4 _ Ceiling Concealed Duct(Low Static)
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.
4. EEV : Electronic Expansion Valve
5. Sound pressure levels are measured at 20Pa External Static Pressure condition.
6. 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 (Low Static)
              ARNU21GL3G4                                        ARNU24GL3G4
 6.2                                                             7.1
                       5,300                                                         6,100
                      21,000                                                       24,000
                         7.0                                                             8.0
                       6,000                                                         6,900
                      23,900                                                       27,300
         Galvanized Steel Plate                              Galvanized Steel Plate
             1,100 × 190 × 700                                     1,100 × 190 × 700
     43-5/16 × 7-15/32 × 27-9/16                     43-5/16 × 7-15/32 × 27-9/16
                  2 x 11 x 18                                                 2 x 11 x 18
                        0.21                                                           0.21
                  Sirocco Fan                                               Sirocco Fan
                      19 x 2                                                        19 x 2
                        0.97                                                           0.97
              17.5 / 14.0 / 12.0                                       20.0 / 16.0 / 12.0
               620 / 500 / 430                                          710 / 570 / 430
                    2.54 (25)                                                    2.54 (25)
              17.5 / 14.0 / 12.0                                       20.0 / 16.0 / 12.0
               620 / 500 / 430                                          710 / 570 / 430
                        0 (0)                                                           0 (0)
                       Direct                                                         Direct
                      BLDC                                                         BLDC
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)
                      25.4(1)                                                       25.4(1)
                    27 (59.5)                                                    27 (59.5)
                  35 / 29 / 28                                                36 / 33 / 28
               1, 220 - 240, 50                                         1, 220 - 240, 50
                   1, 220, 60                                                  1, 220, 60
                        EEV                                                           EEV
                 1.0~1.5 x 2C                                              1.0~1.5 x 2C