Panasonic CS-KS24NKU, CU-KS24NKU, CU-KS24NKUA, CU-KS18NKUA User Manual
TECHNICAL & SERVICE MANUAL
CS-KS18NKU + CU-KS18NKU
+ CU-KS18NKUA
CS-KS24NKU + CU-KS24NKU
+ CU-KS24NKUA
DC INVERTER SPLIT SYSTEM AIR CONDITIONER
Indoor Model No.
CS-KS18NKU
CS-KS24NKU
Indoor Unit
CS-KS18NKU
CS-KS24NKU
Product Code No.
1 852 360 90
1 852 360 91
Outdoor Model No.
CU-KS18NKU
CU-KS18NKUA
CU-KS24NKU
CU-KS24NKUA
Product Code No.
1 852 361 18
1 852 361 19
1 852 361 21
1 852 361 22
Outdoor Unit
ONER
DITI
N
CO
AIR
CU-KS18NKU
CU-KS18NKUA
IMPORTANT
These air conditioners employ new
refrigerant R410A.
Pay special attention when
servicing the unit.
CU-KS24NKU
CU-KS24NKUA
REFERENCE NO. SM700872
SAFETY PRECAUTIONS
• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them.
• The precautionary items here are divided into " Warning" and " Caution" items.
Items in particular which may cause death or serious injury to the service personnel if the work is not performed correctly,
are included in the " Warning" table.
However, even precautionary items identified as " Caution" also have the potential for serious consequences
if not performed correctly.
Important safety precautions are described for all items in both categories. Be sure to carefully follow all of them.
• Symbol Indication
: This symbol indicates items to which we need to pay attention.
In this triangle, a definite precautionary item is described.
: This symbol indicates the item to be prohibited.
In or close to this circle, a prohibited item is described.
: This symbol indicates the items requiring special attention or instruction.
In or close to this circle, a prohibited item is described.
• After doing repair work, perform a test run to confirm that there are no abnormalities.
At the same time, explain the precautions in use to the user.
Warning
Before performing an overhaul, disconnect the power plug or power cable from the unit.
Performing the work with the power supplied to the unit, may cause an electric shock.
When repair work or circuit inspection that requires power supply for the air conditioner, is to be performed,
do not touch the charging section.
Doing so may cause an electric shock.
Prohibit
For the step-up capacitor attached to the electric section, perform the repair work after sufficiently discharging it.
Insufficient capacitor discharge may cause an electric shock.
Do not perform repair work on the electric sections with wet hands.
Doing so may cause an electric shock.
Do not start or stop the air conditioner by means of connecting or disconnecting the power plug.
Doing so may cause an electric shock or fire.
When conducting repair work only use components included in the parts list for the corresponding unit and perform
the work with the appropriate tools.
Incorrect or poor repair work may cause an electric shock or fire.
Never modify the unit.
Doing so may cause an electric shock or fire.
Perform all electric work according to local applicable regulations related to electrical equipment or interior wiring
regulation and make sure to use the exclusive circuit.
Insufficient capacity to the electric circuit or defective arrangement results may cause an electric shock or fire.
Make sure to replace any power cable or lead wire showing any signs of scratch or deterioration.
Failure to do so may cause an electric shock, overheating or fire.
Make sure that there is no dust on or slack in the power plug and insert fully into the socket.
Dust or incomplete connections may cause an electric shock or fire.
Do not damage or process the power cord, as it may cause an electric shock or fire.
Prohibit
Prohibit
Prohibit
Prohibit
For the wiring between the indoor unit and outdoor unit, securely fix the specified cable onto the terminal plate.
Poorly fixed wiring may cause a heat or fire.
After connecting the wiring between the indoor unit and outdoor unit, attach the terminal cover securely.
Incomplete attachment of the terminal cover may cause overheating or fire.
2
Warning
If refrigerant gas blows off during the work, do not touch the refrigerant gas as it may cause frostbite.
If refrigerant gas leaks during the work, ventilate the room.
If refrigerant gas catches fire, harmful gas may be generated.
Do not mix any gas other than the specified refrigerant gas in the refrigerating cycle.
If air or other contaminants mix with the gas, pressure will become extremely high in the refrigerating cycle,
which may cause a unit breakdown."
When the welded section of the compressor intake or discharge pipe is to be disconnected, perform it in
a well-ventilated place after sufficiently recovering the refrigerant gas.
Any residue gas may jet out refrigerant or refrigerating machine oil, which may cause an injury.
When the work is to be performed in a high place (About 2 meters or more), make sure to wear a safety helmet,
gloves and safety belt. Insufficient safety gear may cause a serious injury in case of a fall.
When the unit is to be relocated, confirm that the new installation location has sufficient strength for the weight of the unit.
Insufficient strength of the installation location and incomplete installation work may cause an injury due to
the unit falling.
When the remote controller batteries are replaced, dispose of the old batteries out of the reach of children.
If a child swallows a battery, make sure that the child gets immediate medical attention.
Caution
Prohibit
Prohibit
Do not wash the air conditioner with water, as this may cause an electric shock or fire.
