Airooled Screw Chiller Air Conditioning System R134a 75 to 350 RT
Introduction General Description LS air-cooled water chillers are complete, self-contained automatic refrigerating units that include the latest in engineering components arranged to provide a compact and efficient unit. Each unit is completely assembled; factory wired, evacuated, charged, tested and comes complete and ready for installation. Each unit consists of multiple air-cooled condensers with integral sub-cooler sections, one or more accessible semi-hermetic doublescrew compressors, star-delta starters, flooded type shell-and-tube evaporator, and complete refrigerant piping. Liquid line components included are manual liquid line shutoff valves, charging valves, filter-driers, liquid line solenoid valves, sight glass/moisture indicators, and electronic expansion valves. Nomenclature S A X X X C S A H - 3 Y F Evaporator type : F-flooded Start mode : Y-Δ Power : 3-380V 50Hz, 4-415V 50Hz, 5-440V 50Hz, 6-380V 60Hz H-high ambient, S-standard ambient Refrigerant : A-R134a Modules : S-single, D-double, T-triple Chiller type : C-cooled water chiller Capacity (RT) Cooling mode : Air cooled Compressor type : Semi-hermetic screw Inspection When the equipment is received, all items should be carefully checked against the bill of lading to ensure a complete shipment. All units should be carefully inspected for damage upon arrival. The unit s serial plate should be checked before unloading the unit to be sure that it agrees with the power supply available. Physical damage to unit after acceptance is not the responsibility of LS Company. 02 LS Airooled Screw Chillers
Specifications System Flow Chart Note: This is the flow chart of single refrigerant circuit type of air-cooled screw liquid chiller. For multi refrigerant circuit chillers each compressor has its own separate circuit as above. Compressor and windage losses. The nodular cast iron compressor casing encloses compressor, electric motor and oil separator in a single accessible housing ensuring the minimum levels of noise breakout and vibration. This rugged structure ensures stable and reliable operation in ambient temperatures ranging from -15 to +55 c. Cooler Type: The semi-hermetic twin screw compressor used in Model SA liquid chillers has the advantage of hermetically sealing the refrigerant and lubricating oil inside the compressor while allowing technicians access to service and repair internal moving parts. Capacity Control: Is achieved using a slide valve which automatically modulates compressor capacity in 4 steps 25%, 50%, 75% and 100% with equivalent reductions in energy consumption. Compressor Starting: The compressor starts fully unloaded using the star-delta (Y/Δ) method to minimize starting current inrush. Compressor Characteristics: Using the optimum screw rotor profile and precision machining of all components achieves minimum operating clearances to ensure the highest volumetric and compression efficiency and minimum friction All SA liquid chillers are fitted with a single cooler of the Flooded shell and tube type having refrigerant in the shell and chilled water inside the tubes. The shell is of welded alloy steel construction with steel tube sheets and copper heat exchange tubes. Removable steel water boxes at both ends of the cooler allow tube cleaning without disturbing the refrigerant circuit. Tubes are mechanically expanded into tube sheets with double grooves to ensure leak tight and trouble free operation. Multiple compressor/ circuit chillers have coolers with separate refrigeration circuits for each compressor. Each refrigeration circuit is provided with its own double safety LS Airooled Screw Chillers 03
Specifications (Continued) pressure relief valve. All chillers are fitted with drain valves on the removable heads and shell. All coolers are factory insulated with 25mm of closed cell expanded synthetic rubber with all joints vapor sealed. Coolers are designed in accordance with ASME guidelines and are rated according to the following pressures. REFRIGERANT SIDE WATER SIDE Kg/Sq. cm Lbs/Sq. cm Kg/Sq. Inch Lbs/Sq. Inch DESIGN PRESSURE 16 230 10.5 145 TEST PRESSURE 18 260 12.5 180 High efficiency heat transfer tubes are used in Model SA coolers having the external (refrigerant side) sur face expanded with saw tooth type fins. The inside surface has helical grooves to induce a swirling motion in the chilled water which improves heat transfer efficiency. Air Cooled Condenser Condenser coils are constructed from copper tubes with spiral grooves on their inside surface to maximize heat transfer efficiency. Aluminum condenser fins have a corrosion resistant and hydrophilic coating to minimize dust and moisture accumulation and ensure a long working life. The fins have rippled and louvered surfaces to improve heat dissipation efficiency. Each condenser section comprises 4 coils in a reversed M arrangement which ensures that at least 3 coils are always shaded from direct solar r a d i a t i o n a n d c a n t h e re f o re operate satisfactorily in ambient temperature up to 52 C (125 F). Condenser fans are axial type using high strength pressed and formed aluminum alloy fan blades mechanically attached to rustless steel fan hubs. Fan motors are waterproof rated to IP-54 with class F insulation suitable for operation in temperatures from -20 c to 65 c (-4 F to 150 F). control the refrigerant flow through the cooler. The very low pressure losses associated with electronic expansion v a l v e s e n s u r e s t h a t f u l l operating cost savings can be achieved during cooler seasons when ambient temperatures and condensing pressures are reduced. Economizer This is a standard feature of all Model SA liquid chillers. Economizers improve the efficiency of the compressor and refrigeration system and increase the capacity of the chiller. Control Center All SA liquid chillers are equipped with a factory fitted and wired control center mounted on one end of the chiller unit. The high voltage section incorporates compressor and fan contractors and safety controls and is protected by a door interlocked isolator. The low voltage control section is accessed by a separate lockable door and houses the microprocessor controller and LED screen displaying operating and historical date. For high ambient units a double panel (panel within a panel) arrangement is used with thermostatically controlled fans to ventilate the inter-panel space and prevent sunbaking in tropical areas causing excessively high temperatures inside the panel. Electronic Expansion Valve This is a standard feature on each refrigeration circuit on all Model SA liquid chillers, Electronic expansion valves ensure stable operation throughout their operating range and precisely 04 LS Airooled Screw Chillers
