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Application guidelines

FRCC.PC.021.A5.22

Updates

Previous Version

Current Version

Page 18: Pressure equipment directive

2014/68/EU

Page 26: Pressure settings

Page 48: Maximum compressor test pressure
(high side) :

696

psig

Page 18: Updated Pressure equipment directive

2014/68/EU

Page 26: Updated pressure settings

Page 48: Maximum compressor test pressure
(high side) :

706

psig

Содержание PSH051-4

Страница 1: ...Danfoss scroll compressors PSH051 to 077 50 60 Hz R410A Application guidelines http danfoss us com...

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Страница 4: ...ical box knock out dimensions 17 IP rating 17 Electrical box temperature 17 Approval and certifications 18 Approvals and certificates 18 Pressure equipment directive 2014 68 EU 18 Low voltage directiv...

Страница 5: ...arting sound level 41 Running sound level 41 Stopping sound level 41 Installation 42 Compressor handling and storage 42 Compressor mounting 42 Parallel mounting 43 Tandem rails configuration 43 Trio r...

Страница 6: ...heat pump applications Beside scroll elements pressure ratio optimization PSH includes 2 major new technologies liquid injection and Operating Control System OCS PSH scroll compressor is also equipped...

Страница 7: ...437 17 17 10 55 7 20 13 89 1398 227 238 PSH064 4 223485 152502 21 58 10 31 7 06 17 46 1759 227 336 PSH077 4 274072 187887 25 98 10 50 7 24 21 03 2119 227 354 60Hz PSH051 4 218625 148246 20 62 10 55 7...

Страница 8: ...4 40 154 105 768 34 01 132 799 35 08 164 983 36 32 203 174 37 76 248 259 39 40 295 427 41 06 Tc F Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW He...

Страница 9: ...154 126 894 40 82 159 352 42 09 197 986 43 58 243 823 45 31 297 918 47 28 354 505 49 27 Tc F Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW Heating Btu h Pe kW Heatin...

Страница 10: ...69 24 29 8 19 8 08 11 85 5 66 13 60 17 09 9 29 7 05 10 16 13 90 60 8 60 7 20 7 68 6 73 10 11 6 63 3 22 12 14 60 4x holes 0 76 2 993 62 Rigid spacer x 4 20 9 0 05 10 47 HM 8 bolt Lock washer Flat washe...

Страница 11: ...Lock washer Flat washer Rigid spacer Nut Nut 1 16 inch HM 8 bolt Lock washer Flat washer Steel mounting sleeve Rubber grommet Nut 1 10 inch Compressor base plate 13 12 12 52 27 28 24 96 8 19 7 96 11 8...

Страница 12: ...ock washer Flat washer Steel mounting sleeve Rubber grommet Nut 1 10 inch Compressor base plate 13 12 20 64 0 05 12 52 4x holes 0 76 28 56 26 23 8 19 7 96 11 85 5 63 3 62 3 Rigid spacer x4 13 60 11 7...

Страница 13: ...1 4 1 3 8 or 2 1 4 1 5 8 sleeve This connection must be used to mount the oil equalisation line when two or more compressors are mounted in parallel please refer to section Parallel mounting for detai...

Страница 14: ...er can be applied to reduce starting current The MCC is the current at which the motor protection trips under maximum load and low voltage conditions This MCC value is the maximum at which the compres...

Страница 15: ...to the compressor terminals by 3 16 4 8 mm screws The maximum tightening torque is 2 2 ft lb Use a 1 4 ring terminal on the power leads The compressor must be connected to earth with the 0 20 inch ear...

Страница 16: ...OCS protection cover The compressor comes with prewired OCS connections for discharge gas temperature sensor DGT surface sump heater SSH motor protection phase monitoring liquid injection valve LIV No...

Страница 17: ...imer 3 min 180 s External overload protection F2 Pump down pressure switch LP High pressure safety switch HP Control device TH Liquid line solenoid valve LLSV Fused disconnect Q1 Compressor motor M Th...

Страница 18: ...Directive All PSH models UL Underwriters Laboratories All 60 Hz PSH models Other approvals certificates Contact Danfoss Products PSH051 to 077 Manufacturer s declaration of incorporation Contact Danf...

