LG Multi IV Engineering Manual page 68

REFRIGERANT FLOW DIAGRAMS
Indoor Heat Exchanger
M
Fan
Outdoor
Fan
M
Temperature
Sensor
Active Path
Outdoor Unit
HEX Temperature
Sensor
Lower HEX
Hot Vapor Valve
Upper HEX
Hot Vapor Valve
Upper
Low
Outdoor
Outdoor
EEV
EEV
Sub-cooling Circuit
Outlet Temperature
Sensor
Sub-cooling Circuit
Inlet Temperature
Sensor
*8 ton and 10 ton units have 2 fans.
**Active path: The refrigerant circuit(s) of an outdoor unit coil that provide(s) continuous heating capacity during split coil defrost operation.
Press ure Sensor
Remarks
Press ure Switch
68 | PRODUCT DATA
Electronic
Expansion Valve
M
High Pressure
Sensor
4-Way Valve
SC Suction
Suction
Temperature
Sensor
Low
Pressure
Sensor
Accum
Receiver
Receiver
Outlet
Oil Return
Receiver
Inlet
Sub-cooling HEX
Sub-cooling
Temperature Sensor
SVC Valve
©
Indoor Heat Exchanger
Electronic
Expansion Valve
M
Fan
High Temperature High Pressure Vapor
High Temperature High Pressure Liquid
Low Temperature Low Pressure Vapor
Pressure
Switch
Oil Oil
Separ Separ
Comp1
-ator -ator
Vapor
Injection
Comp1
Comp2
Discharge
Discharge
Temperature
Temperature
Sensor
Sensor
Inverter Inverter
Oil
Comp1 Comp2
Balance
Check Valve
EEV
Operation
Charging Port
Vapor Pipe
Liquid Pipe
Liquid Pipe
Temperature
Sensor
Comp2
Vapor
Injection
ARUN145BTE4/145DTE4,
ARUN169BTE4/169DTE4
frames are ONLY for use in
large capacity triple frame
combinations. They cannot be
used as stand alone models
or in a dual frame combina-
tion. These frames ARE
NOT interchangeable with
ARUN144BTE4/144DTE4,
ARUN168BTE4/168DTE4
single frame models.
Soleno id Valve
Strainer