LG LK-C0608A User manual

P/NO : MFL69485101
INSTALLATION MANUAL
AIR
CONDITIONER
www.lg.com
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.
SINGLE PACKAGE TYPE AIR CONDITIONER
ENGLISH

• Do not cool excessively indoors. This may be harmful for your health and may consume more
electricity.
• Block sunlight with blinds or curtains while you are operating the air conditioner.
• Keep doors or windows closed tightly while you are operating the air conditioner.
• Adjust the direction of the air flow vertically or horizontally to circulate indoor air.
• Speed up the fan to cool or warm indoor air quickly, in a short period of time.
• Open windows regularly for ventilation as the indoor air quality may deteriorate if the air condition-
er is used for many hours.
• Clean the air filter once every 2 weeks. Dust and impurities collected in the air filter may block the
air flow or weaken the cooling / dehumidifying functions.
For your records
Staple your receipt to this page in case you need it to prove the date of purchase or for warranty
purposes. Write the model number and the serial number here:
Model number :
Serial number :
You can find them on a label on the side of each unit.
Dealer’s name :
Date of purchase :
Here are some tips that will help you minimize the power consumption when you use the air
conditioner. You can use your air conditioner more efficiently by referring to the instructions
below:
TIPS FOR SAVING ENERGY
TIPS FOR SAVING ENERGY
2
ENGLISH

3
IMPORTANT SAFETY INSTRUCTIONS
READ ALL INSTRUCTIONS BEFORE USING THE APPLIANCE.
Always comply with the following precautions to avoid dangerous situations and ensure peak
performance of your product
WARNING
It can result in serious injury or death when the directions are ignored
CAUTION
It can result in minor injury or product damage when the directions are ignored
WARNING
• Installation or repairs made by unqualified persons can result in hazards to you and others.
• The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments.
• Failure to carefully read and follow all instructions in this manual can result in equipment mal-
function, property damage, personal injury and/or death.
Installation
• 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.
• 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.
• Use the specified wires to connect the unit.
- 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 con-
denser 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.
!
!
!
SAFETY PRECAUTIONS
ENGLISH

• 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.
Operation
• Do not let the air conditioner run for a long time when the humidity is very high and a door or a win-
dow 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.
• 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.
- It may cause 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 prod-
uct on.
- Do not use the telephone or turn switches on or off. There is risk of explosion or fire
• If strange sounds, or small 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 panel 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.
• 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 unit.
- This could result in personal injury and product damage.
SAFETY PRECAUTIONS
4
ENGLISH

SAFETY PRECAUTIONS
CAUTION
Installation
• Always check for gas (refrigerant) pressure 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 neigh-
borhoods.
- It may cause a problem for your neighbors.
• Don't use 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.
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 con-
sumer air conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
!
5
ENGLISH

6TABLE OF CONTENTS
ENGLISH
2TIPS FOR SAVING
ENERGY
3IMPORTANT SAFETY
INSTRUCTIONS
7INTRODUCTION
7Features (5 / 6 / 7.6 / 8.3 RT)
8UNIT DESCRIPTION
8Points to remembered
9General features
9Installation
10 DIMENSIONAL DATA
(5 / 6 / 7.6 / 8.3 RT)
10 Foundation
10 Pre Installation checkup [Electrical]
10 Preparation for installation:
10 Avoid installing the packaged unit air
conditioner in the following
11 Carrying out installation
11 Condensate Draining
11 Pre start Up Checklist:
11 Pre start Up Procedure:
12 Operational Check-out
12
13
14 Wiring diagrams
14 Electronic Wiring
15 Field Wiring
16 Electric Characteristics
TABLE OF CONTENTS
Installation of thermostat (Optional)
Install the thermostat (Optional)

INTRODUCTION 7
ENGLISH
Features (5 / 6 / 7.6 / 8.3 RT)
Top View
Return
Air outlet vents
Supply
Control
access panel
Motor
access panel
Front View
INTRODUCTION

