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• 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 condition-
er 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 :
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:
TIPS FOR SAVING ENERGY
• Use caution when unpacking and installing.
- Sharp edges may cause injury.
• Thickness of copper pipes used are as shown “Flaring work” Table.
- Never use copper pipes thinner than that in the table even when it is available on the market
• Do not use copper pipes having a collapsed.
- Otherwise, the expansion valve or capillary tube may become blocked with contaminants.
• For R410A model, use piping, flare nut and tools which is specified for R410A refrigerant.
- Using of (R22) piping, flare nut and tools may cause abnormally high pressure in the refrigerant
cycle (piping), and possibly result in explosion and injury.
• It is desirable that the amount of residual oil less than 40 mg/10m.
• If air enters the refrigerant system, an excessively high pressure results, causing equipment dam-
age or injury.
• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant lev-
els may cause failure of product.
• Ensure that you grab the chassis when you lift the unit.
- If you lift the unit with the panel held, it may result in serious injury or product failure.
• Do not turn on the breaker or power under condition that front panel, cabinet, top cover, control box
cover are removed or opened.
- Otherwise, it may cause fire, electric shock, explosion or death.
• Make the connections securely so that the outside force of the cable may not be applied to the ter-
minals.
- Inadequate connection and fastening may generate heat and cause a fire.
• 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 inside the
compressor due to the entry of air, possibly causing explosion or injury.
• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant
concentration from exceeding the safety limit when the refrigerant leaks.
- Consult the dealer regarding the appropriate measures to prevent the safety limit from being
exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to
lack of oxygen in the room could result.
• Use a vacuum pump or inert (nitrogen) gas when doing leakage test or air purge. Do not compress
air or oxygen and do not use flammable gases.
- Otherwise, it may cause fire or explosion. There is the risk of death, injury, fire or explosion.
Operation
• Do not share the outlet with other appliances.
- It will cause an electric shock or a fire due to heat generation.
• Do not use the damaged power cord.
- Otherwise, it may cause a fire or electrical shock.
• Do not modify or extend the power cable.
- Scratches or peeling insulation on the power cables may result in fire or electric shock, and should
be replaced.
Symbols used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that may cause harm to the air conditioner.
This symbol indicates special notes.
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
Air deflector
(Vertical louver & Horizontal vane)
Air outlet
* The feature can be changed according to type of model.
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.
NOTE
!
• You should purchase the installation parts. (lt can be changed according to market)
* The feature can be changed according a type of model.
* Work to the vinyl tape should up from below.
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product.
WARNING
It can result in serious injury or death when the directions are ignored.
CAUTION
It can result in minor injury or product damage when the directions are ignored.
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• Air conditioner Shall be installed in accordance with national wiring regulations.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
• The information contained in the manual is intended for use by a qualified service technician familiar
with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment malfunc-
tion, property damage, personal injury and/or death.
• When the power cord is to be replaced, replacement work shall be performed by authorized person-
nel only using only genuine replacement parts.
• Air conditioner shall be disconnected from its power source during service and when replacing
parts.
• Installation MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code NFPA 70/ANSI C1-1003 or current edition and Canadian Electrical Code
Part1 CSA C.22.1.
Installation
• Always perform grounding.
- Otherwise, it may cause electrical shock.
• Don’t use a power cord, a plug or a loose socket which is damaged.
- Otherwise, it may cause a fire or electrical shock.
• For installation of the product, always contact the service center or a professional installation
agency.
- Otherwise, it may cause a fire, electrical shock, explosion or injury.
• Securely attach the electrical part cover to the indoor unit and the service panel to the outdoor unit.
- If the electrical part cover of the indoor unit and the service panel of the outdoor unit are not
attached securely, it could result in a fire or electric shock due to dust, water, etc.
• Always install an air leakage breaker and a dedicated switching board.
- No installation may cause a fire and electrical shock.
• Do not keep or use flammable gases or combustibles near the air conditioner.
