Danfoss DSH090 Application Manual Download Page 51

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Dilution Chart - DSH240 to DSH600 R410A/ R452B / R454B

Figure 56: Dilution Chart (reference at 20°C / 68°F ambient temperature)

12.5

7.5

-25

-30

-20

-15

-10

-5

-13

-22

-4

2.5

22.5

13.5

4.5

CC-000026

Evaporating Temperature (°F)

Safe Area

Unsafe Area (60 sec max per hour)

Evaporating Temperature (°C)

Oil Super

heat (K

)

Oil Super

heat (°F)

Manage off cycle migration

Off -cycle refrigerant migration happens:

• when the compressor is located at the coldest part of the installation, refrigerant vapor condenses in the

compressor.

• or directly in liquid-phase by gravity or pressure difference. When the compressor restarts, the refrigerant diluted

in the oil, or stored in evaporator, generates poor lubrication conditions, and may reduce bearings life time. In

extreme situations, this leads to liquid slugging that can damage the compressor scroll set.

Requirement

• Compressor can tolerate occasional flooded start, but it should remain exceptional situation and unit design must

prevent that this situation happen at each start.

• Right after start, liquid refrigerant must not flow massively to compressor

• The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and

extreme dilution at start.

System evaluation

Use the table below in relation with the system charge and the application to quickly define necessary safeties to

implement.

Table 31: System charge

Application

BELOW charge limit

ABOVE charge limit

All

Ensure tightness between condenser & evaporator when system is OFF

• Thermostatic expansion Valve (TXV) , Liquid Line Solenoid Valve LLSV strongly recommended

• Electronic expansion valve (EXV) must close when system stop including in power shut down situation

Non split

No test or additional safeties required

• Crankcase heater

Split

Since each installation is unique, refrigerant charge may vary

• Crankcase heater

• Liquid Line Solenoid Valve+ pump-down cycle

AB288965961751en-001402 | 51

Scroll compressors, DSH090 to DSH600 | Application

Summary of Contents for DSH090

Page 1: ...www danfoss com Application Guide Scroll compressors DSH090 to DSH600 R410A R454B R452B 50Hz 60Hz ...

Page 2: ...06 42 EC 10 Pressure equipment directive 2014 68 EU 10 Internal free volume 10 Refrigerants 11 General Information 11 R410A 11 R452B 11 R454B 11 Technical specification 12 50 60 Hz data Single compressor 12 Performance data 13 R410A 50 60 Hz Single compressor 13 R452B 50 60 Hz Single compressor 14 R454B 50 60 Hz Single compressor 15 Sound and vibration data 16 Compressor sound radiation Single 16 ...

Page 3: ...tion 45 Manage Operating envelope 46 Manage superheat 48 Manage off cycle migration 51 Power supply and electrical protection 54 Control logic 56 Reduce moisture in the system 58 Assembly line procedure 59 Commissioning 62 Dismantle and disposal 63 Packaging 64 Single pack 64 Industrial pack 64 Ordering 65 Single pack 65 Industrial pack 66 Accessories and Spare parts 68 Solder sleeve adapter set 6...

Page 4: ...rature protection 70 Mounting hardware 70 Lubricant 70 Terminal boxes covers and T block connectors 70 Acoustic hoods 71 Miscellaneous 71 Tandem kits 71 Trio kits 72 Updates 73 Online support 74 Scroll compressors DSH090 to DSH600 Contents Danfoss Climate Solutions 2022 10 AB288965961751en 001402 4 ...

Page 5: ...is icon indicates instructions to avoid reliability risk The purpose of this guideline is to help customers qualify compressors in the unit You are strongly advise to follow these instructions For any deviation from the guidelines please contact Danfoss Technical Support In any case Danfoss accepts no liability as a result of the improper integration of the compressor into the unit by the system m...

Page 6: ...optimal motor cooling and higher resistance to liquid slugging Organ pipe masters oil circulation in manifold configuration Introduction Product description Danfoss scroll compressor DSH for R410A R454B and R452B is available as single compressor and can be assembled in tandem or trio combinations DSH series scroll compressor benefit from an improved design to achieve the highest efficiency and in...

Page 7: ...nfiguration Cut Away DSH240 600 Figure 2 Cut Away DSH240 600 How do IDVs work Figure 3 Intermediate Discharge Valve IDV Danfoss Intermediate Discharge Valves IDVs are located close to the discharge side of the compressor They reduce excessive compression of refrigerant under part load conditions while maintaining the same cooling capacity The IDVs open when discharge pressure falls below the built...

