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until n° 7 cascade chillers with terminal units not connected
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n°1 chiller with connected terminal units (until n° 80 terminal units)
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until n° 7 cascade chillers with terminal units connected (until n° 80 terminal units)
The chillers connected in series do not need further working probes to be placed onto the system total discharge piping as the
centralized system acquires the single temperature of every unit and "thermal‐regulates" as per the average discharge
temperature. The advantage of a combined HNS system is mainly based on the fact that the user has the Hi‐T panel as the sole
interface which, in an easy and intuitive way, allows the setting and the monitoring of the "hydronic units + chillers" system. It is
possible to connect in cascade also chillers having different capacities; the Hi‐T control will be capable of "self‐learning" the
installed capacity and of visualizing (by pressing F2 button and selecting the unit) in "real time", on the main menu, the percentage
of provided capacity in comparison with the installed one (under installer's password). It is also possible, from the display of the
main controller, to know the working hydronic units number in comparison with installed ones and respecting the number of
running chillers connected in the network.
SANITARY HOT WATER FUNCTION: the chillers can also provide sanitary water by managing an external 3‐way valve and
a properly sized boiler. By connecting in cascade several chillers, the user can decide whether all or only just a few of them
used to supply "sanitary water".
CHRONOTHERMOSTAT FUNCTION: the Hi‐T remote touch‐screen control contains the function of weekly
chronothermostat with two levels of temperature T and Teco, for the control of hydronic terminals and chillers. The weekly
programming is performed in separate way for hydronic terminals and for chiller (e.g., in a hypothetical office you can program the
power‐on of the chiller 30 'before the opening time, so the water in the pipes is heated/cooled and only 10' before the start of the
activities the hydronic terminals are switched). Furthermore, the thermostat sets the weekly scheduling also for the production of
domestic hot water and for the Legionella disinfection.
HUMIDITY CONTROL FUNCTIONS/DOUBLE SET POINT: humidity and temperature sensors integrated in the Hi‐T
remote control enable the management of a double set‐point adjustment and the thermohygrometric environmental regulation.
The remote control Hi‐T manages dehumidification for underfloor heating systems.
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Hi‐T
Centralized controller
can be
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