- Otherwise, it may cause a fire or the failure of product.
• Ensure that an installation frame of the outdoor unit is not damaged due to use for a long time.
- It may cause injury or an accident.
• Do not disassemble or repair the product randomly.
- It will cause a fire or electrical shock.
• Do not install the product at a place that there is concern of falling down.
- Otherwise, it may result in personal injury.
!
!
!
• Take care so that the power cord may not be pulled during operation.
- Otherwise, it may cause a fire or electrical shock.
• Unplug the unit if strange sounds, smell, or smoke comes from it.
- Otherwise, it may cause electrical shock or a fire.
• Keep the flames away.
- Otherwise, it may cause a fire.
• Take the power plug out if necessary, holding the head of the plug and do not touch it with wet
hands.
- Otherwise, it may cause a fire or electrical shock.
• Do not use the power cord near the heating tools.
- Otherwise, it may cause a fire and electrical shock.
• Do not open the suction inlet of the indoor/outdoor unit during operation.
- Otherwise, it may electrical shock and failure.
• Do not allow water to run into electrical parts.
- Otherwise, it may cause the failure of machine or electrical shock.
• Hold the plug by the head when taking it out.
- It may cause electric shock and damage.
• Never touch the metal parts of the unit when removing the filter.
- They are sharp and may cause injury.
• Do not step on the indoor/outdoor unit and do not put anything on it.
- It may cause an injury through dropping of the unit or falling down.
• Do not place a heavy object on the power cord.
- Otherwise, it may cause a fire or electrical shock.
• When the product is submerged into water, always contact the service center.
- Otherwise, it may cause a fire or electrical shock.
• Take care so that children may not step on the outdoor unit.
- Otherwise, children may be seriously injured due to falling down.
CAUTION
Installation
• Install the drain hose to ensure that drain can be securely done.
- Otherwise, it may cause water leakage.
• Install the product so that the noise or hot wind from the outdoor unit may not cause any damage to
the neighbors.
- Otherwise, it may cause dispute with the neighbors.
• Always inspect gas leakage after the installation and repair of product.
- Otherwise, it may cause the failure of product.
• Keep level parallel in installing the product.
- Otherwise, it may cause vibration or water leakage.
Operation
• Avoid excessive cooling and perform ventilation sometimes.
- Otherwise, it may do harm to your health.
• Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent.
- The appearance of the air conditioner may deteriorate, change color, or develop surface flaws.
• Do not use an appliance for special purposes such as preserving animals vegetables, precision ma-
chine, or art articles.
- Otherwise, it may damage your properties.
• Do not place obstacles around the flow inlet or outlet.
- Otherwise, it may cause the failure of appliance or an accident.
* Features may change according to the type of model.
!
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
Type "D" screw
2 EA
Bracket
1 EA
Remote control
holder
1 EA
3EA (18k,24k)
The feature can be changed according to type of model.
Type “B” screw
18k,24k : ڸ Ø 3/8 in. Ø 1/2 in.→
→ڹ Ø 5/8 in. Ø 1/2 in.
Ø 3/8 in. Ø 1/4 in.ں→
Terminal 1EA
Screws for fixing panels are attached to decoration panel.
When Indoor unit (18/24k) 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 4 in.
The unit should be installed as high as possi-
ble on the wall, allowing a minimum of 8 in.
from ceiling.
- Use a metal detector to locate studs to pre-
vent unnecessary damage to the wall.
* The feature can be changed according to
type of model.
* The feature can be changed according to
type of model.
1Where there are obstacles on both suction
and discharge sides (discharge side
obstacle is lower than the outdoor unit).
2Where there are obstacles above, and on
both suction and discharge sides
(discharge side obstacle is lower than the
outdoor unit).
- Select a place where the warm air and noise
from the air conditioner do not disturb
neighbors.
- Sunroof is recommended for installations that
are exposed to direct sunlight and for
installations in cold climates with heavy snow
which can accumulate on top of outdoor unit.
