LG AM07BP.NSJ User manual

21
ENGLISH
ances or devices, it must be a dedicated power source for this
appliance.
• Do not modify or extend the power cable.
• Ensure the power cable is secure so that it does not come out
while the appliance is operating.
• Do not touch the power plug or the appliance controls with
wet hands.
• Cut the power during a severe thunderstorm or lightening or
when not in use for a long period of time.
• Do not grab the power cable when removing the plug, but
rather hold the power plug tightly.
• Do not bend the power cable excessively or place a heavy ob-
ject on it.
• Do not turn on the circuit breaker or power when covers are
removed or opened.
• Make sure that the pipe and the power cable connecting the
indoor and outdoor units are not pulled too tight when in-
stalling the appliance.
•
Install dedicated electric outlet and circuit breaker for the appli-
ance.
• Make sure to close the cover of the control box after connect-
ing the wiring to the appliance.
• Loose connections may cause electrical sparks, injury, and
death.
• Do not install the appliance in a place where flammable liquids
or gases such as gasoline, propane, paint thinner, etc., are
stored.
• Only use the refrigerant designated on the label, do not put
any foreign substances into the appliance.
• Any person who is involved with working on or breaking into a
refrigerant circuit should hold a current valid certificate from an
This symbol indicates that this appliance uses a flam-
mable refrigerant. If the refrigerant is leaked and expo-
sure to an external ignition source, there is a risk of fire.
This symbol indicates that the Operation Manual
should be read carefully.
This symbol indicates that a service personnel should
be handling this equipment with reference to the Instal-
lation Manual.
This symbol indicates that information is available such
as the Operating Manual or Installation Manual.
IMPORTANT SAFETY INSTRUCTIONS
WARNING
To reduce the risk of explosion, fire, death, electric shock, injury
or scalding to persons when using this product, follow basic pre-
cautions, including the following:
• The information contained in the manual is intended for use by
a qualified service technician who is familiar with the safety
procedures and equipped with the proper tools and test instru-
ments.
• The appliance shall be installed in accordance with national
wiring regulations.
• Compliance with national gas regulations shall be observed.
• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.
• If the supply cord is damaged, it must be replaced by the man-
ufacturer or its service agents or similarly qualified person in
order to avoid a hazard.
• Appliance shall be disconnected from its power source during
!
service and when replacing parts.
• Failure to read and follow all instructions in this manual can re-
sult in equipment malfunction, property damage, personal in-
jury and/or death.
• Check that the appliance’s voltage level is 90 % or higher than
the rated voltage. To check it, refer to the label attached to the
side of the appliance.
• Do not install the appliance on an unstable surface or in a
place where there is danger of it falling.
• This appliance must be grounded. In the event of malfunction
or breakdown, grounding will reduce the risk of electric shock
by providing a path of least resistance for electric current.
• Improper connection of the equipment-grounding conductor
can result in risk of electric shock. Check with a qualified elec-
trician or service personnel if you are in doubt as to whether
the appliance is properly grounded.
• If the power supply cable is damaged or the cable connection
is loose, do not use the power supply cable and contact an au-
thorized service center.
• Do not connect the ground wire to a gas pipe, a lightning rod,
or a telephone ground wire.
• Do not share the power supply for this unit with other appli-
The following symbols are displayed on indoor and outdoor
units. (for R32)
INSTALLATION MANUAL AIR CONDITIONER
TYPE : WALL MOUNTED
Original instruction MFL67713839
Rev.04_032321
Copyright © 2016 - 2021 LG Electronics Inc. All Rights Reserved.
SAFETY INSTRUCTIONS
The following safety guidelines are intended to prevent
unforeseen risks or damage from unsafe or incorrect operation of
the appliance. The guidelines are separated into ‘WARNING’ and
‘CAUTION’ as described below.
WARNING
This indicates that the failure to follow the instructions can
cause serious injury or death.
CAUTION
This indicates that the failure to follow the instructions can
cause the minor injury or damage to the product.
!
!
This symbol is displayed to indicate matters and
operations that can cause risk. Read the part with this
symbol carefully and follow the instructions in order to
avoid risk.
!

3 4
industry-accredited assessment authority regard of flammable
refrigerants, which authorizes their competence to handle re-
frigerants safely in accordance with an industry recognized as-
sessment specification.
• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring the
assistance of other skilled personnel shall be carried out under
the supervision of the person competent in the use of flamma-
ble refrigerants.
• Keep any required ventilation openings clear of obstruction.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• Flexible refrigerant connectors (such as connecting lines be-
tween the indoor and outdoor unit) that may be displaced dur-
ing normal operations shall be protected against mechanical
damage.
• Mechanical connections shall be accessible for maintenance
purposes.
• A brazed, welded, or mechanical connection shall be made be-
fore opening the valves to permit refrigerant to flow between
the refrigerating system parts.
• Use non-flammable gas (nitrogen) to check for leak and to
purge air.
• Use only refrigerant grade pipe specific for R32 refrigerant. Do
Not Use R22 products, which have lower pressure ratings and
can result in excessive pressure, explosion and injury.
• Inert gas (oxygen free nitrogen) should be used when you
checking for leaks, cleaning or repairs of pipes etc. If you are
using combustible gases including oxygen, appliance may
have the risk of fires and explosions.
• Do not discharge the refrigerant into the atmosphere.
• If refrigerant leaks, ventilate the room.
• Always check for gas (refrigerant) leakage after installation or
repair of appliance.
