Kentatsu KRFN220CFAN3 Service Manual
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Kentatsu KRFN220CFAN3 Service Manual

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Библиотека СОК 
DK16-01.01.34
Service manual
Rooftop
KRFN220CFAN3
KRFN260CFAN3
KRFN300CFAN3
KRFN350CFAN3
KRFN440CFAN3
KRFN530CFAN3
KRFN600CFAN3
KRFN700CFAN3
KRFN880CFAN3
KRFN1050CFAN3
Kentatsu Denki Co, Ltd.
2016

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  • Page 1 Библиотека СОК  DK16-01.01.34 Service manual Rooftop KRFN220CFAN3 KRFN260CFAN3 KRFN300CFAN3 KRFN350CFAN3 KRFN440CFAN3 KRFN530CFAN3 KRFN600CFAN3 KRFN700CFAN3 KRFN880CFAN3 KRFN1050CFAN3 Kentatsu Denki Co, Ltd. 2016...
  • Page 2 Kentatsu Rooftop KRFN Content Part. 1 General information ....... 3   Part. 2 Performances ......... 6   Part. 3 Installations ........ 100                                    ...
  • Page 3 Rooftop KRFN Kentatsu Part. 1 General information   1. Product lineup ................. 4  2. Nomenclature ................5                                               ...
  • Page 4 Kentatsu Rooftop KRFN 1. Product lineup Nominal ton Model Function Air outlet Power supply KRFN220CFAN3 Cooling only Side discharge 6.25 KRFN260CFAN3 Cooling only Side discharge KRFN300CFAN3 Cooling only Side discharge KRFN350CFAN3 Cooling only Side discharge 12.5 KRFN440CFAN3 Cooling only Side discharge...
  • Page 5 T - канальный высоконапорный (свыше 100 Па); V - кассетный четырехпоточный; Y - кассетный однопоточный; Z - кассетный 600х600. Наружный: U - универсальный с воздушным охлаждением Вид климатической техники: R – крышный кондиционер. Символ бренда (производителя): К - KENTATSU General Information...

  • Page 6: Table Of Contents

    Kentatsu Rooftop KRFN Part. 2 Performances   1.  Features ................7  2.  Specifications ..............9  3.  Dimensions drawings ............. 27  4.  Wiring diagrams .............. 38  5.  Performance data ............46  6.  Electrical data ..............76  7.  Fan performance data ............. 77 ...

  • Page 7: Features

    Rooftop KRFN Kentatsu 1. Features  Design flexibility. Compact design and flanges of air flow inlet and outlet as standard. It is suitable for installation in rooftop and ground.  Durable construction. Pre-painted exterior cabinet panels pass 1000 hours salt spray test for durability.
  • Page 8 If the unit is in running with abnormal operation, the LED display will show the error code.  Wired controller as standard. Besides Kentatsu controller, other brand thermostat can be matched as optional solution. ...