For the repair work in places with high humidity or moisture, make sure to ground the unit.
Failure to do so may cause an electric shock.
Confirm that the component attachment position, wiring condition, soldering condition and connector connection
are normal.
If not, it may cause overheating or fire.
Confirm that the temperature around the compressor is not too high, and then perform the repair work.
Failure to do so may cause a burn.
Perform welding work in a place with good ventilation.
If the work is performed in a poorly ventilated area, it might cause a lack of oxygen.
If the installation plate or attachment frame has deteriorated due to corrosion, etc., replace it.
Failure to do so may cause an injury due to the unit falling.
When the cleaning is to be performed, make sure to turn off the power and pull out the plug.
Touching the fan that is rotating at high speed may result in an injury.
When the indoor unit is to be removed, do not place it on an incline.
Doing so may cause wet furniture because water left inside may trickle down.
Do not hold the sharp end of the unit or the aluminum fins, as it may cause an injury to your hand or finger.
Prohibit
Prohibit
Prohibit
After repairs, make sure to measure the insulation resistance and confirm that the value is 1 Mohm or more.
Any insulation error may cause an electric shock.
After repairs, make sure to check the drainage of the indoor unit.
Inappropriate drainage may cause wet furniture and floors due to water leakage.
3
Table of Contents
Page
1. OPERATING RANGE
2. SPECIFICATIONS
2-1. Unit Specifications
2-2. Major Component Specifications
2-3. Other Component Specifications
3. DIMENSIONAL DATA
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
5. PERFORMANCE DATA
5-1. Temperature Charts
5-2. Cooling Capacity
5-3. Cooling Capacity (Low Ambient)
5-4. Air Throw Distance Charts
6. ELECTRICAL DATA
6-1. Electrical Characteristics
6-2. Electric Wiring Diagrams
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6
7
15
21
22
25
26
30
32
34
36
38
7. MAINTENANCE
7-1. Address Setting of the Remote Control Unit
7-2. Disconnecting and Connecting Positive Connector for Outdoor Unit
8. FUNCTIONS
8-1. Operation Functions
8-2. Protective Functions
9. TROUBLESHOOTING (BEFORE CALLING FOR SERVICE)
9-1. Precautions before Performing Inspection or Repair
9-2. Method of Self-Diagnostics
9-3. Checking the Indoor and Outdoor Units
9-4. Trouble Diagnosis of Fan Motor
9-5. Noise Malfunction and Electromagnetic Interference
10. CHECKING ELECTRICAL COMPONENTS
10-1. Measurement of Insulation Resistance
10-2. Checking Continuity of Fuse on PCB Ass'y
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42
43
44
46
47
47
50
54
56
57
58
4
11. REFRIGERANT R410A:
SPECIAL PRECAUTIONS WHEN SERVICING UNIT
11-1. Characteristics of New Refrigerant R410A
11-2. Checklist before Servicing
11-3. Tools Specifically for R410A
11-4. Tubing Installation Procedures
11-5. In Case of Compressor Malfunction
11-6. In Case Refrigerant is Leaking
11-7. Charging Additional Refrigerant
11-8. Retro-Fitting Existing Systems
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Page
59
60
61
61
62
64
65
65
APPENDIX A Operating Instructions
............................................................................................
APPENDIX B INSTALLATION INSTRUCTIONS
............................................................................
A-1
A-2
5
1. OPERATING RANGE
Models:CS-KS18NKU + CU-KS18NKU
CS-KS24NKU + CU-KS24NKU
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Cooling
Models:CS-KS18NKU + CU-KS18NKUA
CS-KS24NKU + CU-KS24NKUA
Cooling
Maximum
Minimum
Temperature Indoor Air Intake Temp. Outdoor Air Intake Temp.
