LG LG3ZMSS536 Installation manual
• 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 damage or injury.
• Always check for gas (refrigerant) leakage after installation or repair of product. Low refrigerant levels 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 terminals.
- 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
!
* The feature can be changed according to type of model.
More than
12
More than
12
Sunroof
Fence or
obstacles
More than
28
More than
24
(Unit : inch)
Minimum
27-19/32
M
inimum
11-13/16
(Unit : inch)
Minimum
1
1-13/16
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
1 Mount 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.
2 Measure the wall and mark the centerline.
It is also important to use caution concerning the location of the installation plate.
Routing of the wiring to power outlets is
through the walls typically. Drilling the hole
through the wall for piping 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
1 Use the piping kit accessory or the pipes
purchased locally.
2 Measure the distance between the indoor
and the outdoor unit.
3 Cut the pipes a little longer than measured
distance.
4 Cut the cable 4.9 ft longer than the pipe
length.
Ø2-9/16”
3 Pull back the tubing holder.
4 Remove pipe port cover and positioning
the tubing
* The feature can be changed according to
type of model.
1 Insert 4 hooks of the chassis cover into
gap of the chassis certainly.
2 Push the 6 point hook to assemble chassis
cover. Push the chassis cover ①→②.
Assembly of chassis cover
- 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.
2 Secure the cable onto the control board
with the cable retainer.
3 Tape 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.
!
Insert the drain
hose to this depth
so it won’t be pulled
out of drain pipe.
1-15/16” or more
Drain Hose
Inner wall
Vinyl chloride
drain pipe
(VP-30)
Outer wall
1(L1) 2(L2) 3
<Right side piping>
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.
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 tightening 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
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
1 Firmly hold copper pipe in a bar with the
dimension shown in below table.
2 Carry out flaring work with the flaring tool.
Check
1 Compare the flared work with the figure
by.
2 If a flared section is defective, cut it off
and do flaring work again.
Connecting the Piping
1 Pull the cover at the bottom of the indoor
unit. Pull the cover ①→②.
2 Remove the cover from the indoor unit.
Pipe
Reamer
Point down
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)
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
<Wing nut type>
<Clutch type>
Installation of Indoor Unit
1 Hook 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.
2 Unlock the tubing holder from the chassis
and mount between the chassis and installation 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
1 Raise the cover of terminal block.
2 Insert the connecting cable through the
bottom side of indoor unit and connect the
cable. (You can see detail contents in
‘Connecting the cables’ section.)
3 Secure the cable onto the control board
with the cable retainer.
4 Tape 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.
1(L1) 2(L2) 3
<Left side piping>
* The feature can be changed according to
type of model.
<Left side piping>
NOTE
!
Insert the drain hose at left side when
you use left side piping type.
Outside Diameter Torque
Connecting the installation pipe
and drain hose to the indoor unit.
1 Align 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.
2 Tighten the flare nut with a wrench
3 When 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.
1 Overlap 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.
2 Set the tubing cutting line upward.
Wrap the area which accommodates the
rear piping housing section with vinyl tape.
3 For 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 section.
* Wrap the piping of the indoor unit that are
visible from the outside with vinyl tape.
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
Vinyl tape(narrow)
Connection pipe
Connecting cable
Cloth tape
Wrap with cloth tape
Indoor unit pipe
Pipe
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 connecting the wires to the terminals on the control 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 bottom 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.
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
!
INSTALLATION MANUAL AIR CONDITIONER
TYPE : WALL MOUNTED
Original instruction
Copyright © 2017 - 2018 LG Electronics Inc. All Rights Reserved.
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 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 :
P/No : MFL67713861
ENGLISH
Air outlet
Air deflector
(Vertical louver & Horizontal vane)
Air Intake Vents
Air Outlet Vents
Air filter
Front grille
Signal receiver
Display
On/Off button
Connecting
Wires
Piping
Drain Hose
Base Plate
INSTALLATION MAP
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.
Vinyl tape (Wide)
• Apply after carrying out a
drainage test.
• To carry out the drainage
Saddle
* The feature can be changed according a type of model.