Page 8: ...he compressor nameplate Code numbers for ordering are listed in section Ordering Family lubricant refrigerant DSH Scroll POE lubricant R410A and R454B R452B according to version Motor protection A Electronic module 24V AC R410A only B Electronic module 110 240V R410A only P Electonic module 110 240V R410A R454B R452B X Electonic module 24V AC R410A R454B R452B L Internal overload protector R410A R...

Page 9: ... 11 1991 2011 B February B 1992 2012 C March C 1993 2013 D April D Wuqing China 25 1994 2014 E May E 1995 2015 F June F 1996 2016 G July G 1997 2017 H August H 1998 2018 J September J 1999 2019 K October K 2000 2020 L November L 2001 2021 M December M 2002 2022 N 2003 2023 P 2004 2024 Q 2005 2025 R 2006 2026 S 2007 2027 T 2008 2028 U 2009 2029 V Danfoss Climate Solutions 2022 10 AB288965961751en 0...

Page 10: ...D R452B R454B III III IV Maximum Minimum temperature Ts 35 C Ts 55 C 31 F Ts 131 F 35 C Ts 52 C 31 F Ts 125 6 F 35 C Ts 52 C 31 F Ts 125 6 F Maximum allowable pressure Low side Ps R410A 33 3 bar g R452B and R454B 31 2 bar g R410A 483 psig R452B and R454B 453 psig 31 2 bar g 451 psig 31 2bar g 451psig Maximum allowable pressure High side Ps 48 7 bar g 706 psig 48 7 bar g 706 psig 48 7 bar g 706 psi...

Page 11: ...ing Potential GWP 676 AR5 698 AR4 It is a near azeotropic mixture with a temperature glide around 1 K R452B has very close capacities versus R410A and due to its very limited discharge temperature difference it appears today as the best candidate for a direct drop in of R410A R452B is classified A2L with low flammability properties Please refer to European regulations and directives about the use ...

Page 12: ...27 3 3 112 69 152 DSH184 15 170 3 10 39 29 6 1045 35 8 1264 3 6 122 71 5 158 DSH240 20 227 6 13 89 39 6 1398 47 8 1688 6 1 206 114 251 DSH295 25 276 2 16 85 48 1 1699 58 2048 6 1 206 117 258 DSH381 30 345 21 05 60 2119 72 3 2553 6 1 206 162 357 DSH485 40 442 6 27 01 77 2719 92 9 3281 6 1 206 176 388 DSH600 50 553 33 75 96 2 3397 116 1 4100 6 1 206 215 474 1 Displacement at nominal speed 2900rpm at...

Page 13: ...0 41510 141631 12 81 3 24 11 06 DSH161 13 0 47222 161122 14 77 3 20 10 91 DSH184 15 0 53157 181371 16 44 3 23 11 03 DSH240 20 0 71760 244852 22 46 3 20 10 90 DSH295 25 0 87610 298934 26 96 3 25 11 09 DSH381 30 0 110116 375726 34 41 3 20 10 92 DSH485 40 0 143956 491192 43 03 3 35 11 42 DSH600 50 0 175344 598291 53 80 3 26 11 12 NOTE TR Ton of Refrigeration COP Coefficient Of Performance EER Energy ...

Page 14: ... 46938 160152 13 84 3 39 11 57 DSH184 52181 178040 15 81 3 30 11 26 DSH240 70756 241427 21 4 3 31 11 30 DSH295 86418 294866 25 5 3 39 11 57 DSH381 105020 358339 32 5 3 23 11 02 DSH485 138878 473866 40 92 3 39 11 58 DSH600 169160 577191 50 72 3 34 11 38 NOTE TR Ton of Refrigeration COP Coefficient Of Performance EER Energy Efficiency Ratio Standard rating conditions For 50 Hz Evaporating temperatur...

Page 15: ... 45966 156834 13 79 3 33 11 38 DSH184 51267 174922 15 36 3 34 11 39 DSH240 68133 232478 20 81 3 27 11 17 DSH295 83489 284872 24 94 3 35 11 42 DSH381 105020 358339 32 50 3 23 11 02 DSH485 137206 468160 40 43 3 39 11 58 DSH600 167995 573216 50 26 3 34 11 41 NOTE TR Ton of Refrigeration COP Coefficient Of Performance EER Energy Efficiency Ratio Standard rating conditions For 50 Hz Evaporating tempera...