Maximum
Minimum
95 °F DB / 71 °F WB
67 °F DB / 57 °F WB
F DB / 71 °F WB
95 °
67 °F DB / 57 °F WB
115 °F DB
67 °F DB
115 °F DB
0 °F DB
6
2. SPECIFICATIONS
2-1. Unit Specifications
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKU
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 11.7
SEER BTU/Wh 20
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 15
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × W
Weight
Dimensions & Weight
Shipping Volume
idth × Depth
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 93
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 26-3/8 × 34-21/32 × 11-7/32
(298 × 1,065 × 219) (670 × 880 × 285)
11-27/32 × 45-1/8 × 15-5/32
26.5
33.1
3
)
4.59 (0.13)
230V Single-Phase 60Hz
17,500
5.15
524 (890) / 441 (749) / 377 (641)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
7.0
1,500
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Auto and 3 steps / Auto (Hi, Me, Lo)
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 2.87 (1,300)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 17,500 )
( 1.2 to 5.15 )
13,100
4,400
4.89Moisture Removal (High) Pints/h
187 to 253
( 1.2 to 7.0 )
( 250 to 1,500 )
Manual
Auto
ion Valve
42 / 38 / 30 / 28
51
Flare Type
25 (7.5)
1/4 (6.35)
1/2 (12.7)
Optional
28-27/32 × 39-27/32 × 14-29/32
(733 × 1,012 × 379)(301 × 1,146 × 385)
Outdoor UnitIndoor Unit
90.4
99.2
9.88
< 230V >
(41.0)
(45.0)
(0.28)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
7
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKU
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 11.7
SEER BTU/Wh 20
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 15
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 94
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 26-3/8 × 34-21/32 × 11-7/32
(298 × 1,065 × 219) (670 × 880 × 285)
11-27/32 × 45-1/8 × 15-5/32
26.5
33.1
3
)
4.59 (0.13)
208V Single-Phase 60Hz
17,500
5.15
524 (890) / 441 (749) / 377 (641)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
7.7
1,500
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Auto and 3 steps / Auto (Hi, Me, Lo)
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 2.87 (1,300)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 17,500 )
( 1.2 to 5.15 )
13,100
4,400
4.89Moisture Removal (High) Pints/h
187 to 253
( 1.2 to 7.7 )
( 250 to 1,500 )
Manual
Auto
ion Valve
42 / 38 / 30 / 28
51
Flare Type
25 (7.5)
1/4 (6.35)
1/2 (12.7)
Optional
28-27/32 × 39-27/32 × 14-29/32
(733 × 1,012 × 379)(301 × 1,146 × 385)
Outdoor UnitIndoor Unit
90.4
99.2
9.88
< 208V >
(41.0)
(45.0)
(0.28)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
8
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKU
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.8
SEER BTU/Wh 17
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 20
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 99
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 29-1/8 × 35-7/16 × 12-19/32
(298 × 1,065 × 219) (740 × 900 × 320)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
230V Single-Phase 60Hz
24,200
7.1
659 (1,120) / 571 (970) / 494 (839)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
10.8
2,460
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Auto and 3 steps / Auto (Hi, Me, Lo)
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 4.30 (1,950)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 24,200 )
( 1.2 to 7.1 )
14,800
9,400
4.89Moisture Removal (High) Pints/h
187 to 253
( 1.3 to 10.8 )
( 280 to 2,460 )
Manual
Auto
ion Valve
47 / 44 / 41 / 30
55
Flare Type
33 (10)
1/4 (6.35)
5/8 (15.88)
Optional
34-3/16 × 41-11/32 × 16-21/32
(868 × 1,050 × 423)
Outdoor UnitIndoor Unit
119.0
127.9
13.41
< 230V >
(54.0)
(58.0)
(0.38)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
9
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKU
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.8
SEER BTU/Wh 17
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 20
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 98
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 29-1/8 × 35-7/16 × 12-19/32
(298 × 1,065 × 219) (740 × 900 × 320)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
208V Single-Phase 60Hz
24,200
7.1
659 (1,120) / 571 (970) / 494 (839)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
12.1( 1.3 to 12.1 )
2,460 ( 280 to 2,460 )
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Auto and 3 steps / Auto (Hi, Me, Lo)
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 4.30 (1,950)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 24,200 )
( 1.2 to 7.1 )
14,800
9,400
4.89Moisture Removal (High) Pints/h
187 to 253
Manual
Auto
ion Valve
47 / 44 / 41 / 30
55
Flare Type
33 (10)
1/4 (6.35)
5/8 (15.88)
Optional
34-3/16 × 41-11/32 × 16-21/32
(868 × 1,050 × 423)
Outdoor UnitIndoor Unit
119.0
127.9
13.41
< 208V >
(54.0)
(58.0)
(0.38)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
10
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKUA
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 11.7
SEER BTU/Wh 20
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 15
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 93
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Auto and 3 steps / Auto (Hi and multi steps)
