LG ARNU07GTUA4 User manual

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Ceiling Cassette - 1Way (Art Type)
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.
INSTALLATION MANUAL
AIR
CONDITIONER
P/NO : MFL69440007
Original instruction
ENGLISH

2Indoor Unit
Ceiling Cassette - 1Way(Art Type) Type Indoor Unit Installation Manual
TABLE OF CONTENTS
o Installation guide map
oFour type "A" screws & plastic
anchors
oConnecting cable
oPipes: Gas side
Liquid side
oInsulation materials
oAdditional drain pipe
oLevel gauge
oScrew driver
oElectric drill
oHole core drill
oHorizontal meter
oFlaring tool set
oSpecified torque wrenches
oSpanner .......Half union
oHexagonal wrench
oGas-leak detector
oVacuum pump
oGauge manifold
oOwner's manual
oThermometer
Installation Parts ....................3
Safety Precautions.................4
Installation
Selection of the Best Location ...6
Ceiling Dimension and Hang-
ing Bolt Location ....................7
Wiring Connection .................8
Installation of Decoration
Panel (Panel Type) ................9
Installation of Decoration
Panel (Grille Type)...............10
Drain Piping..........................11
DIP Switch Setting...............12
Group Control Setting..........13
Model Designation ..............18
Airborne Noise Emission.....18
Limiting concentration .........18
Installation Requirements Required Parts Required Tools

Installation Manual 3
Installation Parts
ENGLISH
Wired Remote Controller
(Accessory) Wired Remote Controller
(Accessory)
Air
Intake
Air Intake
Air
Intake
Air Outlet
Air Outlet
Installation Parts
Name
Quantity
Shape for gas pipe
for liquid pipe
Clamp metal
2 EA
Insulation for
fitting
1 SET
Drain hose
1 EA
Plastic band
8 EA
Washer for
hanging bracket
4 EA
Name
Quantity
Shape
Paper pattern for installation
1 EA
Installation and Owner's manual
1 EA
Panel type Grille type
• Screws for fixing panels are attached to decoration panel.
Installation Tool

4Indoor Unit
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
nBe sure to read before installing the air conditioner.
nBe sure to observe the cautions specified here as they include important items related to safety.
nIncorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
nMeanings of symbols used in this manual are as shown below.
WARNING
CAUTION
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
Be sure not to do.
Be sure to follow the instruction.
WARNING
nInstallation
Do not use a defective or under-
rated circuit breaker. Use this
appliance on a dedicated circuit.
• There is risk of fire or electric shock.
For electrical work, contact the
dealer, seller, a qualified electri-
cian, or an Authorized Service
Center.
• Do not disassemble or repair the
product. There is risk of fire or elec-
tric 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 cir-
cuit 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 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.
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.

Installation Manual 5
Safety Precautions
ENGLISH
nOperation
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 condi-
tioner could fall with it, causing prop-
erty damage, product failure, and
personal injury.
Do not store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
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.
Do not turn on the breaker or power under condi-
tion that front panel, cabinet, top cover, control
box cover are removed or opened.
• Otherwise, it may cause fire, electric shock, explosion or
death.
Use two or more people to lift and transport the product.
• Avoid personal injury.
Always check for gas (refriger-
ant) 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 prop-
erly.
• A bad connection may cause water
leakage.
Keep level even when installing
the product.
• To avoid vibration or water leakage.
CAUTION
nInstallation

6Indoor Unit
Installation
• 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.
Read completely, then follow step by step.
Unit:mm
Ceiling
Ceiling board
Ceiling board
200 or more
Above 1 800 3 300 or less
1 000 or more
500 or
more
500 or
more
300 or less
10 or more
Floor
20 ± 3
Installation
Selection of the Best Location
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-corro-
sion measures.
CAUTION
NOTE
• 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.
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance

Installation Manual 7
ENGLISH
Installation
Ceiling Dimension and Hanging Bolt Location
Level gauge
Ceiling
(Unit: mm)
TT Chassis
TU Chassis
1 285(Hanging bolt)
1 385(Ceiling opening)
50
250
600 50
466
(Ceiling opening)
1 180
448
600
250
965(Hanging bolt)
1 065(Ceiling opening)
50 50
860
448
306 400 4040
400 4040 306
354
(Hanging bolt)
466
(Ceiling opening)
354
(Hanging bolt)
Ceiling board
• The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions.
• This air-conditioner uses a drain pump.
• Install the unit horizontally using a level
gauge.
• During the installation, care should be
taken not to damage electric wires.
• Select and mark the position for fixing bolts and piping hole.
• Decide the position for fixing bolts slightly tilted to the drain di-
rection after considering the direction of drain hose.
• Drill the hole for anchor bolt on the wall.
CAUTION
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
70 mm
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accessory)
Keep the length of the bolt
from the bracket to 40 mm
Open the ceiling board
along the outer edge of the
paper model
Flat washer for M10
(accessory)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Air conditioner body
• The following parts are local purchasing.
①Hanging bolt - W 3/8 or M10
②Nut - W 3/8 or M10
③Spring washer - M10
④Plate washer - M10
Tighten the nut and bolt to prevent unit
from falling off.
CAUTION
• The following parts are local purchasing.
①Hanging bolt - W 3/8 or M10
②Nut - W 3/8 or M10
③Spring washer - M10
④Plate washer - M10

8Indoor Unit
Installation
Terminal Block Indoor
1(L) 2(N) 3 4
INDOOR
POWER INPUT
A ----BABAB
GND 12V
DRY2DRY1 INTERNET
Terminal Block of outdoor unit
IDUSODU Outdoor
Unit
• Connect the wires to the terminals on the control board 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.
Wiring Connection
Make sure that the screws of the terminal are free from looseness.
WARNING
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.
CAUTION

Installation Manual 9
ENGLISH
Installation
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.
5. Screw 7 fixing screws. (7,9,12 kBtu : 6 screws)
6. Connect the vane motor connector ,display connector and air inlet panel connector.
7. Install the air inlet panel (including the air filter) and side covers.
Air conditioner unit
Decorative panel
Side cover
Decorative panel
fixing screws
(hexagon M6 screws)
(tightening about 20 mm)
Air inlet panel
Air outlet vane
Plasma filter
(applied only to plasma model)
Mesh
Control box cover
The decoration panel has its installation
direction.
Before installing the decoration panel, al-
ways remove the paper template.
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
Installation of Decoration Panel (Panel Type)
Install certainly the
decoration panel.
Cool air leakage
causes sweating.
Waterdrops fall.
CAUTION

10 Indoor Unit
Installation
1. Open the air outlet vane, and extract side covers.
2. Remove the air inlet grille 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.
5. Screw 7 fixing screws. (7,9,12 kBtu : 6 screws)
6. Connect the vane motor connector and display connector. (Plasma connector for plasma model)
7. Install the air inlet grille (including the air filter) and side covers.
Air conditioner unit
Decorative panel
Plasma filter
(applied only to plasma model)
Mesh
Control box cover
Decorative panel
fixing screws
(hexagon M6 screws)
(tightening about 20 mm)
Side cover
Air inlet grille
Air outlet vane
The decoration panel has its installation
direction.
Before installing the decoration panel, al-
ways remove the paper template.
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
Installation of Decoration Panel (Grille Type)
Install certainly the
decoration panel.
Cool air leakage
causes sweating.
Waterdrops fall.
CAUTION