  • Page 9: Specifications

    Rooftop KRFN Kentatsu 2. Specifications Nominal ton (Ton) Model KRFN220CFAN3 KRFN260CFAN3 Power supply 380~415V, 3Ph, 50Hz 380~415V, 3Ph, 50Hz Btu/h 75,000 89,000 Cooling capacity Cooling 1 22.0 26.0 Power input Btu/h 61,400 69,600 Cooling capacity Cooling 2 18.0 20.4 Power input Max.
  • Page 10 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN220CFAN3 KRFN260CFAN3 Type Axial Axial Quantity Drive type Direct Direct Motor quantity Outdoor fan Motor model YDK450-6C YDK580-6C Motor capacitor 25µF/450V 25µF/450V Motor input 757/403 820/505 Fan speed 840/550 870/640 Type R410A...
  • Page 11 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN300CFAN3 Power Supply 380~415V, 3Ph, 50Hz Btu/h 102,000 Cooling capacity Cooling 1 30.0 Power input Btu/h 80,700 Cooling capacity Cooling 2 23.7 Power input 10.3 Max. input consumption 14.8 Max. current 29.2 Indoor air flow 3,500 Default: 80;...
  • Page 12 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN300CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YDK580-6C Motor capacitor 25µF/450V Motor input 820/505 Fan speed 870/640 Type R410A Refrigerant Volume 2.25+2.25 Control Throttle valve Wired controller...
  • Page 13 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN350CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 120,000 Cooling capacity Cooling 1 35.0 Power input 10.7 Btu/h 100,200 Cooling capacity Cooling 2 29.4 Power input 12.6 Max. input consumption 18.0 Max. current 34.1...
  • Page 14 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN350CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YS1100-6P Motor capacitor Motor input Fan speed 1,120/965 Type R410A Refrigerant Volume 2.35+2.35 Control Throttle valve Wired controller KWC-22...
  • Page 15 Rooftop KRFN Kentatsu Nominal ton (Ton) 12.5 Model KRFN440CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 150,000 Cooling capacity Cooling 1 44.0 Power input 13.3 Btu/h 125,400 Cooling capacity Cooling 2 36.8 Power input 16.1 Max. input consumption 21.0 Max. current 41.2...
  • Page 16 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) 12.5 Model KRFN440CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YDK550-6E Motor capacitor 25µF/450V Motor input 740/640 Fan speed 880/810 Type R410A Refrigerant Volume 2.8+1.7 Control Throttle valve...
  • Page 17 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN530CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 180,000 Cooling capacity Cooling 1 53.0 Power input 16.7 Btu/h 146,000 Cooling capacity Cooling 2 42.8 Power input 18.7 Max. input consumption 25.0 Max. current 48.0...
  • Page 18 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN530CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YS1100-6 Motor capacitor Motor input Fan speed 1,120/965 Type R410A Refrigerant Volume 4.9+2.25 Control Throttle valve Wired controller KWC-22...
  • Page 19 Rooftop KRFN Kentatsu Nominal ton (Ton) 17.5 Model KRFN600CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 208,000 Cooling capacity Cooling 1 61.0 Power input 19.1 Btu/h 181,100 Cooling capacity Cooling 2 53.1 Power input 22.6 Max. input consumption 26.5 Max. current 55.0...
  • Page 20 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) 17.5 Model KRFN600CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YDK550-6E Motor capacitor 25µF/450V Motor input 740/640 Fan speed 880/810 Type R410A Refrigerant Volume 3.7+3.7 Control Throttle valve...
  • Page 21 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN700CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 240,000 Cooling capacity Cooling 1 70.0 Power input 22.6 Btu/h 199,200 Cooling capacity Cooling 2 58.4 Power input 25.1 Max. input consumption 33.0 Max. current 66.9...
  • Page 22 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN700CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YS1100-6-3 Motor capacitor Motor input Fan speed 1,090/944 Type R410A Refrigerant Volume 5.65+5.65 Control Throttle valve Wired controller KWC-22...
  • Page 23 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN880CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 300,000 Cooling capacity Cooling 1 87.0 Power input 28.0 Btu/h 251,700 Cooling capacity Cooling 2 73.8 Power input 32.0 Max. input consumption 40.5 Max. current 77.4...
  • Page 24 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN880CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YS1500-6-2 Motor capacitor Motor input Fan speed Type R410A Refrigerant Volume Control Capillary Wired controller KWC-22 Centralized controller (Optional) Ambient temperature (Cooling) °C...
  • Page 25 Rooftop KRFN Kentatsu Nominal ton (Ton) Model KRFN1050CFAN3 Power supply 380~415V, 3Ph, 50Hz Btu/h 360,000 Cooling capacity Cooling 1 105.0 Power input 34.3 Btu/h 336,300 Cooling capacity Cooling 2 98.6 Power input 41.8 Max. input consumption 49.5 Max. current 94.1...
  • Page 26 Kentatsu Rooftop KRFN Continued: Nominal ton (Ton) Model KRFN1050CFAN3 Type Axial Quantity Drive type Direct Motor quantity Outdoor fan Motor model YS1500-6-2 Motor capacitor Motor input Fan speed Type R410A Refrigerant Volume 7.6+7.6 Control Capillary Wired controller KWC-22 Centralized controller (Optional) Ambient temperature (Cooling) °C...

  • Page 27: Dimensions Drawings

    Rooftop KRFN Kentatsu 3. Dimensions drawings KRFN220CFAN3, KRFN260CFAN3: (Unit: mm) Performance...
  • Page 28 Kentatsu Rooftop KRFN Performance...
  • Page 29 Rooftop KRFN Kentatsu Performance...
  • Page 30 Kentatsu Rooftop KRFN KRFN300CFAN3, KRFN350CFAN3: (Unit: mm) Performance...
  • Page 31 Rooftop KRFN Kentatsu Performance...
  • Page 32 Kentatsu Rooftop KRFN KRFN440CFAN3, KRFN530CFAN3: (Unit: mm) Performance...
  • Page 33 Rooftop KRFN Kentatsu Performance...
  • Page 34 Kentatsu Rooftop KRFN KRFN600CFAN3, KRFN700CFAN3: (Unit: mm) Performance...
  • Page 35 Rooftop KRFN Kentatsu Performance...
  • Page 36 Kentatsu Rooftop KRFN KRFN880CFAN3, KRFN1050CFAN3: (Unit: mm) Performance...
  • Page 37 Rooftop KRFN Kentatsu Performance...