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 12 in. The space in front of
the unit should be more than 28 in. 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.
More than 8
More than
More than
4
4
(Unit : inch)
INSTALLATION
More than
12
More than
12
Sunroof
Fence or
obstacles
More than
28
More than
24
(Unit : inch)
NOTE
!
The gap between the indoor unit and ceiling is need-
ed more than 8 in. for disassemble the air filter.
NOTE
!
Remove obstructions to prevent blockage
of airflow path.
Outdoor Unit Service Access and
Allowable Clearances
Minimum
27-19/32
Minimum
11-13/16
(Unit : inch)
Minimum
11-13/16
78-3/4
23-19/32
Minimum 27-19/32
(Unit : inch)
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 Ø2-9/16” 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 4.9 ft longer than the pipe
length.
3/16"~5/16"
Indoor
WALL
Outdoor
Copper
pipe
90°
Slanted Uneven Rough
Installation Plate
Installation Plate
Chassis
Hook
Chassis
Hook
Type "A" Screws
Type "A" Screws
C Type: 19.4 C Type: 19.8
Place a level on raised tab
Unit Outline
3.3
C Type: 5.3
Measuring Tape
Ø2-9/16”
3.3
Measuring Tape
Hanger
Ø2-9/16”
C Type: 5.9
(Unit : Inch)
(Unit : Inch)
7.66
Ø2-9/16”
Ø2-
Ø2-
Ø2-
Ø2-9/16”
9/16”
9/16”
9/16”
Ø2-9/16”
Right rear piping
Right rear piping
Left rear piping
Left rear piping
Ø2-9/16”
C Type : 5.3C Type : 3.9
C Type
C Type : 16.5 C Type : 16.5
Place a level on raised tabUnit Outline
Installation Plate
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
NOTE
!
To protect the chassis cover bended,
assembly chassis cover correctly.
NOTE
!
Installation Information. For right piping.
Follow the instruction above.
CAUTION
• Secure the pipe by using the tubing cover.
• Do not strongly press the refrigerant pipes
onto the bottom frame.
• Do not strongly press the refrigerant pipes
on the front grille, either.
!
<Right side piping>
* The feature can be changed according to
type of model.
* The feature can be changed according to
type of model.
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.
Indoor Outdoor
Indoor Unit
Drain hose
Indoor Unit
Drain hose
Insulation
(More than 100~300mm
length and 7mm thickness)
Extension
drain hose
CAUTION
If the extension drain hose is routed
inside the room, insulate the hose with an
insulation material* so that dripping from
sweating (condensation) could not
damage furniture or floors.
• Foamed polyethylene or equivalent is
recommended.
!
CAUTION
Must use the elbow type
(L-Type) conduit
Method:
1. Disassemble bracket
(from indoor unit)
2. Assemble it with conduit
3. Reassemble it with indoor
unit.
!
CAUTION
Insert the drain hose more than 1-15/16”
so it won’t be pulled out of the drain pipe.
!
View Slide up the metal
plate cover
Terminal block
Connecting cable
Cable retainer
1(L1) 2(L2) 3
View
<Right side piping>
Connecting pipe
Connecting
cable
Tape
Drain hose
Tubing cover
Tubing
Cover
Cover
control
Terminal Block
Outside Diameter Torque
Outdoor unit
1 Remove the tubing cover from the unit by
loosening the screw.
<9, 12k>
<18, 24k>
2 Align the center of the pipings and
sufficiently tighten the flare nut by hand.
* When Indoor unit (18/24k) is connected to
the Multi Outdoor unit, use the connector
shown above.
Connector
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.
<9, 12k>
<18, 24k>
* The feature can be changed according a
type of model.
