A2B Accorroni HPE Series Use and care manual

User’s and Installer’s Manual
HPE 06÷15 INVERTER
Chillers and inverter air/water heat pumps
with axial fans
HPE 06÷15 INVERTER

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0309‐2013A.M.G.M.
0207‐2013D.P.G.M.
0105‐2013D.P.G.M.
0005‐2013D.P.G.M.
RevDateAuthorSupervisor
Catalogo/Catalogue/Katalog/Catalogue
MUI14124D5820‐03
Serie/Series/Serie/Serie/Série
USER’SANDINSTALLER’SMANUALFORCHILLERSANDINVERTER
AIR/WATERHEATPUMPSWITHAXIALFANS
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.

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INDEX
1AIMANDCONTENTSOFTHISMANUAL .............................................................................................................................. 5
1.1HOWTOKEEPTHISMANUAL ................................................................................................................................................. 5
1.2GRAPHICSYMBOLS................................................................................................................................................................. 5
2SAFETYLAWS..................................................................................................................................................................... 5
3PERMITTEDUSES................................................................................................................................................................ 5
4GENERALSAFETYGUIDELINES ............................................................................................................................................ 6
4.1WORKERS’HEALTHANDSAFETY ............................................................................................................................................ 6
4.2PERSONALSAFETYEQUIPMENTS ........................................................................................................................................... 6
4.3SAFETYSYMBOLS.................................................................................................................................................................... 6
4.4REFRIGERANTSAFETYDATASHEET ........................................................................................................................................ 7
5TECHNICALCHARACTERISTICS ............................................................................................................................................ 8
5.1FRAME.................................................................................................................................................................................... 8
5.2REFRIGERANTCIRCUIT ........................................................................................................................................................... 8
5.3COMPRESSORS....................................................................................................................................................................... 8
5.4AIRSIDEEXCHANGERS............................................................................................................................................................ 8
5.5FANS ....................................................................................................................................................................................... 8
5.6USERSIDEHEATEXCHANGERS ............................................................................................................................................... 8
5.7ELECTRICBOX ......................................................................................................................................................................... 8
5.8CONTROLSYSTEM .................................................................................................................................................................. 8
5.9MONITORINGANDPROTECTIONDEVICES ............................................................................................................................. 9
5.10HYDRAULICCIRCUIT ............................................................................................................................................................... 9
5.11FANSPEEDCONTROL ............................................................................................................................................................. 9
6AVAILABLEVERSIONS......................................................................................................................................................... 9
6.1OPTIONALACCESSORIES ........................................................................................................................................................ 9
7INSTALLATION.................................................................................................................................................................... 9
7.1GENERALITY............................................................................................................................................................................ 9
7.2LIFTINGANDHANDLING....................................................................................................................................................... 10
7.3LOCATIONANDMINIMUMTECHNICALCLEARANCES .......................................................................................................... 10
7.4HYDRAULICCONNECTIONS .................................................................................................................................................. 10
7.4.1Drainageconnection .................................................................................................................................................... 10
7.4.2Servicevalve ................................................................................................................................................................. 11
7.4.3Plantdrainagesystem.................................................................................................................................................. 11
7.4.4Hydrauliccircuit............................................................................................................................................................ 11
7.5REFRIGERANTDIAGRAM ............................................................................................................................................................. 12
7.6ELECTRICALCONNECTIONS .................................................................................................................................................. 12
7.6.1WIRINGTERMINALBLOCK............................................................................................................................................ 12
8STARTUP ..........................................................................................................................................................................14
9USER‐CONTROLINTERFACE..............................................................................................................................................15
9.1SETPOINTADJUSTABLEBYTHEUSER ................................................................................................................................... 15
9.2DISPLAY ................................................................................................................................................................................ 15
9.3LED ....................................................................................................................................................................................... 15