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 26-3/8 × 34-21/32 × 11-7/32
(298 × 1,065 × 219) (670 × 880 × 285)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
230V Single-Phase 60Hz
17,500
5.15
524 (890) / 441 (749) / 377 (641)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
7.0
1,500
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 2.87 (1,300)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 17,500 )
( 1.2 to 5.15 )
13,100
4,400
4.89Moisture Removal (High) Pints/h
187 to 253
( 1.2 to 7.0 )
( 250 to 1,500 )
Manual
Auto
ion Valve
42 / 38 / 30 / 28
51
Flare Type
25 (7.5)
1/4 (6.35)
1/2 (12.7)
Optional
28-27/32 × 39-27/32 × 14-29/32
(733 × 1,012 × 379)
Outdoor UnitIndoor Unit
90.4
99.2
9.88
< 230V >
(41.0)
(45.0)
(0.28)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
11
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKUA
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 11.7
SEER BTU/Wh 20
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 15
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 94
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Auto and 3 steps / Auto (Hi and multi steps)
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 26-3/8 × 34-21/32 × 11-7/32
(298 × 1,065 × 219) (670 × 880 × 285)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
208V Single-Phase 60Hz
17,500
5.15
524 (890) / 441 (749) / 377 (641)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
7.7
1,500
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 2.87 (1,300)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 17,500 )
( 1.2 to 5.15 )
13,100
4,400
4.89Moisture Removal (High) Pints/h
187 to 253
( 1.2 to 7.7 )
( 250 to 1,500 )
Manual
Auto
ion Valve
42 / 38 / 30 / 28
51
Flare Type
25 (7.5)
1/4 (6.35)
1/2 (12.7)
Optional
28-27/32 × 39-27/32 × 14-29/32
(733 × 1,012 × 379)
Outdoor UnitIndoor Unit
90.4
99.2
9.88
< 208V >
(41.0)
(45.0)
(0.28)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
12
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKUA
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.8
SEER BTU/Wh 17
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 20
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 99
A 17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Auto and 3 steps / Auto (Hi and multi steps)
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 29-1/8 × 35-7/16 × 12-19/32
(298 × 1,065 × 219) (740 × 900 × 320)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
230V Single-Phase 60Hz
24,200
7.1
659 (1,120) / 571 (970) / 494 (839)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
10.8 ( 1.3 to 10.8 )
2,460 ( 280 to 2,460 )
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 4.30 (1,950)
Electric Expansion Valve
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 24,200 )
( 1.2 to 7.1 )
14,800
9,400
4.89Moisture Removal (High) Pints/h
187 to 253
Manual
Auto
47 / 44 / 41 / 30
55
Flare Type
33 (10)
1/4 (6.35)
5/8 (15.88)
Optional
34-3/16 × 41-11/32 × 16-21/32
(868 × 1,050 × 423)
Outdoor UnitIndoor Unit
119.0
127.9
13.41
< 230V >
(54.0)
(58.0)
(0.38)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
13
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKUA
Voltage Rating
Total Capacity
Sensible Capacity
Latent Capacity
Performance
Available Voltage Range
Running Amperes
EER BTU/h/W 9.8
SEER BTU/Wh 17
Compressor Locked Rotor Amperes
Electrical Rating
Fuse or Circuit Breaker Capacity A 20
Controls / Temperature Control
Control Unit
Timer
Indoor / OutdoorFan Speeds
Airflow Direction (Indoor) Horizontal
Air Filter
Compressor
Refrigerant / Amount charged at shipment Ibs (g)
Features
Refrigerant Control
Operation Sound
(*Qt = Quiet mode)
Refrigerant Tubing Connections
Refrigerant inch (mm)
Tube Diameter inch (mm)
Refrigerant Tube Kit
Unit Dimensions
Height × Width × Depth
Package Dimensions
Height × Width × Depth
Weight
Dimensions & Weight
Shipping Volume
Indoor : Hi/Me/Lo/Qt*
Outdoor : Hi
Narrow tube
Wide tube
Net
Shipping
BTU/h
kW
BTU/h
BTU/h
V
A
WPower Input
%Power Factor 98
A17.5
24-Hour ON or OFF Timer, 1-Hour OFF Timer
Auto and 3 steps / Auto (Hi and multi steps)
Vertical
dB-A
dB-A
ft (m)Max. allowable tubing length at shipment
inch
(mm)
inch
(mm)
Ibs (kg)
Ibs (kg)
cu.ft (m
11-23/32 × 41-15/16 × 8-5/8 29-1/8 × 35-7/16 × 12-19/32
(298 × 1,065 × 219) (740 × 900 × 320)
11-27/32 × 45-1/8 × 15-5/32
(301 × 1,146 × 385)
26.5
33.1
3
)
4.59 (0.13)
208V Single-Phase 60Hz
24,200
7.1
659 (1,120) / 571 (970) / 494 (839)Air Circulation (Hi/Me/Lo) ft3/min (m3/h)
12.1( 1.3 to 12.1 )
2,460 ( 280 to 2,460 )
Microprocessor / I.C. Thermistor
Wireless Remote Control Unit
Washable, Anti-Mold
DC Twin Rotary (Inverter)
R410A / 4.30 (1,950)
Electric Expans
(12.0)
(15.0)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Cooling
( 4,000 to 24,200 )
( 1.2 to 7.1 )
14,800
9,400
4.89Moisture Removal (High) Pints/h
187 to 253
Manual
Auto
ion Valve
47 / 44 / 41 / 30
55
Flare Type
33 (10)
1/4 (6.35)
5/8 (15.88)
Optional
34-3/16 × 41-11/32 × 16-21/32
(868 × 1,050 × 423)
Outdoor UnitIndoor Unit
119.0
127.9
13.41
< 208V >
(54.0)
(58.0)
(0.38)
Remarks: Rating conditions are:
Cooling: Indoor air temperature 80 °F DB / 67 °F WB
Outdoor air temperature 95 °F DB / 75 °F WB
14
2-2. Major Component Specifications
2-2-1. Indoor Unit
Indoor Unit CS-KS18NKU
Control PCB
Part No.
