LG ATNH126ELFC Service Manual page 102

Piping Diagrams
2. AUUH728C
"Synchro" Duo - AUUH728C
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
"Synchro" Trio - AUUH728C
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
INDOOR UNIT
Heat
Exchanger
Fan
Thermistor
102 Synchro Air Conditioner
Gas Piping
Ø B
Liquid Piping
Ø A
Branch kit
(Accessory)
Service Valve
Gas(Ø 25.4mm)
Service Valve
Liquid(Ø 9.52mm)
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.
Gas Piping
Ø B
Liquid Piping
Ø A
Branch kit
(Accessory)
Gas
Piping
Service Valve
Ø B
Gas(Ø 25.4mm)
Liquid Piping
Ø A
Service Valve
Liquid(Ø 9.52mm)
Branch kit
(Accessory)
Note :
Gas Piping
1.The pipes between the indoor units and the branch kits must have
Ø B
Liquid Piping
Ø A
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)
30k, 36k 6.35 15.88
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
24 k, 30k, 36k 6.35 15.88
same dimensions as indoor unit connections.
OUTDOOR UNIT
Heat
Exchanger
Check
Valve
Fan
Thermistor
Constant
Compressor 3
L.E.V.
Refrigerant Flow
Cooling
Heating
OUTDOOR UNIT
Heat
Exchanger
Check
Valve
Fan
Thermistor
Constant
Compressor 3
L.E.V.
Refrigerant Flow
Cooling
Heating