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SOUND PRESSURE DATA 

 
 

Model 

WCFX-E

 

Octave Band (Hz) 

TOTAL

dB (A) 

63 125 250 500 1K 2K 4K 8K 

10S 

70 55 59 67 75 72 62 53  78 

12S 

71 56 60 68 76 73 63 54  79 

15S 

71 59 63 71 79 76 66 57  82 

19S 

68 57 63 68 75 72 72 54  79 

20S 

68 57 63 68 75 72 72 54  79 

20T 

72 57 61 69 77 74 64 55  80 

22T 

72 57 61 69 77 74 64 55  80 

23S 

68 57 63 68 75 72 72 54  79 

24S 

69 59 64 68 76 73 74 56  80 

24T 

73 58 62 70 78 75 65 56  81 

27S 

69 59 64 68 76 73 74 56  80 

27T 

73 59 63 71 79 76 66 57  82 

30S 

70 61 65 69 78 75 74 59  81 

30T 

73 61 65 73 81 78 68 59  84 

36S 

70 61 65 69 78 75 74 59  81 

38T 

71 60 66 71 78 75 75 57  82 

40T 

70 59 65 70 77 74 74 56  81 

41S 

70 61 65 69 78 75 74 59  81 

46T 

70 59 65 70 77 74 74 56  81 

 
 

Model

WCFX-E

Octave Band (Hz) 

TOTAL

dB (A) 

63 125 250 500 1K 2K 4K 8K 

50T 

71 60 66 70 78 75 75 57  82 

54T 

71 61 66 70 78 75 76 58  82 

57T 

71 62 66 70 79 76 76 60  83 

60T 

72 63 67 71 80 77 76 61  83 

69 

71 60 66 71 78 75 75 57  82 

73 

72 61 67 71 79 76 76 58  83 

73T 

72 63 67 71 80 77 76 61  83 

75T 

72 63 67 71 80 77 76 61  83 

77 

72 62 67 71 79 76 77 59  83 

81 

72 62 67 71 79 76 77 59  84 

81T 

72 63 67 71 80 77 76 61  83 

84 

73 63 68 72 80 77 77 61  84 

87 

73 64 68 72 81 78 77 62  85 

90 

73 64 68 72 81 78 77 62  85 

108 

73 64 68 72 81 78 77 62  84 

113 

73 64 68 72 81 78 77 62  84 

118 

73 64 68 72 81 78 77 62  84 

123 

73 64 68 72 81 78 77 62  84 

Note: Sound Pressure Level dB(A)  @ 3.3ft [1m] (free field) ± 2dBA.

 

 

ELECTRICAL DATA 

 

Model 

WCFX-E 

Unit Compressor 

Power Supply 

Max. Fuse 

Size 

Min. Circuit 

Ampacity 

Compressor Model 

RLA 

Inrush Amps 

LRA 

10S 

460VAC±10% 200 

100 

1210(1) 

78 

283 

425 

12S 

460VAC±10% 300 

100 

1212(1) 

104 

392 

588 

15S 

460VAC±10% 400 

200 

1215(1) 

129 

429 

644 

19S 

460VAC±10% 400 

200 

1220(1) 

126.0 

408.3 

612.4 

20S 

460VAC±10% 400 

200 

1222(1) 

154 

499 

749 

20T 

460VAC±10% 300 

200 

1210(2) 

78.0(2) 

283.0(2) 

424.5(2) 

22T 

460VAC±10% 

400 

200 

1210(1) / 1212(1) 

78.0 / 104.0 

283.0 / 392.0 

424.5 / 588.0 

23S 

460VAC±10% 400 

200 

1222(1) 

154 

499 

749 

24S 

460VAC±10% 600 

200 

1227(1) 

193 

615 

923 

24T 

460VAC±10% 400 

300 

1212(2) 

104.0(2) 

392.0(2) 

588.0(2) 

27S 

460VAC±10% 600 

200 

1227(1) 

