Panasonic CS-S9NKR User manual

© Panasonic Appliances Air-Conditioning Malaysia
Sdn. Bhd. 2012. Unauthorized copying and distribution
is a violation of law.
Order No: PAPAMY1207092CE
Indoor Unit Outdoor Unit
CS-S9NKR
CS-S12NKR
CS-S18NKR
CS-S24NKR
CS-S28NKR
CU-S9NKR
CU-S12NKR
CU-S18NKR
CU-S24NKR
CU-S28NKR
WARNING
This service information is designed for experienced repair technicians only and is not designed for use by the general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to
service or repair the products dealt with in this service information by anyone else could result in serious injury or death.
PRECAUTION OF LOW TEMPERATURE
In order to avoid frostbit, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

2
TABLE OF CONTENTS
1. Safety Precautions .............................................3
2. Specification .......................................................5
3. Location of Controls and Components..........11
3.1 Indoor Unit ..................................................11
3.2 Outdoor Unit ...............................................11
3.3 Remote Control ..........................................11
4. Dimensions .......................................................12
4.1 Indoor Unit ..................................................12
4.2 Outdoor Unit ...............................................14
5. Refrigeration Cycle Diagram ...........................15
5.1 CS-S9NKR CU-S9NKR
CS-S12NKR CU-S12NKR..........................15
5.2 CS-S18NKR CU-S18NKR
CS-S24NKR CU-S24NKR
CS-S28NKR CU-S28NKR..........................16
6. Block Diagram ..................................................17
6.1 CS-S9NKR CU-S9NKR
CS-S12NKR CU-S12NKR..........................17
6.2 CS-S18NKR CU-S18NKR..........................18
6.3 CS-S24NKR CU-S24NKR..........................19
6.4 CS-S28NKR CU-S28NKR..........................20
7. Wiring Connection Diagram ............................21
7.1 Indoor Unit ..................................................21
7.2 Outdoor Unit ...............................................23
8. Electronic Circuit Diagram ..............................27
8.1 Indoor Unit ..................................................27
8.2 Outdoor Unit ...............................................29
9. Printed Circuit Board .......................................33
9.1 Indoor Unit ..................................................33
9.2 Outdoor Unit ...............................................35
10. Installation Instruction.....................................39
10.1 Select The Best Location ...........................39
10.2 Indoor Unit ..................................................40
10.3 Outdoor Unit ...............................................44
11. Operation Control.............................................48
11.1 Basic Function ............................................48
11.2 Indoor Fan Motor Operation .......................49
11.3 Outdoor Fan Motor Operation ....................50
11.4 Airflow Direction..........................................50
11.5 Quiet Operation (Cooling Mode/Cooling Area
of Dry Mode)...............................................51
11.6 Powerful Mode Operation...........................52
11.7 Economy Mode Operation..........................52
11.8 Timer Control..............................................52
11.9 Auto Restart Control...................................53
11.10 Indication Panel..........................................53
12. Protection Control............................................54
12.1 Protection Control For All Operations.........54
12.2 Protection Control For Cooling & Soft Dry
Operation....................................................56
13. Servicing Mode ................................................ 58
13.1 Auto Off/On Button .................................... 58
13.2 Remote Control Button.............................. 59
14. Troubleshooting Guide................................... 60
14.1 Refrigeration Cycle System....................... 60
14.2 Breakdown Self Diagnosis Function.......... 62
14.3 Error Code Table ....................................... 63
14.4 Troubleshooting Flowchart ........................ 64
15. Disassembly and Assembly Instructions ..... 89
15.1 CS-S9NKR CS-S12NKR .......................... 89
15.2 CS-S18NKR CS-S24NKR CS-S28NKR.. 93
15.3 Outdoor Electronic Controller Removal
Procedures ................................................ 97
15.4 Outdoor Electronic Controller Removal
Procedures ................................................ 99
16. Technical Data ............................................... 101
16.1 Operation Characteristics ........................ 101
16.2 Sensible Capacity Chart.......................... 111
17. Exploded View and Replacement Parts List114
17.1 Indoor Unit ............................................... 114
17.2 Outdoor Unit ............................................ 118

