LG LS-K1860HL Service Manual ▷ View online
- 27 -
1) Flaring work
Main cause for gas leakage is due to defect in flar-
ing work. Carry out correct flaring work in the follow-
ing procedure.
ing work. Carry out correct flaring work in the follow-
ing procedure.
1. Cut the pipes and the cable.
Use the piping kit accessory or the pipes pur-
chased locally.
Measure the distance between the indoor and
the outdoor unit.
Cut the pipes a little longer than measured dis-
tance.
Cut the cable 1.5m longer than the pipe length.
chased locally.
Measure the distance between the indoor and
the outdoor unit.
Cut the pipes a little longer than measured dis-
tance.
Cut the cable 1.5m longer than the pipe length.
2. Burrs removal
Completely remove all burrs from the cut cross
section of pipe/tube.
Put the end of the copper tube/pipe in a down-
ward direction as you remove burrs in order to
avoid dropping burrs into the tubing.
section of pipe/tube.
Put the end of the copper tube/pipe in a down-
ward direction as you remove burrs in order to
avoid dropping burrs into the tubing.
3. Putting nut on
Remove flare nuts attached to indoor and out-
door unit, then put them on pipe/tube having
completed burr removal.
(not possible to put them on after flaring work)
door unit, then put them on pipe/tube having
completed burr removal.
(not possible to put them on after flaring work)
Copper
pipe
90
°
Slanted Uneven Rough
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Pipe
Reamer
Point down
4. Flaring work
Carry out flaring work using flaring tool as shown
below.
below.
Firmly hold copper pipe in a die in the dimension
shown in the table above.
shown in the table above.
5. Check
Compare the flared work with figure below.
If flare is noted to be defective, cut off the flared
section and do flaring work again.
If flare is noted to be defective, cut off the flared
section and do flaring work again.
Outside diameter
A
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
Flare nut
Copper tube
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
2. Flaring Work and Connection of Piping
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2) Connection of piping-Indoor
Preparing the indoor unit's piping and drain hose
for installation through the wall.
Remove the plastic tubing retainer(see illustra-
tion below) and pull the tubing and drain hose
away from chassis.
Replace the plastic tubing holder in the original
position.
for installation through the wall.
Remove the plastic tubing retainer(see illustra-
tion below) and pull the tubing and drain hose
away from chassis.
Replace the plastic tubing holder in the original
position.
1. Route the indoor tubing and the drain hose in the
direction of rear left.
2. Insert the connecting cable into the indoor unit
from the outdoor unit through the piping hole.
Do not connect the cable to the indoor unit.
Make a small loop with the cable for easy con-
nection later.
nection later.
4. Indoor unit installation
Hook the indoor unit onto the upper portion of
the installation 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 installation
plate by moving it left and right.
the installation 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 installation
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).
3. 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
lowest side of the bundle. Locating at the upper
side can cause drain pan to overflow inside the
unit.
5. Connecting the pipings to the indoor unit and
drain hose to drain pipe.
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
tighten the flare nut by hand.
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.
"sweating"(condensation) will not damage furniture or
floors.
*Foamed polyethylene or equivalent is recommended.
To remove the holder,
press the bottom of
chassis near the holder
upward and pull the tab
out of its hole.
press the bottom of
chassis near the holder
upward and pull the tab
out of its hole.
Tubing holder
Pull
Press
2
1
Connecting
cable
cable
Loop
Gas side
piping
piping
Liquid side
piping
piping
Drain hose
Drain hose
Connecting
cable
Drain hose
Indoor unit tubing
Flare nut
Pipings
For left rear piping
CAUTION
When install, make sure that
the remaining parts must be
removed clearly so as not to
damage the piping and drain
hose, especially power cord
and connecting cable.
the remaining parts must be
removed clearly so as not to
damage the piping and drain
hose, especially power cord
and connecting cable.
- 29 -
6. Wrap the insulation material around the connect-
ing 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.
and the indoor unit pipe insulation material.
Bind them together with vinyl tape so that there
is no gap.
1. Route the indoor tubing and the drain hose to the
required piping hole position.
2. Insert the piping, drain hose and the connecting
cable into the piping hole.
Plastic bands
Insulation material
Drain pipe
Connecting cable
Vinyl tape(narrow)
Connection
pipe
pipe
Connecting cable
Vinyl tape
(wide)
(wide)
Wrap with vinyl tape
Indoor
unit pipe
unit pipe
Pipe
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pip
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
When extending the drain hose at the indoor
unit, install the drain pipe.
unit, install the drain pipe.
Tighten the flare nut with a wrench.
18K, 24K, 26K
1/2"[5.5kg.m]
1/4"[1.8kg.m]
5/8"[6.6kg.m]
3/8"[4.2kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
Wrap the area which accommodates the rear
piping housing section with vinyl tape.
piping housing section with vinyl tape.
Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
For right rear piping
Wrap with vinyl tape
Drain hose
Pipe
Vinyl tape(wide)
- 30 -
3. 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 con-
nection later.
Make a small loop with the cable for easy con-
nection later.
4. Tape the drain hose and the connecting cable.
Connecting cable
5. Indoor unit installation
Hang the indoor unit from the hooks at the top of
the installation plate.
Insert the spacer etc. between the indoor unit
and the installation plate and separate the bot-
tom of the indoor unit from the wall.
the installation plate.
Insert the spacer etc. between the indoor unit
and the installation plate and separate the bot-
tom of the indoor unit from the wall.
Installation plate
Spacer
Indoor unit
8cm
6. Connecting the pipings to the indoor unit and the
drain hose to drain pipe.
Align the center of the pipings and sufficiently
tighten the flare nut by hand.
tighten the flare nut by hand.
Tighten the flare nut with a wrench.
7. Wrap the insulation material around the connect-
ing 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.
the indoor unit pipe heat insulation material. Bind
them together with vinyl tape so that there is no
gap.
Plastic bands
Insulation material
Vinyl tape(narrow)
Connection
pipe
pipe
Connecting cable
Indoor
unit piping
unit piping
Pipe
Vinyl tape
(wide)
(wide)
Wrap with vinyl tape
Indoor unit tubing
Flare nut
Pipings
Torque wrench
Indoor unit tubing
Spanner (fixed)
Connection pipe
Flare nut
Vinyl tape
Adhesive
Drain hose
Indoor unit drain hose
(narrow)
When extending the drain hose at the indoor
unit, install the drain pipe.
unit, install the drain pipe.
Wrap the area which accommodates the rear piping housing
section with vinyl tape.
section with vinyl tape.
18K, 24K, 26K
1/2"[5.5kg.m]
1/4"[1.8kg.m]
5/8"[6.6kg.m]
3/8"[4.2kg.m]
Pipe Size[Torque]
Capacity
(Btu/h)
GAS
LIQUID
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