  • Page 38: Wiring Diagrams

    Kentatsu Rooftop KRFN 4. Wiring diagrams KRFN220CFAN3, KRFN260CFAN3: Performance...
  • Page 39 Rooftop KRFN Kentatsu KRFN300CFAN3: Performance...
  • Page 40 Kentatsu Rooftop KRFN KRFN350CFAN3: Performance...
  • Page 41 Rooftop KRFN Kentatsu KRFN440CFAN3: Performance...
  • Page 42 Kentatsu Rooftop KRFN KRFN530CFAN3: Performance...
  • Page 43 Rooftop KRFN Kentatsu KRFN600CFAN3: Performance...
  • Page 44 Kentatsu Rooftop KRFN KRFN700CFAN3: Performance...
  • Page 45 Rooftop KRFN Kentatsu KRFN880CFAN3, KRFN1050CFAN3: Performance...

  • Page 46: Performance Data

    Kentatsu Rooftop KRFN 5. Performance data KRFN220CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 65.4 57.1 5614.7 75.8 42.6 6170.5 79.0 26.7 7560.1 62.1 54.5 5930.5 68.0 41.2 6189.5 78.4...
  • Page 47 Rooftop KRFN Kentatsu KRFN220CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 56.6 51.8 6506.2 67.0 38.8 6690.0 76.2 24.5 8597.9 48.9 47.1 7093.2 58.5 34.0 7380.9 70.4 21.0...
  • Page 48 Kentatsu Rooftop KRFN KRFN220CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 47.1 45.3 7423.2 58.1 33.6 7416.5 68.6 19.2 9396.0 44.3 42.7 7922.3 53.2 30.7 7784.9 64.1 18.7 10013.3...
  • Page 49 Rooftop KRFN Kentatsu KRFN260CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 77.6 67.8 7012.8 89.9 50.7 7460.0 93.7 31.9 8494.4 73.7 64.7 7576.0 80.7 49.0 7882.8 92.9 30.8 8930.9 26.7...
  • Page 50 Kentatsu Rooftop KRFN KRFN260CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 67.2 61.5 7750.7 79.5 46.1 7917.1 90.4 29.3 9650.3 54.7 52.6 8307.4 66.1 37.2 8611.1 80.2 21.8...
  • Page 51 Rooftop KRFN Kentatsu KRFN260CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 53.7 51.6 8637.4 65.6 36.7 8635.8 79.2 20.8 10369.3 49.3 47.4 9132.2 59.8 33.3 8986.5 72.7 19.1 11076.9...
  • Page 52 Kentatsu Rooftop KRFN KRFN300CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 89.1 77.0 8400.4 99.8 56.7 8825.0 103.6 34.9 9516.1 82.1 73.5 8742.2 95.7 54.7 8936.5 102.7 33.7 10074.2 26.7...
  • Page 53 Rooftop KRFN Kentatsu KRFN300CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 75.0 69.9 9079.1 88.5 51.9 9313.0 100.1 32.0 10688.9 62.9 61.4 9412.1 75.7 43.3 9883.7 91.1 25.1...
  • Page 54 Kentatsu Rooftop KRFN KRFN300CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 60.8 59.3 9742.1 75.5 43.1 9903.4 89.0 23.0 11425.7 56.2 54.8 10237.3 67.8 38.4 10208.0 81.8 21.8 12043.8...
  • Page 55 Rooftop KRFN Kentatsu KRFN350CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 106.6 92.5 9374.6 119.1 68.9 10455.4 123.6 43.4 10837.3 98.5 88.4 8753.4 114.4 66.5 10317.4 122.5 42.0 10828.7 26.7...
  • Page 56 Kentatsu Rooftop KRFN KRFN350CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 90.2 84.3 10064.9 106.0 63.3 11439.1 119.5 40.0 12606.2 80.0 78.3 10694.2 95.0 57.2 12146.0 112.9 35.9...
  • Page 57 Rooftop KRFN Kentatsu KRFN350CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 77.8 76.1 10815.0 93.2 55.4 12301.3 110.7 33.7 13675.5 72.2 70.6 11720.9 85.8 51.4 13095.1 102.1 32.1 14322.6...
  • Page 58 Kentatsu Rooftop KRFN KRFN440CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 130.8 10392.2 145.8 85.5 11818.4 151.2 54.9 12325.4 121.1 10483.5 140.1 82.7 12499.8 149.9 53.3 13222.4 26.7 133.4 10700.9...
  • Page 59 Rooftop KRFN Kentatsu KRFN440CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 111.1 12036.3 130.1 78.8 13848.3 146.3 50.9 15387.9 100.6 98.5 13610.7 118.6 73.2 15331.9 140.0 47.6 17382.1...
  • Page 60 Kentatsu Rooftop KRFN KRFN440CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 97.1 95.0 13671.4 117.7 72.3 15356.4 136.5 44.1 17160.9 91.2 89.3 14915.6 107.5 66.2 16489.3 127.1 43.1 18335.4...
