Maneurop¢® reciprocating compressors - guide NTZ.pdf¢  MANEUROP¢®...

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Transcript of Maneurop¢® reciprocating compressors - guide NTZ.pdf¢  MANEUROP¢®...

  • MAKING MODERN LIVING POSSIBLE

    SELECTION & APPLICATION GUIDELINES

    Maneurop® reciprocating compressors NTZ R404A - R507A

  • MANEUROP® RECIPROCATING COMPRESSORS ........................................................................................................... 4 Features ................................................................................................................................................................................................................................................................... 4 Compressor reference ............................................................................................................................................................................................................. 4

    INTRODUCTION ............................................................................................................................................................................................................................................. 5 Code numbers .......................................................................................................................................................................................................................................... 5 Packaging ............................................................................................................................................................................................................................................................ 5

    SPECIFICATIONS .......................................................................................................................................................................................................................................... 6 Technical specifi cations and nominal ratings ...................................................................................................................... 6 Approvals and certifi cates ............................................................................................................................................................................................... 6 Operating envelope ..................................................................................................................................................................................................................... 6

    OUTLINE DRAWINGS .......................................................................................................................................................................................................................... 7 1 cylinder ............................................................................................................................................................................................................................................................. 7 2 cylinders .......................................................................................................................................................................................................................................................... 8 4 cylinders .......................................................................................................................................................................................................................................................... 9

    ELECTRICAL CONNECTIONS AND WIRING ........................................................................................................................... 10 Voltage application range ........................................................................................................................................................................................... 10 Electrical connections ......................................................................................................................................................................................................... 10 Single phase electrical characteristics ............................................................................................................................................ 10 Nominal capacitor values and relays ................................................................................................................................................. 11 Single phase motor protection and suggested wiring diagram ........................................... 11 Three phase electrical characteristics .................................................................................................................................................. 13 Three phase motor protection and suggested wiring diagram ................................................. 13

    REFRIGERANTS AND LUBRICANTS .............................................................................................................................................................. 15

    SYSTEM DESIGN RECOMMENDATIONS ............................................................................................................................................ 16 Piping design .............................................................................................................................................................................................................................................. 16 Operating limits .................................................................................................................................................................................................................................... 18 Motor protection ............................................................................................................................................................................................................................... 19 Discharge temperature protection ............................................................................................................................................................ 19 Liquid refrigerant control and charge limits ......................................................................................................................... 20

    SOUND AND VIBRATION MANAGEMENT .................................................................................................................................... 22 Sound .......................................................................................................................................................................................................................................................................... 22 Vibration ............................................................................................................................................................................................................................................................... 22

    INSTALLATION AND SERVICE .................................................................................................................................................................................... 23 System cleanliness .......................................................................................................................................................................................................................... 23 Compressor handling, mounting and connection .................................................................................................. 23 System pressure test .................................................................................................................................................................................................................. 24 Leak detection ......................................................................................................................................................................................................................................... 25 Vacuum pump-down and dehydration procedure ................................................................................................ 25 Start-up ................................................................................................................................................................................................................................................................... 25

    CONTENTS

  • NT Z 4 L048 A R1 A

    4: Motor voltage code (see table page 4)

    R1: Equipment version (R1: Rotolock connections, oil equalisation connection and sight glass)

    L: Motor protection (L: Internal Motor Protection)

    NT: New low temperature reciprocating compressors

    A: Evolution index, indicating compressor modifications

    Z: Polyolester lubricant

    048: Displacement in cm3 / rev.

    A: UL index indicator

    4

    MANEUROP® RECIPROCATING COMPRESSORS

    Features The Maneurop® NTZ series from Danfoss Commercial Compressors is a range of hermetic reciprocating compressors for low evaporating tem- perature applications. These compres- sors gradually replace the existing LTZ range. The NTZ series is engineered as a true low temperature compressor, opti- mised at –35°C with an extended evaporating temperature range from –45°C up to –10°C. The compressors can be operated at a return gas tem- perature (suction gas temperature) of 20°C even at low evaporating temperatures.

    A liquid injection system is not re- quired. All components are of high quality and precision to assure a long product life. NTZ compressors have a la