WXC R134a Nominal Cooling Capacity from 224 to 692kW FEATURES AND BENEFITS Range of 12 models. Higher capacity and higher EER from the same compressor. High EER, low sound power level and high reliability. Superior part load performance. Cleanable Condenser abd Cooler. Lower waterside pressure drop..
TABLE OF CONTENTS Page No. Identification Unit Features 3 Physical Specifications 4-5 Extended Performance Data 6-7 Dimensional Data 8-9 Typical Wiring 0-11 Unit Pressure Drops -13 IDENTIFICATION W X C 125 T - 5 S R Water Cooled Screw Compressor Chiller Nominal Tons 60, 85, 95, 115, 125, 160, 175 Two Compressors 95, 125, 145, 170, 195 Blank - One Compressor T - Two Compressors 5-50Hz S - Standard Q - Special R = R134a
UNIT FREATURES Vision2020i a flexible and advance programmable electronic controller designed specifically for the applications and precise control of Dunham-Bush Rotary Screw compressor chillers. The controller board is provided with a set of terminals that connected to various devices such as temperature sensors, pressure and current transducers, solenoid valves, compressors and fans contactors, control relays and etc. Three sizes of controller boards are provided to handle different number of input and output requirements: DB3-S small board, DB3-M medium board and DB3-L large board. The unit algorithm program and operating parameters are stored in FLASH-MEMORY that does not require a back-up battery. The program can be loaded through PC or programming key. Vision2020i controller is equipped with a user friendly terminal with a semi-graphic display and dedicated keys that provides easy access to the unit operating conditions, control set points and alarm history. Each unit s controller can be configured and connected to the local DBLAN network that allows multiple units sequencing control without additional hardware. The DBLAN is local area network made up of several chillers controller. Display and User Terminal Vision2020i controller is design to work with a user friendly back-lit 132 by 64 pixels DBG1 Semi-Graphic Display panel connected with controller through telephone cable. The user terminal allows displaying the unit working conditions, compressor run times, alarm history and modifying the parameters. The display also has an automatically self-test of the controller on system start-up. Multiple messages will be displayed by automatically scrolling from each message to the next. All of these messages are spelled out in English language on the display terminal. There are 15 dedicated buttons enable user to access information, base on the security level of the password. For more detail operation of the DBG1 Display Terminal, please refer to the Unit Operation Manual. Easily accessible measurements include: Leaving chilled water temperature Leaving chiller water temperature derivative Evaporator Pressure Condenser Pressure Compressor amp draw of each compressor Compressor elapsed run time of each compressor Compressor starts status Oil level sensor status Water temperature reset value Water flow switch status External start/stop command status Optional entering chilled water temperature, leaving and entering condenser water temperature are available. With this option the operator can quickly and accurately read all significant water temperatures and eliminate the need for often-inaccurate thermometers. Voltage readout is also offered as an optional feature. 3