Factory Options Remote Monitoring System A remote monitoring system is available as an accessory for field installation. Vibration Isolators A feature of all Model SA chillers is their very low levels of noise and vibration. For most outdoor installations where chillers are positioned directly on a ground level concrete slab chillers can be quite satisfactorily mounted on the neoprene isolation pads that are supplied with the unit. For installation on building roofs or in sensitive noise areas (hospitals, studios and some residential areas) pre selected spring type isolators are available as a factory option shipped loose for field installation. High Static Condenser Fans These are available for certain models to provide increased airflow over condenser coils and increased cooling capacity or increased static pressure in installations where exhaust air has to be ducted away from the chiller. Specific performance data and costs can be provided for this option on application to LS Air Conditioning Co. Anti- Freeze Heaters For installations where ambient temperatures can fall to 0 c or below, factory installed and thermostatically controlled heater mats are available as an accessory to prevent freezing of water inside the cooler, tubes and waterboxes. Optimisation Main / Auxiliary Unit For multi chiller installations an optional Master Controller can be factory fitted to one of the chillers. This Master Controller will sequence up to four additional Slave chillers to optimize chiller running hours and energy consumption. ESD(Energy Saving Drive) Reduce Energy Use The energy saving drive (ESD) technology revolutionized the performance of air cooled chillers. ESD is a complete and high-quality device with a variable frequency drive inside. By modulating the frequency of the input power, it can always match chiller capacity to the building load and significantly lower energy consumption. And if an ESD is installed in the constant-speed chiller, almost 20% of the energy will be saved. KW/ton 1.3 1.1 0.9 0.7 0.5 ESD Non-ESD 0.3 100 75 50 25 Load (%) This graph shows typical energy savings when an ESD is installed on a constant speed chiller. Reduce electrical demand charges Along with lowering energy consumption, an ESD delivers other cost saving benefits, like the possible elimination of electrical demand charges. Electrical demand charges may be reduced because the motor will always start at low frequencies and maintain inrush current at or below full load amps. And the electronics and circuitry can be designed for Minimum Current Amps which reduces the size and cost of chiller wiring. Reduce Motor Stress Another important benefit of an ESD installation is that it reduces stress on your chiller s motor. Unlike conventional motor starters, an ESD avoids the sudden current surges that shock motors and drives during start-up. Starting the compressor slowly and then bringing it up to speed gradually reduces equipment stress. Multi-compressor Option Models SA125 and SA150 are also available with 2-compressor and refrigeration circuits. LS Airooled Screw Chillers 05
Physical Data - High Ambient Models MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350 Nominal cooling capacity(kw) 263 344.7 443.3 519.6 608 689 788 886.6 924.3 1033.7 1132.3 1242.6 Power supply 3PH 380/220V 50Hz Nominal total power(kw) 115.6 150.1 193.5 226.1 274.2 302.1 343.6 387 427.4 452.1 495.6 542.6 Normal running current(a) 233.9 286.1 367.2 430.3 521.8 572.2 653.3 734.4 762.6 858.3 939.4 1017.2 Safety protection Type High/low pressure protection, water flow failier protection, low water temperature protection, motor overload, phase-failure and phase sequence protection. Rotary Screw Compressor Compressor Quantity 1 1 1 1 2 2 2 2 2 3 3 3 Motor Kw 108.4 139.3 179.1 208.1 252.6 280.5 318.4 358.2 398.6 419.7 459.6 506.6 Oil charge liters 20 23 28 28 23/23 23/23 23/28 28/28 28/28 28/28/28 28/28/28 28/28/28 Fan motor type Axial Air cooled condenser Quantity of fan motor 4 6 8 10 6/6 6/6 6/8 8/8 8/8 6/6/6 6/6/8 6/6/8 Motor Kw (each) 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960 Heat exchanger type Type High Efficiency Copper Tube with Aluminum Fins Shell and tube high efficiency heat exchanger Chilled water cooler Water side working pressure(kg/sq cm) Nominal flow(m³/h) 46 59.1 76 89.1 104.2 118.1 135.1 152 158.4 177.2 194.1 213 Water resistance(kpa) 50 50 55 55 55 60 58 60 60 65 65 65 14 Water pipe diameter(dn) 100 100 125 125 150 150 150 150 150 200 200 200 Type R134a Refrigerant Charge / Circuit (kg) 165 220 275 330 185/185 210/210 210/230 250/250 275/275 210/210/210 210/210/230 210/210/250 No. of Circuits 1 1 1 1 2 2 2 2 2 3 3 3 Outline dimension length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650 width(mm) 2200 height(mm) 2400 Net weight of unit(kg) 3464 4159 4557 5380 6253 7462 7615 7868 8340 9118 9726 10018 Operating weight of unit(kg) 3727 4519 4964 5835 6711 8010 8172 8444 9021 9839 10495 10810 Noise db(a) 74 74 74 78 78 78 78 79 79 80 80 80 Note: 1. The nominal cooling capacities (stated above) are at chilled water temperatures of 12/7 c and ambient of 46 c. 2. Fouling Factor of evaporator is 0.086 m2. k/kw. 3. Specification may be changed without further notification. 4. The unit conforms to standard ARI 550/590-98. 5. The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above. 6. Noise db : Sound pressure level at 10 meters. 06 LS Airooled Screw Chillers
