Piping Diagrams
4.2.1 Cooling Operation
IM FAN
INV
: Inverter compressor
CON
: Constant speed compressor
EEV
: Linear Expansion Valve
O/S
: Oil Separator
Accum. : Accumulator
Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Heat Exchanger
Fan
lndoor unit
IM FAN
O/S
INV
Liquid Injection
:High temperature / High pressure gas
:High temperature / High pressure liquid
:Low temperature / Low pressure gas
EEV
Filter
Filter
H/G
O/S
CON
Accum.
- 186 -
Heat Exchanger
EEV
Filter
Fan
Filter
lndoor unit
Gas pipe
Liquid pipe
Pressure sensor
Pressure switch
Check valve
EEV
Thermistor
S
Solenoid valve
Service valve
Strainer
LGE Internal Use Only