LG LK Series Packaged Air Conditioners are
designed and manufactured to meet the
requirements of the Gulfs severe climatic con-
ditions and are built specifically for outdoor
installations, either on ground or roof level.
The LK Series Packaged Air Conditioners are
ideal for warehouses, large halls, schools,
mosques, or wherever the requirement is for
a heavy duty unit with a Scroll compressor.
Units are designed to operate in a wide ambi-
ent temperature rang from 21 °C to 52 °C.
LK Series Packaged Air Conditioners are com-
pletely assembled, internally wired, charged
with R-22 refrigerant at factory, tested before
dispatch and ready for installation. All that is
required on site is fixing filters and connecting
ducting and power supply. Units are designed
for ducted systems which will enable them to
be installed on roof tops or on the ground.
Points to remembered
Being an electromechanical machine, the unit
may fall or cause difficulties. Remembering
the following few points will ensure correct
and prompt rectification and continued optimal
performance:
- A correct installation ensuring proper clear-
ances for correct condenser air flow and
maintenance as per the drawings shown for
recommended clearance
- Proper level base on foundation with appro-
priate vibration mount. All connections and
hook up to be followed as per instructions,
which ensures long term trouble free opera-
tion and performance.
- If power fuse is blown off, be sure to replace
the same with a new fuse having pre
designed Amperage. Do not use a steel wire
or copper wire instead of proper fuse.
Genuine fuse ensures safety and proper pro-
tection. Incorrect fusing may cause fire or
trouble with your equipment. Before replac-
ing any fuse or opening any electrical
panel door, make sure the main switch is
OFF
- Do not spray or sprinkle water directly over
or into the air conditioning equipment for
cleaning because electric insulations and ter-
minal of the components are opened
- This Air conditioning equipment is meant to
be installed out doors and suitable to normal
environment elements. Do not try to cover
or block any inlets or discharge openings to
condenser
- Periodical maintenance of the unit will give
better performance in the long run than
only break down maintenance.
NOTE
!
LG reserves the right to change, in part
or in whole the specifications of its Air
Conditioning Equipment at any time in
order to add the latest technology.
Therefore, the enclosed information may
change without any prior notice.
UNIT DESCRIPTION
8UNIT DESCRIPTION:
ENGLISH

UNIT DESCRIPTION 9
General features
LG Packaged air conditioners are designed
and manufactured with the following charac-
teristics.
- Operating up to 52° C Ambient temperature.
- Easy monitoring with use of thermostat for
control.
- Easy maintenance as access is provided for
all the operating items.
- Operating at low noise and low vibration
level.
- Adjustable evaporator fan drive set for easy
air flow adjustment.
- Easily accessible sight glass on the refrigera-
tion circuits to monitor the proper refrigerant
charge and operation.
- Thermostatic expansion valve ensures the
efficient operation at variable load conditions.
Installation
Unit : mm
Model A B C
LK-C0608A 630 900 1 350
LK-C0728A 750 900 1 350
LK-C0908A 820 1 000 1 500
LK-C1058A 900 1 000 1 500
B
A
B
B
B
A
C
B
ENGLISH