9.4DYNAMICSET‐POINTADJUSTING......................................................................................................................................... 16
9.50‐10VANALOGINPUTFORSET‐POINTREGULATION ........................................................................................................... 16
9.6HYDRAULICPUMPOPERATION ............................................................................................................................................ 17
9.6.1OPERATIONBYTHERMOREGULATOR(Default) ........................................................................................................... 17
9.6.2OPERATIONBYTHERMOREGULATORWITHPERIODICACTIVATION............................................................................ 18
9.6.3CONTINUOUSOPERATION ........................................................................................................................................... 18
9.7ANTIFREEZEPROTECTIONRESISTANCES(IFTHEKAACCESSORYISPRESENT) ...................................................................... 19
9.8ON/OFFREMOTECONTROLANDSUMMER/WINTERMODES.............................................................................................. 19
9.9SANITARYVALVEADJUSTMENT............................................................................................................................................ 19
9.10ACTIVATIONOFSANITARYHOTWATERPRODUCTIONBYDIGITALINPUT ........................................................................... 19
9.11HEATINGMODEONSANITARYACCUMULATION ................................................................................................................. 21

9.12 AUXILIARY ELECTRIC HEATERS OF THE SYSTEM ....................................................................................................................21
9.13 AUXILIARY ELECTRIC HEATER OF SANITARY WATER..............................................................................................................21
9.14 SELECTION MODE OF AUXILIRY ELECTRIC HEATERS..............................................................................................................21
9.15 ACTIVATION OF THE AUXILIARY ELECTRIC HEATERS DURING THE JOINT/IN SUBSTITUTION OPERATION TO THE
COMPRESSOR ...................................................................................................................................................................................21
9.16 INDICATION ON SUMMER/WINTER OPERATION. .................................................................................................................22
9.17 TABLES OF CONFIGURATIONS ALLOWED TO USER AND INSTALLER......................................................................................23
9.17.1 Table of configurations................................................................................................................................................. 23
9.18 ALARMS................................................................................................................................................................................ 24
9.18.1 Water flow switch......................................................................................................................................................... 24
9.18.2 High temperature ......................................................................................................................................................... 24
9.18.3 Anti‐freezing ................................................................................................................................................................. 25
9.18.4 Sensors alarm ............................................................................................................................................................... 25
9.18.5 Timeout inverter ........................................................................................................................................................... 25
9.18.6 ON/OFF remote ............................................................................................................................................................ 25
9.18.7 High pressure................................................................................................................................................................ 25
9.18.8 High pressure flow switch (in series with the compressor outlet probe)....................................................................... 25
9.18.9 Low pressure................................................................................................................................................................. 25
9.19 POWER FAILURE ................................................................................................................................................................... 25
9.20 USER BLOCK ALLARMS TABLE........................................................................................................................................................ 25
10 SHUTDOWNS FOR LONG PERIODS .......................................................................................................................................... 25
11 MAINTENANCE AND PERIODICAL CONTROLS ......................................................................................................................... 26
11.1 ENVIRONMENTAL PROTECTION ........................................................................................................................................... 26
12 WHEN THE UNIT GOES OUT OF SERVICE ................................................................................................................................. 26
13 TECHNICAL DATA ..................................................................................................................................................................... 27
14 ELECTRIC DATA OF THE UNIT AND AUXILIARIES ..................................................................................................................... 28
15 HEAT PUMPS AVAILABLE HEAD PRESSURE ............................................................................................................................. 28
15.1 MODELS HPE 06.................................................................................................................................................................... 28
15.2 MODELS HPE 09.................................................................................................................................................................... 28
15.3 MODELS HPE 12.................................................................................................................................................................... 29
15.4 MODELS HPE 15.................................................................................................................................................................... 29
16 WATER PUMP CURVES ............................................................................................................................................................ 30
16.1 MODELS HPE 06‐09............................................................................................................................................................... 30
16.2 MODELS HPE 12‐15............................................................................................................................................................... 30
17 OPERATING LIMITS .................................................................................................................................................................. 31
