Content
Scroll compression principle ..................................................4
Features ....................................................................................5
Compressor model designation .............................................6
Nomenclature ........................................................................................................ 6
Technical specifications ..........................................................7
50-60 Hz data ......................................................................................................... 7
Dimensions ...............................................................................8
WSH090-105-120-140* and 161* ..................................................................... 8
WSH 140 and 161 code 3 and WSH184.......................................................... 9
Connection details .............................................................................................10
Electrical data, connections and wiring ..............................11
Motor voltage ....................................................................................................... 11
Wiring connections ............................................................................................ 11
IP rating ................................................................................................................... 11
Terminal box temperature .............................................................................. 11
Three phase electrical characteristics ......................................................... 12
Danfoss MCI
soft-start controller ............................................................................................ 13
General wiring information ............................................................................ 14
Motor protection ................................................................................................ 15
Phase sequence and reverse rotation protection .................................. 15
Voltage imbalance .............................................................................................. 15
Approval and certifications ..................................................16
Approvals and certificates ...............................................................................16
Pressure equipment directive ........................................................................16
Low voltage directive ........................................................................................16
Machines directive .............................................................................................16
Internal free volume ..........................................................................................16
Operating conditions ............................................................17
Refrigerant and lubricants ............................................................................... 17
Motor supply ........................................................................................................18
Compressor ambient temperature ..............................................................18
Application envelope ........................................................................................18
Discharge temperature protection ............................................................. 19
High and low pressure protection ............................................................... 19
Cycle rate limit ......................................................................................................20
System design recommendations ........................................21
General ....................................................................................................................21
Essential piping design recommendations ..............................................21
Refrigerant charge limit....................................................................................22
Off-cycle migration ............................................................................................23
Liquid flood back ................................................................................................25
Specific application recommendations .............................. 26
Low ambient application .................................................................................26
Low load operation ............................................................................................27
Brazed plate heat exchangers ........................................................................27
Electronic expansion valve .............................................................................27
Reversible heat pump systems ......................................................................27
Water utilizing systems .....................................................................................29
Sound and vibration management ..................................... 30
Starting sound level ...........................................................................................30
Running sound level ..........................................................................................30
Stopping sound level ........................................................................................30
Sound generation in a refrigeration or air
conditioning system ..........................................................................................30
Installation ............................................................................. 32
Compressor handling and storage ..............................................................32
Compressor mounting ......................................................................................32
Compressor holding charge ...........................................................................33
System cleanliness ..............................................................................................33
Tubing .....................................................................................................................33
Brazing and soldering .......................................................................................33
System pressure test ..........................................................................................34
Leak detection .....................................................................................................35
Vacuum evacuation and moisture removal ..............................................35
Filter driers .............................................................................................................35
Refrigerant charging ..........................................................................................36
Insulation resistance and dielectric strength ...........................................36
Commissioning ....................................................................................................36
Oil level checking and top-up ........................................................................36
Ordering information and packaging ................................ 37
Packaging...............................................................................................................37
Ordering information ........................................................................................38
Accessories ............................................................................ 39
3
FRCC.PC.028.A5.02
Application Guidelines