r4a // hermetic Scroll compressors orbit Series: Tandem // Trio Improved Performance 60 Hz // ESP-136-5
ORBIT compound compressor assemblies (GSD series) ORBIT Tandem and Trio scroll compressor assemblies consist of two or three compressors, respectively, connected in a parallel configuration and offer advantages over single compressors with equivalent capacity. They are characterized by innovative technical features and very high energy efficiency especially adapted to the annual load characteristics of air conditioning systems and heat pumps. The compressor design has been further optimized for low sound emissions, smooth running and reliability. q Simple, robust and efficient capacity control with high IPLV and ESEER by means of cycling of individual compressors. q Innovative oil equalization system. q Compressors mount directly to solid frame rails for low vibration levels (no spacers required). q One Tandem or Trio piping kit fits for all sizes of the series (for GSD60235 and GSD80182 & GSD80235, the discharge height is +7mm). Compound compressor systems (typical challenges) While many of the standardization, capacity control and IPLV benefits of Tandem and Trio compound systems with scroll compressors are well known, so are some of the application challenges faced by OEM s and system builders. q Highly variable piping configurations from model to model caused by differences in compressor interface points. q Difficulty maintaining oil balance in all phases of unit operation (particularly in heat-pump applications). q Control restrictions (starting/sequencing) imposed by the compressor manufacturer. q Operational challenges in the factory caused by the small and difficult to control restrictor washers needed in conventional piping packages. 2 ESP-136-5
BITZER Advanced Header Technology Our engineers have addressed these challenges and have developed the BITZER Advanced Header Technology. This patent pending technology takes advantage of the unique design characteristics of the ORBIT series compressors. Isolated oil sump design and good miscible PVE oil provide the foundation for BITZER s solution by operating with low oil carry-over rates. Advanced header technology then operates by ensuring that small differences in pressure drop in header tubing do not impact oil balance in low mass-flow situation. Like those found in many air-to-water heat-pumps. BITZER Advanced Header Technology offers concrete advantages and benefits to the OEM customer. q Common Piping A single Advanced Header can cover many different sized Tandem combinations Supports the OEM s lean-production initiatives with less inventory and working capital tied up in piping q No Restrictor Washers Less chance of mistakes in factory assembly q No restriction in start-up, capacity control, or lead-lag control sequences Does not require costly changes to unit firmware q Enables a wide range of creative application solutions for full-load, part-load, or hybrid capacity and efficiency optimization Uneven Tandems Mixed Tandems (normal optimization or low condensing) Mixed or uneven Trios Fixed + variable speed Tandems q Operating characteristics of the Advanced Header Technology Enables tubing to be produced to normal tolerances Enables in-house, or outsourced tubing production without concern for small pressure drop differences ESP-136-5 3