Physical Data - Standard Ambient Models MODEL SA 75 100 125 150 170 210 225 250 270 300 325 350 Nominal cooling capacity(kw) 263.2 351.9 462.7 535.1 591.2 703.8 814.6 861.9 925.4 1055.7 1137 1197.5 Power supply 3PH 380/220V 50Hz Nominal total power(kw) 82.9 110.4 145.1 167.9 186.8 220.8 255.5 270.8 290.2 331.2 356.9 389.6 Normal running current(a) 150.8 204 262.4 307.3 353.2 408 466.4 495.4 524.8 612 670.4 708.4 Safety protection Type High/low pressure protection, water flow failier protection, low water temperature protection, motor overload, phase-failure and phase sequence protection. Rotary Screw Compressor Compressor Quantity 1 1 1 1 2 2 2 2 2 3 3 3 Motor Kw 76.5 100.8 132.3 151.9 167.6 201.6 233.1 245.2 264.6 302.4 324.9 357.6 Oil charge liters 15 23 23 28 18/18 23/23 23/23 23/23 28/28 23/23/23 23/23/23 23/23/28 Air cooled condenser Fan motor type Quantity of fan motor Axial 4 6 8 10 6/6 6/6 6/8 8/8 8/8 6/6/6 6/6/8 6/6/8 Motor Kw (each) 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 1.6 Fan RPM 960 960 960 960 960 960 960 960 960 960 960 960 Heat exchanger type Type High Efficiency Copper Tube with Aluminum Fins Shell and tube high efficiency heat exchanger Chilled water cooler Water side working pressure(kg/sq cm) Nominal flow(m³/h) 45.1 61.2 79.3 91.7 104.2 122.4 139.6 147.7 158.6 180.9 199.9 212.7 Water resistance(kpa) 50 50 55 55 58 58 58 60 60 65 65 65 Water pipe diameter(dn) 100 100 125 125 150 150 150 150 150 200 200 200 14 Type R134a Refrigerant Charge / Circuit (kg) 130 215 250 300 175/175 185/185 210/230 250/250 275/275 210/210/210 210/210/230 210/210/250 No. of Circuits 1 1 1 1 2 2 2 2 2 3 3 3 Outline dimension length(mm) 3150 3950 4950 6000 7050 7050 8550 9550 9550 10650 11650 11650 width(mm) 2200 height(mm) 2400 Net weight of unit(kg) 3424 4219 4476 5355 6173 7402 7504 7706 7889 9058 9585 10018 Operating weight of unit(kg) 3687 4489 4883 5810 6631 7950 8061 8282 8570 9779 10354 10665 Noise db(a) 74 74 74 78 78 78 78 79 79 80 80 80 Note: 1. The nominal cooling capacities (stated above) are at chilled water temperatures of 12/7 c and ambient of 35 c. 2. Fouling Factor of evaporator is 0.086 m2. k/kw. 3. Specification may be changed without further notification. 4. The unit conforms to standard ARI 550/590-98. 5. The cooling capacity and power supply is measured with the economizer at the nominal operating conditions defined in Note 1 above. 6. Noise db : Sound pressure level at 10 meters. LS Airooled Screw Chillers 07
Ratings - High Ambient Models MODEL SA075 SA100 SA125 SA150 SA170 SA210 Leaving Chilled Liquid C Condenser Air Entering Temperature C 25 30 35 40 46 50 cool Power cool Power cool Power cool Power cool Power cool Power KW KW KW KW KW KW KW KW KW KW KW KW 5 299 69 297 74 272 78 262 83 252 107 232 112 7 319 72 308 77 290 81 280 86 263 116 250 116 10 339 76 332 80 320 85 309 90 289 117 278 121 12 348 78 334 83 328 88 317 93 306 120 295 125 15 357 80 344 86 335 92 322 96 311 125 309 130 5 392 93 385 99 375 105 362 111 332 137 309 143 7 409 97 392 109 380 119 367 145 345 150 332 148 10 421 102 403 112 391 125 376 150 353 152 349 156 12 439 105 420 115 406 138 388 153 376 154 382 161 15 450 109 439 120 423 142 398 156 388 161 393 167 5 496 111 475 119 451 126 435 372 422 162 393 168 7 529 116 507 124 481 131 465 398 443 194 423 175 10 578 122 557 129 531 138 513 440 491 206 470 183 12 612 126 590 134 561 142 543 465 519 212 499 190 15 661 131 636 139 606 148 586 502 560 219 539 197 5 622 152 596 162 566 172 545 182 492 214 458 199 7 662 158 636 168 603 178 582 188 520 226 492 206 10 725 166 698 177 664 188 642 198 582 233 547 217 12 767 172 739 183 702 194 680 205 616 240 581 224 15 827 178 797 189 759 202 733 213 665 249 627 233 5 689 185 660 197 662 208 604 206 579 264 539 275 7 704 192 675 204 645 216 626 213 608 274 579 285 10 724 202 694 214 677 227 642 224 626 287 644 300 12 750 208 719 221 692 235 684 231 645 297 684 310 15 788 216 733 229 728 245 704 241 663 310 738 322 5 758 202 790 215 710 228 692 239 666 296 614 309 7 778 210 743 223 730 237 702 248 689 307 667 320 10 801 221 776 235 741 249 721 260 709 323 701 336 12 817 228 799 243 782 258 751 269 735 334 727 348 15 997 237 956 252 907 268 773 280 842 346 840 362 Note: 1. High ambient models are suitable for operation in ambient temperatures up to 52 c (125 F) 2. Fouling factor of evaporator is 0.086 m2. k/kw. 3. Specification may be changed without further notification 4. The unit conforms to standard ARI 550/590-98. 5. The cooling capacity and power supply is measured with the economizer. 6. Power consumption values include compressors and fans. 08 LS Airooled Screw Chillers
Ratings - High Ambient Models (Continued) MODEL SA225 SA250 SA270 SA300 SA325 SA350 Leaving Chilled Liquid C Condenser Air Entering Temperature C 25 30 35 40 46 50 cool Power cool Power cool Power cool Power cool Power cool Power KW KW KW KW KW KW KW KW KW KW KW KW 5 958 267 973 278 992 289 821 298 768 335 745 317 7 978 296 993 309 1012 321 838 331 787 344 760 352 10 1163 299 1181 312 1204 324 997 335 936 351 904 356 12 1232 305 1251 319 1275 331 1056 341 994 357 958 363 15 1330 311 1350 325 1376 337 1140 348 1073 370 1034 370 5 1077 300 1094 313 1115 325 923 335 869 348 745 356 7 1099 333 1116 348 1138 361 942 372 887 387 760 396 10 1308 336 1328 351 1354 365 1121 376 1056 391 904 400 12 1385 343 1406 358 1433 372 1187 384 1118 399 958 408 15 1495 350 1518 365 1547 379 1281 391 1206 406 1034 416 5 1145 256 1096 272 1041 313 1005 304 932 383 901 400 7 1220 265 1171 281 1111 325 1074 316 924 427 968 414 10 1335 278 1286 296 1224 341 1184 332 1104 418 1076 434 12 1413 288 1361 303 1295 353 1253 343 1168 432 1143 450 15 1526 388 1470 316 1397 367 1353 356 1260 448 1233 467 5 1243 307 1191 323 1131 343 1077 365 1000 460 966 479 7 1325 319 1272 335 1206 356 1152 379 1034 452 1038 497 10 1450 334 1396 353 1329 374 1269 398 1184 501 1154 522 12 1534 376 1477 364 1406 387 1345 411 1252 518 1226 540 15 1656 391 1596 379 1518 402 1451 426 1352 539 1323 560 5 1380 384 1402 401 1429 417 1183 430 1109 446 745 457 7 1408 427 1430 446 1458 463 1207 477 1132 496 760 508 10 1676 431 1702 450 1735 467 1437 482 1347 501 904 513 12 1775 440 1802 459 1837 477 1521 492 1426 511 958 523 15 1915 448 1945 468 1983 486 1642 501 1540 521 1034 533 5 1511 421 1534 439 1564 456 1295 470 1218 489 745 500 7 1542 467 1566 488 1596 507 1322 522 1243 543 760 556 10 1835 472 1863 493 1899 512 1573 528 1479 548 904 561 12 1943 481 1973 502 2011 522 1666 538 1566 559 958 572 15 2097 491 2129 512 2171 532 1798 549 1690 570 1034 583 Note: 1. High ambient models are suitable for operation in ambient temperatures up to 52 c (125 F) 2. Fouling Factor is 0.086 m2. k/kw. 3.Specification may be changed without further notification 4. The unit conforms to standard ARI 550/590-98. 5.The cooling capacity and power supply is measured with the economizer. 6. Power consumption values include compressors and fans. LS Airooled Screw Chillers 09