• Be cautious not to get injured by the sharp edges while in-
stalling the appliance or taking it out of its packaging.
• Ensure that you carry by the chassis when you lift the unit.
• This appliance should only be transported by two or more peo-
ple holding the appliance securely.
• Safely dispose of packing materials such as screws, nails or
batteries using proper packaging after installation or repair.
• To avoid nitrogen entering the refrigerant system in a liquid
state, the top of the cylinder must be higher than its bottom
when you pressurize the system.
• The tubing shall be protected to the extent that it will not be
handled or used for carrying during moving of the appliance.
• Ventilation system have to be installed in the space when ap-
pliance with R32 is using for cooling of electric equipment.
• Do not use the appliance for special purposes, such as pre-
serving foods, works of art, and etc. It is an appliance for con-
sumer purposes, not a precision refrigerant system. There is
risk of damage or loss of property.
• Do not install the unit in potentially explosive atmospheres.
Refrigerant (for R32 Only)
WARNING
• The appliance shall be stored in a well-ventilated area where
the room size corresponds to the room area as specified for
operation.
!
• The appliance shall be stored in a room without continuously
operating open flames (for example an operating gas appli-
ance) and ignition sources (for example an operating electric
heater).
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• Do not pierce or burn.
• Be aware that refrigerants may not contain an odour.
• Pipe-work shall be protected from physical damage and shall
not be installed in an unventilated space, if that space is
smaller than the minimum floor area.
Minimum Floor Area
• m: Total refrigerant amount in the system
• Total refrigerant amount: Factory refrigerant charge +
Additional refrigerant amount
• Do not use copper pipes which are deformed. Otherwise, the
expansion valve or capillary tube may become blocked with
contaminants.
• Ducts connected to an appliance shall not contain an ignition
source.
• The installation of pipe-work shall be kept to a minimum.
•
When installing or relocating the appliance, consult with a quali-
fied technician to set up the appliance. The appliance should not
be installed by someone without proper qualifications.
• Operating the appliance while it is disconnected to the pipe
could result in explosion and damage. Use the appliance after
connecting it to the pipe once the appliance has been relo-
cated and the refrigerant circuit repaired.
• Do not place a heater or other heating appliances near the
power cable.
CAUTION
To reduce the risk of minor injury to persons, malfunction, or
damage to the product or property when using this product, fol-
low basic precautions, including the following:
• Install at places where it can endure the weight and
vibration/noise of the outdoor unit.
• Install the appliance in a place where the noise from the out-
door unit or the exhaust air will not inconvenience the neigh-
bors. Failure to do so may result in conflict with the neighbors.
• Ensure the appliance is installed level. Otherwise, it may
cause vibration or water leakage.
• Install the drain hose properly for the smooth drainage of
water condensation.
• Do not touch the leaking refrigerant during installation or re-
pair.
!
m (kg) Minimum Floor Area (m2)
Floor Standing Wall Mounted Ceiling Mounted
< 1.224 - - -
1.224 12.90 1.43 0.956
1.2 12.36 1.37 0.92
1.4 16.82 1.87 1.25
1.6 21.97 2.44 1.63
1.8 27.80 3.09 2.07
2.0 34.32 3.81 2.55
2.2 41.53 4.61 3.09
2.4 49.42 5.49 3.68

Features
INTRODUCTION
Air Intake Vents
Connecting
Wires
Piping
Air Outlet Vents
Base Plate
Drain Hose
Front grille
Air filter
On/Off button
Signal receiver
Display
Plasmaster Ionizer
Air deflector
(Vertical louver & Horizontal vane)
Air outlet
* The feature can be changed according to type of model.
NOTE
• When mechanical connectors are reused indoors, sealing parts shall be renewed.
INSTALLATION MAP
Connecting cable
(Optional Parts)
Vinyl tape (Wide)
• Apply after carrying out a
drainage test.
• To carry out the drainage
test, remove the air filters
and pour water into the heat
exchanger.
Saddle
Gas side piping (Optional Parts)
Liquid side piping (Optional Parts)
Additional drain pipe
Vinyl tape (Narrow)
Drain hose
Installation plate
Sleeve
Bushing-Sleeve
Putty(Gum Type Sealant)
Bend the pipe as closely
on the wall as possible,
but be careful that it
doesn't break.
• You should purchase the installation parts. (lt can be changed according to market)
• Pipes and wires should be purchased separately for installation of the product.
* The feature can be changed according a type of model.
* Work to the vinyl tape should up from below.
NOTE
INSTALLATION TOOLS
INSTALLATION PARTS
Name Quantity Shape
Installation plate 1 EA
Cloth tape
Connector
1 EA
Type "A" screw
5 EA
Type "B" screw
2 EA
Type "C" screw
2 EA
Remote control
holder
1 EA
1 EA (5.0 kW)
2 EA (6.6 kW)
The feature can be changed according to type of model.
Type “B” screw
5.0 kW : ڸØ9.52 (3/8) ơØ12.7 (1/2)
6.6 kW : ڸØ9.52 (3/8) ơØ12.7 (1/2)
ڹØ15.88 (5/8) ơØ12.7 (1/2)
Screws for fixing panels are attached to decoration panel.
When Indoor unit (5.0/6.6 kW) is connected to the Multi Outdoor unit, use the connector.
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
Name
Select the best Location
- There should not be any heat or steam near
the unit.
- Select a place where there are no obstacles
around of the unit.