  • Page 61 Rooftop KRFN Kentatsu KRFN530CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 163.5 15041.6 183.2 15388.1 193.5 72.1 15888.1 153.3 15898.0 171.6 99.8 16270.9 188.7 68.9 16770.9 26.7 165.6 15321.7 185.5...
  • Page 62 Kentatsu Rooftop KRFN KRFN530CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 142.6 16610.8 163.5 94.5 17014.1 185.6 65.5 17514.1 117.6 17211.6 141.0 85.6 18401.2 160.6 49.3 18901.2 26.7...
  • Page 63 Rooftop KRFN Kentatsu KRFN530CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 114.6 98.7 17039.4 140.5 85.1 18421.9 157.6 46.3 18921.9 112.6 97.3 16867.3 135.0 81.8 18766.8 154.0 46.9 19266.8...
  • Page 64 Kentatsu Rooftop KRFN KRFN600CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 190.7 13977.6 213.3 16251.8 225.1 85.9 17368.9 179.0 15723.7 200.0 17997.9 219.6 82.2 19115.0 26.7 193.1 14237.2 215.9 16511.4...
  • Page 65 Rooftop KRFN Kentatsu KRFN600CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 166.7 17469.9 190.7 19744.0 216.0 78.3 22124.4 146.3 19500.2 173.2 21633.7 195.6 68.0 23888.2 26.7 171.1 17729.5...
  • Page 66 Kentatsu Rooftop KRFN KRFN600CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 140.5 20152.1 170.1 21847.9 189.8 62.2 24415.4 140.6 21536.1 166.3 97.2 22193.9 188.1 65.3 24616.4 26.7 146.2 20411.7...
  • Page 67 Rooftop KRFN Kentatsu KRFN700CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 216.2 20278.5 242.2 21474.3 225.9 95.5 22772.2 202.7 20646.9 227.0 21842.7 249.5 91.3 23140.6 26.7 218.8 20347.6 245.2 21613.6...
  • Page 68 Kentatsu Rooftop KRFN KRFN700CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 188.6 22346.6 216.2 22790.6 245.5 86.7 24988.5 178.9 23928.7 192.7 24372.7 218.7 71.7 26993.8 26.7 193.5 22486.0...
  • Page 69 Rooftop KRFN Kentatsu KRFN700CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 175.3 24299.7 191.8 24743.7 215.1 68.1 27360.2 152.1 24849.7 181.2 25293.7 205.8 67.0 27760.2 26.7 181.8 24439.1 194.9...
  • Page 70 Kentatsu Rooftop KRFN KRFN880CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 266.7 24732.7 297.9 25232.7 309.2 25809.0 246.4 24500.5 273.7 27210.1 306.4 28599.0 26.7 272.2 24932.6 304.1 25432.6 315.5 26013.3...
  • Page 71 Rooftop KRFN Kentatsu KRFN880CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 225.7 26487.9 265.2 29197.5 298.9 32028.6 198.2 28475.3 235.7 31184.9 280.4 87.9 36055.2 26.7 230.4 26670.0 270.7...
  • Page 72 Kentatsu Rooftop KRFN KRFN880CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 195.5 29071.5 233.0 31781.1 277.7 85.2 36798.7 175.5 30462.7 209.6 33172.3 250.3 75.3 38458.3 26.7 199.8 29253.6 238.0...
  • Page 73 Rooftop KRFN Kentatsu KRFN1050CFAN3 Cooling capacity: Gross Cooling Capacity Ambient DB(°C) 29.4 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 319.7 28343.2 357.8 31730.7 377.7 32822.2 300.0 28735.9 345.7 33314.0 368.5 34967.1 26.7 323.6 28952.0 362.1 31948.1 384.9 33274.4...
  • Page 74 Kentatsu Rooftop KRFN KRFN1050CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 40.6 46.1 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 279.3 35380.5 319.7 39383.2 362.5 44851.9 271.5 34444.3 326.8 40609.3 344.7 43641.9 26.7 286.5 36267.6 324.6 40257.9...
  • Page 75 Rooftop KRFN Kentatsu KRFN1050CFAN3 Cooling capacity: (Continued) Gross Cooling Capacity Ambient DB(°C) 51.7 Indoor WB(°C) 16.1 19.4 22.8 16.1 19.4 22.8 DB(°C) 23.9 269.5 35335.6 324.8 41708.3 342.7 44844.6 245.9 38351.3 289.2 44188.2 325.9 50727.1 26.7 279.0 37172.1 329.4 42630.0 347.5...

