Danfoss VSH088 Application Manuallines page 5

Application guidelines Content
Operating conditions ........................................................................................................................33
Application envelope .............................................................................................................................................................................33
Short cycle timer function ....................................................................................................................................................................33
Discharge gas temperature protection function .........................................................................................................................33
Discharge gas thermostat ....................................................................................................................................................................34
Oil return management function ......................................................................................................................................................34
High and low pressure protection.....................................................................................................................................................35
System design recommendations ....................................................................................................35
Essential piping design considerations ...........................................................................................................................................36
Heat exchangers ......................................................................................................................................................................................37
Refrigerant charge limits ......................................................................................................................................................................37
Off-cycle migration .................................................................................................................................................................................37
Liquid floodback during operation ...................................................................................................................................................38
Specific application recommendations ...........................................................................................39
Low ambient compressor operations ..............................................................................................................................................39
Brazed plate heat exchangers .............................................................................................................................................................40
Reversible heat pump systems ...........................................................................................................................................................40
Discharge line and reversing valve ...................................................................................................................................................41
Sound and vibration management ..................................................................................................42
Running sound level ..............................................................................................................................................................................42
Sound generation in a refrigeration or air conditioning system ............................................................................................42
Compressor sound radiation ...............................................................................................................................................................42
Mechanical vibrations ............................................................................................................................................................................42
Speed by-pass ...........................................................................................................................................................................................42
Gas pulsation ............................................................................................................................................................................................42
Installation .........................................................................................................................................43
Compressor handling ............................................................................................................................................................................43
Mounting ....................................................................................................................................................................................................43
Removing connections shipping plugs ..........................................................................................................................................43
System cleanliness ..................................................................................................................................................................................44
Tubing ..........................................................................................................................................................................................................44
Filter driers .................................................................................................................................................................................................44
Brazing and soldering ............................................................................................................................................................................44
Compressor connection ........................................................................................................................................................................44
System pressure test ..............................................................................................................................................................................45
Leak detection ..........................................................................................................................................................................................45
Vacuum pump down and moisture removal ................................................................................................................................46
Refrigerant charging ..............................................................................................................................................................................46
Commissioning ........................................................................................................................................................................................47
Oil level checking and top-up .............................................................................................................................................................47
Ordering information and packaging ..............................................................................................48
Kit ordering and shipping ....................................................................................................................................................................48
Packaging ...................................................................................................................................................................................................48
VSH voltage code J - 200-240 Volt .....................................................................................................................................................49
VSH voltage code G - 380-480 Volt ...................................................................................................................................................50
VSH voltage code H - 525-600 Volt ...................................................................................................................................................51
Accessories .........................................................................................................................................48
Valves, adapters, connectors & gaskets for use on suction and discharge connections ...............................................52
Crankcase heaters & thermostats ......................................................................................................................................................53
Lubricant , acoustic hoods and spareparts ....................................................................................................................................54
Spare parts frequency converter .......................................................................................................................................................55
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FRCC.PC.014.A4.22