LG HT-C186HLA1 User manual

LG Cassette Type
Air Conditioner
INSTALLATION MANUAL
LG
IMPORTANT
• Please read this installation manual completely before
installing the product.
• When the power cord is damaged, replacement work shall
be performed by authorized personnel only.
• 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.
Visit us at : http://www.lgservice.com

2Cassette Type Air Conditioner
Cassette Type Air Conditioner Installation Manual
TABLE OF CONTENTS
Safety Precautions............................3
Introduction........................................6
Symbols used in this Manual..........6
Features ...........................................6
Installation..........................................7
Installation Tools...............................7
Installation of Indoor, Outdoor
Unit
.................................................8
Test running .................................23
Optional operation ....................25
• Connecting cable
• Pipes: Gas side
Liquid side
• Hanging Bolt
(W 3/8 or M10 length 650mm)
• Insulated drain hose
• Additional Drain hose
(Inner Dia.............32mm)
• Horizontal meter
• Screw driver
• Electric drill
• Hole core drill (ø70mm)
• Flaring Tools set
• Torque Wrenches
• Hexagonal Wrench (4mm, 5mm)
• Gas-leak detector
• Owner’s Manual
• Installation Manual
• Thermometer
• • Manifold gage
• • Vacuum pump
Installation
Requirements Required Parts Required Tools

Installation Manual 3
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions
must be followed.
• 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.
Be sure not to do.
Be sure to follow the instruction.
Safety Precautions
•Installation
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 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 ground the product.
• There is risk of fire or
electric shock.

4Cassette Type Air Conditioner
Safety Precautions
Do not modify or extend the power cable.
• There is risk of fire or electric shock.
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 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.
Do not store or use flammable gas or combustibles
near the product.
• There is risk of fire or failure of product.
•Operation
n
i
l
o
s
a
G

Installation Manual 5
Safety Precautions
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.
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.
90˚
•Installation

6Cassette Type Air Conditioner
Introduction
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.
NOTICE
Introduction
Symbols used in this Manual
Features
Anti-bacteria filter
Air
Intake
Air Outlet

Installation
Installation Manual 7
Installation
Installation Tools
Figure FigureName
Screw driver
Electric drill
Measuring tape, Knife
Hole core drill
Spanner
Torque wrench
Ohmmeter
Hexagonal wrench
Ammeter
Gas-leak detector
Thermometer,
Horizontal meter
Flaring tool set
Manifold gage Vacuum pump
Name
R-22

8Cassette Type Air Conditioner
Installation
Installation of Indoor, Outdoor Unit
Selection of the best location
1) Indoor unit
• There should not be any heat source or steam
near the unit.
• There should not be any obstacles to prevent
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 keep the maintenance
space.
2) Outdoor unit
• If an awning is built over the unit to prevent direct sunlight or rain exposure, be careful that
heat radiation from the condenser is not restricted.
• There should not be any animals or plants which could be affected by hot air discharged.
• Ensure the spaces indicated by arrows from the wall, ceiling, fence or other obstacles.
Unit:cm
Ceiling
Ceiling Board
Ceiling Board
er
o
m ro 03
052
e
v
ob
A
sse
l r
o 004
001
e
r
om ro
50 or
more
50 or
more
s
s
el ro 03
Floor
More than
30cm
e
c
n
e
Fr
o
s
e
l
c
a
t
s
b
o
More than 70cm
More than 50cm
More than
More than
30cm
30cm
More than
30cm
f
o
o
r
n
u
S
More than 50cm
(Service space)
More than
30cm
e
cne
Fr
o
s
e
l
ca
t
s
b
o
More than 70cm
More than 50cm
More than
More than
30cm
30cm
More than
30cm
f
o
o
r
n
uS
3) Settlement of outdoor unit
• Anchor the outdoor unit with a bolt and nut(ø10mm)
tightly and horizontally on a concrete or rigid mount.
• 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.
• In the case when the vibration of the unit is conveyed to
the hose, secure the unit with an anti-vibration rubber.
Bolt Tubing connection

Installation
Installation Manual 9
1. Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced.
2. 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 malfunc-
tion or inefficient performance.
3. If outdoor unit is installed close to the seaside, it should avoid direct exposure to the sea wind. Otherwise it
needs additional anticorrosion treatment on the heat exchanger.
1. If you can’t meet above guide line in the seaside installation, please contact LG Electronics for the additional anticorrosion treatment.
2. Periodic ( more than once/year ) cleaning of the dust or salt particles stuck on the heat exchanger by using water
4) Installation guide at the seaside
4.1 Selecting the location(Outdoor Unit)
1) If the outdoor unit is to be installed close to the seaside, direct exposure to the sea wind should be avoided.
Install the outdoor unit on the opposite side of the sea wind direction.
2) In case, to install the outdoor unit on the seaside, set up a windbreak not to be exposed to the sea wind.
3) Select a well-drained place.
• 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.
• It should be keep more than 70 cm of space
between outdoor unit and the windbreak for easy
air flow.
Sea wind Sea wind
Sea wind
Windbreak
CAUTION

