Please read this installation manual completely before installing the product.
Installation work must be performed in accordance with the national wiring standards
by authorized personnel only.
Please retain this installation manual for future reference after reading it thoroughly.
Ceiling Cassette
Original instruction
[Representative] LG Electronics Inc. EU Representative : LG Electronics European Shared
Service Center B.V. Krijgsman 1, 1186 DM Amstelveen, The Netherlands
[Manufacturer] LG Electronics Inc. Changwon 2nd factory 84, Wanam-ro, Seongsan-gu,
Changwon-si, Gyeongsangnam-do, KOREA
• Screws for fixing panels are attached to decoration panel.
Washer for
hanging backet
8 EA
Clamp
(Tie Wrap)
4 EA
Air
Intake
Insulation for
fitting
1 SET
for gas pipe
for liquid pipe
Wired Remote Controller
(Accessory)
(Other)
• manual
Installation Manual 3
Page 4
Safety Instructions
Safety Instructions
The following symbols are displayed on indoor and outdoor units.
Read the precautions in
this manual carefully
before operating the unit.
This appliance is filled
with flammable refrigerant
(for R32)
This symbol indicates that
This symbol indicates that
the Operation Manual
should be read carefully.
a service personnel
should be handling this
equipment with reference
to the Installation Manual.
The following safety guidelines are intended to prevent
unforeseen risks or damage from unsafe or incorrect
operation of the appliance.
The guidelines are separated into ‘WARNING’ and
‘CAUTION’ as described below.
This symbol is displayed to indicate matters and
!
operations that can cause risk.
Read the part with this symbol carefully and follow the
instructions in order to avoid risk.
!
WARNING
This indicates that the failure to follow the instructions can
cause serious injury or death.
!
CAUTION
This indicates that the failure to follow the instructions can
cause the minor injury or damage to the product.
!
WARNING
Installation
• Compliance with national gas regulations shall be observed.
• Do not use a defective or underrated circuit breaker. Use
this appliance on a dedicated circuit.
- There is risk of fire or electric shock.
4Indoor Unit
Page 5
Safety Instructions
• For electrical work, contact the dealer, seller, a qualified
electrician, or an Authorized Service Center.
- Do not disassemble or repair the product. There is risk of
fire or electric shock.
• Always ground the product.
- There is risk of fire or electric shock.
• Install the panel and the cover of control box securely.
- There is risk of fire or electric shock.
• Always install a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric
shock.
• Use the correctly rated breaker or fuse.
- There is risk of fire or electric shock.
• Do not modify or extend the power cable.
- There is risk of fire or electric shock.
• Do not install, remove, or re-install the unit by yourself
(customer).
- There is risk of fire, electric shock, explosion, or injury.
• Be cautious when unpacking and installing the product.
- Sharp edges could cause injury. Be especially careful of
the case edges and the fins on the condenser and
evaporator.
• For installation, always contact the dealer or an Authorized
Service Center.
- There is risk of fire, electric shock, explosion, or injury.
• Do not install the product on a defective installation stand.
- It may cause injury, accident, or damage to the product.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it,
causing property damage, product failure, and personal
injury.
• 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.
ENGLISH
Installation Manual 5
Page 6
Safety Instructions
• 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.
• Have all electric work done by a licensed electrician
according to "Electric Facility Engineering Standard" and
"Interior Wire Regulations" and the instructions given in this
manual and always use a special circuit.
- If the power source capacity is inadequate or electric work
is performed improperly, electric shock or fire may result.
• Always intstall a dedicated circuit and breaker.
- Improper wiring or installation may cause fire or electric
shock.
• The appliance shall be stored in a well-ventilated area
where the room size corresponds to the room area as
specified for operation. (for R32)
• The appliance shall be stored in a room without continuously
operating ignition sources (for example: open flames, an
operating gas appliance or an operating electric heater.)
• Keep any required ventilation openings clear of obstruction.
• Mechanical connections shall be accessible for maintenance
purposes.