Controls
Control Circuit Fuse
Fan
Type
Q'ty ... Dia. and Length
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor Micro F
inch (mm)
W
Ohm
VAC
CB-CS-KS18NKU
Microprocessor
250V 3A
Cross-Flow
1 ... D3-5/8 / L33-9/32 (D92/L845)
DC Motor
SIC-41CVJ-D847-3 ... 1
8
1,250
30
-
Internal Controller
Yes
Yes
-
-
Flap Motor
Type Stepping Motor
Model
Rating
Coil Resistance Ohm
(Ambient Temp. 77 °F (25 °C))
Heat Exchanger Coil
Coil
Rows
Fins per inch
ft
2
(m2)
Each Pair of Terminal : 400 +/- 7%
Aluminum Plate Fin / Copper Tube
3.07 (0.285) Face Area
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
MP24Z3
DC 12V
2
19.5
15
Indoor Unit CS-KS24NKU
Control PCB
Part No.
Controls
Control Circuit Fuse
Fan
Type
Q'ty ... Dia. and Length
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor Micro F
inch (mm)
W
Ohm
VAC
CB-CS-KS24NKU
Microprocessor
250V 3A
Cross-Flow
1 ... D3-5/8 / L33-9/32 (D92/L845)
DC Motor
SIC-41CVJ-D847-3 ... 1
8
1,500
30
-
Internal Controller
Yes
Yes
-
-
Flap Motor
Type Stepping Motor
Model
Rating
Coil Resistance Ohm
Each Pair of Terminal : 400 +/- 7%
(Ambient Temp. 77 °F (25 °C))
Heat Exchanger Coil
Coil
Aluminum Plate Fin / Copper Tube
Rows
Fins per inch
ft
2
(m2)
3.07 (0.285) Face Area
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
MP24Z3
DC 12V
2
19.5
16
2-2-2. Outdoor Unit
Outdoor Unit CU-KS18NKU
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CU-KS18NKU
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
C-6RVN93H0M / 1,050W
FV50S ... 0.74 (350)
U - V :
0.482
V - W :
W - U :
0.482
0.482
Yes
Yes
Yes
CS-7L115
Open : 239 °F (115 °C), Close : 203 °F (95 °C)
-
-
-
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over- Current Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D16-17/32 (D420)
DC Motor
SIC-67FV-F460-1 ... 1
8
820
50
RED - WHT :
WHT - BLU :
BLU - RED :
77.5
77.5
77.5
Internal Controller
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
21.2
5.49 (0.510)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
17
Outdoor Unit CU-KS24NKU
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 77 °F (25 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CU-KS24NKU
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
G8T265FU1JW / 2,410W
FV50S ... 1.49 (700)
U - V :
0.36
V - W :
W - U :
0.36
0.36
Yes
Yes
Yes
CS-7L115
Open : 239 °F (115 °C), Close : 203 °F (95 °C)
-
-
-
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D18-1/8 (D460)
DC Motor
SIC-71FW-D490-1 ... 1
8
850
90
-
Internal Controller
Yes
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
18
Outdoor Unit CU-KS18NKUA
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 68 °F (20 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CU-KS18NKUA
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
C-6RVN93H0M / 1,050W
FV50S ... 0.74 (350)
R - S :
0.482
S - T :
0.482
T - R :
0.482
Yes
Yes
Yes
CS-7L115
Open : 239 °F (115 °C), Close : 203 °F (95 °C)
-
-
-
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over- Current Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D16-17/32 (D420)
DC Motor
SIC-67FV-F460-1 ... 1
8
820
50
RED - WHT :
WHT - BLU :
BLU - RED :
77.5
77.5
77.5
Internal Controller
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
21.2
5.49 (0.510)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
19
Outdoor Unit CU-KS24NKUA
Control PCB
Part No.
Controls
Control Circuit Fuse
Compressor
Type
Compressor Model / Nominal Output
Compressor Oil ... Amount
Coil Resistance (Ambient Temp. 77 °F (25 °C))
Safety Device
CT (Peak current cut-off control)
Compressor Discharge Temp. Control
Operation cut-off control in abnormal ambient Temp.
Overload Relay
Run Capacitor
Crankcase Heater
Pints (cc)
Ohm
Model
Operation Temp.