Ratings - Standard Ambient Models MODEL Leaving Chilled Liquid C Condenser Air Entering Temperature C 25 30 35 40 46 50 cool Power cool Power cool Power cool Power cool Power cool Power KW KW KW KW KW KW KW KW KW KW KW KW 4.5 263 71 295 75 240 80 232 84 212 105 196 108 5 272 72 303 76 247 81 238 85 220 106 202 111 6 280 72 314 77 255 81 246 87 227 106 210 112 SA075 SA100 SA125 SA150 7 290 74 325 79 263 83 255 89 235 109 218 115 10 316 78 355 82 291 88 281 93 260 115 241 120 12 335 81 286 85 307 91 297 96 275 119 257 124 15 361 82 286 89 332 95 320 99 296 124 277 128 4.5 335 93 343 336 327 105 315 111 289 138 269 143 5 363 94 348 341 330 106 319 112 291 139 272 144 6 374 96 359 352 341 108 330 113 301 140 282 146 7 386 98 371 364 352 110 341 116 314 143 291 149 10 424 103 407 400 388 116 374 122 346 151 326 157 12 448 106 432 423 410 119 399 127 366 155 345 164 15 483 110 465 457 443 123 430 132 394 164 372 169 4.5 473 123 453 130 429 139 414 407 403 178 374 186 5 477 123 457 131 434 140 419 411 406 179 379 187 6 493 125 473 133 448 142 434 424 421 181 392 190 7 508 128 488 137 463 145 447 440 435 186 407 194 10 557 134 535 143 510 152 494 486 482 194 452 202 12 589 140 568 148 538 157 522 514 508 200 480 210 15 636 145 612 153 582 164 564 555 549 208 518 217 4.5 546 143 523 153 498 162 477 170 431 201 402 187 5 551 144 529 154 503 163 483 172 436 201 407 188 6 569 146 546 155 519 164 502 173 451 205 421 191 7 588 150 564 159 535 168 517 178 468 210 436 194 10 643 157 620 167 589 178 570 187 517 220 485 205 12 681 163 656 173 624 183 604 193 547 227 515 211 15 734 168 707 179 673 191 651 201 590 236 555 220 Note: 1. Standard models are designed for operation in ambient temperatures up to 46 c (115 F). When ambient temperatures rise above 46 c compressors will progressively unload to prevent trips on high pressure/temperature/current. 2. Fouling factor of evaporator is 0.086 m2. k/kw. 3. Specification may be changed without further notification 4. The unit conforms to standard ARI 550/590-98. 5. The cooling capacity and power supply is measured with the economizer. 6. Power consumption values include compressors and fans. 10 LS Airooled Screw Chillers
Ratings - Standard Ambient Models (Continued) MODEL Leaving Chilled Liquid C Condenser Air Entering Temperature C 25 30 35 40 46 50 cool Power cool Power cool Power cool Power cool Power cool Power KW KW KW KW KW KW KW KW KW KW KW KW 4.5 571 159 547 171 547 179 501 177 477 227 445 236 5 576 159 553 170 554 180 506 178 485 229 451 238 6 596 162 571 173 571 182 524 180 501 232 468 242 SA170 SA210 SA270 SA320 7 614 166 591 177 591 187 541 184 519 234 485 246 10 673 175 649 185 650 196 596 194 574 248 539 259 12 711 180 685 192 689 203 631 200 607 257 572 268 15 768 187 739 198 742 211 681 209 655 268 617 278 4.5 718 188 688 201 653 213 629 222 580 276 534 288 5 724 189 695 202 659 214 635 223 586 276 540 289 6 749 192 718 204 682 216 658 228 606 281 565 292 7 773 197 741 208 704 221 680 232 628 287 587 299 10 846 206 814 219 775 233 750 243 694 302 651 315 12 895 214 862 228 820 241 793 251 734 313 692 325 15 965 221 929 236 886 250 856 262 820 323 749 338 4.5 992 241 952 257 905 294 873 287 809 360 782 374 5 1004 242 962 257 913 296 882 288 817 363 791 378 6 1038 245 993 261 944 300 912 292 845 367 818 383 7 1070 250 1029 266 975 307 942 298 876 374 849 392 10 1172 263 1129 279 1074 322 1039 314 969 395 944 411 12 1240 272 1194 287 1136 333 1099 324 1025 408 1003 424 15 1339 367 1289 298 1226 347 1187 337 1105 423 1082 442 4.5 1091 288 1047 304 994 323 947 344 878 434 849 452 5 1102 290 1056 306 1003 325 956 346 887 437 857 455 6 1138 295 1091 311 1038 330 990 351 916 443 888 462 7 1175 302 1128 318 1070 338 1021 359 950 448 921 471 10 1286 317 1238 334 1179 354 1126 377 1050 475 1023 495 12 1360 356 1311 345 1247 367 1193 390 1110 491 1087 512 15 1468 371 1416 359 1347 381 1287 404 1199 511 1173 532 Note: 1. Standard models are designed for operation in ambient temperatures up to 46 c (115 F). When ambient temperatures rise above 46 c compressors will progressively unload to prevent trips on high pressure/temperature/current. 2. Fouling factor of evaporator is 0.086 m2. k/kw. 3. Specification may be changed without further notification 4. The unit conforms to standard ARI 550/590-98. 5. The cooling capacity and power supply is measured with the economizer. 6. Power consumption values include compressors and fans. LS Airooled Screw Chillers 11
Water Pressure Drop Water Pressure Drop Through Evaporator Pressure Drop (kpa) Water Flow Rate (l/s) Line A B C D E F Symbol SA075, SA100 SA125, SA150 SA170, SA210 SA250, SA270 SA300 SA325, SA350 12 LS Airooled Screw Chillers
Operating Limitations MODEL SA 75 100 125 150 170 210 Min Max Min Max Min Max Min Max Min Max Min Max Water Leaving Temp C 4.5 to 15 Cooling Range (Entering Leaving) C 3 to 20 Evaporator Flow Rate m3/h 18 57 30 59 32 86 33 105 42 107 41 126 Evaporator Pressure Drop kpa 8.5 100 11 120 11 130 12 110 13 115 12 118 Maximum Water side Pressure bar 10 Air Entering Temperature C -10 to 52 Fan Available Static Pressure kpa 10 Maximum Refrigerant Side Pressure bar 16 Power Supply Voltage 3PH 380 50Hz 340 to 420 Max Running Current(A) High Ambient Model 350.9 429.2 550.8 645.5 782.7 858.3 Standard Ambient Model 292 391 501 594 715.1 784.1 MODEL SA 225 250 270 300 325 350 Min Max Min Max Min Max Min Max Min Max Min Max Water Leaving Temp C 4.5 to 15 Cooling Range (Entering Leaving) C 3 to 20 Evaporator Flow Rate m3/h 49 138 53 155 48 159 55 188 57 200 64 220 Evaporator Pressure Drop kpa 15 122 18 128 18 128 21 134 21 134 22 138 Maximum Water side Pressure bar 10 Air Entering Temperature C -10 to 52 Fan Available Static Pressure kpa 10 Maximum Refrigerant Side Pressure bar 16 Power Supply Voltage 3PH 380 50Hz 340 to 420 Max Running Current(A) High Ambient Model 978 1101.6 1143.9 1287.5 1409.1 1525.8 Standard Ambient Model 893.5 1006.4 1045.1 1176.3 1287.4 1394 Max running Current values included compressors and fans. LS Airooled Screw Chillers 13