  • Page 76: Electrical Data

    Kentatsu Rooftop KRFN 6. Electrical data Power Supply Compressor Eva.Fan Motor Con. Fan Motor Model TOCA Qty. (Each) (Each) KRFN220CFAN3 23.5 28.9 33.2 5.65 7.22 1.62 3.65 0.83 KRFN260CFAN3 29.4 36.5 43.7 121.2 14.3 8.08 7.18 1.61 3.93 0.88 29.6 36.3...

  • Page 77: Fan Performance Data

    Rooftop KRFN Kentatsu 7. Fan performance data KRFN220CFAN3 Static Pressure Item High speed Medium speed Low speed 1,001 Fan speed (rpm) Power input (W) 1,665 1,386 1,164 Air flow (CFM) 3,001 2,647 2,356 1,063 Fan speed (rpm) 50Pa Power input (W)
  • Page 78 Kentatsu Rooftop KRFN KRFN260CFAN3 Static Pressure Item High speed Medium speed Low speed 1,035 Fan speed (rpm) Power input (W) 1,716 1,432 1,197 Air flow (CFM) 3,074 2,697 2,403 1,081 Fan speed (rpm) 50Pa Power input (W) 1,652 1,409 1,160...
  • Page 79 Rooftop KRFN Kentatsu Blower drive options Motor Blower Fan speed Model Pulley pitch Dia. Pulley pitch Dia. range (rpm) (inch) (inch) Min. Max. 1,400 4.53~5.25 8.35 KRFN300CFAN3 1,400 4.53~5.25 1,016 7.48 KRFN350CFAN3 1,420 4.53~5.25 8.82 KRFN440CFAN3 1,440 4.53~5.25 1,112 7.48...
  • Page 80 Kentatsu Rooftop KRFN Similarly, use this RPM value to read the No. of turns (N) by referring to the table of ‘Motor Variable Pitch Pulley Data’. The variable pitch pulley for motor shall be adjusted to this ‘N’ in order to get 3483cfm. First, adjust the motor pulley to 0 turns. Then, make 0.25 turns on the pulley.
  • Page 81 Rooftop KRFN Kentatsu KRFN300CFAN3 0.25 0.75 1.25 1.75 (Pa) Fan speed (rpm) 1,790 1,720 1,710 1,665 1,620 1,560 1,500 1,445 1,390 Power input (W) Air flow (CFM) 4,320 4,213 4,166 4,130 4,094 4,041 3,988 3,946 3,905 Fan speed (rpm) 1,710...
  • Page 82 Kentatsu Rooftop KRFN KRFN350CFAN3 0.25 0.75 1.25 1.75 (Pa) Fan speed (rpm) 2,020 1,945 1,870 Power input (W) 4,571 4,500 4,428 Air flow (CFM) Fan speed (rpm) Power input (W) 2,010 1,930 1,855 1,780 Air flow (CFM) 4,442 4,398 4,323...
  • Page 83 Rooftop KRFN Kentatsu KRFN440CFAN3 0.25 0.75 1.25 1.75 2.25 (Pa) Fan speed (rpm) Power input (W) 3,530 3,445 3,360 3,225 3,090 3,000 2,910 2,810 2,710 2,620 2,530 6,773 6,718 6,662 6,575 6,487 6,395 6,302 6,230 6,158 6,103 6,049 Air flow (CFM)
  • Page 84 Kentatsu Rooftop KRFN Continued: KRFN440CFAN3 0.25 0.75 1.25 1.75 2.25 (Pa) Fan speed (rpm) Power input (W) 2,470 2,370 2,270 2,170 2,070 1,960 1,850 1,775 1,700 4,917 4,786 4,654 4,571 4,488 4,335 4,182 4,040 3,898 Air flow (CFM) Fan speed (rpm)
  • Page 85 Rooftop KRFN Kentatsu KRFN530CFAN3 0.25 0.75 1.25 1.75 (Pa) Fan speed (rpm) 1,008 Power input (W) 5,146 4,968 4,790 4,575 4,360 4,155 3,950 7,928 7,867 7,805 7,686 7,566 7,452 7,338 Air flow (CFM) Fan speed (rpm) 1,014 1,003 Power input (W)
  • Page 86 Kentatsu Rooftop KRFN Continued: KRFN530CFAN3 0.25 0.75 1.25 1.75 (Pa) Fan speed (rpm) 1,082 1,074 1,067 1,059 1,051 1,044 1,036 1,028 1,020 Power input (W) 3,990 3,865 3,740 3,610 3,480 3,340 3,200 3,085 2,970 6,418 6,354 6,291 6,159 6,027 5,911...
