Kentatsu KRFN1050CFAN3 Service Manual Download Page 123

Page: 123 / 128

Rooftop KRFN

Kentatsu

Installation

123

Notes: L=A/64

Model

A (mm)

KRFN300CFAN3

380

KRFN350CFAN3

380

KRFN440CFAN3

560

KRFN530CFAN3

560

KRFN600CFAN3

580

KRFN700CFAN3

580

KRFN880CFAN3

480

KRFN1050CFAN3

480



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.

Belt section

For required to deflection

Small pulley diameter

Newton

Kilogram-force

SPA

80mm~132mm

25N~35N

2.5kg.f~3.6kg.f

Air intake filter clean (The filter should be customized).

Step 1:

Dismantle the air filter.



Twist of screws and get out the plate.

Summary of Contents for KRFN1050CFAN3

Page 1: ...Kentatsu Denki Co Ltd 2016 Servicemanual Rooftop KRFN220CFAN3 KRFN260CFAN3 KRFN300CFAN3 KRFN350CFAN3 KRFN530CFAN3 KRFN600CFAN3 KRFN700CFAN3 KRFN880CFAN3 KRFN1050CFAN3 DK16 01 01 34 KRFN440CFAN3...

Page 2: ...formation Content Part 1 General information 3 Part 2 Performances 6 Part 3 Installations 100 Kentatsu reserves the right to discontinue or change specification or designs at any time without notices...

Page 3: ...Rooftop KRFN Kentatsu General Information 3 Part 1 General information 1 Product lineup 4 2 Nomenclature 5...

Page 4: ...AN3 Cooling only Side discharge 10 KRFN350CFAN3 Cooling only Side discharge 12 5 KRFN440CFAN3 Cooling only Side discharge 15 KRFN530CFAN3 Cooling only Side discharge 17 5 KRFN600CFAN3 Cooling only Sid...

Page 5: ...Rooftop KRFN Kentatsu General Information 5 2 Nomenclatures K R F N 220 C F A N3 N1 220 240 50 1 N3 380 50 3 A R410A D R22 F on off Z C H 10 F G H K 100 L 50 T 100 V Y Z 600 600 U R KENTATSU...

Page 6: ...ormance 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 8 Refrigerant cycle diagr...

Page 7: ...cidic substances It should be customized Reliable scroll compressor Famous brand compressor it is more reliable No complex internal suction and discharge valves for quieter operation and higher reliab...

Page 8: ...ast checking system pressure without removing the panel System self diagnostic function Press the Check button in Main PCB board and the LED display of PCB board in unit will display the normal checki...

Page 9: ...ophilic aluminum fin Hydrophilic aluminum fin Tube diameter mm 7 7 Tube type Inner grooved copper pipe Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 1 Centrifugal 1 Drive type Direct...

Page 10: ...bient temperature Cooling C 10 52 10 52 System stage 1 1 Dimensions Net W H D mm 1 475 840 1 130 1 475 840 1 130 Packing W H D mm 1 495 870 1 150 1 495 870 1 150 Weight Net kg 223 231 Gross kg 228 236...

Page 11: ...mber of rows 4 Fin spacing mm 1 5 Fin type Hydrophilic aluminum fin Tube diameter mm 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 1 Drive type Belt Motor quantity 1 Motor...

Page 12: ...10 52 System stage 2 Dimensions Net W H D mm 1 483 1 231 1 138 Packing W H D mm 1 500 1 255 1 155 Weight Net kg 331 Gross kg 342 Notes 1 Nominal ton only for reference Cooling capacity as per specifi...

Page 13: ...umber of rows 4 Fin spacing mm 1 5 Fin type Hydrophilic aluminum fin Tube diameter mm 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 1 Drive type Belt Motor quantity 1 Moto...

Page 14: ...stem stage 2 Dimensions Net W H D mm 1 483 1 231 1 138 Packing W H D mm 1 500 1 255 1 155 Weight Net kg 335 Gross kg 346 Notes 1 Nominal ton only for reference Cooling capacity as per specifications 2...