10 DIMENSIONAL DATA
ENGLISH
Unit : mm
Foundation
A flat level concrete foundation which can
support the weight of the equipment must be
provided as the unit must be level for proper
operation and functioning of controls.
Where units are to be located, over steel
trusses or on a steel platform, careful analysis
to ensure proper distribution of weight onto
the structural members should be ensured.
The steel platform should be strong enough to
hold the operating weight. Units to be mount-
ed over rubber pads/ Isolators to prevent
vibration.
Pre Installation checkup
[Electrical]
Make sure that the power supply is compliant
with current safety standards. Always install
the air conditioner in compliance with current
local safety standards. Verify that suitable
grounding connection is available. Verify that
the voltage and frequency of the power sup-
ply comply with the specifications and that the
installed power is sufficient to ensure the
operation of any other domestic appliance
connected to the same electric line. Verify
that the air conditioner is connected to the
power supply in accordance with the instruc-
tions provided in the wiring diagram included
in the manual. Verify that electric connec-
tions (cable entry, section of leads, protec-
tions) are compliant with the electric
Specification and with the instructions provid-
ed in the wiring scheme. Verify that all con-
nections comply with the standards applicable
to the installation of air conditioners.
Preparation for installation:
When deciding on the location of the unit with
the owner, the following restrictions must be
taken into consideration: The discharge air
from the condenser fan should not be
obstructed by any roofing, shelter,
ducting .etc.
Any obstruction will cause short circuiting of
condenser fans leading to reduction in capaci-
ty or nuisance tripping of the LG package unit
from the high pressure control and sometimes
in motor burnout.
Avoid installing the packaged
unit air conditioner in the fol-
lowing
- In areas where it is exposed to direct sun-
light. Close to any heat source
- In areas where curtains and furniture could
affect the supply and discharge of air.
- In areas in which there is no enough space
around the unit. (Must install as per the
required/ recommended spacing, shown in
the lay out drawings.
Model A B C
LK-C0608A 1 000 1 450 970
LK-C0728A 1 170 1 500 970
LK-C0908A 1 250 1 725 1 070
LK-C1058A 1 350 1 725 1 070
B
A
C
DIMENSIONAL DATA (5 / 6 / 7.6 / 8.3 RT)

INSTALLATION OF UNIT 11
ENGLISH
- On surfaces that are unable to support the
weight of the unit without deforming, break-
ing or causing vibrations When the unit is
running.
Carrying out installation
1 Unpack the unit carefully.
2 Unfasten or dismantle transport locks.
3 Packing material to be fully removed and
disposed.
4 The unit base frame must be fixed without
stresses to the supporting structure.
5 No forces or vibrations may be transferred
from other plant parts.
6 The flexible connections at intake and/or
discharge should be installed, well aligned
and freely moving.
7 The AVM should be freely moving and
under even load.
8 The impeller should be turning idly and
should not touch the intake cone.
9 The stability against collapse of the unit
should be checked.
Condensate Draining
Pre start Up Checklist:
Make sure the power supply voltage and fre-
quency are as given in the unit name plate.
- Make sure that unit has been installed in
accordance with the installation instruction
and applicable codes.
- Check all electrical connections in unit con-
trol panel, tighten them as required.
- Check the power supply phase sequence for
proper direction of rotation of motors.
- Make sure all system hand valves are in fully
open position and system contains an oper-
ating charge of refrigerant.
Pre start Up Procedure:
After the installation has been completed, the
following points should be covered before the
system is placed in operation.
a. Check electrical connections. Be sure they
are all tight.
b. Remove or loosen shipping retainers under
motor- compressors.
c. Check high and low pressure controls, pres-
sure regulating valves and all other safety
controls, and adjust if necessary.
d. Check refrigerant used in the system.
e. Wiring diagrams, instruction etc. attached
to LK units should be read and filed for
future reference.
f. Observe system pressures during initial
operation. Do not add oil while the system
is short of refrigerant, unless oil level is dan-
gerously low.
g. Do not leave unit unattended until the sys-
tem has reached normal operating condi-
tions and the oil charge has been properly
adjusted to maintain the oil level at the cen-
ter of the sight glass.
NOTE
!
The LK Unit should be located on a suit-
able base to provide adequate height
from the ground in order to accommo-
date the drain trap.
LK DRAIN SIPHON DESIGN
THE SIPHON MUST BE FILLED WITH WATER
BEFORE STARTING THE UNIT
Cleanout
Plug
Static pressure
Drain Pan
80 mm minimum80 mm minimum

