MAXA N-i-HP 0125 Use and care manual

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INVERTERAIR/WATERHEATPUMPCHILLERSWITHAXIALFANS
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USER’SANDINSTALLER’SMANUALS
Pre‐series
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Models
N‐i‐HP0125
N‐i‐HP0235
N‐i‐HP0250
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Thismanualhasbeencreatedforinformativepurpose.Thecompanydeclinesanyresponsibilityfortheresultsofanyprojectingoranyinstallationbasedontheexplanationsand/oron
thetechnicalspecificationsprovidedinthismanual.Itisbesidesforbiddenthereproductionunderanyformofthetextsandofthefigurescontainedinthismanual.
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N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
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03B07‐2014D.P.,A.MG.M.
0307‐2014D.P.,A.MG.M.
0205‐2014D.P.,A.MG.M.
0105‐2014D.P.,A.MG.M.
0011‐2013D.P.,A.M.G.M.
RevDateAuthorSupervisor
Catalogo/Catalogue/Katalog/Catalogue
MUI01110E6820‐3B
Serie/Series/Serie/Serie/Série
USER’SANDINSTALLER’SMANUALFORINVERTERAIR/WATER
INDUSTRIALSHEATPUMPSWITHAXIALFANS
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Possiblewastedelectricalorelectronicdevices/productsshouldnotbelocatedtogetherwithnormaldomesticwaste,butdisposedaccordingtothe
currentWEEElawincompliancewiththeEuropeanDirective2002/96/ECandfollowingmodifications2003/108/EC.Pleaseinformyourselfatyour
localAdministrationoratyourresellerincasetheproductwillbereplacedwithasimilarone.

N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
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INDEX
1AIMANDCONTENTSOFTHISMANUAL...............................................................................................................................4
1.1HOWTOKEEPTHISMANUAL.................................................................................................................................................4
1.2GRAPHICSYMBOLS................................................................................................................................................................4
2SAFETYLAWS......................................................................................................................................................................4
3PERMITTEDUSES................................................................................................................................................................4
4GENERALSAFETYGUIDELINES.............................................................................................................................................5
4.1WORKERS’HEALTHANDSAFETY............................................................................................................................................5
4.2PERSONALSAFETYEQUIPMENTS...........................................................................................................................................5
4.3SAFETYSYMBOLS...................................................................................................................................................................5
4.4REFRIGERANTSAFETYDATASHEET........................................................................................................................................6
5TECHNICALCHARACTERISTICS.............................................................................................................................................7
5.1FRAME...................................................................................................................................................................................7
5.2REFRIGERANTCIRCUIT...........................................................................................................................................................7
5.3COMPRESSORS.......................................................................................................................................................................7
5.4AIR‐SIDEEXCHANGERS...........................................................................................................................................................7
5.5FANMOTOR...........................................................................................................................................................................7
5.6USER‐SIDEHEATEXCHANGERS..............................................................................................................................................7
5.7ELECTRICALCONTROLPANELBOARD....................................................................................................................................7
5.8CONTROLSYSTEM..................................................................................................................................................................7
5.9MONITORINGANDPROTECTIONDEVICES.............................................................................................................................8
5.10HYDRAULICCIRCUIT...............................................................................................................................................................8
5.11FANSPEEDCONTROL.............................................................................................................................................................8
5.12ENHANCEDVAPOURINJECTION(EVI)TECNOLOGY...............................................................................................................8
6AVAILABLEVERSIONS,SIZESANDACCESSORIES..................................................................................................................9
6.1OPTIONALACCESSORIES......................................................................................................................................................10
7INSTALLATION..................................................................................................................................................................11
7.1GENERALITY.........................................................................................................................................................................11
7.2LIFTINGANDHANDLING......................................................................................................................................................11
7.3LOCATIONANDMINIMUMTECHNICALCLEARANCES..........................................................................................................11
7.4HYDRAULICCONNECTIONS..................................................................................................................................................12
7.4.1Drainageconnection....................................................................................................................................................12
7.4.2Servicevalve.................................................................................................................................................................12
7.4.3Plantdrainagesystem..................................................................................................................................................12
7.4.4Hydrauliccircuit...........................................................................................................................................................13
7.5REFRIGERANTDIAGRAMS....................................................................................................................................................13
7.5.1RefrigerantdiagramofthemodelN‐i‐HP0125...........................................................................................................13
7.5.2RefrigerantdiagramofthemodelN‐i‐HP0235‐0250..................................................................................................14
7.5.3RefrigerantdiagramofthemodelN‐i‐HP‐LT0125......................................................................................................14
7.5.4RefrigerantdiagramofthemodelN‐i‐HP‐LT0235‐0250.............................................................................................15
7.6ELECTRICALCONNECTIONS..................................................................................................................................................15
7.6.1Wiringterminalblock...................................................................................................................................................16
8STARTUP..........................................................................................................................................................................18
9POWER‐ONOFTHEUNIT..................................................................................................................................................19
10SHUTDOWNSFORLONGPERIODS.................................................................................................................................19
11MAINTENANCEANDPERIODICALCONTROLS.................................................................................................................19
11.1ENVIRONMENTALPROTECTION...........................................................................................................................................19
12WHENTHEUNITGOESOUTOFSERVICE........................................................................................................................20
13TECHNICALDATA(PRELIMINARIES)...............................................................................................................................20
13.1STANDARDVERSION............................................................................................................................................................20