Page 15: ...f rows 4 4 Fin spacing mm 1 3 1 3 Fin type Hydrophilic aluminum fin Tube diameter mm 7 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 1 Drive type Belt Motor quantity 1 Mot...

Page 16: ...10 52 System stage 2 Dimensions Net W H D mm 1 965 1 230 1 130 Packing W H D mm 1 995 1 255 1 160 Weight Net kg 433 Gross kg 453 Notes 1 Nominal ton only for reference Cooling capacity as per specific...

Page 17: ...ows 4 4 Fin spacing mm 1 3 1 3 Fin type Hydrophilic aluminum fin Tube diameter mm 7 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 1 Drive type Belt Motor quantity 1 Motor...

Page 18: ...tem stage 2 Dimensions Net W H D mm 1 965 1 230 1 130 Packing W H D mm 1 995 1 255 1 160 Weight Net kg 470 Gross kg 490 Notes 1 Nominal ton only for reference Cooling capacity as per specifications 2...

Page 19: ...rows 3 Fin spacing mm 1 3 Fin type Hydrophilic aluminum fin Tube diameter mm 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 2 Drive type Belt Motor quantity 1 Motor model...

Page 20: ...10 52 System stage 2 Dimensions Net W H D mm 1 670 1 247 2 192 Packing W H D mm 1 695 1 284 2 212 Weight Net kg 590 Gross kg 620 Notes 1 Nominal ton only for reference Cooling capacity as per specific...

Page 21: ...ows 4 Fin spacing mm 1 3 Fin type Hydrophilic aluminum fin Tube diameter mm 7 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 2 Drive type Belt Motor quantity 1 Motor model YE...

Page 22: ...ystem stage 2 Dimensions Net W H D mm 1 670 1 247 2 192 Packing W H D mm 1 695 1 284 2 212 Weight Net kg 670 Gross kg 700 Notes 1 Nominal ton only for reference Cooling capacity as per specifications...

Page 23: ...s 4 Fin spacing mm 1 6 Fin type Hydrophilic aluminum fin Tube diameter mm 8 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 2 Drive type Belt Motor quantity 1 Motor model YE2...

Page 24: ...ge 2 Dimensions Net W H D mm 2 320 1 245 2 220 Packing W H D mm 2 330 1 275 2 230 Weight Net kg 895 Gross kg 925 Notes 1 Nominal ton only for reference Cooling capacity as per specifications 2 Cooling...

Page 25: ...ws 4 Fin spacing mm 1 6 Fin type Hydrophilic aluminum fin Tube diameter mm 8 Tube type Inner grooved copper pipe Indoor fan Type Quantity Centrifugal 2 Drive type Belt Motor quantity 1 Motor model YE2...

Page 26: ...stage 2 Dimensions Net W H D mm 2 320 1 245 2 220 Packing W H D mm 2 330 1 275 2 230 Weight Net kg 910 Gross kg 940 Notes 1 Nominal ton only for reference Cooling capacity as per specifications 2 Cool...

Page 27: ...Rooftop KRFN Kentatsu Performance 27 3 Dimensions drawings KRFN220CFAN3 KRFN260CFAN3 Unit mm...

Page 28: ...Kentatsu Rooftop KRFN 28 Performance...

Page 29: ...Rooftop KRFN Kentatsu Performance 29...

Page 30: ...Kentatsu Rooftop KRFN 30 Performance KRFN300CFAN3 KRFN350CFAN3 Unit mm...

Page 31: ...Rooftop KRFN Kentatsu Performance 31...

Page 32: ...Kentatsu Rooftop KRFN 32 Performance KRFN440CFAN3 KRFN530CFAN3 Unit mm...

Page 33: ...Rooftop KRFN Kentatsu Performance 33...

Page 34: ...Kentatsu Rooftop KRFN 34 Performance KRFN600CFAN3 KRFN700CFAN3 Unit mm...

Page 35: ...Rooftop KRFN Kentatsu Performance 35...

Page 36: ...Kentatsu Rooftop KRFN 36 Performance KRFN880CFAN3 KRFN1050CFAN3 Unit mm...

Page 37: ...Rooftop KRFN Kentatsu Performance 37...