Page 16: ...coustic hood available for DSH485 code 3 1 Attenuation given with acoustic hood 2 For DSH381code 3 3 No acoustic hood available for DSH485 code 3 Table 12 Compressor sound radiation R452B R454B Max DGT 150 C Compressor model 50 Hz 60 Hz Acoustic hood code number Sound power dB A Attenuation dB A 1 Sound power dB A Attenuation dB A 1 Body Top DSH090 73 4 76 4 120Z0490 120Z0493 DSH105 75 4 78 5 120Z...

Page 17: ...e vibrations that propagate into the surrounding parts and structure The vibration level of a DSH compressor alone does not exceed 120µm peak to peak for DSH090 to DSH184 and 154µm peak to peak for DSH240 to DSH600 However when system structure natural frequencies are close to running frequency vibrations are amplified due to resonance phenomenon A high vibration level is damageable for piping rel...

Page 18: ...60 65 70 40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 40 31 22 13 4 5 14 23 32 41 50 59 68 77 86 41 50 59 68 77 86 95 104 113 122 131 140 149 158 S H 5 K 9 F S H 30 K 54 F CC 000040 Figure 6 R410A DSH240 to DSH600 Condensing temperature C Evaporating temperature C Evaporating temperature F Condensing temperature F 5 10 15 20 25 30 35 40 45 50 55 60 65 70 40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 40 3...

Page 19: ... 158 S H 30 K 54 F S H 5 K 9 F CC 000039 Figure 8 R452B R454B DSH120 to DSH184 Max DGT 150 C Condensing temperature C Evaporating temperature C Evaporating temperature F Condensing temperature F 5 10 15 20 25 30 35 40 45 50 55 60 65 70 40 35 30 25 20 15 10 5 0 5 10 15 20 25 30 40 31 22 13 4 5 14 23 32 41 50 59 68 77 86 41 50 59 68 77 86 95 104 113 122 131 140 149 158 S H 5 K 9 F S H 30 K 54 F CC 0...

Page 20: ...bar g 1 7 15 5 1 7 14 4 psig 25 225 25 209 Maximum high pressure safety switch setting bar g 46 1 43 1 psig 669 625 Minimum low pressure safety switch setting bar g 1 5 1 5 psig 22 22 Minimum low pressure pump down switch setting bar g 1 5 bar below nominal evap pressure with minimum of 1 7 bar g psig 22 psi below nominal evap pressure with minimum of 25 psig High and low pressure protection Low p...

Page 21: ... 06 230 9 06 1 8560246 DSH184 4 3 7 9 243 9 57 558 21 97 299 11 77 524 20 63 180 201 7 09 7 91 230 9 06 230 9 06 1 8560234 8560235 DSH240 3 4 7 9 320 12 6 653 25 71 302 11 87 618 24 33 427 16 81 371 14 61 371 14 61 2 8556208 DSH295 3 4 7 9 320 12 6 653 25 71 302 11 87 618 24 33 427 16 81 371 14 61 371 14 61 2 8556208 DSH381 4 7 9 333 13 11 726 28 58 302 11 87 667 26 26 429 16 89 371 14 61 371 14 6...

Page 22: ...0 9 45 242 9 53 1 8560114 DSH251U 3 4 7 9 DSH090 DSH161 850 33 46 386 15 2 565 22 24 240 9 45 242 9 53 1 8556233 DSH260U 3 4 7 9 DSH140 DSH120 850 33 46 386 15 2 565 22 24 240 9 45 242 9 53 1 8556230 DSH274U 4 3 7 9 DSH090 DSH184 850 33 46 386 428 15 2 16 85 580 22 83 240 9 45 242 9 53 1 8556232 DSH281U 3 4 7 9 DSH161 DSH120 850 33 46 386 15 2 565 22 24 240 9 45 242 9 53 1 8556230 DSH280E 3 4 7 9 ...

Page 23: ... 4 7 9 DSH240 DSH485 1025 40 35 546 21 5 774 30 5 535 21 06 211 8 31 3 8556207 DSH725U 3 DSH240 DSH485 1025 40 35 563 22 17 774 30 5 535 21 06 211 8 31 3 8556207 DSH760E 4 7 9 DSH381 DSH381 1025 40 35 527 20 75 774 30 5 535 21 06 211 8 31 4 8556223 DSH760E 3 DSH381 DSH381 1025 40 35 576 22 68 774 30 5 535 21 06 211 8 31 4 8556223 DSH780U 4 7 9 DSH295 DSH485 1025 40 35 546 21 5 774 30 5 540 21 26 2...