  • Page 87 Rooftop KRFN Kentatsu KRFN600CFAN3 0.25 0.75 1.25 1.75 2.25 (Pa) Fan speed (rpm) Power input (W) 4,751 4,857 4,962 4,643 4,323 4,216 4,109 3,960 3,811 9,837 9,896 9,955 9,722 9,489 9,498 9,507 9,346 9,185 Air flow (CFM) Fan speed (rpm)
  • Page 88 Kentatsu Rooftop KRFN Continued: KRFN600CFAN3 0.25 0.75 1.25 1.75 2.25 (Pa) Fan speed (rpm) 1,021 1,012 1,004 Power input (W) 3,332 3,281 3,229 3,328 3,427 3,143 2,859 2,707 2,555 2,443 2,330 7,454 7,272 7,090 7,215 7,339 7,044 6,748 6,561 6,374...
  • Page 89 Rooftop KRFN Kentatsu KRFN700CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,194 1,181 1,168 1,154 1,140 1,127 1,113 1,098 1,081 Power input (W) 6,951 6,710 6,468 6,266 6,063 5,831 5,599 5,422 5,188 11,210 11,104 10,997 10,872 10,746...
  • Page 90 Kentatsu Rooftop KRFN Continued: KRFN700CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,261 1,244 1,232 1,218 1,204 1,190 1,177 1,163 1,149 1,135 1,121 1,106 1,093 Power input (W) 6,511 6,332 6,169 5,929 5,607 5,391 5,175 4,953 4,731...
  • Page 91 Rooftop KRFN Kentatsu Continued: KRFN700CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,276 1,262 1,248 1,235 1,223 Power input (W) 4,546 4,243 3,842 3,731 3,169 7,459 6,935 6,339 6,285 5,318 Air flow (CFM) Fan speed (rpm) 1,280...
  • Page 92 Kentatsu Rooftop KRFN KRFN880CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,075 1,059 1,044 1,034 1,026 1,009 1,002 Power input (W) 6,962 6,840 6,589 6,382 6,068 5,930 5,651 5,544 5,232 5,085 4,765 4,893 4,734 12,304 12,345 12,115...
  • Page 93 Rooftop KRFN Kentatsu Continued: KRFN880CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,077 1,064 1,047 1,038 1,032 1,015 1,006 Power input (W) 5,613 5,449 4,984 4,995 4,746 4,455 4,382 4,203 3,862 3,683 3,548 3,645 3,512 10,300 10,229...
  • Page 94 Kentatsu Rooftop KRFN Continued: KRFN880CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,085 1,073 1,061 1,050 1,038 1,025 1,011 Power input (W) 3,975 3,744 3,513 3,282 3,051 2,940 3,024 7,219 6,776 6,332 5,889 5,445 5,375 5,815 Air flow (CFM)
  • Page 95 Rooftop KRFN Kentatsu KRFN1050CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,106 1,090 1,074 1,053 1,032 1,027 1,022 Power input (W) 8,203 7,899 7,595 7,256 6,917 6,894 6,872 13,393 13,210 13,026 12,794 12,563 12,499 12,434 Air flow (CFM)
  • Page 96 Kentatsu Rooftop KRFN Continued: KRFN1050CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,172 1,166 1,158 1,152 1,144 1,144 1,114 1,100 1,087 1,064 1,041 1,036 1,032 Power input (W) 9,364 8,711 8,385 7,748 7,426 7,426 6,467 6,083 5,699...
  • Page 97 Rooftop KRFN Kentatsu Continued: KRFN1050CFAN3 0.25 0.75 1.25 1.75 2.25 2.75 (Pa) Fan speed (rpm) 1,188 1,182 1,171 1,164 1,154 1,139 1,125 Power input (W) 7,328 6,237 6,046 5,347 5,185 4,755 4,324 10,187 8,913 9,238 8,209 8,250 7,756 7,262 Air flow (CFM)

