7: 110V, 50/60Hz F: 200V
CHASSIS Look
D
K
L
G
M
N
D
P
Division
Panel Type(Deluxe)
Fighting 'Look'
(LG1)
(LG2)-SEMI PANEL
OEM1
OEM2
Panel Type(Deluxe)
LG3
, 50/60Hz
8: 380-415V/50Hz
9: 380-415V/60Hz
7 Chassis A~Z Name of Chassis of Unit
Ex. LSP →SP Chassis
8 Look A~Z Look,
Color (Artcool Model)
9 Function A~Z
10 Serial No. 1~9 LG Model De
* ARTCOOL COLOR
velopment Serial No.
R Mirror
W White
B Blue
D Wood
M Metal
C Cherry
S4/S5
S6
SQ
SR
ST
Basic A
Basic+4Way B
Plasma Filter C
Plasma Filter+4 Way D
Tele+LCD E
Tele+LCD+Nano plasma+4Way F
NBF F+(A/changeove)+A/clean+Low A G
NBF F+(A/changeove)+A/clean+4way+Low A H
Tele+LED+4way I
Internet J
Plasma F+4Way+Oxy generator K
NBF F+(A/changeove)+A/clean L
NBF F+(A/changeove)+A/clean+4way M
NBF F+(A/changeove)+A/clean+PTC N
NBF F+(A/changeove)+Autoclean+4way+PTC P
NBF F+(A/changeove)+A/clean+4way+Low A+PTC Q
(Nano)Plasma+ION+A/Clean S
4way+(Nano)Plasma F+
Negative ION+Healthy dehumidification +A/Clean T
Nano Plasma F+4Way+(A/changeove)+A/clean+Oxy generator U
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean+Oxy generator V
Dry contact W
Wire remocon 8

- 5 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must
be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is
classified by the following indications.
■Meanings of symbols used in this manual are as shown below.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
Do not use damaged power cords, plugs, or a
loose socket.
Always use the power plug and socket with the
ground terminal.
• There is risk of fire of electric shock. • There is risk of electric shock.
Install the panel and the cover of control box
securely.
.Do not modify or extend the power cord.
• There is risk of fire of electric shock. • No grounding may cause electric shock.
■Installation

- 6 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
Do not install the product on a defective instal-
lation stand.
Be sure the installation area does not
deteriorate with age.
• It may cause injury, accident, or damage to the
product.
• If the base collapses, the air conditioner could fall
with it, causing property damage, product failure,
and personal injury.
• Sharp edges could cause injury. Be especially care-
ful of the case edges and the fins on the condenser
and evaporator.
• There is risk of fire, electric shock, explosion, or injury.
Be cautious when unpacking and installing the
product.
For installation, always contact the dealer or
an Authorized service center
For re-installation of the installed product,
always contact a dealer or an authorized ser-
vice center.
Do not install, remove, or re-install the unit by
yourself.
• There is risk of fire, electric shock, explosion, or
injury.
• There is risk of fire, electric shock, explosion, or
injury.

- 7 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Safety Precautions
■Operation
Do not turn the air-conditioner ON or OFF by
plugging or unplugging the power plug.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock. • There is risk of fire or electrical shock.
Grasp the plug to remove the cord from the
outlet. Do not touch it with wet hands.
Do not place a heater or other appliances near
the power cable.
• There is risk of fire or electrical shock. • There is risk of fire and electric shock.
Do not allow water to run into electrical parts. Do not store or use flammable gas or com-
bustibles near the air conditioner.
• There is risk of fire, failure of the product, or electric
shock.
• There is risk of fire or failure of product.
Wax
Thinner

- 8 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Always check for gas (refrigerant) leakage after
installation or repair of product.
Install the drain hose to ensure that water is
drained away properly.
• Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage.
Keep level even when installing the product. Use two or more people to lift and transport
the air conditioner.
• To avoid vibration or water leakage. • Avoid personal injury.
■Installation
90˚
Unplug the unit if strange sounds, odors, or
smoke comes from it.
Be cautious that water could not enter the
product.
• There is risk of electric shock or fire. • There is risk of fire, electric shock, or product dam-
age.
Safety Precautions