Page 24: ...11 8 31 8 8556217 DSH971T 4 7 9 2 DSH295 DSH381 1524 60 545 21 46 774 30 5 535 21 06 211 8 31 9 8556317 DSH1140T 4 7 9 3 DSH381 1467 57 76 545 21 46 774 30 5 535 21 06 211 8 31 9 8556229 DSH1140T 3 3 DSH381 1467 57 76 594 23 39 774 30 5 535 21 06 211 8 31 9 8556229 DSH1245T 4 7 9 2 DSH381 DSH485 1520 59 84 573 22 56 774 30 5 535 21 06 211 8 31 9 8556234 DSH1245T 3 2 DSH381 DSH485 1520 59 84 594 23...

Page 25: ... NOTE Trio to be achieved by assembly of individual compressors Danfoss Climate Solutions 2022 10 AB288965961751en 001402 25 Scroll compressors DSH090 to DSH600 Dimensions ...

Page 26: ...1 3 4 Rotolock 2 1 4 Rotolock 2 1 4 Rotolock 2 1 4 Oil drain connection None Female Flare incorporating a Schrader valve Low pressure gauge port Shrader Male Flare incorporating a Schrader valve Outline drawing 1 1 2 2 2 Design compressor mounting General requirements Compressors used in single applications must be mounted with flexible grommets Compressors used in parallel applications must be mo...

Page 27: ...or the DSH090 105 120 140 161 184 compressors is HM8 40 This bolt must be tightened to a torque of 15Nm Figure 24 Rubber grommets Part 2 3 4 5 6 and 7 are delivered along with compressor Single requirements DSH240 295 381 485 600 mounting To be used in single applications an additional accessory including flexible grommets is necessary kit 8156138 The grommets must be compressed until contact betw...

Page 28: ...ers are included in tandem accessory kits The rubber grommets are supplied with compressor For more details about parallel mounting feet please see parallel unit outline drawing Figure 27 DSH180E to DSH368E and DSH260U 281U 301U mounting Manifolding requirements DSH195U 210U 230U 251U 274U 289U 304U 324U 345U mounting The compressors must be mounted with rigid mounting spacers on rails Rubber grom...

Page 29: ...U 304U 345U 7 mm DSH274U 14 mm Tandem requirements DSH420T 483T 552T The compressors must be mounted with rigid mounting spacers on rails Rubber grommets and spacers must be installed below the rails The rigid mounting spacers and rubber grommets are included in tandem accessory kits Figure 28 DSH420T 483T 552T mounting Tandem requirements DSH360X 424X 456X 479X 565X mounting The large compressor ...

Page 30: ...d Φ10mm Tightening torque 50Nm Tightening torque 55Nm 5mm 0 2inch thickness Tightening torque 15Nm 4mm 0 16inch thickness Supplied with the compressor Included in manifolding kit Not supplied Tandem requirements DSH482 to DSH1800 mounting except DSH565 For parallel mounting the compressors can be mounted directly on the rails Rubber grommets and spacers must be installed below the rails These part...

Page 31: ...ee section Manage oil in the circuit Avoid condensed liquid refrigerant from draining back to the compressor when stopped discharge piping upper loop For validation tests see section Manage off cycle migration Piping should be designed with adequate three dimensional flexibility to avoid excess vibration It should not be in contact with the surrounding structure unless a proper tubing mount has be...

Page 32: ... Tubings according to specific outline drawings indicated in the following table Manifolding accessory kit Compressors Suction and oil equalization piping drawings must be respected diameters minimum straight lengths Suction washer position Depending on manifold configuration it is essential to equalize the pressure of compressor sumps Hence a suction washer must be added on certain compressors ac...

Page 33: ...80E DSH140 DSH140 1 5 8 1 3 8 1 1 8 8560114 Left Not needed 120Z0634 Right DSH289U DSH105 DSH184 1 5 8 1 3 8 1 1 8 8556231 Left 23mm 0 91inch Cp1 120Z0693 Right 23mm 0 91inch Cp1 DSH301U DSH161 DSH140 1 5 8 1 3 8 1 1 8 8556230 Left 27 5mm 1 08 inch Cp1 120Z0692 Right 26mm 1 02 inch Cp1 DSH304U DSH120 DSH184 1 5 8 1 3 8 1 1 8 8556231 Left 24mm 0 94inch Cp1 120Z0694 Right 24mm 0 94inch Cp1 DSH322E D...

