MAXA HI-T - Chiller;Heat Pumps Managment; Enabling the Individual Chiller for the Production of Sanitary Water; Fancoil Manage; Procedure before Setting the H I -Tremote Control

Hi‐TCentralizedcontroller
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point,allowingacascadeoperation.Inparticular,theparameterstobesetinanetworkofthechillertobeconfiguredinacascade
are:
• Par8/44:numberofchillersinthenetwork(forcascadeoperation);
• Par9/44:Rotationperiod(forcascadeoperation);
• Par10/44:(default2.0
°C):differentialchiller(forcascadeoperation).
Inthecaseofcascadeconfiguration(Par8/44≠0),thesetpointofeachchillerischangedbyamultiplevalueoftheparameterPar
10/44(°C)(differentialchiller),accordingtoastep‐decalibration.AftereachperiodequaltoPar9/44
minutes,theprioritiesforthe
interventionofthechillerschange,byrotatingthedecalibrationofthesetpointofthechillers,inordertobalancetheloadonthe
variousmachines.Ifachillerisinalarm,itisexcludedfromtheregulation.BydefaultPar8/44=0.
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4.3 CHILLER/HEATPUMPSMANAGMENT
WiththeremotecontrolHi‐T,upto7MAXAchiller(i‐HWAKV2/V2+seriesandi‐HPseries)willrun.Themainfunctionsregulated
are:
• ON/OFFcontrolling;
• Changeofseason(summer,winter,summerwithsanitarymode,winterwithsanitarymode,sanitarymode);
• Set‐pointsetting;
•
Displaycurrentalarms;
• Alarmhistoryresidinginthekeyboardwiththedateandthetimeoftheevent;
• Accesstotheparametersofthechiller(passwordprotected);
• Displayofthemainstatusesofthechiller;
• Weeklyprogramminginsummer,winter,sanitarymodeandofthelegionella
disinfectioncycle.
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4.3.1 ENABLINGTHEINDIVIDUALCHILLERFORTHEPRODUCTIONOFSANITARYWATER
Of all the chiller in the network enabled to produce sanitary water, you can choose using the appropriate sub‐menu in “Status
setup”,whichofthesemayparticipateinthesanitaryproduction(seeParagraph4.6.2).Onlythoseselectedwillbeenabledtothe
productionofsanitarywater,alltheothers
areusedexclusivelyfortheplant.
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4.4 FANCOILMANAGE
WiththeremotecontrolHi‐T,upto80MAXAfancoilwithHNSBox,dividedintoupto9zones,willhandle.Thesettingsofthefan
coilcanbemadeforindividualzones(notforindividualunits).Themainregulationfunctionsare:
‐ ON/OFF(systemand/orzonewith
itsscheduler);
‐ Season(system);
‐ Fanspeed(ofthearea);
‐ Dehumidificationcontrol.
TotheFancoilsisalsosenttheset‐pointofthezone.Itistakenintoaccounttheadjustmentmadelocallyontheknobofthefan
coil.
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4.5 PROCEDUREBEFORESETTINGTHEHi‐TREMOTECONTROL
NOTE:Tofacilitatetheinstallationphaseandtheinterfacingofthekeyboardwiththehydronicterminals,itisadvisabletosupply
theterminalunitsseparately;eachterminalunitmustbeinterceptedbyitsswitch.
4.5.1 ADRESSING
Duringthefirststartitisnecessarytosupplyeachhydronic terminalseparately.Thephaseofaddressingisdoneaccordingtothe
followingsteps:
1. Poweronthefirstfancoil;
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2. Fromthemainpageofthesystem,goto“Configuration”;
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3. Enterinside“ServiceMenu”
;
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