LG Multi IV Engineering Manual page 65

Cooling Mode
Indoor Heat Exchanger
M
Fan
Outdoor
Temperature
Fan
M
Sensor
Outdoor Unit
HEX Temperature
Sensor
Lower HEX
Hot Vapor Valve
Upper HEX
Hot Vapor Valve
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.
REFRIGERANT FLOW DIAGRAMS
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
©
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
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.
PRODUCT DATA | 65