Page 34: ...odels Table 20 Trio models Trio model Composition Cp1 Cp2 Cp3 Suction Dis charge Oil equaliza tion Outline drawing number Suction from Washer inner di ameter Washer in suction of Trio kit code DSH420T DSH140 DSH140 DSH140 2 1 8 1 3 8 1 1 8 8560134 Left 26mm 1 02 inch Cp1 120Z0714 25mm 0 98 inch Cp3 Right 26mm 1 02 inch Cp1 24mm 0 94inch Cp3 DSH483T DSH161 DSH161 DSH161 2 1 8 1 3 8 1 1 8 8560134 Le...

Page 35: ...0E to DSH368E The oil level is balanced by a pipe of 1 1 8 oil equalization line In order ensure best oil balance the organ pipe need to be mounted inside the oil equalization port as indicated on below picture To connect the equalization line on rotolock connections the organ pipe adaptor and teflon gasket are included in the tandem kit must be used The organ pipe needs to be installed in the dir...

Page 36: ...y kit must be used Organ pipe Tightening torque 100Nm Tightening torque 145Nm Supplied with the compressor Included in tandem kit Oil equalization design DSH482 535 DSH590 to DSH1800 The oil level is balanced by a pipe of 1 3 8 or 1 5 8 To connect the equalization line on rotolock connections the adaptor sleeves included in the tandem or trio accessory kit must be used Figure 39 DSH482 535 DSH590 ...

Page 37: ...al box s knockouts to against accidental contact with electrical parts inside DSH090 105 120 140 161 184 except DSH140 161 code3 DSH184 code3 7 9 The terminal box is provided with a Ø 25 5mm φ1 inch ISO25 and a Ø 29mm φ1 14 PG21 knockouts Figure 40 Wiring connections for DSH090 105 120 140 161 except DSH140 161 code3 DSH140 161 code3 DSH184 code 3 7 9 DSH184 code4 NAM code The terminal box is prov...

Page 38: ...h UL 1 1 2 conduit Ø 43 7mm φ 1 72inch UL 1 1 4 conduit Ø 34 5mm φ 1 36 inch UL 1 conduit Ø 40 5mm φ 1 59inch ISO40 Ø 32 2mm φ 1 27inch ISO32 Ø 25 5 mm φ 1 inch ISO25 Ø 25 5 mm φ 1 inch ISO25 The 4 others knockouts are as follows Ø 22 5mm φ 0 89inch PG16 UL 1 2 Ø 16 5mm φ 0 65inch ISO16 x2 Ø 20 7mm φ 0 81inch ISO20 or PG13 5 x2 Figure 42 Wiring connections for DSH240 295 381 485 600 except code 3 ...

Page 39: ... φ 0 65 inch ISO16 Ø 25 5mm φ 1inch ISO25 20mm φ 0 79inch ISO20 or PG13 5 Ø 22 5mm φ 0 89inch PG16 UL 1 2 Ø 25 5mm φ 1inch ISO25 x2 Figure 44 Wiring connections for DSH485 code 3 Motor protection module The motor protection modules come preinstalled within the terminal box Phase sequence protection connections and thermistor connections are pre wired and should not be removed The module must be co...

Page 40: ...numeral level of protection against contact and foreign objects 5 Dust protected Second numeral level of protection against water 4 Protection against water splashing Terminal box temperature The temperature inside the terminal box must not exceed 70 C 158 F Consequently if the compressor is installed in an enclosure precautions must be taken to avoid that the temperature around the compressor and...

Page 41: ...2 DSH120 160 25 29 0 72 DSH140 168 26 33 0 62 DSH161 177 29 37 0 57 DSH184 239 36 41 0 57 DSH240 277 41 58 0 42 DSH295 329 47 69 0 36 DSH381 424 60 88 0 24 DSH485 475 83 109 0 19 DSH600 566 99 122 0 16 LRA Locked Rotor Amp Locked Rotor Amp value is the higher average current as measured on mechanically blocked compressors tested under nominal voltage The LRA value can be used as a rough estimation...

Page 42: ...the Max Operating Current value MOC When the motor temperature is too high then the internal protector will trip When the current is too high the thermal magnetic motor circuit breaker will trip before the internal protection therefore offering possibility of manual reset DSH240 to DSH600 Compressor models DSH240 295 381 485 600 are delivered with a pre installed motor protection module inside the...