3
CAUTION
WARNING
WARNING
1. Safety Precautions
•Read the following “SAFETY PRECAUTIONS” carefully before perform any servicing.
•Electrical work must be installed or serviced by a licensed electrician. Be sure to use the correct rating of the
power plug and main circuit for the model installed.
•The caution items stated here must be followed because these important contents are related to safety. The
meaning of each indication used is as below. Incorrect installation or servicing due to ignoring of the instruction
will cause harm or damage, and the seriousness is classified by the following indications.
This indication shows the possibility of causing death or serious injury
This indication shows the possibility of causing injury or damage to properties.
•The items to be followed are classified by the symbols:
•Carry out test run to confirm that no abnormality occurs after the servicing. Then, explain to user the operation,
care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for
future reference.
1. Do not modify the machine, part, material during repairing service.
2. If wiring unit is supplied as repairing part, do not repair or connect the wire even only partial wire break. Exchange the whole wiring unit.
3. Do not wrench the fasten terminal. Pull it out or insert it straightly.
4. Engage dealer or specialist for installation and servicing. If installation of servicing done by the user is defective, it will cause water leakage,
electrical shock or fire.
5. Install according to this installation instructions strictly. If installation is defective, it will cause water leakage, electric shock or fire.
6. Use the attached accessories parts and specified parts for installation and servicing. Otherwise, it will cause the set to fall, water leakage, fire
or electrical shock.
7. Install at a strong and firm location which is able to withstand the set’s weight. If the strength is not enough or installation is not properly done,
the set will drop and cause injury.
8. For electrical work, follow the local national wiring standard, regulation and the installation instruction. An independent circuit and single outlet
must be used. If electrical circuit capacity is not enough or defect found in electrical work, it will cause electrical shock or fire.
9. This equipment is strongly recommended to install with Earth Leakage Circuit Breaker (ELCB) or Residual Current Device (RCD). Otherwise, it
may cause electrical shock and fire in case equipment breakdown or insulation breakdown.
10. Use the specified cable 1.5 mm2 (1.0 ~ 1.75HP) or 2.5mm2(2.0 ~ 2.5HP), and connect tightly for indoor/outdoor connection. Connect tightly
and clamp the cable so that no external force will be acted on the terminal. If connection or fixing is not perfect, it will cause heat-up or fire at
the connection.
11. Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed perfectly, it will cause
heat-up or fire at the connection point of terminal, fire or electrical shock.
12. When carrying out piping connection, take care not to let air substances other than the specified refrigerant go into refrigeration cycle.
Otherwise, it will cause lower capacity, abnormal high pressure in the refrigeration cycle, explosive and injury.
13. Do not install outdoor unit near handrail of veranda. When installing air-conditioner unit at veranda of high rise building, child may
climb up to outdoor unit and cross over the handrail and causing accident.
14. This equipment must be properly earthed. Earth line must not be connected to gas pipe, water pipe, earth of lightning rod and
telephone. Otherwise, it may cause electric shock in case equipment breakdown or insulation breakdown.
15. Keep away from small children, the thin film may cling to nose and mouth and prevent breathing.
16. Do not damage or use unspecified power supply cord. Otherwise it will cause fire or electric shock.
17. Do not modify the length of the power supply cord or use extension cord, and do not share the single outlet with other electric
appliances. Otherwise, it will cause fire or electric shock.
18. In case of using existing (R22) pipes during installation of R410 models, must carry out pump down properly to collect back the
refrigerant and oil before installation new unit.
Thickness of copper pipes used with R410A must be more than 0.6mm. Never use copper pipes thinner than 0.6mm.
It is desirable that the amount of residual oil is less than 40 mg/10m.
This symbol denotes item that is PROHIBITED from doing.