Micro F
VAC
CB-CU-KS24NKUA
Microprocessor
250V 25A
DC Twin Rotary (Hermetic)
G8T265FU1JW / 2,410W
FV50S ... 1.49 (700)
U - V :
0.36
V - W :
W - U :
0.36
0.36
Yes
Yes
Yes
CS-7L115
Open : 239 °F (115 °C), Close : 203 °F (95 °C)
-
-
230V 30W
Fan
Type
Q'ty ... Dia. inch (mm)
Fan Motor
Type
Model ... Q'ty
No. of Poles
Rough Measure RPM (Cool)
Nominal Output
Coil Resistance
(Ambient Temp. 68 °F (20 °C))
Safety Device
Type
Over-Current Protection
Over-Heat Protection
Run Capacitor
Heat Exchanger Coil
Coil
Rows
Fins per inch
Face Area
W
Ohm
Micro F
VAC
2
ft
(m2)
Propeller
1 ... D18-1/8 (D460)
DC Motor
SIC-71FW-D490-1 ... 1
8
850
90
-
Internal Controller
Yes
Yes
-
-
Aluminum Plate Fin / Copper Tube
2
18.1
6.40 (0.595)
External Finish Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
20
2-3. Other Component Specifications
Indoor Unit CS-KS18NKU
CS-KS24NKU
Outdoor Unit CU-KS18NKU CU-KS24NKU
CU-KS18NKUA CU-KS24NKUA
Indoor air temp sensor
(Model:PTM-D51H-S4-2 TH2)
Indoor heat exchanger sensor
(Model:PTM-D51H-S4-2 TH1)
Compressor temp sensor
(Model:TKS 293B)
10
9
8
7
6
5
Resistance (k ohm)
4
3
2
1
0
50
(10) (15) (20) (25) (30) (35) (40)
59 68 77 86 95 104
Temperature °F (°C)
200
180
160
140
120
100
Resistance (k ohm)
80
60
40
20
0
32 50 68 86 104 122 140 158 176 194
(0) (10) (20) (30) (40) (50) (60) (70) (80) (90)
Temperature °F (°C)
Outdoor air temp sensor
(Model:TKS295B)
Outdoor heat exchanger sensor
(Model:TKS292B)
40
35
30
25
20
Resistance (k ohm)
15
10
5
0
21
-
4 5 14 23 32 41 50 59 68
(
-
20)(-15)(-10) (-5) (0) (5) (10) (15) (20)
Temperature °F (°C)
3. DIMENSIONAL DATA
Indoor Unit CS-KS18NKU
CS-KS24NKU
CS-KS18NKU
CS-KS24NKU
22
Unit: inch(mm)
(852-0-0010-216-00-0)
Outdoor Unit CU-KS18NKU
CU-KS18NKUA
11-17/32
23-15/16 5-11/32
15/32
1-3/8
ID:23/32
34-21/32 (880)
2-ID:15/16
2-17/32
12-7/32
13-5/32
11-7/32 (285)
Wide tube service valve
dia.1/2" (12.70)
Narrow tube service valve
dia.1/4" (6.35)
23
23/32
1-13/16
2-13/32
26-3/8 (670)
3/32
5-23/32
Unit: inch(mm)
(852-0-0010-133-00-0)
2-5/32
4-3/8
6-17/32
Outdoor Unit CU-KS24NKU
CU-KS24NKUA
23-15/16 5-11/32
1-3/8
11-17/32
ID:23/32
35-7/16(900)
2-ID:15/16
15/32
2-15/16
13-19/32
12-19/32(320)
14-17/32
Narrow tube service valve
dia.1/4" (6.35)
Wide tube service valve
dia.5/8" (15.88)
24
23/32
1-21/32
2-7/8
29-1/8 (740)
5-29/32
4-7/16
2-1/32 4-1/2
Unit: inch(mm)
(852-0-0010-119-00-0)
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Indoor Unit CS-KS18NKU
CS-KS24NKU
Indoor unit Outdoor unit
Heat exchanger
Wide tube
*1
Narrow tube
Outdoor Unit CU-KS18NKU CU-KS24NKU
CU-KS18NKUA CU-KS24NKUA
Wide tube
service
valve
Muffler
Narrow
tube
service
valve
Accumulator
High pressure
switch
H.P.
Electric
expansion
valve
M
Compressor
Heat exchanger
O.D.
1/4"
(6.35 mm)
*1 O.D.1/2"(12.7mm)
Insulation of Refrigerant Tubing
IMPORTANT
Because capillary tubing is used in the outdoor unit, both the
wide and narrow tubes of this air conditioner become cold. To
prevent heat loss and wet floors due to dripping of
condensation, both tubes must be well insulated with a
proper insulation material. The thickness of the insulation
should be a min. 5/16"(8 mm).
After a tube has been insulated,
CAUTION
never try to bend it into a narrow
curve because it can cause the tube
to break or crack.
O.D.5/8"(15.88mm)
Thickness:
Min. 5/16"(8 mm)
Wide tube
Cooling cycle
...
CS/CU-KS18NKUCU-KS18NKUA
...
