2
Do not make drain piping like the following.
* The feature can be changed according to a
type of model.
Do not raise
Water
leakage
Accumulated
drain water
Air
Waving
Water
leakage
Tip of drain hose
dipped in water
Water
leakage
Ditch
Less than
50mm gap
*The feature can be changed according a type
of model.
Forming the Piping
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1
Tape the piping, drain hose and connecting
cable from down to up.
2
Secure the tapped piping along the exterior
wall using saddle or equivalent.
Trap is required to prevent water
from entering into electrical parts.
Taping
Saddle
Drain hose
Pipings
Connecting cable
Seal small openings
around pipings with a
gum type sealant.
- Do a leak test of all joints of the tubing(both
indoor and outdoor) and both gas and liquid
side service valves.
Bubbles indicate a leak. Be sure to wipe off
the soap with a clean cloth.
- After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening
the charge hose connector at the nitrogen
cylinder. When the system pressure is re-
duced to normal, disconnect the hose from
the cylinder.
*The feature can be changed according to a
type of model.
- Remove the caps from the 2-way and 3-way
valves.
- Remove the service-port cap from the 3-way
valve.
- Apply a soap water or a liquid neutral deter-
gent on the indoor unit connection or out-
door unit connections by a soft brush to
check for leakage of the connecting points of
the piping.
- If bubbles come out, the pipes have leakage
Lo
Hi
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
Pressure
gauge
Indoor unit
Soap water method
- Connect the charge hose end described in
the preceding steps to the vacuum pump to
evacuate the tubing and indoor unit.
Confirm the "Lo" knob of the pressure Gauge
is open. Then, run the vacuum pump.
The operation time for evacuation varies with
tubing length and capacity of the pump. The
following table shows the time required for
evacuation.
- When the desired vacuum is reached, close
the knob of the 3-way valve and stop the
vacuum pump.
Evacuation
Cap
2-way valve
(Close)
Gas side
Liquid side
3-way valve
(Close)
Required time for evacuation when 30 gal/h
vacuum pump is used
If tubing length is
less than 10m (33 ft)
If tubing length is
longer than 10m (33
ft)
10 min. or more
15 min. or more
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
Prepare remote controller
1
Remove the battery cover by pulling it ac-
cording to the arrow direction.
2
Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
NOTE
!
- Use 2 AAA(1.5volt) batteries. Do not use
rechargeable batteries.
- Remove the batteries from the remote
controller if the system is not used for a
long time
NOTE
!
- When Dry Contact Mode is operated,
WLAN Function can not be used.
- In Wi-Fi mode when you want to change to a dry
contact mode, normal operation after 3 minutes.
- Fix the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a con-
crete or rigid mount.
- When installing on the wall, roof or rooftop, anchor
the mounting base securely with a nail or wire as-
suming the influence of wind and earthquake.
- If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibra-
tion rubber.
Settlement of outdoor unit
Bolt
Tubing connection
4
Equipped with a WLAN module.
* The feature can be changed according to a
type of model.
* The feature can be changed according to a
type of model.
5
Close the front panel.
- Lift down both sides of the panel sloghtly
3
Reattach the cover by pushing it back into
position.
In case, to install the outdoor unit on the sea-
side, set up a windbreak not to be exposed to
the sea wind.
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.
CAUTION
- Air conditioners should not be installed
in areas where corrosive gases, such as
acid or alkaline gas, are produced.
- Do not install the product where it could
be exposed to sea wind (salty wind)
directly. It can result corrosion on the prod-
uct. Corrosion, particularly on the condens-
er and evaporator fins, could cause prod-
uct malfunction or inefficient performance.
- If outdoor unit is installed close to the sea-
side, it should avoid direct exposure to the
sea wind. Otherwise it needs additional anti-
corrosion treatment on the heat exchanger.
!
Sea wind
Sea wind
Sea wind
Windbreak
Selecting the location(Outdoor Unit)
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.
NOTE
!
- If you can’t meet above guide line in
the seaside installation, please con-
tact LG Electronics for the additional
anticorrosion.
- Periodic ( more than once/year )
cleaning of the dust or salt particles
stuck on the heat exchanger by using
water
* Do not use seawater you clean up
the heat exchanger
CAUTION
- Once the function is set up, heating and
automatic operation cannot be used
- Once the function is disable it will return
to its normal state
- Code cannot be entered when it is in opera-
tion mode. It must be OFF state to enter code
- Even if able to enter code in ON state, it won’t
function if the code is not entered in OFF state
- Considering the communication time of the
accessory built on the Air-conditioning, operate
the accessory approximately after 1 min.
- Entire lock or mode lock cannot be set if heating and
automatic operation is set through central controller
!
Installation guide at the seaside
- Preparation
Check that each tube(both liquid and gas
side tubes) between the indoor and outdoor
units have been properly connected and all
wiring for the test run has been completed.
Remove the service valve caps from both
the gas and the liquid side on the outdoor
unit. Note that both the liquid and the gas
side service valves on the outdoor unit are
kept closed at this stage.
- Leak test
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.
Air purging with vacuum pump
CAUTION
Be sure to use a manifold valve for air
purging. If it is not available, use a stop
valve for this purpose. The knob of the
3-way valve must always be kept close.
- Pressurize the system to maximum
250 P.S.I.G. (17.6kgf/cm
2
G) (R-22 model) or
400 P.S.I.G. (28.1kgf/cm
2
G) (R-410A model)
with dry nitrogen gas and close the cylinder
valve when the gauge reading reaches 250
P.S.I.G. (17.6kgf/cm
2
G) (R-22 model) or 400
P.S.I.G. (28.1kgf/cm
2
G) (R-410A model). Next
step is leak test with liquid soap.