4
CAUTION
19. During installation, before run the compressor, confirm the refrigerant pipes are fixed. Operation of compressor without fixing the piping,
setting the valves at open condition, a burst may occur and cause injury.
20. During pump down operation, stop the compressor before remove the refrigerant piping. When remove piping while valves at open condition,
burst may occur and cause injury.
21. After completion of installation or service, confirm there is no leakage or refrigerant gas. It may generate toxic gas when the refrigerant
contacts with fire.
22. Ventilate if there is refrigerant gas leakage during operation. It may cause toxic gas when refrigerant contacts with fire.
23. Do not insert your fingers or other objects into the unit, high speed rotating fan may cause injury.
24. Must not use other parts except original parts describe in catalog and manual.
1. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at surrounding of the
unit, it may cause fire.
2. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the room and damage
the furniture.
3. Tighten the flare nut with torque wrench according to specified method. If the flare nut is over-tightened, after a long period, the flare
may break and cause refrigerant gas leakage.
4. Do not touch outdoor unit air inlet and aluminium fin. It may cause injury.
5. Select an installation location which is easy for maintenance.
6. Pb free solder has a higher melting point than standard solder; typically the melting point is 50°F – 70°F (30°C – 40°C) higher. Please use
a high temperature solder iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F (370 ± 10°C).
Pb free solder will tend to splash when heated too high (about 1100°F / 600°C).
7. Power supply connection to the air conditioner. Connect the power supply cord of the air conditioner to the mains using one of the following
methods.
Power supply point shall be the place where there is ease for access for the power disconnection in case of emergency. In some countries,
permanent connection of this room air conditioner to the power supply is prohibited.
i. Power supply connection to the receptacle using a power plug.
Use an approved 15/16A (1.0 ~ 1.75HP) or 16A (2.0HP) or 20A (2.5HP) power plug with earth pin for the connection to the socket.
ii. Power supply connection to a circuit breaker for the permanent connection.
Use an approved 16A (1.0 ~ 2.0HP) or 20A (2.5HP) circuit breaker for the permanent connection. It must be a double pole switch with a
minimum 3.0 mm contact gap.
8. Do not release refrigerant during piping work for installation, servicing, reinstallation and during repairing a refrigerant parts. Take
care of the liquid refrigerant, it may cause frostbite.
9. Installation or servicing work: It may need two people to carry out the installation or servicing work.
10. Do not install this appliance in a laundry room or other location where water may drip from the ceiling, etc.
11. Do not sit or step on the unit, you may fall down accidentally.
12. Do not touch the sharp aluminium fin, sharp parts may cause injury.
If you are required to handle sharp parts during installation or servicing, please wear hand glove.
Sharp parts may cause injury.

5
2. Specification
Indoor CS-S9NKR CS-S12NKR
Model
Outdoor CU-S9NKR CU-S12NKR
Performance Test Condition AS AS
Phase, Hz Single, 50 Single, 50
Power Supply
V 230 240 230 240
Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max.
kW 0.90 2.60 3.00 0.90 2.60 3.00 0.90 3.50 4.00 0.90 3.50 4.00
BTU/h 3070 8870 10200 3070 8870 10200 3070 11900 13600 3070 11900 13600
Capacity
kcal/h 770 2240 2580 770 2240 2580 770 3010 3440 770 3010 3440
Running Current A - 3.0 - - 2.9 - - 4.1 - - 4.0 -
Input Power W 240 630 880 240 630 880 250 860 1.18k 250 860 1.18k
W/W 3.75 4.13/3.0 3.41 3.75 4.13/3.0 3.41 3.60 4.07/3.0 3.39 3.60 4.07/3.0 3.39
Btu/hW 12.79 14.08 11.59 12.79 14.08 11.59 12.28 13.84 11.53 12.28 13.84 11.53
EER
kcal/hW 3.21 3.56 2.93 3.21 3.56 2.93 3.08 3.50 2.92 3.08 3.50 2.92
Power Factor % - 91 - - 91 - - 91 - - 90 -
dB-A 37 / 26 / 21 37 / 26 / 21 38 / 28 / 21 38 / 28 / 21
Indoor Noise
(H / L / QLo) Power Level
dB 53 / 42 / 37 53 / 42 / 37 54 / 44 / 37 54 / 44 / 37
dB-A 47 / - / - 47 / - / - 48 / - / - 48 / - / -
Cooling
Outdoor Noise
(H / L / QLo) Power Level
dB 62 / - / - 62 / - / - 63 / - / - 63 / - / -
Max Current (A) / Max Input Power (W) 5.7 / 1.25k 7.5 / 1.69k
Starting Current (A) 3.0 4.1
Type Hermetic Motor Hermetic Motor
Motor Type Brushless (6 poles) Brushless (6 poles)
Compressor
Output Power W 650 650
Type Cross-flow fan Cross-flow fan
Material ASG20K1 ASG20K1
Motor Type Induction (4 poles) Induction (4 poles)
Input Power W 43.9 - 48.9 43.9 - 48.9
Output Power W 24 24
QLo rpm 620 - 620 620 - 620
Lo rpm 740 - 740 780 - 780
Me rpm 890 - 890 930 - 930
Hi rpm 1050 - 1050 1080 - 1080
Indoor Fan
Speed
SHi rpm 1150 - 1150 1200 - 1200
Type Propeller Propeller
Material PP PP
Motor Type Induction (6 poles) Induction (6 poles)
Input Power W - -
Output Power W 24 25
Outdoor Fan
Speed Hi rpm 820 - 840 830 - 850
Moisture Removal L/h (Pt/h) 1.6 (3.4) 2.0 (4.2)
QLo m3/min (ft3/m) 5.29 (187) 5.29 (187)
Lo m3/min (ft3/m) 6.73 (238) 7.35 (260)
Me m3/min (ft3/m) 8.36 (295) 9.02 (318)
Hi m3/min (ft3/m) 10.1 (355) (168) 10.7 (380) (178)
Indoor Airflow
SHi m3/min (ft3/m) 11.26 (398) 12.04 (425)
Outdoor Airflow Hi m3/min (ft3/m) 35.1 (1240) 36.0 (1270) 31.7 (1120) 32.5 (1145)