CS/CU-KS24NKUCU-KS24NKUA
Insulation
Thickness:
Min. 5/16"(8 mm)
Narrow tube
25
5. PERFORMANCE DATA
5-1. Temperature Charts
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKU
Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
(1) Low pressure performance chart
174
(1.2)
159
(1.1)
145
psig(MPaG)
(1.0)
131
(0.9)
117
(0.8)
104
(0.7)
90
(0.6)
76
Low pressure at wide tube service valve
(0.5)
(2) Operating current performance chart
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
68
(20)
°
F (27
°
80
80°F (27°C)
°
F (24
°
75
75°F (24°C)
77
(25)
Outdoor inlet air DB temp. °F(°C)
8
7
Indoor Air Temp.86
Indoor Air Temp.86°
6
°
F (27
°
80°F (27°
80
°
F (24
°
75
75°F (24°C)
F (30
°
C)
C)
F (30°C)
F (30
°
C)
C)
C)
86
(30)
Hi FanLo fan
C)
°
95
(35)
Hi FanLo fan
C)
°
104
(40)
5
4
Operating current (A)
3
2
68
(20)
(3) Indoor discharge air performance chart
64.4 (18)
°C)
60.8 (16)
57.2 (14)
53.6 (12)
50.0 (10)
Indoor discharge air temperature °F(
46.4 (8)
68
(20)
77
(25)
86
(30)
Outdoor inlet air DB temp. °F(°C)
Hi FanLo fan
C)
°
F (30
°
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
C)
°
F (27
°
80
80°F (27°C)
C)
C)
°
°
F (24
F (24
°
°
75
75
77
(25)
86
(30)
Outdoor inlet air DB temp. °F(°C)
95
(35)
95
(35)
104
(40)
104
(40)
NOTE
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
26
Indoor Unit CS-KS18NKU
Outdoor Unit CU-KS18NKUA
Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
(1) Low pressure performance chart
174
(1.2)
159
(1.1)
145
psig(MPaG)
(1.0)
131
(0.9)
117
(0.8)
104
(0.7)
90
(0.6)
76
Low pressure at wide tube service valve
(0.5)
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
(2) Operating current performance chart
8
7
6
32
(0)
41
(5)
50
(10)
Outdoor inlet air DB temp. °F(°C)
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
59
(15)
68
(20)
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
80°F (27°C)
80
75°F (24°C)
75
80
80°
75°
75
°
°
F (27°C)
F (27
°
F (24°C)
F (24
°
F (27
F (24
C)
°
C)
°
77
(25)
C)
°
C)
°
F (30
°
F (30
°
Hi FanLo fan
C)
°
86
(30)
C)
°
95
(35)
Hi FanLo fan
104
(40)
5
4
Operating current (A)
3
2
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
(3) Indoor discharge air performance chart
64.4 (18)
°C)
60.8 (16)
57.2 (14)
53.6 (12)
50.0 (10)
Indoor discharge air temperature °F(
46.4 (8)
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
32
(0)
41
(5)
50
(10)
Outdoor inlet air DB temp. °F(°C)
32
(0)
41
(5)
50
(10)
Outdoor inlet air DB temp. °F(°C)
59
(15)
59
(15)
68
(20)
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
68
(20)
77
(25)
C)
°
F (27
°
80°F (27°C)
80
C)
°
F (24
°
75
75°F (24°C)
77
(25)
F (30
°
86
(30)
C)
°
86
(30)
95
(35)
Hi FanLo fan
95
(35)
104
(40)
104
(40)
NOTE
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
27
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKU
Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
(1) Low pressure performance chart
174
(1.2)
159
(1.1)
145
psig(MPaG)
(1.0)
131
(0.9)
117
(0.8)
104
(0.7)
90
(0.6)
76
Low pressure at wide tube service valve
(0.5)
(2) Operating current performance chart
Operating current (A)
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C
68
(20)
°
F (27
°
80°F (27°C)
80
°
F (24
°
75
75°F (24°C
77
(25)
Outdoor inlet air DB temp. °F(°C)
14
13
12
11
10
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
9
8
7
6
5
4
68
(20)
C)
°
F (27
C)
°
°
80
80°F (27°C)
F (24
°
75°F (24°C)
75
77
(25)
Outdoor inlet air DB temp. °F(°C)
°
C)
)
C)
F (30
°
F (30
(30)
°
(30)
Hi FanLo fan
)
C)
°
86
C)
86
95
(35)
Hi FanLo fan
95
(35)
104
(40)
104
(40)
(3) Indoor discharge air performance chart
68.0 (20)
°C)
64.4 (18)
60.8 (16)
57.2 (14)
53.6 (12)
50.0 (10)
Indoor discharge air temperature °F(
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
46.4 (8)
42.8 (6)
68
(20)
F (27
°F (27°C)
°
80
80
F (24
°
75°F (24
75
77
(25)
°
°
°
C)
C)
C)
F (30
°
86
(30)
Hi FanLo fan
C)
°
95
(35)
104
(40)
Outdoor inlet air DB temp. °F(°C)
NOTE
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
28
Indoor Unit CS-KS24NKU
Outdoor Unit CU-KS24NKUA
Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V)
(1) Low pressure performance chart
174
(1.2)
159
(1.1)
145
psig(MPaG)
(1.0)
131
(0.9)
117
(0.8)
104
(0.7)
90
(0.6)
76
Low pressure at wide tube service valve
(0.5)
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
(2) Operating current performance chart
14
13
12
11
10
9
8
7
Operating current (A)
6
5
4
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
32
(0)
41
(5)
50
(10)
Outdoor inlet air DB temp. °F(°C)
32
(0)
41
(5)
50
(10)
Outdoor inlet air DB temp. °F(°C)
Indoor Air Temp.86
Indoor Air Temp.86°F (30
59
(15)
59
(15)
(20)
Indoor Air Temp.86
Indoor Air Temp.86°F (30°C)
(20)
F (27
°
80°F (27°C)
80
F (24
°
75°F (24
75
68
°
80
80°
°
°
75
75
68
F (27
F (27
F (24
F (24°C)
°
°C
°
C)
C)
°
°
C)
°
C)
C)
77
(25)
F (30
°
77
(25)
F (30
°
)
Hi FanLo fan
C)
°C)
°
86
(30)
C)
°
86
(30)
95
(35)
Hi FanLo fan
95
(35)
104
(40)
104
(40)
(3) Indoor discharge air performance chart
68.0 (20)
°C)
64.4 (18)
60.8 (16)
57.2 (14)
53.6 (12)
50.0 (10)
46.4 (8)
Indoor discharge air temperature °F(
42.8 (6)
-4
(-20)
5
(-15)
14
(-10)
23
(-5)
32
(0)
41
(5)
50
(10)
59
(15)
Indoor Air Temp.86
Indoor Air Temp.86
F (27
°
80°F (27°C)
80
F (24
°F (24°C)
°
75
75
68
(20)
F (30
°F (30°C)
°
C)
°
C)
°
77
(25)
Hi FanLo fan
C)
°
86
(30)
95
(35)
Outdoor inlet air DB temp. °F(°C)
NOTE
• Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
29
104
(40)
5-2. Cooling Capacity
Indoor Unit : CS-KS18NKU
Outdoor Unit : CU-KS18NKU / CU-KS18NKUA
Power Supply : 230V Single Phase 60Hz
< Cooling Capacity >
RATING CAPACITY: 17,500 BTU/h AIR FLOW RATE: 524 CFM
INDOOR OUTDOOR
ENT. TEMP.