Installation
Cassette Type Air Conditioner
10
5) Piping length and the elevation
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
Oil trap
If piping length is more than 5m
Outdoor unit
Indoor unit
B
CAUTION:
• Rated performance for refrigerant line length of:7.5m
• Capacity is based on standard length and maximum allowance length is on the
basis of reliability.
• Improper refrigerant charge may result in abnormal cycle.
• Oil trap should be installed every 10 meters.
4
Extra refrigerant = (Extended length - Rated length) x Additional refrigerant.
Gas Liquid Standard Max. Standard Max.
Capacity
5/8"
(15.88mm)
1/4"
(6.35mm) 7.5 30 5
5/8"
(15.88mm)
1/4"
(6.35mm) 7.5 30 5 15
Pipe Size Length (m) Elevation (m) *Additional
(Diameter:Ø)
refrigerant(g/m)
15
(19.05mm)
3/4" 3/8"
(9.52mm) 7.5 30 5 15
40
60
40
HT-C186HLA1
5/8"
(15.88mm)
1/2"
(12.70mm)
1/4"
(6.35mm)
1/4"
(6.35mm)
7.5 30 5
7.5 30 5
15
15
30
25
HT-C246HLA1
HT-C306HLA0
HT-C368DLA0
HT-C488DLA0
3/8"
(9.52mm)
(19.05mm)
3/4"
HT-C488DLA1 7.5 50 5 60
15
HT-C368DLA1
5/8"
(15.88mm)
1/4"
(6.35mm) 7.5 50 5 15 40
HT-C306HLA1 5/8"
(15.88mm)
1/4"
(6.35mm) 7.5 50 5 15 40

11Installation Manual
Installation
• 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.
CAUTION:
• This air-conditioner uses a drain pump.
• Horizontly install the unit using a
level gauge.
• During the installation, care should be
taken not to damage electric wires.
• Thoroughly study the following installation locations:
1. In such places as restaurants and kitchens, considerable amount of oil steam and flour
adhere to the turbo fan, the fin of the heat exchanger and the drain pump, resulting in heat
exchange reduction, spraying, dispersing of water drops, drain pump malfunction, etc.
In these cases, take the following actions:
• Make sure that the ventilation fan for smoke-collecting hood on a cooking table has
sufficient capacity so that it draws oily steam which should not flow into the suction of the
air conditioner.
• Make enough distance from a cooking room to install the air conditioner in such a place
where it may not suck in oily steam.
2. Avoid installing air conditioner in such circumstances where cutting oil mist or iron powder is
in suspension in factories, etc.
3. Avoid places where inflammable gas is generated, flows in, is stored or vented.
4. Avoid places where sulfurous acid gas or corrosive gas is generated.
5. Avoid places near high frequency generators.
NOTICE
Ceiling opening dimensions and hanging bolt location
• The dimensions of the paper model for installing are
the same as those of the ceiling opening dimensions.
Ceiling board
Level gauge
Ceiling
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
810
785
Hanging bolt
tlob gnignaH
30 30
276
018 03
0
3
840
048
Unit : mm
e
z
is
t
inU
Unit size

Cassette Type Air Conditioner
12
Installation
The Indoor Unit Installation
• The following parts is option.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
• Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø 70 hole-core drill.
Wall
m
m
7~
5
Indoor Outdoor
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
m
m0
5
1
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
CAUTION: Tighten the nut and
bolt to prevent unit falling.
Remote Controller Installation
• Although the room temperature sensor is in the indoor unit, the remote controller should be installed in
such places away from direct sunlight and high humidity.
Installation of the remote controller
• Select places that are not splashed with water.
• Select control position after receiving customer approval.
• The room temperature sensor is built in the indoor unit.
• This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult to
see.(The standard height is 1.2 ~ 1.5m high)
Routing of the remote controller cord
• Keep the remote controller cord away from the refrigerant piping and the drain piping.
• To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power
cables (audio equipment, television set, etc.)
• If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water
droplets from running.

