Piping Diagrams; Indoor Unit; Outdoor Unit - LG LSN090HSV4 Svc Manual

2. Piping Diagrams

LS090HSV4 (AS-W09GB1B0), LS120HSV4 (AS-W12GB1B0), LA090HSV4 (AS-W09GBRB0),
LA120HSV4 (AS-W12GBRB0)

Indoor Unit

Th2
Th1
Heat
Exchanger
(Evaporator) Th3
Th4
Th5
LOC.
Th1 Thermistor for indoor air temperature
Th2 Thermistor for evaporator inlet temperature
Th3 Thermistor for evaporator middle temperature
Th4 Thermistor for evaporator outlet temperature
Th5 Water Level Sensor (Option)
Th6 Thermistor for outdoor air temperature
Th7 Thermistor for condensing temperature
Th8 Thermistor for discharge pipe temperature
※ EEV : Electronic Expansion Valve
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Only for training and service purposes
FIELD PIPIN G
(Ø 1/4" Copper Tubing)
Liquid Side
M
FIELD PIPIN G
(Ø 3/8" Copper Tubing)
Gas Side
Description

Outdoor Unit

2-Way Valve
EEV
3-Way Valve
Accumulator
Compressor
- 5 -
Th6
Heat
M
Exchanger
(Condenser)
Reversing
Th7
Valve
Th8
: Cooling
: Heating
PCB Connector
CN-TH1 (Indoor)
CN-TH2 (Indoor)
CN-TH3 (Indoor)
CN-TH1 (Outdoor)
CN-TH2 (Outdoor)
LGE Internal Use Only