- Make sure that condensation drainage can
be conveniently routed away.
- Do not install near a doorway.
- Ensure that the interval between a wall and
the left (or right) of the unit is more than
100mm. The unit should be installed as high
as possible on the wall, allowing a minimum
of 200 mm from ceiling.
- Use a metal detector to locate studs to pre-
vent unnecessary damage to the wall.
* UV-C Model Only
* The feature can be changed according to
type of model.
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 300 mm. The space in
front of the unit should be more than 700 mm
of space.
- Do not place animals and plants in the path of
the warm air.
- Take the weight of the air conditioner into
account and select a place where noise and
vibration are minimum.
- Select a place where the warm air and noise
from the air conditioner do not disturb
neighbors.
A
C
B B
INSTALLATION
More than
300
More than
300
Sunroof
Fence or
obstacles
More than
700
More than
600
(Unit : mm)
The gap between the indoor unit and ceil-
ing is needed more than 200 mm for dis-
assemble the air filter.
NOTE
- Do not use nails and/or screws to attach
indoor units to sheetrock, drywall,
plasterboard, tile, plywood, or similar
material types without proper anchors.
Indoor units must be securely, and properly
mounted and anchored or damage and/or
injury may result from improper installation.
Anchor
Anchor Screw
mm mm
6 x 30 4 x 50
Type A B C*
Wall mounted 200 100 1 800
(Unit : mm)
- The feature can be changed according to
type of model.
65

Fixing Installation Plate
The wall you select should be strong and solid
enough to prevent vibration
1Mount the installation plate on the wall with type
"A" screws. If mounting the unit on a concrete
wall, use anchor bolts.
- Mount the installation plate horizontally by
aligning the centerline using Horizontal meter.
2Measure the wall and mark the centerline.
It is also important to use caution concern-
ing 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.
Drill a Hole in the Wall
- Drill the piping hole with a ø65mm hole core
drill. Drill the piping hole at either the right or
the left with the hole slightly slanted to the
outdoor side.
Flaring Work
Main cause for gas leakage is due to defect of
flaring work. Carry out correct flaring work in
the following procedure.
Cut the pipes and the cable
1Use the piping kit accessory or the pipes
purchased locally.
2Measure the distance between the indoor
and the outdoor unit.
3Cut the pipes a little longer than measured
distance.
4Cut the cable 1.5 m longer than the pipe
length.
5-7 mm
(3/16"~5/16")
Indoor
WALL
Outdoor
Copper
pipe
90°
Slanted Uneven Rough
• Use the deoxidised copper as piping
materials to install.
NOTE
C Type: 494 C Type: 504
Place a level on raised tab
Place a level on raised tab
Unit Outline
Unit Outline
83
C Type: 134
Measuring Tape
Ø65
83
Ø65
134
178
Measuring Tape
Hanger
Ø65
76
113
Ø65
C Type: 150
194152
Ø65
Right rear piping
Right rear piping
Right rear piping
Left rear piping
Left rear piping
Left rear piping
(Unit : mm)
Ø65
C Type : 134C Type : 98
C Type
C Type : 418 C Type : 418
Place a level on raised tab
Unit Outline
Installation Plate
407 397
3Pull back the tubing holder.
4Remove pipe port cover and positioning
the tubing
* The feature can be changed according to
type of model.
1Insert 4 hooks of the chassis cover into
gap of the chassis certainly.
2Push the 6 point hook to assemble chassis
cover. Push the chassis cover ①→②.
Assembly of chassis cover
Right
Indoor unit back side view Tubing holder
Left
Backwards
- Press on the tubing cover and unfold the
tubing to downward slowly. And then bend
to the left side slowly.
* The feature can be changed according to
type of model.
- Following bending case from right to left
directly may cause damage to the tubing.
* The feature can be changed according to
type of model.
Good case
Bad case
To protect the chassis cover bended,
assembly chassis cover correctly. Installation Information. For right piping.
Follow the instruction above.
NOTE NOTE
Burrs removal
1 Completely remove all burrs from the cut
cross section of pipe/tube.
2 While removing burrs put the end of the
copper tube/pipe in a downward direction
while removing burrs location is also
changed 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 finishing
flare work)
Flaring work
1Firmly hold copper pipe in a bar with the
dimension shown in below table.
2Carry out flaring work with the flaring tool.
Check
1Compare the flared work with the figure
by.
2If a flared section is defective, cut it off
and do flaring work again.
Connecting the Piping
1Pull the cover at the bottom of the indoor
unit. Pull the cover ①→②.
2Remove the cover from the indoor unit.
Pipe
Reamer
Point down
Flare nut
Copper tube
• Temper grade of pipe: Annealed.
• When flared joints are reused indoors,
the flare part shall be re-fabricated.
NOTE
NOTE
Pipe diameter
Inch (mm)
A inch (mm)
Wing nut type Clutch type
Ø 1/4 (Ø 6.35) 0.04~0.05(1.1~1.3)
0~0.02
(0~0.5)
Ø 3/8 (Ø 9.52) 0.06~0.07(1.5~1.7)
Ø 1/2 (Ø 12.7) 0.06~0.07(1.6~1.8)
Ø 5/8 (Ø 15.88) 0.06~0.07(1.6~1.8)
Ø 3/4 (Ø 19.05) 0.07~0.08(1.9~2.1)
Bar
Copper pipe
"A"
<Wing nut type>
<Clutch type>
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Installation of Indoor Unit
1Hook the indoor unit onto the upper por-
tion of the installation plate.( engage the
three hooks at the 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
2Unlock the tubing holder from the chassis
and mount between the chassis and instal-
lation plate in order to separate the bottom
side of the indoor unit from the wall.