17.1 EVAPORATOR WATER FLOW RATE........................................................................................................................................ 31
17.2 COLD WATER TEMPERATURE (SUMMER OPERATION) .........................................................................................................31
17.3 HOT WATER TEMPERATURE (WINTER OPERATION) .............................................................................................................31
17.4 AMBIENT AIR TEMPERATURE ...............................................................................................................................................31
18 CORRECTION FACTORS FOR USE OF GLYCOL .......................................................................................................................... 32
19 DIMENSIONS............................................................................................................................................................................ 32
19.1 MODELS HPE 06.................................................................................................................................................................... 32
19.2 MODELS HPE 09.................................................................................................................................................................... 32
19.3 MODELS HPE 12‐15............................................................................................................................................................... 33
20 WIRING DIAGRAMS ................................................................................................................................................................. 34
20.1 MODELS HPE 06 ‐09.............................................................................................................................................................. 34
20.2 MODELS HPE 12.................................................................................................................................................................... 35
20.3 MODEL HPE 15...................................................................................................................................................................... 36
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21 CR REMOTE KEYBOARD (OPTIONAL ACCESSORY)................................................................................................................... 37
21.1 CONNECTION OF THE CRH KEYBOARD TO THE MINICHILLER................................................................................................37
22 DOUBLE SET‐POINT KIT (OPTIONAL ACCESSORY) ................................................................................................................... 37
22.1 PURPOSE AND SCOPE ........................................................................................................................................................... 37
22.2 PARTS AND TECHNICAL CHARACTERISTICS OF THE KIT .........................................................................................................37
22.3 FUNCTIONS OF HUMIDISTAT ................................................................................................................................................38
22.4 SETTING OF MINICHILLER ..................................................................................................................................................... 38
22.5 NOTES FOR INSTALLATION.................................................................................................................................................... 38
22.6 ADJUASTABLE SET‐POINT ..................................................................................................................................................... 39
22.7 COMMUTATION ................................................................................................................................................................... 39
22.8 WIRING DIAGRAMS .............................................................................................................................................................. 40
22.8.1 Wiring diagram without external relay connection ......................................................................................................40
22.8.2 Wiring diagram with external relay connection............................................................................................................40
22.9 HUMIDISTAT CONNECTION ..................................................................................................................................................41
22.10 HYDRAULIC DIAGRAM TYPE................................................................................................................................................ 41
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The HPE manual contains all the necessary information for the better use of the equipment 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basicinformationasfortheinstallation,theoperationandthemaintenanceoftheN‐i‐HWAK/WPV2/V2+
units.Itisaddressedtomachineoperatorsanditenablesthemtousetheequipmentefficiently,eveniftheydonothaveany
previousspecificknowledgeofit.
Thismanualdescribesthecharacteristicsoftheequipmentatthetimeitisbeingputonthemarket;therefore,itmaynotcapture
latertechnologicalimprovementsintroducedbyA2B Accorroni E.G.aspartofitsconstantendeavourtoenhancethe
performance,ergonomics,safetyandfunctionalityofitsproducts.
A2B Accorroni E.G.,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.
A2B Accorroni E.G.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.
A2B Accorroni E.G.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.
Indicatesprohibitedoperations.
Indicatesimportantinformationthattheoperatorhastofollowinordertoguaranteethecorrectoperationofthe
equipmentincompletesafety.
2SAFETYLAWS
A2B Accorroni E.G.’sequipmentsandtheircomponentpartshavebeendesignedincompliancewiththeharmonisedECnormsin
forceandwithotherEuropeanandnationalnormsasrequiredbytheCouncilDirective(2006/42/CEandlateramendments).
Theequipmentsmeetalsothefollowingrequirements:
•UNIENISO121100
•UNIENISO13857
•UNIEN378‐1,378‐2,378‐3and378‐4Rules
•UNIEN12735‐1Rule
•CEIEN60204‐1Rule
•CEIEN61000‐6‐1Rule
•CEIEN61000‐6‐3Rule
•97/23/CE,2006/95/CE,2006/95/CE,2006/95/CE,2006/96/CECommunityDirectives
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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.

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4GENERALSAFETYGUIDELINES
BeforebeginningtooperateonHPE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.
Children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,whichinclude89/391/CEE,
89/686/CEE,89/655/CEE,86/188/CEEand77/576/CEEdirectives.Everyemployershallimplementsuchprovisionsandensure
thatworkersrespectthem:
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HPE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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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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5TECHNICALCHARACTERISTICS
TheHPEwaterchillersandheatpumpsseriesaredesignedforapplicationsinresidentialandcommercialareas,Theseunitsare
extremelyversatileandcanoperateinheatpumpmodewiththeabilityofproducinghotwateratatemperatureof 55°C for
environmental heating and sanitary applications. The INVERTER compressor with brushless DC motor technology, matched
with electronic expansion valve, pump and variable speed blower are generally used for optimizing the power
consumptionandefficientoperationoftherefrigeratingcomponents.
5.1 FRAME
AllHPE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frameisself‐supportingwithremovablepanels.Allscrewsandrivetsforoutdoor
installationsareingalvanizedsteel.