  • Page 98: Refrigerant Cycle Diagram

    Kentatsu Rooftop KRFN 8. Refrigerant cycle diagram KRFN220CFAN3, KRFN260CFAN3, KRFN300CFAN3, KRFN350CFAN3, KRFN440CFAN3, KRFN530CFAN3, KRFN600CFAN3, KRFN700CFAN3, KRFN880CFAN3, KRFN1050CFAN3:   Performance...

  • Page 99: Operation Limits

    Rooftop KRFN Kentatsu 9. Operation limits     Outdoor temperature Indoor temperature Cooling only mode 10°C~52°C 17°C~31°C Room relative humidity should be less than 80%. If the unit operates in excess, the surface of the unit may attract condensation.  Performance...
  • Page 100 Kentatsu Rooftop KRFN Part. 3 Installations General information ............... 101     Recommendations ..............102     Lifting ..................103     Installation ................104     Condensate drainage ............. 105     Duct work ................106     Electrical wiring ..............107  ...

  • Page 101: General Information

    Rooftop KRFN Kentatsu 1. General information Warning and cautions appear at appropriate locations throughout this manual. Read these carefully, please. Caution:  Read this entire manual before beginning installation procedures.  Body injury can result from high voltage electrical components, fast moving fans. For protection from these inherent hazards during installation and servicing, the electrical supply must be disconnected.

  • Page 102: Recommendations

    Kentatsu Rooftop KRFN 2. Recommendations 2.1 Horizontal airflow application  These units are designed and certified for outdoor installation. These units may be installed directly on wood flooring or on Class A, Class B and Class C roof covering material.

  • Page 103: Lifting

    Rooftop KRFN Kentatsu  Any reduction of the unit clearances indicated in these pictures may result in condenser coil starvation or the recirculation of warm condenser air. Actual clearances which appear to be inadequate should be reviewed. 3. Lifting ...

  • Page 104: Installation

    Kentatsu Rooftop KRFN 4. Installation 4.1 For roof top applications using a field fabricated frame and ducts:  The frame must be located and secured by bolting or welding to the roof. Flashing is required.  The hole in the roof must be prepared in advance of installing the unit.

  • Page 105: Condensate Drainage

    There must be a weatherproof seal where the duct enters the structure.  Complete the installation. 5. Condensate drainage Model X value (mm) Model X value (mm) KRFN220CFAN3 20 ≤ X ≤ 40 KRFN260CFAN3 20 ≤ X ≤ 40 KRFN300CFAN3 20 ≤ X ≤ 40 KRFN350CFAN3 20 ≤ X ≤ 40 KRFN440CFAN3 20 ≤...

  • Page 106: Duct Work

    Kentatsu Rooftop KRFN 6. Duct work  All conditioned air ductwork should be insulated to minimize heating and cooling duct losses. Use a minimum of 2 inches of insulation with a vapor barrier. The outside ductwork must be weatherproofed between the unit and the building.

  • Page 107: Electrical Wiring

    24V power source is applied to the control circuit. Wiring length between wired controller and unit (One way) Min. wire size (mm 0.75 0.75 Main power supply parameters:  Model Main power Main power switch Fuse KRFN220CFAN3 380~415V, 3Ph~, KRFN260CFAN3 50Hz KRFN300CFAN3 Installation...
  • Page 108 100A KRFN1050CFAN3 Model Wires for power supply Type of wires 3 × UL1015 9AWG 3×6mm² + 2×3mm² KRFN220CFAN3 2 × UL1015 12AWG 3 × UL1015 7AWG 3×10mm² + 2×6mm² KRFN260CFAN3 2 × UL1015 9AWG 3 × UL1015 7AWG 3×10mm² + 2×6mm²...
  • Page 109 Rooftop KRFN Kentatsu  Power supply wiring diagram KRFN220CFAN3, KRFN260CFAN3, KRFN300CFAN3, KRFN350CFAN3, KRFN440CFAN3, KRFN530CFAN3, KRFN600CFAN3, KRFN700CFAN3, KRFN880CFAN3, KRFN1050CFAN3:  Wired controller wiring diagram (Standard wired controller) KRFN220CFAN3, KRFN260CFAN3, KRFN300CFAN3, KRFN350CFAN3, KRFN440CFAN3, KRFN530CFAN3, KRFN600CFAN3, KRFN700CFAN3, KRFN880CFAN3, KRFN1050CFAN3: The standard wired controller model of these units is KWC-22. When KWC-22 is connected, the switch SW3 should be set to ON.
  • Page 110 Kentatsu Rooftop KRFN KRFN220CFAN3, KRFN260CFAN3: The standard wired controller model of these units is KFC-14.   Installation...

  • Page 111: Start-Up

    Rooftop KRFN Kentatsu 8. Start-up Before starting unit:  Is the unit properly located and level with the proper clearance?  Is the duct work correctly sized, run, taped, insulated, and weatherproofed with proper unit arrangement?  Is the wiring properly sized and run according to the unit wiring diagram? Are all the wiring connections tight, including those in the unit? ...