*
The feature can be changed according to the
type of model.
Piping
1Insert the connecting cable through the
bottom side of indoor unit and connect the
cable (You can see detail contents in
'Connecting the cables' section)
<Left side piping>
View
Terminal block
Connecting cable
Cable retainer
Slide up the metal
plate cover
Installation plate
Tubing Holder
1(L) 2(N) 3(C)
<Left side piping>
<Right side piping>
<Right side piping>
2Secure the cable onto the control board
with the cable retainer.
3Tape the tubing pipe, drain hose and the
connection cable. Be sure that the drain
hose is located at the lowest side of the
bundle. Locating at the upper side can
cause overflow from the drain pan through
the inside of the unit.
View
Terminal block
Connecting cable
Cable retainer
Slide up the metal
plate cover
Drain hose
Connecting pipe
Connecting
cable
Tape
Drain hose
Connecting pipe
Connecting
cable
Tape
Drain hose
1(L) 2(N) 3(C)
7 8

TorqueOutside Diameter
Insulation material
Connecting the installation pipe
and drain hose to the indoor unit.
1Align the center of the pipes and sufficient-
ly tighten the flare nut by hand
* When Indoor unit (6.6 kW) is connected to
the Multi Outdoor unit, use the connector.
2Tighten the flare nut with a wrench
3When needed to extend the drain hose of
indoor unit, assembly the drain pipe as
shown on the drawing
Wrap the insulation material
around the connecting portion.
1Overlap the connection pipe insulation
material and the indoor unit pipe insulation
material. Bind them together with vinyl
tape so that there may be no gap.
2Set the tubing cutting line upward.
Wrap the area which accommodates the
rear piping housing section with vinyl tape.
3For left rear piping, bundle the piping and
drain hose together by wrapping them
cloth tape over the range within which
they fit into the rear piping housing sec-
tion.
* Wrap the piping of the indoor unit that are
visible from the outside with vinyl tape.
Torque wrench
Indoor unit tubing
Spanner
(fixed)
Connection
pipe
Flare nut
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
mm inch kgf.cm N.m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
Indoor unit tubing Flare nut Pipes
Vinyl tape(narrow)
Connection pipe
Connecting cable
Cloth tape Wrap with cloth tape
Indoor unit pipe
Pipe
Wrap with cloth tape
Drain hose
Pipe
Cloth tape
Gas Pipe Liquid Pipe
Cutting Line
Cutting Line
Good Case Bad Case
* Tubing cutting line have to be upward.
Connecting the Cables
Indoor unit
Connect the cable to the indoor unit by con-
necting the wires to the terminals on the con-
trol board individually according to the outdoor
unit connection. (Ensure that the color of the
wires of the outdoor unit and the terminal No.
are the same as those of the indoor unit.)
Insert the connecting cable through the bot-
tom side of indoor unit and connect the cable.
(1) Open the Decor
(2) Unscrew the screw of C/Box
(3) Slide up the Metal Plate Cover
(4) Connect the connecting cable
(5) After complete connect the cables, should
assemble the Metal Plate Cover by screw.
* The feature can be changed according a
type of model.
Decor
Power
Power
connecting cable
connecting cable
Power
connecting cable
1(L) 2(N) 3(C)
The power connecting cable with indoor and
outdoor unit should be selected according to
the following national wiring regulations.
The supply cords of parts of appliances for
outdoor use shall not be lighter than poly-
chloroprene sheathed flexible cord.
(code designation 60245 IEC 57, H05RN-F)
- Connect the wires to the terminals on the
control board individually.
- Secure the cable onto the control board with
the cord clamp.
45±5 mm
GN/YL
20 mm
10±3 mm
45±5 mm
GN/YL
20 mm
10±3 mm
(mm2)
NOMINAL
CROSS
SECTlONAL
AREA
Grade
2.5/3.5 kW 5.0 kW 6.6 kW
1.0 1.5 2.5
(mm2)
NOMINAL
CROSS
SECTlONAL
AREA
Grade
1.5/2.1/2.5/3.5/4.2/5.0/6.6 kW
1.0
- The circuit diagram is a subject to
change without notice.
- The earth wire should be longer than the
common wires.
- When installing, refer to the circuit
diagram on the chassis cover.
- Connect the wires firmly so that they
may not be pulled out easily.
- Connect the wires according to color
codes, referring to the wiring diagram.
NOTE
The power cord connected to unit should
be selected according to the following
national wiring regulations. The supply
cords of parts of appliances for outdoor
use shall not be lighter than
polychloroprene sheathed flexible cord.
(code designation 60245 IEC 57, H05RN-F)
CAUTION
!
Outdoor unit
1 Remove the tubing cover from the unit by
loosening the screw.
• 6.6 kW
• 2.5/3.5/5.0 kW
2 Align the center of the pipings and
sufficiently tighten the flare nut by hand.
* When Indoor unit(5.0/6.6 kW) is connected
to the Multi Outdoor unit, use the connector
shown above.
3 Finally, tighten the flare nut with torque
wrench until the wrench clicks.
- When tightening the flare nut with torque
wrench, ensure the direction for tighten-
ing follows the arrow on the wrench.