5.2 REFRIGERANTCIRCUIT
TherefrigerantgasusedintheseunitsisR410A.Therefrigerantcircuithasbeenmanufacturedbymeansofinternationalprimary
brandscomponentsandaccordingtotheUNIEN13134Ruleconcerningweldingprocedures.Therefrigerantcircuitincludes:4
wayreversecyclevalve,electronicexpansionvalve,liquidseparator(models09,12and15),liquidreceiver,valvesfor
maintenanceandcontrol,pressuresafetydeviceaccordingtoPEDregulation,pressuretransducerstoaccuratelyadjustthe
evaporatingandcondensingpressures,filtersforthrottlingvalvetoavoiditsclogging.
5.3 COMPRESSORS
TheusedDCinvertercompressorsarearotaryhermetictype(for06and09models)andtwinrotary(forthe12model),scroll(for
the15model)designedtobeusedwithR410refrigerant.Thecompressorsareallsuppliedwithcrankcaseheaterandthermal
overloadprotection.Theyaremountedonarubbermaterialactingasashockabsorbers.
Thecompressorsaremountedinaseparatechamberinordertobeseparatedfromtheairstreamtoreducethenoise.The
crankcaseheaterisalwayspoweredwhenthecompressorisinstand‐by.Theinspectionispossiblethroughthefrontalpanelof
theunitthatallowthemaintenanceofthecompressorseveniftheunitisworking.
5.4 AIRSIDEEXCHANGERS
Theairsideexchangersaremadeupofcopperpipesandaluminiumfins.Thediameterofthecopperpipesis7mmforthemodel
09and5/16”fortheothermodels12and15,thethicknessofthealuminiumfinsis0,1mm.Thetubesaremechanicallyexpanded
intothealuminiumfinstoimprovetheheatexchangefactor.Thegeometryofthesecondensersguaranteealowairsidepressure
dropand,then,theuseoflowrotation(andlownoiseemission)fans.
5.5 FANS
Thefansareaxialtypewithaluminiumaerofoilblades.Theyarestaticallyanddynamicallybalancedandsuppliedcompleteofthe
safetyfanguardaccordingtotheEN60335Rule(safetyforelectricalapparatusofdomesticandsimilaruse).Theyaremountedon
theunitframebyinterpositionofrubbervibrationdampers.TheelectricmotorsareallbrushlessDCtypewith8poles(about
200/1000rpm).Themotorsaredirectlydrivenwithanintegratedthermaloverloadprotection.Theprotectionclassofthemotors
isIPX4.
5.6 USERSIDEHEATEXCHANGERS
TheusersideheatexchangersaremadeupofAISI316stainlesssteelbraze‐weldedplatestype.Theuserheatexchangersare
factoryinsulatedwithflexibleclosecellmaterialandcanbeequippedwithantifreezeheater(KAoptional).Eachheatexchangeris
providedwithatemperaturesensorworkingasantifreezeprotectionthatactivatesthecirculator,eveninthecasewhentheunit
isturnedoffwhentheconditionssetinthecontrollerhavebeenoccurred.
5.7 ELECTRICBOX
TheelectricboxismanufacturedaccordingtoaccordingcurrentEuropeanUnionlaws.Theaccessibilitytotheboardispossible
afterremovingthefront,sideandtoppanelsoftheunit.TheprotectiondegreeisIP24.Theterminalboardissuppliedwith
voltagefreecontactsforremoteON‐OFF,winter/summerchangeover,auxiliaryresistance,sanitarywatertemperaturesensor
controlofexternal3‐wayvalveandfreecontactsforremotecontrolpanelandforthemanagementofthedualsetpointof
operation.
5.8 CONTROLSYSTEM
All HPE units are standard supplied with a microprocessor adopting an overheating control logic program throughthe
electronicexpansionvalvewhichisdrivenbythepressuretransducerssignals.Themicroprocessorisalsocapableofcontrollingthe
followingfunctions:watertemperatureregulation,antifreezeprotection,compressors’timesetting,compressorautomatic
starting sequence, alarm reset, alarm management and operating 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

9
with the INVERTER technology and the on board sensors continuously monitor and adapt the performance of the inverter
compressor,ofthepumpandofthefan(2fansasfortheHPE12and15models)accordingtothevalueofcoolingpoweratany
workingconditionsrequestedbytheuser.