Страница 19: ...s more compact and lighter systems Polyolester oil POE is miscible with HFC s while mineral oil is not but has to be evaluated regarding lubrication ability in compressors POE oil has better thermal s...

Страница 20: ...onse temperature resistance 2 750 a 5 minutes time delay is activated After this delay has elapsed the relay is once again pulled in i e contacts M1 M2 are closed The time delay may be cancelled by me...

Страница 21: ...he compressor will only operate properly in a single direction and the motor is wound so that if the connections are correct the rotation will also be correct OCS provides protection against phase rev...

Страница 22: ...s 1 2 3 and 3 During start up or defrost the compressor may operate outside this envelope for short periods Transient conditions areas 2 1 2 2 2 3 3 are allowed and also monitored by the OCS see table...

Страница 23: ...RT value back to normal range then automatic reset and manual reset after 4 repeated occurences in 24h 2100h WARNING W35 2100h low pressure difference Max duration exceeded Area 3 WARNING W50 Compress...

Страница 24: ...is closed when the compressors is idle Liquid injection valve accessory is available refer to accessories list for code numbers An additional solenoid valve has to be installed in case of power short...

Страница 25: ...ompressor Pressure transducers LP 1 on compressor OR via comm bus Voltage out of sensor operating pressure range 0 1 4 9 V OR broadcasting not available via CAN Bus ALARM A15 Low Pressure transmitter...

Страница 26: ...ompressor High pressure safety switch shall be tested on the unit and this test may be in conflict with OCS reliability protection in the case of HP switch setting is higher than Pdisch_limit 663 psi...

Страница 27: ...es a minimum compressor running time of 2 minutes so as to provide for sufficient motor cooling after start up along with proper oil return Note that the oil return may vary since it depends upon syst...

Страница 28: ...ollow First In First Out FIFO rules A total capacity of 3000 lines is available A definite storage file running as a counter will record the following data Each alarm Each event Surface sump heater on...

Страница 29: ...allows to choose between different types of data transfer and to transfer data from OCS to a SD card MMIMYK recovers data Connect MMIMYK to the OCS via RJ11 cable Power off the OCS Power on it Data w...

Страница 30: ...to 4 are for compressor identifiant the 3 last dipswitches 5 to 7 are for circuit rack identification Below tables give examples The dipswitch address is read as NodeID at power up and changed if addr...

Страница 31: ...itters on one of the OCS of the compressors rack This ensures a fast reactivity regarding compressors protection with a polling time of 1 second The other OCS of the compressors rack will receive pres...

Страница 32: ...ure 0x3902 14594 Te_x10 Calculated evaporatinging temperature 0x3903 14595 Liq_Ctrl_ref_x10 Injection control temperature 0x3906 14598 Liq_Ctrl_error_x10 Injection control error 0x3907 14599 Liq_valve...

Страница 33: ...igh compression ratio cpr stopped 0x321F 12831 Warning W32 W32 336h High compres ratio Max duration ex 0x3220 12832 Warning W33 W33 Low pressure difference stop in 3 min 0x3221 12833 Alarm A34 A34 Low...

Страница 34: ...ate too high pressure drops or since in R410A systems the negative impact of high pressure drops on the system efficiency is stronger than in R22 R407C systems Piping should be designed with adequate...

Страница 35: ...ch liquid refrigerant accumulates in the sump it will saturate the oil and lead to a flooded start when the compressor starts running again the refrigerant evaporates abruptly under the sudden decreas...

Страница 36: ...down allows to store all the refrigerant in the high pressure side circuit On unitary or close coupled systems where the system refrigerant charge is expected to be both correct and definable the enti...

Страница 37: ...all operating conditions described before The oil level of idle compressors may disappear in the oil sight glass The oil level must retrieve a visible level in all compressors after the unit is stopp...

Страница 38: ...In air cooled machines cycling the fans with a head pressure controller will ensure that the fans remain off until the condensing pressure has reached a satisfactory level Variable speed fans can also...

