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Model: AS-C0764DM0 AS-H0764DM0 LS-C1264DM0 LS-H0764DM0 AS-C0964DM0 AS-H0964DM0 LS-C1865DM0 LS-H0964DL0 AS-C1264DM0 AS-H1264DM0 LS-C2665DM0 LS-H1264DM0 AS-C1865DM0 AS-H1865DM0 LS-C0964DA0 LS-H1865DM0 AS-C2465DM0 AS-H2465DM0 LS-C0964DM0 LS-H2665DM0 AS-C0764DB0 AS-H0764GM0 LS-C1865DB0 LS-H2465DM0 AS-C0964DB0 AS-H0964GM0 LS-C1264DA0 LS-H0964DM0 AS-C1264DB0 AS-H1264GM0 LS-C2465DB0 AS-C1865DB0 AS-H1865GM0 LS-C2465GB0 AS-C2465DB0 AS-H2465GM0 LS-C1865DM1 LS-C1865GB0 LS-C2665DM1 AS-C0764DH0 AS-C0964DH0 AS-C1264DH0 AS-C1865DH0 AS-C2465DH0 AS-C0964DA0 AS-C1264DA0 AS-C0964GA0 AS-C1264GA0 AS-C1865GB0 AS-C2465GB0 AS-H0964DA0 AS-H1264DA0 AS-H1865DB0 LS-C1264DM1 AS-H2465DB0 LS-C1264GA0 AS-H0964GA0 LS-C1264GB0 AS-H1264GA0 LS-C0964DM1 AS-H1865GB0 AS-H2465GB0 AS-H2465DM1 LS-H0964DY0 LS-H1264DY0 LS-H1865DY0 LS-H2465DY0 LS-H0764DM1 LS-H0964DM1 LS-H1264DM1 LS-H1865DM1 LS-H2465DM1 LS-H2665DM1 LS-H2465GB0 LS-H0964GB0 LS-H1264GB0
Pages: 105
Size: 7.49 MB
Type: PDF
Document: Service Manual
Brand: LG
Device: Air Conditioner
File: as-c0764dm0-as-h0764dm0-ls-c1264dm0-ls-h0764dm0-as.zip
Date: 2018-11-20

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Service Manual  17
Installation
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 aligning
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 typi-
cally. Drilling the hole through the wall for pip-
ing connections must be done safely.
• 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.
How to Fix Installation Plate
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.
A
B
C
D
S4
73
55
82
55
S5
121
62
258
62
CHASSIS
(Grade)
Distance (mm)
A
B
C
D
S4
50
105
59
105
SE
65
110
85
110
S5
95
122
235
122
CHASSIS
(Grade)
Distance (mm)
Installation plate
Left rear piping
Right rear piping
Ø70mm
Ø70mm
D
B
A
C
5-7mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Connecting
part
Adhesive
Drain
hose
Only the 
desired direction
Type 1.
Installation plate
Left rear piping
Right rear piping
Ø70mm
Ø70mm
D
B
A
C
Type 2.

18 Room Air Conditioner
Flaring work and connection of piping
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.

Service Manual  19
Flaring work and connection of piping
Route the indoor tubing and the drain hose in the direction of
rear right.
Drain hose
Connecting
cable
Vinyl tape(narrow)
Connection
pipe
Connecting cable
Vinyl tape
(wide)
Wrap with vinyl tape
Indoor 
unit pipe
Pipe
Plastic bands
Insulation material
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
Indoor unit tubing
Flare nut
Pipes
Drain hose
Connecting 
pipe
Connecting cable
Tape
Drain hose
Insert the connecting cable into the indoor unit from the out-
door unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection later.
Tape the tubing, drain hose, and the connecting cable. Be
sure that the drain hose is located at the lowest side of the
bundle. Locating at the upper side can cause drain pan to
overflow inside the unit.

NOTE: 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.
Indoor unit installation
• Hook the indoor unit onto the upper portion of the installa-
tion plate.(Engage the two hooks of the rear top of the
indoor unit with the upper edge of the installation plate.)
Ensure that the hooks are properly seated on the installa-
tion plate by moving it left and right.
Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their slots(click-
ing sound).
Connecting the pipings to the indoor unit and
drain hose to drain pipe.
• Align the center of the pipes and sufficiently tighten
the flare nut by hand.
• Tighten the flare nut with a wrench.
• When extending the drain hose at the indoor unit, install the
drain pipe.
Wrap the insulation material around the con-
necting portion.
•Overlap the connection pipe insulation material and the
indoor unit pipe insulation material. Bind them together with
vinyl tape so that there is no gap.
• Wrap the area which accommodates the rear piping hous-
ing section with vinyl tape.
mm
inch
kg.m
Ø6.35
1/4
1.8
Ø9.52
3/8
4.2
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
6.6
Outside diameter
Torque
For right rear piping

20 Room Air Conditioner
Flaring work and connection of piping
• Bundle the piping and drain hose together by wrapping
them with vinyl tape for enough to cover where they fit into
the rear piping housing section.
Connecting the pipings to the indoor unit and
the drain hose to drain pipe.
• Align the center of the pipes and sufficiently tighten the
flare nut by hand.
• Tighten the flare nut with a wrench.
• When extending the drain hose at the indoor unit, install the
drain pipe.
Wrap the insulation material around the con-
necting portion.
• Overlap the connection pipe heat insulation and the indoor
unit pipe heat insulation material. Bind them together with
vinyl tape so that there is no gap.
Route the indoor tubing and the drain hose to
the required piping hole position.
Insert the piping, drain hose, and the connect-
ing cable into the piping hole.
Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection later.
Indoor unit installation
• Hang the indoor unit from the hooks at the top of the instal-
lation plate.
• Insert the spacer etc. between the indoor unit and the
installation plate and separate the bottom of the indoor unit
from the wall.
Tape the drain hose and the connecting cable.
• Connecting cable
Drain pipe
Connecting cable
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
Indoor unit tubing
Flare nut
Pipes
Installation plate
Spacer
Indoor unit
8cm
Plastic bands
Insulation material
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
Wrench
Indoor unit tubing
Connection pipe
Flare nut
Open-end wrench (fixed)
For left rear piping 
mm
inch
kg.m
Ø6.35
1/4
1.8
Ø9.52
3/8
4.2
Ø12.7
1/2
5.5
Ø15.88
5/8
6.6
Ø19.05
3/4
6.6
Outside diameter
Torque

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