• To prevent the mixing of different types of refrigerants, be
sure to check the type of refrigerant used in the outdoor unit.
Operation
• Do not let the air conditioner run for a long time when the
humidity is very high and a door or a window is left open.
- Moisture may condense and wet or damage furniture.
• Take care to ensure that power cable could not be pulled out
or damaged during operation.
- There is risk of fire or electric shock.
• Do not place anything on the power cable.
- There is risk of fire or electric shock.
6Indoor Unit
Page 7
Safety Instructions
• Do not plug or unplug the power supply plug during
operation.
- There is risk of fire or electric shock.
• Do not touch(operate) the product with wet hands.
- There is risk of fire or electrical shock.
• Do not place a heater or other appliances near the power
cable.
- There is risk of fire and electric shock.
• Do not allow water to run into electric parts.
- There is risk of fire, failure of the product, or electric shock.
• Do not store or use flammable gas or combustibles near the
product.
- There is risk of fire or failure of product.
• Do not use the product in a tightly closed space for a long
time.
- Oxygen deficiency could occur.
• When flammable gas leaks, turn off the gas and open a
window for ventilation before turn the product on.
- Do not use the telephone or turn switches on or off. There
is risk of explosion or fire.
• If strange sounds, smell or smoke comes from product. Turn
the breaker off or disconnect the power supply cable.
- There is risk of electric shock or fire.
• Stop operation and close the window in storm or hurricane.
If possible, remove the product from the window before the
hurricane arrives.
- There is risk of property damage, failure of product, or
electric shock.
• Do not open the inlet grill of the product during operation.
(Do not touch the electrostatic filter, if the unit is so
equipped.)
- There is risk of physical injury, electric shock, or product
failure.
• When the product is soaked (flooded or submerged),
contact an Authorized Service Center.
- There is risk of fire or electric shock.
ENGLISH
Installation Manual 7
Page 8
Safety Instructions
• Be cautious that water could not enter the product.
- There is risk of fire, electric shock, or product damage.
• Ventilate the product from time to time when operating it
together with a stove, etc.
- There is risk of fire or electric shock.
• Turn the main power off when cleaning or maintaining the
product.
- There is risk of electric shock.
• When the product is not be used for a long time, disconnect
the power supply plug or turn off the breaker.
- There is risk of product damage or failure, or unintended
operation.
• Take care to ensure that nobody could step on or fall onto
the outdoor unit.
- This could result in personal injury and product damage.
• When mechanical connectors are reused indoors, sealing
parts shall be renewed. (for R32)
• When flared joints are reused indoors, the flare part shall be
re-fabricated. (for R32)
• Periodic ( more than once/year ) cleaning of the dust or salt
particles stuck on the heat exchanger by using water.
• Do not use means to accelerate the defrosting process or to
clean, other than those recommended by the manufacturer.
• Do not pierce or burn refrigerant cycle part.
• Be aware that refrigerants may not contain an odour.
!
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation
or repair of product.
- Low refrigerant levels may cause failure of product.
• Install the drain hose to ensure that water is drained away
properly.
- A bad connection may cause water leakage.
8Indoor Unit
Page 9
Safety Instructions
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the product where the noise or hot air from the
outdoor unit could damage the neighborhoods.
- It may cause a problem for your neighbors.
• Use two or more people to lift and transport the product.
- Avoid personal injury.
• Do not install the product where it will be exposed to sea
wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion,
particularly on the condenser and evaporator fins, could
cause product malfunction or inefficient operation.
• Any person who is involved with working on or breaking into
a refrigerant circuit should hold a current valid certificate
from an industry-accredited assessment authority, which
authorises their competence to handle refrigerants safely in
accordance with an industry recognised assessment
specification. (for R32)
• The appliance shall be stored so as to prevent mechanical
damage from occurring.
• Refrigerant tubing shall be protected or enclosed to avoid
damage.
• Flexible refrigerant connectors (such as connecting lines
between the indoor and outdoor unit) that may be displaced
during normal operations shall be protected against
mechanical damage.
