LG Multi IV Engineering Manual page 69

Operation
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
REFRIGERANT FLOW DIAGRAMS
Electronic
Expansion Valve
M
High Pressure
Sensor
4-Way Valve
SC Suction
Suction
Temperature
Sensor
Low
Comp1
Pressure
Discharge
Sensor
Accum Temperature
Sensor
Oil
Receiver
Receiver Balance
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
Comp2
Discharge
Temperature
Sensor
Inverter Inverter
Comp1 Comp2
Check Valve
EEV
Charging Port
Vapor Pipe
Liquid Pipe
Liquid Pipe
Temperature
Sensor
ARUN145BTE4/145DTE4,
Comp2
ARUN169BTE4/169DTE4
Vapor
frames are ONLY for use in
Injection
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
PRODUCT DATA | 69