Danfoss MLZ/MLM090-116-130-160-200-240, Application Manuallines, Page: 4 / 64

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Features ................................................................................................................................ 6
Scroll compression principle .............................................................................................. 7
Nomenclature ..............................................................................................................................................................................................8
Label ................................................................................................................................................................................................................8
Serial number...............................................................................................................................................................................................8
Technical specifications ...................................................................................................... 9
50 Hz ...............................................................................................................................................................................................................9
Dimensions ........................................................................................................................ 10
MLM/MLZ090 ............................................................................................................................................................................................ 10
MLM/MLZ130 ............................................................................................................................................................................................ 11
MLM/MLZ160-200-240 .......................................................................................................................................................................... 12
MLM/MLZ116 ............................................................................................................................................................................................ 13
Suction and discharge connections ................................................................................................................................................. 14
Electrical data, connections and wiring ........................................................................... 15
Motor voltage ........................................................................................................................................................................................... 15
Wiring connections ................................................................................................................................................................................. 15
IP rating ....................................................................................................................................................................................................... 16
Terminal box temperature ................................................................................................................................................................... 16
Three phase electrical characteristics .............................................................................................................................................. 16
Suggested wiring diagrams logic ...................................................................................................................................................... 17
Approvals and certifications ............................................................................................. 20
Internal free volume ............................................................................................................................................................................... 20
Operating conditions ........................................................................................................ 21
Refrigerant and lubricants.................................................................................................................................................................... 21
Motor supply ............................................................................................................................................................................................. 22
Compressor ambient temperature ................................................................................................................................................... 22
Application envelope ............................................................................................................................................................................. 22
Maximum discharge gas temperature ............................................................................................................................................ 25
High and low pressure protection..................................................................................................................................................... 26
On/off cycling (cycle rate limit) .......................................................................................................................................................... 26
System design recommendations .................................................................................... 27
General ........................................................................................................................................................................................................ 27
Essential piping design considerations ........................................................................................................................................... 27
Refrigerant charge limit ....................................................................................................................................................................... 28
Off-cycle migration ................................................................................................................................................................................. 28
Liquid flood back ..................................................................................................................................................................................... 30
Low ambient application ...................................................................................................................................................................... 31
Scroll and reciprocating ........................................................................................................................................................................ 32
Low load operations ............................................................................................................................................................................... 32
Brazed plate heat exchangers ............................................................................................................................................................. 32
Water utilising systems .......................................................................................................................................................................... 32
Sound and vibration management .................................................................................. 33
Starting sound level................................................................................................................................................................................ 33
Running sound level .............................................................................................................................................................................. 33
Stopping sound level ............................................................................................................................................................................. 33
Sound generation in a refrigeration system .................................................................................................................................. 33
Compressor sound radiation ............................................................................................................................................................... 33
Mechanical vibrations ............................................................................................................................................................................ 34
Gas pulsation ............................................................................................................................................................................................ 34
Content
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AB243586442698en-000601
Application Guidelines Single compressors