N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
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13.2LTVERSION...........................................................................................................................................................................21
14ELECTRICDATAOFTHEUNITANDAUXILIARIES..............................................................................................................22
15HEATPUMPSAVAILABLEHEADPRESSUREWITHINTEGRATEDCIRCULATOR...................................................................22
15.1MODELN‐I‐HP0125.............................................................................................................................................................22
15.2MODELN‐I‐HP0235.............................................................................................................................................................22
15.3MODELN‐I‐HP0250.............................................................................................................................................................23
16WATERPUMPCURVES..................................................................................................................................................23
16.1MODELSN‐I‐HP0125–0235................................................................................................................................................23
16.2MODELN‐I‐HP0250.............................................................................................................................................................24
17LOADLOSSESCURVESOFTHEHYDRONICCIRCUIT.........................................................................................................24
18CHARACTERISTICCURVEOFTHECONTROLVALVEFORUNITINPARALLEL......................................................................25
19ACCESSORIESTOREDUCETHENOISELEVEL...................................................................................................................25
19.1SL..........................................................................................................................................................................................25
19.2SSL........................................................................................................................................................................................25
20OPERATINGLIMITS........................................................................................................................................................26
20.1EVAPORATORWATERFLOWRATE.......................................................................................................................................26
20.2COLDWATERTEMPERATURE(SUMMEROPERATION).........................................................................................................26
20.3HOTWATERTEMPERATURE(WINTEROPERATION).............................................................................................................26
20.4AMBIENTAIRTEMPERATURE...............................................................................................................................................26
21CORRECTIONFACTORSFORUSEOFGLYCOL..................................................................................................................27
22DIMENSIONS.................................................................................................................................................................28
22.1MODELSN‐I‐HWAK/WPV2/V2+06......................................................................................................................................28
BYINSERTINGTHEOPTIONALELEMENTAXITOPTHEMAXIMUMHEIGHTCHANGESFROM1741MMTO1906MM...................28
23INTERNALVIEWS...........................................................................................................................................................29
24WIRINGDIAGRAMS.......................................................................................................................................................32
24.1MODELN‐I‐HP0125(POWERSUPPLY)......................................................................................................................................32
24.2MODELN‐I‐HP0125(CONTROLSIGNALS1)...............................................................................................................................33
24.3MODELN‐I‐HP0125(CONTROLSIGNALS2)...............................................................................................................................34
24.4MODELN‐I‐HP0125(GIOPTIONALMODULECONTROLSIGNALS)...................................................................................................35
24.5MODELN‐I‐HP‐LT0125(POWERSUPPLY).................................................................................................................................36
24.6MODELN‐I‐HP‐LT0125(CONTROLSIGNALS1)...........................................................................................................................37
24.7MODELN‐I‐HP‐LT0125(CONTROLSIGNALS2)...........................................................................................................................38
24.8MODELN‐I‐HP‐LT0125(INJECTIONCONTROLSIGNALS)...............................................................................................................39
24.9MODELN‐I‐HP‐LT0125(GIMODULECONTROLSIGNALS).............................................................................................................40
24.10MODELN‐I‐HP0235‐0250(POWERSUPPLY).............................................................................................................................41
24.11MODELN‐I‐HP0235‐0250(CONTROLSIGNALS1)......................................................................................................................42
24.12MODELN‐I‐HP0235‐0250(CONTROLSIGNALS2)......................................................................................................................43
24.13MODELN‐I‐HP0235‐0250(GIOPTIONALMODULECONTROLSIGNALS)..........................................................................................44
24.14MODELN‐I‐HP‐LT0235‐0250(POWERSUPPLY)........................................................................................................................45
24.15MODELN‐I‐HP‐LT0235‐0250(CONTROLSIGNALS1).................................................................................................................46
24.16MODELN‐I‐HP‐LT0235‐0250(CONTROLSIGNALS2).................................................................................................................47
24.17MODELN‐I‐HP‐LT0235‐0250(INJECTIONCONTROLSIGNALS)......................................................................................................48
24.18MODELN‐I‐HP‐LT0235‐0250(GIMODULECONTROLSIGNALS)...................................................................................................49
25HI‐TREMOTETOUCH‐SCREENCONTROLPANEL(OPTIONAACCESSORY).........................................................................50
26CRHREMOTEKEYBOARD(OPTIONALACCESSORY).........................................................................................................50
27HYDRAULICDIAGRAMTYPE...........................................................................................................................................51
28HANDBOOKFORCONFIGURATIONSOFINSTALLATION..................................................................................................51