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
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit Outdoor unit
Gas side piping
(Bigger diameter)
Liquid side piping
(Smaller diameter)
Torque wrench
Outdoor unit
Torque wrench
Liquid side piping
(Smaller diameter)
Gas side piping
(Bigger diameter)
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
Pipe diameter
Inch (mm)
A inch (mm)
Wing nut type Clutch type
Ø1/4 (Ø6.35)
0.04~0.07 (1.1~1.8) 0~0.02 (0~0.5)
Ø3/8 (Ø9.52)
Ø1/2 (Ø12.7)
Ø5/8 (Ø15.88)
Inclined
Inside is shiny without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
<Wing nut type>
<Clutch type>
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
*
The feature can be changed according to type of model.
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
1Raise the cover of terminal block.
2Insert the connecting cable through the
bottom side of indoor unit and connect the
cable. (You can see detail contents in
‘Connecting the cables’ section.)
3Secure the cable onto the control board
with the cable retainer.
4Tape 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
Slide up the metal
plate cover
Terminal block
Connecting cable
Cable retainer
Installation plate
Tubing Holder
1(L1) 2(L2) 3
<Left side piping>
* The feature can be changed according to
type of model.
<Left side piping>
Drain hose
Connecting pipe
Connecting
cable
Tape
Drain hose
View
NOTE
!
Insert the drain hose at left side when
you use left side piping type.
Outside Diameter Torque
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 connecting the cables,
should assemble the Metal Plate Cover by
screw.
* The feature can be changed according a
type of model.
Decor
Power
Pow
Pow
Pow
Power
er
er
er
connecting cable
con
con
con
connect
nect
nect
necting
ing
ing
ing cabl
cabl
cabl
cable
e
e
e
Power
connecting cable
1(L1) 2(L2) 3
CAUTION
- 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.
!
CAUTION
- Assemble it with conduit.
!
<9, 12k> <18, 24k>
The power cord connected to the outdoor
unit should be complied with the following
specifications(UL recognized or CSA certified)
CAUTION
!
1 2 3
54 6 7
INSTALLATION MANUAL AIR CONDITIONER
TYPE : WALL MOUNTED
Original instruction
Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved. P/No : MFL67713861
ENGLISH
* All power wiring/communication cables
must comply with applicable local and
national codes.
* Field wiring shall be done such that the cur-
rentcarrying conductors become taut before
the earthing conductor if the cord slips out
of the cord anchorage.
1Remove the front panel (Right) or cover
control from the unit by loosening the
screw. Connect the wires to the terminals
on the control board individually.
2Secure the cable onto the control board
with the cord clamp.
3Refix the front panel(Right) to the original
position with the screw.
4Use a recognized circuit breaker between
the power source and the unit. A discon-
necting device to adequately disconnect all
supply lines must be fitted.
<9, 12k>
<18, 24k>
Circuit
Breaker
(A)
Capacity(Btu/h)
9, 12k 18, 24k
15 25
Outdoor unit
Terminal block
Over 0.2"
Cover control
Conduit panel
Connecting
cable
Power supply
cord
1(L1) 2(L2) 1(L1) 2(L2)
3
CAUTION
• When using the separate wire as the
power cord, please fix the separate wire
into the control box panel by using tie
wrap as the fixture. "A" & "B" are mini-
mum recommended wire size.
• Provide the circuit breaker between
power source and the unit as shown by.
!
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breaker
or time delay fuse.
Over
0.2 in.
Round pressure
terminal
Power wire
(Ground wire)
Round Pressure terminal and connecting
requirement.
Use round pressure terminals for connections
to the power terminal block.
When laying ground wiring, you must use
round pressure terminals.
Outdoor unit
Terminal block
Connecting
cable
Power
supply
cord
Conduit panel
Tubing cover
Over 0.2"
* The feature can be changed according to
type of model.
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
2” gap
Accumulated
drain water
Air
Waving
Water
leakage
B
A
C
<18, 24k>
<9, 12k>
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.
- 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.
* The feature can be changed according
a type of model.
- 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 evacua-
tion.
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
Soap water method
Evacuation
2 Leak test
- Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to
this service port with charge hoses.
