LG AS-H0766KA2 / AS-H0966KA2 / AS-H126RKA2 / LS-H0766KA2 / LS-H0966KA2 / LS-H126RKA2 / LS-C126RKA2 Service Manual ▷ View online
Service Manual 17
Flaring work and connection of piping
Route the indoor tubing and the drain hose in the direction of
rear right.
rear right.
Drain hose
Insert the connecting cable into the indoor unit from the out-
door unit through the piping hole.
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.
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.
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.
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).
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.
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.
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.
vinyl tape so that there is no gap.
• Wrap the area which accommodates the rear piping hous-
ing section with vinyl tape.
Connecting
pipe
pipe
Connecting cable
Tape
Drain hose
Drain hose
Connecting
cable
Indoor unit tubing
Flare nut
Pipes
Wrench
Indoor unit tubing
Open-end wrench (fixed)
Connection pipe
Flare nut
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
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
Plastic bands
Insulation material
Vinyl tape(narrow)
Connection
pipe
pipe
Connecting cable
Vinyl tape
(wide)
(wide)
Wrap with vinyl tape
Indoor
unit pipe
unit pipe
Pipe
For right rear piping
18 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.
the rear piping housing section.
Connecting the pipings to the indoor unit and
the drain hose to drain pipe.
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.
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.
vinyl tape so that there is no gap.
Route the indoor tubing and the drain hose to
the required piping hole position.
the required piping hole position.
Insert the piping, drain hose, and the connect-
ing cable into the piping hole.
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.
from the wall.
Tape the drain hose and the connecting cable.
• Connecting cable
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
For left rear piping
Drain pipe
Connecting cable
Installation plate
Spacer
Indoor unit
8cm
Indoor unit tubing
Flare nut
Pipes
Wrench
Indoor unit tubing
Connection pipe
Flare nut
Open-end wrench (fixed)
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
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
Plastic bands
Insulation material
Service Manual 19
Installation Information (For left piping)
• Good case
For left piping. Follow the instruction below.
• Press on the upper side of clamp. ( )
Flaring work and connection of piping
• Wrap the area which accommodates the rear piping hous-
ing section with vinyl tape.
Indoor unit installation
• Remove the spacer.
• 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(clicking sound).
installation plate until the hooks engage into their
slots(clicking sound).
• Bundle the piping and drain hose together by wrapping
them with cloth tape over the range within which they fit
into the rear piping housing section.
into the rear piping housing section.
Reroute the pipings and the drain hose across
the back of the chassis.
the back of the chassis.
Set the pipings and the drain hose to the back
of the chassis with the tubing holder.
of the chassis with the tubing holder.
• Hook the edge of tubing holder to tap on chassis and push
the bottom of tubing holder to be engaged at the bottom of
chassis.
chassis.
Vinyl tape(narrow)
Connection
pipe
pipe
Connecting cable
Indoor
unit piping
unit piping
Pipe
Vinyl tape
(wide)
(wide)
Wrap with vinyl tape
Drain hose
Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
vinyl tape(wide)
Piping for
passage through
piping hole
passage through
piping hole
Tubing holder
Drain hose
Connecting
cable
• Unfold the tubing to downward slowly. ( )
• Bend the tubing to the left side of chassis.
20 Room Air Conditioner
Flaring work and connection of piping
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
tighten the flare nut by hand.
Finally, tighten the flare nut with torque wrench
until the wrench clicks.
until the wrench clicks.
• When tightening the flare nut with torque wrench, ensure
the direction for tightening follows the arrow on the wrench.
• Bad case
• Following bending type from right to left could cause
problem of pipe damage.
Connection of the pipes-Outdoor
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
Outdoor unit
Gas side piping
(Bigger diameter)
(Bigger diameter)
Liquid side
piping
(Smaller
diameter)
piping
(Smaller
diameter)
Torque wrench
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