VTZ variable speed Reciprocating variable speed Reciprocating compressors R404A, R507, R407C, R134a Application guidelines Variable speed compressors

Embed Size (px)

Text of VTZ variable speed Reciprocating variable speed Reciprocating compressors R404A, R507, R407C,...

  • VTZ variable speed Reciprocating compressorsR404A, R507, R407C, R134a

    Application guidelines

    http://cc.danfoss.com

  • Variable speed compressors ............................................................................................................... 6Speed control ...............................................................................................................................................................................................6Advantages of speed control .................................................................................................................................................................6Danfoss VTZ compressors with CD frequency converters ..........................................................................................................6

    Compressor and frequency converter selection ............................................................................... 7Compressor size ..........................................................................................................................................................................................7Frequency converter variants ................................................................................................................................................................7Compressor and frequency converter combination .....................................................................................................................7

    Nomenclature and specifications ....................................................................................................... 8Compressor nomenclature .....................................................................................................................................................................8Compressor specifications ......................................................................................................................................................................8Frequency converter nomenclature ....................................................................................................................................................8Frequency converter general specifications ....................................................................................................................................8

    Operating conditions .......................................................................................................................... 9Application envelope R404A/R507A ...................................................................................................................................................9Speed range R404A/R507A .....................................................................................................................................................................9Application envelope R407C ............................................................................................................................................................... 10Speed range R407C ................................................................................................................................................................................ 10Application envelope R134a ............................................................................................................................................................... 11Speed range R134a ................................................................................................................................................................................. 11High and low pressure protection..................................................................................................................................................... 12Low ambient temperature operation .............................................................................................................................................. 12Electronic expansion valve .................................................................................................................................................................. 12Short cycle timer function .................................................................................................................................................................... 13Discharge gas temperature protection function ......................................................................................................................... 13Discharge gas thermostat .................................................................................................................................................................... 13Oil return management function ...................................................................................................................................................... 14

    Approvals & certificates .................................................................................................................... 15Approvals and certificates .................................................................................................................................................................... 15Pressure equipment Directive 97/23/EC ......................................................................................................................................... 15Internal free volume ............................................................................................................................................................................... 15

    Technical specifications .................................................................................................................... 16VTZ038 / VTZ054 ..................................................................................................................................................................................... 22

    Dimensions ........................................................................................................................................ 22VTZ086 / VTZ121 ..................................................................................................................................................................................... 23VTZ171 / VTZ215 / VTZ242 ................................................................................................................................................................... 24Sight glass .................................................................................................................................................................................................. 25Schrader ...................................................................................................................................................................................................... 25Suction & discharge connections ...................................................................................................................................................... 25Frequency converter dimensions ...................................................................................................................................................... 25Frequency converters Enclosure B1 - IP21 ..................................................................................................................................... 28Frequency converters Enclosure B2 - IP21 ..................................................................................................................................... 28Frequency converters Enclosure A5 - IP55 ..................................................................................................................................... 29Frequency converters Enclosure B1 - IP55 ..................................................................................................................................... 29Frequency converters Enclosure B2 - IP55 ..................................................................................................................................... 30

    Electrical data, connections and wiring ........................................................................................... 31Compressor electrical specifications ................................................................................................................................................ 31Wiring & EMC protection ...................................................................................................................................................................... 31EMC correct installation of an IP20 frequency converter CD302 ........................................................................................... 32Wiring diagram ......................................................................................................................................................................................... 33Fuses ............................................................................................................................................................................................................. 34Supply voltage .......................................................................................................................................................................................... 34Wiring connections ................................................................................................................................................................................. 35Electrical connections ................................................................................................................................................................