Electrical Data 1 Compressor Unit - Standard ambient model SA MODEL Volts(V) Freq.(Hz) Compressor Fans RLA MCC Start Amps Qty. RLA 075 380 50 131 216 328 4 5 100 380 50 174 292 435 6 5 125 380 50 223 365 558 8 5 150 380 50 258 422 645 10 5 - High ambient model SA MODEL Volts(V) Freq.(Hz) Compressor Fans RLA MCC Start Amps Qty. RLA 075 380 50 214 271 535 4 5 100 380 50 256 317 640 6 5 125 380 50 327 404 818 8 5 150 380 50 380 490 951 10 5 2 Compressor Unit - Standard ambient model SA MODEL Volts(V) Freq.(Hz) System Compressor Fans RLA MCC Start Amps Qty. RLA 170 380 50 l 161 271 403 6 5 ll 161 271 403 6 5 210 380 50 l 174 292 435 6 5 ll 174 292 435 6 5 225 380 50 l 174 292 435 6 5 ll 223 365 558 8 5 250 380 50 l 193 317 483 8 5 ll 223 365 558 8 5 270 380 50 l 223 365 558 8 5 ll 223 365 558 8 5 - High ambient model SA MODEL Volts(V) Freq.(Hz) System Compressor Fans RLA MCC Start Amps Qty. RLA 170 380 50 l 231 292 577 6 5 ll 231 292 577 6 5 210 380 50 l 256 317 640 6 5 ll 256 317 640 6 5 225 380 50 l 256 317 818 6 5 ll 327 404 818 8 5 250 380 50 l 327 404 818 8 5 ll 327 404 818 8 5 270 380 50 l 341 422 853 8 5 ll 341 422 853 8 5 14 LS Airooled Screw Chillers
Electrical Data (Continued) 3 Compressor Unit - Standard ambient model SA MODEL Volts(V) Freq.(Hz) System 300 380 50 325 380 50 350 380 50 - High ambient model SA MODEL Volts(V) Freq.(Hz) System 300 380 50 325 380 50 350 380 50 Compressor Fans RLA MCC Start Amps Qty. RLA l 174 292 435 6 5 ll 174 292 435 6 5 lll 174 292 435 6 5 l 174 292 435 6 5 ll 174 292 435 6 5 lll 223 365 558 8 5 l 193 317 483 6 5 ll 193 317 483 6 5 lll 223 365 558 8 5 Compressor Fans RLA MCC Start Amps Qty. RLA l 256 317 640 6 5 ll 256 317 640 6 5 lll 256 317 640 6 5 l 256 317 640 6 5 ll 256 317 640 6 5 lll 327 404 818 8 5 l 295 365 738 6 5 ll 295 365 738 6 5 lll 327 404 818 8 5 Note: RLA: Rated Load Amps MCC: Maximum Continuous Current LS Airooled Screw Chillers 15
Electrical Data (Continued) High Ambient Model for 46 C Nominal Ambient Operation Electricity Supply 380/3/50 Model No. Chiller Total Power Input Nominal Kw Maximum Kw Nominal Running Amps Maximum Running Amps Maximum Start Amps SA-75 115.6 173.4 233.9 350.9 641.7 SA-100 150.1 225.2 286.1 429.2 768.3 SA-125 193.5 290.3 367.2 550.8 981.6 SA-150 226.1 339.2 430.3 645.5 1140.9 SA-170 274.2 411.3 521.8 782.7 692.7 SA-210 302.1 453.2 572.2 858.3 768.3 SA-225 343.6 515.4 653.3 978.0 981.6 SA-250 387.0 580.3 734.4 1101.6 981.6 SA-270 427.4 641.1 762.6 1143.9 1023.9 SA-300 452.1 678.2 858.3 1287.5 768.3 SA-325 495.6 743.4 939.4 1409.1 981.6 SA-350 542.6 813.9 1017.2 1525.8 1140.9 Note: 1. Chiller total power includes all compressors and condenser fans running. 2. Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 46 c with leaving chilled water temperature of 7 c. 3. Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values. 4. Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running. 5. Max running Amps values include compressors and fans. Standard Model for 35 C Nominal Ambient Operation Electricity Supply 380/3/50 Model No. Chiller Total Power Input Nominal Kw Maximum Kw Nominal Running Amps Maximum Running Amps Maximum Start Amps SA-75 82.9 124.4 150.8 292.0 392.4 SA-100 110.4 165.6 204.0 391.0 828.0 SA-125 145.1 217.7 262.4 501.0 667.2 SA-150 167.9 251.9 307.3 594.0 771.9 SA-170 186.8 280.2 353.2 715.1 439.8 SA-210 220.8 331.2 408.0 784.1 828.0 SA-225 255.5 383.3 466.4 893.5 667.2 SA-250 270.8 406.2 495.4 1006.4 667.2 SA-270 290.2 435.3 524.8 1045.1 667.2 SA-300 331.2 496.8 612.0 1176.3 828.0 SA-325 356.9 535.4 670.4 1287.4 667.2 SA-350 389.6 584.4 708.4 1394.0 771.9 Note: 1. Chiller total power includes all compressors and condenser fans running. 2. Nominal Kw and Amps (above) apply when chiller is operating in an ambient temperature of 35 c with a leaving chilled water temperature of 7 c. 3. Max Kw and Amps (above) apply when chiller is operating at extreme limits beyond which safety controls will prevent higher values. 4. Max Start Amps occur when the last compressor starts while all other compressors and condenser fans are already running 5. Max running Amps values include compressors and fans. 16 LS Airooled Screw Chillers
Chiller Control Automatic PLC Controller Model SA liquid chillers are equipped with PLC controllers which are housed in the low voltage section of the unit Control Center. The primary functions of the PLC are: Time Table Running Up to 3 start/stop programmes /day can be achieved. Soft Loading Function This ensures that the chiller will operate stably during system start up, when large fluctuations in cooling load can occur. To automatically start and stop the chiller in response to Cooling Demand signals. To start and stop individual compressors and associated condenser fans and to modulate the compressor capacity by unloading the compressor slide valve in response to unit cooling load. To activate and control peripheral equipment (i.e. chilled water pumps). To continuously monitor operating temperatures and safety controls and display readouts both locally and remotely. Optimization Main Auxiliary Unit For multi-compressor units an optimization function is available to equalize the running time of each compressor/ condenser assembly. For multi chiller installations one unit can be selected as the master and its controller will sequence up to 4 slave chillers. (option) Analogue data display function This function monitors and displays analog signals of refrigeration system temperatures and pressures. Network Control Function Model SA liquid chillers have interfaces for RS-232 & RS-485 and can work with MODBUS protocols. Each chiller can operate as a Master or Slave unit in a group control network. (option) Automatic and remote control of peripherals Remote start/stop function via cabled connection. On/Off of chiller and system peripherals together with functional monitoring can be achieved through remote BMS System. LS Airooled Screw Chillers 17
Typical Starter Diagram-1 Compressor MAIN POWER SUPPLY 3PH 380VAC 50/60HZ R0 S0 T0 NFB1 600V R1 S1 T1 CT 1M U V W P MOTOR X Y Z L1 L2 L3 VP 11 12 14 107 IT C1 5 1 2 C2 3 2 6 4 AI3 G NFB2 10A R01 T01 TO CONTROL PANEL 380V 220V TR R02 700VA 2M S PB R11 S11 T11 L1 L2 L3 U11 V11 U12 V12 88 F1 W11 51 U21 F1 W12 U22 V21 V22 F2 88 W21 51 F2 W22 FM1 FM2 230 231 232 KM1 KM2 KM3 301 302 303 158 2M 161 164 S 51 51 51 F1 F2 F3 171 172 173 1M 2M 1 2 88 F3 MP M1 M2 N 106 U31 V31 U32 V32 FM3 233 174 F4 51 4 88 F3 W31 51 F3 W32 U41 V41 U42 V42 FM4 88 F4 W41 51 F4 W42 STARTER PNL BODY WIRING R02 R02 CONTROL PNL R02 STOP SGL. EMERGERNCY ELECTRICAL PART LIST 1 1M,2M,S MAGNETIC CONTACTOR 2 NFB1 MOLDED CASED CIRCUIT BREAKER 3 NFB2 NO FUSE BREAKER 4 TR TRANSFORMER 700VA 5 PB EMERGERNCY STOP SWITCH 6 MP MOTOR PROTECT RELAY 7 VP POWER PROTECTOR 8 IT AMPERE TRANSDUCER 9 CT CURRENT TRANSFORMER 10 1-4 MAGNETIC CONTACTOR 11 51F1-4 THERMAL RELAY 12 FM1-4 COOLING FAN 13 FAN COOLING FAN 14 KM1-3 AUX.RELAY CONTACT FROM CONTROL PNL Note 1. THESE PARTS ARE LOCATED IN CONTROL PANEL. 2. THESE PARTS ARE LOCATED ON CHILLER BODY. 3. FROM/TO CONTROL PANEL. AI3 G MP VP 301 302 303 230 231 232 233 106 107 AI3 G 301 302 303 230 231 232 233 CTRL. PANEL POWER 106 107 AI3 G 301 302 303 230 231 232 233 E MOTOR&POWER ABNORMAL SGL. CURRENT TRANSDUCER SGL. KM1 KM2 KM3 CONTACTOR SIGNAL COOLING FANS SIGAL TO CONTROL PANEL FROM CONTROL PANEL S L FAN 18 LS Airooled Screw Chillers
