852-6-4190-581-00-1 | Panasonic CU-4KS31NBU instruction

APPENDIX A INSTALLATION INSTRUCTIONS

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

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

A-1

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Panasonic CU-4KS31NBU service manual 852-6-4190-581-00-1

Contents

DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Wall Mounted Type Semi-Concealed Type Operating Range Indoor Unit CS-MKS9NKU × Unit SpecificationsOutdoor Unit CU-3KS19NBU Duct Less Type Rated Outdoor Unit Indoor Unit 208V 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 Unit Outdoor Unit CU-4KS24NBU Outdoor Unit CU-4KS31NBU Other Component Specifications CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Dimensional Data Unit inchmm 852-0-0010-20500-0 Unit inchmm 852-0-0010-20600-0 Indoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Outdoor unit Indoor 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 Outdoor Power 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 8FA2-5251-11800-1 Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 Functions Explanation of Functions Cool Fluctuation fan DRY Low Ambient Cooling Operation Description of function Protective FunctionsCurrent Control Automatic frequency control Current control Compressor Temperature ControlLow Start Current Troubleshooting Before Calling for Service Precautions before Performing Inspection or Repair Display 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 Part Fuse Inspection Points for Each PartOutdoor control circuit board Compressor Electric expansion valve CU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBU Refrigerant gas pressure Branch tubing temperature sensorBreaker Remedy for symptom 3 to Diagnostic procedureDiagnostic results Trouble Diagnosis of Fan Motor Characteristics Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? Components mixing proportions Checklist before Servicing Tubing Installation Procedures Tools Specifically for R410A Procedure for Replacing Compressor Case of Compressor Malfunction To prevent the composition Amount in the charging cylinder is less than 20%Example R410A from changing Recharging Case Refrigerant is LeakingWelding leaking points Retro-Fitting Existing Systems When Tubes are ExtendedCharging Additional Refrigerant Use of Existing Units 852-6-4190-581-00-1 Contents For Outdoor Unit Please Read Before Starting Fins of the outdoor unit. You may get injured ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ General 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 Back Air Intake Baffle Air Discharge Baffle Precautions for installation CU-4KS24NBU Outer Dimensions of Outdoor UnitCU-3KS19NBU CU-4KS31NBU Diagram of Outdoor Unit Installation Never install only a single indoor unit Use 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 possible Recommended 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 Unit Indoor unit B Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit C Performing a test run Checking tubing and wiringTest Run Connecting a Home Automation Device Installation Check Sheet DC1111-0