Refrigerant pipe connection port diameter
                                        MODEL                                                    GAS                    LIQUID
      ARNU07GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)            Ø12.7(1/2)            Ø6.35(1/4)
      ARNU09GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)            Ø12.7(1/2)            Ø6.35(1/4)
      ARNU12GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)            Ø12.7(1/2)            Ø6.35(1/4)
      ARNU15GB3G4+PBSGB30(Acc'y), PBSC30(Acc'y)            Ø12.7(1/2)            Ø6.35(1/4)
      ARNU18GB4G4+PBSGB40(Acc'y), PBSC40(Acc'y)            Ø12.7(1/2)            Ø6.35(1/4)
      ARNU24GB4G4+PBSGB40(Acc'y), PBSC40(Acc'y)           Ø15.88(5/8)           Ø9.52(3/8)
[Unit: mm(inch)]
4. Piping Diagrams
Indoor Units
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)