13Installation Manual
Installation
1. Remove the battery cover from the remote controller.
• Slide the cover according to the arrow direction.
2. Insert the two batteries.
• Be sure that the (+) and (-) directions are correct.
• Be sure that both batteries are new.
3. Re-attach the cover.
• Slide it back into position.
• Fix the under plate on the wall
• Separate the under plate from Remote control box.
• Fix the cord clamps on the wall by
ø 3 tapping screws (accessory).
• Fix the remote control cord.
Remote control
box body
Cord clamp
(accessory)
Lever carefully
the box open
using a screw
driver, etc.
Front case
t
r
a
p
r
e
w
o
l
e
h
T
Face of wall
Under plate
Screw (accessory)
WIRED REMOTE CONTROL INSTALLATION
REMOTE CONTROL PREPARATION
DISASSEMBLING
ELECTRICAL WIRING
HOW TO MOUNT ONTO A WALL
HOW TO INSERT BATTERIES
Wire and make sure that teminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m,
use a wire size greater than 0.5mm2.
Remote controller
(Main board)
CN REMO
• Do not use rechargeable
batteries, such batteries differ
from standard dry cells in
shape, dimensions, and
performance.
• Romove the batteries from the
remote controller if the air
conditioner is not going to be
used for some long time.
HOW TO INSERT BATTERIES

Cassette Type Air Conditioner
14
Installation
Cord, clip
Indoor
Power cord
Remote
Controller cord
Fire prevention
cover
Connector
guide cover
Fire prevention cover
fitting screw(1 unit)
Connector guide cover
fitting screw(2 units)
Wiring Connection
Terminal Block in Indoor
1(L) 2(N) 3 4
Connected to indoor unit
1(L) 2(N) 3(L) 4(N) 5 6 7 8
outdoor unit
Main
Terminal Block in Indoor
1(L) 2(N) 3 4
Connected to indoor unit
outdoor unit
Main
1(R) 2(S) 3(T) 4(N ) 6(L) 7(N) 8 9
3 ,380V ,50HZ
1 ,220V , 50Hz
WARNING: Make sure that the screws of the terminal are free from
looseness.
The power cord connected to the outdoor unit
should be complied with the following specifications
(Rubber insulation, type H05RN-F approved by HAR
or SAA).
If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer
or its service agent.
The connecting cable connected to the indoor and
outdoor unit should be complied with the following
specifications (Rubber insulation, type H05RN-F
approved by HAR or SAA).
CAUTION
mm5
.
8
20mm
L
Y
/
N
G
mm
5
.7
20mm
L
Y
/
N
G
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
2
(18K/24K/36K)
1.25mm
2
(48K)
Capacity 1 Phase 3 Phase
18k/24k/30k
BTU/h
36k BTU/h
48k
BTU/h
2.5mm
2
-
2.5mm
2
3.5mm
2
Ø
Ø
Open the control box cover and connect the remote control cord and Indoor power wires.
-
-

Installation Manual 15
Installation
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.
Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Switch box
Refrigerant pipe
Circuit Breaker
Use circuit breaker or time delay fuse.
ELECTRICAL WIRING
CONNECTING THE CABLE TO OUTDOOR UNIT
1. Remove the Cover control from the unit by loosening a
screw.
Connect the wires to the terminals on the control board
individually as following.
2. Secure the cable onto the control board with the holder
(clamper).
3. Refix the cover control to the original position with the
screw.
4. Use a recongnized circuit breaker 20A between the
power source and the unit. A disconnection device to
adequately disconnect all supply lines must be fitted.
Outdoor unit
Terminal block
Connecting
cable
Cover control Holder for
connecting
cable
Over 5mm
Holder for
power supply
cord Power supply
cord

16 Cassette Type Air Conditioner
Installation
• Preparation of Piping
Connecting Pipes to the Indoor Unit
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the
following procedure.
1) Cut the pipes and the cable.
• Use the accessory piping kit or the pipes
purchased locally.
• Measure the distance between the indoor and
the outdoor unit.
• Cut the pipes a little longer than measured
distance.
• Cut the cable 1.5m longer than the pipe
length.
2) Burrs removal
• Completely remove all burrs from the cut
cross section of pipe/tube.
• Put the end of the copper tube/pipe to
downward direction as you remove burrs in
order to avoid to let burrs drop in the tubing.
3) Putting nut on
• Remove flare nuts attached to indoor and
outdoor units, than put them on pipe/tube
having completed burr removal.
(Not possible to put them on after flaring
work)
4) Flaring work
• Carry out flaring work using flaring tool as
shown below.
Firmly hold copper tube in a bar(or die) as
indicated dimension in the table above.
5) Check
•Compare the flared work with figure below.
•If flare is noted to be defective, cut off the
flared section and do flaring work again.
Copper
tube
90°Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
Outside diameter A
mm inch mm
Ø6.35 1/4 0.5~0.8
Ø9.52 3/8 0.5~0.8
Ø12.7 1/2 0.5~0.8
Ø15.88 5/8 0.8~1.0
Ø19.05 3/4 0.8~1.0

