Panasonic service manual Specification, Model Outdoor Unit CU-2S18NBU-1

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2. Specification

Model

 

 

Outdoor Unit

CU-2S18NBU-1

 

 

 

 

 

 

 

Indoor Unit Combination

 

 

3.2kW + 3.2kW

 

 

 

 

 

 

1 Phase, 208-230V, 60Hz

Power Source

 

 

 

 

 

 

(Power supply from outdoor unit)

 

 

 

 

 

 

 

 

 

Capacity

kW

4.89 (2.10 ~ 5.86)

 

 

 

 

 

 

 

 

 

 

BTU/h

16700 (7200 ~ 20000)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Running Current

A

 

7.6 - 6.9

 

 

 

 

 

 

 

 

Cooling Operation

 

Electrical

 

Power Input

kW

1.45 (0.39 ~ 1.84)

 

Data

 

EER

W/W

3.37 (5.38 ~ 3.18)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BTU/hW

11.50 (18.45 ~ 10.85)

 

 

 

 

 

 

 

 

 

 

 

Noise

 

Sound Pressure Level

dB-A

 

48

 

 

 

 

 

 

 

 

 

 

 

Sound Power Level

dB

 

62

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Current

 

 

 

A

 

13.6

 

 

 

 

 

 

 

 

Starting Current

 

 

 

A

 

7.8

 

 

 

 

 

 

 

 

Minimum Circuit Ampacity

 

 

 

A

 

20

 

 

 

 

 

 

 

 

 

 

 

 

 

Height

mm (inch)

 

795 (31-5/16)

Dimension

 

 

 

 

 

 

 

 

 

 

Width

mm (inch)

875 + 95 (34-15/32 + 3-3/4)

 

 

 

 

 

 

 

 

 

 

 

 

 

Depth

mm (inch)

 

320 (12-5/8)

 

 

 

 

 

 

 

 

Net Weight

 

 

kg (Ib)

 

69 (152)

 

 

 

 

3 + 1 (Earth) ø1.5 mm2

Connection Cable

 

 

 

Pipe Length Range (1 room)

m (ft)

3 ~ 25 (9.8 ~ 82.0)

 

 

 

 

 

Maximum Pipe Length (Total Room)

m (ft)

 

50 (164.0)

 

 

 

 

 

 

 

 

Refrigerant Pipe Diameter

 

 

Liquid Side

mm (inch)

 

6.35 (1/4)

 

 

 

 

 

 

 

 

 

 

Gas Side

mm (inch)

 

9.52 (3/8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

Hermetic (Rotary)

Compressor

 

 

 

 

 

 

 

 

Motor Type

 

DC Brushless (4-poles)

 

 

 

 

 

 

 

 

 

 

 

Rated Output

W

 

1.30k

 

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

 

Propeller Fan

Air Circulation

 

 

 

 

 

 

 

 

Motor Type

 

DC Brushless (8-poles)

 

 

 

 

 

 

 

 

 

 

 

Rated Output

W

 

60

 

 

 

 

 

 

 

 

 

Fan Speed

 

 

 

High

RPM

 

650

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

Plate fin configuration forced draft type

 

 

 

 

 

 

 

 

 

 

 

Tube Material

 

 

Copper

Heat Exchanger

 

 

 

 

 

 

 

 

 

Fin Material

 

 

Aluminum

 

 

 

 

 

 

 

 

 

 

 

Row/Stage

 

 

2/36

 

 

 

 

 

 

 

 

 

 

 

 

 

FPI

 

 

19

 

 

 

 

 

 

 

 

 

Air Volume

 

 

 

High

m3/min (ft3/min)

 

37.2 (1313)

Refrigerant Control Device

 

 

 

 

 

Expansion Valve

 

 

 

 

 

 

 

 

 

Refrigerant Oil

 

 

 

 

 

 

FV50S

 

 

 

 

 

 

 

 

 

Refrigerant (R410A)

 

 

 

 

g (oz)

 

1.92k (67.8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dry Bulb

 

Wet Bulb

 

 

 

 

 

 

 

 

 

Indoor Operation Range

 

Cooling

 

Maximum

°F

89.6

 

73.4

 

 

 

 

 

 

 

 

Minimum

°F

60.8

 

51.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outdoor Operation Range

 

Cooling

 

Maximum

°F

109.4

 

78.8

 

 

 

 

 

 

 

 

Minimum

°F

60.8

 

51.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note

Specifications are subject to change without notice for further improvement.

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Contents Table of Contents Disassembly and Assembly Instructions Items to be followed are classified by the symbols Safety PrecautionsPage Model Outdoor Unit CU-2S18NBU-1 SpecificationMulti split combination possibility Dimensions Refrigeration Cycle Diagram Block Diagram Wiring Connection Diagram Electronic Circuit Diagram Main Printed Circuit Board Printed Circuit BoardNoise Filter Printed Circuit Board Check Points Installation InformationOutdoor Unit Installation Diagram Installation InstructionOutdoor Unit Installation Guidelines Gas Leak Checking Connecting the Piping to Outdoor UnitEvacuation of the Equipment Heat Insulation Operation Control Powerful OperationCooling Operation Outdoor fan controlElectronic Parts Temperature Rise Protection 2 Cool Electronic Parts Temperature Rise Protection 1 CoolProtection Control Freeze Prevention control CoolIPM power transistor Protection Control Time Delay Safety Control Restart ControlCooling overload control Cool 12.7 30 seconds Force OperationCompressor discharge high pressure protection control Compressor Protection Control Gas leak detection controlValve close detection control Wiring Error Check Servicing ModePump Down Operation Test OperationMode priority function Power Save ModeSelf Diagnosis Function Troubleshooting GuideIndoor high Check indoor heat Exchanger Outdoor Unit Removal Procedure Disassembly and Assembly InstructionsRemoving the Cabinet Top Plate and Cabinet Front Plate Remove the Control Board Cover and Particular PlatesRemoving the Propeller Fan and Fan Motor Removing the Control P.C. BoardPage CS-S9NKUW-1 CU-2S18NBU-1 Technical DataOperation Characteristics Page CS-S9NKUW-1x2 CU-2S18NBU-1 Page CS-S12NKUW-1 CU-2S18NBU-1 Page CS-S12NKUW-1x2 CU-2S18NBU-1 Page CS-S12NKUW-1+CS-S9NKUW-1 CU-2S18NBU-1 Page Exploded View and Replacement Parts List REF. no Description & Name QTY Shock Absorber Left