Operating Range | Panasonic CU-4KS31NBU specification

1. OPERATING RANGE

		Temperature	Indoor Air Intake Temp.	Outdoor Air Intake Temp.

	Cooling	Maximum	95 °F DB / 71 °F WB	115	°F DB

		Minimum	67 °F DB / 57 °F WB	14	°F DB
		Minimum	67 °F DB / 57 °F WB	14	°F DB

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Panasonic CU-4KS31NBU service manual Operating Range

Contents

DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Semi-Concealed Type Wall Mounted Type Operating Range Duct Less Type Rated Unit SpecificationsOutdoor Unit CU-3KS19NBU Indoor Unit CS-MKS9NKU × Indoor Unit Outdoor 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 Outdoor Unit Major Component Specifications Outdoor Unit CU-4KS24NBU Outdoor Unit CU-4KS31NBU CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Other Component Specifications Dimensional Data Unit inchmm 852-0-0010-20500-0 Unit inchmm 852-0-0010-20600-0 Outdoor unit Refrigerant Flow DiagramInsulation of Refrigerant Tubing Indoor unit Indoor 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 Characteristics 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 × Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS7NKU × Temperature Charts CU-4KS24NBU 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 × Indoor Outdoor Cooling Capacity CS-MKS12NB4U × Power Supply 230V Single Phase 60Hz Cooling Capacity 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 Outdoor Unit CU-3KS19NBU 8FA2-5251-11800-1 Electric Wiring Diagrams Outdoor Unit CU-4KS24NBU 8FA2-5251-11600-1 Outdoor Unit CU-4KS31NBU 8FA2-5251-11400-1 Explanation of Functions Functions Cool DRY Fluctuation fan Low Ambient Cooling Operation Automatic frequency control Protective FunctionsCurrent Control Description of function Low Start Current Compressor Temperature ControlCurrent control Precautions before Performing Inspection or Repair Troubleshooting Before Calling for Service Location 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 Points Compressor Inspection Points for Each PartOutdoor control circuit board Fuse CU-3KS19NBU MV0 MV1 MV2 CU-4KS24NBU MV3 CU-4KS31NBU Electric expansion valve Breaker Branch tubing temperature sensorRefrigerant gas pressure Trouble Diagnosis of Fan Motor Diagnostic procedureDiagnostic results Remedy for symptom 3 to Components mixing proportions Characteristics of New Refrigerant R410AWhat is New Refrigerant R410A? Characteristics Checklist before Servicing Tools Specifically for R410A Tubing Installation Procedures Case of Compressor Malfunction Procedure for Replacing Compressor R410A from changing Amount in the charging cylinder is less than 20%Example To prevent the composition Welding leaking points Case Refrigerant is LeakingRecharging Use of Existing Units When Tubes are ExtendedCharging Additional Refrigerant Retro-Fitting Existing Systems 852-6-4190-581-00-1 For Outdoor Unit Contents Please Read Before Starting ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ Fins of the outdoor unit. You may get injured General 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 Back Baffle Plate for the Outdoor UnitIt is recommended to use baffle plates Front Air Discharge Baffle Air Intake Baffle Precautions for installation CU-4KS31NBU Outer Dimensions of Outdoor UnitCU-3KS19NBU CU-4KS24NBU Never install only a single indoor unit Diagram of Outdoor Unit Installation Flaring Procedure with a Flare Tool Installation ProcessUse of the Flaring Method 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 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 5/16 If pump-down is not possible What is pump-down?Pump-down procedure Pump Down General Precautions on Wiring Wiring InstructionsRecommended Wire Length and Diameter 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 wiring Indoor unit C Wiring Instructions for the Outdoor UnitIndoor unit D Indoor unit B Test Run Checking tubing and wiringPerforming a test run Installation Check Sheet Connecting a Home Automation Device DC1111-0