193 

615 

923 

27T 

460VAC±10% 

500 

300 

1212(1) / 1215(1) 

104.0 / 129.0 

392.0 / 429.0 

588.0 / 643.5 

30S 

460VAC±10% 700 

300 

1230(1) 

224 

679 

1019 

30T 

460VAC±10% 500 

300 

1215(2) 

129.0(2) 

429.0(2) 

643.5(2) 

36S 

460VAC±10% 700 

300 

2233 

(1) 

259 

920 

1380 

38T 

460VAC±10% 500 

300 

1220(2) 

126.0(2) 

408.3(2) 

612.4(2) 

40T 

460VAC±10% 600 

400 

1222(2) 

154.0(2) 

499.0(2) 

748.5(2) 

41S 

460VAC±10% 900 

400 

2236 

(1) 

309 

1214 

1821 

46T 

460VAC±10% 600 

400 

1222(2) 

154(2) 

499(2) 

749(2) 

50T 

460VAC±10% 

800 

400 

1227(1) / 1222(1) 

193 / 154 

615 / 499 

923 / 749 

54T 

460VAC±10% 800 

500 

1227(2) 

193(2) 

615(2) 

923(2) 

57T 

460VAC±10% 

900 

500 

1230(1) / 1227(1) 

224 / 193 

679 / 615 

1019 / 923 

60T 

460VAC±10% 900 

600 

1230(2) 

224(2) 

679(2) 

1019(2) 

69 

460VAC±10% 800 

600 

1222(3) 

154(3) 

499(3) 

749(3) 

73 

460VAC±10% 

1000 

600 

1227(1) / 1222(2) 

193(1) / 154(2) 

615 / 499(2) 

923 / 749(2) 

73T 

460VAC±10% 1000 

600 

2233(2) 

259(2) 

920(2) 

1380(2) 

75T 

460VAC±10% 

1200 

700 

2236(1) / 2233(1) 

309 / 259 

1214 / 920 

1821 / 1380 

77 

460VAC±10% 

1000 

700 

1227(2) / 1222(1) 

193(2) / 154 

615(2) / 499 

923(2) / 749 

81 

460VAC±10% 1100 

700 

1227(3) 

193(3) 

615(3) 

923(3) 

81T 

460VAC±10% 1300 

800 

2236(2) 

309(2) 

1214(2) 

1821(2) 

84 

460VAC±10% 

1200 

800 

1230(1) / 1227(2) 

224 / 193(2) 

679 / 615(2) 

1019 / 923(2) 

87 

460VAC±10% 

1200 

800 

1230(2) / 1227(1) 

224(2) / 193 

679(2) / 615 

1019(2) / 923 

90 

460VAC±10% 1200 

900 

1230(3) 

224(3) 

679(3) 

1019(3) 

108 

460VAC±10% 1400 

1000 

2233(3) 

259(3) 

920(3) 

1380(3) 

113 

460VAC±10% 

1500 

1000 

2236(1) / 2233(2) 

309 / 259(2) 

1214 / 920(2) 

1821 / 1380(2) 

118 

460VAC±10% 

1600 

1100 

2236(2) / 2233(1) 

309(2) / 259 

1214(2) / 920 

1821(2) / 1380 

123 

460VAC±10% 1600 

1200 

2236(3) 

309(3) 

1214(3) 

1821(3) 

Note: RLA – Rated Load Amps 

LRA – Locked Rotor Amps 

Summary of Contents for WCFX-E Series

Page 1: ...Products that perform By people who care WCFX E Series 60Hz Water Cooled Rotary Screw Water Chillers Cooling Capacity 70 to 1000 TR 246 to 3517 kW R134a...

Page 2: ...atures 4 Operating Benefits 9 Typical Sequence of Operation 10 Physical Specifications 11 Dimensional Data 13 Floor Loading Diagram 19 Water Pressure Drop 20 Sound Pressure Data 26 Electrical Data 26...

Page 3: ...inimum downtime during rework of faulty or damaged compressor Dunham Bush can arrange to provide a substitute reworked compressors while the faulty compressor is being reworked or repaired D Vapor inj...

Page 4: ...exclusive electronically initiated hydraulically actuated control arrangement Positive Displacement Direct Connected The compressor is directly connected to the motor without any complicated gear sys...

Page 5: ...space is decreased and the gas pressure consequently increased Discharge Phase At a point determined by the designed built in compression ratio the discharge port is covered and the compressed gas is...

Page 6: ...hiller water temperature derivative D Evaporator Pressure D Condenser Pressure D Compressor amp draw of each compressor D Compressor elapsed run time of each compressor D Compressor starts status D Oi...

Page 7: ...em however is very similar to centrifugal water chillers and is shown in the refrigerant cycle diagram below Liquid refrigerant enters the flooded evaporator uniformly where it absorbs heat from water...

Page 8: ...g may be exposed to temperatures below freezing glycol protection is recommended if the water is not drained The recommended protection is 15 F below the minimum ambient temperature in the equipment r...

Page 9: ...D ASHRAE Standard 15 Safety Code for Mechanical Refrigeration D National Electric Code D IEEE D Optional PED Refrigerant Compatibility D Designed to operate with environmentally safe and economically...

Page 10: ...emperature is below the deadband the compressor is commanded to unload Thus the compressor capacity is continuously modulated to match applied load and hold leaving chilled water temperature at setpoi...

Page 11: ...kW 776 6 692 8 874 3 750 9 1028 4 951 3 1162 0 1168 3 1320 6 10 4 kcal h 66 8 59 6 75 2 64 6 88 4 81 8 99 9 100 5 113 6 Min Unit Capacity 25 12 5 25 12 5 25 12 5 12 5 25 12 5 Power 460 3P 60Hz Compres...

Page 12: ...2650 8 3080 2 3223 7 3354 2 3510 7 10 4 kcal h 204 8 201 2 210 9 219 6 228 0 264 9 277 2 288 5 301 9 Min Unit Capacity 8 5 12 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 Power 460 3P 60Hz Compressor Model Qty 1227...

Page 13: ...630 16 7 16 417 14 7 16 366 124 1 4 3157 4 102 45 3 16 1148 5 127 6 152 WCFX E 15S 2 1 16 53 16 7 8 429 101 7 8 2588 6 153 1 9 16 39 12 3 8 315 5 5 8 143 83 1 4 2115 28 1 8 715 18 3 16 462 15 3 8 391...

Page 14: ...530 164 3 16 4171 11 16 17 3 1 2 89 6 7 8 175 15 7 8 403 22 5 16 567 30 3 4 782 5 5 8 143 70 1778 6 152 8 203 WCFX E 30S 20 508 40 11 16 1033 40 11 16 1033 40 11 16 1033 25 635 58 1 2 1486 53 1 2 135...

Page 15: ...3 16 3866 29 1 4 743 5 5 8 143 5 5 8 143 5 5 8 143 5 5 8 143 19 3 16 487 20 3 16 513 15 1 4 387 15 1 4 387 15 1 4 387 5 5 8 143 6 7 8 175 6 7 8 175 12 5 8 321 12 5 8 321 12 7 8 327 18 1 4 464 78 7 8 2...

Page 16: ...64 1 2 1638 64 1 2 1638 86 11 16 2202 7 8 22 1 7 8 48 18 15 16 480 196 3 4 4997 1 1 2 38 3 7 8 99 8 5 8 219 20 508 28 5 16 719 39 11 16 1008 7 3 8 187 80 2032 10 254 10 254 WCFX E 60T 15 381 55 1397...

Page 17: ...2057 86 2184 7 8 22 1 7 8 48 20 5 8 524 213 3 4 5429 1 1 2 38 4 1 4 108 10 3 16 259 25 1 2 648 27 5 16 694 41 1 2 1055 8 1 8 207 88 2235 12 305 12 305 WCFX E 84 15 381 60 11 16 1541 60 11 16 1541 60...