• The installation of pipe-work shall be kept to a minimum.
• Pipe-work shall be protected from physical damage.
• A brazed, welded, or mechanical connection shall be made
before opening the valves to permit refrigerant to flow
between the refrigerating system parts.
• Dismantling the unit, treatment of the refrigerant oil and
eventual parts should be done in accordance with local and
national standards.
• Means for disconnection must be incorporated in the fixed
wiring in accordance with the wiring rules.
ENGLISH
Installation Manual 9
Page 10
Safety Instructions
Operation
• Do not expose the skin directly to cool air for long periods of
time. (Don't sit in the draft.)
- This could harm to your health.
• Do not use the product for special purposes, such as
preserving foods, works of art, etc. It is a consumer air
conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
• Do not block the inlet or outlet of air flow.
- It may cause product failure.
• Use a soft cloth to clean. Do not use harsh detergents,
solvents, etc.
- There is risk of fire, electric shock, or damage to the plastic
parts of the product.
• Do not touch the metal parts of the product when removing
the air filter. They are very sharp!
- There is risk of personal injury.
• Do not step on or put anything on the product. (outdoor
units)
- There is risk of personal injury and failure of product.
• Always insert the filter securely. Clean the filter every two
weeks or more often if necessary.
- A dirty filter reduces the efficiency of the air conditioner and
could cause product malfunction or damage.
• Do not insert hands or other objects through the air inlet or
outlet while the product is operated.
- There are sharp and moving parts that could cause
personal injury.
• Do not drink the water drained from the product.
- It is not sanitary and could cause serious health issues.
• Use a firm stool or ladder when cleaning or maintaining the
product.
- Be careful and avoid personal injury.
10Indoor Unit
Page 11
Safety Instructions
• Replace the all batteries in the remote control with new ones
of the same type. Do not mix old and new batteries or
different types of batteries.
- There is risk of fire or explosion.
• Do not recharge or disassemble the batteries. Do not
dispose of batteries in a fire.
- They may burn or explode.
• If the liquid from the batteries gets onto your skin or clothes,
wash it well with clean water. Do not use the remote if the
batteries have leaked.
- The chemicals in batteries could cause burns or other
health hazards.
• If you eat the liquid from the batteries, brush your teeth and
see doctor. Do not use the remote if the batteries have
leaked.
- The chemicals in batteries could cause burns or other
health hazards.
• Servicing shall only be performed as recommended by the
equipment manufacturer. Maintenance and repair requiring
the assistance of other skilled personnel shall be carried out
under the supervision of the person competent in the use of
flammable refrigerants. (for R32)
• 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.
ENGLISH
Installation Manual 11
Page 12
Installation
Annexed sheet
Or
Packing corrugated
cardboard on the
bottom
Installation
Read completely, then follow step by step.
Selection of the best location
• If the temperature might rise above 30 ℃ or the humidity might rise above RH 80 %, attach the
Dew-Protective kit or use another insulation to the indoor body.
h Dew Protective kit is sold separately.
Use glass wool material or polyethylene foam and make sure at least 10 mm thick.
• There should not be any heat source or steam near the unit.
• There should not be any obstacles to the air circulation.
• A place where air circulation in the room will be good.
• A place where drainage can be easily obtained.
• A place where noise prevention is taken into consideration.
• Do not install the unit near the door way.
• Ensure the spaces indicated by arrows from the wall, ceiling, or other obstacles.
• The indoor unit must have the maintenance space.
2, 1 WAY
4 WAY
Ceiling
Ceiling Board
500 or
more
1 000
or more
Above 1 800
3 000 or less
Floor
Ceiling Board
300 or more
500 or
more
300 or less
Unit:mm
Ceiling
Ceiling Board
500 or
more
1 000
or more
Above 2 500
4 000 or less
Floor
Ceiling Board
300 or more
500 or
more
300 or less
Unit:mm
1 WAY2 WAY
!
CAUTION
20 ±3
21±3
In case that the unit is installed near the sea, the installation parts may be corroded by salt.
