Panasonic CU-4KS31NBU service manual Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS18NKU ×

Page 37

Outdoor Unit CU-4KS24NBU Indoor Unit CS-MKS18NKU × 1

Cooling Characteristics

(RH : 46%, Indoor fan speed : High fan) (230V, 60Hz)

(1) Low pressure performance chart

servicevalve

psig(MPaG)

 

Lo fan

 

Hi fan

 

 

HH fan

174

 

 

 

 

 

 

 

 

 

 

(1.2)

 

 

 

 

.86°F

(30°C)

 

 

 

 

 

 

 

 

 

air

temp

 

 

 

Indoor

 

 

 

tube

 

 

 

 

 

 

 

160

 

 

80°F

(27°C)

 

wide

 

(1.1)

 

 

 

 

 

 

 

 

 

(24°C)

 

 

 

 

 

 

 

 

 

 

 

75°F

 

 

at

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low pressure

 

146

 

 

 

 

 

 

 

(1.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

132

 

 

 

 

 

 

 

 

(0.9)77

 

86

 

 

95

104

 

 

(25)

 

(30)

 

 

(35)

(40)

Outdoor air temperature °F (°C)

(2) Operating current performance chart

 

8

 

 

 

 

 

Lo fan

 

Hi fan

 

HH fan

(A)

7

 

 

 

 

 

 

 

 

 

current

 

 

 

.86°F

(30°C)

 

 

 

 

 

 

 

temp

 

Operating

 

 

air

 

6

 

 

 

 

Indoor

 

 

 

 

 

 

 

 

(27°C)

 

 

 

80°F

 

 

 

5

 

(24°C)

 

 

 

75°F

 

 

 

77

86

 

95

104

 

(25)

(30)

 

(35)

(40)

Outdoor air temperature °F (°C)

(3) Indoor discharge air performance chart

(°C)

 

Lo fan

 

Hi fan

 

HH fan

68.0(20)

 

 

 

 

 

°F

 

 

 

 

 

 

 

 

 

 

 

 

temperature

64.4(18)

 

 

 

 

 

60.8(16)

 

 

 

. 86°F

(30°C)

 

 

 

Indoor

air temp

 

air

57.2(14)

 

 

 

 

 

discharge

 

 

(27°C)

 

 

 

 

80°F

 

 

 

 

 

 

 

53.6(12)

 

 

 

 

 

 

 

 

75°F

(24°C)

 

50.0(10)

 

 

 

 

Indoor

 

 

 

 

 

46.4(

8)

 

 

 

 

 

 

 

 

 

 

 

 

 

77

86

 

 

95

104

 

 

(25)

(30)

 

 

(35)

(40)

Outdoor air temperature °F (°C)

NOTE

This performance chart shows operation of a single wall-mounted indoor unit. The performance chart will vary depending on the indoor unit type.

Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. (In this case, be sure to stop all the indoor units where performance is not being checked.)

The performance is for a tubing length of 24.6ft (7.5m). If the tubing length is different, the performance chart will vary.

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Image 37
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