LG MFL67568401 User manual

INSTALLATION MANUAL
AIR CONDITIONER
• 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.
P/NO : MFL67568401
www.lg.com
TYPE: Ceiling Cassette - 1Way (Art Type)
ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH

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 ...............................7
Selection of the Best Location ...7
Ceiling Dimension and
Hanging Bolt Location ...........8
Installation of Decoration
Panel (Grille Type) .................9
Drain Piping .........................10
Wiring Connection ...............11
Installation of Wired Remote
Controller..............................13
Name and function of wired
remote controller(Accessory)
..............................................15
Dip Switch Setting ...............16
Installation Requirements Required Parts Required Tools

Installation Manual 3
Installation Parts
ENGLISH
RemoteController
TEMP
Wired remote
controller
Inlet
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
1EA
Installation and Owner's manual
1EA
Grille type

Safety Precautions
4Indoor Unit
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.
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.
nInstallation
Do not use a defective or underrated 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 electrician, or an Authorized Service
Center.
• Do not disassemble or repair the product. 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.

Installation Manual 5
Safety Precautions
ENGLISH
nOperation
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.
For installation, always contact the dealer or an
Authorized Service Center.
• There is risk of fire, electric shock, explosion, or injury.
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 store or use flammable gas or combustibles near the product.
• There is risk of fire or failure of product.
Gasolin

Safety Precautions
6Indoor Unit
Install the drain hose to ensure that water is
drained away properly.
• A bad connection may cause water leakage.
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.
nInstallation
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.

Installation Manual 7
Installation
ENGLISH
• 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 2500 3300 or less
1000 or more
500 or
more
500 or
more
300 or less
Floor
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.
• 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.
NOTICE
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance

Installation
8Indoor Unit
Ceiling Dimension and Hanging Bolt Location
Level gauge
Ceiling
(unit: mm)
TT Chassis
TU Chassis
1,285
1,385
50
250
600 50
466
1,180
448
600
250
965
1,065
50 50
466
860
448
306 400 4040
400 4040 306
354
354
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
direction after considering the direction of drain hose.
• Drill the hole for anchor bolt on the wall.
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
70mm
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accessory)
Keep the length of the bolt
from the bracket to 40mm
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
Keep the length of 20~22mm
between the air conditioner bottom
surface and the ceiling surface
• 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.
• 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

Installation Manual 9
ENGLISH
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. (9, 12kBtu/h : 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 20mm)
Side cover
Air inlet grille
Air inlet grille
The decoration panel has its installation
direction.
Before installing the decoration panel,
always remove the paper template.
Cool air leakage
(no good)
Decorative panel
Air conditioner
unit
Ceiling
board
Fit the insulator (this part) and
be careful for cool air leakage
Decorative panel
Air conditioner
unit
Ceiling
board
Good example Bad example
Installation of Decoration Panel (Grille Type)
Install certainly the
decoration panel.
Cool air leakage caus-
es sweating.
Waterdrops fall.

10 Indoor Unit
Installation
• 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
32mm.
• Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe VP-25 and
pipe fittings
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 flex-
ible drain hose to the drain port on the
indoor unit.
Heat insulation material: Polyethylene foam with thick-
ness more than 8 mm.
Drain Test
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
1/50~1/100
Max 700mm
Feed water
Drain pump
Drain pan
Flexible drain hose
(accessory)
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip (accessory)
1/50~1/100 slope
Hanger
distance Hanger bracket
Max 700mm
Flexible drain hose
Insulation
Metal
clamp
Max 300mm 1~15m
Drain Piping
The supplied flexible drain hose should
not be curved, neither screwed. The
curved or screwed hose may cause a leak-
age of water.