!
CAUTION
To avoid nitrogen entering the refrigerant
system in a liquid state, the top of the
cylinder must be higher than its bottom
when you pressurize the system. Usually,
the cylinder is used in a vertical standing
position.
!
WARNING
There is a risk of fire and explo-
sion.
- Inert gas (nitrogen) should be
used when you check plumbing
leaks, cleaning or repairs of pipes etc.
If you are using combustible gases includ-
ing oxygen, product may have the risk of
fires and explosions.
!
Air Purging
The air and moisture remaining in the refriger-
ant system have undesirable effects as indi-
cated below.
- Pressure in the system rises.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze
and block capillary tubing.
- Water may lead to corrosion of parts in the
refrigeration system.
Therefore, after evacuating the system, take a
leak test for the piping and tubing between
the indoor and outdoor unit.
*The feature can be changed according a type
of model.
In cases where the outdoor unit is installed
above the Indoor unit perform the following.
1
Tape the piping and connecting cable from
down to up.
2
Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
3
Fix the piping onto the wall using saddle or
equivalent
Seal a small opening
around the pipings
with gum type sealant.
Trap
Trap
- With a service valve wrench, turn the valve of
liquid side counter-clockwise to fully open the
valve
- Turn the valve of gas side counter clockwise to
fully open the valve
- Loosen the charge hose connected to the gas
side service port slightly to release the pressure,
then remove the hose.
- Replace the flare nut and its bonnet on the gas
side service port and fasten the flare nut se-
curely with an adjustable wrench. This process
is very important to prevent leakage from the
system.
Outdoor unit
Lo
Hi
Manifold valve
Vacuum pump
Pressure
gauge
Open
Close
Indoor unit
Finishing the Job
- Replace the valve caps at both gas and liquid
side service valves and fasten them tight.
This completes air purging with a vacuum pump.
- Replace the pipe cover to the outdoor unit by
one screw
Now the air conditioner is ready for test run.
* The feature can be changed according to a type
of model.
Installation of WLAN Module
1
Turn off the power and unplug the power
cord.
2
Open the front cover.
- Lift up both sides of the cover slightly.
* The feature can be changed according to a
type of model.
3
Remove the WLAN Port Cap.
* The feature can be changed according to a
type of model.
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
- Measure the pressure of the gas side service valve.
- Measure the air temperature from inlet and
outlet of air conditiioner.
- Ensure the difference between the inlet and
outlet temperature is more than 8°C.
- For reference; the gas side pressure at opti-
mum condition is shown on table (cooling)
The air conditioner is now ready to use.
*The feature can be changed according to a type
of model.
This is performed when the unit is relocated
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant
into the outdoor unit without the loss of refrig-
erant.
- Connect a low-pressure gauge manifold hose to
the charge port on the gas side service valve.
- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.
- Close the liquid side service valve(all the way).
- Turn on the unit's operating switch and start
the cooling operation.
- When the low-pressure gauge reading becomes 1
to 0.5kg/cm
2
G(14.2 to 7.1 P.S.I.G.), fully close the
gas side valve and then quickly turn off the unit.
Now Pump Down procedure is completed, and all
refrigerant is collected into the outdoor unit.
Discharge
temperature
Discharge air
Inlet temperature
Refrigerant
Outside ambi-
ent TEMP.
The pressure of
the gas side
R-410A
35°C
8.5~9.5kg/cm
2
G(1
20~135 P.S.I.G.)
NOTE
!
If the actual pressure is higher than
shown, the system is most likely over-
charged, and charge should be removed.
If the actual pressure are lower than
shown, the system is most likely under-
charged, and charge should be added.
CAUTION
Be sure to perform Pump Down proce-
dure in the cooling mode.
!
Pump Down Procedure
Pump down
Evaluation of the performance
C/O switching function set up
C/O(Cooling Only) Mode
1
Supply power at Power-OFF state
2
Enter the Installer Code and set the code to 45
3
Press Power-ON button to select the code
No. 45 then, check if buzzer beeps
4
Turn off Power
5
Turn the power back on after 30 sec.
C/O switching function dis-
able set up
1
Supply power at Power-OFF state
2
Enter the Installer Code and set the code to 46
Press Power-ON button to select the code No.
46 and check if buzzer beeps.
3
Turn off Power
4
Turn the power back on after 30 sec.
* How to enter the installer mode
Press Reset Button and JET MODE Button
Piping Length and Elevation
Operation ranges
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
CAUTION
Capacity is based on standard length and maximum allowable length is on the basis of relia-
bility.
Additional refrigerant must be charged after 12.5 m (there is no need to charge till 12.5 m
based on reliability)
!
The table below indicates the temperature ranges the air conditioner can be Operated within.
Mode
Indoor temperature
Outdoor temperature
Cooling
18°C~30°C (64.4°F~86°F)
-10°C~48°C(14°F~118.4°F)
Heating
16°C~30°C(60.8°F~86°F)
-25°C~24°C(-13°F~75.2°F)
Capacity
(Btu/h)
Pipe Size
Standard
Length
m(ft)
Max.
Elevation
Ⓑ
m(ft)
Min
Length
Ⓐ
m(ft)
Max.
Length
Ⓐ
m(ft)
Additional Refriger-
ant for longer than
12.5m(41ft)
GAS
LIQUID
mm
inch
mm
inch
g/m
oz/ft
9k, 12k
Ø9.52
3/8
Ø6.35
1/4
7.5(25)
10(33)
2(6.6)
20(66)
20
0.22
9
8
10
11
