LG Multi IV Engineering Manual page 67

Oil Return and Defrost
Operation
Indoor Heat Exchanger
M
Fan
Outdoor
Temperature
M Fan
Sensor
Outdoor unit
HEX Temperature
Sensor
Lower HEX
Hot Vapor Valve
Upper HEX
Hot VaporValve
Upper
Lower
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
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
Temperature
Accum
Sensor
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
Comp2
Discharge
Temperature
Sensor
Inverter
Inverter
Oil
Comp1 Comp2
Balance
Check Valve
EEV
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
PRODUCT DATA | 67