PHYSICAL SPECIFICATION MODEL WXC 60-5SR 85-5SR 95-5SR 115-5SR 125-5SR 160-5SR NOMINAL CAPACITY (kw) 224 300 345 408 437 577 MIN % UNIT CAPACITY REDUCTION 25% 25% 25% 25% 25% 25% EER 5.33 5.45 5.39 5.37 5.26 5.29 COMPRESSOR MODEL (QTY) HSC1512 (1) HSC1709 (1) HSC1711 (1) HSC1811 (1) HSC1813 (1) HSC1816 (1) rev/min 2900 2900 2900 2900 2900 2900 ELECTRICAL INFORMATION COMPR. RLA, EACH 65 90 104 123 138 179 UNIT LRA, EACH 500 560 685 745 910 1160 MIN CIRCUIT AMPS MAX. ALLOW. FUSE SIZE 81 113 130 154 173 224 150 200 250 250 300 400 EVAPORATOR MODEL B1R C1R D1R D2R J1R L1R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) 5 6 6 6 6 8 9.59 12.93 14.7 17.47 19.24 23.91 22.68 25.36 19.4 21.49 13.43 11.64 CONDENSER MODEL A1R A2R A3R B1R H1R H4R WATER CONNECTION Victolic (INCH) 4 4 4 5 5 6 NOMINAL WATER FLOW (l/s) 11.42 15.33 17.47 20.76 22.9 28.39 NOMINAL PRESSURE DROP (kpa) 20.89 26.86 24.47 22.68 15.82 14.03 GENERAL INFORMATION UNIT LENGTH (mm) 3150 3032 3032 3150 4232 4248 UNIT WIDTH (mm) 1054 1080 1130 1165 1216 1375 UNIT HEIGHT (mm) 1930 2057 2083 2108 2064 2248 SHIPPING WEIGHT (kg) 1632 2009 2272 2403 3194 4073 OPERATING WEIGHT (kg) 1777 2178 2472 2611 3478 4432 APPROX. R134a REF. CHARGE (kg) 95 120 142 171 185 238 Notes: 1.) Nominal capacity is based on standard condition, actual capacity depends on the specified operating conditions. 2.) Evaporator and condenser models are based on standard condition and are both 2 pass. Model might change for non-standard conditions or application. 4
PHYSICAL SPECIFICATION MODEL WXC 175-5SR 95T-5SR 125T-5SR 145T-5SR 170T-5SR 195T-5SR NOMINAL CAPACITY (kw) 617 344 449 524 601 692 MIN % UNIT CAPACITY REDUCTION 25% 12.50% 12.50% 12.50% 12.50% 12.50% EER 5.27 5.29 5.34 5.40 5.41 5.40 COMPRESSOR MODEL (QTY) HSC1817 (1) HSC1509 HSC1512 HSC 1512 HSC1709 HSC1711 (2) (2) HSC 1709 (2) (2) rev/min 2900 2900 2900 2900 2900 2900 ELECTRICAL INFORMATION COMPR. RLA, EACH 193 53 65 65, 90 90 104 UNIT LRA, EACH 1400 360 500 500, 560 560 685 MIN CIRCUIT AMPS MAX. ALLOW. FUSE SIZE 241 119 146 178 203 234 400 150 200 250 250 300 EVAPORATOR MODEL L1R D3R J1R K1R L1R L2R WATER CONNECTION Victolic (INCH) NOMINAL WATER FLOW (l/s) NOMINAL PRESSURE DROP (kpa) 8 6 6 6 8 8 26.11 14.7 19.24 22.52 25.8 29.65 13.43 22.98 30.14 32.83 29.84 30.14 CONDENSER MODEL H4R D1R H1R H2R H4R J1R WATER CONNECTION Victolic (INCH) 6 4 5 6 6 6 NOMINAL WATER FLOW (l/s) 30.91 17.47 22.84 26.69 30.6 35.14 NOMINAL PRESSURE DROP (kpa) 16.41 30.14 35.51 36.71 36.11 39.69 GENERAL INFORMATION UNIT LENGTH (mm) 4248 4175 4293 4353 4353 4353 UNIT WIDTH (mm) 1375 1232 1267 1362 1394 1445 UNIT HEIGHT (mm) 2248 2007 2032 2172 2197 2197 SHIPPING WEIGHT (kg) 4376 2769 3147 3512 3909 4745 OPERATING WEIGHT (kg) 4761 3020 3420 3811 4247 5158 APPROX. R134a REF. CHARGE (kg) 255 142 189 208 241 283 Notes: 1.) Nominal capacity based on chilled water 12 C in, 7 C out, condenser water 30 in, 35 C out. 2.) Nominal capacity is based on standard condition, actual capacity depends on the specified operating conditions.. 3.) Evaporator and condenser models are based on standard condition and are both 2 pass. Model might change for non-standard conditions or application. 5
