LG LA090HYV Installation Manual page 2

Forming the Piping
2 Do not make drain piping like the following.
In cases where the outdoor unit is installed
below the indoor unit perform the following.
1 Tape the piping, drain hose and connecting
Do not raise
cable from down to up.
2 Secure the tapped piping along the exterior
wall using saddle or equivalent.
Water
leakage
Seal small openings
around pipings with a
Accumulated
gum type sealant.
drain water
Air
Connecting cable
Saddle
Pipings
Water
Waving
leakage
Tip of drain hose
Drain hose
dipped in water
Water
leakage
Ditch
Less than
50mm gap
Trap is required to prevent water
from entering into electrical parts.
*The feature can be changed according a type
* The feature can be changed according to a
of model.
type of model.
In cases where the outdoor unit is installed Air purging with vacuum pump
above the Indoor unit perform the following.
1 Tape the piping and connecting cable from
- Preparation
down to up.
Check that each tube(both liquid and gas
2 Secure the taped piping along the exterior
side tubes) between the indoor and outdoor
wall. Form a trap to prevent water entering
units have been properly connected and all
the room.
wiring for the test run has been completed.
3
Fix the piping onto the wall using saddle or Remove the service valve caps from both
equivalent 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
Seal a small opening
kept closed at this stage.
around the pipings
- Leak test
with gum type sealant.
Connect the manifold valve(with pressure
gauges) and dry nitrogen gas cylinder to this
service port with charge hoses.
CAUTION
!
Trap
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
Trap
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
2
P.S.I.G. (17.6kgf/cm G) (R-22 model) or 400
2
P.S.I.G. (28.1kgf/cm G) (R-410A model). Next
*The feature can be changed according a type
step is leak test with liquid soap.
of model.
CAUTION
!
Air Purging
To avoid nitrogen entering the refrigerant
The air and moisture remaining in the refriger-
system in a liquid state, the top of the
ant system have undesirable effects as indi-
cylinder must be higher than its bottom
cated below.
when you pressurize the system. Usually,
- Pressure in the system rises.
the cylinder is used in a vertical standing
position.
- Operating current rises.
- Cooling(or heating) efficiency drops.
- Moisture in the refrigerant circuit may freeze WARNING
!
and block capillary tubing.
- Water may lead to corrosion of parts in the There is a risk of fire and explo-
refrigeration system. sion.
- Inert gas (nitrogen) should be
Therefore, after evacuating the system, take a
used when you check plumbing
leak test for the piping and tubing between
leaks, cleaning or repairs of pipes etc.
the indoor and outdoor unit.
If you are using combustible gases includ-
ing oxygen, product may have the risk of
fires and explosions.
- Do a leak test of all joints of the tubing(both Evacuation
indoor and outdoor) and both gas and liquid
side service valves.
- Connect the charge hose end described in
Bubbles indicate a leak. Be sure to wipe off
the preceding steps to the vacuum pump to
the soap with a clean cloth.
evacuate the tubing and indoor unit.
- After the system is found to be free of leaks,
Confirm the "Lo" knob of the pressure Gauge
relieve the nitrogen pressure by loosening
is open. Then, run the vacuum pump.
the charge hose connector at the nitrogen
The operation time for evacuation varies with
cylinder. When the system pressure is re-
tubing length and capacity of the pump. The
duced to normal, disconnect the hose from
following table shows the time required for
the cylinder.
evacuation.
Manifold valve
Indoor unit
Pressure
gauge
Lo Hi
Charge hose
2-way valve
Nitrogen gas
cylinder(in vertical (Close)
Taping
standing position)
Outdoor unit
*The feature can be changed according to a
type of model.
Soap water method
Required time for evacuation when 30 gal/h
- Remove the caps from the 2-way and 3-way
If tubing length is
valves.
less than 10m (33 ft)
- Remove the service-port cap from the 3-way
valve.
10 min. or more
- Apply a soap water or a liquid neutral deter-
gent on the indoor unit connection or out-
- When the desired vacuum is reached, close
door unit connections by a soft brush to
the knob of the 3-way valve and stop the
check for leakage of the connecting points of
vacuum pump.
the piping.
- If bubbles come out, the pipes have leakage
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.
- With a service valve wrench, turn the valve of
- Replace the pipe cover to the outdoor unit by
liquid side counter-clockwise to fully open the
one screw
valve
Now the air conditioner is ready for test run.