Typical Schematic Diagram-1 Compressor POWER 1PH 220VAC 50/60HZ MCCB 10A 0 0 340 HQ KM2 FAN V0 N.F. 1 2 3 F.G 4 V1 V2 E E E V3 1 1 401 402 403 404 CH 405 406 101 102 KM2 XC PU SW RS 103 CONTROL PNL R02 106 107 106 107 MP VP AI3 G AI3 G AI3 G FS PU SW RS HP OL MP VP EKD 110 111 LP OP - + G 0 24 RS-485 TP04 DVPPS02 24V 0V 24V RS-485 0V 100 101 102 103 104 105 106 107 S/S X0 X1 X2 X3 DVP-12SA OUT IN X4 X5 X6 X7 120 S/S X0 X1 X2 X3 X4 X5 X6 X7 IN DVP-16SP OUT DVP-08SN OUT N G + G C0 Y0 C1 200 Y1 C2 Y2 Y3 201 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 220 221 222 223 224 225 226 227 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 230 231 232 233 E E 1 1 F1/5A 2 CH XC KM1 KM2 KM3 EC PY SV1 SV3 SV2 TE01 TE02 TE05 EP + CP IT + 8 7 1A 1B 1C 2A 2B 2C 5A 5B 5C AI1 AI2 AI3 G 24V 0V L+ L- I- FG L+ L- I- FG. 24V 0V L+ L- I- FG L+ L- I- FG. 24V 0V V+ I+ V+ I+ V+ I+ CH1 CH2 DVP-04PT CH3 CH4 CH1 CH2 DVP-04PT CH3 CH4 CH1 CH2 CH3 DVP-06XA CH4 CH5 CH6 G L+ L- I- FG L+ L- I- FG. 3A 3B 3C 4A 4B 4C G L+ L- I- FG L+ L- I- FG. G V+ I+ V+ I+ V+ I+ AO1 A 1 1 TR AC220/24V 20VA 3 3 F2/1A R33 TE03 TE04 TO ELEC.EXP.VALVE (ETS) 501 502 503 504 1 2 5 6 7 8 24VAC EKD ETS + 20 21 22 24 25 26 410 A AO1 120 CH TO EKD FROM PLC TO PLC KM1 KM2 KM3 301 302 303 230 231 232 233 301 302 303 230 231 232 233 301 302 303 230 231 232 233 CONTACTOR SIGNAL COOLING FANS RUN/STOP 1. 2. 3. 4. ELECTRICAL PART LIST 1 FS FLOW SWITCH 2 PU CHW PUMP INTERLOCK SGL FROM USER 3 SW REMOTE START/STOP SIGNAL FROM USER 4 RS REMOTE RESET SIGNAL FROM USER 5 VP POWER PROTECT RELAY 6 MP MOTOR PROTECT RELAY 7 HP HIGH PERSSURE SWITCH 8 LP LOW PRESSURE SWITCH 9 OL OIL LEVEL SWITCH 10 OP OIL DIFF. PRESSURE SWITCH 11 TE01 ECHW TEMPERATURE SENSOR PT100 12 TE02 LCHW TEMPERATURE SENSOR PT100 13 TE03 FIN TEMPERATURE SENSOR PT100 14 TE04 SUCTION TEMPREATURE SENSOR PT100 15 TE05 EXHAUST TEMPREATURE SENSOR PT100 16 EP EVAP PRESSURE TRANSMITTER 17 CP COND PRESSURE TRANSMITTER 18 IT CURRENT TRANSDUCER SIGNAL 19 KM1-3 AUX.RELAY (CONTACTOR) 20 CH AUX.RELAY (CHW PUMP) 21 XC AUX.RELAY (FAULT) 22 PY SPRAY LIQUID SOLENOID VALVE 23 ETS ELECTRONIC EXPANSION VALVE 24 SV1 SOLENOID VALVE 25% 25 SV2 SOLENOID VALVE 75% 26 SV3 SOLENOID VALVE 50% 27 HQ OIL HEATER 28 FAN COOLING FANS 29 MCCB MOLDED CASE CIRCUIT BREAKER 30 N.F. NOISE FILTER 31 F1-2 FUSE 32 V0-3 VARISTER 33 TR TRANSFORMER 34 EKD DRIVER MODULE -ETS 35 EC ECONOMIZER SOLENOID VALVE 36 PB EMERGERNCY STOP SWITCH L - E - E E - - E FOR CHW PUMP INTERLOCK FOR REMOTE START/STOP SGL FOR REMOTE RESTART SGL FOR CHW PUMP START/STOP SGL FOR PRESSOR RUN/STOP INDICATION FOR FAULT INDICATION BODY WIRING R02 STARTER PNL R02 EMERGERNCY STOP SGL PB CTRL. PANEL POWER MOTOR&POWER CURRENT ABNORMAL SGL TRANSDUCER SGL TO USER'S MCC FROM USER'S MCC FROM STARTER PANEL FANS RUN SGL TO STARTER PANEL NOTE SUPPLIED BY USERS LOCATED ON CHILLER BODY FROM/TO STARTER PANEL FROM/TO USER'S MCC LS Airooled Screw Chillers 19
Typical Starter Diagram-2 Compressor MAIN POWER SUPPLY 3PH 380VAC 50/60HZ AR0 AS0 AT0 STARTER PNL BODY WIRING R02 AI5 AIG MP VP R02 106 107 AI5 AIG 301 302 303 230 231 232 301 302 303 230 231 232 233 233 MAIN POWER SUPPLY 3PH 380VAC 50/60HZ BR0 BS0 BT0 STARTER PNL 123 BODY WIRING MP VP 124 AI6 AI6 AIG AIG 304 305 306 244 245 246 304 305 306 244 245 246 247 247 CONTROL PNL R02 EMERGERNCY STOP SGL. CTRL. PANEL POWER 106 107 AI5 AIG 301 302 303 230 231 232 233 E MOTOR&POWER ABNORMAL SGL CURRENT TRANSDUCER SGL. KM1 KM2 KM3 CONTACTOR SIGNAL COOLING FANS SIGAL 123 124 AI6 AIG 304 305 306 244 245 246 247 E CONTROL PNL KM1 KM2 KM3 MOTOR&POWER CURRENT ABNORMAL SGL TRANSDUCER SGL. CONTACTOR SIGNAL COOLING FANS SIGAL NFB1 600V AR1 AS1 AT1 TO CONTROL PANEL FROM CONTROL PANEL NFB1 600V BR1 BS1 BT1 TO CONTROL PANEL FROM CONTROL PANEL 1 2 3 4 5 6 AU1 FM1 51F1 AV1 AW1 AU2 FM2 51F2 AV2 AW2 AU3 FM3 51F3 AV3 AW3 AU4 FM4 51F4 AV4 AW4 AU5 FM5 51F5 AV5 AW5 AU6 FM6 51F6 AV6 AW6 BU1 BV1 BW1 1 51F1 BU2 BV2 BW2 2 51F2 BU3 BV3 BW3 3 51F3 BU4 BV4 BW4 4 51F4 BU5 BV5 BW5 5 51F5 BU6 BV6 BW6 6 51F6 CT VP L1 L2 L3 11 12 14 NFB2 10A R01 T01 TR 380V 220V R02 PB KM1 KM2 KM3 301 302 303 2M 158 161 1M 2M S KM1 KM2 KM3 304 305 306 2M 168 171 1M 2M S 1M AU AX MP 1M AU L1 M1 AV L2 M2 106 BU BV BW AW L3 N AV AW 2M P MP MOTOR B P BU L1 M1 MOTOR A S BV L2 M2 123 BX BY BZ BW L3 AY AZ N S L L S FAN IT AC1 5 1 2 AC2 3 2 AI5 6 107 4 TO CONTROL PANEL G 230 51F1 51F2 51F3 321 322 323 1 2 231 232 233 244 245 246 247 3 51F4 324 4 51F5 51F6 325 5 326 6 51F1 51F2 51F3 327 328 329 1 2 3 51F4 51F5 51F6 330 331 332 4 5 6 CT VP L1 L2 L3 FM1 11 12 14 FM2 124 FM3 IT BC1 5 1 2 BC2 3 2 AI6 6 4 G FM4 FM5 FM6 ELECTRICAL PART LIST 1 1M,2M,S MAGNETIC CONTACTOR 2 NFB1 MOLDED CASED CIRCUIT BREAKER 3 NFB2 NO FUSE BREAKER 4 TR TRANSFORMER 700VA 5 PB EMERGERNCY STOP SWITCH 6 MP MOTOR PROTECT RELAY 7 VP POWER PROTECTOR 8 IT AMPERE TRANSDUCER 9 CT CURRENT TRANSFORMER 10 1-6 MAGNETIC CONTACTOR 11 51F1-6 THERMAL RELAY 12 FM1-6 COOLING FAN 13 FAN COOLING FAN 14 KM1-3 AUX.RELAY CONTACT FROM CONTROL PNL 2M S Note 1. THESE PARTS ARE LOCATED IN CONTROL PANEL. 2. THESE PARTS ARE LOCATED ON CHILLER BODY. 3. FROM/TO CONTROL PANEL. 20 LS Airooled Screw Chillers