Page 18: ...1 11 16 1312 10 3 4 273 99 2515 14 356 14 356 WCFX E 118 20 508 52 7 16 1331 52 7 16 1331 52 7 16 1331 27 686 72 5 8 1845 72 5 8 1845 129 9 16 3291 7 8 22 1 7 8 48 17 7 8 454 199 5055 1 1 2 38 3 1 2 8...

Page 19: ...50T 2521 1144 3385 1536 2403 1090 3181 1443 2285 1036 2976 1350 2166 983 2771 1257 21688 9837 54T 2696 1223 3713 1684 2579 1170 3489 1583 2461 1116 3265 1481 2343 1063 3041 1380 23588 10699 57T 2811...

Page 20: ...6T 1 10 100 1000 10000 Pressure Drop ft wg Water Flow Rate USgpm 1 10 100 100 1000 10000 Pressure Drop ft wg Water Flow Rate USgpm 46T 50T 73T 75T 81T 54T 57T 60T 20T 22T 24T 27T 30T 38T 40T 20T 22T 2...

Page 21: ...ate USgpm WATER PRESSURE DROP IMPERIAL UNITS 1C EVAPORATOR 3 PASS a Single Compressor b Twin Compressors c Three Compressors 2A CONDENSER 1 PASS a Single Compressor b Twin Compressors c Three Compress...

Page 22: ...Rate USgpm WATER PRESSURE DROP IMPERIAL UNITS 2B CONDENSER 2 PASS a Single Compressor b Twin Compressors c Three Compressors 2C CONDENSER 3 PASS a Single Compressor b Twin Compressors c Three Compress...

Page 23: ...10 100 1000 100 1000 10000 Pressure Drop kPa Water Flow Rate m hr 57T 60T 73T 75T 81T 10 100 100 1000 10000 Pressure Drop kPa Water Flow Rate m hr 20T 22T 24T 40T 38T 27T 30T 54T 50T 46T 40T 20T 22T 2...

Page 24: ...WATER PRESSURE DROP SI UNITS 1C EVAPORATOR 3 PASS a Single Compressor b Twin Compressors c Three Compressors 2A CONDENSER 1 PASS a Single Compressor b Twin Compressors c Three Compressors Note Above...

Page 25: ...ER PRESSURE DROP SI UNITS 2B CONDENSER 2 PASS a Single Compressor b Twin Compressors c Three Compressors 2C CONDENSER 3 PASS a Single Compressor b Twin Compressors c Three Compressors Note Above water...

Page 26: ...0 408 3 612 4 20S 460VAC 10 400 200 1222 1 154 499 749 20T 460VAC 10 300 200 1210 2 78 0 2 283 0 2 424 5 2 22T 460VAC 10 400 200 1210 1 1212 1 78 0 104 0 283 0 392 0 424 5 588 0 23S 460VAC 10 400 200...

Page 27: ...27 TYPICAL WIRING SCHEMATIC Two Compressors Unit...

Page 28: ...28 TYPICAL WIRING SCHEMATIC...

Page 29: ...29 TYPICAL WIRING SCHEMATIC...

Page 30: ...30 TYPICAL WIRING SCHEMATIC...

Page 31: ...31 TYPICAL WIRING SCHEMATIC...

Page 32: ...only the capacity required for the variable heating load This would enable the remainder of the base cooling load to be handled by a separate chiller utilizing evaporator entering condensing water tem...

Page 33: ...e point floating or tri state control and the analog can be used to drive a 0 10 vdc actuator Thus even though there has been a trend toward fan cycling control of cooling towers it is not a device th...

Page 34: ...ages can be controlled via an Equipment Management Center D Unit mounted disconnect switch 400 to 575 volts applications D Flanged semi hermetic compressor D Discharge service valve for MSC 226 series...

Page 35: ...ompressor loading based on leaving chilled water temperature It shall provide for high and low refrigerant pressure protection low oil level protection evaporator water freeze protection sensor error...

Page 36: ......

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