* Work to the vinyl tape should up from below.
NOTE
!
• You should purchase the installation parts. (lt can be changed according to market)
test, remove the air filters
and pour water into the heat
exchanger.
Gas side piping (Optional Parts)
Liquid side piping (Optional Parts)
Additional drain pipe
Vinyl tape (Narrow)
Drain hose
Connecting cable
(Optional Parts)
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 malfunction, property damage, personal injury and/or death.
• When the power cord is to be replaced, replacement work shall be performed by authorized personnel 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 machine, 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 PARTS
Name
Installation plate
Type "A" screw
Type "B" screw
Type "C" screw
Type "D" screw
Bracket
Remote control
holder
Cloth tape
Connector
Terminal
Screws for fixing panels are attached to decoration panel.
When Indoor unit (18/24k) is connected to the Multi Outdoor unit, use the connector.
Quantity Shape
1 EA
The feature can be changed according to type of model.
5 EA
2 EA
2 EA
2 EA
1 EA
1 EA
1 EA
3EA (18k,24k)
1EA
Type “B” screw
18k,24k : ڸ Ø 3/8 in. → Ø 1/2 in.
ڹ Ø 5/8 in. → Ø 1/2 in.
ں Ø 3/8 in. → Ø 1/4 in.
INSTALLATION TOOLS
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Name
Multi-meter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Level
Flaring tool set
INSTALLATION
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 possible on the wall, allowing a minimum of 8 in.
from ceiling.
- Use a metal detector to locate studs to prevent unnecessary damage to the wall.
More than
4
* The feature can be changed according to
type of model.
NOTE
!
The gap between the indoor unit and ceiling is needed more than 8 in. for disassemble the air filter.
NOTE
!
Remove obstructions to prevent blockage
of airflow path.
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
(Unit : inch)
4
- 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.
* The feature can be changed according to
type of model.
Outdoor Unit Service Access and
Allowable Clearances
1 Where there are obstacles on both suction
and discharge sides (discharge side
obstacle is lower than the outdoor unit).
2 Where there are obstacles above, and on
both suction and discharge sides
(discharge side obstacle is lower than the
outdoor unit).
1 2 3
Installation Plate
Chassis
Hook
Installation Plate
Chassis
Hook
Place a level on raised tab
Unit Outline
C Type : 16.5 C Type : 16.5
Ø2-9/16”
Installation Plate
C Type
Left rear piping
Place a level on raised tab
Unit Outline
C Type: 19.4 C Type: 19.8
Type "A" Screws
Type "A" Screws
C Type : 5.3C Type : 3.9
Ø2-9/16”
Ø2-9/16”
7.66
(Unit : Inch)
Right rear piping
Copper
pipe
Indoor
WALL
90°
Slanted Uneven Rough
Outdoor
3/16"~5/16"
Indoor unit back side view
Right
Tubing holder
Left
Backwards
View
View
Connecting
cable
Slide up the metal
plate cover
Terminal block
Connecting cable
Cable retainer
Tape
Drain hose
Connecting pipe
Ø2-9/16”
Left rear piping
C Type: 5.3
Measuring Tape
3.3
Measuring Tape
Hanger
Flare nut
Copper tube
Ø2-9/16”
3.3
C Type: 5.9
(Unit : Inch)
Right rear piping
Smooth all round
Inside is shiny without scratches
Even length
all round
Inclined
= Improper flaring =
Surface
Cracked Uneven
damaged
thickness
Installation plate
Tubing Holder
View
Drain hose
View
Slide up the metal
plate cover
Terminal block
Tape
Connecting
cable
Drain hose
Connecting pipe
Connecting cable
Cable retainer
Connector
Insulation material
Indoor unit tubing Flare nut Pipes
Spanner
(fixed)
Flare nut
Torque wrench
Indoor unit tubing
Connection
pipe
Decor
Power
Power
connecting cable
connecting cable
Drain pipe
Wrap with cloth tape
Cloth tape
Adhesive
Indoor unit drain hose
Vinyl tape(narrow)
Pipe
Drain hose
54 6 7
* 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.
