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Different sizes of liquid receivers are available as options according to specific needs of the plant.
The installation of the liquid receiver is a designer's responsibility.
In case of maintenance the liquid receiver may be used to stock the entire refrigerant volume of the plant.
As mentioned in the previous paragraph, the liquid receiver location for ZHM versions shall be evaluated in accordance
to the refrigerant charge delta of the two cycles. In this example, the higher refrigerant charge is required for the chiller
mode; therefore 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 (red circle).
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(green circle).
The choise of the liquid receiver capacity and its placing is the responsibility of the designer of the plant
Remote terminals control
The units can be connected to hydronics or direct expansion terminals. In both case sit is necessary to be sure that
terminals pumps and fans are switched on before the compressors is switched and they have to switch off after the
compressor is switched off.
Expansion valve
The expansion valve for the cooling operating mode shall be placed next to the terminal.
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