LG TS-H076JSA0 / S07LHK Service Manual ▷ View online
ENGLISH
11
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
individually 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 above circuit diagram is subject to change without notice.
When installing, refer to the circuit diagram on the control box inside Indoor Uint.
individually 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 above circuit diagram is subject to change without notice.
When installing, refer to the circuit diagram on the control box inside Indoor Uint.
CONNECTING THE CABLE BETWEEN INDOOR UNIT AND OUTDOOR UNIT
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
• The above circuit diagram is subject to change
without notice.
• Be sure to connect wires according to the wiring
diagram.
• Connect the wires firmly, so that not to be pulled
out easily.
• Connect the wires according to color codes by
referring the wiring diagram.
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).
• 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.
7k~14k
18k
24k~28k
30k, 32k
36k, 38k
1.0
1.5
2.5
2.5
5.5
Unit(A)
Indoor
Indoor
Indoor
Outdoor
Outdoor
Cable Type(B) H05VV-F H05VV-F H05VV-F H05RN-F H05RN-F
NORMAL CROSS
-SECTIONAL AREA
Grade
7k~14k
18k
24k~28k
1.0
1.5
2.5
Cable Type(B) 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
CAUTION
12
Connect the cable to the
outdoor unit
outdoor unit
Remove the control cover from the unit by
loosening the screw.
Connect the wires to the terminals on the
control board individually.
loosening the screw.
Connect the wires to the terminals on the
control board individually.
Secure the cable onto the control board with
the cord clamp.
the cord clamp.
Refix the control cover to the original
position with the screw.
position with the screw.
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.
A
B
C
D
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 wiring, be guided by the circuit diagram posted on the inside of control
cover.
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.)
transportation. Check them and make 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
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 11))
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.
conductors.
Outdoor Unit
7k~14k
18k
24k~26k 28k, 30k, 36k, 38k
15
15
20
30
Circuit
Breaker
(A)
Grade
CAUTION
CHECKING THE DRAINAGE AND FORMING THE PIPINGS
13
ENGLISH
Form the piping
Form the piping by wrapping the
connecting portion of the indoor unit with
insulation material and secure it with two
kinds of vinyl tapes.
connecting portion of the indoor unit with
insulation material 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.
hose, the end of the drain outlet should be
routed above the ground. Secure the drain
hose appropriately.
In cases where the outdoor unit is
installed below the indoor unit perform
the following.
installed below the indoor unit perform
the following.
■
Tape the piping, drain hose and
connecting cable from down to up.
connecting cable from down to up.
■
Secure the tapped piping along the exterior
wall using saddle or equivalent.
wall using saddle or equivalent.
A
A
B
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.
In cases where the Outdoor unit is
installed above the Indoor unit perform
the following.
installed above the Indoor unit perform
the following.
■
Tape the piping and connecting cable from
down to up.
down to up.
■
Secure the taped piping along the exterior
wall. Form a trap to prevent water entering
the room.
wall. Form a trap to prevent water entering
the room.
■
Fix the piping onto the wall by saddle or
equivalent.
equivalent.
C
Seal a small opening
around the pipings
with gum type sealer.
around the pipings
with gum type sealer.
Trap
Trap
Checking the drainage
To remove the front panel from the indoor
unit.
unit.
■
Set the air direction louvers up-and-down
to the position(horizontally) by hand.
to the position(horizontally) by hand.
■
Remove the securing screws that retain the
front panel. Pull the lower left and right
sides of the grille toward you and lift it off.
front panel. Pull the lower left and right
sides of the grille toward you and lift it off.
Pull the right and
the left side.
the left side.
To check the drainage.
■
Pour a glass of water on the evaporator.
■
Ensure the water flows through the drain
hose of the indoor unit without any leakage
and goes out the drain exit.
hose of the indoor unit without any leakage
and goes out the drain exit.
B
Drain piping
■
The drain hose should point downward for
easy drain flow.
easy drain flow.
C
■
Do not make drain piping.
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
14
AIR PURGING
Air purging
Air and moisture remaining in the refrigerant
system have undesirable effects as indicated
below.
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 capillary tubing.
freeze and block capillary tubing.
■
Water may lead to corrosion of parts in the
refrigeration system.
refrigeration system.
Therefore, the indoor unit and tubing between
the indoor and outdoor unit must be leak tested
and evacuated to remove any noncondensables
and moisture from the system.
the indoor and outdoor unit must be leak tested
and evacuated to remove any noncondensables
and moisture from the system.
Air purging with vacuum
pump
pump
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.
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.
gauges) and dry nitrogen gas cylinder to
this service port with 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.
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.
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
A
B
■
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.
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 reduced to normal,
disconnect the hose from the cylinder.
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.
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.
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.
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.
CAUTION
CAUTION
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