Indoor unit
4. Piping Diagrams
Ceiling Concealed Duct(Middle Static)
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9
Indoor Units
Heat Exchanger
Sirocco Fan
Th3
Th1
Th2
lndoor unit
EEV
:Heating
:Cooling
Filter
Filter
Refrigerant pipe connection port diameter
MODEL GAS LIQUID
ARNU07GM1A4 Ø12.7(1/2) Ø6.35(1/4)
ARNU09GM1A4 Ø12.7(1/2) Ø6.35(1/4)
ARNU12GM1A4 Ø12.7(1/2) Ø6.35(1/4)
ARNU15GM1A4 Ø12.7(1/2) Ø6.35(1/4)
ARNU18GM1A4 Ø12.7(1/2) Ø6.35(1/4)
ARNU24GM1A4 Ø15.88(5/8) Ø9.52(3/8)
ARNU28GM2A4 Ø15.88(5/8) Ø9.52(3/8)
ARNU36GM2A4 Ø15.88(5/8) Ø9.52(3/8)
ARNU42GM2A4 Ø15.88(5/8) Ø9.52(3/8)
ARNU48GM3A4 Ø15.88(5/8) Ø9.52(3/8)
ARNU54GM3A4 Ø19.05(3/4) Ø9.52(3/8)
[Unit: mm(inch)]
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)