Страница 39: ...ire specific precautions for ensuring a long compressor life and satisfactory operating characteristics Regardless of the refrigerant charge in the system specific tests for repetitive flood back are...

Страница 40: ...Defrost and reverse cycle gas to collect and to reduce the pressure peak during the time it takes for the valve to change position At the same time it is important that the selection and sizing of th...

Страница 41: ...tle increased start up transient sound If a compressor is miswired the compressor will run in reverse Reverse compressor rotation is characterized by an objectionable sound To correct reverse rotation...

Страница 42: ...tallation never use the lift rings on the compressor to lift the installation The risk is run that the lugs could separate from the compressor or that the compressor could separate from the base frame...

Страница 43: ...commended rails configuration Danfoss Commercial Compressors does not supply the rails described here 1 18 3 70 17 86 17 86 6 x M8 nuts 19 69 4 x 0 98 0 39 11 11 11 8 69 57 80 57 75 8 69 3 70 1 18 17...

Страница 44: ...st always be installed on compressor 1 Oil equalisation 1 3 8 Suction right 2 1 8 Discharge right 1 3 8 1 5 8 Compressor 2 Compressor 1 1 1 8 2x Suction left Discharge left 1 3 8 Grommet sleeve Flat w...

Страница 45: ...For each tandem and trio configuration specific outline drawings are available as indicated on the previous pages These drawings must always be respected No changes shall be made to the indicated tubi...

Страница 46: ...pipe work where filings and particles can not be removed System cleanliness The refrigerant compression system regardless of the type of compressor used will only provide high efficiency and good reli...

Страница 47: ...eves Use only clean refrigeration grade copper tubing and clean all connections Use brazing material with a minimum of 5 silver content Purge nitrogen or CO2 through the compressor in order to prevent...

Страница 48: ...h the high and low pressure sides Failure to do so may result in serious personal injury Pressure gauges must be used to ensure all pressures are at atmospheric level For more detailed information on...

Страница 49: ...The best location is on the liquid line between the condenser outlet and the filter drier Then during commissioning when needed a complement of charge can be done in liquid phase slowly throttling liq...

Страница 50: ...motor is tested at the factory with a high potential voltage hi pot that exceeds the UL requirement both in potential and in duration Leakage current is less than 5 mA It is not recommended to repeat...

Страница 51: ...he sight glass can be influenced by the presence of refrigerant in the oil Always use original Danfoss POE oil 160SZ from new cans Top up the oil while the compressor is idle Use the schrader connecto...

Страница 52: ...Compressor model Nb Length in Width in Height in Gross weight lb Static stacking pallets PSH051 6 45 3 38 30 2 1532 2 PSH064 4 45 3 38 30 2 1451 2 PSH077 4 45 3 38 31 5 1518 2 Compressor model Length...

Страница 53: ...mounted rigid spacers dedicated to parallel mounting For use in single applications the rigid spacers must be replaced by flexible grommets which are available as accessory kit 8156138 see section Acc...

Страница 54: ...Industry pack 50 G08 8156133 Gasket 2 1 4 Models with 2 1 4 rotolock connection Multipack 10 G08 7956004 Gasket 2 1 4 Industry pack 50 Type Code n Description Application Packaging Pack size 8153124 R...

Страница 55: ...cer sleeve for oil connect PSH051 064 PSH064 077 Single pack 1 7777048 Suction washer rigid spacer sleeve for oil connect PSH051 077 Single pack 1 Type Code n Description Application Packaging Pack si...

Страница 56: ...OCS version PSH051 064 077 Single pack 1 Type Code n Description Application Packaging Pack size 060G5707 HP sensor PSH051 064 077 Single pack 1 060G0090 060G0008 LP sensor Single pack 1 120Z0482 DGT...

Страница 57: ...Page 18 Pressure equipment directive 2014 68 EU Page 26 Pressure settings Page 48 Maximum compressor test pressure high side 696 psig Page 18 Updated Pressure equipment directive 2014 68 EU Page 26 U...

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Страница 60: ...oned us as distinct variable speed technology specialists Today we operate from engineering and manufacturing facilities spread across three continents Danfoss Inverter Scrolls Danfoss Turbocor Compre...

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