CAUTION
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. Usually,
the cylinder is used in a vertical standing
position.
!
WARNING
There is a risk of fire and explo-
sion.
- Inert gas (nitrogen) should be
used when you check plumbing
leaks, cleaning or repairs of pipes etc.
If you are using combustible gases includ-
ing oxygen, product may have the risk of
fires and explosions.
!
CAUTION
Be sure to use a manifold valve for air
purging. 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
250 P.S.I.G. (17.6 kgf/cm 2G) (R22 model)
or 400 P.S.I.G. (28.1 kgf/cm 2G) (R410A
model) with dry nitrogen gas and close
the cylinder valve when the gauge
reading reaches 250 P.S.I.G. (17.6
kgf/cm 2G) (R22 model) or 400 P.S.I.G.
(28.1 kgf/cm 2G) (R410A model). Next
step is leak test with liquid soap.
!
WARNING
It 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 inside the
compressor due to the entry of air, possi-
bly causing explosion or injury.
!
1Fix the outdoor unit with a bolt and nut
(Ø 0.39 in.) tightly and horizontally on a
concrete 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.
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.
3
Ensure the difference between the inlet
and outlet temperature is more than 14.4
˚F.
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.
Settlement of outdoor unit
Evaluation of the performance
Bolt
Tubing connection
Discharge
temperature
Discharge air
Inlet temperature
Refrigerant Outside ambient
TEMP.
The pressure of the
gas side service valve.
R22 95 °F 56.8~71.0 P.S.I.G.
(4~5 kg/cm
2G)
R410A 95 °F 120~135 P.S.I.G.
(8.5~9.5 kg/cm2G)
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.
Prepare remote controller
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
Test operation
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
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.
!
CAUTION
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 0.12 in. in each
active(phase) conductors.
10 Open the terminal cover block before
connecting the indoor side wire.
!
CAUTION
• Before finishing installation of the indoor
unit, seal the hole of a wall except the
pipe’s ways to prevent condensate from
inflow of outdoor air.
!
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.
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.
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
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.
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.
Outdoor unit
Manifold valve
Vacuum pump
Pressure
gauge
Open Close
- 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.
* The feature can be changed according a
type of model.
- 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.
* 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.
Cap
2-way valve
(Close)
Gas side
Liquid side
3-way valve
(Close)
Outdoor unit
Gas side
Liquid side
Cap
2-way valve(Close)
2-way valve(Close)
2-way valve(Close)
2-way valve(Close)
2-way valve(Close)
3-way valve(Close)
3-way valve(Close)
3-way valve(Close)
3-way valve(Close)
3-way valve(Close)
2-way valve(Close)
3-way valve(Close)
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 33 ft
If tubing length is
longer than 33 ft
10 min. or more 15 min. or more
<9, 12k>
<18, 24k>
Finishing the Job
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 refrig-
erant.
- Connect a low-pressure gauge manifold hose
to the charge port on the gas side service
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 14.2
to 7.1 P.S.I.G and then quickly turn off the
unit. Now Pump Down procedure is complet-
ed, and all refrigerant is collected into the
outdoor unit.
Pump Down
Pump Down Procedure
WARNING
!
It may cause explosion or injury.
It may cause explosion or injury.
It may cause explosion or injury.
It may cause explosion or injury. It 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.
NOTE
!
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
!
Be sure to perform Pump Down procedure
in the cooling mode.
C/O(Cooling Only) Mode
1 Supply the power to the unit with no func-
tions active.
2Enter the Installer Code and set the code
to 45.
3Press to select the code No. 45 then,
check if buzzer beeps.
4Cut the power to the unit.
5Turn back on the power to the unit after 30
seconds.
1 Supply the power to the unit with no func-
tions active.
2Enter the Installer Code and set the code
to 43.
3Press to select the code No. 43 then,
check if buzzer beeps.
4Set the code to 46 and press then,
check if buzzer beeps.
5Cut the power to the unit.
