LG LRNN TE Series User manual

System
Heat Pump Indoor Unit
INSTALLATION MANUAL
LG
MODELS: LRNN, LRNV-TE/TD Series
Type: Ceiling Mounted Cassette - 4Way
website http://www.lgservice.com
IMPORTANT
• 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.

2Indoor Unit
Ceiling Mounted Cassette - 4Way Type Indoor Unit Installation Manual
TABLE OF CONTENTS
❏Installation guide map
❏Four type "A" screws & plastic
anchors
❏Connecting cable
❏Pipes: Gas side
Liquid side
(Refer to Product Data)
❏Insulation materials
❏Additional drain pipe
❏Level gauge
❏Screw driver
❏Electric drill
❏Hole core drill
❏Horizontal meter
❏Flaring tool set
❏Specified torque wrenches
(different depending on model No.)
❏Spanner.......Half union
❏Hexagonal wrench
❏Gas-leak detector
❏Vacuum pump
❏Gauge manifold
❏Owner's manual
❏Thermometer
Installation Parts ....................3
Safety Precautions.................4
Installation
Selection of the best location7
Ceiling dimension and hang-
ing bolt location......................8
Wiring Connection.................9
Installation of Deco ration
Panel ....................................10
Installation of Remote
Control..................................13
Drain Pipe Work...................14
Installation of Drain Pump...16
Optional Operation..............18
Installation Requirements Required Parts Required Tools

Installation Manual 3
Installation Parts
3
Anti-bacteria filter
Air
Intake
Air Outlet
Installation Parts
Name
Quantity
Shape for gas pipe
for liquid pipe
Clamp metal
1 EA
Insulation for
fitting
1 SET
Drain hose
1 EA
Clamp
8 EA
Washer for
hanging backet
8 EA
(Other)
• Paper pattern for
installation
• Owner's manual
• Installation manual

4Indoor Unit
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■Be sure to read before installing the air conditioner.
■Be sure to observe the cautions specified here as they include important items related to safety.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the
following indications.
■Meanings 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.
■Installation
Do not use a defective or under-
rated circuit breaker. Use this
appliance on a dedicated circuit.
•Thereisriskoffireorelectricshock.
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.
•Thereisriskoffireorelectricshock.
Install the panel and the cover
of control box securely.
•Thereisriskoffireorelectricshock.
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.
•Thereisriskoffireorelectricshock.

Installation Manual 5
Safety Precautions
■Operation
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.
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.
Gasolin

6Indoor Unit
Safety Precautions
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.
Do not install the product where
the noise or hot air from the out-
door 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 con-
denser and evaporator fins, could
cause product malfunction or inefficient
operation.
90˚
■Installation

Installation Manual 7
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:cm
Ceiling
Ceiling Board Ceiling Board
30 or more
Above 250 400 or less
100 or more
50 or
more
50 or
more
30 or less
Floor
Installation
Selection of the best location
CAUTION : 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.

8Indoor Unit
Installation
Ceiling dimension and hanging bolt location
Level gauge
Ceiling
Unit:mm
570 Unit size
570 Unit size
672 (Hanging bolt)
7575
600 (Ceiling opening)
600 (Ceiling opening)
521(Hanging bolt) 39.5
39.5
CRNN126TEA0, CRNN186TEA0
Ceiling board
Unit:mm
840 Unit size
840 Unit size
672 (Hanging bolt)
101.5101.5
875 (Ceiling opening)
875 (Ceiling opening)
785(Hanging bolt) 45
45
TD Series
•The dimensions of the paper model for installation are the same as those of the ceiling opening dimensions.
•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
CAUTION :
•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.
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance

Installation Manual 9
Installation
Set screw of
paper pattern (4 pieces)
Paper pattern
for installation
Ceiling board
150mm
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 pattern.
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.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
CAUTION : Tighten the nut and bolt
to prevent unit from
falling off.
[Air inlet side view]
Control box cover
Indoor
power cord
Remote
control cord
Control box cover
fitting screw(2 units)
Terminal Block in Indoor
1(L) 2(N) 3 4
INDOOR POWER INPUT
Terminal Block in Outdoor
ABC D Vcc
•Open the control box cover and connect the remote control cord and Indoor power wires.
Wiring Connection
WARNING : Make sure that the screws of the terminal are free from looseness.

10 Indoor Unit
Installation
1. Temporarily fix two decoration panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by
amount 10mm 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).
Decoration panel fixing screws
(hexagon M5 screws)
Temporally fitting at 2 places
(Tightening about 10mm)
Control box cover
Piping side
Inlet GrilleInlet GrilleInlet Grille
Inlet GrilleInlet Grille
Louver motor
Decoration panel fixing screws
(Hexagon M5 screw)
Air conditioner unit
Decoration panel
Key holes Display
Lead wire for
louver motor and
display
The decoration panel has its installation
direction. Before installing the decoration panel,
always 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
CAUTION : Install
certainly the deco-
ration panel.
Cool air leakage causes
sweating.
Water drops fall.