The installation parts (and the unit) should be taken appropriate anti-corrosion measures.
h Please use an annexed sheet or the corrugated
cardboard on the bottom of packing as
installation sheet.
h When using the bottom sheet, please use it after
separating the installation sheet from packing of
the product floor by using a knife etc as a picture
below.
12Indoor Unit
Page 13
Installation
Minimum floor area
(for R32)
- The appliance shall be installed, operated and stored in a room with a floor area larger than the
minimum area.
- Use the graph of table to determine the minimum area.
• The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions.
4 WAY
2 WAY
1 WAY
14Indoor Unit
Page 15
Installation
!
CAUTION
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level
gauge.
• During the installation, care should be taken
• Select and mark the position for fixing bolts and piping hole.
• Decide the position for fixing bolts slightly tilted to the drain
direction after considering the direction of drain hose.
• Drill the hole for anchor bolt on the wall.
not to damage electric wires.
NOTICE
• Avoid the following installation location.
1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated.
These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
In these cases, take the following actions;
• Make sure that ventilation fan is enough to cover all noxious gases from this place.
• Ensure enough distance from the cooking room to install the air conditioner in such a place where it may
not suck oily steam.
2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
3. Avoid places where inflammable gas is generated.
4. Avoid place where noxious gas is
generated.
5. Avoid places near high frequency
generators.
Air conditioner
Take enough
distance
Cooking table
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
ENGLISH
Installation Manual 15
Page 16
Installation
Ceiling board
Hanging bolt
(W3/8 or M10)
(W3/8 or M10)
Nut
Flat washer for M10
(accessory)
Flat washer for M10
(accessory)
Nut
(W3/8 or M10)
• The following parts are local purchasing.
① Hanging Bolt - W 3/8 or M10
② Nut - W 3/8 or M10
③ Spring Washer - M10
④ Plate Washer - M10
4 WAY
Keep the length of the bolt
from the bracket to 40 mm
2 WAY
Keep the length of the bolt
from the bracket to 40 mm
1 WAY
Keep the length of the bolt
from the bracket to 40 mm
Ceiling board
Ceiling board
Adjust the
same height
Ceiling board
Ceiling
Air Conditioner body
Keep the length of 15 mm(TM,TN,TP
chassis), 31~34 mm(TQ,TR chassis)
between the air conditioner bottom
surface and the ceiling surface
Paper model
for installation
Paper pattern
for installation
Set screw of
paper model (4 pieces)
Open the ceiling board
along the outer edge of the
paper model
Ceiling
Air Conditioner body
Ceiling
Air conditioner body
105 mm(TM,TN,TP chassis),
180 mm(TQ,TR chassis)
Ceiling board
Ceiling board
Ceiling board
Set screw of
paper pattern (4 pieces)
Open the ceiling board
along the outer edge of the
paper pattern
Ceiling board
90 mm
70 mm
16Indoor Unit
Paper model
for installation
Adjust the same height
Set screw of
paper model (4 pieces)
Open the ceiling board
along the outer edge of the
paper model
Page 17
Installation
Power supply cord
Transmission cord
Remote controller cord
Power supply cord
Transmission cord
Remote
controller cord
Power supply cord
Transmission cord
Remote
controller cord
!
CAUTION
• Tighten the nut and bolt to prevent the unit from falling.
•
When mechanical connectors are reused indoors, sealing parts shall be renewed. (for R32)
• When flared joints are reused indoors, the flare part shall be re-fabricated. (for R32)
Wiring Connection
4 WAY
• Connect the wires to the terminals on the control box individually according to the outdoor unit
connection.
• Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit
respectively.
<TM/TN/TP>< TM-A/TP-B >
• While connecting wired remote controller, insertits connector to the "CN-REMO" housing of the main PCBA
and make the remote controller cord tightly by using clamp cord.
