Panasonic CU-2S18NBU-1 service manual Multi split combination possibility

•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

Wall

2.8 kW

CS-S9NKUW-1

●

●

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)

Length

Allowable elevation (m (ft))

15 (49.2)

Total allowable pipe length (m (ft))

50 (164.0)

Piping

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)

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

Operation

Capacity (kW)

Input Power (W)

Current (A)

Current (A)

Moisture

Outdoor Unit

Mode

208V

230V

Removal

Operation

Class (kW)

Rating

Min - Max

Rating

Min - Max

60Hz

60Hz

Volume (L/h)

One-room

2.8

Cooling

2.82

1.81 ~ 3.27

850

390 ~ 1020

4.5

4.1

0.5

Operation

3.2

3.21

1.85 ~ 3.75

1000

390 ~ 1230

5.2

4.7

0.6

CU-2S18NBU-1

Two-room

2.8 + 2.8

4.89

2.09 ~ 5.86

1450

390 ~ 1920

7.6

6.9

0.5 + 0.5

Cooling

2.8 + 3.2

4.89

2.10 ~ 5.86

1450

390 ~ 1870

7.6

6.9

0.5 + 0.6

Operation

3.2 + 3.2

4.89

2.10 ~ 5.86

1450

390 ~ 1840

7.6

6.9

0.6 + 0.6

Indoor unit combination

Operation

Capacity (BTU/h)

Input Power (W)

Current (A)

Current (A)

Moisture

Outdoor Unit

Mode

208V

230V

Removal

Operation

Class (kW)

Rating

Min - Max

Rating

Min - Max

60Hz

60Hz

Volume (Pt/h)

One-room

2.8

Cooling

9600

6200 ~ 11200

850

390 ~ 1020

4.5

4.1

1.1

Operation

3.2

10900

6300 ~ 12800

1000

390 ~ 1230

5.2

4.7

1.3

CU-2S18NBU-1

Two-room

2.8 + 2.8

16700

7100 ~ 20000

1450

390 ~ 1920

7.6

6.9

1.1 + 1.1

Cooling

2.8 + 3.2

16700

7200 ~ 20000

1450

390 ~ 1870

7.6

6.9

1.1 + 1.3

Operation

3.2 + 3.2

16700

7200 ~ 20000

1450

390 ~ 1840

7.6

6.9

1.3 + 1.3

•Specifications are subject to change without notice for further improvement.

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