ORBIT 6 even compound assemblies 70 60 60 Capacity (Tons according to ARI 5) 50 30 0 45 39 36 30 30 26 24 15 12 13 GSD601 GSD60137 GSD60154 GSD60182 GSD60235 Single Even Tandems EvenTrio ORBIT 6 uneven Tandem assemblies 50 Capacity (Tons according to ARI 5) 30 0 12 12 13 13 12 13 15 15 15 12 13 15 22 23 25 25 27 28 30 32 33 35 Capacity combinations 4 ESP-136-5
ORBIT 8 even compound assemblies 1 1 1 Capacity (Tons according to ARI 5) 0 90 80 70 60 50 30 0 15 30 45 60 25 50 75 32 64 96 35 70 5 GSD80182 GSD80235 GSD80295 GSD80385 GSD80421 GSD80485 Single Even Tandems Even Trio 80 Single Even Tandems EvenTrio kw ORBIT 8 uneven Tandem assemblies 70 Capacity (Tons according to ARI 5) 60 50 30 0 25 32 25 35 25 32 35 32 35 57 60 65 67 72 75 Capacity combinations ESP-136-5 5
ORBIT 6 + ORBIT 8 Tandem assemblies 70 60 50 Capacity (Tons according to ARI 5) 30 0 12 13 15 25 25 25 25 12 32 32 25 13 32 15 35 37 38 42 44 45 45 45 47 47 48 50 52 55 60 35 32 12 13 35 35 35 15 32 35 Capacity combinations Performance of compound compressor assemblies The performance data of the com pounded compressors corresponds to the sum of the performance data of each of the single compressors. For further information on technical design and performance data of single compressors see BITZER Software and brochures ESP-125 and ESP-135. Other models are available upon request. 6 ESP-136-5
ORBIT 6 Tandem assemblies Technical data Compressor types Displacement with 60 Hz Capacity step Weight Pipe connections ODS ➀ DL Discharge line Suction line CFM % lbs inch inch Even compressor assemblies Assembly kit no. 2 x GSD601VAB 28.2 0 : 50 4 1 3 /8 2 1 /8 2 x GSD60137VAB 31.6 0 : 50 4 1 3 /8 2 1 /8 2 x GSD60154VAB 35.2 0 : 50 4 1 3 /8 2 1 /8 Contact BITZER 2 x GSD60182VAB 41.6 0 : 50 4 1 3 /8 2 1 /8 2 x GSD60235VAB 53.4 0 : 50 416 1 3 /8 2 1 /8 Uneven compressor assemblies GSD601VAB + GSD60137VAB 29.9 0 : 52:48 4 1 3 /8 2 1 /8 GSD601VAB + GSD60154VAB 31.7 0 : 56:44 4 1 3 /8 2 1 /8 GSD601VAB + GSD60182VAB 34.9 0 : 60: 4 1 3 /8 2 1 /8 GSD601VAB + GSD60235VAB.8 0 : 65:35 413 1 3 /8 2 1 /8 GSD60137VAB + GSD60154VAB 33.4 0 : 53:47 4 1 3 /8 2 1 /8 GSD60137VAB + GSD60182VAB 36.6 0 : 57:43 4 1 3 /8 2 1 /8 Contact BITZER GSD60137VAB + GSD60235VAB 42.5 0 : 63:37 413 1 3 /8 2 1 /8 GSD60154VAB + GSD60182VAB 38.4 0 : 54:46 4 1 3 /8 2 1 /8 GSD60154VAB + GSD60235VAB 44.3 0 : 60: 413 1 3 /8 2 1 /8 GSD60182VAB + GSD60235VAB 47.5 0 : 56:44 413 1 3 /8 2 1 /8 Contact BITZER for combinations not shown. Technical data of single compressors see BITZER Software and brochure ESP-125. ➀ Weight including assembly kit Charged with polyvinyl ether oil BVC32 2 x Oil heater (option) 90 W, 115 V/230 V/460 V/575 V ESP-136-5 7
ORBIT 8 Tandem assemblies Technical data Compressor types ➀ Displacement with 60 Hz Capacity step Weight ➁ Pipe connections ODS DL Discharge line Suction line CFM % lbs inch inch Assembly kit no. Version B ➂ Version R ➂ Even compressor assemblies 2 x GSD80295V 68 0 : 50 719 1 5 /8 3 1 /8 2 x GSD80385V 88 0 : 50 727 1 5 /8 3 1 /8 2 x GSD80421V 96 0 : 50 725 1 5 /8 3 1 /8 Contact BITZER 2 x GSD80485VA 1 0 : 50 788 1 5 /8 3 1 /8 Uneven compressor assemblies GSD80295V + GSD80385V 78 0 : 56 : 44 723 1 5 /8 3 1 /8 GSD80295V + GSD80421V 82 0 : 58 : 42 722 1 5 /8 3 1 /8 GSD80295V + GSD80485V 89 0 : 62 : 38 758 1 5 /8 3 1 /8 GSD80385V + GSD80421V 92 0 : 52 : 48 714 1 5 /8 3 1 /8 Contact BITZER GSD80385V + GSD80485V 99 0 : 56 : 44 762 1 5 /8 3 1 /8 GSD80421V + GSD80485V 3 0 : 53 : 47 751 1 5 /8 3 1 /8 Contact BITZER for combinations not shown. Technical data of single compressors see BITZER Software and brochure ESP-135. ➀ Each compressor combination is available in two versions: GSD8...VA = ORBIT 8 optimized for air-cooled systems and reversible chillers GSD8...VW = ORBIT 8 Boreal optimized for systems with low condensing temperature (Combinations with GSD80182V are only available as version A ) ➁ Weight including assembly kit ➂ B = Direct brazing connections R = Rotalock connections Charged with polyvinyl ether oil BVC32. 2 x Oil heater (option) 1 W, 115 V/230 V/460 V/575 V 8 ESP-136-5
ORBIT 6 + ORBIT 8 Tandem assemblies Technical data Compressor types Displacement with 60 Hz Capacity step Weight ➀ DL Discharge line Pipe connections ODS Suction line CFM % lbs inch inch Assembly kit no. GSD601VAB + GSD80295VAB 48.1 0 : 71:29 570 1 5 /8 3 1 /8 GSD601VAB + GSD80385VAB 58.1 0 : 76:24 574 1 5 /8 3 1 /8 GSD601VAB + GSD80421VAB 62.1 0 : 77:23 573 1 5 /8 3 1 /8 GSD60137VAB + GSD80295VAB 49.8 0 : 54:32 570 1 5 /8 3 1 /8 GSD60137VAB + GSD80385VAB 59.8 0 : 74:26 574 1 5 /8 3 1 /8 GSD60137VAB + GSD80421VAB 63.8 0 : 76:25 573 1 5 /8 3 1 /8 GSD60154VAB + GSD80295VAB 51.6 0 : 66:34 570 1 5 /8 3 1 /8 GSD60154VAB + GSD80385VAB 61.6 0 : 78:29 574 1 5 /8 3 1 /8 GSD60154VAB + GSD80421VAB 65.6 0 : 73:27 573 1 5 /8 3 1 /8 Contact BITZER GSD60182VAB + GSD80295VAB 54.8 0 : 62:38 570 1 5 /8 3 1 /8 GSD60182VAB + GSD80385VAB 64.8 0 : 68:32 574 1 5 /8 3 1 /8 GSD60182VAB + GSD80421VAB 68.8 0 : 70:30 573 1 5 /8 3 1 /8 GSD60235VAB + GSD80295VAB 60.7 0 : 56:44 573 1 5 /8 3 1 /8 GSD60235VAB + GSD80385VAB 70.7 0 : 62:38 577 1 5 /8 3 1 /8 GSD60235VAB + GSD80421VAB 74.7 0 : 64:36 576 1 5 /8 3 1 /8 GSD60235VAB + GSD80485VAB 81.7 0 : 67:33 612 1 5 /8 3 1 /8 Contact BITZER for combinations not shown. Technical data of single compressors see BITZER Software and brochures ESP-125 and ESP-135. ➀ Weight including assembly kit Charged with polyvinyl ether oil BVC32 Oil heater (option) ORBIT 6: 90 W, 115 V/230 V/460 V/575 V ORBIT 8: 1 W, 115 V/230 V/460 V/575 V ESP-136-5 9
ORBIT 6 Trio assemblies Technical data Compressor types Displacement with 60 Hz Capacity step Weight ➀ DL Discharge line Pipe connections ODS Suction line CFM % lbs inch inch Assembly kit no. 3 x GSD601VAB 42.3 0 : 66 : 33 625 1 5 /8 2 5 /8 3 x GSD60137VAB 47.4 0 : 66 : 33 625 1 5 /8 2 5 /8 3 x GSD60154VAB 52.8 0 : 66 : 33 625 1 5 /8 2 5 /8 Contact BITZER 3 x GSD60182VAB 62.4 0 : 66 : 33 625 1 5 /8 2 5 /8 Contact BITZER for combinations not shown. Technical data of single compressors see BITZER Software and brochure ESP-125. ➀ Weight including assembly kit Charged with polyvinyl ether oil BVC32 3 x Oil heater (option) 90 W, 115 V/230 V/460 V/575 V Extent of delivery Tandem/Trio assembly kits Piping kit: Suction, discharge and oil equaliz ing tubes and fittings. Rail kit: Compressor mounting hardware, rails and supporting isolation grommets. ESP-136-5
