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 BITZERs unique medium temperature optimization technology, system designers have never had so many options to satisfy their customers 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 dont 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 BITZERs 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 GSD8
0182
V
GSD8
0385
V
GSD8
0421
V
ORBIT 8 Nominal Speed ORBIT 8 Variable Speed
Cap
acit
y (T
ons
acc
ord
ing
to
AR
I 540
)
GSD8
0235
V
GSD8
0295
V GSD
8048
5V
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 = 20F
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 20F suction superheat and 15F subcooling .
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 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 20.0 34.4 36.3 14.9 27.1 28.9 EER 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 23.0 39.0 41.5 16.9 30.8 33.1 EER 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 10.3 20.1 21.5 EER 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 11.6 23.0 24.6 EER 13.4 14.3 14.3 32.7 29.0 28.7
Cooling capacity Power consumption Energy Efficiency Ratio EERQo Pe [kBTU] [kW]
ORBIT 8 optimized for air-cooled systems and reversible chillers
ORBIT 8 Boreal optimized for systems with low condensing temperature
Tentative data
Running-in period 72 hours. Power consumption at motor terminals; power consumption at inverter intake depends on
the individually applied inverter model.
Performance data at 65 Hz.
6 ESP-133-1
Technical data
Compressortype
Displace-ment with 35 .. (65) 75 Hz
Speed range Oilcharge
fl.oz
Weight
lbs
DLDischarge
line
inch
SLSuction
line
inch
DLDischarge line
inch
SLSuction line
inch
Motor connec-tion
Rated load Amps(RLA)
Amp.
StartingcurrentLRA(Amp.)
Amp.
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
GSD80295VA(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 85.1 436
GSD80385VA(B/R)2 26 .. 55 35 .. 75 HZ 179 337 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 106.2 578
GSD80421VA(B/R)2 28 .. 52 35 .. 65 HZ 179 336 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 102.8 635
GSD80485VA(B/R)2 32 .. 60 35 .. 65 HZ 179 372 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 128.2 602
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
GSD80385VW(B/R)2 26 .. 55 35 .. 75 HZ 179 337 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 109.6 477
GSD80421VW(B/R)2 28 .. 52 35 .. 65 HZ 179 336 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 106.7 582
GSD80485VW(B/R)2 32 .. 60 35 .. 65 HZ 179 338 1 3/8 1 5/8 1 3/4 12 UNF 2 1/4 12 UNF 111.0 578
Connection thread Version R
Pipe connections ODS Version B
Electrical data
ORBIT 8 optimized for air-cooled systems and reversible chillers
ORBIT 8 Boreal optimized for systems with low condensing temperature
For FI operation special voltage motor 2 is required. Other voltages and electrical supplies upon request.
Charged with polyvinyl ether BVC32.
Weight without shut-off valves.
B = Direct brazing connections, R = Rotalock connections.
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).
Data for direct start. With VSD stepless rise of current up to actual load amps maximum up to rated load amps (RLA).
GSD80182V .. GSD80485