WB DB 65 75 85 95 105 115
59 76 (24.4) SHC 14,130 14,230 14,340 14,030 13,720 10,700
(15.0) 80 (26.7) SHC 15,960 16,060 16,060 15,860 15,320 10,700
63 76 (24.4) SHC 12,810 12,610 12,300 12,000 11,690 9,550
(17.2) 80 (26.7) SHC 14,640 14,340 14,130 13,830 13,520 10,940
67 76 (24.4) SHC 10,780 10,470 10,270 10,060 9,660 7,520
(19.4) 80 (26.7) SHC 12,500 12,300 12,100 11,790 11,490 9,350
71 76 (24.4) SHC 8,540 8,330 8,130 7,930 7,420 5,490
(21.7) 80 (26.7) SHC 10,270 10,060 9,860 9,660 9,150 7,210
75 76 (24.4) SHC 6,300 6,200 5,990 5,790 5,180 3,450
(23.9) 80 (26.7) SHC 8,130 7,930 7,720 7,620 7,010 5,280
o
F (oC) AMBIENT TEMP. oF (oC)
(18.3) (23.9) (29.4) (35.0) (40.6) (46.1)
TC 16,270 16,440 16,590 16,040 15,320 10,700
CI
72 (22.2) SHC 12,400 12,500 12,610 12,300 12,000 9,860
84 (28.9) SHC 16,270 16,440 16,590 16,040 15,320 10,700
88 (31.1) SHC 16,270 16,440 16,590 16,040 15,320 10,700
TC 18,460 17,920 17,330 16,770 16,040 10,940
CI
72 (22.2) SHC 11,080 10,880 10,570 10,370 9,960 7,830
84 (28.9) SHC 16,370 16,060 15,860 15,560 15,250 10,940
88 (31.1) SHC 18,100 17,790 17,330 16,770 16,040 10,940
TC 19,190 18,650 18,060 # 17,500 16,560 11,150
CI
72 (22.2) SHC 9,050 8,740 8,540 8,330 7,930 5,790
84 (28.9) SHC 14,230 14,030 13,830 13,520 13,110 11,080
88 (31.1) SHC 15,960 15,760 15,450 15,250 14,840 11,150
TC 19,880 19,350 18,760 18,220 16,840 11,330
CI
72 (22.2) SHC 6,810 6,600 6,400 6,200 5,690 3,760
84 (28.9) SHC 12,000 11,790 11,590 11,390 10,880 8,940
88 (31.1) SHC 13,720 13,520 13,320 13,110 12,610 10,670
TC 20,470 19,940 19,350 18,830 17,030 11,450
CI
84 (28.9) SHC 9,860 9,660 9,450 9,350 8,740 6,910
88 (31.1) SHC 11,590 11,390 11,180 10,980 10,470 8,640
0.87 1.04 1.21 1.36 1.54 1.24
0.88 1.06 1.23 1.39 1.57 1.24
0.89 1.08 1.26 1.42 1.59 1.24
0.91 1.10 1.29 1.45 1.59 1.24
0.93 1.13 1.32 1.48 1.59 1.24
TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h)
NOTE
1.
Rating conditions (#)
: Indoor Unit Entering Air Temp. 80 °F (26.7 °C) DB / 67 °F (19.4 °C) WB
: Outdoor Ambient Temp. 95 °F (35 °C) DB
2.
Above data does not take Freeze Prevention Protection during cooling operation into account.
For this reason, the value may vary from the actual cooling characteristics.
3. Above data represents the value when the operation frequency of a compressor is fixed.
30
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