Installation Manual 17
Installation
1. Form the piping according to its routing. Avoid bending
and bending back the same piping point more than three
times. (This will result in hardening the pipe.)
2. After deforming the piping, align centers of the union
fitting of the indoor unit and the piping, and tighten them
firmly with wrenches.
3. Connect pipe to the service valve or ball valve which is
located below the outdoor unit.
4. After completing the piping connection, be sure to check
if there is gas leakage in indoor and outdoor connection.
After completing the piping connection, execute vacuum
drying for the connecting piping and the indoor unit.
The vacuum drying must be carried out using the service
ports of both the liquid and gas side valves.
CAUTION: Use two wrenches and
tighten with regular torque.
Outdoor
uni t
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
Union
Flare nut fastening torque
Ø6.35mm 1.8 kg.m
Ø9.52mm 4.0 kg.m
Ø12.7mm 5.5 kg.m
Ø15.88mm 6.6 kg.m
Ø19.05mm 6.6 kg.m
Piping Connection
Vacuum drying
Model Liquid side piping Gas side piping
18k Btu/h Ø 6.35mm Ø12.70mm
24k , 30k, 36k Btu/h
48k Btu/h Ø 9.52mm Ø19.05mm
Ø 6.35mm Ø15.88mm

18 Cassette Type Air Conditioner
Installation
Installation of Decorative Panel(Elevation Grille)
1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body.
(Tighten by amount 10mm in length.)
The fixing screws (hexagon M5 screw) are included unit box.
2. Remove the air inlet grille from the decorative panel. (Remove the hook for the air inlet grille cord.)
3. Hook the decorative 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 display connector, elevation grille connector and power supply
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
Louver motor
Decorative panel fixing screws
(Hexagon M5 screw)
Air conditioner unit
Decorative panel
Key holes
Inlet grille
Display
The decorative panel has its
installation direction.
Before installing the decorative panel,
always remove the paper template.

Installation Manual 19
Elevation Grill (Remote Controller_Accessory)
• How to Use Remote Controller
• Main Components of Lift Grill
As for operation of Remote Controller, use it by
directing the transmitter part of Remote Controller
to the receiver part of front panel directly under
front panel.
• Do not drop it down or into water. Or else there is
worry about trouble failure.
• Do not press hard the Remote Controller button
with nail (ballpoint pen or other sharp substance).
Or else there is worry about trouble failure.
• In case when obstacle such as curtain hides the
signal reception part of receiver in between the
space interval, Remote Controller operation is
infeasible.
Lift grill front panel assembly
Bolts for installation (4 EA, P/No. 3A00255K)
Instruction manual
Remote Controller for lift grill
Ascend
Signal transmitter
Descend
Stop
Installation

20 Cassette Type Air Conditioner
e
c
n
a
t
s
i
d
p
o
t
s
c
i
t
a
m
o
t
u
A
 If you want to change automatic distance
setting, consult with your sale agency.
Automatic Stop Distance of Grill
Ceiling height Low Medium High
(Height: 3~4 m)
Automatic stop
1.5±0.5 m 2.5±0.5m 3.5±0.5 m
distance
- Depress the down button( ).
Then suction grill descends and stops automatically at a
certain distance.
- You may stop it at wanted distance point by depressing
the stop button ( ) when descending.
- Depress the up button( ).
Then suction grill goes up and enters into the front panel.
1. Stop the Air Conditioner Operation
.2. Descend the Suction Grill
3. Raise the Suction Grill
- Depress the stop button( ).
Make use of this when you want to stop it at your wished
position.
4. Stop the Suction Grill during Rising
• Always stop the air conditioner operation for safety before operating lift grill.
• Take heed _ there is worry about dust fall etc. when suction grill descends.
• In case when the set automatic stop distance goes wrong, check the set value of operation
panel and confirm if there is neither obstacle nor mankind.
• When you are not to remove obstacle, stop the operation before touching the obstacle.
• How to Operate the Lift Grill
• Don't lay any material upon suction grill.
• Suction grill comprises 2 strands of wire. If any substance is placed on it then balance may be
destroyed so that the substance would drop down and cause a breakage or damage. Also the
matter may cause trouble owing to which the grill would not be correctly inserted at front panel.
• Don't shake suction grill. Or else there is worry that it may collide with adjacent material and the
suction grill fall down.
• Don't pull suction grill. Don't draw out suction grill irrationally. Or else there is worry that lift grill
drive part is damaged and suction grill might drop down.
• Don't place obstacle in lift passage of lift grill.
When suction grill descends, it automatically stops at a certain distance.
If there is any obstacle in lift passage, suction grill might drop down and there may be caused
trouble failure of lift grill drive part.
• Turn off the air conditioner operation button before operating the lift grill.
Always stop the air conditioner operation for safety when suction grill descends.
• Don't damage lift rope by a sharp material. Or else there is worry about suction grill dropping
because of rope cutoff.
Installation