12 DIMENSIONAL DATA
ENGLISH
Operational Check-out
Room unit has been wired according to the
wiring diagram. Unit to be in cooling mode
and there should be sufficient load on the
evaporator coil for the unit to operate. After
the system has been has operated for at least
two hours at normal operating conditions
without any indication of malfunction, it
should be allowed to operate over-night on
automatic controls
Then a thorough recheck of the entire system
operation should be made as follows:
a. Check compressor head and suction pres-
sures. If not within system design limits,
determine why and take corrective action.
b. Check liquid line sight glass and expansion
valve operation. If there are indications that
more refrigerant is required, leak test all
connections and system components and
repair any leaks before adding refrigerant.
c. When applicable, observe oil level in com-
pressor crankcase sight glass, and add oil
as necessary to bring level to center of the
sight glass.
d. Thermostatic expansion valves must be
checked for proper superheat settings.
Sensing bulbs must be in positive contact
with the suction line. Valves with high
superheat settings produce little refrigera-
tion and poor oil return too little superheat
causes low refrigeration capacity and pro-
motes liquid slugging and compressor bear-
ing washout.
e. All fan motors on air cooled condensers,
evaporators, etc. should be checked for
proper rotation. Fan motor mounts should
be carefully checked for tightness and prop-
er alignment. If belt drives are used, check
the belt tension. All motors requiring lubri-
cation should be oiled or greased as neces-
sary.
f. Using suitable instruments, carefully check
line voltage and amperage at the compres-
sor terminals. Voltage Must be within 10%
of that indicated on the compressor name-
plate. If high or low voltage indicated, notify
the power company. The current normally
should not exceed 120% of the nameplate
rating. If amperage draw is excessive,
immediately determine the cause and take
corrective action. On three phase motor-
compressors, check to see that a balanced
load is drown by each phase.
g. Measure the current consumption and com-
pare it with the nominal motor current on
the fan type plate or Motor rating plate. If
there is continuous overload switch the
centrifugal fan off immediately. Check that
the fan runs smoothly and quietly Ensure
that there are no unusual oscillations or
vibrations. Check the motor for any abnor-
mal noises.
Check that the fan runs smoothly and quietly
ensure that there are no unusual oscillations
or vibrations. Check the motor for any abnor-
mal noises.
RCGY1
Installation of thermostat (Optional)

13
ENGLISH
Attach thermostat base to wallpull the cover
off the base.
Figure 1
Figure 2
Turn off power at the main service panel by
removing the fuse or switching the appropri-
ate circuit breaker to the OFF position before
removing the existing thermostat
1Turn off power to the heating and cooling
system by removing the fuse or switching
the appropriate circuit breaker off.
2Place the system switch
(COOL/OFF/HEAT) in the OFF position.
3Place the FAN (AUTO/ON) switch in the
AUTO position
4Gently pull the cover straight off the base.
(See figure 2.)
5Put the thermostat base against the wall
when you plan to mount it (Be sure the
wires will feed through the wire opening in
the base of the themrostat)
6Mark the placement of the mounting
holes.
7Move the base out of the way. Drill mount-
ing holes. Use a hammer to tap in the sup-
plied anchors into the mounting holes.
8Fasten the base loosely to the wall as
shown in Figure 1, using two mounting
screws. Place a level against the bottom of
the base and adjust until level, then tighten
the screws. (Leveling is for appearance
only, and will not affect thermostat opera-
tion.)
9Insert stripped, labeled wires into match-
ing wire terminals. See "Wiring Diagrams",
Section 3, Figure 3.
10 Tighten screws on terminal block. Gentiy
tug on each wire to bo sure of proper
connection. Double check that each wire
is connected to the proper terminal.
11 Install two fresh "AAA" alkaline batteries
in the battery compartmont. Be sure to
match positive (+) ends of batteries with
positive (+) battery terminals in the bat-
tery cumpartment. (The thermostat will
operate from 2 size "AAA" alkaline batter-
ies or 24VAC power. When operated
from 24VAC power, your thermostat will
maintain time and continuously display
the temperature during a loss of AC
power with the batteries installed.)
12 Replace the cover on the thermostat by
snapping it in place.
13 Turn on power to the system at the main
service panel.
J1
Reset
Cover
Screw
Base
Screw anchors
OPEN
CAUTION
• Be sure exposed portions of wires do not
touch other wires.
!
CAUTION
• Installing batteries backwards can damage
the thermostat.
!
Install the thermostat (Optional)