Typical Schematic Diagram-2 Compressor POWER 1PH 220VAC 50/60HZ MCCB 10A 0 0 340 HQ KM2 KM2 341 HQ FAN FAN FAN -1-2 -3 V0 N.F. F.G V1 V2 E E E V3 1 1 CONTROL PNL BODY WIRING STARTER PNL R02 R02 R02 EMERGERNCY STOP SGL PB CTRL. PANEL POWER 106 107 AI5 KM1 KM2 KM3 302 303 230 106 107 AI5 AIG 301 302 303 230 231 232 233 E 123 124 AI6 AIG 304 305 306 244 245 246 247 MP VP MP VP AI5 AIG 301 302 303 230 231 232 233 AI6 AIG 304 305 306 244 245 246 247 MOTOR&POWER CURRENT CONTACTOR SIGNAL COOLING FANS RUN/STOP MOTOR&POWER CURRENT CONTACTOR SIGNAL COOLING FANS RUN/STOP ABNORMAL SGL TRANSDUCER SGL ABNORMAL SGL TRANSDUCER SGL FROM STARTER PANEL AIG 301 231 232 TO STARTER PANEL KM1 KM2 KM3 233 123 124 AI6 AIG 304 305 306 244 245 246 247 FROM STARTER PANEL TO STARTER PANEL - + G 0 24 RS-485 TP04 DVPPS02 24V 0V 24V RS-485 0V FS PU SW RS HP 110 111 100 101 102 103 104 105 106 107 S/S X0 X1 X2 X3 DVP-12SA OUT IN OL LP OP X4 X5 X6 X7 MP VP EKD HP 120 112 113 LP 121 OL OP MP VP 122 123 124 S/S X0 X1 X2 X3 X4 X5 X6 X7 IN DVP-16SP OUT EKD 125 DVP-08SN OUT DVP-08SN OUT ELECTRICAL PART LIST 1 FS FLOW SWITCH 2 PU CHW PUMP INTERLOCK SGL FROM USER 3 SW REMOTE START/STOP SIGNAL FROM USER 4 RS REMOTE RESET SIGNAL FROM USER 5 VP POWER PROTECT RELAY 6 MP MOTOR PROTECT RELAY 7 HP HIGH PERSSURE SWITCH 8 LP LOW PRESSURE SWITCH N G + G C0 Y0 C1 Y1 C2 Y2 Y3 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 9 OL OIL LEVEL SWITCH 200 201 220 221 222 223 224 225 226 227 230 231 232 233 234 235 236 237 240 241 242 243 244 245 246 247 10 OP OIL DIFF. PRESSURE SWITCH E E 11 TE01 ECHW TEMPERATURE SENSOR PT100 12 TE02 LCHW TEMPERATURE SENSOR PT100 1 1 F1/5A 2 CH XC KM1 KM2 KM3 EC PY SV1 SV3 SV2 FANS RUN SGL KM1 KM2 KM3 EC PY SV1 SV3 SV2 FANS RUN SGL 13 TE03 FIN TEMPERATURE SENSOR A PT100 14 TE04 SUCTION TEMPREATURE SENSOR A PT100 15 TE05 EXHAUST TEMPREATURE SENSOR A PT100 16 TE06 FIN TEMPERATURE SENSOR B PT100 17 TE07 SUCTION TEMPREATURE SENSOR B PT100 18 TE08 EXHAUST TEMPREATURE SENSOR B PT100 TE01 TE02 TE05 TE06 EP - + CP - + IT IT 19 EP EVAP PRESSURE TRANSMITTER 20 CP COND PRESSURE TRANSMITTER 1 1 24V 1A 1B 1C 2A 2B 2C 0V L+ L- I- FG L+ L- I- FG. 24V CH1 CH2 DVP-04PT CH3 CH4 G L+ L- I- FG L+ L- I- FG. TR AC220/24V 20VA 3A 3B 3C 4A 4B 4C 0V 5A 5B 5C G L+ L- I- FG L+ L- I- FG. 6A 6B L+ L- I- FG L+ L- I- FG. CH1 CH2 DVP-04PT CH3 CH4 7A 7B 7C 8A 8B 8C TE03 TE04 TE07 TE08 3 3 F2/2A R33 TO ELEC.EXP.VALVE (ETS) TO ELEC.EXP.VALVE (ETS) 501 502 503 504 505 506 507 508 1 2 5 6 7 8 1 2 5 6 7 8 24VAC EKD ETS 24VAC EKD ETS + + 20 21 22 24 25 26 20 21 22 24 25 26 410 A AO1 120 411 A AO2 125 CH CH 6C 24V G 0V AI1 AI2 V+ I+ FG V+ I+ FG. CH1 CH2 DVP-04AD CH3 CH4 V+ I+ FG V+ I+ FG AI3 AI4 + ĒP + - CP 401 402 403 404 CH KM2 KM2 24V 405 406 407 408 0V V+ I+ AI5 AIG G V+ I+ XC V+ I+ AI6 AIG CH1 CH2 CH3 DVP-06XA CH4 CH5 CH6 PU 101 102 AO1 A TO EXD V+ I+ V+ I+ V+ I+ SW RS 103 AO2 A TO EXD 1. 21 IT CURRENT TRANSDUCER SIGNAL 22 KM1-3 AUX.RELAY (CONTACTOR) 23 CH AUX.RELAY (CHW PUMP) 24 XC AUX.RELAY (FAULT) 25 PY SPRAY LIQUID SOLENOID VALVE 26 ETS ELECTRONIC EXPANSION VALVE 27 SV1 SOLENOID VALVE 25% 28 SV2 SOLENOID VALVE 75% 29 SV3 SOLENOID VALVE 50% 30 HQ OIL HEATER 31 FAN COOLING FANS 32 MCCB MOLDED CASE CIRCUIT BREAKER 33 N.F. NOISE FILTER 34 F1-2 FUSE 35 V0-3 VARISTER 36 TR TRANSFORMER 37 EKD DRIVER MODULE -ETS 38 EC ECONOMIZER SOLENOID VALVE 39 PB EMERGERNCY STOP SWITCH TO USER'S MCC FROM USER'S MCC FROM PLC TO PLC FROM PLC TO PLC E L - - E - 1 2 3 4 E. E 8 7 8 7 E FOR CHW PUMP INTERLOCK FOR REMOTE START/STOP SGL FOR REMOTE RESTART SGL FOR CHW PUMP START/STOP SGL FOR PRESSOR A RUN/STOP INDICATION FOR PRESSOR B RUN/STOP INDICATION FOR FAULT INDICATION 4. 2. 3. NOTE SUPPLIED BY USERS LOCATED ON CHILLER BODY FROM/TO STARTER PANEL FROM/TO USER'S MCC LS Airooled Screw Chillers 21
Typical Starter Diagram-3 Compressor MAIN POWER SUPPLY 3PH 380VAC 50/60HZ AR0 AS0 AT0 STARTER PNL BODY WIRING R02 AI7 AIG MP VP R02 122 123 AI7 AIG 301 302 303 230 231 232 301 302 303 230 231 232 233 233 MAIN POWER SUPPLY 3PH 380VAC 50/60HZ BR0 BS0 BT0 STARTER PNL BODY WIRING 127 MP VP 130 AI8 AI8 AIG AIG 304 305 306 244 245 246 304 305 306 244 245 246 247 247 3PH 380VAC 50/60HZ STARTER PNL MAIN POWER SUPPLY BR0 BS0 BT0 BODY WIRING 134 MP VP 135 AI9 AI9 AIG3 AIG3 307 307 308 309 308 309 260 260 261 262 263 261 262 263 NFB1 CONTROL PNL R02 EMERGERNCY STOP SGL. CTRL. PANEL POWER 122 123 AI7 AIG 301 302 303 230 231 232 233 E MOTOR&POWER CURRENT ABNORMAL SGL TRANSDUCER SGL. TO CONTROL PANEL KM1 KM2 KM3 CONTACTOR SIGNAL COOLING FANS SIGAL AI8 AIG 304 305 306 244 245 246 247 127 130 E CONTROL PNL KM2 KM1 KM3 MOTOR&POWER CURRENT ABNORMAL SGL TRANSDUCER SGL. CONTACTOR SIGNAL COOLING FANS SIGAL AI9 AIG3 308 309 260 307 261 262 263 134 135 E CONTROL PNL KM2 KM1 KM3 MOTOR&POWER CURRENT ACNORMAL SGL TRANSDUCER SGL. CONTACTOR SIGNAL COOLING FANS SIGAL FROM CONTROL PANEL NFB1 NFB1 TO CONTROL PANEL FROM CONTROL PANEL TO CONTROL PANEL FROM CONTROL PANEL AR1 AS1 AT1 BR1 BS1 BT1 CR1 CS1 CT1 1 2 3 4 5 6 7 8 AU1 FM1 51F1 AV1 AW1 AU2 FM2 51F2 AV2 AW2 AU3 FM3 51F3 AV3 AW3 AU4 FM4 51F4 AV4 AW4 AU5 FM5 51F5 AV5 AW5 AU6 FM6 51F6 AV6 AW6 AU7 FM7 51F7 AV7 AW7 AU8 AV8 FM8 51F8 AW8 BU1 1 51F1 BV1 BW1 BU2 2 51F2 BV2 BW2 BU3 3 51F3 BV3 BW3 BU4 4 51F4 BV4 BW4 BU5 5 51F5 BV5 BW5 BU6 6 51F6 BV6 BW6 CU1 CV1 CW1 1 51F1 CU2 CV2 CW2 2 51F2 CU3 CV3 CW3 3 51F3 CU4 CV4 CW4 4 51F4 CU5 CV5 CW5 5 51F5 CU6 CV6 CW6 6 51F6 NFB2 10A R01 T01 TR 380V 220V R02 PB FM1 FM2 FM3 FM4 FM5 FM6 FM1 FM2 FM3 FM4 FM5 FM6 AU AX CT VP L1 L2 L3 IT AC1 11 12 14 KM1 KM2 KM3 301 302 303 2M 158 161 1M 2M S KM1 KM2 KM3 304 305 306 2M 168 171 1M MP MP 1M AU L1 M1 BU L1 M1 1M AV L2 M2 122 BV L2 M2 127 BU BV BW AW L3 BW L3 AV AW 2M N N P MOTOR P MP B MOTOR A S CU L1 M1 BX BY BZ CV L2 M2 134 AY AZ CW L3 2M S S L S L FAN AC2 TO CONTROL PANEL 123 230 51F1 51F2 51F3 322 323 321 1 2 AI7 AIG 231 232 233 244 245 246 247 3 51F4 324 4 51F5 51F6 51F7 326 327 325 5 6 7 51F8 328 8 51F1 51F2 51F3 330 331 329 1 2 3 51F4 4 51F5 51F6 332 333 334 5 307 308 309 178 2M 6 KM1 KM2 KM3 1M 1 181 2M 51F1 51F2 51F3 335 336 337 S 260 261 262 263 2 N 3 51F4 4 51F5 51F6 338 339 340 5 6 CT Note VP L1 L2 L3 IT BC1 BC2 11 12 14 2M 130 S AI8 AIG CT 1M CU CX CV P MOTOR CY C CW CZ IT CC1 CC2 VP L1 L2 L3 11 12 14 2M 135 AI9 AIG S ELECTRICAL PART LIST 1 1M,2M,S MAGNETIC CONTACTOR 2 NFB1 MOLDED CASED CIRCUIT BREAKER 3 NFB2 NO FUSE BREAKER 4 TR TRANSFORMER 1000VA 5 PB EMERGERNCY STOP SWITCH 6 MP MOTOR PROTECT RELAY 7 VP POWER PROTECTOR 8 IT AMPERE TRANSDUCER 9 CT CURRENT TRANSFORMER 10 1-8 MAGNETIC CONTACTOR 11 51F1-8 THERMAL RELAY 12 FM1-8 COOLING FAN 13 FAN COOLING FAN 14 KM1-3 AUX.RELAY CONTACT FROM CONTROL PNL 1. THESE PARTS ARE LOCATED IN CONTROL PANEL. 2. THESE PARTS ARE LOCATED ON CHILLER BODY. 3. FROM/TO CONTROL PANEL. 5 6 1 3 2 4 1 3 2 4 S L 5 6 5 6 1 3 2 4 22 LS Airooled Screw Chillers
