Panasonic CU-4KS31NBU service manual 19,360 24,830 19,520

Page 59

Outdoor Unit

: CU-4KS24NBU

 

 

 

 

 

 

 

 

Indoor Unit

: CS-KS18NB4UW + CS-MKS12NB4U + CS-MKS12NB4U

 

 

 

Power Supply : 230V Single Phase 60Hz

 

 

 

 

 

 

 

< Cooling Capacity (Low Ambient) >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATING CAPACITY:

24,800 BTU/h

 

AIR FLOW RATE:

812 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

 

 

24,890

24,830

24,880

25,090

25,020

 

 

72 (22.2)

SHC

 

 

19,360

24,830

19,360

19,520

19,520

 

59

76 (24.4)

SHC

 

 

22,200

24,830

22,200

22,200

22,200

 

(15.0)

80 (26.7)

SHC

 

 

24,890

24,830

24,880

25,090

25,020

 

 

84 (28.9)

SHC

 

 

24,890

24,830

24,880

25,090

25,020

 

 

88 (31.1)

SHC

 

 

24,890

24,830

24,880

25,090

25,020

 

 

 

TC

 

 

25,020

25,050

25,250

25,620

25,660

 

 

72 (22.2)

SHC

 

 

15,730

25,050

15,890

16,050

16,050

 

63

76 (24.4)

SHC

 

 

18,570

25,050

18,570

18,730

18,890

 

(17.2)

80 (26.7)

SHC

 

 

21,410

25,050

21,570

21,730

21,730

 

 

84 (28.9)

SHC

 

 

24,250

25,050

24,250

24,410

24,570

 

 

88 (31.1)

SHC

 

 

25,020

25,050

25,250

25,620

25,660

 

 

 

TC

 

 

24,930

25,080

25,450

26,030

26,200

 

 

72 (22.2)

SHC

 

 

12,100

25,080

12,260

12,420

12,580

 

67

76 (24.4)

SHC

 

 

14,790

25,080

15,100

15,260

15,420

 

(19.4)

80 (26.7)

SHC

 

 

17,780

25,080

17,940

18,260

18,260

 

 

84 (28.9)

SHC

 

 

20,460

25,080

20,780

20,940

21,100

 

 

88 (31.1)

SHC

 

 

23,300

25,080

23,460

23,780

23,780

 

 

 

TC

 

 

24,560

24,850

25,440

26,280

26,600

 

 

72 (22.2)

SHC

 

 

8,160

24,850

8,480

8,790

8,950

 

71

76 (24.4)

SHC

 

 

11,000

24,850

11,320

11,630

11,630

 

(21.7)

80 (26.7)

SHC

 

 

13,840

24,850

14,160

14,470

14,630

 

 

84 (28.9)

SHC

 

 

16,680

24,850

16,990

17,310

17,310

 

 

88 (31.1)

SHC

 

 

19,360

24,850

19,680

19,990

20,150

 

 

 

TC

 

 

23,930

24,370

25,200

26,320

26,810

 

75

76 (24.4)

SHC

 

 

7,220

24,370

7,690

8,000

8,160

 

(23.9)

80 (26.7)

SHC

 

 

10,050

24,370

10,530

10,840

11,000

 

 

84 (28.9)

SHC

 

 

12,890

24,370

13,370

13,680

13,840

 

 

88 (31.1)

SHC

 

 

15,730

24,370

16,050

16,520

16,680

 

 

 

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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Image 59
Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Semi-Concealed Type Wall Mounted TypeOperating Range Duct Less Type Rated Unit SpecificationsOutdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU ×Indoor Unit Outdoor 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 Outdoor Unit Major Component SpecificationsOutdoor Unit CU-4KS24NBU Outdoor Unit CU-4KS31NBU CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Other Component SpecificationsDimensional Data Unit inchmm 852-0-0010-20500-0 Unit inchmm 852-0-0010-20600-0 Outdoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Indoor unitIndoor unit Outdoor unit 1/4 Strainer Header Sub Main Compressor Accumulator Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS7NKU × Temperature ChartsTemperature Charts CU-3KS19NBU Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU × Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS12NKU × Cooling CharacteristicsOutdoor 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 × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU × Temperature Charts CU-4KS24NBUOutdoor 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 × Indoor Outdoor Cooling CapacityCS-MKS12NB4U × Power Supply 230V Single Phase 60Hz Cooling CapacityCS-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 Outdoor Unit CU-3KS19NBU 8FA2-5251-11800-1 Electric Wiring DiagramsOutdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 Explanation of Functions FunctionsCool DRY Fluctuation fanLow Ambient Cooling Operation Automatic frequency control Protective FunctionsCurrent Control Description of functionCurrent control Compressor Temperature ControlLow Start Current Precautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceDisplay of the Error Monitor Lamps Trouble Diagnosis by Error Monitor LampsLocation of the Error Monitor Lamps Checking the outdoor unit Work procedure Check items unit operationChecking the Outdoor System Trouble Diagnosis of Each Part Problems of Each Part and Inspection PointsCompressor Inspection Points for Each PartOutdoor control circuit board FuseCU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBU Electric expansion valveRefrigerant gas pressure Branch tubing temperature sensorBreaker Trouble Diagnosis of Fan Motor Diagnostic procedureDiagnostic results Remedy for symptom 3 toComponents mixing proportions Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? CharacteristicsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorR410A from changing Amount in the charging cylinder is less than 20%Example To prevent the compositionRecharging Case Refrigerant is LeakingWelding leaking points Use of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing Systems852-6-4190-581-00-1 For Outdoor Unit ContentsPlease Read Before Starting ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ Fins of the outdoor unit. You may get injuredGeneral For ceiling-mounted cassette units Installation Site SelectionFor wall-mounted units H1, H2, H3, H4 Connecting indoor unit for CU-4KS24NBU Connecting Indoor UnitsConnecting indoor unit for CU-3KS19NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KS31NBU CS-MKS24NKU Back Baffle Plate for the Outdoor UnitIt is recommended to use baffle plates FrontAir Discharge Baffle Air Intake BafflePrecautions for installation CU-4KS31NBU Outer Dimensions of Outdoor UnitCU-3KS19NBU CU-4KS24NBUNever install only a single indoor unit Diagram of Outdoor Unit InstallationUse of the Flaring Method Installation ProcessFlaring Procedure with a Flare Tool Tubing Connections To 0.5 mm Adjust so that the amount of tube For ceiling-mounted cassette units Insulation of Refrigerant TubingTo prevent heat loss and wet floors due to dripping of con  For wall-mounted units Air Purging with a Vacuum Pump for Test Run Finishing the InstallationAir Purging Adapter manual, and use the adapter correctly External diameter of service port R410A 5/16If pump-down is not possible What is pump-down?Pump-down procedure  Pump DownRecommended Wire Length and Diameter Wiring InstructionsGeneral Precautions on Wiring Disconnect switch may be required by national or local codes For Indoor Unit How to connect wiring to the terminalFor Outdoor Unit  For solid core wiring or F-cable  For stranded wiringIndoor unit C Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit BPerforming a test run Checking tubing and wiringTest Run Installation Check Sheet Connecting a Home Automation DeviceDC1111-0