* The feature can be changed according a
type of model.
Connector
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Outdoor unit
Outside Diameter Torque
mm inch kgf.cm N.m
Ø6.35 1/4 180~250 17.6~24.5
Ø9.52 3/8 340~420 33.3~41.2
Ø12.7 1/2 550~660 53.9~64.7
Ø15.88 5/8 630~820 61.7~80.4
- Use a recognized circuit breaker between
the power source and the unit.
A disconnecting device to adequately discon-
nect all supply lines must be fitted.
• 6.6 kW
• 5.0 kW
• 2.5/3.5 kW
Cover control
Outdoor Unit
Outdoor Unit
Outdoor Unit
Connecting
cable
1(L) 2(N) 1(L) 2(N) 3(C)
Outdoor Unit
Outdoor Unit
Outdoor Unit
Tubing Cover Power cord
LN 3(C)1(L) 2(N)
Outdoor Unit
Outdoor Unit
Outdoor Unit
Tubing Cover
Power cord
LN 3(C)1(L) 2(N)
Power connecting
cable
Power connecting
cable
Air
Conditioner
Main power source
Circuit breaker
Use a circuit breaker
or time delay fuse.
Circuit
Breaker(A)
Grade
2.5/3.5 kW 5.0 kW 6.6 kW
15 20 25
According to the confirmation of the above
conditions, prepare the wiring as follows.
1Never fail to have an individual power cir-
cuit specifically for the air conditioner. As
for the method of wiring, be guided by
the circuit diagram posted on the inside
of control cover.
2The screw which fasten the wiring in the
casing of electrical fittings are liable to
come loose from vibrations to which the
unit is subjected during the course of
transportation. Check them and make
sure that they are all tightly fastened. (If
they are loose, it could cause burn-out of
the wires.)
3Specification of power source.
4Confirm that electrical capacity is suffi-
cient.
5See that the starting voltage is main-
tained at more than 90 percent of the
rated voltage marked on the name plate.
6Confirm that the cable thickness is as
specified in the power source specifica-
tion. (Particularly note the relation
between cable length and thickness.)
7Always install an earth leakage circuit
breaker in a wet or moist area.
8The following would be caused by voltage
drop.
- Vibration of a magnetic switch, which
will damage the contact point, fuse
breaking, disturbance of the normal
function of the overload.
9The means for disconnection from a
power supply shall be incorporated in the
fixed wiring and have an air gap contact
separation of at least 3 mm in each
active(phase) conductors.
10 Open the terminal cover block before
connecting the indoor side wire.
Use round pressure terminals for connections
to the power terminal block.
Over
5mm
Round pressure
terminal Power wire
Provide the circuit breaker between power
source and the unit as shown by
NOTE
CAUTION
!
* How to enter the installer mode
* How to set the code
109

1Mount the tubing holder in the original
position.
2Ensure that the hooks are properly seated
on the installation plate by moving it left
and right.
3Press the lower left and right sides of the
unit against the installation plate until the
hooks engage into their slots (clicking
sound).
4Finish the assembly by screwing the unit
to the installation plate by using two pieces
of type "C" screws. And assemble a chas-
sis cover.
* The feature can be changed according to
type of model.
Finishing the indoor unit
installation
Type 'C' screw
Checking the Drainage
1Pour a glass of water on the evaporator.
2Ensure the water flows through the drain
hose of the indoor unit without any leak-
age and goes out the drain exit.
* The feature can be changed according to
type of model.
1The drain hose should point downward for
easy drain flow.
Drain piping
Downward slope
Drain pan
Drain
hose
Leakage
checking
Connecting area
drain hose
Leakage
checking
To check the drainage.
CAUTION
!
The indoor unit can be dropped from the
wall, the indoor unit is not screwed
correct position on the install plate.
To avoid the gap between the indoor unit
and wall , screw the indoor unit to the
install plate correctly.
To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the cylin-
der must be higher than its bottom when
you pressurize the system. Usually, the cylin-
der is used in a vertical standing position.
Air Purging
The air and moisture remaining in the
refrigerant system have undesirable effects as
indicated below.
1Pressure in the system rises.
2Operating current rises.
3 Cooling(or heating) efficiency drops.
4 Moisture in the refrigerant circuit may
freeze and block capillary tubing.
5 Water may lead to corrosion of parts in the
refrigeration system.
Therefore, after evacuating the system, take a
leak test for the piping and tubing between
the indoor and outdoor unit.
Air purging with vacuum pump
1Preparation
- Check that each tube(both liquid and gas
side tubes) between the indoor and out-
door units have been properly connected
and all wiring for the test run has been
completed. Remove the service valve
caps from both the gas and the liquid side
on the outdoor unit. Note that both the
liquid and the gas side service valves on
the outdoor unit are kept closed at this
stage.
2 Leak test
- Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to
this service port with charge hoses.
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
- Do a leak test of all joints of the tubing(both
indoor and outdoor) and both gas and liquid
side service valves. Bubbles indicate a leak.
Be sure to wipe off the soap with a clean
cloth.
- After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is
reduced to normal, disconnect the hose from
the cylinder.
There is a risk of fire and explosion.
Inert gas (nitrogen) should be used
when you check plumbing leaks, cleaning
or repairs of pipes etc. If you are using
combustible gases including oxygen,
product may have the risk of fires and
explosions.
Be sure to use a manifold valve for air purg-
ing. If it is not available, use a stop valve for
this purpose. The knob of the 3-way valve
must always be kept close.
