Panasonic CU-4KE31NBU, CU-4KE24NBU, CU-3KE19NBU service manual Wide 362

Page 48

Outdoor Unit CU-4KE31NBU

Indoor Unit CS-MKE12NB4U × 1

 

Cooling Characteristics

 

 

Heating Characteristics

 

 

 

 

 

 

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

(RH : 85%, Indoor fan speed : High fan) (230V, 60Hz)

(1) Low pressure performance chart

servicevalve

psig(MPaG)

Lo fan

Hi fan

 

Hi fan

HH fan

174

 

 

 

 

(1.2)

 

 

 

 

 

 

 

 

 

tube

 

146

 

 

 

 

wide

 

 

 

 

 

 

(1.0)

 

 

 

(30°C)

 

 

 

 

. 86°F

at

 

 

Indoor

air temp

 

 

 

 

 

Low pressure

 

 

80°F

(27°C)

 

 

118

 

 

 

 

75°F

(24°C)

 

 

(0.8)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90

 

 

 

 

 

 

(0.6)77

86

 

95

104

 

 

(25)

(30)

 

(35)

(40)

Outdoor air temperature °F (°C)

(1) High pressure performance chart

service valve

psig (MPaG)

506

 

 

 

(23°C)

 

 

 

 

(3.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

73°F

 

 

 

 

 

 

 

.

 

 

 

 

 

434

 

 

temp

 

 

 

 

 

 

air

 

 

 

 

 

(3.0)

Indoor

(21°C)

 

 

 

 

 

tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

70°F

 

 

 

 

 

 

 

 

 

(17°C)

 

 

 

 

 

wide

 

362

 

 

 

 

 

 

 

 

 

63°F

 

 

 

 

 

 

(2.5)

 

 

 

 

 

 

 

 

at

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

pressure

 

290

 

 

 

 

 

 

 

 

 

(2.0)

 

 

 

 

 

 

 

 

High

 

 

 

 

 

 

 

 

 

 

 

 

218

 

 

 

 

 

 

 

 

 

 

(1.5) 23

 

32

41

50

59

68

77

 

 

(-5)

 

(0)

(5)

(10)

(15)

(20)

(25)

Outdoor air temperature °F (°C)

(2) Operating current performance chart

 

Lo fan

Hi fan

 

Hi fan

 

HH fan

 

6

 

 

 

 

 

 

(A)

 

 

 

 

(30°C)

 

(27°C)

current

 

 

 

 

 

 

 

 

.86°F

80°F

(24°C)

 

 

air

temp

75°F

5

 

 

 

 

 

Indoor

 

 

 

 

 

Operating

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

 

 

77

86

 

95

 

 

104

 

(25)

(30)

 

(35)

 

 

(40)

Outdoor air temperature °F (°C)

(2) Operating current performance chart

 

13

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

(23°C)

 

 

 

 

(A)

11

 

 

 

73°F

 

 

 

 

current

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.

 

 

 

 

 

 

 

 

temp

 

 

 

 

 

10

 

air

 

(21°C)

 

 

 

 

 

Operating

 

 

 

 

 

 

 

 

Indoor 70°F

 

 

 

 

 

9

(17°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

63°F

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

7

23

 

32

41

50

59

68

77

 

 

 

 

(-5)

 

(0)

(5)

(10)

(15)

(20)

(25)

Outdoor air temperature °F (°C)

(3) Indoor discharge air performance chart

°F (°C)

 

Lo fan

Hi fan

Hi fan

HH fan

68.0(20)

 

 

 

64.4(18)

 

 

 

air temperature

 

 

 

60.8(16)

 

 

 

57.2(14)

 

 

 

53.6(12)

 

. 86°F

(30°C)

discharge

Indoor

air temp

 

 

 

 

(27°C)

50.0(10)

 

80°F

 

 

 

 

 

46.4(

8)

 

75°F

(24°C)

Indoor

 

 

 

42.8(

6)

 

 

 

 

 

77

86

95

104

 

 

(25)

(30)

(35)

(40)

Outdoor air temperature °F (°C)

(3) Indoor discharge air performance chart

 

140(60)

 

 

 

(23°C)

 

 

 

 

(°C)

 

 

 

 

 

 

 

 

131(55)

 

 

73°F

 

 

 

 

 

 

.

 

 

 

 

 

°F

 

 

 

temp

 

 

 

 

 

 

air

 

 

 

 

 

temperature

122(50)

 

 

 

 

 

Indoor

(21°C)

 

 

 

 

 

113(45)

70°F

(17°C)

 

 

 

 

 

 

 

 

 

 

 

 

63°F

 

 

 

 

 

 

 

 

 

 

 

104(40)

 

 

 

 

 

 

 

 

air

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

discharge

95(35)

 

 

 

 

 

 

 

 

86(30)

 

 

 

 

 

 

 

 

Indoor

 

 

 

 

 

 

 

 

77(25)

23

32

41

50

59

68

77

 

 

 

(-5)

(0)

(5)

(10)

(15)

(20)

(25)

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.

