Panasonic CU-4KS31NBU service manual 19,250 25,420 19,410

Page 58

Outdoor Unit

: CU-4KS24NBU

 

 

 

 

 

 

 

 

Indoor Unit

: CS-MKS9NKU × 3

 

 

 

 

 

 

Power Supply : 230V Single Phase 60Hz

 

 

 

 

 

 

 

< Cooling Capacity (Low Ambient) >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATING CAPACITY:

25,400 BTU/h

 

AIR FLOW RATE:

777 CFM

 

INDOOR

 

 

 

OUTDOOR

 

 

 

 

ENT. TEMP.oF (oC)

 

 

 

AMBIENT TEMP.oF (oC)

 

 

 

WB

DB

 

 

 

15

25

35

45

55

 

 

 

 

 

 

(-9.4)

(-3.9)

(1.7)

(7.2)

(12.8)

 

 

 

TC

 

 

25,470

25,420

25,470

25,670

25,610

 

 

72 (22.2)

SHC

 

 

19,250

25,420

19,250

19,410

19,410

 

59

76 (24.4)

SHC

 

 

21,970

25,420

21,970

22,120

22,120

 

(15.0)

80 (26.7)

SHC

 

 

24,840

25,420

24,840

24,840

24,840

 

 

84 (28.9)

SHC

 

 

25,470

25,420

25,470

25,670

25,610

 

 

88 (31.1)

SHC

 

 

25,470

25,420

25,470

25,670

25,610

 

 

 

TC

 

 

25,540

25,590

25,780

26,160

26,210

 

 

72 (22.2)

SHC

 

 

15,780

25,590

15,780

15,940

16,090

 

63

76 (24.4)

SHC

 

 

18,350

25,590

18,500

18,650

18,650

 

(17.2)

80 (26.7)

SHC

 

 

21,220

25,590

21,370

21,520

21,520

 

 

84 (28.9)

SHC

 

 

23,930

25,590

23,930

24,080

24,230

 

 

88 (31.1)

SHC

 

 

25,540

25,590

25,780

26,160

26,210

 

 

 

TC

 

 

25,380

25,550

25,930

26,510

26,700

 

 

72 (22.2)

SHC

 

 

12,010

25,550

12,310

12,470

12,620

 

67

76 (24.4)

SHC

 

 

14,730

25,550

15,030

15,180

15,330

 

(19.4)

80 (26.7)

SHC

 

 

17,600

25,550

17,750

18,050

18,050

 

 

84 (28.9)

SHC

 

 

20,160

25,550

20,460

20,610

20,760

 

 

88 (31.1)

SHC

 

 

22,880

25,550

23,180

23,330

23,480

 

 

 

TC

 

 

24,930

25,240

25,840

26,690

27,040

 

 

72 (22.2)

SHC

 

 

8,240

25,240

8,540

8,840

9,000

 

71

76 (24.4)

SHC

 

 

10,960

25,240

11,260

11,560

11,710

 

(21.7)

80 (26.7)

SHC

 

 

13,670

25,240

13,970

14,280

14,430

 

 

84 (28.9)

SHC

 

 

16,390

25,240

16,690

16,990

17,140

 

 

88 (31.1)

SHC

 

 

19,100

25,240

19,410

19,710

19,860

 

 

 

TC

 

 

24,210

24,680

25,530

26,670

27,190

 

75

76 (24.4)

SHC

 

 

7,190

24,680

7,640

7,940

8,240

 

(23.9)

80 (26.7)

SHC

 

 

10,050

24,680

10,500

10,810

10,960

 

 

84 (28.9)

SHC

 

 

12,620

24,680

13,070

13,520

13,670

 

 

88 (31.1)

SHC

 

 

15,330

24,680

15,780

16,090

16,390

 

 

 

TC : Total Cooling Capacity (BTU/h)

SHC : Sensible Heat Capacity (BTU/h)

NOTE

1.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.

2.Above data represents the value when the operation frequency of a compressor is fixed.