TheINVERTERsystemallowtoreducetheplant’swatercontenttotheminimum,thatisfromtheusualvalue12‐15l/kWto18
litersforthe06modelorto25liters(forthe09model)orto35litersforthe12modelandto45litersforthemodel15,in
ABSOLUTE,oftheHPEunits.Becauseofthereducedwatercontent,theHPEunitscanbeinstalledinplantswithoutwatertank
withadvantagesintermsoftheappliance’sreducedsize,theinstallationspace,heatlossandinstallationandmaintenance
costs.
5.9 MONITORINGANDPROTECTIONDEVICES
Allunitsarestandardsuppliedwiththefollowingmonitoringandprotectiondevices:returnwatertemperaturesensorinstalledat
thereturnwaterpipelinefromtheplant,operatingandantifreezesensorinstalledattheoutletpipeofthewatertotheplant,
highpressuretransducer,lowpressuretransducer,compressor’sinletandoutlettemperaturesensors,compressorsthermal
protectiondevice,fansthermalprotectiondevice,watersideinstalledwaterflowswitchtoprotecttheevaporator,highpressure
HPflowswitch.
CAUTION:TheINVERTERcontrolsystemisabletomanageintheplanttheminimumwatercontentsuptoavalue
of18litersforthe06model,of25litersforthe09model,of35litersforthe12model,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HPEchillersunitsaresuppliedwithanintegratedhydrauliccircuitincludingthecirculatingpump,suitablefor chilled water
utilization and directly run by a controller on board. The circulator is always modulating type, it adopts asynchronous
motor. The hydraulic circuit also includes: expansion vessel, safetyvalve(6bar)andtheautomaticairreleasevalve.
5.11 FANSPEEDCONTROL
Thistypeofcontrolismanagedbythemicroprocessorandisnecessaryforoptimizing thepressure of evaporation/condensation
during summer/winter operationinordertoallowproperrunningoftheunit.
6AVAILABLEVERSIONS
HPE - reversible heat pump with integrated hydronic system (expansion vessel, safety valve, pressure gauge, modulating
pump,flowswitch,automaticairreleasevalveload/unloadvalve).
Availableversions:06,09,12e15.
6.1 OPTIONALACCESSORIES
CRH‐ Remotecontrolpaneltobeinstalledintheroomfortheunitremotecontrolling,withadditionalfunctionsincomparisonto
theoneinstalledonboard;itcanalsorunourhydronicterminalunits.
AG‐ Anti‐vibrationrubberpadtobeinstalledinthechassisoftheunitforpossibleshockabsorption.
KA‐ antifreezingkit(thisaccessoryhavetoberequiredwhentheorderisplacedandhavetobefactoryinstalled).Itismadeup
ofanauto‐heatingcablethermostatedat5°Candwrappedaroundthebaseoftheunitnearthecondensingcoilandtwo
PETheatersinstalledonthesidesoftheplateheatexchanger.
7INSTALLATION
WARNING:AlltheoperationdescribedinnextchaptersMUSTBEDONEBYTRAINEDPEOPLEONLY.Beforeany
operationontheunit,besurethattheelectricsupplyisdisconnected.
7.1 GENERALITY
Wheninstallingorservicingtheunit,itisnecessarytostrictlyfollowtheruleslistedinthismanual,toconformtoallthe
specificationsofthelabelsontheunit,andtotakeanypossibleprecautions.Notobservingtherulesreportedonthismanualcan
createdangeroussituations.
Afterreceivingtheunit,immediatelycheckitsintegrity.Theunitleftthefactoryinperfectcondition;anyeventual
damagehastobequestionedtothecarrierandrecordedontheDeliveryNotebeforesigningit.
A2B Accorroni E.G.hastobeinformed,within8days,oftheextentofthedamage.TheCustomershouldprepareawritten
statementofanyseveredamage.

10
7.2 LIFTINGANDHANDLING
Whenunloadingandinstallingtheunit,itishighlyrecommendedto
avoidanysuddenmoveinordertoprotecttheinnercomponents.
Unitscanbeliftedbymeansofaforkliftor,inalternative,ofbelts,
beingsurenottodamagethelateralpanelsandthecover.Itis
importanttokeeptheunithorizontalduringtheseoperations.