- Pressurize the system to maximum
17.6 kg/cm2G (R22 model) or 28.1 kg/cm2G
(R410A model) with dry nitrogen gas and
close the cylinder valve when the gauge
reading reaches 17.6 kg/cm2G (R22 model)
or 28.1 kg/cm2G (R410A model). Next step
is leak test with liquid soap.
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
NOTE
CAUTION
!
WARNING
!
2Do not make drain piping like the
following.
* The feature can be changed according to
type of model.
Installing drain piping of the
outdoor unit
Depending on installation site, it may be
required to install drain plug for drainage
(Supplied with the unit). In cold areas, do not
use a drain hose with the outdoor unit.
Otherwise, drain water may freeze, impairing
the heating performance.
1See the figure below for installation of the
drain plug.
A Drain nipple
B Drain cap
C Drain washer
2 Connect a field supplied vinyl hose to the
drain nipple (A). If the hose is too long and
hangs down, fix it carefully to prevent kinks.
* The feature can be changed according to
type of model.
Do not raise
Water
leakage
Tip of drain hose
dipped in water
Water
leakage Ditch
Less than
50mm gap
Accumulated
drain water
Air
Waving
Water
leakage
B
A
C
• 6.6 kW
• 2.5/3.5/5.0 kW
Forming the Piping
Form the piping by wrapping the connecting
portion of the indoor unit with insulation material
and secure it with two kinds of vinyl tapes.
- If you want to connect an additional drain
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1 Tape the piping, drain hose and connecting
cable from down to up.
2Secure the tapped piping along the exteri-
or wall using saddle or equivalent.
* The feature can be changed according to
type of model.
In cases where the Outdoor unit is installed
above the Indoor unit perform the following.
1 Tape the piping and connecting cable from
down to up.
2Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3Fix the piping onto the wall using saddle or
equivalent.
Drain hose Vinyl tape(narrow)
Pipe
Wrap with
vinyl tape(wide)
Taping
Saddle
Drain hose
Pipings
Connecting cable
Seal a small opening
around the pipings
with gum type sealant.
Trap is required to prevent water
from entering into electrical parts.
- Remove the caps from the 2-way and 3-way
valves.
- Remove the service-port cap from the 3-way
valve.
- Apply a soap water or a liquid neutral deter-
gent on the indoor unit connection or out-
door unit connections by a soft brush to
check for leakage of the connecting points of
the piping.
- If bubbles come out, the pipes have leakage
-
Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit. Confirm
the "Lo" knob of the pressure Gauge is open.
Then, run the vacuum pump. The operation
time for evacuation varies with tubing length
and capacity of the pump. The following table
shows the time required for evacuation.
Soap water method
Evacuation * The feature can be changed according
a type of model.
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
- With a service valve wrench, turn the valve
of liquid side counter-clockwise to fully open
the valve
- Turn the valve of gas side counter-clockwise
to fully open the valve
- Loosen the charge hose connected to the
gas side service port slightly to release the
pressure, then remove the hose.
- Replace the flare nut and its bonnet on the
gas side service port and fasten the flare nut
securely with an adjustable wrench. This
process is very important to prevent leakage
from the system
- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum
pump.
- Replace the pipe cover to the outdoor unit by
one screw. Now the air conditioner is ready
for test run.
Finishing the Job
Gas side
Outdoor unit
Liquid side
Cap
3-way or
2-way valve
3-way valve
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 10 m
(33 ft)
If tubing length is
longer than 10 m
(33 ft)
10 min. or more 15 min. or more
for R32 Only
• Electronic leak detectors shall be used to
detect flammable refrigerants, but the sensi-
tivity may not be adequate, or may need re-
calibration. (Detection equipment shall be cal-
ibrated in a refrigerant-free area.)
• Leak detection equipment shall be set at a
percentage of the LFL (Lower flammable
limit) of the refrigerant and shall be calibrated
to the refrigerant employed and the appropri-
ate percentage of gas (25 % maximum) is
confirmed.
• Leak detection fluids are suitable for use with
most refrigerants but the use of detergents
containing chlorine shall be avoided as the
chlorine may react with the refrigerant and
corrode the copper pipe-work.
• If a leak is suspected, all naked flames shall
be removed/extinguished.
• If a leakage of refrigerant is found which
requires brazing, all of the refrigerant shall be
recovered from the system, or isolated (by
means of shut off valves) in a part of the sys-
tem remote from the leak.
• Oxygen free nitrogen (OFN) shall be purged
through the system both before and during
the brazing process.
NOTE
* How to enter the installer mode
* How to set the code
11 12

Outdoor unit
Manifold valve
Vacuum pump
Pressure
gauge
Open Close
* The feature can be changed according
a type of model.
1Fix the outdoor unit with a bolt and nut
(ø10 mm) tightly and horizontally on a con-
crete or rigid mount.
2When installing on the wall, roof or
rooftop, anchor the mounting base secure-
ly with a nail or wire assuming the influ-
ence of wind and earthquake.
3If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibra-
tion rubber.
Settlement of outdoor unit
Bolt
Tubing connection
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
1Measure the pressure of the gas side serv-
ice valve.
2Measure the air temperature from inlet and
outlet of air conditioner.
3Ensure the difference between the inlet
and outlet temperature is more than 8 °C.
4For reference; the gas side pressure at
optimum condition is shown on table
(cooling)
The air conditioner is now ready to use.