N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
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TheN‐i‐HPmanualcontainsallthenecessaryinformationforthebetteruseoftheapplianceundersafetyconditionsforthe
operatorthusmeetingtherequirementslistedinthe2006/42/CEEquipmentDirectiveandfollowingamendments.
1AIMANDCONTENTSOFTHISMANUAL
Thismanualprovidesthebasicinformationasfortheselection,installation,operationandmaintenanceoftheN‐i‐HPunits.Itis
addressedtotheusersoftheapplianceanditenablesthemtousetheunitefficiently,evenwithoutanypreviousspecific
knowledgeofit.
Thismanualdescribesthecharacteristicsoftheapplianceatthetimeofitsmarketpenetration;therefore,itmaynotcapturelater
technologicalimprovementsintroducedbyADVANTIXSPAaspartofitsconstantendeavourtoenhancetheperformance,
ergonomics,safetyandfunctionalityofitsproducts.
ADVANTIX,therefore,isnotconstrainedtoupdatethemanualsforpreviousversionsofmachines.
It’srecommendedthat,theusermustfollowtheinstructionscontainedinthisbooklet,especiallythoseconcerningthesafetyand
routinemaintenance.
1.1 HOWTOKEEPTHISMANUAL
Themanualhastobealwayskeptwiththeunititrefersto.Ithastobestoredinasafeplace,awayfromthedustandmoisture.It
hastobeaccessibletoalluserswhoshallconsultitanytimetheyareindoubtonhowtooperatetheequipment.
ADVANTIXSPAreservestherighttomodifyitsproductsandrelatedmanualswithoutnecessarilyupdatingpreviousversionsofthe
referencematerial.Itdeclinesalsoanyresponsibilityforpossibleinaccuraciesinthemanualifduetoprintingortranscription
errors.
Thecustomershallstoreanyupdatedcopyofthemanualorpartsofitdeliveredbythemanufacturerasanattachmenttothis
manual.
ADVANTIXSPAisavailabletogiveanydetailedinformationaboutthismanualandtogiveinformationregardingtheuseandthe
maintenanceofitsownunits.
1.2 GRAPHICSYMBOLS
Indicatesoperationsthatcanbedangerousforpeopleand/ordisruptsthecorrectoperationoftheequipment.
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Indicatesprohibitedoperations.
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Indicatesimportantinformationthattheoperatorhastofollowinordertoguaranteethecorrectoperationofthe
equipmentincompletesafety.
2SAFETYLAWS
Everyunithavebeendesignedinaccordancewiththefollowingdirectivesandharmonisedstandards:
•EUDirectives97/23/EC,2006/42/EC,2014/30/CE,2011/65/EU,2012/19/UE
•UNIEN378‐1,378‐2,EN12735‐1
•UNIENISO12100,EN60204‐1,UNIENISO13857
•CEIEN61000‐6‐3,IEC61000‐6‐2.
3PERMITTEDUSES
Thecompanyexcludesanycontractualandextracontractualliabilitiesfordamagescausedtopersons,animalsorobjects,by
incorrectinstallation,settingandmaintenance,improperuseoftheequipment,andthepartialorsuperficialreadingofthe
informationcontainedinthismanual.
Theseunitshavebeendesignedonlyforheatingand/orcoolingofwater.Anyotherusenotexpresslyauthorizedbythe
manufacturerisconsideredimproperandthereforenotallowed.
Thelocationoftheplant,thehydraulicandelectricalcircuitsmustbeestablishedbytheplantingdesignerandmusttakeinto
accountbothtechnicalrequirementsaswellasanyapplicablelocallawsandauthorizedspecifications.
Theexecutionofallworksmustbeperformedbyskilledandqualifiedpersonnel,competentintheexistingrulesindifferent
countries.