<TM/TN/TP>< TM-A/TP-B >
ENGLISH
(CN-REMO)
Clamp CordRemote Controller Connector
(CN-REMO)
Clamp CordRemote Controller Connector
Installation Manual 17
Page 18
Installation
• TQ/TR Chassis
• TM/TN/TP Chassis
COMMUNICATION LINE(IDU-ODU)
Terminal Block
Indoor
L(L1) N(L2)
INDOOR
POWER INPUT
ABA- - --BAB
GND 12 VDRY2DRY1INTERNET
Terminal Block of outdoor unit
IDUSODU
Outdoor
Unit
Terminal Block
Indoor
L(L3) N(L4)
TO AIR
FRESH KIT
Terminal Block
Indoor
AB
INDOOR
POWER INPUT
Terminal Block Indoor
1(L) 2(N)34
INDOOR
POWER INPUT
A----BABAB
GND 12 V
DRY2DRY1
INTERNET
Terminal Block of outdoor unit
IDUSODU
Outdoor
Unit
• TM-A/TP-B(*B4)
COMMUNICATION LINE(IDU-ODU)
Terminal Block
Indoor
L(L1)
N(L2)
ABA- - --B--
--
GND 12 VDRY2DRY1
Terminal Block of outdoor unit
IDUSODU
Outdoor
Unit
Terminal Block
Indoor
3(A) 4(B)
• TM-A(*A4)
COMMUNICATION LINE(IDU-ODU)
Terminal Block
Indoor
L(L1)
N(L2)
INDOOR
POWER INPUT
ABA- - --B--
--
GND 12 VDRY2DRY1
Terminal Block of outdoor unit
IDUSODU
Outdoor
Unit
Terminal Block
Indoor
Terminal Block
Indoor
3(A) 4(B)
4 WAY
2 WAY
INDOOR POWER INPUT
※ Resistance measurement position for incorrect wiring.
• Communication and Power Cable
1. Communication Cable : CVV-SB 1.0~1.5x2C
2. Power Cable : H07RN-F 1.5x3C
Terminal Block
Indoor
Terminal
Block
Indoor
1(L) 2(N)34
Terminal Block of outdoor unit
SODUIDUINTERNET DRY1 DRY2 GND 12 V
BA
B
ABA----
Outdoor unit
1 WAY
18Indoor Unit
Terminal Block Indoor
1(L) 2(N)34
INDOOR
POWER INPUT
Terminal Block of outdoor unit
IDUSODU
A----BABAB
INTERNET
DRY2DRY1
GND 12 V
Outdoor
Unit
Page 19
Installation
!
WARNING
Make sure that the screws of the terminal are free from looseness.
!
CAUTION
The Power cord connected to the unit should be selected according to the following
specifications.
!
CAUTION
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have separate power specially for the air conditioner. As for the method of wiring, follow the circuit
diagram pasted on the inside of control box cover.
2) Provide a circuit breaker switch between power source and the unit.
3) 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 give rise to burn-out of the wires.)
4) Confirm the Specification of power source
5) Confirm that electrical capacity is sufficient.
6) Be sure that the starting voltage is maintained at more than 90 % of the rated voltage marked on the name plate.
7) Confirm that the cable thickness is as specified in the power sources specification.
(Particularly note the relation between cable length and thickness.)
8) Do not install the leakage breaker in a place which is wet or moist.
Water or moist may cause short circuit.
9) The following troubles would be caused by voltage drop-down.
• Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a
overload protection device.
• Proper starting power is not given to the compressor.
ENGLISH
HAND OVER
Teach the customer the operation and maintenance procedures, using the operation manual.
(air filter cleaning, temperature control, etc.)
Installation Manual 19
Page 20
Installation
Air conditioner
unit
Ceiling
board
Decoration panel
Decoration
panel
Fit the insulator (this part) and
be careful for cool air leakage
Good example
Air
Cool air leakage
(no good)
Bad example
Ceiling
board
Air conditioner unit
Inlet GrilleInlet GrilleInlet Grille
Installation of Decoration Panel (4 WAY)
The decoration panel has its installation
direction.
Before installing the decoration panel,
always remove the paper template.
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by
amount 10 mm in length.)