EXTENDED PERFORMANCE DATA for WXC (R134a) MODEL WXC 60-5SR 85-5SR 95-5SR 115-5SR 125-5SR 160-5SR 175-5SR 95T-5SR 125T-5SR LEAVING CHILLED WATER TEMP., C ENTERING CONDENSER WATER TEMPERATURE, C 25 30 35 kwo kwi kwo Kwi kwo kwi 5.5 222 38 211 42 200 46 6.0 227 38 216 42 204 46 6.5 231 38 220 42 208 46 7.0 234 38 224 42 212 47 7.5 235 38 229 42 217 47 5.5 295 50 280 55 265 61 6.0 301 50 288 55 271 61 6.5 307 50 294 55 276 61 7.0 311 51 300 55 282 62 7.5 313 51 305 56 288 62 5.5 341 58 325 64 307 70 6.0 348 58 332 64 314 71 6.5 355 58 338 64 320 71 7.0 359 59 345 64 327 71 7.5 362 59 352 64 334 72 5.5 403 69 383 75 362 83 6.0 411 69 392 75 370 83 6.5 419 69 399 75 377 84 7.0 424 69 408 76 385 84 7.5 427 69 415 76 394 84 5.5 420 74 400 82 379 89 6.0 430 74 416 82 386 90 6.5 439 74 430 83 393 90 7.0 446 75 437 83 401 90 7.5 452 75 440 83 408 91 5.5 572 100 546 107 516 122 6.0 584 100 556 107 526 122 6.5 593 100 566 108 535 123 7.0 604 101 577 109 546 123 7.5 614 102 588 111 556 124 5.5 608 108 579 115 548 132 6.0 620 108 593 116 559 132 6.5 631 108 606 116 568 133 7.0 642 109 617 117 579 133 7.5 652 110 626 119 591 134 5.5 340 59 324 65 306 72 6.0 348 60 331 65 313 72 6.5 354 60 337 65 320 72 7.0 358 60 344 65 326 73 7.5 361 60 350 66 332 73 5.5 443 76 422 83 400 92 6.0 453 76 431 84 408 92 6.5 462 77 440 84 415 93 7.0 467 77 449 84 424 93 7.5 471 77 458 84 433 94.. 3. Ratings based on 5.56 C water range in evaporator and 0.18m 2 / C/kW fouling factor. Interpolation between ratings is permissible but extrapolation is NOT. kwi is for compressor input. 6
EXTENDED PERFORMANCE DATA for WXC (R134a) MODEL WXC 145T-5SR 170T-5SR 195T-5SR LEAVING CHILLED WATER TEMP., C ENTERING CONDENSER WATER TEMPERATURE, C 25 30 35 kwo kwi kwo kwi kwo kwi 5.5 516 88 491 97 465 107 6.0 528 88 503 97 475 107 6.5 538 89 514 97 484 108 7.0 544 89 524 97 494 108 7.5 548 89 533 98 504 109 5.5 590 100 560 110 530 121 6.0 603 101 575 110 542 122 6.5 614 101 588 110 552 122 7.0 622 101 601 111 564 123 7.5 626 101 611 111 576 124 5.5 683 116 650 127 614 140 6.0 697 117 665 128 628 141 6.5 710 117 678 128 641 142 7.0 719 117 692 128 655 142 7.5 724 117 705 128 668 143.. 3. Ratings based on 5.56 C water range in evaporator and 0.18m 2 / C/kW fouling factor. Interpolation between ratings is permissible but extrapolation is NOT. kwi is for compressor input. 7
DIMENSIONAL DATA - ONE COMPRESSOR 8
DIMENSIONAL DATA - TWO COMPRESSORS 9
TYPICAL WIRING SCHEMATIC - TWO COMPRESSORS 10
TYPICAL WIRING SCHEMATIC - TWO COMPRESSORS 11
UNIT PREESSURE DROPS Evaporator 2 Pass - One Compressor 100 PRESSURE DROP - kpa. WXC 60-5SR WXC 85-5SR WXC 95-5SR WXC 115-5SR WXC 125-5CR WXC 160-5SR WXC 175-5SR 10 1 10 100 WATER Water FLOW flow rate RATE - l/s - L/s Condenser 2 Pass - One Compressor 100 PRESSURE DROP - kpa. WXC 60-5SR WXC 85-5SR WXC 95-5SR WXC 115-5SR WXC 125-5CR WXC 160-5SR WXC 175-5SR 10 1 10 100 WATER Water FLOW flow rate RATE - l/s - L/s 12
UNIT PREESSURE DROPS Evaporator 2 Pass - Two Compressors 100 WXC 125T-5SR WXC 145T-5SR PRESSURE DROP - kpa. WXC 170T-5SR WXC 195T-5SR 10 1 10 100 WATER Water FLOW flow rate RATE - l/s - L/s Condenser 2 Pass - Two Compressors 100 WXC 95T-5SR WXC 125T-5SR PRESSURE DROP - kpa. WXC 145T-5SR WXC 170T-5SR WXC 195T-5SR 10 1 10 100 WATER Water FLOW flow rate RATE - l/s - L/s 13
Manufacturer reserves the right to change any product specification without notice Dunham-Bush Ltd Downley Road Havant Hants PO9 2JD Tel. 023 9247 7700 Fax. 023 9245 3601 Email: info@dunham-bush.co.uk www.dunham-bush.co.uk PDS-1000-C-0261-01 April 2009 14