N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
5
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4GENERALSAFETYGUIDELINES
BeforebeginningtooperateonN‐i‐HPunitseveryuserhastobeperfectlyknowledgeableaboutthefunctionsoftheequipment
anditscontrolsandhastohavereadandunderstoodtheinformationlistedinthismanual.
It’sstrictlyforbiddentoremoveand/ortamperwithanysafetydevice.
Chil
d
renorunassisteddisabledpersonsarenotallowedtousetheappliance.
Donottouchtheappliancewhenbarefoot orpartsofthebody arewetordamp.
Donotpull,removeortwisttheelectricalcablescomingoutfromtheunit,evenifitisdisconnectedfromthemain
powersupply.
Donotstepwithyourfeetontheappliance,sitdownand/orplaceanytypeofobject.
Donotsprayorpourwaterdirectlyontheunit.
Donotdisposeof,abandonorleavewithinreachofchildrenpackagingmaterials
(
cardboard,staples,plasticbags,
etc)astheymayrepresentahazard.
Anyroutineornot‐routinemaintenanceoperationshallbecarriedoutwhentheequipmenthasbeenshutdown,
disconnectedfromelectricpowersources.
Donotputneitheryourhandsnorinsertscrewdrivers,spannersorothertoolsintomovingpartsoftheequipment.
Theequipmentsupervisorandthemaintenancemanhastoreceivesuitabletrainingfortheperformanceoftheir
tasksinsafety.
Operatorshavetoknowhowtousepersonalprotectivedevicesandhavetoknowtheaccident‐preventionguidelines
containedinnationalandinternationallawsandnorms.
4.1 WORKERS’HEALTHANDSAFETY
TheEuropeanCommunityhasadoptedanumberofdirectivesonworkplace’shealthandsafety,including89/391/CEE,
89/686/CEE,89/655/CEE,86/188/CEEand77/576/CEEdirectives.Everyemployershallimplementsuchnormsandensurethat
workerstorespectthem.Itpointsoutthat:

Donottamperwithorreplacepartsoftheequipmentwithoutthespecificconsentofthemanufacturer.The
manufacturershallhavenoresponsibilitywhatsoeverincaseofunauthorisedoperations.

Usingcomponents,expendablematerialsorsparepartsthatdonotcorrespondtothoserecommendedbythe
manufacturerand/orlistedinthismanualmaybedangerousfortheoperatorsand/ordamagetheequipment

Theoperator’sworkplacehastobekeptclean,tidyandfreefromobjectsthatmaypreventfreemovements.
Appropriatelightingoftheworkplaceshallbeprovidedsoastoallowtheoperatortocarryouttherequired
operationssafely.Poorortoostronglightingcancauserisks.