6
Indoor CS-S9NKR CS-S12NKR
Model
Outdoor CU-S9NKR CU-S12NKR
Control
Device Capillary Tube Capillary Tube
Refrigerant
Oil cm3FV50S (320) FV50S (320)
Refrigeration
Cycle
Refrigerant
Type g (oz) R410A, 860 (30.4) R410A, 1.06k (37.4)
Height
(I/D / O/D) mm (inch) 290 (11-7/16) / 619 (24-3/8) 290 (11-7/16) / 619 (24-3/8)
Width
(I/D / O/D) mm (inch) 870 (34-9/32) / 824 (32-15/32) 870 (34-9/32) / 824 (32-15/32)
Dimension
Depth
(I/D / O/D) mm (inch) 214 (8-7/16) / 299 (11-25/32) 214 (8-7/16) / 299 (11-25/32)
Weight Net
(I/D / O/D) kg (lb) 9 (20) / 30 (66) 9 (20) / 32 (71)
Pipe Diameter
(Liquid / Gas) mm (inch) 6.35 (1/4) / 9.52 (3/8) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 7.5 (24.6) 7.5 (24.6)
Length range (min – max) m (ft) 3 (9.8) ~ 15 (49.2) 3 (9.8) ~ 15 (49.2)
I/D & O/D Height different m (ft) 15 (49.2) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 15 (0.2) 15 (0.2)
Piping
Length for Additional Gas m (ft) 7.5 (24.6) 7.5 (24.6)
Inner
Diameter mm 16.7 16.7
Drain Hose
Length mm 550 550
Fin Material Aluminium (Pre coat) Aluminium (Pre coat)
Fin Type Slit Fin Slit Fin
Row ×Stage
×FPI 2 × 15 × 21 2 × 15 × 21
Indoor Heat
Exchanger
Size
(W ×H ×L) mm 610 × 315 × 25.4 610 × 315 × 25.4
Fin Material Aluminium (Blue coated) Aluminium (Blue coated)
Fin Type Slit Fin Slit Fin
Row ×Stage
×FPI 1 × 28 × 17 2 × 28 × 17
Outdoor Heat
Exchanger
Size
(W ×H ×L) mm 12.7 × 588 × 795.8 25.4 × 588 × 790.3:770.4
Material Polypropelene Polypropelene
Air Filter
Type One-touch One-touch
Power Supply Outdoor Outdoor
Power Supply Cord A - -
Thermostat - -
Protection Device - -
DRY BULB WET BULB DRY BULB WET BULB
Maximum 32 23 32 23
Indoor Operation Range
Minimum 16 11 16 11
Maximum 46 26 46 26
Outdoor Operation Range
Minimum 5 4 5 4
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB).

