2. Specifications
Ceiling Concealed Duct (High Sensible)
_ 3
Indoor Units
Notes:
1. Capacities are based on the following conditions:
    Cooling    • Indoor temp. 27°C[80.6°F]DB/ 19°C[66.2°F]WB
                    • Outdoor temp. 35°C[95°F]DB/ 24°C[75.2°F]WB
                    • Interconnecting Piping Length 7.5m
                    • Level Difference of Zero
    Heating   • Indoor temp. 20°C[68°F]DB/ 15°C[59°F]WB
                    • Outdoor temp. 7°C[44.6°F]DB/ 6°C[42.8°F]WB
                    • Interconnecting Piping Length 7.5m
                    • Level Difference of Zero
2. Capacities are net capacities
3. Due to our policy of innovation some specifications may be changed without prior notification
4. Wiring cable size must comply with the applicable local and national codes. And “Electric characteristics” chapter
should be considered for electrical work and design. Especially the power cable and circuit breaker should be
selected in accordance with that.
5. EEV : Electronic Expansion Valve
6. Sound pressure levels are measured at 50Pa External Static Pressure condition.
7. Anechoic chamber conversion value is measured at 1.5 m downward from unit centre. 
The values depends on the ambient conditions and values are normally higher in actual operation.
Conversion Formula
kcal/h= kW x 860
Btu/h = kW x 3412
cfm = m
3
/min x 35.3
l/s = CMM x 1000/60 
 Type
 Model                               Unit
                                                                       kW
 Cooling Capacity                                         kcal/h
                                                                      Btu/h
                                                                       kW
 Heating Capacity                                         kcal/h
                                                                      Btu/h
 Casing  
 
Dimensions(WxHxD)
 
Body
                                 mm
                                                                       inch
 
Coil
 
Rows x Columns x FPI
 
                             Face Area                          m
2
                             Type  
 
Motor Output x Number           
W
                             Running Current                 A
 
Air Flow Rate(H / M / L)
       CMM
 
(High Mode-factory set)
        cfm
 Fan  
External Static Pressure
 mmAq(Pa)
 
Air Flow Rate(H / M / L)
       CMM
                             (Standard Mode)               cfm
 
External Static Pressure
 mmAq(Pa)
                             Drive  
                             Motor type  
 Temperature Control  
 Sound Absorbing Thermal Insulation Material
 Air Filter
 Safety Device  
 
 
Liquid Side                    mm(inch)
 
Pipe Connections
  Gas Side                       mm(inch)
 
Drain Pipe(Internal Dia.)
     mm(inch)
 Net Weight                                                  kg(lbs)
 
Noise Level
(Sound Pressure, 1.5m, H / M / L)
       dB(A)
 Power Supply                                            Ø, V, Hz
 Refrigerant Control 
 Transmission cable                                      mm
2
Ceiling Concealed Duct - High Sensible
       ARNU15GBGA4                ARNU18GBRA4                ARNU24GBRA4
                  4.5                                                                                 7.1
                3,900                                                                             6,100
               15,400                                                                           24,200
                   5                                                                                  8.0
                4,300                                                                             6,900
               17,100                                                                           27,300
  Galvanized Steel Plate                                                 Galvanized Steel Plate
      1,182 x 298 x 450                                                         1,230 x 590 x 380
 46-17/32 x 11-23/32 x 17-23/32                                                               48-7/16 x 14-31/32 x 23-7/32
            3 x 12 x 21                                                                    3 x 16 x 19
                 0.26                                                                               0.38
           Sirocco Fan                                                                   Sirocco Fan
                 350                                                                             185 x 2
                 2.65                                                                               2.40
        13.8 / 11.8 / 8.3                                                            34.2 / 29.1 / 24.0
        487 / 417 / 293                                                           1,208 / 1,027 / 847
                8(78)                                                                             8(78)
        13.5 / 12.1 / 9.0                                                            35.9 / 31.7 / 27.4
        477 / 427 / 318                                                           1,269 / 1,119 / 969
                6(59)                                                                             6(59)
                Direct                                                                            Direct
                BLDC                                                                            BLDC
  Microprocessor, Thermostat for cooling and heating                                                                                                Microprocessor, Thermostat for cooling and heating
     Foamed polystrene                                                       Foamed polystrene
                    -                                                                                     -
                Fuse                                                                              Fuse
            Ø9.52(3/8)                                                                     Ø9.52(3/8)
           Ø15.88(5/8)                                                                   Ø15.88(5/8)
                25(1)                                                                             25(1)
              38(83.8)                                                                         53(117)
           33 / 32 / 31                                                                    44 / 43 / 42
         1, 220-240, 50                                                               1, 220-240, 50
            1, 220, 60                                                                      1, 220, 60
                 EEV                                                                               EEV
   CVV-SB 1.0~1.5 x 2C                                                      CVV-SB 1.25 x 2C
5.6
4,800
19,100
6.3
5,400
21,500
Galvanized Steel Plate
1,230 x 590 x 380
48-7/16 x 14-31/32 x 23-7/32
3 x 16 x 19
0.38
Sirocco Fan
185 x 2
2.4
29.1 / 24.0 / 19.2
1,027 / 847 / 678
8(78)
31.7 / 27.4 / 23.2
1,119 / 969 / 819
6(59)
Direct
BLDC
Microprocessor, Thermostat for cooling and heating  
Foamed polystrene
-
Fuse
Ø9.52(3/8)
Ø15.88(5/8)
25(1)
53(117)
43 / 42 / 41
1, 220-240, 50
1, 220, 60
EEV
CVV-SB 1.25 x 2C