Page 43: ...ss from the suction to the discharge Although reverse rotation is not destructive for these models it should be corrected as soon as possible Repeated reverse rotation over 24 hours may have negative impact on the bearings Reverse rotation will be obvious to the user as soon as power is turned on the compressor will not build up pressure the sound level will be abnormally high and power consumptio...

Page 44: ...ut contact M1 M2 open The red LED on the module will show the following blink code Approximate The lockout may be cancelled by resetting the power mains disconnect L N for approximately 5 seconds For more detailed information see Instructions for electronic module AN160986418236 Scroll compressors DSH090 to DSH600 Electrical connections Danfoss Climate Solutions 2022 10 AB288965961751en 001402 44 ...

Page 45: ...compressors running for 6 hours for trio compressor running fol low the running sequence 1 2 3 2hrs 1 2 2hrs 2 3 2hrs 1 3 2hrs For reversible system perform test in both heating and cooling mode Oil level must be visible or full in the sight glass when the compressors are running and when all compressors of the circuit are stopped Top up with oil generally 3 of the total system refrigerant charge ...

Page 46: ...ss and mass brackets metal sheet thickness or shape Manage Operating envelope The Operating envelope for DSH scroll compressors guarantees reliable operations of the compressor for steady state operation Steady state operation envelope is valid for a suction superheat within 5K to 30K range at nominal Voltage High and low pressure protection Low pressure LP and high pressure HP safety switches mus...

Page 47: ...discharge temperature protection an external protection is required This external protection device can be a thermostat or a temperature sensor The discharge gas temperature protection must trip the power supply when it reaches the setting point to protect the compressor from overheating For R410A application the discharge gas protection should be set to open at a maximum discharge gas temperature...

Page 48: ...grated into control logic CC 000192 Manage superheat During normal operation refrigerant enters the compressor as a superheated vapor Liquid flood back occurs when a part of the refrigerant entering the compressor is still in liquid state Liquid flood back can cause oil dilution and in extreme situations lead to liquid slugging that can damage the compressor Requirement In steady state conditions ...

Page 49: ...mperature Oil superheat shall not be more than 60 sec per hour below the safe limit defined in the Dilu tion Chart see Dilution Chart DSH240 to DSH600 R410A R452B R454B Check defrost logic In re versible systems the de frost logic can be worked out to limit liquid flood back effect for more de tails see Control logic Add a suction accumulator 1 1 Suction accumulator offers protection by trapping t...

Page 50: ...F Oil Superheat K Oil Superheat F CC 000024 Dilution Chart DSH090 to DSH184 R452B R454B Figure 55 Dilution Chart reference at 20 C 68 F ambient temperature 22 5 25 20 17 5 15 12 5 10 7 5 5 25 30 20 15 10 5 0 5 10 15 20 25 13 22 4 5 14 23 32 41 50 59 68 77 2 5 0 40 5 45 36 31 5 27 22 5 18 13 5 9 4 5 0 Unsafe Area 60 sec max per hour Safe Area Evaporating Temperature C Evaporating Temperature F Oil ...

Page 51: ... flooded start but it should remain exceptional situation and unit design must prevent that this situation happen at each start Right after start liquid refrigerant must not flow massively to compressor The charge limit is a threshold beyond some protective measures must be taken to limit risk of liquid slugging and extreme dilution at start System evaluation Use the table below in relation with t...

Page 52: ...0 to DSH600 Danfoss 9850380 The heater must be turned on whenever all the compressors are off Crankcase heater accessories are available from Danfoss see section Accessories and Spare parts Liquid line solenoid valve LLSV A Liquid line solenoid valve LLSV is used to isolate the liquid charge on the condenser side thereby preventing against charge transfer to the compressor during off cycles The qu...

Page 53: ...6 DSH280E 2 DSH140 14 31 DSH289U DSH105 DSH184 12 26 DSH301U DSH161 DSH140 14 31 DSH304U DSH120 DSH184 12 26 DSH322E 2 DSH161 14 31 DSH324U DSH140 DSH184 14 31 DSH345U DSH161 DSH184 14 31 DSH368E 2 DSH184 14 31 DSH360X DSH120 DSH240 14 31 DSH424X DSH184 DSH240 14 31 DSH456X DSH161 DSH295 14 31 DSH479X DSH184 DSH295 14 31 DSH565X DSH184 DSH381 14 31 DSH482E 2 DSH240 21 46 DSH535U DSH240 DSH295 21 4...