Ensurethatworkplacesarealwaysadequatelyventilatedandthataspiratorsareworking,ingoodconditionandin
compliancewiththerequirementsofthelawsinforce.
4.2 PERSONALSAFETYEQUIPMENTS
WhenoperatingandmaintainingtheN‐i‐HPunits,usethefollowingpersonalprotectiveequipments.

Protectiveclothing:Maintenancemenandoperatorshastowearprotectiveclothingthatcomplieswiththebasic
safetyrequirementscurrentlyinforce.Incaseofslipperyfloors,usershavetowearsafetyshoeswithnon‐slipsoles.

Gloves:Duringmaintenanceorcleaningoperationprotectiongloveshavetobeused

Maskandgoggles:Respiratoryprotection(mask)andeyeprotection(goggles)shouldbeusedduring
cleaningandmaintenanceoperations.
4.3 SAFETYSYMBOLS
Theunitfeaturesthefollowingsafetysigns,whichhastobecompliedwith:
Generalhazards

Electricshockhazard

Presenceofmovingorgans

Presenceofsurfacesthatmaycauseinjures
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N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
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4.4 REFRIGERANTSAFETYDATASHEET
Name:R410A(50%Difluoromethane(R32);50%Pentafluoroethane(R125).
RISKSINDICATIONS
Majorrisks:Asphyxia
Specificrisks:Therapidevaporationmaycausefreezing.
FIRSTAID
Generalinformations:Nevergiveanythingbymouthtoanunconsciousperson.
Inhalation:Movetofreshair.
Oxygenorartificialrespirationifnecessary.
Donotadministeradrenalineorsimilardrugs.
Eyescontact:Rinsecarefullywithwaterforatleast15minutesandconsultadoctor.
Contactwithskin:Washimmediatelywithplentyofwater.
Takeoffimmediatelythecontaminatedclothing.
FIREPREVENTION
ExtinguishingMedia:Whatever.
Specificrisks:Increaseinpressure.
Specificmethods: Usewaterspraytocoolcontainers
ACCIDENTALRELEASEACTIONS
Personalprecautions:Evacuatepersonneltosafeareas.
Provideadequateventilation.
Usepersonalprotectiveequipment.
Environmentalprecautions:Evaporate.
Cleaningmethod: Evaporate.
HANDLINGANDSTORAGE
Manipulation
Action/technicalprecautions: Providesufficientairexchangeand/orsuctioninworkplaces.
Recommendationsforsafeuse:Donotbreathevaporsoraerosol.
Storage:Closetightlyandstoreinacool,dryandwellventilatedplace.
Storeinoriginalcontainer.Incompatibleproducts:explosive,flammablematerials,Organicperoxide
EXPOSURECONTROL/PERSONALPROTECTION
Controlparameters: AEL(8‐he12‐hTWA)=1000ml/m³foreachofthetwocomponents.
Respiratoryprotection:Forrescueandmaintenanceoperationinstoragetanksuseself‐containedrespiratorapparatus.
Thevaporsareheavierthanairandcancausesuffocationbyreducingoxygenavailableforbreathing.
Eyesprotection:Safetyglasses.
Protectionofhands:Rubbergloves.
Hygienemeasures:Donotsmoke.
PHYSICALANDCHEMICALPROPERTIES
Colour:Colourless.
Odor:Light.
Boilingpoint:‐52.8°Catatmosphericpressure.
Lightingpoint:Itdoesnotignite.
Density:1.08kg/lat25°C.
Solubilityinwater:Negligible.
STABILITYANDREACTIVITY
Stability: Noreactivitywhenusedwiththeappropriateinstructions.
Materialstoavoid: Highlyoxidizingmaterials.Incompatiblewithmagnesium,zinc,sodium,potassiumandaluminum.
Theincompatibilityismoreseriousifthemetalispresentinpowderedformorifthesurfaceswere,recently,
unprotected.
DecompositionproductsTheseproductsarehalogenatedcompounds,hydrogenfluoride,carbonoxides(CO,CO2),carbonylhalides.
Risks:
TOXICOLOGICALINFORMATION
Acutetoxicity:(R32)LC50/inhalation/4hours/onrat>760ml/l
(R125)LC50/inhalation/4hours/onrat>3480mg/l
Localeffects:ConcentrationssubstantiallyabovetheTLVmaycausenarcoticeffects.
Inhalationofdecomposedproductsofhighconcentrationsmaycauserespiratoryfailure(pulmonaryedema).
Longtermtoxicity:Didnotshowcarcinogenic,teratogenicormutageniceffectsinanimalexperiments.
ECOLOGICALINFORMATION
Globalwarmingpotential1730
GWP(R11=1):
Potentialdepletion0
OzoneODP(R11=1):
Disposalconsiderations:usablewithreconditioning.
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N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
7
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5TECHNICALCHARACTERISTICS
TheN‐i‐HPwaterchillersandheatpumpsseriesaredesignedforapplicationsinresidentialandindustrialareas,theseunitsare
extremelyversatileandcanoperateinheatpumpmodewiththeabilityofhotwatergenerationatatemperatureof55°Cfor
environmentalheatingandsanitaryapplications.TheDCBrushlessInvertercompressortechnology,matchedwiththeelectronic