7
Indoor CS-S18NKR
Model
Outdoor CU-S18NKR
Performance Test Condition AS
Phase, Hz Single, 50
Power Supply
V 230 240
Min. Mid. Max. Min. Mid. Max.
kW 0.90 5.00 6.00 0.90 5.00 6.00
BTU/h 3070 17100 20500 3070 17100 20500
Capacity
kcal/h 770 4300 5160 770 4300 5160
Running Current A - 5.9 - - 5.7 -
Input Power W 240 1.30k 1.85k 240 1.30k 1.85k
W/W 3.75 3.85/2.5 3.24 3.75 3.85/2.5 3.24
Btu/hW 12.79 13.15 11.08 12.79 13.15 11.08
EER
kcal/hW 3.21 3.31 2.79 3.21 3.31 2.79
Power Factor % - 96 - - 95 -
dB-A 42 / 34 / 31 42 / 34 / 31
Indoor Noise
(H / L / QLo) Power Level
dB 58 / 50 / 47 58 / 50 / 47
dB-A 47 / - / 42 47 / - / 42
Cooling
Outdoor Noise
(H / L / QLo) Power Level
dB 61 / - / 56 61 / - / 56
Max Current (A) / Max Input Power (W) 9.5 / 2.23k
Starting Current (A) 5.9
Type Hermetic Motor
Motor Type Brushless (6 poles)
Compressor
Output
Power W 900
Type Cross-flow fan
Material ASG30K1
Motor Type Transistor (8 poles)
Input Power W 94.8 - 94.8
Output Power W 40
QLo rpm 870 - 870
Lo rpm 950 - 950
Me rpm 1090 - 1090
Hi rpm 1220 - 1220
Indoor Fan
Speed
SHi rpm 1320 - 1320
Type Propeller
Material PP
Motor Type Induction (6 poles)
Input Power W -
Output Power W 40
Outdoor Fan
Speed Hi rpm 530 - 550
Moisture Removal L/h (Pt/h) 2.8 (5.9)
QLo m3/min (ft3/m) 10.88 (384)
Lo m3/min (ft3/m) 12.07 (426)
Me m3/min (ft3/m) 14.07 (497)
Hi m3/min (ft3/m) 16.0 (565) (267)
Indoor Airflow
SHi m3/min (ft3/m) 17.6 (621)
Outdoor Airflow Hi m3/min (ft3/m) 39.7 (1400) 41.3 (1460)

8
Indoor CS-S18NKR
Model
Outdoor CU-S18NKR
Control
Device Expansion Valve
Refrigerant
Oil cm3FV50S (450)
Refrigeration
Cycle
Refrigerant
Type g (oz) R410A, 1.31k (46.2)
Height
(I/D / O/D) mm (inch) 290 (11-7/16) / 795 (31-5/16)
Width
(I/D / O/D) mm (inch) 1070 (42-5/32) / 875 (34-15/32)
Dimension
Depth
(I/D / O/D) mm (inch) 240 (9-15/32) / 320 (12-5/8)
Weight Net
(I/D / O/D) kg (lb) 12 (26) / 50 (110)
Pipe Diameter
(Liquid / Gas) mm (inch) 6.35 (1/4) / 12.70 (1/2)
Standard length m (ft) 5.0 (16.4)
Length range
(min – max) m (ft) 3 (9.8) ~ 20 (65.6)
I/D & O/D Height
different m (ft) 15 (49.2)
Additional Gas Amount g/m (oz/ft) 20 (0.2)
Piping
Length for Additional
Gas m (ft) 10 (32.8)
Inner
Diameter mm 16.7
Drain Hose
Length mm 550
Fin Material Aluminium (Pre coat)
Fin Type Slit Fin
Row ×Stage
×FPI 2 × 15 × 19
Indoor Heat
Exchanger
Size
(W ×H ×L) mm 810 × 315 × 25.4
Fin Material Aluminium (Blue coated)
Fin Type Slit Fin
Row ×Stage
×FPI 2 × 36 × 17
Outdoor Heat
Exchanger
Size
(W ×H ×L) mm 25.4 × 756 × 847.9:827.9
Material Polypropelene
Air Filter
Type One-touch
Power Supply Outdoor
Power Supply Cord A -
Thermostat -
Protection Device -
DRY BULB WET BULB
Maximum 32 23
Indoor Operation Range
Minimum 16 11
Maximum 46 26
Outdoor Operation Range
Minimum 5 4
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB).