Page 54: ...0 105 120 140 161 184 phase sequence protection is strongly recommended Compressor models DSH240 295 381 485 600 are delivered with a pre installed motor protection module inside the terminal box that must be powered on HP safety switch DGT only for DSH090 to DSH184 and electronic module relay output M1 M2 only for DSH240 to DSH600 must be wired in the safety chain Other safety devices such as LP ...

Page 55: ... KM T2 M T1 T3 DGT UC CCH CC 0041 Figure 61 Compressor model DSH485 except code 3 and model DSH600 CC SS LPS KM F1 F1 HP L1 L3 L2 KM DGT MPM CB UC M S CCH T2 T1 T3 CC 000020 Danfoss Climate Solutions 2022 10 AB288965961751en 001402 55 Scroll compressors DSH090 to DSH600 Application ...

Page 56: ...cation of compressor parts the settings must ensure that the compressor start up time is always less than 0 5 seconds Ramp down must be set to minimum to ensure proper discharge valve closing In case of use with R454B or R452B make sure that the softstarter selected is compatible with A2L refrigerants Control logic Safety control logic requirements Table 36 Safety control logic requirements Safeti...

Page 57: ...eat management to avoid liquid flood back In trio system after running long time in same state with 2 or 3 compressors 1 2 3 or 1 2 2 3 or 3 1 oil unbalance may appears A function can be implemented in control logic to stop all compressors during one minute every two hours in order to balance oil Time and sequence can be fine tuned during Oil balancing test in section Manage oil in the circuit Def...

Page 58: ... tests described in sections Manage superheat and Operating envelope data Pump down logic recommendations Pump down is initiated prior to shutting down the last compressor on the circuit by de energizing a liquid line solenoid valve or closing electronic expansion valve When suction pressure reached the cut out pressure compressor is stopped and liquid solenoid valve or electronic expansion valve ...

Page 59: ...olding charge between 0 3bar 4 psi and 0 7bar 10psi and is sealed with elastomer plugs Respect the following sequence to avoid discharge check valve gets stuck in open position Remove the suction plug first Remove the discharge plug afterwards An opened compressor must not be exposed to air for more than 20 minutes to avoid moisture is captured by the POE oil Handling Each Danfoss DSH scroll compr...

Page 60: ...ould be less than 2 minutes to avoid NRVI damages if any To enhance the resistance to rust a varnish on the connection is recommended DSH compressors connectors are made of steel copper coated which benefit to protect against corrosion and facilitate adhesion during brazing operation As per standards practice in the refrigeration industry Danfoss Commercial Compressor recommend to use of silver ca...

Page 61: ... pressure low side LP 36 7 bar g 532 psig LP HP 5bar 73psi Maximum speed 4 8bar s 70psi s 1 34 3bar g 497psig LP HP 5bar 73psi Maximum speed 4 8bar s 70psi s 1 1 The maximum pressurizing speed must be respected to ensure pressure equalization between LP and HP side over scroll elements 1 The maximum pressurizing speed must be respected to ensure pressure equalization between LP and HP side over sc...

Page 62: ...igerant Do not use a megohm meter nor apply power to the compressor while it is under vacuum as this may cause internal damage Commissioning Preliminary check Check electrical power supply Phase order Reverse rotation is obvious if the compressor do not build up pressure and sound level is abnormal high For DSH090 184 compressors equipped with internal reverse vent valve which can protect compress...

Page 63: ...s POE oil 160SZ from new cans For more detailed information see Lubricants filling in instructions for Danfoss Commercial Compressors AP000086435866 Dismantle and disposal Danfoss recommends that compressors and compressor oil should be recycled by a suitable company at its site Danfoss Climate Solutions 2022 10 AB288965961751en 001402 63 Scroll compressors DSH090 to DSH600 Application ...

Page 64: ...ustrial pack Table 40 Industrial pack packaging Compressor model Compres sors per pack Length Width Height Gross weight Static stack ing pallets mm inch mm inch mm inch kg lbs DSH090 8 1150 45 3 950 37 4 680 26 8 494 1089 2 DSH105 8 1150 45 3 950 37 4 750 29 5 544 1199 2 DSH120 8 1150 45 3 950 37 4 750 29 5 544 1199 2 DSH140 8 1150 45 3 950 37 4 750 29 5 566 1248 2 DSH161 8 1150 45 3 950 37 4 750 ...