7.3 LOCATIONANDMINIMUMTECHNICALCLEARANCES
TheallHPEunitsaredesignedforoutdoorinstallation:anycoverovertheunitandlocationneartrees(eveniftheypartiallycover
theunit)hastobeavoidedinordertopreventairrecirculation.Itisadvisabletocreateaproperbasement,withasizesimilarto
unitfoot‐print.Unitvibrationlevelisverylow:itisadvisablehowever,tofitarigidrubberbandbetweenbasementandunitbase‐
frame.Itisalsopossibletoinstallanti‐vibrationsupports(springsorrubbers)tokeepvibrationsataverylowlevel.Absolutecare
hastobetakentoensureadequateairvolumetothecondenser.Re‐circulationofdischargeairhastobeavoided; failure to
observe this point will result in poor performance or activation of safety controls. For these reasons it is necessaryto
observethefollowingclearances:
ModelsAB*CDE**
HPE061500500400400500
HPE091500500400400500
HPE121500500400400500
HPE151500500400400500
*Therecommendedminimumdistanceforinstallationandmaintenance.
**Therecommendedminimumdistanceforassistanceandmaintenance
7.4 HYDRAULICCONNECTIONS
Thehydraulicconnectionshavetobeinstalledinaccordancewithnationalandlocalregulations;pipescanbemadeupofsteel,
galvanizedsteelorPVC.Pipeshavetobedesigneddependingonthenominalwaterflowandonthehydraulicpressuredropsof
thesystem.Allpipeshavetobeinsulatedwithclosed‐cellmaterialofadequatethickness.Chillershavetobeconnectedtopiping
bymeansofflexiblejoints.Pipingshouldinclude:
•Holethermometerstomonitorthesystem’stemperature.
•Manualgatevalvestoseparatethechillerfromthehydrauliccircuit.
• Y‐shapedmetallicfilter(tobemountedontheinletpipe)withameshnotlargerthan1mm.
•Charginggroupanddischargevalve,wherenecessary.
WARNING:Makesurethat,whendesigning thepipelengthanddiameter
,
donotexceedthemaximum hea
d
loss
ontheplantside,pleaseseethetechnicaldatagiveninthetableofParagraph12(availablepressurehead).
WARNING:Connectthepipestotheattacksbyusingalwayskeyagainstkeysystem.
WARNING:Unitwaterinletpipehavetobeincorrespondencewiththeconnectionlabelled:”WATERINLET”,
otherwisetheevaporatormayfreeze.
WARNING:ItiscompulsorytoinstallontheWATERINLETconnectionametallicfilterwithameshnotlargerthan
1mm.Shouldthewaterflowswitchbealteredorshouldthefilternotbeinstalled,thewarrantywillnolongerbe
valid.Thefilterhavetobekeptclean,somakesureitiscleanaftertheunithasbeeninstalled,andthencheckit
periodically.
Allunitsarestandardsuppliedwiththewaterflowswitch(factoryinstalled).Shouldthewaterflowswitchbe
altered,removed,orshouldthewaterfilternotbeinstalledontheunit,thewarrantywillbeinvalidated.Please
refertothewiringdiagramforthewaterflowswitchelectricconnections.
7.4.1 Drainageconnection
AllHPEunitshavebeendesignedtousetheirownbaseasadrainpan;aplasticpipefittingisstandardprovidedtobeinstalled
ontothelowerpartoftheunitinthespecialhousingenablingtheconnectionofadrainagepipe.

11
Eachunitisalsoprovided,onthebasementofthehydronickit(accessiblefromtherightsidespanels),withaholethatcanallow
todrainanycondensationthatmayescapefromplumbingpipes.Aswellasthepipesarewell‐insulated,theproductionof
condensateishoweververylowandthereforetheconnectionofadrainagepipetothatholeisnotrequired.
7.4.2 Servicevalve
Youcanusetheservicevalve,whenitisnecessarytorefilltheplantoradapttheconcentrationofglycol.Unscrewthecapofthe
servicevalveandconnecttothehoseapipeof14mm(innerdiameter)connectedtothewaternetwork,andthenloadthe
systembyunscrewingtheknurlednut.Whentheoperationisconcluded,retightentheknurlednutandscrewonthecap.
7.4.3 Plantdrainagesystem
Whenitisnecessarytodraintheplant,closeatfirsttheinletandoutletmanualgatevalves(notsupplied)andthenremovethe
pipesthataredisposedexternallyonthewaterinletandonthewateroutletinordertospillawaytheliquidcontainedintheunit
(foreasieroperation,itisrecommendedtoinstallexternallytwodrainingvalves,onthewaterinletandonthewateroutlet,
betweentheunitandthemanualgatevalves).InthecaseofV2+series,youalsoneedtoconnectahosetotheservicevalveand
makesuretofullydischargetheheatexchangerbythemeanoftheknurlednutasdescribedinparagraph7.4.2.
