VZH028-035-044 - single compressors
Operating conditions ........................................................................................................ 25
Application envelopes ............................................................................................................................................................................25
Short cycle timer function .....................................................................................................................................................................25
Discharge gas thermostat .....................................................................................................................................................................26
Oil return management function (single compressor) ...............................................................................................................27
Oil return management in hybrid manifolding .............................................................................................................................27
High and low pressure protection......................................................................................................................................................28
System design recommendations .................................................................................... 29
Essential piping design considerations ............................................................................................................................................29
Heat exchangers .......................................................................................................................................................................................30
Refrigerant charge limits .......................................................................................................................................................................30
Off-cycle migration ..................................................................................................................................................................................30
Liquid floodback during operation ....................................................................................................................................................31
Specific application recommendations ........................................................................... 32
Low ambient compressor operations ...............................................................................................................................................32
Brazed plate heat exchangers ..............................................................................................................................................................33
Reversible heat pump systems ............................................................................................................................................................33
Sound and vibration management .................................................................................. 35
Running sound level ...............................................................................................................................................................................35
Sound generation in a refrigeration or air conditioning system .............................................................................................35
Compressor sound radiation ................................................................................................................................................................35
Mechanical vibrations .............................................................................................................................................................................35
Speed by-pass ............................................................................................................................................................................................35
Gas pulsation .............................................................................................................................................................................................35
Installation ......................................................................................................................... 36
Compressor handling .............................................................................................................................................................................36
Mounting .....................................................................................................................................................................................................36
Removing connections shipping plugs ...........................................................................................................................................36
System cleanliness ...................................................................................................................................................................................37
Tubing ...........................................................................................................................................................................................................37
Filter driers ..................................................................................................................................................................................................37
Brazing and soldering .............................................................................................................................................................................37
Compressor connection .........................................................................................................................................................................37
High voltage test ......................................................................................................................................................................................38
Leak detection ...........................................................................................................................................................................................39
Vacuum pump down and moisture removal .................................................................................................................................39
Refrigerant charging ...............................................................................................................................................................................39
Commissioning .........................................................................................................................................................................................39
Oil level checking and top-up ..............................................................................................................................................................40
Trouble shooting ............................................................................................................... 41
Ordering information and packaging .............................................................................. 44
Kit ordering and shipping .....................................................................................................................................................................44
Packaging ....................................................................................................................................................................................................44
Ordering information ..............................................................................................................................................................................44
VZH converter order information .......................................................................................................................................................45
Accessories ......................................................................................................................... 46
Valves, adapters, connectors & gaskets for use on suction and discharge connections ................................................46
Crankcase heaters & thermostats .......................................................................................................................................................46
Lubricant, acoustic hoods and spare parts .....................................................................................................................................46
Spare parts frequency converter ........................................................................................................................................................47
5
FRCC.PC.034.A2.02
Application Guidelines