Page 65: ...842 DSH184 Brazed Internal 120H1810 120H1561 120H1840 120H1838 DSH240 Brazed Module 24V AC 1 120H1749 120H1376 120H1734 120H1724 DSH240 Brazed Module 110 240V 1 120H1751 120H1374 120H1735 120H1726 DSH295 Brazed Module 24V AC 1 120H1745 120H1372 120H1732 120H1720 DSH295 Brazed Module 110 240V 1 120H1747 120H1370 120H1733 120H1722 DSH381 Brazed Module 24V AC 1 120H1741 120H1368 120H1730 120H1716 DSH...

Page 66: ...240 295 381 485 600 single compressor applications Ref 8156138 Industrial pack Compressors compatible R454B R452B and R410A Figure 70 Industrial pack Table 43 Industrial pack compressors compatible R454B R452B and R410A Compressor model Connections Motor protection Code no 3 4 7 9 208 230 3 60 380 415 3 50 460 3 60 575 3 60 380 400 3 60 DSH090 Brazed Internal 120H1865 120H1512 120H1863 120H1861 DS...

Page 67: ... 60 575 3 60 380 400 3 60 DSH090 Brazed Internal 120H1508 120H1514 120H1516 DSH105 Brazed Internal 120H1518 120H1524 120H1526 DSH120 Brazed Internal 120H1528 120H1534 120H1536 DSH140 Brazed Internal 120H1538 120H1544 120H1546 DSH161 Brazed Internal 120H1548 120H1554 120H1556 DSH184 Brazed Internal 120H1558 120H1564 120H1566 DSH240 Brazed Module 24V AC 1 120H1290 120H1330 120H1314 DSH240 Brazed Mod...

Page 68: ... R410A Multipack 10 Gaskets Table 47 Gaskets Code no Description Application Packaging Pack size 8156131 Gasket 1 1 4 Models with 1 1 4 rotolock connection Multipack 10 7956002 Gasket 1 1 4 Models with 1 1 4 rotolock connection Industry pack 50 8156132 Gasket 1 3 4 Models with 1 3 4 rotolock connection Multipack 10 7956003 Gasket 1 3 4 Models with 1 3 4 rotolock connection Industry pack 50 8156133...

Page 69: ...rs Code no Description Application Packaging Pack size 120Z0667 48W 24V surface sump heater CE and UL DSH090 to 184 Single pack 1 120Z0668 48W 230V surface sump heater CE and UL DSH090 to 184 Single pack 1 120Z0669 48W 400V surface sump heater CE and UL DSH090 to 184 Single pack 1 120Z0670 48W 460V surface sump heater CE and UL DSH090 to 184 Single pack 1 120Z0671 48W 575V surface sump heater CE a...

Page 70: ...di rectly on rail is not wished Single pack 1 Lubricant Table 54 Lubricant Code no Description Packaging Pack size 7754023 POE lubricant 1 litre can Multipack 12 120Z0571 POE lubricant 2 5 litre can Multipack 4 Terminal boxes covers and T block connectors Table 55 Terminal boxes covers and T block connectors Code no Description Application Packaging Pack Size 120Z0413 Terminal box cover DSH184 cod...

Page 71: ...ize 8156019 Sight glass with gaskets black white Multipack 4 8156129 Gasket for oil sight glass 1 1 8 white teflon Multipack 10 7956005 Gasket for oil sight glass 1 1 8 white teflon Multipack 50 8154001 Danfoss Commercial Compressors blue spray paint Single pack 1 Tandem kits Table 58 Tandem kits Code no Description Application Packaging Pack Size 120Z0634 Suction washer rigid spacer organ pipe ga...

Page 72: ...Trio solid washer 31mm OEL 1 5 8 DSH1140T right suction Single pack 1 120Z0783 Kit Trio solid washer 29 31mm OEL 1 5 8 DSH1140T left suction Single pack 1 120Z0784 Kit Trio solid washer 30mm OEL 1 5 8 DSH720T 885T left suction Single pack 1 120Z0789 Kit Trio solid washer 29mm OEL 1 5 8 DSH1245T 1350T Single pack 1 120Z0790 Kit trio solid OEL 1 5 8 DSH971T Single pack 1 120Z0793 Kit Trio solid wash...

Page 73: ...of changes Reason for change 2022 10 AB288965961751en 001402 suction washer position in trio models updated 2022 06 AB288965961751en 001401 AB288965961751en 001301 Danfoss Climate Solutions 2022 10 AB288965961751en 001402 73 Scroll compressors DSH090 to DSH600 Updates ...

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Danfoss DSH090, Application Manual

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