expansionvalve,thepumpandthevariablespeedbloweraregenerallyusedforoptimizingthepowerconsumptionandefficient
operationoftherefrigeratingcomponents.
5.1 FRAME
AllN‐i‐HPunitsaremadeupofhot‐galvanisedthicksheetmetal,paintedwithpolyurethanepowderenamelsat180°Ctoensure
thebestresistanceagainstatmosphericagents.Thefrontpanelishingedtotheliftsidetoallowaccesstotheinternal
componentsforinspectionandmaintenance.Thescrewsandtheinsertsaremadeupofgalvanizedsteel.
5.2 REFRIGERANTCIRCUIT
TherefrigerantcircuithasbeenmanufacturedaccordingtotheUNIEN13134directiveconcerningweldingprocedures.The
refrigerantgasemployedintheseunitsisR410Atype.Therefrigerantcircuitincludesinitsbasicversion:4‐wayreversingcycle
valve,electronicexpansionvalve,liquidseparator,liquidreceiver,checkandmaintenancevalves,pressuresafetydeviceaccording
toPEDregulation(highpressureswitch),pressuretransducerstoaccuratelyadjusttheevaporatingandcondensingpressures,
filtersforexpansionvalvetopreventitsclogging.Theversionswithvapourinjectionalsoincludeheatexchangertoproduce
vapour,electronicinjectorvalve,theON‐OFFvalvesofinjectionincaseoftwocompressors.
5.3 COMPRESSORS
ThecompressorsarescrolltypeDCinverterdesignedforusewithR410Arefrigerant,andaremountedonarubbermaterialactingasashock
absorber.Thecompressorsoftheinjectionversionsaredesignedtooptimizetheefficiencyoftherefrigerantcycleunderlow
ambienttemperaturesconditionsandaresuppliedwithconnectionforvapourinjection.
Thecrankcaseheateroperateswhenthecompressorremainsoffforatleast30minutesandifthedischargetemperatureisbelow
20°C(withhysteresisof2.0°C).Whenthecompressorrestarts,thecrankcaseheaterwillstopoperation.Werecommendtoturn
ontheunitandtoputitinstandbymodeatleast6hoursbeforethefirststartup.
Thecheckingofthecompressorsispossiblethroughthefrontpaneloftheunitthatallowsthemaintenanceofthecompressors
eveniftheunitisinoperation.
5.4 AIR‐SIDEEXCHANGERS
Theair‐sideheatexchangerismadeupofcopperpipesandaluminiumfins.Thecopperpipesdiameteris7,94mm,thethickness
ofthealuminiumfinsis0,12mm.Thepipesaremechanicallyexpandedintothealuminiumfinsinordertoimprovetheheat
transfercoefficient.Thegeometryoftheseheatexchangersensuresalowvalueair‐sidepressuredropandthenitallowstheuse
offanswithlownumberofrevolutions(withtheadvantageofreducingtheunitnoiselevel).
5.5 FANMOTOR
Thefanmotorisaxialtypewithplasticaerofoilblades.Theyarestaticallyanddynamicallybalancedandsuppliedwithasafetyfan
guard.Thefanmotorisamodulatedbrushlesstype,directlycoupledandequippedwithanintegratedthermaloverload
protection.TheprotectionclassofthemotorisIPX4accordingtoCEIEN60529.
5.6 USER‐SIDEHEATEXCHANGERS
Theuser‐sideheatexchangeraremadeupofAISI316stainlesssteelbraze‐weldedplatestype,andarefactoryinsulatedwith
flexibleclosecellmaterialandareequippedwithanantifreezeelectricheater(optionalaccessory:KA).Eachevaporatoris
equippedwithatemperaturesensorforantifreezeprotectionthatactivatesthecirculator,eveninthecasewheretheunitis
turnedoffwhenmeetingthesettingparametersbycontroller.
5.7 ELECTRICALCONTROLPANELBOARD
TheelectricalcontrolpanelboardismanufacturedaccordingtoEuropeanUniondirectivescurrentlyinforce.Toaccesstothe
electricalcontrolpanelboard,youmustopenthefrontpanel,lockthedisconnectswitchintheOffposition,(presenceofadoor
locksystem)andbymeanofaflat‐headscrewdriver,turntoopenquarter‐turnthetwolocks.TheprotectiondegreeisIP34.The
electricboxissuppliedwithaterminalblockcompletedwithfreecontactsforremoteON‐OFF,winter/summerchangeover,
auxiliaryheater,sanitarywatertemperaturesensor,managementofexternal3‐wayvalveandcontactsforremotecontrolpanel.
TheadditionoftheoptionalmoduleGIenablesthemanagementoffurtherfunctionsoftheplant.
5.8 CONTROLSYSTEM
TheN‐i‐HPunitsareequippedwithamicroprocessoradoptinganoverheatingcontrollogicprogramthroughthethermostatic
valvedrivenbythepressuretransducerssignals.TheCPUalsomanagesthefollowingfunctions:watertemperatureregulation,
antifreezeprotection,compressors’timesetting,alarmreset,alarmsmanagementandoperationLED.Uponrequest,the
microprocessorcanbeconnectedtoaBMSremotecontrolsystemandtothesimplerHNSsystemwithourterminalunits.The
controlsystemtogetherwiththeINVERTERtechnologyandtheonboardsensorscancontinuouslymonitorandadaptthe
performanceoftheinvertercompressor,ofthecirculatorpumpandofthefanmotor.

