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VSD Operation

60 Hz // eSP-133-1

OrBit 8 StanDarD anD BOreal: VariaBle SPeeD DriVe

r410a // Hermetic

Scroll comprESSorS

2 ESP-133-1

ORBIT 8 with variable speed drive (VSD)

While the scroll compressors of the ORBIT 8 series for R410A are characterized by high full load and seasonal efficiency, low sound levels, and high reliability, they are also now suitable for use with variable speed drives. VSD capable scroll compressors from BITZER give system designers even more solutions to the challenge of maintaining full load and rating point efficiency levels, while also increasing efficiency at part load points where equipment operates during most of the year. Typical options include downsizing the nominal compressor displacement to a part-load capacity and using the over-speed to achieve full capacity. Using the reduced speed to further reduce noise emissions. Or, taking advantage of reduced condensing pressures associated with part-load operation to operate with reduced power consumption. Coupled with BITZER’s unique medium temperature optimization technology, system designers have never had so many options to satisfy their customer’s needs.

Wide speed range

The ORBIT 8 with VSD capability provides smooth and efficient operation from 35 to 75 Hz*. While many designers use tandem and trio compounds to achieve simple and efficient capacity staging in chiller applications, the VSD capability of the ORBIT 8 provides new options for designers of refrigerant-to-air systems who don’t have the buffering effects of a fluid loop. The fast response of the ORBIT 8 with VSD ensures optimum temperature control.

UVW

M

3 ~

T

TT

T

T

U

I

T1

4

3

6

5

2

ZK

30

454545

555555 606060

757575

HzHz

404040

505050656565

707070

35

808080

* GSD80421 & GSD80485: 35 .. 65 Hz

3ESP-133-1

High cooling capacity

The large capacity range of the ORBIT 8 series is enhanced with the ability to either slow down, or speed up depending on demand. This in creased range can allow users the option to reduce the number, size and variety of compressors stocked in their facility thereby reducing their working capital requirements.

Heat pump application

The ORBIT 8 with VSD capability is an ideal solution for designers looking for high system performance. While a standard scroll compressor must cycle on/off to achieve a building heat load at high evaporating temperatures, a scroll with VSD can easily follow the characteristics. In addition, BITZER provides a large application envelope precisely in the area most needed by heat pumps. Off-setting low refrigerant mass flow rates associated with these conditions is now possible with BITZER’s ORBIT 8 with VSD capability.

IPLV advantage

While ORBIT 8 is known for its optimi zation technology that increases IPLV from 5 to 15%, these benefits are further enhances with the application of VSD technology. Designers can take advantage of the lower condensing pressures associated with part-load operation and further reduce their power consumption.This is in particular of advantage with refrigerant-to-air systems but also for chillers with two compressors (one with VSD) for stepless modulation of the required cooling demand.

50

40

30

20

10

40 GSD8018

2V

GSD8038

5V

GSD8042

1V

ORBIT 8 Nominal Speed ORBIT 8 Variable Speed

Cap

acit

y (T

ons

acc

ord

ing

to

AR

I 540

)

GSD8023

5V

GSD8029

5VGSD80

485V

Hea

t P

ump

Cap

acit

y [B

tu/h

]

Typical Heat Pump Capacity vs. Heating Load

Ambient Temperature [°F] Heat Load Standard Scroll Compressor ORBIT 8 Variable Speed

SupplementalHeat required

Bivalent Point

IPLV for Refrigerant-to-Air Systems

Btu

/(W

x h

)

25

20

15

Standard

Variable Speed

+15

% S

easo

nal

Ene

rgy

Eff

icie

ncy

4 ESP-133-1

R410A

R410A160

140

120

100

6060400 20

SDT [°F]

SST [°F]

80

-20

SH = 20°F

35 Hz

Application Limits

BITZER ORBIT 8 with VSD

BITZER ORBIT 8 Boreal with VSD

SST Saturated suction tempeature (°F) SH Suction superheat (°F) SDT Saturated discharge temperature (°F)

35 Hz

Application after consultation with BITZER

5ESP-133-1

Performance data

Performance data are based on ARI 540 conditions.Saturated suction and discharge temperatures correspond to “dew point” conditions (saturated vapor).

Performance data based on 20°F suction superheat and 15°F subcooling ➀.

Compressor type SST (°F) 45 45 45 45 45 45 45 45 45

SDT (°F) 130 130 130 120 120 120 100 100 100Frequency (Hz) 35 60 75 (65) 35 60 75 (65) 35 60 75 (65)

