LG LS-H096PDC0 Service Manual ▷ View online
-25-
3. Connecting The Cable Between Indoor Unit and Outdoor Unit
1) Connect the cable to the Indoor unit.
• Connect the cable to the indoor unit by connecting the wires to the terminals on the control board in
dividually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and
the terminal No. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
the terminal No. are the same as those of the indoor unit.)
The earth wire should be longer than the common wires.
Air
Conditioner
Main power source
If a power plug is not to be used, provide a circuit breaker
between power source and the unit as shown below.
between power source and the unit as shown below.
Circuit Breaker
Use a circuit
breaker or time
delay fuse.
Use a circuit
breaker or time
delay fuse.
CAUTION
CAUTION
The power cord connected to the "A" unit should be
complied with the following specifications
(Type "B" approved by HAR or SAA).
complied with the following specifications
(Type "B" approved by HAR or SAA).
5k~9k 12k~14k
18k
24k~28k 30k, 32k 36k, 38k
0.75
1.0
1.5
2.5
2.5
5.5
Unit(A)
Indoor
Indoor
Indoor
Indoor Outdoor Outdoor
Cable Type(B) H05VV-F H05VV-F H05VV-F H05VV-F H05RN-F H05RN-F
NORMAL CROSS
-SECTIONAL AREA
Grade
5k~9K 12k~14k
18k
24k~28k
0.75
1.0
1.5
2.5
Cable Type(B) H07RN-F H07RN-F H07RN-F H07RN-F
NORMAL
CROSS
-SECTIONAL
AREA
Grade
30k, 32k
36k, 38k
0.75
0.75
Cable Type(B) H07RN-F H07RN-F
NORMAL CROSS
-SECTIONAL AREA
Grade
(mm
2
)
(mm
2
)
(mm
2
)
The power connecting cable connected to the indoor
and outdoor unit should be complied with the following
specifications
(Type "B" approved by HAR or SAA).
and outdoor unit should be complied with the following
specifications
(Type "B" approved by HAR or SAA).
NORMAL
CROSS-SECTIONAL
AREA 0.75mm
CROSS-SECTIONAL
AREA 0.75mm
2
• The above circuit diagram is subject to change with-
out notice.
• Be sure to connect wires according to the wiring dia-
gram.
• Connect the wires firmly, so that not to be pulled out
easily.
• Connect the wires according to color codes by refer-
ring the wiring diagram.
CAUTION
• When installing, refer to the circuit diagram on the
Control Box of Indoor Unit.
• When installing, refer to the wiring diagram on the
Control Cover Inside Outdoor Unit.
-26-
2) Connect the cable to the outdoor unit
1. Remove the control cover from the unit by loos-
ening the screw.
Connect the wires to the terminals on the control
board individually.
Connect the wires to the terminals on the control
board individually.
2. Secure the cable onto the control board with the
cord clamp.
3. Refix the control cover to the original position
with the screw.
4. Use a recognized circuit breaker "A"
between the power source and the unit.
A disconnecting device to adequately disconnect
all supply lines must be fitted.
A disconnecting device to adequately disconnect
all supply lines must be fitted.
Terminal block
Over 5mm
Cover control
Connecting cable
Connecting cable
After the confirmation of the above conditions, prepare the wiring as follows:
1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of
1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of
wiring, be guided by the circuit diagram posted on the inside of control cover.
2) The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from
vibrations to which the unit is subjected during the course of transportation. Check them and make
sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
3) Specification of power source.
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on
4) Confirm that electrical capacity is sufficient.
5) See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on
the name plate.
6) Confirm that the cable thickness is as specified in the power source specification.
(Particularly note the relation between cable length and thickness. (Refer to page 26)
7) Always install an earth leakage circuit breaker in a wet or moist area.
8) The following would be caused by voltage drop.
8) The following would be caused by voltage drop.
• Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal
function of the overload.
9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an
air gap contact separation of at least 3mm in each active(phase) conductors.