6Turn back on the power to the unit after 30
seconds.
* The feature can be changed according
a type of model.
C/O switching function set up
C/O switching function dis-
able set up
* How to enter the installer mode
* How to enter the installer mode
* How to enter the installer mode
* How to enter the installer mode* How to enter the installer mode
Press Reset Button and ‘A’ Button ( )
* How to set the code
* How to set the code
* How to set the code
* How to set the code* How to set the code
Set the code you want by pressing TEMP
button ( _) and press .
A
Press SETUP
_10 digit
1 digit
NOTE
!
- Once the function is set up, heating and
automatic operation cannot 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
- Considering the communication time of the
accessory built on the Air-conditioning, operate
the accessory approximately after 1 min.
-
Entire lock or mode lock cannot be set if heating and
automatic operation is set through central controller
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
A
B
A
B
CAUTION
• Capacity is based on standard length and maximum allowable length is on the basis of reli-
ability.
• Additional refrigerant must be charged after 41 ft (9k, 12k Model) / 24.6 ft (18k, 24k Model)
!
※
During the installation and binding of Multi model, refer to Multi outdoor unit installation manual.
* Refer to Multi outdoor unit installation manual.
Capacity
(Btu/h)
Pipe Size Standard
Length
(ft)
Max.
Length
Ⓐ(ft)
Max.
Elevation
Ⓑ(ft)
Additional Re-
frigerant (oz/ft)
GAS LIQUID
mm inch mm inch
9k / 12k Ø 9.52 3/8 Ø 6.35 1/4 24.6 82 49.2 0.22
18k Ø 15.88 5/8 Ø 9.52 3/8 24.6 114.8 49.2 0.38
24k Ø 15.88 5/8 Ø 9.52 3/8 24.6 114.8 49.2 0.38
Piping Length and Elevation
Single Split Model
Capacity
(Btu/h)
Pipe Size
GAS LIQUID
mm inch mm inch
7k / 9k / 12k / 15k Ø 9.52 3/8 Ø 6.35 1/4
18k / 24k Ø 12.7 1/2 Ø 6.35 1/4
Multi Model
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.
NOTE
!
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.
CAUTION
The air filter can be broken when it is
bended.
!
CAUTION
- 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 2.3 ft of space between out-
door unit and the windbreak for easy air flow.
Select a well-drained place.
Auxiliary heater relay kit
Auxiliary heater relay kit is not available on sin-
gle zone wall mounted models.
Sea wind
Sea wind
Sea wind
Windbreak
NOTE
!
- 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.
Operation ranges
The table below indicates the temperature ranges the air conditioner can be Operated within.
* With wind baffle installed, the minimum temperature will be 0 °F D.B. in cooling.
Check test items
Mode
Mode
Mode
ModeMode Indoor temperature
Indoor temperature
Indoor temperature
Indoor temperatureIndoor temperature Outdoor temperature
Outdoor temperature
Outdoor temperature
Outdoor temperatureOutdoor temperature
Cooling 64 ~ 90 °F 14 [0*] ~ 118 °F
Heating 61 ~ 86 °F -4 ~ 75 °F
Test Items
Test Items
Test Items
Test ItemsTest Items Check
Check
Check
CheckCheck
1 Indoor unit is hooked to the installation plate properly.
2 The gas and liquid service valves are fully opened.
3 There is no refrigerant gas leakage.
4 System is properly grounded.(No electrical leakage)
5 The connection cable is clamped firmly.
6 Indoor unit receives remote control commands and operates properly.
7 Cooling/Heating operation is normal.
8 There is no abnormal sound.
9 There is no water leakage.
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 4 in or more on the top of the outdoor unit.
4Place the outdoor unit on a raised platform at least 20 in higher than the aver- age annual snowfall
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.)
98 10 11
1312 14 15

Produktspecifikationer

Varumärke: LG
Kategori: Inte kategoriserad
Modell: LMN159HVT

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