LG LP-E5082HA_HL Service Manual ▷ View online
– 11 –
Outdoor Unit
Deice Control
Outdoor Fan Speed Control
Sensing Heat Exchanger Temperature
Sensing Discharge Pressure For Compressor
• De-ice PCB
• One speed
• Heat exchanger temperature sensor (Thermistor)
• Discharge pressure sensor (High Pressure Switch)
– 35 –
6.1 Installation of indoor, Outdoor Unit
1) Select the best location
¥L
Indoor unit
• There should not be any heat source or steam near
the unit.
• There should not be any obstacles to prevent the air
circulation.
• The place where air circulation in the room will be
good.
• The place where drainage can be easily obtained.
• The place where noise prevention is taken into
• The place where noise prevention is taken into
consideration.
• Do not install the unit near the door way.
• Ensure the space indicated by arrows from the wall,
• Ensure the space indicated by arrows from the wall,
ceiling, fence, or the obstacles.
¥M
Outdoor unit
• If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat
radiation from the condenser is not restricted.
radiation from the condenser is not restricted.
• There should not be any animals or plants which
could be affected by discharged hot air.
• Ensure the space indicated by arrows from the wall,
ceiling, fence, or other obstacles.
¥N
Piping length and the elevation.
6. INSTALLATION
MODEL
MAX. Piping length
A (m)
3HP
10
5
5HP
15
7
8HP
40
25
MAX.
elevation
B (m)
A
B
Indoor unit
Outdoor unit
Wall
More
than
50cm
than
50cm
More than
50cm
50cm
More than
50cm
50cm
More than
100cm
100cm
Outdoor
unit
unit
5cm
5cm
40cm
100cm
Indoor unit
Outdoor unit
To indoor unit
Hexagonal wrench
Service port cap
3-way valve cap
(gas side)
(gas side)
3-way valve cap
(liquid side)
(liquid side)
No leakage found
leakage found
leakage ceased
leakage ceased
leakage persists
To open 3-way(liquid side) valve again,
turn the valve stem counter-clockwise
until it stops.
turn the valve stem counter-clockwise
until it stops.
To purge the air, push the pin on the service port
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
• Repeat this three times.
• Re-tighten the connecting portion with
torque wrenches.
locate a repair leak
Result
5
6
6.7 Air Purging of the Piping and
Indoor Unit
1) Air purging
The air which contains moisture and remains in the
Refrigeration cycle may cause a malfunction on the
compressor.
Refrigeration cycle may cause a malfunction on the
compressor.
¤
Remove the caps from the 3-way(liquid side) and
3-way(gas side) valves.
3-way(gas side) valves.
¤Ł
Remove the service-port cap from the 3-way
(gas side) valve.
(gas side) valve.
¤Ø
To open the valve, turn the valve stem of 3-way
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
¤Œ
Check the gas-leakage of the connecting port of
the pipings.
the pipings.
– 44 –
¤
Set the both 3-way(liquid side) and 3-way(gas side) valves to open position with the hexagonal wrench
for the unit operation.
for the unit operation.
¤
Checking the gas leakage for the left piping.
• Connect the manifold gauge to the service port of 3-way(gas side) valve.
Measure the pressure.
• Keep it for 5 - 10 minutes.
Ensure if the pressure indicated on the gauge is as same as that measured at first time.
– 45 –
CLOSED
CLOSED
Closed
Closed
Indoor unit
Outdoor unit
Liquid side
Gas side
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