Page 38: ...Kentatsu Rooftop KRFN 38 Performance 4 Wiring diagrams KRFN220CFAN3 KRFN260CFAN3...

Page 39: ...Rooftop KRFN Kentatsu Performance 39 KRFN300CFAN3...

Page 40: ...Kentatsu Rooftop KRFN 40 Performance KRFN350CFAN3...

Page 41: ...Rooftop KRFN Kentatsu Performance 41 KRFN440CFAN3...

Page 42: ...Kentatsu Rooftop KRFN 42 Performance KRFN530CFAN3...

Page 43: ...Rooftop KRFN Kentatsu Performance 43 KRFN600CFAN3...

Page 44: ...Kentatsu Rooftop KRFN 44 Performance KRFN700CFAN3...

Page 45: ...Rooftop KRFN Kentatsu Performance 45 KRFN880CFAN3 KRFN1050CFAN3...

Page 46: ...26 2 8000 4 26 7 70 9 66 9 6048 0 78 4 57 0 6411 8 81 2 38 5 7796 3 65 5 62 1 6564 2 75 0 56 1 6600 3 80 5 38 9 8250 4 29 4 72 4 70 2 6313 0 80 0 67 9 6855 4 82 9 48 3 8146 3 66 9 64 3 7007 2 77 3 68...

Page 47: ...5 8551 5 26 7 59 8 56 9 6879 8 70 1 51 6 7048 5 77 8 38 2 8871 9 51 6 48 0 7451 7 61 4 49 4 7764 4 67 8 34 6 8839 5 29 4 61 1 60 2 7257 4 71 6 67 5 7438 1 79 4 51 1 9473 6 52 7 50 8 7681 7 62 7 59 9 8...

Page 48: ...748 1 26 7 49 8 46 2 7781 7 60 5 48 9 7800 0 66 0 32 8 9444 7 46 8 43 5 8299 8 55 8 44 9 8181 3 61 7 31 2 10142 1 29 4 50 9 49 0 8131 7 62 3 59 5 8192 5 67 5 45 5 10046 4 47 8 46 1 8643 7 57 0 54 4 86...

Page 49: ...7 26 7 84 2 79 5 7395 2 93 0 67 8 7689 4 96 4 45 9 8724 2 77 8 73 8 7874 8 89 0 66 6 7900 2 95 5 46 4 9205 8 29 4 86 1 83 5 7660 3 95 1 80 7 8105 3 98 5 57 6 9074 3 79 6 76 5 8139 9 91 9 81 8 8300 7 9...

Page 50: ...9484 2 26 7 71 1 67 6 8099 5 83 2 61 4 8256 2 92 3 45 6 9925 4 58 0 53 8 8646 5 69 6 55 5 8975 2 77 2 37 9 9774 4 29 4 72 7 71 6 8450 3 85 1 80 3 8617 0 94 3 60 9 10496 1 59 5 57 2 8876 6 71 3 67 9 93...

Page 51: ...59 4 26 7 57 0 52 8 8976 5 69 6 54 7 8999 9 76 2 36 9 10472 2 52 4 48 5 9491 3 63 0 50 1 9365 7 70 0 33 9 11254 5 29 4 58 5 56 2 9326 6 70 6 67 2 9363 6 78 1 52 1 11042 8 53 7 51 6 9836 5 64 5 61 4 97...

Page 52: ...93 6 84 4 8648 4 103 0 74 9 9040 6 106 3 50 5 9729 7 86 7 80 8 9028 5 102 0 75 4 9189 0 105 2 51 3 10331 0 29 4 95 7 86 3 8910 1 105 3 90 9 9288 0 108 6 63 8 10079 8 88 7 82 7 9293 6 104 3 91 9 9527...

Page 53: ...7 26 7 79 6 77 3 9425 5 92 8 73 0 9650 9 103 0 50 3 10996 0 67 0 64 3 9760 0 80 7 64 6 10280 3 94 0 43 9 11194 8 29 4 81 5 79 1 9616 3 94 9 91 7 9841 6 105 3 67 3 11403 7 68 6 66 0 9986 7 81 2 79 4 1...