- Turn the valve of gas side counter clockwise to
* The feature can be changed according to a type
fully open the valve
of model.
- 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
Installation of WLAN Module
side service port and fasten the flare nut se-
curely with an adjustable wrench. This process 1
Turn off the power and unplug the power
is very important to prevent leakage from the
cord.
system.
2 Open the front cover.
- Lift up both sides of the cover slightly.
Indoor unit
* The feature can be changed according to a
type of model.
Outdoor unit
3 Remove the WLAN Port Cap.
Manifold valve
Pressure
gauge
Lo Hi
Open Close
* The feature can be changed according to a
Vacuum pump
type of model.
8
4 Equipped with a WLAN module.
* The feature can be changed according to a
type of model.
Liquid side
5
Close the front panel.
- Lift down both sides of the panel sloghtly
Gas side
Cap
3-way valve
(Close) * The feature can be changed according to a
type of model.
! NOTE
vacuum pump is used
If tubing length is
- When Dry Contact Mode is operated,
longer than 10m (33
WLAN Function can not be used.
ft)
15 min. or more - In Wi-Fi mode when you want to change to a dry
contact mode, normal operation after 3 minutes.
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.
Evaluation of the performance
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.
Inlet temperature
Discharge air
Outside ambi- The pressure of
Refrigerant
ent TEMP. the gas side
8.5~9.5kg/cm
R-410A 35°C
20~135 P.S.I.G.)
*The feature can be changed according to a type
of model.
!
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.
Pump down
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.
9
3 Reattach the cover by pushing it back into
!
position.
- 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
NOTE
! !
- Use 2 AAA(1.5volt) batteries. Do not use - Air conditioners should not be installed
in areas where corrosive gases, such as
rechargeable batteries.
acid or alkaline gas, are produced.
- Remove the batteries from the remote
- Do not install the product where it could
controller if the system is not used for a
be exposed to sea wind (salty wind)
long time 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-
Settlement of outdoor unit
side, it should avoid direct exposure to the
sea wind. Otherwise it needs additional anti-
corrosion treatment on the heat exchanger.
- Fix the outdoor unit with a bolt and
nut(ø10mm) tightly and horizontally on a con-
crete or rigid mount.
Selecting the location(Outdoor Unit)
- When installing on the wall, roof or rooftop, anchor
the mounting base securely with a nail or wire as-
If the outdoor unit is to be installed close to
suming the influence of wind and earthquake.
the seaside, direct exposure to the sea wind
- If the vibration of the unit is transmitted to
should be avoided. Install the outdoor unit on
the pipe, secure the unit with an anti-vibra-
the opposite side of the sea wind direction.
tion rubber.
Bolt
Tubing connection
Piping Length and Elevation
! CAUTION
Be sure to perform Pump Down proce-
dure in the cooling mode.
Capacity
(Btu/h)
Pump Down Procedure
9k, 12k
- 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
!
C/O(Cooling Only) Mode
Capacity is based on standard length and maximum allowable length is on the basis of relia-
C/O switching function set up
2 G(1 bility.
Additional refrigerant must be charged after 12.5 m (there is no need to charge till 12.5 m
1 based on reliability)
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
Operation ranges
5 Turn the power back on after 30 sec.
The table below indicates the temperature ranges the air conditioner can be Operated within.
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
10
CAUTION
Sea wind
In case, to install the outdoor unit on the sea-
side, set up a windbreak not to be exposed to
the sea wind.
Windbreak
Sea wind
CAUTION
- 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.
Select a well-drained place.
NOTE
!
- If you can't meet above guide line in
the seaside installation, please con-
tact LG Electronics for the additional
anticorrosion.
Sea wind
- 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
Additional Refriger-
Pipe Size
Standard Max. Min Max.
ant for longer than
GAS LIQUID Length Elevation Length Length
12.5m(41ft)
Ⓑ m(ft) Ⓐ m(ft) Ⓐ m(ft)
m(ft)
mm inch mm inch g/m oz/ft
Ø9.52 3/8 Ø6.35 1/4 7.5(25) 10(33) 2(6.6) 20(66) 20 0.22
Indoor unit
Outdoor unit
A
A
B Indoor unit
Outdoor unit
B
CAUTION
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)
11