Panasonic CSC18DKU - AIR CONDITIONER - SPLIT User manual

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
© 2005 Panasonic HA Air-Conditioning (M) Sdn Bhd
(11969-T). All rights reserved. Unauthorized copying
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
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2 Functions
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4
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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
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
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)
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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.
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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
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
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
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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.
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4 Dimensions
4.1. Indoor Unit & Remote Control
4.1.1. CS-C18DKU CS-C24DKU
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CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

4.2. Outdoor Unit
4.2.1. CU-C18DKU
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CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU

4.2.2. CU-C24DKU
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5 Refrigeration Cycle Diagram
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6 Block Diagram
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7 Wiring Diagram
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8 Operation Details
8.1. Cooling Operation
• Cooling operation can be set using remote control.
• This operation is applied to cool down the room temperature reaches the setting temperature set on the remote control.
• The remote control setting temperature, which takes the reading of intake air temperature sensor, can be adjusted from 60°F
to 86°F.
• During cooling operation, the compressor will stop running and restart as shown in below figure.
8.1.1. Cooling Operation Time Diagram
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8.2.1. Soft Dry Operation Time Diagram
8.2. Soft Dry Operation
• Soft Dry operation can be set using remote control.
• Soft Dry operation is applied to dehumidify and to perform a gentle cooling to the room.
• This operation starts when the intake air temperature sensor reaches the setting temperature on the remote control.
• When operation begins, Soft Dry will be switched “ON” for a maximum 10 minutes, then Soft Dry operation will be turned “OFF”
for a minimum 6 minutes. After that, the Soft Dry operation will be “ON” and “OFF” based on the setting temperature as shown
in below figure.
• However after 3 minutes of compressor off, during Soft Dry “OFF” (within 6 minutes Soft Dry restart control), the indoor unit will
start to operate at normal Cooling mode if the intake temperature is higher than Cooling “ON” point.
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8.3. Automatic Operation
• Automatic operation can be set using remote control.
• This operation starts to operate with indoor fan at SLo speed for 20 seconds to judge the intake air temperature.
• After judged the temperature, the operation mode is determined by refering to the below standard.
• Then, the unit start to operate at determined operation mode, until it is switched off using remote control, with the setting
temperature as shown in below table.
• The setting temperature for all the operations can be changed one level up or one level down from the standard temperature
as shown in below table by pressing on the temperature up or temperature down button at remote control.
• The operation mode judging temperature and standard setting temperature can be increased by 3.6°F permanently, by open
the circuit of JX1 at indoor electronic controller.
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8.4. Operation Control
(For 8.4.1. to 8.4.6. information applies only to Cooling and Soft Dry Operation)
8.4.1. Restart Control (Time Delay Safety Control)
• When the thermo-off temperature (temperature which compressor stops to operate) is reached during:-
− Cooling operation - the compressor stops for 3 minutes (minimum) before resume operation.
− Soft Dry operation - the compressor stops for 6 minutes (minimum) before resume operation.
• If the operation is stopped by the remote control, the compressor will not turn on within 3 minutes from the moment operation
stop, although the unit is turn on again within the period.
• This phenomenon is to balance the pressure inside the refrigerant cycle.
8.4.2. 7 Minutes Time Save Control
• The compressor will start automatically if it has stopped for 7 minutes and the intake air temperature falls between the
compressor ON temperature (A) and compressor OFF temperature (B) during the period.
• This phenomenon is to reduce the built up humidity inside a room.
8.4.3. 60 Seconds Forced Operation
• Once the air conditioner is turned on, the compressor will not stop within 60 seconds in a normal operation although the intake
air temperature has reached the thermo-off temperature. However, force stop by pressing the OFF/ON operation button at the
remote control is permitted.
• The reason for the compressor to force operate at minimum 60 seconds is to allow the refrigerant oil run in a full cycle and
return back to the outdoor unit.
8.4.4. Anti-Freezing Control
• If the temperature of the indoor heat exchanger falls below 35.6°F continuously for 4 minutes or more, the compressor turns off.
The fan speed setting remains the same.
• This phenomenon is to protect the indoor heat exchanger from freezing and to prevent higher volume of refrigerant in liquid form
returning to the compressor.
• Compressor will restart again when the indoor heat exchanger temperature rises to 50°F (Recovery).
• Restart control (Time Delay Safety Control) will be applied in this Control if the recovery time is too short.
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