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4. Piping Diagrams
Indoor unit
6
_
Ceiling Concealed Duct(Low Static)
Indoor Units
Heat Exchanger
Sirocco Fan
Th3
Th1
Th2
lndoor unit
EEV
:Heating
:Cooling
Filter
Filter
Refrigerant pipe connection port diameter
[Unit: mm(inch)]
MODEL
GAS
LIQUID
ARNU05GL1G4
Ø12.7(1/2)
Ø6.35(1/4)
ARNU07GL1G4
Ø12.7(1/2)
Ø6.35(1/4)
ARNU09GL1G4 Ø12.7(1/2)
Ø6.35(1/4)
ARNU12GL2G4
Ø12.7(1/2)
Ø6.35(1/4)
ARNU15GL2G4
Ø12.7(1/2)
Ø6.35(1/4)
ARNU18GL2G4
Ø12.7(1/2)
Ø6.35(1/4)
ARNU21GL3G4 Ø15.88(5/8)
Ø9.52(3/8)
ARNU24GL3G4
Ø15.88(5/8)
Ø9.52(3/8)
LOC.
Description
PCB Connector (Color)
Th1
Thermistor for room air temperature
CN-ROOM (Yellow)
Th2
Thermistor for pipe in temperature
CN-PIPE_IN (White)
Th3
Thermistor for pipe out temperature
CN-PIPE_OUT (Red)