Panasonic CSC18DKU - AIR CONDITIONER

1 Features 2

2 Functions 3

3 Product Specifications 6

3.1. CS-C18DKU CU-C18DKU 6

3.2. CS-C24DKU CU-C24DKU 8

4 Dimensions 10

4.1. Indoor Unit & Remote Control 10

4.2. Outdoor Unit 11

and distribution is a violation of law.

CS-C18DKU CU-C18DKU

CS-C24DKU CU-C24DKU

5 Refrigeration Cycle Diagram 13

6 Block Diagram 14

7 Wiring Diagram 15

8 Operation Details 17

8.1. Cooling Operation 17

8.2. Soft Dry Operation 18

8.3. Automatic Operation 19

8.4. Operation Control 20

Air Conditioner

CONTENTS

Page Page

Order No. MAC0502036C1

8.5. Indoor Fan Speed Control 23

8.6. Outdoor Fan Speed Control 24

8.7. Vertical Airflow Direction Control 24

8.8. Horizontal Airflow Direction Control 25

8.9. Powerful Operation 25

8.10. Quiet Operation 26

8.11. Economy Mode Operation 27

8.12. Timer Control 27

8.13. Random Auto Restart Control 27

8.14. Remote Control Signal Receiving Sound 28

9 Operating Instructions 29

10 Installation Instructions 35

10.1. Safety Precautions 35

10.2. Indoor Unit 38

10.3. Outdoor Unit 42

11 3-way Valve 45

11.1. Evacuation of Installation 46

11.2. Pumping down 47

11.3. Evacuation of Re-installation 48

11.4. Balance refrigerant of the 3-way valves 49

11.5. Evacuation 50

11.6. Gas charging 51

12 Servicing Information 52

• High efficiency.

• Compact design.

• Wider range of horizontal discharge air.

• Air Filter with function to reduce dust and smoke.

• Automatic air swing and manual adjusted by Remote

Control for horizontal and vertical airflow.

• Long installation piping up to 82 feet.

• Quality Improvement

− Random auto restart after power failure for safety restart

operation.

− Gas leakage detection.

− Prevent Compressor reverse cycle.

− Inner protector to protect Compressor.

− Noise prevention during soft dry operation.

− Blue coated Condenser for high resistance to corrosion.

− Anti-dew formation control (Cooling & Soft Dry).

• Operation Improvement

− Quiet mode to provide quiet operation.

− Powerful mode to reach the desired room temperature

quickly.

− 24-hour timer setting.

• Serviceability Improvement

− Removable and washable Front Panel.

12.1. Indoor Electronic Controllers Removal Procedures 52

12.2. Cross Flow Fan and Indoor Fan Motor Removal

Procedures 53

12.3. Remote Control Reset 54

12.4. Auto OFF/ON Button 55

13 Troubleshooting Guide 56

13.1. Refrigeration cycle system 56

14 Technical Data 58

14.1. Thermostat characteristics 58

14.2. Operation characteristics 59

15 Exploded View (Indoor Unit) 63

15.1. CS-C18DKU CS-C24DKU 63

16 Replacement Parts List (Indoor Unit) 64

17 Exploded View (Outdoor Unit) 65

17.1. CU-C18DKU 65

17.2. CU-C24DKU 66

18 Replacement Parts List (Outdoor Unit) 67

19 Electronic Circuit Diagram 69

19.1. Indoor Unit & Outdoor Unit 69

19.2. Remote Control 74

19.3. Print Pattern Indoor Unit Printed Circuit Board 75

19.4. Print Pattern Indicator & Receiver Printed Circuit Board 76

1 Features

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

2 Functions

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

3 Product Specifications

3.1. CS-C18DKU CU-C18DKU

Unit CS-C18DKU CU-C18DKU

Power Source (Phase, Voltage, Cycle) ,V,Hz Single, 208 - 230, 60

Cooling Capacity kW (BTU/h) 5.20 (17,700) - 5.20 (17,700)