- 9 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Use a soft cloth to clean. Do not use harsh
detergents, solvents, etc.
Do not touch the metal parts of the product
when removing the air filter. They are very
sharp!
• There is risk of fire, electric shock, or damage to the
plastic parts of the product.
• There is risk of personal injury.
Do not step on or put anyting on the product.
(outdoor units)
Do not insert hands or other objects through
the air inlet or outlet while the air conditioner
is plugged in.
• There is risk of personal injury and failure of product. • There are sharp and moving parts that could cause
personal injury.
■Operation
Wax
Safety Precautions

- 10 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
Dimensions
Installation plate
D
H
W
W mm 840
H mm 270
D mm 153
Model
Dimension
9k, 12k Btu Series
Indoor Unit
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the
air conditioner.
This symbol indicates special notes.
NOTICE
Symbols Used in this Manual

- 11 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
Installation plate
D
H
W
W mm 1090
H mm 300
D mm 178
Model
Dimension
18k, 24k Btu Series

- 12 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
Installation plate
D
H
W
W mm 900
H mm 285
D mm 156
Model
Dimension
12k (G122C SR2)

- 13 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
WL2
L3
L1
D
H
L4
L5
Gas side
(3-way valve)
Liquid side
(2-way valve)
Outdoor Unit
MODEL
DIM unit
W mm 575 717
H mm 525 498
D mm 260 229
L1 mm 301 270
L2 mm 73 56
L3 mm 392 464
L4 mm 35 17
L5 mm 100 130
12k9k

- 14 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
W
D
L1
L2
H
L3
L4
L5L6 L7 L8
L9 L10
Liquid side
2-way valve
Gas side
3-way valve
MODEL 18k Btu Cooling Only Model
DIM unit
W mm 801
H mm 555
D mm 262
L1 mm 339
L2 mm 37
L3 mm 543.6
L4 mm 11.4
L5 mm 591
L6 mm 105
L7 mm 105
L8 mm 72.5
L9 mm 86.4
L10 mm 77
Dimensions

- 15 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Dimensions
MODEL
DIM
WL2
L3
L1
D
H
L4
L5
Gas side
(3-way valve)
Liquid side
(2-way valve)
W mm 840
H mm 577
D mm 276
L1 mm 337
L2 mm 64
L3 mm 611
L4 mm 16
L5 mm 156
18k, 24k Btu Heat Pump,
24k Btu Cooling Only Model

- 16 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Product Specifications
Table-1
Product Specifications
Model Name
Item Unit
Cooling Capacity Btu/h
Heating Capacity
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input Cooling W
Heating
Running Cooling A
Current Heating
E.E.R. Cooling Btu/hW
C.O.P Heating
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Left & Right)
Chaos Wind
Timer
Self Diagnosis
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
9,000 12,000
1.2 1.2
1Ø, 220V, 60Hz 1Ø, 220V, 60Hz
6.5 8.2
20 22
33 41
48 49
880 1,200
4.1 5.7
10.23 10.0
714
23 23
840x270x153 840x270x153
575x525x260 717x481x228
77
25 25
660(R22) 650(R22)
OO
XX
OO
24Hr ON/OFF 24Hr ON/OFF
OO
L.C.D wireless L.C.D wireless
1/4" (6.35) 1/4" (6.35)
3/8" (9.52) 1/2" (12.7)
OO
OO
1.0mm2 x 3 1.0mm2 x 3
1.0mm21.0mm2
12,000
12,500
1.2
1Ø, 220V, 60Hz
8.2
22
41
49
1,150
1,150
5.4
5.4
10.4
10.9
14
23
840X270X153
717X481X228
7
25
850(R22)
O
X
O
24Hr ON/OFF
O
L.C.D wireless
1/4” (6.35)
1/2” (12.7)
O
O
1.0mm2 x 3
1.0mm2
12,000
-
1.2
1Ø, 220~240V, 50Hz
8.8/9.5
22
40
49
1,250
-
5.6
-
9.6
-
9.5
23
900X285X156
717X481X228
7.2
25
660(R22)
O
X
O
7Hr OFF
O
L.C.D wireless
1/4” (6.35)
1/2” (12.7)
X
O
1.0mm2 x 3, 0.75mm2 x 2
1.0mm2
S092CG
S092CP
S122CG
S122DC
S122DP
S122HG
S122DH G122C SR2