9
Indoor CS-S24NKR CS-S28NKR
Model
Outdoor CU-S24NKR CU-S28NKR
Performance Test Condition AS AS
Phase, Hz Single, 50 Single, 50
Power Supply
V 230 240 230 240
Min. Mid. Max. Min. Mid. Max. Min. Mid. Max. Min. Mid. Max.
kW 2.00 7.10 7.70 2.00 7.10 7.70 2.10 8.00 8.40 2.10 8.00 8.40
BTU/h 6820 24200 26300 6820 24200 26300 7160 27300 28600 7160 27300 28600
Capacity
kcal/h 1720 6110 6620 1720 6110 6620 1810 6880 7220 1810 6880 7220
Running Current A - 9.8 - - 9.5 - - 11.3 - - 11.0 -
Input Power W 470 2.18k 2.40k 470 2.18k 2.40k 430 2.46k 2.60k 430 2.46k 2.60k
W/W 4.26
3.26 /
2.0 3.21 4.26 3.26 / 2.0 3.21 4.88 3.25 / 1.5 3.23 4.88 3.25 / 1.5 3.23
Btu/hW 14.51 11.10 10.96 14.51 11.10 10.96 16.65 11.10 11.00 16.65 11.10 11.00
EER
kcal/hW 3.66 2.80 2.76 3.66 2.80 2.76 4.21 2.80 2.78 4.21 2.80 2.78
Power Factor % - 97 - - 96 - - 95 - - 93 -
dB-A 47 / 38 / 35 47 / 38 / 35 50 / 38 / 35 50 / 38 / 35
Indoor Noise
(H / L / QLo) Power Level
dB 63 / 54 / 51 63 / 54 / 51 66 / 54 / 51 66 / 54 / 51
dB-A 52 / - / 47 52 / - / 47 54 / - / 49 54 / - / 49
Cooling
Outdoor Noise
(H / L / QLo) Power Level
dB 66 / - / 61 66 / - / 61 68 / - / 63 68 / - / 63
Max Current (A) / Max Input Power (W) 14.4 / 3.25k 14.6 / 3.26k
Starting Current (A) 9.8 11.3
Type Hermetic Motor Hermetic Motor
Motor Type Brushless (4 poles) Brushless (4 poles)
Compressor
Output Power W 1.70k 1.70k
Type Cross-flow fan Cross-flow fan
Material ASG30K1 ASG30K1
Motor Type Transistor (8-poles) Transistor (8-poles)
Input Power W 94.8 - 94.8 94.8 - 94.8
Output Power W 40 40
QLo rpm 950 950
Lo rpm 1050 1050
Me rpm 1240 1290
Hi rpm 1430 1540
Indoor Fan
Speed
SHi rpm 1530 1570
Type Propeller Propeller
Material PP PP
Motor Type Induction (6-poles) DC (8-poles)
Input Power W - -
Output Power W 80 60
Outdoor Fan
Speed Hi rpm 670 700
Moisture Removal L/h (Pt/h) 4.1 (8.7) 4.7 (9.9)
QLo m3/min (ft3/m) 11.82 (417) 11.82 (417)
Lo m3/min (ft3/m) 13.28 (469) 13.28 (469)
Me m3/min (ft3/m) 16.09 (568) 16.77 (592)
Hi m3/min (ft3/m) 18.4 (650) (307) 20.4 (720) (340)
Indoor Airflow
SHi m3/min (ft3/m) 20.20 (713) 20.84 (736)
Outdoor Airflow Hi m3/min (ft3/m) 50.2 (1770) 51.9 (1830) 53.5 (1890) 53.5 (1890)