N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
8
TheINVERTERsystemallowstoreducetheplant’swatercontenttoitsminimumfromtheusualvalue12‐15liters/kWto75
litersforthemodelN‐i‐HP0125,105litersforthemodelN‐i‐HP0235and150litersforthemodelN‐i‐HP0250inABSOLUTE.
Becauseofthereducedwatercontent,theN‐i‐HPunitscanbeinstalledinplantswithoutwatertankwithadvantagesofthe
reducedsizeoftheappliance,theinstallationspaces,heatlossesandinstallationandmaintenancecostsoftheplant.
5.9 MONITORINGANDPROTECTIONDEVICES
Theunitsarestandardequippedwiththefollowingcontrolandprotectiondevices:returnwatertemperaturesensorinstalledon
thereturnwaterpipelinefromtheplant,operatingandantifreezesensorinstalledontheoutletwaterpipetotheplant,high
pressuretransducer,lowpressuretransducer,compressor’sinletandoutlettemperaturesensors,thermalprotectiondevicefor
fanmotors,watersidewaterflowswitchtoprotecttheevaporator,highpressureHPflowswitch.
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CAUTION:TheINVERTERcontrolsystemisabletomanageminimumwatercontentsintheplantuptoavalueof
75litersforthemodelN‐i‐HP0125,of105litersforthemodelN‐i‐HP0235,of150litersforthemodelN‐i‐HP0250,
andof45litersforthe15model.ThisvaluemakesreferencetothelitersabsolutevalueandnottoanykWof
installedpower.
5.10 HYDRAULICCIRCUIT
TheheappumpchillersofN‐i‐HPseriesaresuppliedwithanintegratedhydronickitincluding:thesafetyvalve(6bar)andthe
automaticairreleasevalveandapressuregaugesatinletandoutletoftheheatexchangerforevaluatingtheloadlosses,service
valveandflowswitch.Theversionwithanintegratedmodulatingtypecirculatorpumpadoptingabrushlessmotor,suitablefor
chilledwaterutilizationanddirectlymanagedbythecontrolleronboard.
5.11 FANSPEEDCONTROL
Thistypeofregulation,performedbythemicroprocessor,isnecessaryforoptimizingtheevaporation/condensationpressure
duringsummer/winteroperationinordertoallowthecorrectoperationoftheappliance.
5.12 ENHANCEDVAPOURINJECTION(EVI)TECNOLOGY
TheADVANTIXheatpumpsseriesN‐i‐HP‐LTareequippedwithscrollcompressors
withvaporinjection(EVItechnology)providemaximumefficiencyregardingthe
standardunitswithscrollcompressors.
TheEVItechnologyconsistsofinjectingtherefrigerantvapourattheintermediate
stageofthecompressionprocesswhichcansignificantlyincreasethecapacityand
theefficiencyofthecompressor.
EachscrollcompressorinstalledintheheatpumpsoftheseriesN‐i‐HP‐LTis
comparabletoatwo‐stagecompressorbutwithanintermediatestageofcooling
therefrigerant.
ThediagramshowsthemainstagesoftherefrigerationcycleoftheunitwithEVI
technology.Thestageofhighpressureisconsistingoftheextractionofapartof
theliquidrefrigerantcomingoutofthecondenserandthenexpandsthroughan
injectionvalve,inaheatexchangerwhichfunctionsasasubcooler.
ThegeneratedsuperheatedvapouristheninjectedintotheE.V.I.compressorin
themiddleofthecompressioncycle(throughaspecialpipeinsidethecompressor
itself).
Theadditionalsubcoolingoftheliquidthusobtainedcouldgreatlyincreasethe
capacityoftheevaporator.
Ahigherratiobetweenthecondensationandevaporationpressureswill
significantlyincreasetheperformanceofthissystemwithrespecttoallthe
traditionaltechnologiesofgascompression.
Thissystemallowstheair/waterheatpumpoftheseriesN‐i‐HP‐LTtogeneratehot
waterupto58°Candcapableofoperatingintemperaturesupto‐25°C.
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N‐i‐HPInverterair/waterheatpumpchillerswithaxialfans
9

