6
• Multi split combination possibility:
o A single outdoor unit enables air conditioning of up to two separate rooms for CU-2S18NBU-1.
Outdoor Unit
CU-2S18NBU-1
A B
2.8 kW CS-S9NKUW-1 ● ●
Wall
3.2 kW CS-S12NKUW-1 ● ●
Capacity range of connectable indoor units From 5.6 kW to 6.4 kW
1 room maximum pipe length (m (ft)) 25 (82.0)
Allowable elevation (m (ft)) 15 (49.2)
Total allowable pipe length (m (ft)) 50 (164.0)
Total pipe length for maximum chargeless length (m (ft)) 20 (65.6)
Additional gas amount over chargeless length (g/m (oz/ft)) 20 (0.2)
Piping Length
Note: “●” : Available
Remarks for CU-2S18NBU-1
1. At least two indoor units must be connected.
2. The total nominal cooling capacity of indoor unit that will be connected to outdoor unit must be within connectable capacity range of
indoor unit.
(as shown in the table above)
Example: The indoor units’ combination below is possible to connect to CU-2S18NBU-1. (Total nominal capacity of indoor units is
between 5.6 kW to 6.4 kW)
1) Two CS-S9NKUW-1 only. (Total nominal cooling capacity is 5.6 kW)
2) One CS-S9NKUW-1 and one CS-S12NKUW-1. (Total nominal cooling capacity is 6.0 kW)
Indoor unit combination Capacity (kW) Input Power (W)
Outdoor Unit
Operation Class (kW)
Operation
Mode
Rating Min - Max Rating Min - Max
Current (A)
208V
60Hz
Current (A)
230V
60Hz
Moisture
Removal
Volume (L/h)
2.8 2.82 1.81 ~ 3.27 850 390 ~ 1020 4.5 4.1 0.5
One-room
Operation
3.2
Cooling
3.21 1.85 ~ 3.75 1000 390 ~ 1230 5.2 4.7 0.6
2.8 + 2.8 4.89 2.09 ~ 5.86 1450 390 ~ 1920 7.6 6.9 0.5 + 0.5
2.8 + 3.2 4.89 2.10 ~ 5.86 1450 390 ~ 1870 7.6 6.9 0.5 + 0.6
CU-2S18NBU-1
Two-room
Operation
3.2 + 3.2
Cooling
4.89 2.10 ~ 5.86 1450 390 ~ 1840 7.6 6.9 0.6 + 0.6
Indoor unit combination Capacity (BTU/h) Input Power (W)
Outdoor Unit
Operation Class (kW)
Operation
Mode
Rating Min - Max Rating Min - Max
Current (A)
208V
60Hz
Current (A)
230V
60Hz
Moisture
Removal
Volume (Pt/h)
2.8 9600 6200 ~ 11200 850 390 ~ 1020 4.5 4.1 1.1
One-room
Operation
3.2
Cooling
10900 6300 ~ 12800 1000 390 ~ 1230 5.2 4.7 1.3
2.8 + 2.8 16700 7100 ~ 20000 1450 390 ~ 1920 7.6 6.9 1.1 + 1.1
2.8 + 3.2 16700 7200 ~ 20000 1450 390 ~ 1870 7.6 6.9 1.1 + 1.3
CU-2S18NBU-1
Two-room
Operation
3.2 + 3.2
Cooling
16700 7200 ~ 20000 1450 390 ~ 1840 7.6 6.9 1.3 + 1.3
• Specifications are subject to change without notice for further improvement.