- 17 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Product Specifications
Table-2
Model Name
Item Unit
Cooling Capacity Btu/h
Moisture Removal l/h
Power Source Ø, V, Hz
Air Circulation Indoor m3/min
Outdoor
Noise Level Indoor dB (A)±3
Outdoor
Input W
Running A
E.E.R. Btu/hW
Motor Output Indoor W
Outdoor
Dimensions Indoor mm
(W x H x D) Outdoor
Net. Weight Indoor kg
Outdoor
Refrigerant g
Airflow Direction Control (Up & Down)
Airflow Direction Control (Left & Right)
Chaos Wind
Timer
Self Diagnosis
Remocon Type
Service Valve Liquid inch(mm)
Gas
Sleeping Operation
Drain Hose
Connecting Cable
Power Cord
18,000 24,000
1.8 2.9
1
Ø, 220V, 60Hz 1 Ø, 220V, 60Hz
13 15
42 42
42 45
56 56
1,950 2,350
8.9 11.0
9.23 10.21
20.6 19
45 86
1090 x 300 x 178 1090 x 300 x 178
801 x 555 x 262 840 x 577 x 276
13.5 13.5
60 60
1,240(R22) 1,350(R22)
OO
OO
OO
24Hr ON/OFF 24Hr ON/OFF
OO
L.C.D wireless L.C.D wireless
1/4"(6.35) 3/8"(9.52)
5/8"(15.88) 5/8"(15.88)
OO
OO
1.5 mm2 x 3 2.5 mm2 x 3
1.5mm2 x 3 2.5mm2 x 3
18,500/19,800 24000/26,400
1.8 2.9
1\
1 Ø ,220V,60Hz 1 Ø ,220V,60Hz
13 15
42 42
42 45
56 56
1,960/1,810 2,600/2,550
9/8.5 12/11.5
9.44/10.94 9.23/10.35
20.6 19
45 86
1090
x 300 x 178 1090 x 300 x 178
840 x 577 x 276 840 x 577 x 276
13.5 13.5
60 60
1,200(R22) 1,480(R22)
OO
OO
OO
24Hr ON/OFF 24Hr ON/OFF
OO
L.C.D wireless L.C.D wireless
1/4"(6.35) 3/8"(9.52)
5/8"(15.88) 5/8"(15.88)
OO
OO
1.5mm
2
x 3, 0.75mm
2
x 3 2.5mm
2
x 3, 0.75mm
2
x 3
1.5mm
2
x 3 2.5mm
2
x 3
S182CG
S182CP
S182DP
S182GP
S242CG
S242CP S182HG S242HG

- 18 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Installation
Indoor unit
• Do not have any heat or steam near the unit.
• Select a place where there are no obstacles in front of the
unit.
• Make sure that condensation drainage can be conveniently
routed away.
Do not install near a doorway.
• Ensure that the space around the left and right of the unit is
more than "A". The unit should be installed as high on the
wall as possible, allowing a minimum of "B" from ceiling.
• Use a stud finder to locate studs to prevent unnecessary
damage to the wall.
Outdoor unit
• 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 space around the back and sides is more
than 10cm. The front of the unit should have more than
70cm of space.
• 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.
Rooftop Installations:
• If the outdoor unit is installed on a roof structure, be
sure to level the unit. Ensure the roof structure and
anchoring method are adequate for the unit location.
• Consult local codes regarding rooftop mounting.
More than 10cm
More than
5cm
More than 2.3m
More than
5cm
• Capacity is based on standard length and maxi-
mum allowance length is on the basis of reliability.
• Oil trap should be installed every 5~7 meters.
Grade Clearance(cm)
AB
5K~28K 10 5
30K~38K 30 12
Pipe Size
Capacity
(Btu/h) GAS LIQUID
Max.
Length
A (m)
Additional
Refrigerant
(g/m)
Max.
Elevation
B(m)
Standard
Length
(m)
5k~14k 3/8"(Ø9.52) 1/4"(Ø6.35) 4 or 7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 7 15 20
1/2"(Ø12.7) 1/4"(Ø6.35) 4 or 7.5 15 30 20
18k~28k 5/8"(Ø15.88) 1/4"(Ø6.35) 4 or 7.5 15 30 20
5/8"(Ø15.88) 3/8"(Ø9.52) 4 or 7.5 15 30 30
30k~38k 5/8"(Ø15.88) 3/8"(Ø9.52) 7.5 15 30 30
3/4"(Ø19.05) 3/8"(Ø9.52) 7.5 15 30 50
If case more than 5m
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
Outdoor unit
Indoor unit
B
I
Selection of the Best Location
Piping Length and Elevation
Install the indoor unit on the wall where the height
from the floors more than 2.3 meters.
More than 10cm More than 10cm
More
than 60cm
More than 60cm
More than 70cm
Installation

