Panasonic CU-4KS31NBU service manual 22,560 28,790 22,730

Page 61

Outdoor Unit

: CU-4KS31NBU

 

 

 

 

 

 

 

 

Indoor Unit

: CS-MKS9NB4U × 4

 

 

 

 

 

 

Power Supply : 230V Single Phase 60Hz

 

 

 

 

 

 

 

< Cooling Capacity (Low Ambient) >

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATING CAPACITY:

28,600 BTU/h

 

AIR FLOW RATE:

883 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

 

 

28,890

28,790

28,810

28,990

28,870

 

 

72 (22.2)

SHC

 

 

22,560

28,790

22,560

22,730

22,560

 

59

76 (24.4)

SHC

 

 

25,980

28,790

25,810

25,980

25,980

 

(15.0)

80 (26.7)

SHC

 

 

28,890

28,790

28,810

28,990

28,870

 

 

84 (28.9)

SHC

 

 

28,890

28,790

28,810

28,990

28,870

 

 

88 (31.1)

SHC

 

 

28,890

28,790

28,810

28,990

28,870

 

 

 

TC

 

 

29,170

29,150

29,320

29,660

29,650

 

 

72 (22.2)

SHC

 

 

18,440

29,150

18,440

18,610

18,610

 

63

76 (24.4)

SHC

 

 

21,700

29,150

21,700

21,870

21,870

 

(17.2)

80 (26.7)

SHC

 

 

25,130

29,150

25,130

25,300

25,300

 

 

84 (28.9)

SHC

 

 

28,390

29,150

28,390

28,560

28,560

 

 

88 (31.1)

SHC

 

 

29,170

29,150

29,320

29,660

29,650

 

 

 

TC

 

 

29,210

29,310

29,650

30,210

30,330

 

 

72 (22.2)

SHC

 

 

14,160

29,310

14,330

14,500

14,500

 

67

76 (24.4)

SHC

 

 

17,410

29,310

17,580

17,760

17,930

 

(19.4)

80 (26.7)

SHC

 

 

20,840

29,310

21,010

21,180

21,360

 

 

84 (28.9)

SHC

 

 

24,100

29,310

24,270

24,440

24,610

 

 

88 (31.1)

SHC

 

 

27,360

29,310

27,530

27,870

27,870

 

 

 

TC

 

 

28,970

29,200

29,760

30,580

30,860

 

 

72 (22.2)

SHC

 

 

9,700

29,200

9,870

10,210

10,210

 

71

76 (24.4)

SHC

 

 

12,960

29,200

13,130

13,470

13,640

 

(21.7)

80 (26.7)

SHC

 

 

16,380

29,200

16,560

16,900

17,070

 

 

84 (28.9)

SHC

 

 

19,640

29,200

19,810

20,160

20,330

 

 

88 (31.1)

SHC

 

 

22,900

29,200

23,240

23,410

23,580

 

 

 

TC

 

 

28,440

28,820

29,620

30,720

31,170

 

75

76 (24.4)

SHC

 

 

8,500

28,820

9,010

9,360

9,530

 

(23.9)

80 (26.7)

SHC

 

 

11,930

28,820

12,440

12,780

12,960

 

 

84 (28.9)

SHC

 

 

15,360

28,820

15,700

16,040

16,210

 

 

88 (31.1)

SHC

 

 

18,610

28,820

18,960

19,300

19,470

 

 

 

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 Semi-Concealed Type Wall Mounted TypeOperating Range Outdoor Unit CU-3KS19NBU Unit SpecificationsIndoor Unit CS-MKS9NKU × Duct Less Type RatedIndoor 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 Insulation of Refrigerant Tubing Refrigerant Flow DiagramIndoor unit 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 × 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 Current Control Protective FunctionsDescription of function Automatic frequency controlLow Start Current Compressor Temperature ControlCurrent control Precautions before Performing Inspection or Repair Troubleshooting Before Calling for ServiceLocation 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 Trouble Diagnosis of Each Part Problems of Each Part and Inspection PointsOutdoor control circuit board Inspection Points for Each PartFuse CompressorCU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBU Electric expansion valveBreaker Branch tubing temperature sensorRefrigerant gas pressure Diagnostic results Diagnostic procedureRemedy for symptom 3 to Trouble Diagnosis of Fan MotorWhat is New Refrigerant R410A? Characteristics of New Refrigerant R410ACharacteristics Components mixing proportionsChecklist before Servicing Tools Specifically for R410A Tubing Installation ProceduresCase of Compressor Malfunction Procedure for Replacing CompressorExample Amount in the charging cylinder is less than 20%To prevent the composition R410A from changingWelding leaking points Case Refrigerant is LeakingRecharging Charging Additional Refrigerant When Tubes are ExtendedRetro-Fitting Existing Systems Use of Existing Units852-6-4190-581-00-1 For Outdoor Unit ContentsPlease Read Before Starting ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ Fins of the outdoor unit. You may get injuredGeneral 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 It is recommended to use baffle plates Baffle Plate for the Outdoor UnitFront BackAir Discharge Baffle Air Intake BafflePrecautions for installation CU-3KS19NBU Outer Dimensions of Outdoor UnitCU-4KS24NBU CU-4KS31NBUNever install only a single indoor unit Diagram of Outdoor Unit InstallationFlaring Procedure with a Flare Tool Installation ProcessUse of the Flaring Method Tubing Connections To 0.5 mm Adjust so that the amount of tubeTo prevent heat loss and wet floors due to dripping of con Insulation of Refrigerant Tubing For wall-mounted units  For ceiling-mounted cassette unitsAir Purging Finishing the Installation Air Purging with a Vacuum Pump for Test Run Adapter manual, and use the adapter correctly External diameter of service port R410A 5/16Pump-down procedure What is pump-down? Pump Down 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 Outdoor Unit  For solid core wiring or F-cable How to connect wiring to the terminal For stranded wiring For Indoor UnitIndoor unit D Wiring Instructions for the Outdoor UnitIndoor unit B Indoor unit CTest Run Checking tubing and wiringPerforming a test run Installation Check Sheet Connecting a Home Automation DeviceDC1111-0