Moisture Removal l/h (Pint/h) 2.1 (4.4)

Airflow Method OUTLET

INTAKE

SIDE VIEW TOP VIEW

Air Volume (Lo) m3/min (cfm) 11.2 (400) - 11.2 (400) 24.1 (850) - 27.3 (960)

(Me) m3/min (cfm) 12.1 (430) - 13.6 (480) —

(Hi) m3/min (cfm) 13.1 (460) - 13.1 (460) 37.3 (1,320) - 39.7 (1,400)

(SHi) m3/min (cfm) 13.6 (480) - 13.6 (480) —

Noise Level dB (A) High 42 - 42, Low 37 - 37 High 54 - 56

Electrical Data Input Power kW 1.74 - 1.78

Running Current A 8.5 - 7.9

EER W/W (BTU/hW) 2.99 - 2.92 (10.15 - 9.90)

Starting Current A 47.0

Piping Connection Port

(Flare piping)

inch

G ; Half Union 1/2”

L ; Half Union 1/4”

G ; 3-way valve 1/2”

L ; 3-way valve 1/4”

Pipe Size

(Flare piping)

inch

G ; (gas side) 1/2”

L ; (liquid side) 1/4”

G ; (gas side) 1/2”

L ; (liquid side) 1/4”

Drain

Hose

Inner diameter inch (mm) 6-10/32 (16) —

Length inch (mm) 25-19/32” (650) —

Power Cord Length m — —

Number of core-wire — —

Dimensions Height inch (mm) 10 - 13/16 (275) 26 - 17/32 (685)

Width inch (mm) 39 - 9/32 (998) 31 - 1/2 (800)

Depth inch (mm) 9 - 1/16 (230) 11 - 13/16 (300)

Net Weight lb (kg) 24 (11.0) 106 (48.0)

Compressor Description —Rotary (1 cylinder)

rolling piston type

Motor Type —Induction (2-poles)

Rated Output kW — 1.2

Air Circulation Description Cross-flow Fan Propeller Fan

Material ASHT-18 AES + PC + GF15%

Motor Type Transistor (8-poles) Induction (6-poles)

Input W 40.0 133.3

Rated Output W 30 52

Fan Speed Low rpm 1,130 - 1,130 590/670

Medium rpm 1,220 - 1,220 —

High rpm 1,320 - 1,320 915/975

SuperHigh rpm 1,370 - 1,370 —

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper

Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)

Fin Type Slit Fin Corrugated Fin

Row / Stage (Plate fin configuration, forced draft)

2×15 2×31

FPI 21 18

Size (W × H × L) inch (mm) 31-28/32 × 12-13/32 × 1

(810 × 315 × 25.4)

30-1/16

29-7/32

(762.4

(742.4

× 25-20/32 ×1

×651.0 ×25.4)

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

Unit CS-C18DKU CU-C18DKU

Refrigerant Control Device —Capillary Tube

Refrigeration Oil (cm3) — SUNISO 4GDID or ATMOS

M60 or ATMOS 56m

Refrigerant (R-22) g (oz) — 1,240 (43.8)

Thermostat — Mechanical Control

Protection Device — Overload Protector

Capillary Tube Length inch (mm) —25-19/32 (650)

Flow Rate l/min — 20.9

Inner Diameter inch (mm) — 2/32 (1.9)

Air Filter Material

Style

P.P.

Honeycomb

—

Capacity Control Capillary Tube

Compressor Capacitor µF, VAC — 40 µF, 400VAC

Fan Motor Capacitor µF, VAC — 3.0 µF, 450VAC

Note:

• Specifications are subjected to change without prior notice for further improvement.