1 Remove 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.
2 Secure the cable onto the control board
with the cord clamp.
3 Refix the front panel(Right) to the original
position with the screw.
4 Use a recognized circuit breaker between
the power source and the unit. A disconnecting 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 minimum recommended wire size.
• Provide the circuit breaker between
power source and the unit as shown by.
!
Main power source
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.
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
Downward slope
1 Fix the outdoor unit with a bolt and nut
(Ø 0.39 in.) tightly and horizontally on a
concrete or rigid mount.
2 When installing on the wall, roof or
rooftop, anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake.
3 If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibration rubber.
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
1 Measure the pressure of the gas side serv-
ice valve.
2 Measure 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.
4 For 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
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
2
G)
R410A 95 °F
120~135 P.S.I.G.
(8.5~9.5 kg/cm
2
G)
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
1 Remove the battery cover by pulling it
according to the arrow direction.
2 Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
3 Reattach 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
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)
3-way valve(Close)3-way valve(Close)
2-way valve(Close)
3-way valve(Close)
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
A
B
A
B
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 outdoor 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 single 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.
Air
Conditioner
Over
0.2 in.
Circuit Breaker
Use a circuit breaker
or time delay fuse.
Round pressure
terminal
Power wire
(Ground wire)
Checking the Drainage
To check the drainage.
1 Pour a glass of water on the evaporator.
2 Ensure the water flows through the drain
hose of the indoor unit without any leakage and goes out the drain exit.
Connecting area
drain hose
Leakage
checking
Drain pan
Drain
hose
Leakage
checking
* The feature can be changed according to
type of model.
Drain piping
1 The drain hose should point downward for
easy drain flow.
2 Do 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.
1 See 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.
<9, 12k>
<18, 24k>
* The feature can be changed according to
type of model.
A
B
C
2 Leak test
- Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to
this service port with charge hoses.
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
or 400 P.S.I.G. (28.1 kgf/cm
model) with dry nitrogen gas and close
the cylinder valve when the gauge
reading reaches 250 P.S.I.G. (17.6
kgf/cm2G) (R22 model) or 400 P.S.I.G.
(28.1 kgf/cm2G) (R410A model). Next
step is leak test with liquid soap.
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 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.
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, possibly causing explosion or injury.
2
G) (R22 model)
2
G) (R410A
- 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.
Indoor unit
Outdoor unit
* The feature can be changed according
a type of model.
Pressure
gauge
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Manifold valve
Soap water method
- 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 detergent on the indoor unit connection or outdoor 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
Evacuation
- 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.
Bolt
Discharge air
Tubing connection
Inlet temperature
Discharge
temperature
CAUTION
!
According to the confirmation of the above
conditions, prepare the wiring as follows.
1 Never 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.
2 The 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.)
3 Specification of power source.
4 Confirm that electrical capacity is suffi-
cient.
5 See that the starting voltage is main-
tained at more than 90 percent of the
rated voltage marked on the name plate.
6 Confirm that the cable thickness is as
specified in the power source specification. (Particularly note the relation
between cable length and thickness.)
7 Always install an earth leakage circuit
breaker in a wet or moist area.
8 The 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.
9 The 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.
Finishing the indoor unit
installation
1 Mount the tubing holder in the original
position.
2 Ensure that the hooks are properly seated
on the installation plate by moving it left
and right.
3 Press the lower left and right sides of the
unit against the installation plate until the
hooks engage into their slots (clicking
sound).
4 Finish the assembly by screwing the unit
to the installation plate by using two pieces
of type "C" screws. And assemble a chassis cover.
Type 'C' screw
* The feature can be changed according to
type of model.
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
!
• 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.
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.
Saddle
Pipe
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Connecting cable
Pipings
Taping
Drain hose
Drain hose
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.
2 Secure the tapped piping along the exteri-
or wall using saddle or equivalent.
Seal a small opening
around the pipings
with gum type sealant.
Trap is required to prevent water
from entering into electrical parts.
* 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.
2 Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3 Fix the piping onto the wall using saddle or
equivalent.