The fixing screws (hexagon M5 screw) are included the indoor unit box.
2. Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decoration panel key hole ( ) on the screws fixed in step above, and slide the panel so
that the screws reach the key hole edge.
4. Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
5. Connect the louver motor connector and display connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
Piping side
Air conditioner unit
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10 mm)
Decoration panel
Control box cover
Louver motor
Display
Lead wire for
louver motor and
display
!
CAUTION
Install certainly the
decoration panel.
Cool air leakage causes
sweating.
Water drops fall.
20Indoor Unit
Decoration panel fixing screws
(Hexagon M5 screw)
Page 21
Installation of Decoration Panel (2 WAY)
Installation
ENGLISH
The decoration panel has its
installation direction.
Before installing the decoration panel,
always remove the paper template.
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body.
(Tighten by amount 10 mm in length.) The fixing screws (hexagon M5 screw) are
included the indoor unit box.
Remove the air inlet grille from the decoration panel. (Remove the hook for the air inlet grille cord.)
2.
3. Hook the decoration panel key hole ( ) on the screws fixed in step above, and slide
the panel so that the screws reach the key hole edge.
Retighten completely two temporarily fixed screws and other two screws. (Total 4 screws)
4.
5. Connect the louver motor connector and display connector.
6. After tightening these screws, install the air inlet grille (including the air filter).
Air conditioner unit
Decorative panel
Louver motor
Decorative panel fixing screws
(hexagon M5 screws)
Temporary fitting at 2 poles
(Tightening about 10 mm)
Decorative panel
fixing screws
(Hexagon M4 screw)
Piping side
Control box cover
Display
Lead wire for louver motor
and display
!
CAUTION
Install certainly the
decoration panel.
Cool air leakage causes
sweating.
Water drops fall.
Inlet Grille
Good exampleBad example
Air conditioner
Decoration panel
Fit the insulator (this part) and
be careful for cool air leakage
unit
Ceiling
board
Cool air leakage
(no good)
Air conditioner
unit
Ceiling
board
Decoration panel
Installation Manual 21
Page 22
Installation
Installation of Decoration Panel (1 WAY)
The decoration panel has its installation
direction.
Before installing the decoration panel,
always remove the paper template.
1. Open the air outlet vane, and extract side covers.
2. Remove the air inlet panel from the decoration panel.
3.
Hook decoration panel to indoor unit, using hooks attached at the backside of both side of decoration panel.
4. Arrange wires not to get caught between decoration panel and indoor unit.
• Drain piping must have down-slope (1/50 to 1/100): be sure not to
provide up-and-down slope to prevent reversal flow.
• During drain piping connection, be careful not to exert extra force
on the drain port on the indoor unit.
• The outside diameter of the drain connection on the indoor unit is
32 mm.
Piping material: Polyvinyl chloride pipe VP-25 and
pipe fittings
• Be sure to install heat insulation on the drain piping.
Heat insulation material: Polyethylene foam with
thickness more than 8 mm.
Drain test
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• Connect the main drain pipe to the exterior and
leave it provisionally until the test comes to an
end.
• Feed water to the flexible drain hose and check
the piping for leakage.
• Be sure to check the drain pump for normal
operating and noise when electrical wiring is
complete.
• When the test is complete, connect the flexible
drain hose to the drain port on the indoor unit.
Installation
ENGLISH
!
CAUTION
The supplied flexible drain hose should
not be curved, neither screwed. The
curved or screwed hose may cause a
leakage of water.
Installation Manual 23
Page 24
Installation
1/50~1/100
MAX 700 mm
Elbow
Drain pump
Unit
Drain pipe
(Local supply)
Thermal insulator
(Local supply)
Attention
1. Possible drain-head height is up to 700 mm. So, it
must be installed below 700 mm.
2. Keep the drain hose downward up to 1/50~1/100
inclination.
Prevent any upward flow or reverse flow in any
part.
3. 5 mm or thicker formed thermal insulator is
provided for the drain pipe.
