LG ATNH126ELFC Service Manual page 103

"Synchro" Quartet - AUUH728C
INDOOR UNIT
Heat
Exchanger
Fan
Thermist
or
INDOOR UNIT
Heat
Exchanger
Fan
Thermist
or
INDOOR UNIT
Heat
Exchanger
Fan
Thermist
or
INDOOR UNIT
Heat
Exchanger
Fan
Thermist
or
3. AUUH1008C
"Synchro" Duo - AUUH1008C
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
Gas
Piping
ØB
Liquid
Piping
Ø A
Branch kit
(Accessory)
Gas
Piping
Ø B
Liquid
Piping
Ø A
Service Valve
Gas(Ø 25.4mm)
Gas
Piping
Ø B
Service Valve
Liquid(Ø 9.52mm)
Liquid
Piping
Branch kit
Ø A
(Accessory)
Note :
1.The pipes between the indoor units and the branch kits must have
Gas Piping
same dimensions as indoor unit connections.
Ø B
Liquid Piping
Ø A
Gas Piping
Ø B
Liquid Piping
Ø A
Branch kit
(Accessory)
Service Valve
Gas(Ø 25.4mm)
Service Valve
Liquid(Ø 12.7mm)
Branch kit
(Accessory)
Gas Piping
Ø B
Liquid Piping
Ø A
Note :
1.The pipes between the indoor units and the branch kits must have
same dimensions as indoor unit connections.
Reversing
Valve
Thermistor
High
Pressure
Low S/W
Pressure
S/W
Check Check
Valve Valve
Thermistor
Accumulator
Constant Constant
Compressor 1
Compressor 2
Indoor Unit A B
(Btu/h) (mm) (mm)
18k 6.35 12.7
Reversing
Valve
Thermistor
High
Pressure
Low S/W
Pressure
S/W
Check Check
Valve Valve
Thermistor
Accumulator
Constant Constant
Compressor 1 Compressor 2
Indoor Unit A B
(Btu/h) (mm) (mm)
36k 6.35 15.88
48 k, 60k 9.52 19.05
Piping Diagrams
OUTDOOR UNIT
Heat
Exchanger
Check
Valve
Fan
Thermistor
Constant
Compressor 3
L.E.V.
Refrigerant Flow
Cooling
Heating
OUTDOOR UNIT
Heat
Exchanger
Fan
Thermistor
L.E.V.
Refrigerant Flow
Cooling
Heating
Service Manual 103