LG LS-K1863HL_HM_HN / LS-K1864HL_HM_HN_BL_EL / LS-K1867HL_HM_HN / LS-K2423HL_HM_HN / LS-K2424HL_HM_HN / LS-K2465HL_HM_HN / LS-K2466HL_HM_HN_BL_EL / LS-K2665HL_HM_HN / LS-K2666HL_HM_HN_BL_EL / LS-K2669HL_HM_HN Service Manual ▷ View online
- 35 -
1. Check that all tubing and wiring have been prop-
erly connected.
2. Check that the gas and liquid side service valves
are fully open.
1. Prepare remote control
Remove the battery cover
by pulling it according to the
by pulling it according to the
arrow direction.
Insert new batteries making
sure that the (+) and (–) of
battery are installed correctly.
Reattach the cover by
sure that the (+) and (–) of
battery are installed correctly.
Reattach the cover by
pushing it back into position.
NOTE:
• Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
• Remove the batteries from the remote control if
the system is not going to be used for a long time.
2. Settlement of outdoor unit
■
Anchor the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a concrete
or rigid mount.
nut(ø10mm) tightly and horizontally on a concrete
or rigid mount.
■
When installing on the wall, roof or rooftop,
anchor the mounting base securely with a nail or
wire assuming the influence of wind and earth-
quake.
anchor the mounting base securely with a nail or
wire assuming the influence of wind and earth-
quake.
■
In the case when the vibration of the unit is con-
veyed to the hose, secure the unit with an
anti-vibration rubber.
veyed to the hose, secure the unit with an
anti-vibration rubber.
3. Evaluation of the performance
Operate unit for 15~20 minutes, then check the sys-
tem refrigerant charge:
tem refrigerant charge:
1. Measure the pressure of the gas side service
valve.
2. Measure the temperature of the intake and dis-
charge of air.
NOTE: If the actual pressure are higher than shown,
the system is most likely over-charged, and
charge should be removed. If the actual pres-
sure are lower than shown, the system is most
likely undercharged, and charge should be
added.
charge should be removed. If the actual pres-
sure are lower than shown, the system is most
likely undercharged, and charge should be
added.
The air conditioner is now ready for use.
Bolt
Tubing connection
Outside ambient TEMP The pressure of the gas side service valve
35°C(95°F)
4.5~5.5kg/cm
2
G(63.9~78.1 P.S.I.G.)
This is performed when the unit is to be relocated
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant in the out-
door unit without loss in refrigerant gas.
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant in the out-
door unit without loss in refrigerant gas.
CAUTION:
Be sure to perform Pump Down procedure with the
unit cooling mode.
Be sure to perform Pump Down procedure with the
unit cooling mode.
Pump Down Procedure
1. Connect a low-pressure gauge manifold hose to the
1. Connect a low-pressure gauge manifold hose to the
charge port on the gas side service valve.
2. Open the gas side service valve halfway and purge the
air from the manifold hose using the refrigerant gas.
3. Close the liquid side service valve(all the way in).
4. Turn on the unit's operating switch and start the cool-
4. Turn on the unit's operating switch and start the cool-
ing operation.
5. When the low-pressure gauge reading becomes 1 to
0.5kg/cm2 G(14.2 to 7.1 P.S.I.G.), fully close the gas
side valve stem and then quickly turn off the unit. At
that time, Pump Down has been completed and all
refrigerant gas will have been collected in the outdoor
unit.
side valve stem and then quickly turn off the unit. At
that time, Pump Down has been completed and all
refrigerant gas will have been collected in the outdoor
unit.
PUMP DOWN
3. Ensure the difference between the intake temper-
ature and the discharge is more than 8°C
(Cooling) or reversely (Heating).
(Cooling) or reversely (Heating).
4. For reference; the gas side pressure of optimum
condition is as below.(Cooling)
Discharge
temperature
temperature
Discharge air
Intake temperature
- 24 -
3) How to fix installation plate
The wall you select should be strong and solid enough to prevent
vibration
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.
wall, use anchor bolts.
Mount the installation plate horizontally by align-
ing the centerline using a level.
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 con-
nections must be done safely.
of the installation plate-routing of the wiring to
power outlets is through the walls typically.
Drilling the hole through the wall for piping con-
nections must be done safely.
5-7mm
(0.2~0.3")
Indoor
WALL
Outdoor
Installation Plate
Marking-off line
Thread
Weight
Type "A" screw
"D"
"C"
Right rear piping
Left rear piping
Hole center
ø70mm
4) Drill a hole in the wall
■
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.
Drill the piping hole at either the right or the left
with the hole slightly slanted to the outdoor side.
- 25 -
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.
chased locally.
■
Measure the distance between the indoor and the
outdoor unit.
outdoor unit.
■
Cut the pipes a little longer than measured dis-
tance.
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.
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.
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 outdoor
unit, then put them on pipe/tube having complet-
ed burr removal.
(not possible to put them on after flaring work)
unit, then put them on pipe/tube having complet-
ed 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.
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
- 26 -
2) Connection of piping-Indoor
■
Preparing the indoor unit's piping and drain hose
for installation through the wall.
for installation through the wall.
■
Remove the plastic tubing retainer(see illustra-
tion below) and pull the tubing and drain hose
away from chassis.
tion below) and pull the tubing and drain hose
away from chassis.
■
Replace the plastic tubing holder in the original
position.
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 mov-
ing it left and right.
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 mov-
ing 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
unit.
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.
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