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As mentioned in the previous paragraph, the liquid receiver location for RAUX versions shall be evaluated in accordance to the
refrigerant charge delta of the two cycles. If the higher refrigerant charge is required for the chiller mode the liquid receiver shall be
placed in a location that ensure the proper filling during the operation in heat pump mode and the proper emptiness during chiller
mode.
In case of excess refrigerant charge in heat pump mode, the liquid receiver shall be placed in a location that ensure the proper filling
during the operation in chiller mode and the proper emptiness during heat pump mode.
IMPORTANT
The choice of the liquid receiver capacity and its placing is the responsibility of the designer of the plant.
9
REMOTE TERMINALS CONTROL AND EXPANSION VALVE
The units can be connected to hydronics or direct expansion terminals. In both case sit is necessary to make sure that terminals
pumps and fans are switched on before the compressors is switched on and they have to be switched off after the compressor is
switched off.
The expansion valve for the cooling operating mode shall be placed next to the terminal.
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