Hi‐TCentralizedcontroller
43
• untiln°7cascadechillerswithterminalunitsnotconnected
• n°1chillerwithconnectedterminalunits(untiln°80terminalunits)
• untiln°7cascadechillerswithterminalunitsconnected(untiln°80terminalunits)
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 advantageof a combined HNS system is mainly based on the fact that the user has the Hi‐T panelas the
sole
interfacewhich,inaneasyandintuitiveway,allowsthesettingandthemonitoringof the“hydronicunits+chillers”system.Itis
possible to connect in cascade also chillers having different capacities; the Hi‐T control will be capable of “self‐learning” the
installedcapacityandofvisualizing
(bypressingF2buttonandselectingtheunit)in“realtime”,onthemainmenu,thepercentage
ofprovidedcapacityincomparisonwith the installedone(under installer’spassword). It isalsopossible,from the displayof the
main controller, to know the working hydronic units number in comparison with installed
ones and respecting the number of
runningchillersconnectedinthenetwork.
SANITARYHOTWATERFUNCTION:thechillerscanalsoprovidesanitarywaterbymanaginganexternal3‐wayvalveand
aproperlysizedboiler.Byconnectingincascadeseveralchillers,theusercandecidewhetheralloronlyjustafewofthem
canbe
usedtosupply“sanitarywater”.
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
programmingisperformedinseparatewayforhydronicterminalsandforchiller(e.g.,inahypotheticaloffice
youcanprogramthe
power‐onofthechiller30'beforetheopeningtime,sothewaterinthepipesisheated/cooledandonly10'beforethestartofthe
activitiesthehydronicterminalsareswitched).Furthermore,thethermostatsetstheweeklyschedulingalsofortheproductionof
domestichotwater
andfortheLegionelladisinfection.
HUMIDITYCONTROLFUNCTIONS/DOUBLESETPOINT:humidityandtemperaturesensorsintegratedintheHi‐T
remote control enable the management of a double set‐point adjustment and the thermohygrometric environmental regulation.
TheremotecontrolHi‐Tmanagesdehumidificationforunderfloorheatingsystems.
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