Danfoss Maneurop NTZ048 - Default Chapter; Table of Contents

Application guidelines
3FRCC.PC.002.A4.22
Content
Maneurop® reciprocating compressors .............................................................................................. 5
Features .................................................................................................................................................................................5
Specications ........................................................................................................................................ 6
Technical specications and nominal ratings .......................................................................................................... 6
Versions ..................................................................................................................................................................................6
Compressor reference ......................................................................................................................................................6
Dimensions ...........................................................................................................................................7
1 cylinder ...............................................................................................................................................................................7
2 cylinders .............................................................................................................................................................................8
4 cylinders .............................................................................................................................................................................9
Electrical connections and wiring .....................................................................................................10
Voltage application range .............................................................................................................................................10
Single phase electrical characteristics ......................................................................................................................10
Nominal capacitor values and relays.........................................................................................................................10
Single phase motor protection and suggested wiring diagram .....................................................................10
Single phase PSC wiring with trickle circuit ...........................................................................................................11
Single phase CSR wiring with trickle circuit ...........................................................................................................11
Single phase CSR wiring without trickle circuit.....................................................................................................11
Three phase electrical characteristics .......................................................................................................................12
Three phase motor protection and suggested wiring diagram ......................................................................12
Wiring diagram with pump-down cycle ..................................................................................................................12
Wiring diagram without pump-down cycle ...........................................................................................................13
IP rating ................................................................................................................................................................................13
Motor protection ..............................................................................................................................................................13
Voltage unbalance ...........................................................................................................................................................13
Approval and certications ...............................................................................................................14
Approvals and certicates.............................................................................................................................................14
Pressure Equipment Directive 97/23/EC ..................................................................................................................14
Low voltage directive 2006/95 EC ..............................................................................................................................14
Machine directive 2006/42/EC ....................................................................................................................................14
Internal free volume ........................................................................................................................................................14
Operating conditions .........................................................................................................................15
Refrigerants and lubricants ..........................................................................................................................................15
Operating envelope R404A / R507.............................................................................................................................15
Discharge temperature protection ............................................................................................................................15
Operating limits ................................................................................................................................................................16
System design recommendations .....................................................................................................17
Piping design .....................................................................................................................................................................17
Suction line .........................................................................................................................................................................17
Discharge line ....................................................................................................................................................................17
Oil charge and oil separator .........................................................................................................................................18
Filter driers ..........................................................................................................................................................................18
Suction pressure control ................................................................................................................................................18
Suction line heat exchanger.........................................................................................................................................18
Cycle rate limit ...................................................................................................................................................................19
Liquid refrigerant control and charge limits ..........................................................................................................19
O-cycle migration ..........................................................................................................................................................19
Liquid oodback during operation ...........................................................................................................................19
Crankcase heater ..............................................................................................................................................................20
Liquid line solenoid valve & pump-down ...............................................................................................................20
Suction accumulator .......................................................................................................................................................20