4. Upward routing is not allowed.
5. Be sure to check the drain pump for normal
operation and abnormal noise when electrical
wiring is complete.
Ceiling Height Selection
The ceiling type indoor unit is available to adjust indoor airflow rate by Installer setting of the wired remote
controller for better service. Please select the height level from the below table.
4 WAY
<Ceiling Height Selection Table>
Ceiling Height
1.6~8.3 kW10.0~14.5 kW
Up to 2.3 mUp to 2.7 mLowDecrease the indoor airflow rate 1 step from standard level
Above 2.3 m, up to 2.7 m Above 2.7 m, up to 3.2 m StandardSet the indoor airflow rate as standard level
Above 2.7 m, up to 3.1 m Above 3.2 m, up to 3.6 mHighIncrease indoor airflow rate 1 step from standard level
Above 3.1 m, up to 3.6 m Above 3.6 m, up to 4.2 m Super highIncrease indoor airflow rate 2 steps from standard level
Ceiling height of ‘Very high’ function may not exist depending on the indoor unit.
For the details, refer to the product manual.
24Indoor Unit
Selection
Level
Description
Page 25
Installation
DIP Switch Setting
1. Indoor Unit
Function Description Setting Off Setting On Default
Communication
SW1
Cycle
SW2
Group Control
SW3
Dry Contact Mode
SW4
Installation
SW5
Heater linkage
SW6
Ventilator linkage
SW7
Vane selection
(Console)
Region selection
Etc.
SW8
!
CAUTION
For Multi V Models, DIP switch 1, 2, 6, 8 must be set OFF.
N/A (Default)
N/A (Default)
Selection of Master or Slave
Selection of Dry Contact
Mode
Fan continuous operation
N/A
Selection of Ventilator
linkage
Selection of up/down side
Vane
Selection tropical region
Spare
Selection of Manual or Auto
Continuous operation Removall
-
-
Master
Wired/Wireless remote
controller
operation Mode
-
Linkage Removal
Up side + Down side Vane
General model
-
-
-
Slave
Auto
-
-
Working
Up side Vane
Only
Tropical model
-
Off
Off
Off
Off
Off
Off
Off
Off
ENGLISH
2. Outdoor Unit
In case that the products meet specific conditions, “Auto addressing” function can start automatically
with the improved speed by turning the DIP switch #3 of the outdoor unit and resetting the power.
* Specific conditions:
- All names of the indoor units are ARNU****4.
- The serial number of Multi V super IV (outdoor units) is after October 2013.
DIP switch 7 segment
Outdoor Unit PCBOutdoor Unit DIP Switch
Installation Manual 25
Page 26
Installation
Group Control Setting
1. Group Control 1
n Wired remote controller 1 + Standard Indoor Units
or
MasterSlaveSlaveSlave
LGAP Network System
GND
Signal
12 V
Display Error Message
Master
Only connect serial signal and
GND lines between indoor units.
n DIP Switch in PCB
¿ Master Setting
- No. 3 Off
¡ Slave Setting
- No. 3 On
Indoor Unit DIP Switch
Some products have no DIP switch on PCB. It is possible to set indoor units to Master or Slave by
using the wireless remote controller instead of DIP switch.
For the details of the setting, please refer to the manual of the wireless remote controller.
1. It is possible to 16 indoor units(Max.) by one wired remote controller.
Set only one indoor unit to Master, set the others to Slave.
2. It is possible to connect with every type of indoor units.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
- The Master indoor unit is possible to recognize Dry Contact and Central Controller only.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired remote
controller.
It is possible to control the other indoor units except the error units.
26Indoor Unit
Page 27
h It is possible to connect indoor units since Feb. 2009.
h It can be the cause of malfuctions when there is no setting of master and slave.
h In case of Group Control, it is possible to use following functions.
- Selection of operation, stop or mode
- Temperature setting and room temperature check
- Current time change
- Control of flow rate (High/Middle/Low)
- Reservation settings
It is not possible to use some functions.