Page 54: ...26 7 64 9 62 2 10090 0 80 5 64 4 10300 0 91 9 41 8 11806 2 59 9 57 5 10596 8 72 9 57 7 10632 9 84 5 39 0 12470 9 29 4 66 5 63 9 10436 7 81 0 79 2 11111 2 94 1 59 3 12217 2 61 4 59 0 10930 0 73 3 71 1...

Page 55: ...7 112 0 97 6 9945 0 124 8 90 9 11049 5 129 4 63 8 11446 4 103 8 93 5 9332 4 120 0 88 7 10710 2 128 2 64 3 11437 8 29 4 114 4 99 7 10302 2 127 4 107 11423 9 132 1 78 6 11829 4 106 0 95 4 9758 6 122 5 1...

Page 56: ...26 7 95 3 89 3 10635 3 111 4 85 3 12024 5 125 2 62 1 13215 2 84 9 83 2 11264 6 100 2 80 1 12584 7 118 5 58 2 14163 7 29 4 97 3 91 2 10975 2 113 8 105 12398 9 127 8 80 0 13606 9 86 8 85 0 11759 8 102 4...

Page 57: ...7 82 7 81 0 11385 4 98 4 78 3 12705 0 116 3 56 0 14284 5 76 9 75 3 12291 4 90 8 72 5 13490 7 107 4 52 6 14923 0 29 4 84 6 82 8 11881 4 100 6 97 3 13261 9 118 8 74 9 14832 3 78 6 77 0 12778 0 92 8 89...

Page 58: ...7 137 0 124 11041 3 150 2 111 12289 6 154 8 76 7 12720 8 127 3 119 11144 0 150 0 111 13300 0 153 2 77 7 13595 1 29 4 139 9 127 11492 0 153 3 133 12762 9 158 0 95 2 13205 5 130 0 122 11798 9 152 0 135...

Page 59: ...484 3 26 7 117 5 114 12730 7 135 9 108 14478 3 150 2 76 4 15828 7 106 2 103 14259 7 125 4 103 16075 4 144 0 73 9 17834 3 29 4 120 0 117 13181 4 138 8 134 14963 0 153 3 100 16336 1 108 5 105 14699 0 12...

Page 60: ...1 26 7 102 7 99 0 14320 5 124 4 102 16100 0 140 5 70 4 17613 0 96 2 92 9 15519 3 114 5 93 2 17244 2 130 7 67 0 18776 1 29 4 105 0 101 14797 8 125 1 123 16418 4 143 6 94 8 18169 7 98 4 94 9 16028 5 114...

Page 61: ...7 171 6 166 15471 7 190 0 133 15818 2 198 5 99 0 16318 2 162 0 157 16298 1 180 0 129 16701 0 192 2 96 3 17201 0 29 4 179 1 174 16152 1 191 2 157 16448 6 202 3 120 16948 6 171 8 167 16828 5 182 8 154...

Page 62: ...51 2 26 7 151 3 145 16990 9 168 5 124 17294 2 189 4 92 3 17794 2 128 8 123 17846 7 146 0 107 18681 3 168 1 77 1 19181 3 29 4 163 7 157 17221 3 173 5 150 17787 0 190 8 116 18287 0 141 2 135 18332 1 148...

Page 63: ...16 8 26 7 125 8 120 17929 5 145 4 107 18702 0 165 1 74 1 19202 0 123 3 119 18012 4 139 9 103 19046 9 161 2 73 6 19546 9 29 4 138 2 132 18670 0 147 8 132 19569 8 166 4 97 6 20069 8 135 2 131 19007 8 14...

Page 64: ...7 198 2 187 15130 7 221 0 155 17404 9 234 5 119 18472 0 188 4 180 16826 8 208 0 149 19101 0 227 4 115 20168 1 29 4 206 7 199 16889 7 223 5 180 19163 9 237 5 143 20031 0 197 0 191 18385 9 210 9 176 20...

Page 65: ...78 7 26 7 176 2 169 18523 0 198 8 144 20797 1 222 7 111 23172 5 157 1 152 20503 3 181 1 132 22636 8 203 7 100 24841 3 29 4 184 8 178 19932 0 203 0 170 22156 2 224 2 137 24408 6 171 3 166 21784 4 182 6...