ORBIT 8 Trio assemblies Technical data Compressor types ➀ Displacement with 60 Hz Capacity step Weight ➁ Pipe connections ODS DL Discharge line Suction line CFM % lbs inch inch Assembly kit no. Version B ➂ Version R ➂ 3 x GSD80182VA 63 0 : 66 : 33 50 2 1 /8 3 1 /8 3 x GSD80235V 84 0 : 66 : 33 69 2 1 /8 3 1 /8 3 x GSD80295V 2 0 : 66 : 33 89 2 1 /8 3 1 /8 3 x GSD80385V 132 0 : 66 : 33 13 2 1 /8 3 1 /8 Contact BITZER 3 x GSD80421V 144 0 : 66 : 33 96 2 1 /8 3 1 /8 3 x GSD80485V 165 0 : 66 : 33 18 2 1 /8 3 1 /8 Contact BITZER for combinations not shown. Technical data of single compressors see BITZER Software and brochure ESP-135. ➀ Each compressor combination is available in two versions: GSD8...VA = ORBIT 8 optimized for air-cooled systems and reversible chillers GSD8...VW = ORBIT 8 Boreal optimized for systems with low condensing temperature (Combinations with GSD80182V are only available as version A ) ➁ Weight including assembly kit ➂ B = Direct brazing connections R = Rotalock connections Charged with polyvinyl ether oil BVC32 2 x Oil heater (option) 1 W, 115 V/230 V/460 V/575 V Extent of delivery Tandem/Trio assembly kits Piping kit: Suction, discharge and oil equaliz ing tubes and fittings. Rail kit: Compressor mounting hardware, rails and supporting isolation grommets. ESP-136-5 11
Typical even and uneven Tandem assemblies of ORBIT 6 (subject to change) DL #1 #2 4 6 5 7 8 Note: Shown above is a typical even or uneven Tandem assembly of ORBIT 6 compressors with BITZER Advanced Header Technology. Contact BITZER for dimensional information, other versions, and application information. Typical even and uneven Tandem assemblies of ORBIT 8 (subject to change) DL #1 #2 4 6 5 7 8 Note: Shown above is a typical even or uneven Tandem assembly of ORBIT 8 compressors with BITZER Advanced Header Technology. Contact BITZER for dimensional information, other versions, and application information. Connection positions see p. 15 12 ESP-136-5
Typical uneven Tandem assemblies of ORBIT 6 and ORBIT 8 (subject to change) DL #1 #2 4 6 8 7 5 Note: Shown above is a typical uneven Tandem assembly of ORBIT 6 and ORBIT 8 compressors with BITZER Advanced Header Technology. Contact BITZER for dimensional information, other versions, and application information. Connection positions see p. 15 ESP-136-5 13
Typical even Trio assemblies of ORBIT 6 (subject to change) DL #1 #2 #3 4 7 8 6 5 Note: Shown above is a typical even Trio assembly of ORBIT 6 compressors with BITZER Advanced Header Technology. Contact BITZER for dimensional information, other versions, and application information. 14 ESP-136-5
Typical even of ORBIT 8 Trio assemblies (subject to change) 2 (HP) #3 #2 #1 5 6 4 5 7 8 DL Note: Shown above is a typical even Trio assembly of ORBIT 8 compressors with conventional piping. Contact BITZER for dimensional information, other versions, and application information. Connection positions 2 High pressure (HP) or discharge gas sensor (Schrader) 4 Sight glass 5 Oil service connection 6 Oil equalizing line 7 Mounting position for vibration dampers 8 Mounting position for Tandem and Trio fixing rails Suction line DL Discharge line ESP-136-5 15
Bitzer Kühlmaschinenbau GmbH Eschenbrünnlestraße 15 // 765 Sindelfingen // Germany Tel +49 (0)70 31 932-0 // Fax +49 (0)70 31 932-147 bitzer@bitzer.de // www.bitzer.de Subject to change // 801713 // 03.16