R410A ➂

Q 86 181 213 96 194 230 115 220 263

GSD80182VA P 9.4 16.7 20.0 8.0 14.9 17.8 5.8 11.9 14.2

EER 9.1 10.8 10.6 12.0 13.1 12.9 19.8 18.4 18.4

Q 118 238 285 132 257 307 157 293 350

GSD80235VA P 13.4 22.9 27.2 11.4 20.1 24.2 8.3 15.6 19.4

EER 8.8 10.4 10.5 11.5 12.8 12.7 19.0 18.8 18.1

Q 152 297 362 170 322 392 203 368 448

GSD80295VA P 17.5 28.2 34.9 14.9 24.8 30.9 10.8 19.3 24.5

EER 8.7 10.5 10.4 11.5 13.0 12.7 18.8 19.1 18.3

Q 204 386 474 225 417 510 262 474 578

GSD80385VA P 21.4 35.5 43.9 18.3 31.4 39.3 13.6 24.9 31.8

EER 9.5 10.9 10.8 12.3 13.3 13.0 19.2 19.0 18.2

Q 221 419 446 245 453 481 288 517 549

GSD80421VA P 23.5 38.9 40.8 ➂ 20.0 34.4 36.3 ➂ 14.9 27.1 28.9 ➂EER 9.4 10.8 10.9 12.3 13.2 13.3 19.4 19.1 19.0

Q 251 473 504 282 513 545 331 586 622

GSD80485VA P 27.2 44.2 46.8 ➂ 23.0 39.0 41.5 ➂ 16.9 30.8 33.1 ➂EER 9.2 10.7 10.8 12.3 13.1 13.1 19.7 19.0 18.8

SST (°F) 45 45 45 45 45 45

Compressor type SDT (°F) 115 115 115 80 80 80Frequency (Hz) 35 60 75 (65) 35 60 75 (65)

Q 144 275 318 186 339 395

GSD80235VW P 11.0 19.1 23.2 5.8 11.6 14.4

EER 13.0 14.4 13.7 31.9 29.2 27.3

Q 181 332 400 233 410 495

GSD80295VW P 13.7 23.2 29.1 7.3 13.8 18.1

EER 13.1 14.3 13.8 32.1 29.7 27.4

Q 227 482 516 295 594 635

GSD80385VW P 17.6 34.8 37.9 9.5 21.8 24.1

EER 12.9 13.8 13.6 31.0 27.3 26.4

Q 249 467 494 328 580 615

GSD80421VW P 19.0 32.7 34.7 ➂ 10.3 20.1 21.5 ➂EER 13.1 14.3 14.2 31.7 28.8 28.5

Q 286 534 562 380 668 706

GSD80485VW P 21.3 37.3 39.4 ➂ 11.6 23.0 24.6 ➂EER 13.4 14.3 14.3 32.7 29.0 28.7

Cooling capacity Power consumption Energy Efficiency Ratio EERQo Pe ➁

[kBTU] [kW]

ORBIT 8 optimized for air-cooled systems and reversible chillers

ORBIT 8 Boreal optimized for systems with low condensing temperature

Tentative data

➀ Running-in period 72 hours.

➁ Power consumption at motor terminals; power consumption at inverter intake depends on the individually applied inverter model.

➂ Performance data at 65 Hz.

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Technical data

Compressortype

➀

Displace-ment with 35 .. (65) 75 Hz

Speed range Oilcharge

➁

fl.oz

Weight➂

lbs

DLDischarge

line

inch

SLSuction

line

inch

DLDischarge line

inch

SLSuction line

inch

Motor connec-tion

➀

Rated load Amps(RLA)

Amp. ➄

StartingcurrentLRA(Amp.)

Amp. ➅

GSD80182VA(B/R)2 12 .. 26 35 .. 75 HZ 179 320 1 3/8 1 5/8 1 3/4 – 12 UNF 2 1/4 – 12 UNF

208.

.230

V/3

/60

Hz

200

V/3

/50

Hz

57.6 342

GSD80235VA(B/R)2 16 .. 34 35 .. 75 HZ 179 326 1 3/8 1 5/8 1 3/4 – 12 UNF 2 1/4 – 12 UNF 71.0 385





GSD80235VW(B/R)2 16 .. 34 35 .. 75 HZ 179 326 1 3/8 1 5/8 1 3/4 – 12 UNF 2 1/4 – 12 UNF

208.

.230

V/3

/60

Hz

200

V/3

/50

Hz

68.8 358

GSD80295VW(B/R)2 20 .. 43 35 .. 75 HZ 179 333 1 3/8 1 5/8 1 3/4 – 12 UNF 2 1/4 – 12 UNF 79.4 418




Connection thread Version “R” ➃

Pipe connections ODS Version “B” ➃

Electrical data

ORBIT 8 optimized for air-cooled systems and reversible chillers

ORBIT 8 Boreal optimized for systems with low condensing temperature

➀ For FI operation special voltage motor 2 is required. Other voltages and electrical supplies upon request.

➁ Charged with polyvinyl ether BVC32.

➂ Weight without shut-off valves.

➃ B = Direct brazing connections, R = Rotalock connections.

➄ For the selection of contactors, cables and fuses the rated load amps (RLA) and the max. power consumption must be considered (“Electrical data”). RLA (MCC/1.56).

➅ Data for direct start. With VSD stepless rise of current up to actual load amps – maximum up to rated load amps (RLA).

GSD80182V .. GSD80485V: Oil heater (option) 140 W/115 V, 230 V, 460 V, 575 V.

CFM

For dimensional drawings see brochure ESP-135.

7ESP-133-1

Notes

Subject to change // 12.2011

Bitzer Kühlmaschinenbau GmbHEschenbrünnlestraße 15 // 71065 Sindelfingen // Germany

Tel +49 (0)70 31 932-0 // Fax +49 (0)70 31 932-147 [email protected] // www.bitzer.de