14
ENGLISH
Wiring diagrams
Figure 3
Electronic Wiring
Follow ordinance of your governmental organi-
zation for technical standard related to electri-
cal equipment, wiring regulations and guid-
ance of each electric power company.
Use round crimp-style terminals for connect-
ing wires to the terminal block.
R
24 VAC
W1
1 st STAGE
HEATING
Y1
1 st STAGE
COOLING
Y2
2 nd STAGE
COOLING
W2
2 nd STAGE
HEATING
L
SYSTEM
MONITOR
C
24 VAC
COMMON
G
FAN CONTROL
CIR CUIT
WARNING
• Be sure to have authorized electrical en-
gineers do the electric work using spe-
cial circuits in accordance with
regulations and this installation manual.
If power supply circuit has a lack of ca-
pacity or electric work deficiency, it may
cause an electric shock or fire.
!
Electric wire
Round crimp-style terminal
Attach insulation sleeve
CAUTION
• The circuit diagram is not subject to
change without notice.
• Be sure to connect wires according to
the circuit diagram.
• Connect the wires firmly, so that not to
be pulled out easily.
• Connect the wires according to color
codes by referring the circuit diagram.
!
CAUTION
• Provide a circuit breaker between power
source and the unit as shown below.
!
Air
Conditioner
Main power source
Circuit Breaker
Use a circuit breaker
or time delay fuse.
CAUTION
• The power cord connected to the out-
door unit(Main Power supply cable)
should be complied with the following
specifications (Cable type approved by
HAR or SAA).
!
Cable Type H07RN-F
NOTE
!
When presented with 24VAC on "L" ter-
minal, the "Alarm" icon will flash on the
display.

INSTALLATION OF UNIT 15
ENGLISH
Field Wiring
5 / 6 / 7.6 / 8.3 RT 380~415 V3N~50 Hz
Switch
ELCB
• Unit ground Lines are required for preventing electrical shock accident during current leak-
age,
Communication disorder by noise effect and motor current leakage (without connection to
pipe).
• Install the main switch that can interrupt all the power sources in an integrated manner be-
cause this system consists of the equipment utilizing the multiple power sources.
• If there exists the possibility of reversed phase, lose phase, momentary blackout or the
power goes on and off while the product is operating, attach a reversed phase protection cir-
cuit locally.
Running the product in reversed phase may break the compressor and other parts.
CAUTION
!

16
ENGLISH
* The branch-circuit conductors are sized at 125 percent of the larger motor-compressor current,
plus the sum of the rated-load currents of the other loads [440.32].
* The disconnecting means for air-conditioning or refrigeration equipment must be located within
sight from and readily accessible from the equipment. “Within Sight” is visible and not more
than 50 ft(15.24 m) from each other [Article 100].
* Circuit Breaker as per NEC 440.22 (B) (1)
MODEL
CONDENSER EVAPORATOR
MFCB BCCS MOC
Compressor
Condenser
Fan SUPPLY
BLOWER
MOTOR
(kW)
FLA
RLA LRA FLA
LK-C0608A 11.0 65.5 1.4 0.75 2.0 26 20 16
LK-C0728A 13.0 75 1.4 0.75 2.0 26 20 16
LK-C0908A 15.0 100 2.0 1.1 2.7 31 23 20
LK-C1058A 16.8 114 2.0 1.5 3.5 35 26 24
RLA - Rated Load Current
LRA- Locked Rotor Current
FLA- Full Load Amps
MFCB- Maximum Fuse Circuit Breaker
BCCS- Branch Circuit Conductor Size Amps
Electric Characteristics

September, 2016