2. Group Control 2
n Wired remote controllers + Standard Indoor Units
LGAP Network System
or
Installation
ENGLISH
Master
Master
Donʼt connect serial 12 V line
Display
Error Message
MasterMaster
Slave
Slave
GND
Signal
12 V
h It is possible to control 16 indoor units(Max.) with the master wired remote control.
h Other than those, it is same with the Group Control 1.
Installation Manual 27
Page 28
Installation
3. Group Control 3
n Mixture connection with indoor units and Fresh Air Intake Unit
LGAP Network System
or
FAU
Master
Master
FAU
Slave
Display Error Message
Master
N
Master
Display Error Message
Slave
GND
Signal
12 V
M
h In case of connecting with standard indoor unit and Fresh Air Intake Unit, separate Fresh
Air Intake Unit with standard units. (N, M ≤ 16) (Because setting temperature are different.)
h Other than those, it is same with Group Control 1.
FAU
StandardStandard
FAUFAU
StandardStandard
FAU
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
28Indoor Unit
Page 29
4. 2 Remote Control
n Wired remote controller 2 + Indoor unit 1
or
LGAP Network System
Installation
ENGLISH
GND
Signal
12 V
Master
Master
Display
Error Message
Slave
Slave
Slave
Slave
1. It is possible to connect two wired remote controllers (Max.) with one indoor unit.
Set only one indoor unit to Master, set the others to Slave.
Set only one wired remote controller to Master, set the others to Slave.
2. Every types of indoor unit is possible to connect two remote controller.
3. It is possible to use wireless remote controller at the same time.
4. It is possible to connect with Dry Contact and Central controller at the same time.
5. In case that any error occurs at indoor unit, the error code is displayed on the wired
remote controller.
6. There isnʼt limits of indoor unit function.
Installation Manual 29
Page 30
Installation
5. Accessories for group control setting
It is possible to set group control by using below accessories.
Indoor unit 2 EA + Wired remote controller 1 EAIndoor unit 1 EA + Wired remote controller 2 EA
h
PZCWRCG3 cable used for connection
h
PZCWRC2 cable used for connection
PZCWRCG3
Master
Slave
PZCWRC2
Master Slave
Master
!
CAUTION
• Apply totally enclosed noncombustible conduit in case of local building code Requiring
plenum cable usage.
Total Cooling Capacity in Btu/h
EX) 5 000 Btu/h ➝ '05' 18 000 Btu/h ➝ '18'
Combination of Inverter Type and Cooling Only or Heat Pump
N: AC Inverter and H/P V: AC Inverter and C/O
U: DC Inverter and H/P and C/O
System with Indoor Unit using R32/R410A
❈ LGETA:U Ex) URN
Combinations of functions
A/B:Basic function L: Neo Plasma(Wall Mounted)
C/D: Plasma(Ceiling Cassette)
Model Designation
Airborne Noise Emission
The A-weighted sound pressure emitted by this product is below 70 dB.
** The noise level can vary depending on the site.
The figures quoted are emission level and are not necessarily safe working levels. Whilst there is a
correlation between the emission and exposure levels, this cannot be used reliably to determine
whether or not further precautions are required. Factor that influence the actual level of exposure of the
workforce include the characteristics of the work room and the other sources of noise, i.e. the number
of equipment and other adjacent processes and the length of time for which an operator exposed to the
noise. Also, the permissible exposure level can vary from country to country. This information, however,
will enable the user of the equipment to make a better evaluation of the hazard and risk.
Limiting concentration
Limiting concentration is the limit of Freon gas concentration where immediate measures can be
taken without hurting human body when refrigerant leaks in the air. The limiting concentration shall
be described in the unit of kg/m
n Calculate refrigerant concentration
Refrigerant concentration =
Installation
3
(Freon gas weight per unit air volume) for facilitating calculation
Limiting concentration: 0.44 kg/m3(R410A)
Total amount of replenished refrigerant in refrigerant facility (kg)
Capacity of smallest room where indoor unit is installed (m
Installation Manual 31
3
)
ENGLISH
Page 32
32Indoor Unit
Page 33
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