* The feature can be changed according
a type of model.
for R410A
for R32
Evaluation of the performance
Discharge
temperature
Discharge air
Inlet temperature
Outdoor
Temperature
Pressure of Service
Valve (Gas)
35 °C (95 °F) 8.5~9.5 kgf/cm2G
(120~135 psi)
Outdoor
Temperature
Pressure of Service
Valve (Gas)
20 °C (68 °F) ~
35 °C (95 °F)
8.4~9.5 kgf/cm2G
(120~135 psi)
35 °C (95 °F) ~
40 °C (104 °F)
9.5~10.5 kgf/cm2G
(135~150 psi)
40 °C (104 °F) ~
45 °C (113 °F)
10.5~11.6 kgf/cm2G
(150~165 psi)
45 °C (113 °F) ~
48 °C (118 °F)
11.6~12.3 kgf/cm2G
(165~175 psi)
- Connect a low-pressure gauge manifold
hose to the charge port on the gas side serv-
ice valve.
- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.
- Close the liquid side service valve(all the
way).
- Turn on the unit's operating switch and start
the cooling operation.
- When the low-pressure gauge reading
becomes 1 to 0.5 kg/cm2G(14.2 to 7.1
P.S.I.G.), fully close the gas side valve and
then quickly turn off the unit. Now Pump
Down procedure is completed, and all refrig-
erant is collected into the outdoor unit.
Heating Only Mode
Heating Only Mode switching
function setup
1Supply the power to the unit with no func-
tions active.
2Enter the Installer Code and set the code
to 47.
3Press to select the code No.47 then,
check if buzzer beeps.
4Cut the power to the unit.
5Turn back on the power to the unit after 30
seconds.
Heating Only Mode switching
function disable setup
1Supply the power to the unit with no func-
tions active.
2Enter the Installer Code and set the code
to 48.
3Press to select the code No.48 then,
check if buzzer beeps.
4Cut the power to the unit.
5Turn back on the power to the unit after 30
seconds.
* How to enter the installer mode
Press Reset Button and ‘A’ Button ( )
* How to set the code
Set the code you want by pressing TEMP
button ( _) and press .
_10 digit
1 digit
Press SETUP
A
Pump Down Procedure
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
1Remove the battery cover by pulling it
according to the arrow direction.
2Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
3Reattach the cover by pushing it back into
position.
- If you press and hold the On/Off button for
3 – 5 seconds instead of 6 seconds, the unit
will switch to the test operation.
- In the test operation, the unit blows out
strong air for cooling for 18 minutes and then
returns to the factory default settings.
This is performed when the unit is relocated
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant into
the outdoor unit without the loss of refrigerant.
Test operation
Prepare remote controller
Pump Down
It m
may cause explosion or injury.
After pump down, power must be turned
off before removing the pipe. When
operating this product without connecting
the pipe, there will be high pressure
insidce the compressor due to the entry of
air, possibly causing explosion or injury.
Be sure to perform Pump Down procedure
in the cooling mode.
NOTE
NOTE
• Use 2 AAA(1.5 V) batteries. Do not use
rechargeable batteries.
• Remove the batteries from the remote
controller if the system is not used for a
long time
If the actual pressure is higher than
shown, the system is most likely over-
charged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely under-
charged, and charge should be added.
NOTE
WARNING
!
SMART DIAGNOSIS
Diagnosis of operating information
1Enter the Installer Code and set the code
to 57.
2Click the “Receive” button on the main
screen of LG AC Smart Diagnosis App on
your smart phone.
3Press and hold your smart phone close
to the indoor unit.
4Receive the buzzer beeps from indoor unit
with your smart phone.
5The diagnosis of operating information will
be displayed on the screen of your smart
phone.
Diagnosis of error information
1Enter the Installer Code and set the code
to 58.
2Click the “Receive” button on the main
screen of LG AC Smart Diagnosis App on
your smart phone.
3Press and hold your smart phone close
to the indoor unit.
4Receive the buzzer beeps from indoor unit
with your smart phone.
5The diagnosis of operating information will
be displayed on the screen of your smart
phone.
* How to set the code
Set the code you want by pressing TEMP
button ( _) and press .
_10 digit
1 digit
- Once the function is set up, Cooling,
Dehumidification Auto Change over can-
not be used.
- Once the function is disable it will return
to its normal state.
- Code cannot be entered when it is in
operation mode. It must be OFF state to
enter code.
- Even if able to enter code in ON state, it
won’t function if the code is not entered
in OFF state.
- At Heating Only Mode, if the product
gets turned off while the wireless
remote control is set at other than heat-
ing / blowing, the product will not get
turned back on. Turn off the product after
the wireless remote control is set at
heating / blowing and then turn back on.
- Be sure to keep ambient noise to a mini-
mum or the smart phone may not cor-
rectly receive the buzzer beeps from the
indoor unit.
- Initialization of diagnosis data may take
approximately 1 minute after supplying
the AC power .
- The code No. 57 is used for confirming
the diagnosis data which is updated on
while the indoor unit is operating
- The code No. 58 is used for confirming
the diagnosis data which is the occurred
time of Error Code.
* How to enter the installer mode
Press Reset Button and ‘A’ Button ( )
A
Press SETUP
NOTE
NOTE
1413

* How to enter the installer mode
* How to set the code
- Air conditioners should not be installed in
areas where corrosive gases, such as acid
or alkaline gas, are produced.