Page 66: ...9 26 7 151 3 147 21105 2 178 0 129 22800 0 197 9 94 4 25443 2 151 2 147 22563 8 174 2 127 23221 6 195 9 96 4 25644 1 29 4 165 5 161 22336 3 179 5 156 24032 1 200 9 121 26624 2 164 8 160 23744 9 175 7...

Page 67: ...7 226 8 219 20638 7 251 2 175 22163 4 262 4 131 22940 7 214 1 206 21077 4 240 0 171 22602 0 254 1 127 23379 4 29 4 236 5 229 20919 0 252 6 208 22235 5 267 3 158 23157 3 227 0 218 21357 7 241 4 203 22...

Page 68: ...7 1 26 7 200 0 194 22777 1 222 7 164 23549 9 250 4 122 25227 2 193 5 188 24359 2 199 2 148 25132 0 228 5 108 27232 6 29 4 216 2 210 23057 4 229 2 198 23622 1 252 0 153 25443 8 209 7 204 24639 5 202 5...

Page 69: ...3 4 26 7 189 9 184 24730 2 198 0 147 25503 1 224 9 105 27598 9 165 9 161 25280 2 187 4 139 26053 0 215 0 102 27998 9 29 4 206 1 200 25010 5 201 2 180 25575 2 226 5 136 27815 5 181 2 176 25560 5 190 4...

Page 70: ...1 3 263 25422 5 320 0 311 25922 5 329 8 256 26527 1 270 4 253 25116 6 301 5 300 27899 9 326 6 252 29326 2 10 000 23 9 280 7 262 25312 7 303 7 187 25812 7 310 9 112 26429 0 261 7 253 25000 5 293 9 183...

Page 71: ...2 2 248 9 242 27104 0 288 9 284 29887 3 320 0 249 32770 3 219 0 211 29091 4 256 2 251 31874 7 301 0 235 36806 3 10 000 23 9 238 9 223 26987 9 275 9 175 29787 5 302 4 104 32648 6 213 2 208 28975 3 246...

Page 72: ...2 216 3 208 29687 6 253 5 248 32470 9 298 3 233 37546 4 194 5 187 31078 8 228 3 224 33862 1 269 1 209 39202 1 10 000 23 9 210 5 205 29571 5 243 7 157 32371 1 281 7 89 0 37418 7 189 2 184 30962 7 219...

Page 73: ...368 3 356 32030 7 375 4 356 32648 2 398 8 276 34683 2 354 1 348 33737 9 369 3 344 35186 1 387 2 279 36891 6 13 500 23 9 331 9 290 28743 2 372 7 223 32330 7 386 8 153 33622 2 314 3 279 29135 9 371 6 26...

Page 74: ...32 2 334 0 325 41149 2 343 5 338 42319 7 376 8 276 46422 3 340 6 322 42338 9 345 7 324 42972 8 363 8 278 45222 8 13 500 23 9 293 6 269 35780 5 338 7 206 39983 2 372 1 140 45651 9 285 9 261 34844 3 34...

Page 75: ...32 2 338 6 320 43485 2 343 7 322 44140 2 361 8 276 46464 7 312 2 307 47647 4 307 6 293 46945 3 344 1 262 52515 9 13 500 23 9 283 9 259 35735 6 343 7 252 42308 3 359 3 140 45644 6 259 6 246 38751 3 307...

Page 76: ...KRFN440CFAN3 41 5 52 9 66 4 64 139 8 3 16 6 4 75 9 16 2 4 84 2 03 1 3 66 0 83 1 KRFN530CFAN3 45 4 58 1 72 4 64 144 8 3 18 7 4 75 10 8 2 7 50 3 97 1 2 80 1 27 1 KRFN600CFAN3 57 4 68 1 90 6 139 16 6 9 1...

Page 77: ...1 317 1 120 Air flow CFM 2 825 2 503 2 190 100Pa Fan speed rpm 1 122 1 047 977 Power input W 1 526 1 280 1 079 Air flow CFM 2 759 2 401 2 105 150Pa Fan speed rpm 1 173 1 106 Power input W 1 452 1 230...