  • Page 112: Safety Control

    Kentatsu Rooftop KRFN 9. Safety control Functions  Minutes delay for the compressor start-up: At the beginning of energizing, 3-minutes delay should be taken to start the compressor. While after the stop of the compressor, 7-minutes delay should be taken to restart the compressor.
  • Page 113 Rooftop KRFN Kentatsu Error & protection code KRFN300CFAN3, KRFN350CFAN3, KRFN440CFAN3, KRFN530CFAN3, KRFN600CFAN3, KRFN700CFAN3, KRFN880CFAN3, KRFN1050CFAN3 : Type Content Code Remarks Normal Standby ------ Normal Constraint cool Normal Error Compressor phase sequence error or phase lack Condenser pipe temperature sensor (T3) in system A...
  • Page 114 Anti-freezing protection of evaporator in system B Protection Protection of outdoor ambient temperature Notes: If same protection which includes all system for 2-stage products is triggered 3 times within 1 hour, the unit should be power-off to recovery.  KRFN220CFAN3, KRFN260CFAN3: LED1 LED2 LED3 Content (Red)
  • Page 115 Rooftop KRFN Kentatsu Continued: LED1 LED2 LED3 Content (Red) (Yellow) (Green) Low temperature protection of evaporator FLASH High temperature protection of condenser FLASH Wired controller communication error FLASH FLASH Low pressure protection FLASH FLASH Phase sequence error or phase default:...
  • Page 116 Kentatsu Rooftop KRFN Evaporator pipe temperature sensor (T2) error: Condenser pipe temperature sensor (T3) error : Ambient temperature sensor (T4) error: Indoor side room temperature sensor (T1) error : Over-current protection of compressor: Installation...
  • Page 117 Rooftop KRFN Kentatsu High pressure protection: High discharge temperature protection : Wired controller communication error : Installation...
  • Page 118 Kentatsu Rooftop KRFN Low pressure protection : Eeprom error : Installation...
  • Page 119 Rooftop KRFN Kentatsu Over-current protection of indoor side fan motor : Comprehensive protection of outdoor side fan motor : Installation...
  • Page 120 Kentatsu Rooftop KRFN High temperature protection of condenser : Low temperature protection of evaporator: Anti-freezing protection of evaporator : Installation...
  • Page 121 Rooftop KRFN Kentatsu Protection of outdoor ambient temperature : Installation...

  • Page 122: Maintenance

    Kentatsu Rooftop KRFN 10. Maintenance Caution  Do not operate the unit without the evaporator fan access panel in place. Reinstall the access panel after performing any maintenance. Operating the unit without the access panel may result in severe personal injury.
  • Page 123 Rooftop KRFN Kentatsu Notes: L=A/64 Model A (mm) KRFN300CFAN3  KRFN350CFAN3  KRFN440CFAN3  KRFN530CFAN3  KRFN600CFAN3  KRFN700CFAN3  KRFN880CFAN3  KRFN1050CFAN3   Measure the belt deflection force, the force should be between the values shown in the following lists.  The belt which is too tight or too loose may generate noise and be harmful to the unit.
  • Page 124 Kentatsu Rooftop KRFN  Pull out the filter along the supporting slot. Step 2: Clean the air filter.  Vacuum cleaner or fresh water may be used to clean the air filter. If the dust accumulated too much, please use soft brush and mild detergent to clean.
  • Page 125 Rooftop KRFN Kentatsu  Motors and drive system components;  Economizer gaskets (Reserved);  Safety controls; Electrical components and wiring (For possible replacement and connection tightness);   Condenser drainage (For cleaning);  Unit duct connections (To check that they are physically sound and sealed to the unit casing);...

  • Page 126: Appendix: - Temperature Sensor

    Kentatsu Rooftop KRFN Appendix: - Temperature sensor Room / Pipe temperature sensor Resistance Valve (R25 = 10 kOhm±1%, B25/50 = 4100K±1%) Temperature Temperature Tolerance Max. Min. (°C) (KΩ) (KΩ) (KΩ) (°C) 35.630 34.840 34.064 -0.41 0.42 33.741 33.011 32.292 -0.40 0.42...
  • Page 127 Rooftop KRFN Kentatsu Continued: Temperature Temperature Tolerance Max. Min. (°C) (KΩ) (KΩ) (KΩ) (°C) 10.582 10.472 10.363 -0.22 0.23 10.100 10.000 9.9000 -0.21 0.22 9.6518 9.5519 9.4520 -0.22 0.23 9.2262 9.1265 9.0270 -0.23 0.25 8.8218 8.7226 8.6235 -0.25 0.26 8.4376 8.3389...
  • Page 128 Kentatsu Rooftop KRFN Continued: Temperature Temperature Tolerance Max. Min. (°C) (KΩ) (KΩ) (KΩ) (°C) 3.6632 3.5900 3.5179 -0.50 0.52 3.5230 3.4512 3.3805 -0.52 0.53 3.3890 3.3186 3.2494 -0.53 0.55 3.2608 3.1919 3.1241 -0.54 0.56 3.1383 3.0708 3.0044 -0.56 0.57 3.0211 2.9550...

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