6AVAILABLEVERSIONS,SIZESANDACCESSORIES
Thecodeunitiscomposedof:
no.7fixeddigits(thefirsttwodigitsidentifytheseriesN‐i‐HPinitseventualcustomizations)
the#symbolasaseparator
no.9variablesdigits(fields)identifythesizes,versionsandfactoryinstalledaccessories
no.2fixeddigitsequalto0,ifarenotused

XX10514#(CT)(TA)(IV)(CI)(KA)(GI)(FAN)(SIL)(TR)00
FATHERCODESIZEVERSIONFACTORYINSTALLEDACCESSORIES
XX10514#CTTAIVCIKAGIFANSILTR
Heatingcapacity
Waterpipesconfiguration
Vapourinjection
Hydronicconfiguration
AntifreezeKit
Managementmoduleforplant
Typeoffan
Silencing
Batterytreatment
025kW
135kW
250kW
02pipes
1Notavailable
2Notavailable
  0Whitoutinjection
  1Withinjection
    0Hydraulicpipe
   1Integratedcirculator
   2Shutoffvalve
      0Withoutantifreezekit
      1Withantifreezekit
        0GIModulenotpresent
        1GIModulpresent
          0DCfan
          1Notavailable
            0Notsilenced
            1Silenced
            2Supersilenced
              0Coilwithouttreatement
              1Varnishedcoil
              2CoilwithFinguardtreatment
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