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Panasonic Appendix A Installation Instructions, CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU

Models: CU-4KS31NBU

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APPENDIX A INSTALLATION INSTRUCTIONS

CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU

(852-6-4190-581-00-1)

A-1

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Panasonic service manual Appendix A Installation Instructions, CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU

Contents

TECHNICAL & SERVICE MANUAL OUTDOOR UNIT : CU-3KS19NBU CU-4KS24NBUCU-4KS31NBU Pay special attention when servicing the unitSAFETY PRECAUTIONS which may cause a unit breakdown REFRIGERANT FLOW DIAGRAM Table of ContentsSPECIFICATIONS APPLICABLE INDOOR UNITSAPPENDIX A SPECIAL PRECAUTIONS WHEN SERVICING UNIT9. REFRIGERANT R410A Semi-ConcealedType APPLICABLE INDOOR UNITSWall Mounted Type Indoor Air Intake Temp 1. OPERATING RANGETemperature Outdoor Air Intake TempType 2. SPECIFICATIONS2-1.Unit Specifications Number of Connectable Indoor UnitsNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingNumber of Operatable Indoor Units TypeNumber of Connectable Indoor Units Voltage RatingControl PCB 2-2.Major Component Specifications2-2-1.Outdoor Unit CompressorFan Motor Control PCBCompressor Heat Exchanger CoilFan Motor Control PCBCompressor Heat Exchanger CoilTemperature F C 2-3.Other Component SpecificationsTemperature F C Resistance k ohm3. DIMENSIONAL DATA Unit: inchmm 852-0-0010-11500-0Unit: inchmm 852-0-0010-20500-0 Unit: inchmm 852-0-0010-20600-0 Insulation of Refrigerant Tubing 4. REFRIGERANT FLOW DIAGRAM4-1.Refrigerant Flow Diagram Outdoor unit Insulation of Refrigerant TubingIndoor unit Outdoor unit Insulation of Refrigerant TubingIndoor unit 5. PERFORMANCE DATA 5-1.Temperature Charts5-1-1.Temperature 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× Page Page 5-1-2.Temperature Charts CU-4KS24NBU Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU×2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chartCooling Characteristics Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS12NKU×2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chartOutdoor Unit CU-4KS24NBU Indoor Unit CS-MKS24NKU× 2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chart2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chart2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chart1 Low pressure performance chart 5-1-3.Temperature Charts CU-4KS31NBUCooling Characteristics 2 Operating current performance chart2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chartOutdoor Unit CU-4KS31NBU Indoor Unit CS-MKS12NKU× 2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chartOutdoor Unit CU-4KS31NBU Indoor Unit CS-MKS24NKU× 2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chart2 Operating current performance chart Cooling Characteristics1 Low pressure performance chart 3 Indoor discharge air performance chartPage Outdoor Unit : CU-3KS19NBU 5-2.Cooling CapacityPower Supply : 230V Single Phase 60Hz Indoor Unit : CS-MKS9NKU×CU-3KS19NBU CS-MKS12NB4U×CU-4KS24NBU CS-MKS9NKU ×CU-4KS24NBU CS-KS18NB4UW+ CS-MKS12NB4U+ CS-MKS12NB4UCU-4KS31NBU CS-MKS9NKU ×CU-4KS31NBU CS-MKS9NB4U×Outdoor Unit : CU-3KS19NBU 5-3.Cooling Capacity Low AmbientPower Supply : 230V Single Phase 60Hz Indoor Unit : CS-MKS9NKU×CU-3KS19NBU CS-MKS12NB4U×CU-4KS24NBU CS-MKS9NKU ×CU-4KS24NBU CS-KS18NB4UW+ CS-MKS12NB4U+ CS-MKS12NB4UCU-4KS31NBU CS-MKS9NKU ×CU-4KS31NBU CS-MKS9NB4U×6-1.Electric Wiring Diagrams 6. ELECTRICAL DATAOutdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 7. FUNCTIONS 7-1.Explanation of FunctionsExplanation Control/conditionsUnit operation COOLUnit operation 1/f fluctuation fanControl/conditions Explanation< Low Ambient Cooling Operation > 7-2.Protective Functions 7-2-1.Current ControlLow Start Current 7-2-3.Compressor Temperature Control7-2-2 2 Current control8. TROUBLESHOOTING BEFORE CALLING FOR SERVICE 8-2-2.Display of the Error Monitor Lamps 8-2.Trouble Diagnosis by Error Monitor Lamps8-2-1.Location of the Error Monitor Lamps 8-3.Checking the Outdoor System 8-3-1.Checking the outdoor unit8-4-1.Problems of Each Part and Inspection Points 8-4.Trouble Diagnosis of Each Part2 Fuse 8-4-2.Inspection Points for Each Part1 Outdoor control circuit board 3 Compressor6 Electric expansion valve 9 Refrigerant gas pressure 7 Branch tubing temperature sensor8 Breaker Diagnostic results 8-5.Trouble Diagnosis of Fan MotorDiagnostic procedure Remedy for symptom 3 to9-1-1.What is New Refrigerant R410A? SPECIAL PRECAUTIONS WHEN SERVICING UNIT9-1.Characteristics of New Refrigerant R410A 9-1-3.CharacteristicsSize of flare 9-2.Checklist before ServicingTubing precautions No addition of compressor oil for R410A9-4.Tubing Installation Procedures 9-3.Tools Specifically for R410A9-5-1.Procedure for Replacing Compressor 9-5.In Case of Compressor MalfunctionPage 9-6.In Case Refrigerant is Leaking 9-8. Retro-FittingExisting Systems 9-7-1.When Tubes are Extended9-7.Charging Additional Refrigerant 9-8-1.Use of Existing UnitsAPPENDIX A INSTALLATION INSTRUCTIONS CU-3KS19NBU CU-4KS24NBU CU-4KS31NBUContents For Outdoor UnitWARNING When Wiring SPECIAL PRECAUTIONSIn Case of Improper Installation When Transporting‡RQRWLQVWDOORQO\DVLQJOHLQGRRUXQLW When ServicingOthers fins of the outdoor unit. You may get injured1. General 2. Installation Site Selection Limit of Elevation Max. Allowable TotalLimit of Required AmountOutdoor unit Outdoor unitIndoor unit 3/89.52mmOutdoor unit Outdoor unitIndoor unit Indoor unitOutdoor unit Outdoor unitIndoor unit Indoor unit5/815.88mm Outdoor unitIndoor unit CS-MKS24NKUAbout Dimensions Air Intake BaffleAir Discharge Baffle Dimensions1. Air Intake Baffle 3 Installation procedure4 Precautions for installation 2. Air Discharge BaffleFig. 6a unit: inch mm2-5.Outer Dimensions of Outdoor Unit Fig. 6bIndoor unit C Indoor unit B 2-6. Diagram of Outdoor Unit InstallationIndoor unit D Indoor unit C Indoor unit B3. Installation Process 3-1. Embedding the Tubing and WiringFig. D C B3-4.Caution before Connecting Tubes Tightly Fig.3-6.Insulation of Refrigerant Tubing 4. Air Purging Air Purging with a Vacuum Pump for Test RunTable adapter manual, and use the adapter correctlyFig. Pump Down gas without releasing it into the atmosphere5-2.Recommended Wire Length and Diameter 5. Wiring Instructions5-1.General Precautions on Wiring TableEach wire must be firmly connected 5-4.How to Connect Wiring to the Terminal 5-5.Wiring Instructions for the Outdoor Unit Fig.Performing a test run 6. Test RunChecking tubing and wiring Fig.7. Connecting a Home Automation Device 8. Installation Check SheetDC1111-0