2-2. Major Component Specifications

2-2-1. Outdoor Unit

Outdoor Unit CU-3KE19NBU

Control PCB

 

 

 

 

 

 

 

 

 

 

Part No.

 

 

CB-CU-3KE19NBU

 

Controls

 

 

Microprocessor

 

Control Circuit Fuse

 

 

250V 25A

 

 

 

 

 

Compressor

 

 

 

 

 

 

 

 

 

 

Type

 

 

DC Twin Rotary (Hermetic)

 

Compressor Model / Nominal Output

 

 

5KD240XAB21 / 1,700W

 

Compressor Oil ... Amount

Pints (cc)

FV50S ... 1.91 (900)

 

Coil Resistance (Ambient Temp. 68 °F (20 °C)) Ohm

U - V : 0.720

 

 

 

 

 

V - W : 0.708

 

 

 

 

 

W - U : 0.726

 

Safety Device

 

 

 

 

 

CT (Peak current cut-off control)

Yes

 

 

Compressor Discharge Temp. Control

Yes

 

 

Operation cut-off control in abnormal ambient Temp.

Yes

 

 

Overload Relay

 

Model

CS-7L-2515

 

 

 

Operation Temp.

Open : 239 °F (115 °C), Close : 212 °F (100 °C)

 

Run Capacitor

 

Micro F

-

 

 

 

 

VAC

-

 

Crankcase Heater

 

 

230V 30W

 

 

 

 

 

 

Fan

 

 

 

 

 

 

 

 

 

 

Type

 

 

Propeller

 

Q'ty ... Dia.

inch (mm)

1 ... D18-1/8 (D460)

 

 

 

 

 

Fan Motor

 

 

 

 

 

 

 

 

 

 

Type

 

 

DC Motor

 

Model ... Q'ty

 

 

SIC-71FW-D490-1 ... 1

 

No. of Poles

 

 

8

 

Rough Measure RPM (Cool / Heat)

 

 

750 / 750

 

Nominal Output

 

W

90

 

Coil Resistance

 

Ohm

 

 

(Ambient Temp. 68 °F (20 °C))

 

 

-

 

 

 

 

 

 

 

Safety Device

 

 

 

 

 

Type

 

 

Internal Controller

 

 

Over-Current Protection

 

 

Yes

 

 

Over-Heat Protection

 

 

Yes

 

Run Capacitor

 

Micro F

-

 

 

 

 

VAC

-

 

 

 

 

 

 

Heat Exchanger Coil

 

 

 

 

 

 

 

 

 

 

Coil

 

 

Aluminum Plate Fin / Copper Tube

 

Rows

 

 

2

 

Fins per inch

 

 

18.1

 

Face Area

 

ft2 (m2)

6.40 (0.595)

 

 

 

 

External Finish

 

 

Acrylic baked-on enamel finish

 

 

 

 

 

 

DATA SUBJECT TO CHANGE WITHOUT NOTICE.

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Panasonic CU-3KE19NBU, CU-4KE31NBU, CU-4KE24NBU service manual Major Component Specifications, Outdoor Unit
Page 16 Page 18

CU-3KE19NBU, CU-4KE24NBU, CU-4KE31NBU specifications

The Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are high-efficiency air conditioning units that represent Panasonic's commitment to innovative climate control solutions. These models integrate advanced technologies to deliver superior performance, energy savings, and user comfort, making them ideal for both residential and commercial applications.

The CU-4KE24NBU, a part of the ECOi series, is designed for medium-sized spaces. It boasts an impressive cooling capacity, ensuring optimal temperature regulation. Its inverter technology adjusts the compressor speed according to the needs of the environment, resulting in reduced energy consumption and consistent comfort levels. The unit operates quietly, making it suitable for bedrooms, offices, or other noise-sensitive environments. Additionally, it features a robust air filtration system that improves indoor air quality by removing dust and allergens.

The CU-4KE31NBU offers a slightly higher capacity, making it perfect for larger areas. Like its counterpart, it utilizes inverter technology, which not only enhances energy efficiency but also minimizes wear and tear on the components, leading to a longer lifespan. Its multi-split capability allows for the connection of multiple indoor units to a single outdoor unit, providing flexibility in installation. The CU-4KE31NBU also integrates smart technology that allows users to control the system remotely via smartphones, giving them greater convenience and control over their environment.

For applications requiring a more compact option, the CU-3KE19NBU is an excellent choice. This model balances size and power, offering a competitive cooling capacity that can easily service small to medium-sized rooms. The unit is designed for easy installation and maintenance, featuring a lightweight construction that simplifies handling by technicians. The efficient inverter technology ensures that users benefit from lower energy bills while maintaining a consistent indoor climate.

All three models are equipped with Panasonic’s advanced refrigerants, which contribute to their eco-friendly performance. These refrigerants help reduce greenhouse gas emissions while maintaining high efficiency. Moreover, the units come with built-in diagnostic capabilities, allowing for quick detection of any issues, thus ensuring that the systems operate at peak efficiency throughout their lifespan.

In summary, the Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are exemplary air conditioning solutions that combine cutting-edge technology with user-friendly features, ensuring that they meet the varying needs of today's consumers while promoting energy efficiency and sustainability.
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