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

3.2. CS-C24DKU CU-C24DKU

Unit CS-C24DKU CU-C24DKU

Power Source (Phase, Voltage, Cycle) ,V,Hz Single, 208 - 230, 60

Cooling Capacity kW (BTU/h) 6.82 (23,200) - 6.82 (23,200)

Moisture Removal l/h (Pint/h) 3.5 (7.4)

Airflow Method OUTLET

INTAKE

SIDE VIEW TOP VIEW

Air Volume (Lo) m3/min (cfm) 12.3 (430) - 12.3 (430) —

(Me) m3/min (cfm) 13.6 (480) - 13.6 (480) —

(Hi) m3/min (cfm) 14.9 (530) - 14.9 (530) 50.5 (1,780) - 54.7 (1,930)

(SHi) m3/min (cfm) 15.4 (540) - 15.4 (540) —

Noise Level dB (A) High 46-46, Low 40-40 High 55 - 57

Electrical Data Input Power kW 2.64 - 2.68

Running Current A 13.1 -12.1

EER W/W (BTU/hW) 2.58 - 2.54 (8.75 - 8.65)

Starting Current A 63.0

Piping Connection Port

(Flare piping)

inch

G ; Half Union 5/8”

L ; Half Union 1/4”

G ; 3-way valve 5/8”

L ; 3-way valve 1/4”

Pipe Size

(Flare piping)

inch

G ; (gas side) 5/8”

L ; (liquid side) 1/4”

G ; (gas side) 5/8”

L ; (liquid side) 1/4”

Drain

Hose

Inner diameter inch (mm) 6-10/32 (16) —

Length inch (mm) 25-19/32 (650) —

Power Cord Length m — —

Number of core-wire — —

Dimensions Height inch (mm) 10 - 13/16 (275) 29 - 17/32 (750)

Width inch (mm) 39 - 9/32 (998) 34 - 7/16 (875)

Depth inch (mm) 9 - 1/16 (230) 13 - 19/32 (345)

Net Weight lb (kg) 26 (12.0) 131 (59.5)

Compressor Description —Rotary (1 cylinder) rolling

piston type

Motor Type —Induction (2-poles)

Rated Output kW — 1.8

Air Circulation Description Cross-flow Fan Propeller Fan

Material ASHT-18 PP

Motor Type Transistor (8-poles) Induction (6-poles)

Input W 50 170.8

Rated Output W 30 77

Fan Speed Low rpm 1,220 - 1,220 —

Medium rpm 1,350 - 1,350 —

High rpm 1,480 - 1,480 840 - 900

SuperHigh rpm 1,530 - 1,530 —

Heat Exchanger Description Evaporator Condenser

Tube material Copper Copper

Fin material Aluminium (Pre Coat) Aluminium (Blue Coat)

Fin Type Slit Fin Corrugated Fin

Row / Stage (Plate fin configuration, forced draft)

2×15 2×34

FPI 21 18

Size (W × H × L) mm 31-28/32 x 12-13/32 x 1

(810 x 315 x 25.4)

33-15/32

34-9/32

(850.5

(870.5

x 28-4/32 x 1

x 714 x 25.4)

Refrigerant Control Device —Capillary Tube

Refrigeration Oil (cm3) — SUNISO 4GDID or ATMOS

M60

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

Unit CS-C24DKU CU-C24DKU

Refrigerant (R-22) g (oz) — 1,480 (52.2)

Thermostat — —

Protection Device — Inner Protector

Capillary Tube Length inch (mm) —13-12/32 (340.0)

Flow Rate l/min — 21.0

Inner Diameter inch (mm) — 3/32 (2.0)

Air Filter Material

Style

P.P.

Honeycomb

—

Capacity Control Capillary Tube

Compressor Capacitor µF, VAC — 60 µF, 400/440VAC

Fan Motor Capacitor µF, VAC — 3.5 µF, 440VAC

Note:

• Specifications are subjected to change without prior notice for further improvement.

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

4 Dimensions

4.1. Indoor Unit & Remote Control

4.1.1. CS-C18DKU CS-C24DKU

CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

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