- 19 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Installation
How to Fix Installation Plate
The wall you select should be strong and solid
enough to prevent vibration
1. Mount the installation plate on the wall with
four type A screws. If mounting the unit on a
concrete wall, use anchor bolts.
• Mount the installation plate horizontally by align-
ing the centerline using a level.
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.
ABCD
7K,9K,12K 75 65 105 65
18K, 24K 105 65 260 65
SR2(12K) 0 40 20 40
CHASSIS
(Grade)
Distance (mm)
Installation Plate
Type "A" screw
Chassis
Hook
Installation plat
SR2(12K)
SR2(12K)
e
Left rear piping Right rear piping
Ø70mm Ø70mm
DB
A
C
Installation Plate
Type "A" screw
Installation plate
Ø70mm
Left rear piping Right rear piping
C
D
B
AØ70mm
• Drill the piping hole with a ø70mm hole core drill.
Drill the piping hole at either the right or the left
with the hole slightly slanted to the outdoor side.
• Open the Front Grille.
• Pass Telephone Control Cord Wire through the hole
which the power cord goes through.
• Connect Telephone Control Cord Wire to the phone jack
of telephone PCB of Control Box.
• Fix Telephone Control Cord Wire inside Control box so
as not to disconnect.
• Close the Front Grille.
Drill a Hole in the Wall
Drain hose junction
• Remove the rubber stopple in the desired drain direc-
tion.
• Insert drain hose into the handle of drain pan, and join
drain hose and connecting hose according to the figure
by.
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Connecting
part
Adhesive
Drain
hose
Only the
desired direction

- 20 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes LGE Internal Use Only
Flaring work and connection of piping
Flaring work
Flaring work
Main cause for refrigerant leakage is due to defect in the
flaring work. Carry out correct flaring work using the follow-
ing procedure.
Cut the pipes and the cable.
• Use the piping kit accessory or pipes purchased locally.
• Measure the distance between the indoor and the outdoor unit.
• Cut the pipes a little longer than the measured distance.
• Cut the cable 1.5m longer than the pipe length.
Check
• Compare the flared work with figure below.
• If flare is noted to be defective, cut off the flared sec-
tion and re-flare it.
• Preparing the indoor unit's piping and drain hose for instal-
lation through the wall.
• Remove the plastic tubing retainer(see illustration below)
and pull the tubing and drain hose away from chassis.
• Replace the plastic tubing holder in the original
position.(Optional)
• Carry out flaring work using flaring tool as shown below.
Burr removal
• Completely remove all burrs from the cut cross section of
pipe/tube.
• Put the end of the copper tube/pipe in a downward direc-
tion as you remove burrs in order to avoid dropping burrs
into the tubing.
Putting nut on
• 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 flaring work)
Flaring work
• Firmly hold copper pipe in a die in the dimension shown in
the table above.
Copper
pipe
90°Slanted Uneven Rough
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 =
Drain hose
Pipe
Reamer
Point down
Flare nut
Copper tube
mm inch mm
Ø6.35 1/4 0~0.5
Ø9.52 3/8 0~0.5
Ø12.7 1/2 0~0.5
Ø15.88 5/8 0~1.0
Ø19.05 3/4 1.0~1.3
Outside diameter A
Connection of piping -- Indoor
When install, make sure that the
remaining parts must be removed
clearly so as not to damage the pip-
ing and drain hose, especially power
cord and connecting cable.
Flaring work and connection of piping