Outdoor Unit
CAUTION
7k~14k
18k
24k~28k 30k, 32k 36k, 38k
15
20
30
30
40
Circuit
Breaker
(A)
Grade
-27-
4. checking the Drainage and forming the pipings
1) Checking the drainage
1. To check the drainage.
• Pour a glass of water on the evaporator.
• Ensure the water flows through the drain hose of the
• Ensure the water flows through the drain hose of the
indoor unit without any leakage and goes out the
drain exit.
drain exit.
2. Drain piping
• The drain hose should point downward for easy drain
flow.
• Do not make drain piping.
2) Form the piping
1. Form the piping by wrapping the connecting por-
tion of the indoor unit with insulation material
and secure it with two kinds of vinyl tapes.
and secure it with two kinds of vinyl tapes.
• If you want to connect an additional drain hose, the
end of the drain outlet should be routed above the
ground. Secure the drain hose appropriately.
ground. Secure the drain hose appropriately.
2. In cases where the outdoor unit is installed
below the indoor unit perform the following.
• Tape the piping, drain hose and connecting cable
from down to up.
• Secure the tapped piping along the exterior wall
using saddle or equivalent.
3. In cases where the Outdoor unit is installed
above the Indoor unit perform the following.
• Tape the piping and connecting cable from down to
up.
• Secure the taped piping along the exterior wall. Form
a trap to prevent water entering the room.
• Fix the piping onto the wall by saddle or equivalent.
Taping
Drain
hose
hose
Pipings
Connecting
cable
cable
Trap is required to prevent water
from entering into electrical parts.
from entering into electrical parts.
Seal small openings
around pipings with a
gum type sealer.
around pipings with a
gum type sealer.
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
Downward slope
Do not raise
Accumulated
drain water
drain water
Tip of drain hose
dipped in water
dipped in water
Air
Waving
Water
leakage
leakage
Water
leakage
leakage
Ditch
Less than
50mm gap
50mm gap
Water
leakage
leakage
-28-
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.
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.
1) Air purging
Air and moisture remaining in the refrigerant system
have undesirable effects as indicated below.
• Pressure in the system rises.
• Operating current rises.
• Cooling(or heating) efficiency drops.
• Moisture in the refrigerant circuit may freeze and block
have undesirable effects as indicated 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 refrigera-
tion system.
Therefore, the indoor unit and tubing between the
indoor and outdoor unit must be leak tested and evacu-
ated to remove any noncondensables and moisture
from the system.
indoor and outdoor unit must be leak tested and evacu-
ated to remove any noncondensables and moisture
from the system.
2) Air purging with vacuum pump
1. Preparation
• Check that each tube(both liquid and gas side tubes)
• Check that each tube(both liquid and gas side tubes)
between the indoor and outdoor units have been prop-
erly 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.
erly 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.
2. Leak test
• Connect the manifold valve(with pressure gauges)
• Connect the manifold valve(with pressure gauges)
and dry nitrogen gas cylinder to this service port with
charge hoses.
charge hoses.
• Pressurize the system to no more than 150 P.S.I.G.
with dry nitrogen gas and close the cylinder valve
when the gauge reading reached 150 P.S.I.G. Next,
test for leaks with liquid soap.
when the gauge reading reached 150 P.S.I.G. Next,
test for leaks with liquid soap.
• 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.
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 reduced to normal, disconnect the hose
from the cylinder.
connector at the nitrogen cylinder. When the system
pressure is reduced to normal, disconnect the hose
from the cylinder.
Lo
Hi
Indoor unit
Outdoor unit
Manifold valve
Charge hose
Nitrogen gas
cylinder(in vertical
standing position)
cylinder(in vertical
standing position)
Pressure
gauge
gauge
5. Air Purging
Be sure to use a manifold valve for air purging. If it is
not available, use a stop valve for this purpose. The
"Hi" knob of the manifold valve must always be kept
close.
not available, use a stop valve for this purpose. The
"Hi" knob of the manifold valve must always be kept
close.
CAUTION
CAUTION
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