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
Air Purging
The air and moisture remaining in the
refrigerant system have undesirable effects as
indicated below.
1 Pressure in the system rises.
2 Operating 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
1 Preparation
- Check that each tube(both liquid and gas
side tubes) between the indoor and outdoor 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.
<9, 12k>
<18, 24k>
* The feature can be changed according
a type of model.
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 33 ft
10 min. or more 15 min. or more
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
If tubing length is
longer than 33 ft
Finishing the Job
- 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.
Outdoor unit
Manifold valve
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.
Vacuum pump
NOTE
!
If the actual pressure is higher than
shown, the system is most likely overcharged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely undercharged, and charge should be added.
Pump Down
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.
NOTE
!
Be sure to perform Pump Down procedure
in the cooling mode.
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 insidce the compressor due to
the entry of air, possibly causing explosion
or injury.
Pump Down Procedure
- 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 completed, and all refrigerant is collected into the
outdoor unit.
C/O(Cooling Only) Mode
C/O switching function set up
1 Supply the power to the unit with no func-
tions active.
2 Enter the Installer Code and set the code
to 45.
3 Press to select the code No. 45 then,
check if buzzer beeps.
4 Cut the power to the unit.
5 Turn back on the power to the unit after 30
seconds.
C/O switching function disable set up
1 Supply the power to the unit with no func-
tions active.
2 Enter the Installer Code and set the code
to 43.
3 Press to select the code No. 43 then,
check if buzzer beeps.
4 Set the code to 46 and press then,
check if buzzer beeps.
5 Cut the power to the unit.
6 Turn back on the power to the unit after 30
seconds.
* The feature can be changed according
a type of model.
98 10 11
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
* How to enter the installer mode
Press Reset Button and ‘A’ Button ( )
Press
* How to set the code
Set the code you want by pressing TEMP
_) and press .
button (
_
SETUP
10 digit
1 digit
A
Piping Length and Elevation
Single Split Model
Capacity
(Btu/h)
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
※
During the installation and binding of Multi model, refer to Multi outdoor unit installation manual.
Pipe Size
GAS LIQUID
mm inch mm inch
Standard
Multi Model
Capacity
(Btu/h)
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
CAUTION
!
• Capacity is based on standard length and maximum allowable length is on the basis of reliability.
• Additional refrigerant must be charged after 41 ft (9k, 12k Model) / 24.6 ft (18k, 24k Model)
GAS LIQUID
mm inch mm inch
Length
(ft)
Max.
Length
Ⓐ (ft)
Pipe Size
Max.
Elevation
Ⓑ (ft)
Additional Re-
frigerant (oz/ft)
Manual the decor, air filter Assembly & Disassembly
Disassemble the decor
1 Turn off the power and unplug the power cord.
2 Pull the decor at the bottom of the indoor unit.
3
Remove the decor from the indoor unit.
Assemble the decor
1
Turn off the power and unplug the power cord.
2 Insert 3 or 4 hooks of the decor into gap of
the indoor unit certainly.
3
Push the nooks to assemble the decor.
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 Hold the knob of the air filter, lift it up
slightly and remove it from the unit.
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.
4 Check side of the front grille for the air filter
assembled correctly.
* Refer to Multi outdoor unit installation manual.
CAUTION
!
The air filter can be broken when it is
bended.
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.
Mode Indoor temperature Outdoor temperature
Cooling 64 ~ 90 °F 14 [0*] ~ 118 °F
Heating 61 ~ 86 °F -4 ~ 75 °F
Check test items
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.
Test Items Check
1312 14 15
Precautions about installation in regions with extreme snowfall and cold temperatures
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 :
1 Prepare for severe winter wind chills and heavy snowfall, even in areas of the country where these
are unusual phenomena.
2 Position 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.
3 Remove any snow that has accumulated 4 in or more on the top of the outdoor unit.
4 Place 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.
5 Install a snow protection hood.
6 To prevent snow and heavy rain from entering the outdoor unit, install the suction and dis- charge
ducts facing away from direct winds.
7 Additionally, 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.)
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.
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