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Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Wall Mounted Type Semi-Concealed TypeOperating Range Indoor Unit CS-MKS9NKU × Unit SpecificationsOutdoor Unit CU-3KS19NBU Duct Less Type RatedOutdoor Unit Indoor Unit208V CU-4KS24NBU BTU/h/W Compressor Locked Rotor Amperes 20,600 CU-4KS31NBU Indoor Unit CS-MKS9NKU 4units Outdoor Unit CU-4KS31NBU 1unit 24,200 Major Component Specifications Outdoor UnitOutdoor Unit CU-4KS24NBU Outdoor Unit CU-4KS31NBU Other Component Specifications CU-3KS19NBU CU-4KS24NBU CU-4KS31NBUDimensional Data Unit inchmm 852-0-0010-20500-0 Unit inchmm 852-0-0010-20600-0 Indoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Outdoor unitIndoor unit Outdoor unit 1/4 Strainer Header Sub Main Compressor Accumulator Temperature Charts CU-3KS19NBU Temperature ChartsOutdoor Unit CU-3KS19NBU Indoor Unit CS-MKS7NKU × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU × Cooling Characteristics Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NKU ×Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-3KS19NBU Indoor Unit CS-KS18NB4UW × Temperature Charts CU-4KS24NBU Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU ×Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS9NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS24NKU × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-4KS24NBU Indoor Unit CS-KS18NB4UW × Temperature Charts CU-4KS31NBU Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS9NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS18NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS24NKU × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS9NB4U × Outdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NB4U × Outdoor Unit CU-4KS31NBU Indoor Unit CS-KS18NB4UW × Cooling Capacity Indoor OutdoorPower Supply 230V Single Phase 60Hz Cooling Capacity CS-MKS12NB4U ×CS-MKS9NKU × CS-KS18NB4UW + CS-MKS12NB4U + CS-MKS12NB4U 30,600 BTU/h CS-MKS9NB4U × Cooling Capacity Low Ambient 15,180 18,570 19,250 25,420 19,410 19,360 24,830 19,520 24,260 30,760 22,560 28,790 22,730 Electric Wiring Diagrams Outdoor Unit CU-3KS19NBU 8FA2-5251-11800-1Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 Functions Explanation of FunctionsCool Fluctuation fan DRYLow Ambient Cooling Operation Description of function Protective FunctionsCurrent Control Automatic frequency controlLow Start Current Compressor Temperature ControlCurrent control Troubleshooting Before Calling for Service Precautions before Performing Inspection or RepairLocation of the Error Monitor Lamps Trouble Diagnosis by Error Monitor LampsDisplay of the Error Monitor Lamps Checking the Outdoor System Work procedure Check items unit operationChecking the outdoor unit Problems of Each Part and Inspection Points Trouble Diagnosis of Each PartFuse Inspection Points for Each PartOutdoor control circuit board CompressorElectric expansion valve CU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBUBreaker Branch tubing temperature sensorRefrigerant gas pressure Remedy for symptom 3 to Diagnostic procedureDiagnostic results Trouble Diagnosis of Fan MotorCharacteristics Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? Components mixing proportionsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionTo prevent the composition Amount in the charging cylinder is less than 20%Example R410A from changingWelding leaking points Case Refrigerant is LeakingRecharging Retro-Fitting Existing Systems When Tubes are ExtendedCharging Additional Refrigerant Use of Existing Units852-6-4190-581-00-1 Contents For Outdoor UnitPlease Read Before Starting Fins of the outdoor unit. You may get injured ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJGeneral For wall-mounted units Installation Site SelectionFor ceiling-mounted cassette units H1, H2, H3, H4 Connecting indoor unit for CU-3KS19NBU Connecting Indoor UnitsConnecting indoor unit for CU-4KS24NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KS31NBU CS-MKS24NKU Front Baffle Plate for the Outdoor UnitIt is recommended to use baffle plates BackAir Intake Baffle Air Discharge BafflePrecautions for installation CU-4KS24NBU Outer Dimensions of Outdoor UnitCU-3KS19NBU CU-4KS31NBUDiagram of Outdoor Unit Installation Never install only a single indoor unitFlaring Procedure with a Flare Tool Installation ProcessUse of the Flaring Method To 0.5 mm Adjust so that the amount of tube Tubing Connections For wall-mounted units Insulation of Refrigerant TubingTo prevent heat loss and wet floors due to dripping of con  For ceiling-mounted cassette unitsAir Purging Finishing the Installation Air Purging with a Vacuum Pump for Test Run External diameter of service port R410A 5/16 Adapter manual, and use the adapter correctly Pump Down What is pump-down?Pump-down procedure If pump-down is not possibleGeneral Precautions on Wiring Wiring InstructionsRecommended Wire Length and Diameter Disconnect switch may be required by national or local codes  For stranded wiring How to connect wiring to the terminalFor Outdoor Unit  For solid core wiring or F-cable For Indoor UnitIndoor unit B Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit CTest Run Checking tubing and wiringPerforming a test run Connecting a Home Automation Device Installation Check SheetDC1111-0