- Do not install the product where it could be
exposed to sea wind (salty wind) directly. It
can result corrosion on the product.
Corrosion, particularly on the condenser
and evaporator fins, could cause product
malfunction or inefficient performance.
- If outdoor unit is installed close to the sea-
side, it should avoid direct exposure to the
sea wind. Otherwise it needs additional
anticorrosion treatment on the heat
exchanger.
Installation guide at the
seaside
Selecting the location
(Outdoor Unit)
If the outdoor unit is to be installed close to
the seaside, then direct exposure to the sea
wind should be avoided.
Install the outdoor unit on the opposite side of
the sea wind direction.
In case of installing the outdoor unit on the
sea side, setup a windbreak to prevent sea
wind.
- It should be strong enough like concrete to
prevent the sea wind from the sea.
- The height and width should be more than
150% of the outdoor unit.
- Keep more than 70 cm of space between
outdoor unit and the windbreak for easy air
flow.
Select a well-drained place.
Sea wind
Sea wind
- If you can’t meet above guide line in the
seaside installation, please contact LG
Electronics for the additional
anticorrosion treatment.
- Periodic ( more than once/year ) cleaning
of the dust or salt particles stuck on the
heat exchanger by using water
* Do not use seawater when you clean up
the heat exchanger.
Sea wind
Windbreak
CAUTION
!
Manual the decor, air filter Assembly & Disassembly
Disassemble the decor
1 Turn off the power and unplug the power cord.
2Pull the decor at the bottom of the indoor unit.
Assemble the decor
1 Turn off the power and unplug the power cord.
2Insert 3 or 4 hooks of the decor into gap of
the indoor unit certainly.
Disassemble the air filter
1 Turn off the power and unplug the power cord.
2 Hold the knob of the air filter, Lift it up slightly.
3 Remove the decor from the indoor unit.
3Hold the knob of the air filter, lift it up
slightly and remove it from the unit.
3 Push the nooks to assemble the decor.
Assemble the air filter
1 Turn off the power and unplug the power cord.
2 Insert the hooks of the air filter into the
front grille.
3 Push down hooks to assemble the air filter.
4Check side of the front grille for the air filter
assembled correctly.
lf the air filter is not assembled correctly, Dust
and other substance come into the indoor unit.
lf look at the indoor unit from higher than it,
can assemble the air filter easily.
The air filter can be broken when it is
bended.
NOTE
CAUTION
!
* How to set the code
* How to enter the installer mode
Outdoor unit
Indoor unit Outdoor unit
Indoor unit
A
B
A
B
Capacity is based on standard length and maximum allowable length is on the basis of relia-
bility. Additional refrigerant must be charged after 12.5 m (2.5/3.5 kW Model) / 7.5 m (5.0/6.6
kW Model)
Operation ranges
The table below indicates the temperature ranges the air conditioner can be Operated within.
※
During the installation and binding of Multi model, refer to Multi outdoor unit installation manual.
Capacity
(kW)
Pipe Size Standard
Length
(m)
Max.
Length
Ⓐ(m)
Max.
Elevation
Ⓑ(m)
Additional Re-
frigerant (g/m)
GAS LIQUID
mm inch mm inch
2.5/3.5 Ø9.52 3/8 Ø6.35 1/4 7.5 20 10 20
5.0 Ø12.7 1/2 Ø6.35 1/4 7.5 20 10 20
6.6 Ø15.88 5/8 Ø6.35 1/4 7.5 30 15 30
Capacity Mode Indoor temperature Outdoor temperature
2.5/3.5 kW Cooling 18 °C ~ 32 °C -15 °C ~ 48 °C
Heating 16 °C ~ 30 °C -15 °C ~ 24 °C
5.0/6.6 kW Cooling 18 °C ~ 32 °C -15 °C ~ 48 °C
Heating 16 °C ~ 30 °C -10 °C ~ 24 °C
Piping Length and Elevation
Single Split Model
Capacity
(kW)
Pipe Size
GAS LIQUID
mm inch mm inch
1.5/2.1/2.5/3.5/4.2 Ø9.52 3/8 Ø6.35 1/4
5.0/6.6 Ø12.7 1/2 Ø6.35 1/4
Multi Model
CAUTION
!
Precautions about installation in regions with extreme snowfall and cold temper-
atures
To ensure the outdoor unit operates properly, certain measures are required in locations where there
is a possibility of heavy snowfall or severe wind chill or cold :
1Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these
are unusual phenomena.
2Position the outdoor unit so that its airflow fans are not buried by direct, heavy snowfall.
If snow piles up and blocks the airflow, the system may malfunction.
3Remove any snow that has accumulated 100 mm or more on the top of the outdoor unit.
4Place the outdoor unit on a raised platform at least 500 mm higher than the aver- age annual snow-
fall for the area. If the frame width is wider than the outdoor unit, snow may accumulate.
5Install a snow protection hood.
6To prevent snow and heavy rain from entering the outdoor unit, install the suction and dis- charge
ducts facing away from direct winds.
7Additionally, the following conditions should be taken into consideration when the unit operates in
defrost mode:
- If the outdoor unit is installed in a highly humid environment (near an ocean, lake, etc.), en- sure
that the site is well-ventilated and has a lot of natural light. (Example: Install on a rooftop.)
TIPS FOR SAVING ENERGY
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
• Do not cool excessively indoors. This may be harmful for your health and may consume more electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air conditioner is used
for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the air flow or
weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
15 16