10
Indoor CS-S24NKR CS-S28NKR
Model
Outdoor CU-S24NKR CU-S28NKR
Control
Device Capillary Tube Expansion Valve
Refrigerant
Oil cm3FV50S (800) FV50S (800)
Refrigeration
Cycle
Refrigerant
Type g (oz) R410A, 1.58k (55.8) R410A, 1.77k (62.5)
Height
(I/D / O/D) mm (inch) 290 (11-7/16) / 795 (31-5/16) 290 (11-7/16) / 795 (31-5/16)
Width
(I/D / O/D) mm (inch) 1070 (42-5/32) / 875 (34-15/32) 1070 (42-5/32) / 875 (34-15/32)
Dimension
Depth
(I/D / O/D) mm (inch) 240 (9-15/32) / 320 (12-5/8) 240 (9-15/32) / 320 (12-5/8)
Weight Net
(I/D / O/D) kg (lb) 12 (26) / 56 (123) 12 (26) / 57 (126)
Pipe Diameter
(Liquid / Gas) mm (inch) 6.35 (1/4) / 15.88 (5/8) 6.35 (1/4) / 15.88 (5/8)
Standard length m (ft) 5.0 (16.4) 5.0 (16.4)
Length range (min – max) m (ft) 3 (9.8) ~ 30 (98.4) 3 (9.8) ~ 30 (98.4)
I/D & O/D Height different m (ft) 20 (65.6) 20 (65.6)
Additional Gas Amount g/m (oz/ft) 30 (0.3) 30 (0.3)
Piping
Length for Additional Gas m (ft) 10 (32.8) 10 (32.8)
Inner
Diameter mm 16.7 16.7
Drain Hose
Length mm 650 650
Fin Material Aluminium (Pre coat) Aluminium (Pre coat)
Fin Type Slit Fin Slit Fin
Row ×Stage
×FPI 2 ×15 ×21 2 ×15 ×21
Indoor Heat
Exchanger
Size
(W ×H ×L) mm 810 ×315 ×25.4 810 × 315 × 25.4
Fin Material Aluminium (Blue coated) Aluminium (Blue coated)
Fin Type Slit Fin Slit Fin
Row ×Stage
×FPI 2 × 36 × 17 2 × 36 × 17
Outdoor Heat
Exchanger
Size
(W ×H ×L) mm 25.4 × 756 × 905.9:885.9 25.4 × 756 × 905.9:885.9
Material Polypropelene Polypropelene
Air Filter
Type One-touch One-touch
Power Supply Outdoor Outdoor
Power Supply Cord A - -
Thermostat - -
Protection Device - -
DRY BULB WET BULB DRY BULB WET BULB
Maximum 32 23 32 23
Indoor Operation Range
Minimum 16 11 16 11
Maximum 46 26 46 26
Outdoor Operation Range
Minimum 5 4 16 11
1. Cooling capacities are based on indoor temperature of 27°C DRY BULB (80.6°F DRY BULB), 19.0°C WET BULB (66°F WET BULB) and
outdoor air temperature of 35°C DRY BULB (95°F DRY BULB), 24°C WET BULB (75.2°F WET BULB).

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3. Location of Controls and Components
3.1 Indoor Unit
3.2 Outdoor Unit
3.3 Remote Control

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4. Dimensions
4.1 Indoor Unit
4.1.1 CS-S9NKR CS-S12NKR

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4.1.2 CS-S18NKR CS-S24NKR CS-S28NKR

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4.2 Outdoor Unit
4.2.1 CU-S9NKR CU-S12NKR
4.2.2 CU-S18NKR CU-S24NKR CU-S28NKR

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5. Refrigeration Cycle Diagram
5.1 CS-S9NKR CU-S9NKR CS-S12NKR CU-S12NKR

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5.2 CS-S18NKR CU-S18NKR CS-S24NKR CU-S24NKR
CS-S28NKR CU-S28NKR

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6. Block Diagram
6.1 CS-S9NKR CU-S9NKR CS-S12NKR CU-S12NKR

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6.2 CS-S18NKR CU-S18NKR

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6.3 CS-S24NKR CU-S24NKR

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6.4 CS-S28NKR CU-S28NKR