Page 78: ...Air flow CFM 2 951 2 574 2 223 100Pa Fan speed rpm 1 127 1 051 984 Power input W 1 591 1 377 1 126 Air flow CFM 2 825 2 438 2 146 150Pa Fan speed rpm 1 173 1 110 Power input W 1 525 1 338 Air flow CF...

Page 79: ...3 7 3 1 440 4 53 5 25 1 022 1 195 6 30 Example for selection process The following data are the rated design points for MRCT 085CWN1 R C rooftop packages Air flow 3520CFM External static pressure 0 3i...

Page 80: ...itch 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 Cross check the dim...

Page 81: ...907 896 885 876 866 858 849 858 828 Power input W 1 470 1 400 1 390 1 360 1 330 1 265 1 200 1 150 1 100 Air flow CFM 3 582 3 483 3 428 3 321 3 215 3 215 3 215 3 154 3 092 125 Fan speed rpm 910 900 886...

Page 82: ...put W 1 980 1 960 1 833 1 705 1 635 1 565 1 495 1 425 Air flow CFM 3 953 4 065 3 927 3 789 3 719 3 648 3 579 3 509 150 Fan speed rpm 1 009 991 991 990 988 983 978 983 942 Power input W 2 050 1 880 1 8...

Page 83: ...774 771 Power input W 3 175 3 078 2 980 2 868 2 755 2 643 2 530 2 455 2 380 2 278 2 175 Air flow CFM 6 151 6 069 5 987 5 901 5 814 5 711 5 608 5 534 5 461 5 363 5 265 700 Fan speed rpm 862 853 844 832...

Page 84: ...85 1 608 1 530 Air flow CFM 4 575 4 434 4 293 4 187 4 082 3 922 3 763 3 622 3 481 250 Fan speed rpm 869 860 850 838 827 816 806 795 784 Power input W 2 120 2 035 1 950 1 830 1 710 1 615 1 520 1 440 1...

Page 85: ...495 4 240 4 088 3 935 3 745 3 555 Air flow CFM 7 622 7 529 7 436 7 313 7 191 7 048 6 904 6 790 6 675 100 Fan speed rpm 1 035 1 028 1 021 1 008 995 988 982 971 959 Power input W 4 770 4 665 4 560 4 31...

Page 86: ...464 5 269 5 075 250 Fan speed rpm 1 097 1 089 1 082 1 072 1 061 1 053 1 044 1 038 1 033 Power input W 3 720 3 590 3 460 3 300 3 140 3 020 2 900 2 770 2 640 Air flow CFM 5 971 5 862 5 754 5 600 5 446 5...

Page 87: ...5 4 338 4 442 4 181 3 920 3 777 3 635 3 495 3 356 Air flow CFM 9 307 9 153 8 998 9 067 9 136 8 999 8 861 8 729 8 597 8 421 8 246 100 Fan speed rpm 1 013 1 005 998 991 984 976 968 959 951 942 933 Power...

Page 88: ...7 454 7 272 7 090 7 215 7 339 7 044 6 748 6 561 6 374 6 169 5 963 225 Fan speed rpm 1 033 1 019 1 006 1 000 994 Power input W 3 042 3 135 3 229 3 128 3 026 Air flow CFM 6 817 6 953 7 090 6 696 6 303 2...

Page 89: ...1 214 1 197 1 184 1 171 1 157 1 143 1 130 1 116 1 102 1 085 Power input W 6 738 6 390 6 180 5 970 5 754 5 539 5 328 5 118 5 069 4 748 Air flow CFM 10 628 10 540 10 453 10 367 10 207 10 047 9 898 9 749...

Page 90: ...433 Air flow CFM 9 505 9 301 9 183 9 019 8 877 8 693 8 508 8 291 8 074 7 871 7 669 7 387 7 138 250 Fan speed rpm 1 265 1 251 1 237 1 224 1 209 1 196 1 183 1 169 1 154 1 140 1 126 1 113 1 099 Power in...

