10 
Indoor CS-S24NKR  CS-S28NKR 
Model 
Outdoor CU-S24NKR  CU-S28NKR 
Control 
Device 
  Capillary Tube  Expansion Valve 
Refrigerant 
Oil 
cm
3
  FV50S (800)  FV50S (800) 
Refrigeration 
Cycle 
Refrigerant 
Type 
g (oz)  R410A, 1.58k (55.8)  R410A, 1.77k (62.5) 
Height 
(I/D / O/D) 
mm (inch)  290 (11-7/16) / 795 (31-5/16)  290 (11-7/16) / 795 (31-5/16) 
Width 
(I/D / O/D) 
mm (inch)  1070 (42-5/32) / 875 (34-15/32)  1070 (42-5/32) / 875 (34-15/32) 
Dimension 
Depth 
(I/D / O/D) 
mm (inch)  240 (9-15/32) / 320 (12-5/8)  240 (9-15/32) / 320 (12-5/8) 
Weight 
Net 
(I/D / O/D) 
kg (lb)  12 (26) / 56 (123)  12 (26) / 57 (126) 
Pipe Diameter 
(Liquid / Gas) 
mm (inch)  6.35 (1/4) / 15.88 (5/8)  6.35 (1/4) / 15.88 (5/8) 
Standard length  m (ft)  5.0 (16.4)  5.0 (16.4) 
Length range (min – max)  m (ft)  3 (9.8) ~ 30 (98.4)  3 (9.8) ~ 30 (98.4) 
I/D & O/D Height different  m (ft)  20 (65.6)  20 (65.6) 
Additional Gas Amount  g/m (oz/ft)  30 (0.3)  30 (0.3) 
Piping 
Length for Additional Gas  m (ft)  10 (32.8)  10 (32.8) 
Inner 
Diameter 
mm   16.7  16.7 
Drain Hose 
Length mm  650  650 
Fin Material    Aluminium (Pre coat)  Aluminium (Pre coat) 
Fin Type    Slit Fin  Slit Fin 
Row × Stage 
× FPI 
 
2 × 15 × 21   2 × 15 × 21 
Indoor Heat 
Exchanger 
Size 
(W 
× H × L) 
mm 
810 × 315 × 25.4 
810 × 315 × 25.4 
Fin Material    Aluminium (Blue coated)  Aluminium (Blue coated) 
Fin Type    Slit Fin  Slit Fin 
Row × Stage 
× FPI 
  2 × 36 × 17   2 × 36 × 17  
Outdoor Heat 
Exchanger 
Size 
(W 
× H × L) 
mm  25.4 × 756 × 905.9:885.9  25.4 × 756 × 905.9:885.9 
Material   Polypropelene  Polypropelene 
Air Filter 
Type   One-touch  One-touch 
Power Supply    Outdoor  Outdoor 
Power Supply Cord  A  -  - 
Thermostat   -  - 
Protection Device    -  - 
  DRY BULB  WET BULB  DRY BULB  WET BULB 
Maximum 32  23  32  23 
Indoor Operation Range 
Minimum 16  11  16  11 
Maximum 46  26  46  26 
Outdoor Operation Range 
Minimum 5  4  16  11 
 
1.  Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and 
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB).