30GX – NEE

Nominal cooling capacity 278-1227 kW60 Hz

The 30GX units are air-cooled chillers, designed from the ground up to meet the needs of today and tomorrow:- ecological HFC-134a refrigerant- screw compressors- compact footprint- mechanically cleanable evaporatorAll units are equipped with PRO-DIALOG Plus control to optimize the efficiency of the refrigerant circuit, and with the revolutionary FLYING BIRD fan with rotating shroud. This innovative fan considerably reduces the air circulation noise and contributes to quiet unit operation. It is made of fully recyclable composite materials.The

high outdoor temperature versions

are equipped with condensers with non-slatted double-wavy fins to reduce the fouling effect (sand, dust etc.), and with ventilated control boxes to keep the electrical components at the right tempe-rature.

Features

�

Quality design and construction make the 30GX unit the preferred choice.

�

Non-controlled, ozone-benign HFC-134a refrigerant. HCF-134a is a proven, non-toxic, non-flammable refriger-ant which will have the highest usage of any new refriger-ant.

�

Medium-pressure refrigerant HFC-134a minimizes stress on the compressors and ensures their long operating life.

�

The 30GX units are equipped with screw compressors and with shrouded axial Flying Bird fans for extremely quiet operation and low-vibration levels.

�

The 30GX units exceed the efficiency level of average industry standards for both full- and part-load operation, saving on operating costs, through lower electrical costs.

�

The 30GX control is fully automatic. The leaving water temperature is continuously monitored to detect load and flow changes. This combination provides the most precise temperature control available.

�

Two independent refrigerant circuits - the second one takes over automatically, when the first one malfunctions, main-taining partial cooling under all circumstances.

�

Easy installation - the 30GX chillers are supplied with a full refrigerant charge, and conveniently located power supply and water inlet and outlet connections.

�

Auto-diagnostics - quick display of the machine status.

�

Multiple compressor concept for optimized part-load effi-ciency and minimized starting current.

�

Series star/delta starter, limiting the start-up current on 30GX 082-182 units.

Easy installation

�

The 30GX has a compact design that is up to 50% smaller than current chillers. The 30GX is supplied as a complete package for easy installation. There are no extra controls, timers, starters or other items to install.

�

30GX units have a single power point and one main discon-nect/isolator switch for sizes 30GX 082 to 182, and one power point and one main disconnect/isolator switch per circuit for sizes 30GX 207 to 358.

�

The hydraulic connections are simple and facilitated by the use of Victaulic connections for the evaporator.

Air-Cooled Screw Compressor Liquid Chillers,High Outdoor Temperature Version

GLOBAL CHILLER

Simple to service

�

Mechanically-cleanable evaporator

�

Twin-screw compressors which require minimum routine service or maintenance.

�

Easily accessed suction and discharge pressure and tempe-rature information via a display module.

PRO-DIALOG Plus control

PRO-DIALOG Plus is an advanced numeric control system that combines intelligence with great operating simplicity.

PRO-DIALOG Plus ensures intelligent leaving water temperature control and optimises energy require-ments.

�

The PID control algorithm with permanent compensation for the difference between the heat exchanger entering and leaving temperature, anticipates load variations, guarantees leaving water temperature stability and prevents unneces-sary compressor cycling.

�

The long-stroke electronic expansion valves (EXV), together with refrigerant level control via heat exchange in the evaporator, allows a significant energy efficiency improvement at part load conditions, and faultless chiller operation in a wider temperature range.

�

Adjustable ramp loading, according to the inertia of the application, avoids load increases that are too fast and too frequent, increasing unit life and limiting power consump-tion peaks.

�

Several capacity loading possibilities ensure improved start-up at low outdoor air temperature, and permit use of one of the refrigerant circuits as a back-up circuit.

PRO-DIALOG Plus ensures preventive protection and enhances chiller reliability

�

Equalisation of compressor operating hours

�

No capillary tubes or pressostats (except as safety device)

�

PRO-DIALOG Plus monitors all chiller safety parameters. The fault history function and the fault codes facilitate immediate location of faults and in certain cases the condi-tions causing the alarm. Prognostic and preventive mainte-nance functions (incorrect water loop, oil filter dirty etc.) permit anticipation of possible problems.

PRO-DIALOG Plus offers extended communications capabilities

�

Clear and easy-to-understand operator interface. The LEDs, numeric displays and touch keys are well-positioned on the schematic chiller diagram. The user immediately knows all operating parameters: pressures, temperatures, operating hours, etc.

�

The extensive chiller remote control capabilities (wired connection) allow integration into building monitoring sys-tems (see Technical Description)

�

RS485 series port for connection to the Carrier Comfort Network (CCN) or any other monitoring system (optional communications interface with open protocol allows trans-fer of almost 40 parameters).

�

Parallel piloting of two units as standard, or of several units with Flotronic System Manager (FSM) and Chiller System Manager (CSM III) options.

�

The control permits:- Control in master/slave configuration of two units operat-

ing in parallel.- Programming of operating time schedules (up to 8 peri-

ods per week)- Programming of operating time schedules for the second

set point (up to 8 periods per week)- Definition of operating time period with demand limit.- Integration of the unit into a building monitoring system

(BMS): serial port RS 485.

�

Control of the customer’s water pump (dual pump with automatic change-over optional).

�

Control at the second set point (example: room unoccu-pied).Set point reset as a function of the air temperature or the difference between entering and leaving water temperature.

Options and accessories

* Air entering high temperature limit modified – see electronic selection program

Option Accessory

Condenser anti-corrosion treatment for light marine and urban applications X*

Condenser anti-corrosion treatment for heavy-duty rural, urban and industrial applications X*

Protection grilles X X

High and low pressure manometers X

Compressor suction valve X

Evaporator with one pass less X

Evaporator maximum water-side operating pressure of 21 bar X

Compressor and evaporator sound enclosure X

Unit with low noise level X*

Unit with very low noise level (option 15LN - combination of two previous options) X

RS485 communications interface with open protocol X X

Compressor soft start (30GX 207-358) - electronic starter X

Tropicalized control box X

Brine unit for leaving brine < +4°C and > -6°C X

Reversed evaporator water inlet/outlet X

Available fan pressure 150 Pa X

Kit with Victaulic collars, connection flanges and counter-flanges (evaporator inlet and outlet) X

Kit with Victaulic collars and 150 mm welded pipe joints (evaporator inlet and outlet) X

Carrier´s environmental leadership

PRO-DIALOG Plus operator interface

The 30GX is 20-50% smaller than the chillers it replacesCarrier POWER

3

twin-screw compressor

Low-noise FLYING BIRD axial fan with rotating shroud

Physical data - option 60 or 61

Electrical data – option 60 (460 V – 60 Hz)

* Standard ARI conditions: Evaporator entering/leaving water temperature 12.2°C and 6.7°C. Outdoor air temperature 35°C.** Power input, compressor and fan, at unit operating limits and a nominal voltage of 460 V (data given on the unit name plate).

*** Maximum unit operating current at maximum unit power input.**** Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + fan current + locked rotor current or reduced starting current of the largest compressor).

Fan electrical data = power input 1,75 kW and current draw 3 A per fan† Current and power inputs not included in the values above

N/A Not applicable

30GX NEE 082 092 102 112 122 132 152 162 182 207 227 247 267 298 328 358

Nominal cooling capacity*

kW 278 299 323 382 411 444 504 534 607 699 758 821 930 1001 1111 1227

Operating weight

kg 3208 3239 3248 3521 3535 3549 3995 4011 5009 5809 5824 6467 6639 7738 8235 8406

Refrigerant charge**

HFC-134aCircuit A kg 57 60 56 59 64 61 81 81 96 139 139 174 189 183 176 189Circuit B kg 58 53 56 58 62 66 76 82 100 91 91 98 114 163 177 187

Compressors

Semi-hermetic, twin-screw POWER

3

Quantity - Circuit A 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2Quantity - Circuit B 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2Capacity control PRO-DIALOG Plus controlNo. of control steps 6 6 6 6 6 6 6 6 6 8 8 8 8 10 10 10Minimum step capacity % 19 21 19 21 19 21 19 21 21 16 14 14 14 9 10 10

Evaporator

Shell and tube with internally finned copper tubesNet water volume l 50 58 58 69 69 73 65 65 88 126 126 155 170 191 208 208Water connections Victaulic connectionsInlet/outlet in 4 4 4 5 5 5 5 5 5 6 6 6 6 8 8 8Drain and vent (NPT) in 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8 3/8Max. water side operating pressure kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000

Condensers

Copper tubes, aluminium finsCondenser fans Axial FLYING BIRD fan with a rotating shroudQuantity 4 4 4 6 6 6 8 8 8 10 10 12 12 14 16 16Fan speed r/s 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8 15.8

Total air flow (460 V)

l/s 20241 20241 20241 30362 30362 30362 40482 40482 40482 50603 50603 60723 60723 70844 80964 80964

Total air flow (380 V)

l/s 19699 19699 19699 29548 29548 29548 39398 39398 39398 49247 49247 59097 59097 68946 78796 78796

* Standard ARI conditions: Evaporator entering/leaving water temperature 12.2°C and 6.7°C. Outdoor air temperature 35°C, evaporator fouling factor of 0.000022 m

2

K/W.** The weights shown are guidelines only. For the unit refrigerant charge please refer to the unit nameplate.

30GX NEE 082 092 102 112 122 132 152 162 182 207 227 247 267 298 328 358

Power circuit

Nominal power supply V-ph-Hz 460-3-60Voltage range V 418-506

Control circuit supply

The control circuit is supplied via the factory-installed transformer

Nominal power input*

kW 91 100 114 121 143 163 174 187 209 235 269 280 314 356 382 427

Nominal current drawn*

A 160 173 190 213 234 254 282 304 350 386 428 456 525 558 608 700

Maximum power input**

kW 126 138 153 172 190 208 228 245 291 313 348 368 436 453 490 582Circuit A kW - - - - - - - - - 190 225 245 291 245 245 291Circuit B kW - - - - - - - - - 123 123 123 145 208 245 291

Maximum current drawn (Un - 10%)

A 199 217 240 271 298 325 357 382 454 489 541 573 681 707 764 908Circuit A*** A - - - - - - - - - 298 350 382 454 382 382 454Circuit B*** A - - - - - - - - - 191 191 191 227 325 382 454

Maximum current drawn (Un)

A 181 197 219 246 271 296 325 348 412 445 493 522 618 644 696 824Circuit A*** A - - - - - - - - - 271 319 348 412 348 348 412Circuit B*** A - - - - - - - - - 174 174 174 206 296 348 412

Maximum starting current, standard unit**** (Un)

A 271 288 321 348 391 416 454 477 589 1126 1251 1280 1599 1401 1453 1806

Circuit A*** A - - - - - - - - - 952 1077 1106 1393 1106 1106 1393Circuit B*** A - - - - - - - - - 932 932 932 1187 977 1106 1393

Max. starting current/max. current draw ratio, unit

1.50 1.46 1.47 1.41 1.44 1.41 1.40 1.37 1.43 2.53 2.54 2.45 2.59 2.18 2.09 2.19Max. starting current/max. current draw ratio, circuit A - - - - - - - - - 3.52 3.38 3.18 3.38 3.18 3.18 3.38Max. starting current/max. current draw ratio, circuit B - - - - - - - - - 5.36 5.36 5.36 5.76 3.30 3.18 3.38

Max. starting current - reduced current start**** (Un)

Astd. std. std. std. std. std. std. std. std. 716 791 820 959 941 993 1166

Circuit A std. std. std. std. std. std. std. std. std. 542 617 646 753 646 646 753Circuit B std. std. std. std. std. std. std. std. std. 332 332 332 417 567 646 753

Max.starting current - red. current start/max. current draw ratio, unit

Astd. std. std. std. std. std. std. std. std. 1.61 1.61 1.57 1.55 1.46 1.43 1.41

Circuit A std. std. std. std. std. std. std. std. std. 2.00 1.94 1.86 1.83 1.86 1.86 1.83Circuit B std. std. std. std. std. std. std. std. std. 1.91 1.91 1.91 2.02 1.92 1.86 1.83

Three-phase short-circuit holding current

kA 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A - - - - - - - - - 25 25 25 25 25 25 25Circuit B - - - - - - - - - 25 25 25 25 25 25 25

Standby power, unit or circuit A†

for evaporator water pump connections kW 4 4 4 5.5 5.5 5.5 7.5 7.5 7.5 7.5 9 9 9 15 15 15

Operating limits

Evaporator water flow rates

30GX NEE

Minimum flow rate, l/s Maximum flow rate, l/s

082

5.2 20.8

092-102

6.5 25.9

112-132

7.4 29.6

152-162

9.4 37.8

182

11.5 45.9

207-227

14.1 56.3

247

16.3 65.2

267

18.3 73.4

298

20.9 83.7

328-358

23.0 91.9

Electrical data – option 61 (380 V – 60 Hz)

30GX NEE 082 092 102 112 122 132 152 162 182 207 227 247 267 298 328 358

Power circuit

Nominal power supply V-ph-Hz 380-3-60Voltage range V 345-418

Control circuit supply

The control circuit is supplied via the factory-installed transformer

Nominal power input*

kW 91 99 113 121 142 163 173 187 208 234 267 279 312 354 380 425

Nominal current drawn*

A 192 208 229 256 280 305 338 365 420 463 514 547 630 670 729 841

Maximum power input**

kW 125 137 153 172 190 208 227 244 290 312 346 366 435 452 488 580Circuit A kW - - - - - - - - - 190 224 244 290 244 244 290Circuit B kW - - - - - - - - - 122 122 122 145 208 244 290

Maximum current drawn (Un - 10%)

A 239 260 289 325 358 391 428 459 545 588 651 689 818 850 918 1090Circuit A*** A - - - - - - - - - 358 421 459 545 459 459 545Circuit B*** A - - - - - - - - - 230 230 230 273 391 459 545

Maximum current drawn (Un)

A 217 237 263 295 325 355 389 417 496 534 592 626 744 772 834 992Circuit A*** A - - - - - - - - - 325 383 417 496 417 417 496Circuit B*** A - - - - - - - - - 209 209 209 248 355 417 496

Maximum starting current, standard unit**** (Un)

A 308 328 364 396 443 473 515 542 671 1272 1413 1447 1808 1594 1656 2055Circuit A*** A - - - - - - - - - 1063 1204 1238 1560 1238 1238 1560Circuit B*** A - - - - - - - - - 1030 1030 1030 1312 1093 1238 1560

Max. starting current/max. current draw ratio, unit

1.42 1.38 1.38 1.34 1.36 1.33 1.32 1.30 1.35 2.38 2.39 2.31 2.43 2.06 1.98 2.07Max. starting current/max. current draw ratio, circuit A - - - - - - - - - 3.27 3.14 2.97 3.15 2.97 2.97 3.15Max. starting current/max. current draw ratio, circuit B - - - - - - - - - 4.94 4.94 4.94 5.29 3.08 2.97 3.15

Max. starting current - reduced current start**** (Un)

A std. std. std. std. std. std. std. std. std. 816 906 940 1109 1087 1149 1356Circuit A A std. std. std. std. std. std. std. std. std. 607 697 731 861 731 731 861Circuit B A std. std. std. std. std. std. std. std. std. 373 373 373 463 637 731 861

Max.starting current - red. current start/max. current draw ratio, unit

std. std. std. std. std. std. std. std. std. 1.53 1.53 1.50 1.49 1.41 1.38 1.37

Circuit A std. std. std. std. std. std. std. std. std. 1.87 1.82 1.75 1.74 1.75 1.75 1.74Circuit B std. std. std. std. std. std. std. std. std. 1.79 1.79 1.79 1.87 1.79 1.75 1.74

Three-phase short-circuit holding current

kA 25 25 25 25 25 25 25 25 25 N/A N/A N/A N/A N/A N/A N/ACircuit A kA - - - - - - - - - 25 25 25 25 25 25 25Circuit B kA - - - - - - - - - 25 25 25 25 25 25 25

Standby power unit or circuit A†

for evaporator water pump connections kW 4 4 4 5.5 5.5 5.5 7.5 7.5 7.5 7.5 9 9 9 15 15 15

* Standard ARI conditions: Evaporator entering/leaving water temperature 12.2°C and 6.7°C. Outdoor air temperature 35°C.** Power input, compressor and fan, at unit operating limits and a nominal voltage of 380 V (data given on the unit name plate).

*** Maximum unit operating current at maximum unit power input.**** Maximum instantaneous starting current (maximum operating current of the smallest compressor(s) + fan current + locked rotor current or reduced starting current of the largest compressor).

Fan electrical data = power input 1,62 kW and current draw 3,2 A per fan† Current and power inputs not included in the values above

N/A Not applicable

Dimensions/clearances

30GX 082-182 NEE

30GX NEE

A B

082-092-102

2965 1900

112-122-132

3425 1700

152-162

4340 2400

182

5995 1850

2297

30GX - 08230GX - 09230GX - 10230GX - 11230GX - 12230GX - 132

30GX - 15230GX - 16230GX - 182

A

500500

1830 1

1 1

1

22

1830

2254

B

Do not obstruct

Dimensions/clearances

30GX 207-358 NEE

30GX NEE

A B

207-227

5995 2850

247-267

6910 2850

298

7825 2050

328-358

8740 1150

1

2

1

2

11

500500

1830

1830

B

2297

A

2254

Do not obstruct

Legend:

All dimensions are given in mm.

Required clearances for maintenance

Recommended space for tube removal, space can be either on the right or the left hand side.

Water outlet

Water inlet

Air outlet, do not obstruct

Power supply

NOTE:

For a specific installation, consult the certified dimensional drawings, available on request.

1

2

Do not obstruct

Cooling capacities - option 61 (380 V – 60 Hz)

30GXNEE

Condenser entering air temperature, °C

LW

T

35 40 45 48 50 52

CAP COMP UNIT COOL CAP COMP UNIT COOL CAP COMP UNIT COOL ST CAP COMP

UNIT COOL ST CAP COMP UNIT COOL ST CAP COMP UNIT COOL ST

˚C kW kW kW l/s kPa kW kW kW l/s kPa kW kW kW l/s kPa % kW kW kW l/s kPa % kW kW kW l/s kPa % kW kW kW l/s kPa %

082

4 252 80 87 12.1 43 234 87 93 11.2 37 215 93 100 10.3 32 204 97 104 9.73 28 196 100 107 9.36 26 188 103 110 8.98 25

092

272 88 95 13 38 251 95 101 12 33 230 102 108 11 28 217 106 113 10.4 25 208 109 116 9.95 23 199 112 119 9.52 21

102

295 101 108 14.1 44 272 109 115 13 38 249 117 123 11.9 32 235 122 128 11.2 29 226 125 132 10.8 26 177 110 116 8.46 17 71

112

345 106 116 16.5 43 321 114 123 15.3 38 296 122 132 14.2 32 281 128 138 13.4 29 271 132 141 12.9 27 260 135 145 12.4 25

122

373 126 136 17.8 50 347 135 145 16.6 43 320 145 155 15.3 37 304 152 161 14.5 34 292 156 166 14 31 236 137 147 11.3 21 71

132

404 145 155 19.3 51 376 156 166 18 44 346 168 177 16.5 38 328 175 185 15.7 34 316 180 190 15.1 32 304 185 195 14.5 30

152

454 152 165 21.7 40 425 162 175 20.3 36 395 174 187 18.9 31 376 181 194 18 28 364 187 200 17.4 27 351 192 205 16.8 25

162

483 165 178 23.1 45 452 176 189 21.6 40 420 188 201 20.1 35 401 196 209 19.2 32 388 201 214 18.5 30 374 207 220 17.9 28

182

558 186 199 26.6 47 537 205 218 25.7 44 515 226 239 24.6 41 501 239 252 23.9 39 359 184 197 17.1 21 71 352 192 205 16.8 20 71

207

631 207 223 30.2 45 589 222 238 28.2 40 546 238 255 26.1 34 520 249 265 24.8 31 502 256 272 24 29 484 264 280 23.1 27

227

688 238 255 32.9 53 642 255 271 30.7 46 595 274 290 28.5 40 567 285 301 27.1 37 547 293 309 26.1 34 432 254 270 20.6 22 71

247

741 246 265 35.4 44 694 263 282 33.1 39 645 281 301 30.8 34 616 293 312 29.4 31 596 301 320 28.5 29 575 309 329 27.5 28

267

852 280 299 40.7 49 822 307 326 39.3 46 789 337 357 37.7 42 608 294 314 29 26 71 524 273 293 25 20 71 512 284 304 24.5 19 71

298

906 314 337 43.3 41 845 336 359 40.4 36 783 360 382 37.4 31 745 375 397 35.6 29 719 385 408 34.4 27 599 349 372 28.6 19 60

328

999 335 361 47.7 42 938 358 383 44.8 37 875 382 408 41.8 33 836 398 424 40 30 810 409 435 38.7 28 492 256 282 23.5 11 61

358

1126 381 407 54 52 1084 418 443 52 49 1041 459 484 49.7 45 619 280 306 29.6 17 61 608 291 317 29 16 61 596 302 328 28.5 16 61

082

5 261 82 88 12.5 45 242 88 94 11.6 39 222 95 101 10.6 34 211 99 105 10.1 30 202 102 108 9.67 28 194 105 111 9.29 26

092

281 90 96 13.4 40 259 96 103 12.4 35 238 103 110 11.4 29 224 108 114 10.7 26 215 111 118 10.3 24 206 114 121 9.84 22

102

304 103 110 14.5 46 281 111 117 13.4 40 257 119 125 12.3 34 242 124 131 11.6 30 191 108 114 9.14 19 71 183 111 117 8.75 18 71

112

357 108 118 17.1 46 332 116 125 15.9 40 307 124 134 14.7 35 291 130 140 13.9 31 280 134 143 13.4 29 270 138 147 12.9 27

122

386 128 138 18.4 53 359 138 147 17.2 46 331 148 158 15.8 40 314 154 164 15 36 302 159 169 14.4 33 245 139 149 11.7 22 71

132

418 148 158 20 54 388 159 169 18.5 47 358 171 180 17.1 40 339 178 188 16.2 36 326 183 193 15.6 34 221 140 149 10.6 16 71

152

471 155 168 22.5 43 440 165 178 21 38 409 177 190 19.6 33 390 185 198 18.6 30 377 190 203 18 28 364 195 208 17.4 27

162

500 168 181 23.9 48 468 179 192 22.4 43 435 191 204 20.8 37 415 199 212 19.8 34 402 205 218 19.2 32 336 187 200 16.1 23 71

182

574 189 202 27.4 50 552 208 221 26.4 47 529 230 243 25.3 43 448 211 224 21.4 31 86 374 187 200 17.9 22 71 368 195 208 17.6 22 71207 654 211 227 31.2 48 610 226 242 29.2 42 566 243 259 27.1 37 539 253 269 25.8 33 520 260 277 24.9 31 502 268 284 24 29227 711 243 259 34 56 664 260 276 31.7 49 616 279 295 29.4 43 586 290 306 28 39 464 249 265 22.2 25 71 448 257 273 21.4 24 71247 767 251 270 36.7 47 719 268 287 34.3 42 669 286 306 32 37 638 298 317 30.5 34 617 306 326 29.5 32 596 315 334 28.5 30267 878 285 304 42 52 846 312 332 40.4 48 812 343 363 38.8 45 556 267 286 26.6 22 71 545 278 297 26 21 71 533 289 308 25.5 20 71298 937 320 343 44.8 44 875 342 365 41.8 39 811 366 389 38.7 34 771 382 404 36.9 31 745 392 415 35.6 29 443 234 256 21.2 11 60328 1037 342 368 49.5 45 973 365 391 46.5 40 908 389 415 43.4 35 868 405 431 41.5 32 841 416 442 40.2 30 512 259 285 24.5 12 61358 1159 387 413 55 55 1116 425 451 53 52 1071 467 493 51 48 641 284 310 30.6 18 61 629 295 321 30.1 18 61 617 306 332 29.5 17 61

082 6 269 83 90 12.9 48 250 89 96 11.9 42 230 96 103 11 36 217 100 107 10.4 32 209 103 110 9.99 30 201 106 113 9.59 28092 290 91 98 13.8 43 268 98 105 12.8 37 245 105 112 11.7 31 231 110 116 11.1 28 222 113 119 10.6 26 213 116 123 10.2 24102 313 105 112 15 49 289 113 119 13.8 42 265 121 127 12.7 36 250 126 133 11.9 32 198 109 115 9.44 21 71 189 112 119 9.04 19 71112 369 110 120 17.7 49 344 118 128 16.4 43 317 126 136 15.2 37 301 132 142 14.4 33 290 136 145 13.9 31 279 140 149 13.3 29122 399 131 140 19.1 56 371 140 150 17.7 49 342 150 160 16.3 42 324 157 167 15.5 38 312 161 171 14.9 36 253 141 150 12.1 24 71132 431 151 161 20.6 57 400 162 171 19.1 50 369 173 183 17.6 43 350 181 191 16.7 38 337 186 196 16.1 36 229 141 151 10.9 17 71152 487 158 171 23.3 46 456 168 181 21.8 41 424 180 193 20.2 35 404 188 201 19.3 32 391 193 206 18.7 30 324 174 187 15.5 21 71162 517 171 184 24.7 51 484 183 195 23.1 45 450 195 208 21.5 40 430 203 216 20.5 36 416 208 221 19.9 34 295 166 179 14.1 18 71182 591 192 205 28.2 53 568 212 225 27.1 49 544 234 247 26 45 462 215 228 22.1 33 86 390 191 204 18.6 24 71 384 199 212 18.3 23 71207 676 215 231 32.3 51 632 230 246 30.2 45 586 247 263 28 39 558 257 274 26.7 36 539 265 281 25.7 33 413 227 243 19.7 20 71227 735 248 264 35.1 60 686 265 281 32.8 52 636 283 300 30.4 45 606 295 311 28.9 41 481 253 269 23 27 71 463 260 276 22.1 25 71247 794 256 275 37.9 51 744 273 292 35.5 45 692 291 311 33.1 39 660 303 323 31.6 36 639 311 331 30.5 34 504 271 291 24.1 22 71267 904 289 309 43.2 55 871 318 337 41.6 51 835 349 368 39.9 47 577 271 290 27.6 23 71 566 282 301 27 23 71 554 293 312 26.5 22 71298 969 327 349 46.3 47 905 349 372 43.2 41 838 373 396 40.1 36 798 388 411 38.1 33 770 399 422 36.8 30 460 236 259 22 12 60328 1074 349 375 51 48 1009 372 398 48.2 43 941 397 423 45 38 900 413 439 43 35 873 424 450 41.7 33 533 263 289 25.5 13 61358 1193 394 420 57 58 1149 433 459 55 54 681 272 298 32.5 20 61 663 288 314 31.7 19 61 651 299 325 31.1 19 61 639 310 336 30.5 18 61

082 7 278 85 91 13.3 51 258 91 97 12.3 44 237 98 104 11.3 38 224 102 108 10.7 34 216 105 111 10.3 32 207 108 114 9.9 29092 299 93 100 14.3 45 276 100 106 13.2 39 253 107 113 12.1 33 239 111 118 11.4 30 229 115 121 10.9 27 219 118 124 10.5 25102 323 107 114 15.4 52 298 115 121 14.2 45 273 123 130 13 38 257 128 135 12.3 34 204 110 117 9.74 22 71 195 114 120 9.33 20 71112 382 112 121 18.2 52 355 120 130 17 45 328 129 138 15.7 39 311 134 144 14.9 35 300 138 148 14.3 33 288 142 152 13.8 31122 411 133 143 19.7 60 382 143 152 18.3 52 353 153 163 16.9 45 334 159 169 16 40 322 164 174 15.4 38 262 142 152 12.5 25 71132 444 154 163 21.2 60 413 165 174 19.7 53 380 176 186 18.2 45 361 184 194 17.2 41 347 189 199 16.6 38 236 142 152 11.3 18 71152 504 161 174 24.1 49 471 171 184 22.5 43 438 183 196 20.9 38 418 191 204 20 34 404 196 209 19.3 32 335 176 189 16 23 71162 534 175 187 25.5 55 500 186 199 23.9 48 466 198 211 22.2 42 444 206 219 21.2 38 430 212 225 20.5 36 305 168 181 14.6 19 71182 607 196 209 29 56 584 216 229 27.9 52 559 238 251 26.7 48 412 186 199 19.7 27 71 406 194 207 19.4 26 71 399 202 215 19.1 25 71207 699 219 235 33.4 54 653 234 250 31.2 48 606 251 267 28.9 42 577 262 278 27.6 38 557 269 285 26.6 36 427 230 246 20.4 22 71227 758 252 269 36.2 63 708 270 286 33.8 56 657 288 305 31.4 48 625 300 317 29.9 44 497 256 272 23.8 29 71 479 264 280 22.9 27 71247 821 260 280 39.2 54 769 278 297 36.7 48 715 296 316 34.2 42 683 308 328 32.6 38 661 317 336 31.6 36 522 275 294 24.9 23 71267 930 294 314 44.4 58 895 323 343 42.8 54 859 355 374 41 50 598 275 294 28.6 25 71 587 286 305 28 24 71 576 297 317 27.5 23 71298 1001 333 356 47.8 50 934 355 378 44.6 44 866 380 402 41.4 38 824 395 418 39.4 35 690 354 377 33 25 60 476 239 262 22.8 12 60328 1111 356 382 53 51 1044 379 405 49.9 46 975 404 430 46.6 40 932 420 446 44.6 37 571 258 284 27.3 15 61 554 266 292 26.5 14 61358 1227 401 427 59 62 1181 440 466 56 57 703 275 301 33.6 22 61 685 292 318 32.7 21 61 673 303 329 32.2 20 61 582 231 257 27.8 15 50

Legend:LWT Leaving water temperatureCAP kW Cooling capacityCOMP kW Compressor power inputUNIT kW Unit power input (compressors, fans, control)COOL l/s Evaporator water flow rateCOOL kPa Evaporator pressure dropST % Maximum unit operating threshold (unloading) in % of the theoretical swept vol-

ume of the compressors. The values in the “UNIT” columns are guidelines only, as they depend on the unit operating conditions before unloading.

Only interpolation is permitted. For all other cases use the selection programme.The minimum outside temperature is +5°C.The published performances are in accordance with Eurovent.

Application data:Standard unitsRefrigerant: R-134aEvaporator water temperature rise: 5 KEvaporator fluid: chilled water

Attention: The performances and operating limits above are calculated for regularly maintained, clean coils.

Cooling capacities – option 61 (380 V – 60 Hz)30GX NEE

Condenser entering air temperature, °C

LW

T 35 40 45 48 50 52

CAP COMP UNIT COOL CAP COMP UNIT COOL ST CAP COMP UNIT COOL ST CAP COMP UNIT COOL ST CAP COMP UNIT COOL ST CAP COMP UNIT COOL ST

˚C kW kW kW l/s kPa kW kW kW l/s kPa % kW kW kW l/s kPa % kW kW kW l/s kPa % kW kW kW l/s kPa % kW kW kW l/s kPa %

082 8 286 86 93 13.7 54 266 92 99 12.7 47 244 99 106 11.7 40 231 103 110 11.1 36 222 106 113 10.6 34 172 87 93 8.2 21 71092 308 95 101 14.7 48 284 101 108 13.6 41 260 109 115 12.4 35 246 113 120 11.8 31 236 116 123 11.3 29 142 76 83 6.79 11 71102 332 109 116 15.9 55 307 117 123 14.7 47 281 125 132 13.4 40 219 108 115 10.5 25 71 210 112 118 10.1 23 71 159 93 99 7.62 14 71112 394 114 123 18.8 55 366 122 132 17.5 48 338 131 140 16.2 41 321 136 146 15.3 38 309 140 150 14.8 35 298 144 154 14.2 33122 424 135 145 20.3 63 394 145 155 18.8 55 364 155 165 17.4 47 345 162 172 16.5 43 281 140 150 13.4 29 71 270 144 154 12.9 27 71132 458 157 166 21.9 64 425 168 177 20.3 56 392 179 189 18.7 48 372 187 197 17.8 43 254 139 149 12.1 21 71 244 144 153 11.7 20 71152 520 164 177 24.9 52 487 174 187 23.3 46 453 186 199 21.6 40 432 194 207 20.6 37 417 199 212 19.9 34 347 179 192 16.6 24 71162 552 178 191 26.4 58 517 189 202 24.7 51 481 202 215 23 45 459 210 222 21.9 41 444 215 228 21.2 38 316 170 182 15.1 20 71182 624 199 212 29.8 59 599 219 232 28.6 54 573 242 255 27.4 50 427 189 202 20.4 29 71 421 197 210 20.1 28 71207 722 223 239 34.5 58 674 238 255 32.2 51 625 255 271 29.9 44 596 266 282 28.5 40 575 273 290 27.5 38 442 233 249 21.1 23 71227 782 257 273 37.4 67 730 275 291 34.9 59 677 293 310 32.4 51 532 252 268 25.4 32 71 513 259 276 24.5 30 71 495 267 283 23.6 28 71247 847 265 285 40.5 57 794 283 302 37.9 51 739 301 321 35.3 44 705 313 333 33.7 40 682 322 341 32.6 38 482 253 273 23.1 20 71267 956 299 319 45.7 61 920 329 348 43.9 57 709 295 315 33.9 35 71 619 279 298 29.6 27 71 608 290 309 29.1 26 71 430 190 210 20.5 13 47298 1032 339 362 49.3 53 964 362 385 46.1 46 893 386 409 42.7 40 850 402 424 40.6 37 511 234 257 24.4 14 60 493 242 264 23.6 13 60328 1149 363 389 55 55 1079 386 412 52 49 1008 411 437 48.2 43 964 427 453 46.1 39 593 261 287 28.3 16 61 574 269 295 27.4 15 61358 1261 408 434 60 65 1213 448 474 58 60 725 279 305 34.7 23 61 707 295 321 33.8 22 61 695 307 333 33.2 21 61 599 234 259 28.6 16 50

082 10 303 89 96 14.5 60 281 95 102 13.4 52 259 102 109 12.4 45 245 106 113 11.7 40 236 109 116 11.3 38 182 89 95 8.72 23 71092 326 98 104 15.6 53 301 105 111 14.4 46 276 112 119 13.2 39 260 117 123 12.4 35 250 120 126 11.9 32 152 77 84 7.24 13 71102 351 113 120 16.8 61 324 121 127 15.5 52 296 129 136 14.2 44 232 111 118 11.1 28 71 223 114 121 10.7 26 71 170 94 101 8.1 15 71112 418 118 127 20 62 389 126 136 18.6 54 359 135 144 17.2 46 341 140 150 16.3 42 329 144 154 15.7 39 316 148 158 15.1 37122 449 140 150 21.5 70 418 150 160 20 61 385 160 170 18.4 53 365 167 177 17.5 48 299 143 153 14.3 33 71 287 148 157 13.7 30 71132 485 162 172 23.2 71 450 173 183 21.5 62 415 185 195 19.8 53 393 193 203 18.8 48 270 142 151 12.9 24 71 259 146 156 12.4 22 71152 553 169 182 26.4 58 518 180 193 24.7 52 481 193 205 23 45 459 200 213 21.9 41 383 178 191 18.3 29 71 308 157 170 14.7 19 71162 586 184 197 28 65 549 196 209 26.2 57 511 208 221 24.4 50 487 216 229 23.3 46 349 168 181 16.7 24 71 337 173 186 16.1 23 71182 657 205 218 31.4 65 630 227 240 30.1 60 535 216 229 25.6 44 86 459 195 208 21.9 33 71 453 203 216 21.6 32 71207 767 231 247 36.6 65 716 247 263 34.2 57 665 264 280 31.8 50 633 275 291 30.3 45 489 231 247 23.4 28 71 411 212 228 19.6 20 71227 829 267 283 39.6 75 774 284 300 37 66 718 303 319 34.3 57 565 258 275 27 36 71 546 266 282 26.1 34 71 466 248 264 22.3 25 71247 901 275 294 43 64 844 293 312 40.3 57 785 312 331 37.5 50 750 324 343 35.8 45 595 277 297 28.4 29 71 515 259 278 24.6 22 71267 1007 309 328 48.1 67 969 339 359 46.3 62 751 304 324 35.9 39 71 661 287 306 31.6 30 71 650 298 318 31.1 29 71298 1096 352 375 52 59 1023 375 397 48.9 52 948 400 422 45.3 45 785 359 382 37.5 32 60 545 240 262 26.1 16 60 527 247 270 25.2 15 60328 1223 376 402 58 61 1150 400 426 55 55 1075 426 452 51 48 654 260 286 31.3 19 61 635 268 294 30.3 18 61 615 276 301 29.4 17 61358 1329 422 448 63 72 1277 463 489 61 66 770 286 312 36.8 26 61 751 303 329 35.9 25 61 738 315 341 35.3 24 61 633 238 264 30.3 18 50

082 12 321 92 98 15.3 67 297 98 105 14.2 58 273 105 112 13.1 50 259 110 116 12.4 45 202 88 95 9.63 28 71 193 91 97 9.23 26 71092 344 101 108 16.4 59 318 108 115 15.2 51 291 116 122 13.9 43 275 120 127 13.1 39 169 76 82 8.06 15 71 161 78 85 7.69 14 71102 369 117 124 17.7 67 341 125 131 16.3 58 260 109 115 12.4 35 71 246 114 120 11.7 31 71 188 93 99 8.98 19 71 180 96 102 8.58 17 71112 442 122 131 21.1 69 412 130 140 19.7 60 380 139 149 18.2 52 361 145 154 17.3 47 348 148 158 16.6 44 219 106 116 10.5 18 71122 475 145 155 22.7 78 441 155 165 21.1 68 407 165 175 19.4 58 328 143 152 15.7 39 71 316 147 156 15.1 36 71 246 128 137 11.8 23 71132 511 168 178 24.4 79 475 179 189 22.7 68 438 191 201 20.9 59 297 140 150 14.2 28 71 286 144 154 13.7 26 71 275 149 159 13.1 24 71152 586 175 188 28 65 549 187 200 26.2 58 510 199 212 24.4 50 421 178 191 20.1 35 71 407 183 196 19.5 33 71 327 160 173 15.6 22 71162 620 191 204 29.6 72 581 202 215 27.8 64 541 215 228 25.8 56 383 167 180 18.3 29 71 371 172 185 17.7 27 71 358 177 190 17.1 26 71182 690 212 225 33 71 662 234 247 31.6 66 499 189 202 23.8 38 71 490 201 214 23.4 37 71207 812 239 255 38.8 72 759 255 271 36.3 64 704 272 288 33.7 55 671 283 299 32.1 50 519 237 253 24.8 31 71 437 216 232 20.9 23 71227 876 276 292 41.9 83 818 294 310 39.1 73 630 254 270 30.1 45 71 599 265 281 28.6 41 71 579 273 289 27.6 38 71 495 253 269 23.6 28 71247 954 285 304 45.6 71 894 302 322 42.7 63 832 322 341 39.8 55 653 277 296 31.2 35 71 567 257 276 27.1 27 71 547 264 284 26.1 25 71267 1059 319 338 51 74 1018 350 369 48.6 69 720 278 297 34.4 36 71 704 295 314 33.6 34 71 500 192 211 23.9 18 47298 1159 365 387 55 65 1082 388 410 52 57 1003 413 435 47.9 50 600 238 261 28.7 19 60 580 245 268 27.7 18 60 561 252 275 26.8 17 60328 1298 390 416 62 69 1220 414 440 58 61 1141 440 466 55 54 698 267 293 33.3 21 61 677 274 300 32.4 20 61 657 282 308 31.4 19 61358 1397 435 461 67 79 1341 478 504 64 73 815 294 319 38.9 29 61 795 311 337 38 27 61 678 235 261 32.4 20 50 667 243 269 31.9 20 50

082 15 339 95 102 16.2 74 313 101 108 15 64 287 108 115 13.7 54 271 112 119 13 49 209 89 96 9.99 30 71 151 71 78 7.2 16 71092 360 104 111 17.2 64 332 111 118 15.9 55 303 118 125 14.5 46 285 123 129 13.6 41 174 76 83 8.31 16 71 166 79 85 7.92 15 71102 389 121 128 18.6 74 358 129 135 17.1 63 271 111 117 12.9 37 71 255 116 122 12.2 33 71 195 94 100 9.33 20 71 186 97 103 8.9 18 71112 468 126 135 22.4 76 434 134 143 20.7 66 399 142 152 19.1 57 378 148 158 18.1 51 298 127 137 14.3 33 71 227 107 117 10.8 20 71122 503 150 160 24.1 87 466 160 170 22.3 76 362 139 149 17.3 47 71 343 145 155 16.4 42 71 330 149 159 15.8 39 71 256 129 139 12.2 24 71132 541 174 184 25.9 87 500 185 195 23.9 75 327 135 145 15.6 34 71 309 142 151 14.8 30 71 297 146 156 14.2 28 71 285 151 160 13.6 26 71152 626 183 196 29.9 74 584 193 206 27.9 65 541 205 218 25.9 56 441 182 195 21.1 38 71 355 158 171 17 25 71 342 162 175 16.4 24 71162 663 199 212 31.7 82 618 210 223 29.5 72 572 222 235 27.3 62 400 170 183 19.1 32 71 386 175 188 18.5 30 71 372 180 193 17.8 28 71182 724 219 232 34.6 78 692 241 254 33.1 72 522 193 206 24.9 42 71 513 206 218 24.5 40 71207 854 246 262 40.8 79 795 262 278 38 69 736 279 295 35.1 60 555 232 249 26.5 35 71 468 211 227 22.4 26 71 451 217 234 21.5 24 71227 922 285 301 44.1 91 859 303 319 41 80 654 258 275 31.3 48 71 622 269 286 29.7 44 71 533 249 265 25.5 33 71 425 177 193 20.3 21 60247 999 293 312 47.8 78 934 310 330 44.6 69 868 329 349 41.5 60 678 281 300 32.4 38 71 588 260 279 28.1 29 71 567 268 287 27.1 27 71267 1101 326 346 53 80 1056 358 378 50 74 749 283 302 35.8 38 71 732 300 319 35 37 71298 1216 376 399 58 71 1131 398 421 54 62 1045 423 445 50 54 616 240 263 29.4 20 60 596 247 270 28.5 19 60 576 255 277 27.5 18 60328 1356 401 427 65 74 1270 424 450 61 66 1016 387 413 48.6 43 86 714 269 295 34.1 22 61 693 276 302 33.1 21 61 672 284 310 32.1 20 61358 1452 447 472 69 85 865 269 295 41.3 32 61 833 296 322 39.8 30 61 813 313 339 38.8 28 61 693 237 263 33.1 21 50 682 246 272 32.6 20 50

Legend:LWT Leaving water temperatureCAP kW Cooling capacityCOMP kW Compressor power inputUNIT kW Unit power input (compressors, fans, control)COOL l/s Evaporator water flow rateCOOL kPa Evaporator pressure dropST % Maximum unit operating threshold (unloading) in % of the theoretical swept vol-

ume of the compressors. The values in the “UNIT” columns are guidelines only, as they depend on the unit operating conditions before unloading.

Only interpolation is permitted. For all other cases use the selection programme.The minimum outside temperature is +5°C.The published performances are in accordance with Eurovent.

Application data:Standard unitsRefrigerant: R-134aEvaporator water temperature rise: 5 KEvaporator fluid: chilled water

Attention: The performances and operating limits above are calculated for regularly maintained, clean coils.

Guide specificationsAir-cooled liquid chillerSize range: 278 to 1227 kW nominal capacityCarrier model number: 30GX NEE

Part 1 - General 1.01 System description� Microprocessor controlled, air-cooled liquid chiller utiliz-

ing HFC-134a, dual refrigeration circuits, screw compres-sors, and electronic expansion devices.

1.02 Quality assurance� The published performances are in accordance with

Eurovent tolerances. � Unit construction shall comply with European directives:

- Machinery directive 98/37/EC, modified- Low voltage directive 73/23/EEC, modified- Electromagnetic compatibility directive 89/336/EEC,

modified, and the applicable recommendations of Euro-pean standards:

- Machine safety: electrical equipment in machines, gene-ral regulations, EN 60204-1

- Electromagnetic emission EN 50081-2- Electromagnetic immunity EN 50082-2.

� Unit shall be designed, manufactured and tested in a facil-ity with a quality assurance system certified ISO 9001.

� Unit shall be manufactured in a facility with an environ-ment management system certified ISO 14001.

� Unit shall be tested at the factory.

1.03 Delivery, storage and handling � Unit controls shall be capable of withstanding 55°C storage

temperatures in the control compartment.

Part 2 - Products2.01 Equipment� General

Factory assembled, single-piece, air-cooled liquid chiller. Contained within the unit cabinet shall be all factory wir-ing, piping, controls, refrigerant charge (HFC-134a), required prior to field start-up.

� Unit cabinet- Frame shall be made of U steel beam and protected by

three layers of paint.- The control box plates shall be steel with a oven-baked

polyester-paint finish, and be capable of withstanding a 500-hour salt spray test in accordance with the ASTM B-117 standard (U.S.A.).

� Fans- Condenser fans shall be direct-driven, 11-blade, shrouded-

axial type, shall be statically and dynamically balanced, and made of recyclable material with inherent corrosion resistance. Air shall be discharged vertically upward.

- Fans shall be protected by coated steel wire safety guards.

� Compressors- Unit shall have semi-hermetic twin-screw, gear-driven

compressors with internal muffler and check valve.- Each compressor shall be equipped with a discharge shut-

off valve.- Capacity control shall be provided by pilot-operated sole-

noid valve, capable of reducing unit capacity to 20% of full load. Compressor shall start in unloaded condition.

- Motor cooling shall be provided by direct liquid injec-tion and protected by internal overload thermistor.

- Lube oil system shall include pre-filter and internal filter capable of filtration to 3 microns.

� EvaporatorUnit shall be equipped with a single evaporator- Evaporator shall be tested and stamped in accordance

with applicable European pressure code for a refrigerant-side operating pressure of 1700 kPa (Service des Mines units) and for a maximum water-side pressure of 1000 kPa.

- Shall be mechanically cleanable shell-and-tube type with removable heads.

- Tubes shall be internally-enhanced, seamless-copper type, and shall be rolled into tube sheets.

- Shall be equipped with Victaulic water connections (water connection kit on request).

- Shell shall be insulated with 19 mm closed-cell, polyvi-nyl-chloride foam with a maximum K factor of 0.28 and mechanical aluminium protection.

- Shall incorporate two independent refrigerant circuits.- Shall have an evaporator drain and vent.- Shall incorporate a refrigerant level control system.