Page 91: ...Air flow CFM 7 459 6 935 6 339 6 285 5 318 375 Fan speed rpm 1 280 1 267 1 254 Power input W 3 982 3 457 3 371 Air flow CFM 6 465 5 433 5 387 400 Fan speed rpm 1 284 Power input W 3 417 Air flow CFM 5...

Page 92: ...058 10 909 10 695 10 581 10 276 10 326 10 185 75 Fan speed rpm 1 075 1 062 1 040 1 036 1 029 1 011 1 004 987 976 966 937 941 928 Power input W 6 391 6 301 5 903 5 842 5 573 5 329 5 152 5 019 4 698 4 5...

Page 93: ...M 9 875 9 378 8 936 8 922 8 670 8 306 8 296 8 037 7 615 7 383 7 169 7 025 6 863 250 Fan speed rpm 1 080 1 067 1 053 1 042 1 034 1 018 1 008 994 984 970 942 947 933 Power input W 5 295 4 728 4 267 4 27...

Page 94: ...3 024 Air flow CFM 7 219 6 776 6 332 5 889 5 445 5 375 5 815 375 Fan speed rpm 1 087 1 074 1 062 Power input W 3 708 3 474 3 241 Air flow CFM 6 428 5 990 5 551 400 Fan speed rpm 1 088 Power input W 3...

Page 95: ...1 109 1 094 1 078 1 056 1 035 1 030 1 025 Power input W 8 425 8 425 7 490 7 160 6 831 9 544 6 258 6 241 6 225 Air flow CFM 13 089 13 089 12 619 12 384 12 149 11 897 11 644 11 591 11 539 100 Fan speed...

Page 96: ...520 Air flow CFM 12 356 11 835 11 735 11 139 11 016 11 016 10 298 9 875 9 452 9 175 8 898 8 708 8 518 250 Fan speed rpm 1 176 1 172 1 162 1 156 1 148 1 148 1 119 1 106 1 093 1 069 1 046 1 041 1 036 Po...

Page 97: ...3 1 173 1 165 1 155 1 140 1 126 Power input W 7 114 6 130 5 596 5 121 4 916 4 576 4 236 Air flow CFM 9 916 8 778 8 439 7 810 7 715 7 353 6 991 400 Fan speed rpm 1 195 1 185 1 175 1 166 1 156 1 141 1 1...

Page 98: ...Kentatsu Rooftop KRFN 98 Performance 8 Refrigerant cycle diagram KRFN220CFAN3 KRFN260CFAN3 KRFN300CFAN3 KRFN350CFAN3 KRFN440CFAN3 KRFN530CFAN3 KRFN600CFAN3 KRFN700CFAN3 KRFN880CFAN3 KRFN1050CFAN3...

Page 99: ...ance 99 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...

Page 100: ...nstallations 1 General information 101 2 Recommendations 102 3 Lifting 103 4 Installation 104 5 Condensate drainage 105 6 Duct work 106 7 Electrical wiring 107 8 Start up 111 9 Safety control 112 10 M...

Page 101: ...bjects into the air inlet or outlet When the fan is rotating at high speed it will cause injury Never use a flammable spray such as hair spray lacquer or paint near the unit It may cause a fire Keep f...

Page 102: ...ust be mounted level for proper drainage of water through the holes in the base pan Unit must not be exposed to direct roof water run off Flexible duct connectors must be of a flame retardant material...

Page 103: ...ging cables should have adequate capability to resist 3 times weight of unit Before lift please check and ensure that hooks are holding tightly to unit and lifting angles are no less than 60 Cloth mat...

Page 104: ...any ductwork outside of the structure with at least 2 inches of insulation and then weatherproof There must be a weatherproof seal where the duct enters the structure Complete the installation accordi...

Page 105: ...d weatherproof 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...

Page 106: ...ductwork must be weatherproofed between the unit and the building When attaching ductwork to a horizontal unit provide a flexible watertight connection to prevent noise transmission from the unit to t...

Page 107: ...rical technology Main power wiring to the unit control wiring between the control center and the unit and earth wiring are required in the field The following components are required main power fuses...