Typical Schematic Diagram-3 Compressor POWER 1PH 220VAC 50/60HZ MCCB 10A V0 N.F. V1 V2 V3 0 1 0 F.G 1 KM2 KM2 KM2 401 340 341 342 E E E HQ HQ HQ FAN FAN FAN -1-2 -3 CH KM2 KM2 PU 101 102 SW RS 103 FS PU SW RS HP OL VP MP EKD HP OL MP VP EKD 110 111 LP OP 112 113 LP OP - + G 0 24 RS-485 TP04 DVPPS02 24V 0V AI1 AI2 101 102 100 103 121 122 120 123 S/S X0 X1 X2 X3 X4 X5 X6 X7 IN DVP-16SP OUT 124 125 126 127 130 131 DVP-08SN OUT 200 201 220 221 222 223 224 225 226 227 230 231 232 233 234 235 236 237 240 241 242 243 244 245 246 247 E E 1 1 F1/5A 2 CH XC KM1 KM2 KM3 EC PY SV1 SV3 SV2 FANS RUN SGL KM1 KM2 KM3 EC PY SV1 SV3 SV2 FANS RUN SGL TE01 TE02 TE05 TE06 EP - CP - IT 1A 1B 1C 2A 2B 2C 5A 5B 5C 6A 6B 6C AI3 AI4 AI9 AIG 24V 0V L+ L- FG L+ L- FG. 24V 0V L+ L- FG L+ L- FG. 24V 0V V+ I+ FG V+ I+ FG. 24V 0V V+ I+ V+ I+ V+ I+ G. L+ L- I- FG L+ L- I- FG G. L+ L- I- FG L+ L- I- FG V+ I+ FG V+ I+ FG G V+ I+ V+ I+ V+ I+ 3A 3B 3C 4A 4B 4C 7A 7B 7C 8A 8B 8C 11A 11B 11C AI5 AI6 AO2 A AO3 A TE03 TE04 TE07 TE08 + ĒP - + CP TO EXD TO EXD 1 TR AC220/24V 3 F2/2A R33 1 3 30VA TO ELEC.EXP.VALVE (ETS) TO ELEC.EXP.VALVE (ETS) TO ELEC.EXP.VALVE (ETS) 501 502 503 504 505 506 507 508 1 2 5 6 7 8 1 2 5 6 7 8 24VAC ETS 24VAC EKD EKD ETS - 20 21 22 24 25 26 20 21 22 24 25 26 410 A AO1 124 411 A AO2 131 CH CH FROM PLC TO PLC FROM PLC TO PLC FROM PLC TO PLC R02 PB 122 123 AI7 AIG 301 KM1 KM2 KM3 302 303 230 231 232 KM1 KM2 KM3 233 127 130 AI8 AIG 304 305 306 244 245 246 247 R02 R02 CTRL. PANEL POWER AI7 AIG 302 303 230 231 232 233 122 123 E 127 130 AI8 AIG 304 301 305 306 MP VP AI7 AIG 301 302 303 230 231 232 233 CONTACTOR SIGNAL COOLING FANS RUN/STOP MP VP AI8 AIG 304 305 306 244 245 246 244 245 246 247 247 CONTACTOR SIGNAL COOLING FANS RUN/STOP E L N I- G I- - + E I- 1 2 3 4 I- + E G E + +. E 8 7 FOR CHW PUMP INTERLOCK FOR REMOTE START/STOP SGL FOR REMOTE RESTART SGL FOR CHW PUMP START/STOP SGL FOR PRESSOR A RUN/STOP INDICATION FOR PRESSOR B RUN/STOP INDICATION XC TO USER'S MCC FROM USER'S MCC HP OL MP VP EKD EP - CP - 114 115 LP OP 24V RS-485 0V V0+ I0+ V1+ I1+ A/D DVP-10SX D/A S/S X0 X1 X2 X3 IN OUT 132 133 S/S X0 X1 X2 X3 X4 X5 X6 X7 IN DVP-16SP OUT 134 135 136 DVP-08SN OUT DVP-08SN OUT V0+ I0+ V1+ I1+ C0 Y0 Y1 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 C0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 AO1 A 250 251 252 253 254 255 256 257 260 261 262 263 TO EXD KM1 KM2 KM3 EC PY SV1 SV3 SV2 FANS RUN SGL TE09 TE10 IT IT 9A 9B 9C 10A 10B 10C AI7 AIG AI8 AIG 24V 0V L+ L- FG L+ L- FG. CH1 CH2 CH1 CH2 CH1 CH2 CH1 CH2 CH1 CH2 CH3 DVP-04PT DVP-04PT DVP-04PT DVP-04AD DVP-06XA CH5 CH3 CH4 CH3 CH4 CH3 CH4 CH3 CH4 CH4 CH6 G. L+ L- I- FG L+ L- I- FG TE11 509 510 511 512 1 2 5 6 7 8 24VAC ETS EKD CH 20 412 21 22 24 25 26 A AO3 136 CONTROL PNL BODY WIRING STARTER PNL EMERGERNCY STOP SGL MOTOR&POWER ABNORMAL SGL FROM STARTER PANEL CURRENT TRANSDUCER SGL TO STARTER PANEL MOTOR&POWER ABNORMAL SGL CURRENT TRANSDUCER SGL FROM STARTER PANEL TO STARTER PANEL + - G + +. E I- - + I- 8 7 8 7 FOR PRESSOR C RUN/STOP INDICATION FOR FAULT INDICATION 402 403 404 405 406 407 408 409 410 KM2 134 135 AI9 AIG 307 KM1 KM2 KM3 308 309 260. 261 262 263 134 135 MP VP MOTOR&POWER ABNORMAL SGL AI9 AIG AI9 AIG CURRENT TRANSDUCER SGL FROM STARTER PANEL 307 307 308 309 308 309 260 261 262 260 261 262 263 263 CONTACTOR SIGNAL COOLING FANS RUN/STOP TO STARTER PANEL ELECTRICAL PART LIST 1 FS FLOW SWITCH 2 PU CHW PUMP INTERLOCK SGL FROM USER 3 SW REMOTE START/STOP SIGNAL FROM USER 4 RS REMOTE RESET SIGNAL FROM USER 5 VP POWER PROTECT RELAY 6 MP MOTOR PROTECT RELAY 7 HP HIGH PERSSURE SWITCH 8 LP LOW PRESSURE SWITCH 9 OL OIL LEVEL SWITCH 10 OP OIL DIFF. PRESSURE SWITCH 11 TE01 ECHW TEMPERATURE SENSOR PT100 12 TE02 LCHW TEMPERATURE SENSOR PT100 13 TE03 FIN TEMPERATURE SENSOR A PT100 14 TE04 SUCTION TEMPREATURE SENSOR A PT100 15 TE05 EXHAUST TEMPREATURE SENSOR A PT100 16 TE06 FIN TEMPERATURE SENSOR B PT100 17 TE07 SUCTION TEMPREATURE SENSOR B PT100 18 TE08 EXHAUST TEMPREATURE SENSOR B PT100 19 TE09 FIN TEMPERATURE SENSOR C PT100 20 TE10 SUCTION TEMPREATURE SENSOR C PT100 21 TE11 EXHAUST TEMPREATURE SENSOR C PT100 22 EP EVAP PRESSURE TRANSMITTER 23 CP COND PRESSURE TRANSMITTER 24 IT CURRENT TRANSDUCER SIGNAL 25 KM1-3 AUX.RELAY (CONTACTOR) 26 CH AUX.RELAY (CHW PUMP) 27 XC AUX.RELAY (FAULT) 28 PY SPRAY LIQUID SOLENOID VALVE 29 ETS ELECTRONIC EXPANSIONV ALVE 30 SV1 SOLENOID VALVE 25% 31 SV2 SOLENOID VALVE 75% 32 SV3 SOLENOID VALVE 50% 33 HQ OIL HEATER 34 FAN COOLING FANS 35 MCCB MOLDED CASE CIRCUIT BREAKER 36 N.F. NOISE FILTER 37 F1-2 FUSE 38 V0-3 VARISTER 39 TR TRANSFORMER 40 EKD DRIVER MODULE -ETS 41 EC ECONOMIZER SOLENOID VALVE 42 PB EMERGERNCY STOP SWITCH NOTE SUPPLIED BY USERS 1. LOCATED ON CHILLER BODY FROM/TO STARTER PANEL FROM/TO USER'S MCC 2. 3. 4. E LS Airooled Screw Chillers 23
Interface Connection Diagram Connection between starter panel and motor, connection between control panel and starter, connection between starter panel and electrical actuator, connection between control panel and pressure/temperature transducer have been done in the factory. The dotted line box should be supplied by user. 1 Compressor LS'S WORKING SCOPE CHILLER CONTROL PANEL 101 USER'S WORK SCOPE USER'S AUX.EQUIP.CONTROL PANEL PU NOTE 3) NOTE 1) START/STOP SIGNAL FOR CHILLED WATER PUMP 401 402 NOTE 2) FOR PRESSOR RUN/STOP INDICATION 403 404 FOR FLAUT INDICATION 407 408 REMOTE RUN/STOP SINGLE REMOTE RESET SINGLE 102 103 SW RS NOTE 4) TERMINAL 2 Compressor LS'S WORKING SCOPE CHILLER CONTROL PANEL USER'S WORK SCOPE USER'S AUX.EQUIP.CONTROL PANEL 101 PU NOTE 3) NOTE 1) START/STOP SIGNAL FOR CHILLED WATER PUMP 401 402 NOTE 2) FOR PRESSOR RUN/STOP INDICATION FOR PRESSOR RUN/STOP INDICATION FOR FLAUT INDICATION 403 404 405 406 407 408 REMOTE RUN/STOP SINGLE REMOTE RESET SINGLE 102 103 SW RS NOTE 4) TERMINAL 3 Compressor LS'S WORKING SCOPE CHILLER CONTROL PANEL NOTE 1) NOTE 2) START/STOP SIGNAL FOR CHILLED WATER PUMP FOR PRESSOR RUN/STOP INDICATION FOR PRESSOR RUN/STOP INDICATION FOR PRESSOR RUN/STOP INDICATION FOR FLAUT INDICATION REMOTE RUN/STOP SINGLE REMOTE RESET SINGLE TERMINAL 101 401 402 403 404 405 406 407 408 410 411 102 103 USER'S WORK SCOPE USER'S AUX.EQUIP.CONTROL PANEL PU NOTE 3) SW NOTE 4) RS Note: 1. For start/stop peripheral equipment - Contact description: below 250vac,0.1a 2. Indication of chiller operation - Contact description: below 250vac,0.1a 3. Interlock contacts, supplied by user - Contact description: no-voltage contact (dry contact) - Allowable contact resistance: max. 100ohm 4. Remote running/restart conta ct, supplied by user - Contact description: no-votage contact (dry contact) - Allowable contact resistance: max. 100ohm 5. Symbol definition 52C : Interlock of chilled water pump SW : Remote run/stop switch RS : Remote restart switch 24 LS Airooled Screw Chillers