48

Image 48
Contents DC Inverter MULTI-SYSTEM AIR Conditioner Safety Precautions Prohibit Table of Contents Appendix a Wall Mounted Type Semi-Concealed TypeOperating Range Unit Specifications Outdoor Unit CU-3KE19NBUIndoor Unit CS-MKE9NKU × Duct Less Type Rated 230VOutdoor Unit Indoor Unit208V CU-4KE24NBU Running Amperes 10.1 Running Amperes 10.0 11.1 CU-4KE31NBU Running Amperes 12.3 10.3 Running Amperes 12.7 11.4 Major Component Specifications Outdoor UnitOutdoor Unit CU-4KE24NBU Outdoor Unit CU-4KE31NBU Other Component Specifications CU-3KE19NBU CU-4KE24NBU CU-4KE31NBUDimensional Data Unit inchmm 852-0-0010-20400-0 Unit inchmm 852-0-0010-20300-0 Refrigerant Flow Diagram Insulation of Refrigerant TubingIndoor unit Outdoor unit Valve Narrow tube Curve because it can cause the tube to break or crack Temperature Charts Temperature Charts CU-3KE19NBUIndoor Unit CS-MKE7NKU × F21 Heating Characteristics Outdoor Unit CU-3KE19NBU Indoor Unit CS-MKE12NKU ×Indoor Unit CS-MKE18NKU × Indoor Unit CS-MKE9NB4U × Outdoor Unit CU-3KE19NBU Indoor Unit CS-MKE12NB4U × Indoor Unit CS-KE12NB4UW × Temperature Charts CU-4KE24NBU 188 Lo fan Hi fan HH fan Outdoor Unit CU-4KE24NBU Indoor Unit CS-MKE12NKU × Indoor Unit CS-MKE18NKU × Indoor Unit CS-MKE24NKU × 23C 73F Current 21C Temp 70F 17C Air Indoor 63F Outdoor Unit CU-4KE24NBU Indoor Unit CS-MKE12NB4U × Indoor Unit CS-KE12NB4UW × Temperature Charts CU-4KE31NBU Wide 362 Pressure 290 High 218 Outdoor air temperature F C 73F 23C Temp Indoor 73F 23C Air Temp 86F 30C Temp Air Indoor 63F Wide 362 Current Cooling Capacity Indoor OutdoorPower Supply 230V Single Phase 60Hz Cooling Capacity CS-MKE12NB4U ×CS-MKE9NKU × CS-KE18NB4UW + CS-MKE12NB4U + CS-MKE12NB4U 30,600 BTU/h CS-MKE9NB4U × Cooling Capacity Low Ambient TC Total Cooling Capacity BTU/h ENT. TEMP. o F o C Ambient TEMP. o F o C 12.8 23,390 23,310 18,570 22,160 24,260 30,760 22,560 28,790 22,730 Heating Capacity TH Total Heating Capacity BTU/hPower Supply 230V Single Phase 60Hz Heating Capacity 29,200 BTU/h 28,400 BTU/h 32,000 BTU/h 000 CFM Electric Wiring Diagrams Outdoor Unit CU-3KE19NBU 8FA2-5251-11700-1Outdoor Unit CU-4KE24NBU 8FA2-5251-11500-1 Outdoor Unit CU-4KE31NBU 8FA2-5251-11300-1 Functions Explanation of FunctionsStop Cool Fluctuation fan Frequency controlFluctuation fan Low Ambient Cooling Operation Clean defrost Protective FunctionsDefrost Detection and Release Non-stop defrostingCurrent Control Description of functionAutomatic frequency control Current controlCompressor Temperature Control Reset conditionsLow Start Current Control at Heat Start-upTroubleshooting Before Calling for Service Precautions before Performing Inspection or RepairTrouble Diagnosis by Error Monitor Lamps Location of the Error Monitor LampsDisplay of the Error Monitor Lamps Work procedure Check items unit operation Checking the Outdoor SystemChecking the outdoor unit Checking the defrost operationProblems of Each Part and Inspection Points Trouble Diagnosis of Each PartInspection Points for Each Part Electric expansion valve CU-3KE19NBU MV0 MV1 MV2 CU-4KE24NBU CU-4KE31NBUBranch tubing temperature sensor BreakerRefrigerant gas pressure Diagnostic procedure Diagnostic resultsRemedy for symptom 3 to Trouble Diagnosis of Fan MotorCharacteristics of New Refrigerant R410A What is New Refrigerant R410A?Characteristics Components mixing proportionsChecklist before Servicing Tubing Installation Procedures Tools Specifically for R410AProcedure for Replacing Compressor Case of Compressor MalfunctionAmount in the charging cylinder is less than 20% ExampleTo prevent the composition R410A from changingCase Refrigerant is Leaking Welding leaking pointsRecharging When Tubes are Extended Charging Additional RefrigerantRetro-Fitting Existing Systems Use of Existing UnitsPage 852-6-4190-584-00-2 Contents For Outdoor UnitPlease Read Before Starting Fins of the outdoor unit. You may get injured ‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJGeneral Installation Site Selection Indoor UnitFor wall-mounted units For ceiling-mounted cassette unitsH1, H2, H3, H4 Connecting Indoor Units Connecting indoor unit for CU-3KE19NBUConnecting indoor unit for CU-4KE24NBU 815.88mm Locally purchased Connecting indoor unit for CU-4KE31NBU CS-MKE24NKU Baffle Plate for the Outdoor Unit It is recommended to use baffle platesFront BackAir Intake Baffle Air Discharge BafflePrecautions for installation Outer Dimensions of Outdoor Unit CU-3KE19NBUCU-4KE24NBU CU-4KE31NBUDiagram of Outdoor Unit Installation Never install only a single indoor unitInstallation Process Flaring Procedure with a Flare ToolUse of the Flaring Method To 0.5 mm Adjust so that the amount of tube Tubing ConnectionsInsulation of Refrigerant Tubing To prevent heat loss and wet floors due to dripping of con For wall-mounted units  For ceiling-mounted cassette unitsFinishing the Installation Air Purging Air Purging with a Vacuum Pump for Test Run External diameter of service port R410A 5/16 Adapter manual, and use the adapter correctlyWhat is pump-down? Pump-down procedure Pump Down If pump-down is not possibleWiring Instructions General Precautions on WiringRecommended Wire Length and Diameter Disconnect switch may be required by national or local codes How to connect wiring to the terminal For Outdoor Unit  For solid core wiring or F-cable For stranded wiring For Indoor UnitWiring Instructions for the Outdoor Unit Indoor unit DIndoor unit B Indoor unit CChecking tubing and wiring Test RunPerforming a test run Connecting a Home Automation Device Installation Check SheetDC1111-0
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CU-3KE19NBU, CU-4KE24NBU, CU-4KE31NBU specifications

The Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are high-efficiency air conditioning units that represent Panasonic's commitment to innovative climate control solutions. These models integrate advanced technologies to deliver superior performance, energy savings, and user comfort, making them ideal for both residential and commercial applications.

The CU-4KE24NBU, a part of the ECOi series, is designed for medium-sized spaces. It boasts an impressive cooling capacity, ensuring optimal temperature regulation. Its inverter technology adjusts the compressor speed according to the needs of the environment, resulting in reduced energy consumption and consistent comfort levels. The unit operates quietly, making it suitable for bedrooms, offices, or other noise-sensitive environments. Additionally, it features a robust air filtration system that improves indoor air quality by removing dust and allergens.

The CU-4KE31NBU offers a slightly higher capacity, making it perfect for larger areas. Like its counterpart, it utilizes inverter technology, which not only enhances energy efficiency but also minimizes wear and tear on the components, leading to a longer lifespan. Its multi-split capability allows for the connection of multiple indoor units to a single outdoor unit, providing flexibility in installation. The CU-4KE31NBU also integrates smart technology that allows users to control the system remotely via smartphones, giving them greater convenience and control over their environment.

For applications requiring a more compact option, the CU-3KE19NBU is an excellent choice. This model balances size and power, offering a competitive cooling capacity that can easily service small to medium-sized rooms. The unit is designed for easy installation and maintenance, featuring a lightweight construction that simplifies handling by technicians. The efficient inverter technology ensures that users benefit from lower energy bills while maintaining a consistent indoor climate.

All three models are equipped with Panasonic’s advanced refrigerants, which contribute to their eco-friendly performance. These refrigerants help reduce greenhouse gas emissions while maintaining high efficiency. Moreover, the units come with built-in diagnostic capabilities, allowing for quick detection of any issues, thus ensuring that the systems operate at peak efficiency throughout their lifespan.

In summary, the Panasonic CU-4KE24NBU, CU-4KE31NBU, and CU-3KE19NBU are exemplary air conditioning solutions that combine cutting-edge technology with user-friendly features, ensuring that they meet the varying needs of today's consumers while promoting energy efficiency and sustainability.