� Condenser - Coil shall be air-cooled with integral subcooler, and shall

be constructed of aluminum fins mechanically bonded to internally finned copper tubes. The tubes are then cleaned, dehydrated, and sealed.

- Condenser coils shall be leak tested and shall be pressure tested at 3400 kPa.

- Condenser-fan motors shall be 3-phase type with perma-nently-lubricated bearings and Class F (minimum) insula-tion.

� Refrigeration circuitsRefrigerant circuit components shall include oil separators, high and low side pressure relief devices (according to applicable standards), discharge and liquid line shutoff valves, filter driers, moisture indicating sight glasses, electronic expansion devices, refrigerant economizers (182, 267, 358 units), and complete operating charge of both refrigerant HFC-134a and compressor oil.

� Controls, safeties, and diagnostics 1.Controls a. Unit controls shall include as a minimum: the micro-

processor, the LOCAL/OFF/REMOTE/CCN selector and a 6-digit diagnostic display (scroll-down text) with keypad.

b.Shall be capable of performing the following functions:- Automatic change-over between the main compressor

and the non-active compressor(s).- Capacity control based on leaving chilled fluid tempera-

ture with return fluid temperature sensing. - Limiting the chilled fluid temperature pull-down rate at

start-up to an adjustable range of 0.1°C to 1.1°C per minute to prevent excessive demand spikes at start-up.

- Enable adjustment of leaving chilled water temperature according to the return water temperature or the out-door temperature or (sensor supplied as standard) by means of a 0-10 V signal.

- Provide a dual set point for the leaving chilled water temperature activated by a remote contact closure sig-nal.

- Enable a 2-level demand limit control (between 0 and 100%), activated by a remote contact closure or a 0 to 10 V signal.

- Control evaporator water pump and, if installed, safety pump operation.

- Enable automatic changeover in the main phase or shut-down of two chillers in a single system.

- With two time scheduling programs enable unit start-up control and set-point change.

2.Diagnostics a. Display module shall be capable of displaying set points,

system status (including temperatures, pressures, current for each compressor, run time and percent loading), and any alarm or alert conditions.

b.The control shall allow a quick test of all machine ele-ments to verify the correct operation of every switch, cir-cuit breaker, contactor etc. before the chiller is started.

c. The control shall be capable of balancing the compressor operating times and the number of compressor start-ups.

d.EXV control, based on throttling (Carrier patent) opti-mises evaporator charging, ensuring condenser superheat and subcooling.

3.Safeties a. Unit shall be equipped with all necessary components,

and in conjunction with the control system shall provide the unit with protection against the following:- Loss of refrigerant charge.- Reverse rotation.- Low chilled water temperature.- Low oil pressure (per compressor).- Current imbalance.- Thermal overload.- High pressure. - Electrical overload.- Loss of phase.

b.Fan motors shall be individually protected by a circuit breaker

� Control shall provide general alarm remote indication for each refrigeration circuit.

� Control system shall have a RS485 serial output port (option and accessory).

� Operating characteristics- Unit shall be capable of starting and running at full or

part load at outdoor ambient temperatures from 5°C to 52°C.

- Unit shall be capable of starting up with 25°C entering fluid temperature to the evaporator.

� Electrical characteristics- Unit electrical power supply shall enter the unit at one

(30GX 082-182) or two locations.- Unit shall operate on 3-phase power supply without

neutral.- Unit with two compressors (30GX 082-182) shall have a

factory-installed, star-delta starter to limit electrical inrush current.

- Control voltage shall be supplied by a factory-installed transformer.

- Unit shall be supplied with factory-installed electrical disconnect switch/circuit breaker.

� FinishingElectrical cabinet colour: RAL 7035

Manufactured by: Carrier SA, Montluel, France.Order No. 13031-20, 05.2001. Supersedes order No. New. Printed on Totally Chlorine Free Paper.Manufacturer reserves the right to change any product specifications without notice. Printed in the Netherlands.

Electrical data notes 30GX NEE units:

• 30GX 082-182 NEE units have a single power connection point; 30GX 207-358 NEE units have two connection points.

• The control box includes the following standard features:- A main disconnect switch for two-compressor units and a main

disconnect switch per circuit for three- or four-compressor units, motor starting and protection devices for each compressor and the fan(s)

- Control devices

• Electrical reserves:Circuit A has disconnect switches and branch sections, designed to supply the evaporator pump power input within the limits specified in the electrical data table.

• Field connections:All connections to the system and the electrical installations must be in full accordance with all applicable local codes.The Carrier 30GX NEE units are designed and built to ensure conformance with these codes.

• Installation and environmentThe recommendations of standard IEC 60 204-1 (standards issued by the International Electrotechnical Commission) are accepted as compliance with the requirements of the installation directives.The recommendations of standard IEC 60 204-1 (machine safety - electrical machine components - part 1: general regulations) are specifically taken into account, when designing the electrical equipment.Annex B of IEC 60204-1 describes the electrical characteristics used for the operation of the machines.

1. The unit environmental operating conditions(1) are specified below:- outdoor installation*- ambient temperature range: +5°C to +52°C- altitude: ≤ 2000 m- presence of hard solids: significant dust present**- presence of corrosive and polluting substances***: negligible- vibration and shock: negligible- minimum competence level of personnel: instructed personnel****

(1) The required protection level for this class is IP53BW†. All 30GX NEE units are protected to IP54CW† (electrical compartment protected against intrusion of hard solids or liquid splashes) and fulfil this protection condition.

2. Power supply frequency variation: ± 2 Hz.3. The neutral (N) conductor must not be connected directly to the unit (if

necessary use a transformer).4. Overcurrent protection of the power supply conductors is not provided

with the unit.5. The factory-installed disconnect switch(es)/circuit breaker(s) is (are) of a

type suitable for power interruption in accordance with IEC 60947-3.6. The units are designed for connection to TN networks (IEC 60364). For

IT networks the earth connection must not be at the network earth. Provide a local earth, consult competent local organisations to complete the electrical installation.

NOTE: If particular aspects of an actual installation do not conform to the conditions described above, or if there are other conditions which should be considered, always contact your local Carrier representative.

Notes:* The environmental classification is described in standard IEC 60721.

** The control boxes are equipped with filters and cooling fans.During operation the maintenance programme must take into account the dust in the environment.

*** In case of condensation in the control box, ensure tropicalisation of the control boxes (option 22).

**** Trained personnel: Personnel trained by a specialist, to ensure that he/she avoids any possible danger and risk in using electricity (IEC 60364 BA4 – classification of competence of personnel)

† Corresponds to IEC 60529 (IP codes correspond to the protection degree of the unit enclosure).

‡ IEC 60947-3 (low-capacity control and regulation units – Part 3: for a unit, associated disconnect switches, circuit breakers, disconnect buttons and fuses).