Page 108: ...FN260CFAN3 3 10mm 2 6mm 3 UL1015 7AWG 2 UL1015 9AWG KRFN300CFAN3 3 10mm 2 6mm 3 UL1015 7AWG 2 UL1015 9AWG KRFN350CFAN3 3 10mm 2 6mm 3 UL1015 7AWG 2 UL1015 9AWG KRFN440CFAN3 3 16mm 2 10mm 3 UL1015 5AWG...

Page 109: ...AN3 KRFN700CFAN3 KRFN880CFAN3 KRFN1050CFAN3 Wired controller wiring diagram Standard wired controller KRFN220CFAN3 KRFN260CFAN3 KRFN300CFAN3 KRFN350CFAN3 KRFN440CFAN3 KRFN530CFAN3 KRFN600CFAN3 KRFN700...

Page 110: ...Kentatsu Rooftop KRFN 110 Installation KRFN220CFAN3 KRFN260CFAN3 The standard wired controller model of these units is KFC 14...

Page 111: ...essary Does the condenser fan and indoor blower fan free without rubbing and are they tight on the shafts Are all covers and access panels in place to prevent air loss and safety hazards Starting the...

Page 112: ...ower than 90 C 194 F the compressor can be started again Reverse phase protection relay The reverse phase protection relay will make the unit not start when the power supply source is in correctly con...

Page 113: ...ssor is active 3 times within 1 hour E4 Unit shall be power off to recovery Error Evaporator pipe temperature sensor T2 in system A error E5 Error Evaporator pipe temperature sensor T2 in system B err...

Page 114: ...r in system A Pc Protection Anti freezing protection of evaporator in system B Pd Protection Protection of outdoor ambient temperature PA Notes If same protection which includes all system for 2 stage...

Page 115: ...een Low temperature protection of evaporator OFF FLASH OFF High temperature protection of condenser FLASH OFF OFF Wired controller communication error FLASH FLASH ON Low pressure protection FLASH ON F...

Page 116: ...116 Installation 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 pr...

Page 117: ...Rooftop KRFN Kentatsu Installation 117 High pressure protection High discharge temperature protection Wired controller communication error...

Page 118: ...Kentatsu Rooftop KRFN 118 Installation Low pressure protection Eeprom error...

Page 119: ...Rooftop KRFN Kentatsu Installation 119 Over current protection of indoor side fan motor Comprehensive protection of outdoor side fan motor...

Page 120: ...Kentatsu Rooftop KRFN 120 Installation High temperature protection of condenser Low temperature protection of evaporator Anti freezing protection of evaporator...

Page 121: ...Rooftop KRFN Kentatsu Installation 121 Protection of outdoor ambient temperature...

Page 122: ...efore cleaning and maintenance Regular maintenance Some regular maintenance has been carry on by user It includes change the one time dust filter clean casing wash condenser and replace a new belt as...

Page 123: ...flection 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 Belt section For required to d...

Page 124: ...ng please dry out in cool place Do not dry out the air filter under direct sunshine or heat Step 3 Re install the air filter Condenser coil Unfiltered air circulates through the unit s condenser coil...

Page 125: ...ty 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...

Page 126: ...5 831 25 339 24 853 0 36 0 38 7 24 513 24 058 23 609 0 36 0 37 8 23 270 22 850 22 435 0 35 0 36 9 22 097 21 710 21 327 0 34 0 36 10 20 991 20 633 20 279 0 33 0 35 11 19 947 19 617 19 290 0 32 0 34 12...

Page 127: ...29 32 7 3947 7 2985 7 2028 0 29 0 31 33 7 0805 6 9853 6 8906 0 30 0 32 34 6 7814 6 6873 6 5939 0 32 0 33 35 6 4968 6 4038 6 3116 0 33 0 34 36 6 2257 6 1340 6 0431 0 34 0 35 37 5 9676 5 8772 5 7875 0 3...

Page 128: ...42 2 7806 0 58 0 60 56 2 8017 2 7382 2 6760 0 60 0 61 57 2 6990 2 6369 2 5759 0 61 0 63 58 2 6006 2 5398 2 4802 0 63 0 64 59 2 5064 2 4469 2 3886 0 64 0 66 60 2 4162 2 3580 2 3009 0 65 0 67 61 2 3298...

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