Panasonic CU-4KS31NBU service manual Cooling Capacity, Indoor Outdoor

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5-2. Cooling Capacity

Outdoor Unit : CU-3KS19NBU

Indoor Unit : CS-MKS9NKU × 3

Power Supply : 230V Single Phase 60Hz

< Cooling Capacity >

RATING CAPACITY:

18,800 BTU/h

 

AIR FLOW RATE:

777 CFM

INDOOR

 

 

 

 

OUTDOOR

 

 

 

 

ENT. TEMP. o F (o C)

 

 

AMBIENT TEMP. o F (o C)

 

 

WB

 

DB

 

65

75

85

 

95

105

115

 

 

 

 

(18.3)

(23.9)

(29.4)

 

(35.0)

(40.6)

(46.1)

 

 

 

TC

18,880

18,230

17,540

 

16,990

16,170

15,290

 

72

(22.2)

SHC

16,240

15,940

15,630

 

15,330

15,030

14,580

59

76

(24.4)

SHC

18,800

18,230

17,540

 

16,990

16,170

15,290

(15.0)

80

(26.7)

SHC

18,880

18,230

17,540

 

16,990

16,170

15,290

 

84

(28.9)

SHC

18,880

18,230

17,540

 

16,990

16,170

15,290

 

88

(31.1)

SHC

18,880

18,230

17,540

 

16,990

16,170

15,290

 

 

 

TC

19,800

19,130

18,420

 

17,880

17,030

16,120

 

72

(22.2)

SHC

13,220

12,920

12,620

 

12,470

12,010

11,710

63

76

(24.4)

SHC

15,940

15,630

15,330

 

15,030

14,730

14,430

(17.2)

80

(26.7)

SHC

18,650

18,350

18,050

 

17,880

17,030

16,120

 

84

(28.9)

SHC

19,800

19,130

18,420

 

17,880

17,030

16,120

 

88

(31.1)

SHC

19,800

19,130

18,420

 

17,880

17,030

16,120

 

 

 

TC

20,730

20,050

19,320

 

#

18,800

17,920

16,970

 

72

(22.2)

SHC

10,200

9,900

9,750

 

9,450

9,150

8,840

67

76

(24.4)

SHC

12,920

12,620

12,310

 

12,160

11,860

11,560

(19.4)

80

(26.7)

SHC

15,630

15,480

15,180

 

15,030

14,580

14,280

 

84

(28.9)

SHC

18,350

18,050

17,900

 

17,600

17,290

16,970

 

88

(31.1)

SHC

20,730

20,050

19,320

 

18,800

17,920

16,970

 

 

 

TC

21,650

20,970

20,220

 

19,730

18,830

17,850

 

72

(22.2)

SHC

7,030

6,880

6,580

 

6,430

6,130

5,830

71

76

(24.4)

SHC

9,750

9,450

9,300

 

9,000

8,690

8,390

(21.7)

80

(26.7)

SHC

12,470

12,310

12,010

 

11,860

11,560

11,260

 

84

(28.9)

SHC

15,180

15,030

14,730

 

14,580

14,280

13,970

 

88

(31.1)

SHC

17,900

17,600

17,440

 

17,140

16,840

16,540

 

 

 

TC

22,470

21,780

21,020

 

20,570

19,650

18,620

75

76

(24.4)

SHC

6,580

6,430

6,280

 

6,130

5,830

5,530

(23.9)

80

(26.7)

SHC

9,450

9,300

9,000

 

8,840

8,540

8,240

 

84

(28.9)

SHC

12,160

11,860

11,710

 

11,560

11,260

10,960

 

88

(31.1)

SHC

14,880

14,580

14,430

 

14,280

13,970

13,670

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.

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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 Outdoor Unit CU-3KS19NBU Indoor Unit CS-MKS7NKU × Temperature ChartsTemperature Charts CU-3KS19NBU 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 controlCurrent control Compressor Temperature ControlLow Start Current Troubleshooting Before Calling for Service Precautions before Performing Inspection or RepairDisplay 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 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-4KS31NBURefrigerant gas pressure Branch tubing temperature sensorBreaker 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 changingRecharging Case Refrigerant is LeakingWelding leaking points 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 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 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 unitUse of the Flaring Method Installation ProcessFlaring Procedure with a Flare Tool 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 units Air Purging with a Vacuum Pump for Test Run Finishing the InstallationAir Purging 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 possibleRecommended Wire Length and Diameter Wiring InstructionsGeneral Precautions on Wiring 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 CPerforming a test run Checking tubing and wiringTest Run Connecting a Home Automation Device Installation Check SheetDC1111-0