7.4.4 Hydrauliccircuit
Models:N‐i‐HWAK/WPV2Models:N‐i‐HWAK/WPV2+
A
B
H
F
G
E
D
CA
B
H
F
G
E
D
I
C
KEY
APlateheatexchangerFAirventvalve
BWaterflowswitchGSafetyvalve
CServicevalveHPressuregauge
DPumpIReverse‐flow4‐wayvalve
EExpansionvessel
DrainagepipefittingDrainagepipefittinghousingDrainagepipefittingconnectedtotheunit
Capwithgasket
Knurlednut

12
7.5 Refrigerantdiagram
SE
EEV
LR
IN OUT
4WV
DT
LP HP
ST
M
P
C
LS
OS
FL FL
NRV
CLS
Pr
CCOMPRESSOR
CLSCOMPRESSORLIQUIDSEPARATOR
OSOILSEPARATOR(onlyforthemodels12e15)
STCOMPRESSORINLETTEMPERATURE
DTCOMPRESSOROUTLETTEMPERATURE
HPHIGHPRESSURETRANSDUCER
PrHIGHPRESSUREFLOWSWITCH
LPLOWPRESSURETRANSDUCER
LSLIQUIDSEPARATOR(onlyformodels09,12and15)
4WVVALVEFOINVERTINGCYCLE
LRLIQUIDRECEIVER
EEVELECTRONICEXPANSIONVALVE
NRVNORETURNVALVE(availableonlyforsomemodels)
FLFILTER
MAXIALFAN
SEOUTDOORAIRTEMPERATURE
PCIRCULATORONBOARDUNIT
INWATERINLETTEMPERATURE
OUTWATEROUTLETTEMPERATURE
WARNING:Theunitshouldbeinstalledsothatadequateclearanceisavailableformaintenanceandrepairation.The
warrantydoesnotcovercostsrelatedtoplatformsorhandlingequipmentnecessaryforanymaintenance.
AllmaintenanceandtestingoperationsshouldbecarriedoutonlybyQUALIFIEDPERSONNEL.
Beforeanyoperationontheunit,makesurethepowersupplyisdisconnected.
WARNING:Insidetheunit,therearesomemovingparts.Beespeciallycarefulwhenworkingnearthem,evenifthe
unitisoff.
Thetemperaturesofheadsandexhaustpipingofthecompressorareusuallyhigh.Thereforebecarefulwhen
workingnearcondensingcoils.
Thealuminumfinsareverysharpandcancauseseriousinjuries.
Afterthemaintenanceoperations,closethepanelstightlywiththefasteningscrews.
7.6 ELECTRICALCONNECTIONS
Checkoutthatthepowersupplymeetstheunit’selectricnominaldata(tension,phases,frequency)reportedonthelabelinthe
unit’sright‐sidepanel.Powerconnectionshavetobemadeinaccordancetothewiringdiagramenclosedwiththeunitandin
conformitywiththenationalandinternationalnormsinforce(providingequipmentsasgeneralmagnetothermiccircuitbreaker,
differentialcircuitbreakersforeachelectricline,propergroundingfortheplant,etc.).Powercables,electricprotectionsandline
fuseshavetobesizedaccordingtothespecificationslistedinthewiringdiagramenclosedwiththeunitandintheelectricaldata
containedinthetableoftechnicalcharacteristics(seeParagraph13).
WARNING:Thesupplyvoltage’sfluctuationscannotexceed±10%ofthenominalvalue.Shouldthistolerancenotbe
respected,pleasecontactourtechnicaldepartment.
WARNING:Thepowersupplyhavetorespectthelistedlimits:failingthis,warrantywillterminateimmediately.
Beforeanyoperationontheunit,besurethatthepowersupplyisdisconnected.
WARNING:Thewaterflowswitch(Bcomponentintheprevioushydrauliccircuitandfactoryinstalled)haveALWAYS
tobeconnectedfollowingtheindicationslistedinthewiringdiagram.Neverbridgethewaterflowswitch
connectionsintheterminalboard.Shouldthewaterflowswitchconnectionsalteredornotproperlymade,the
guaranteewillbeinvalidated.
WARNING:Theremotecontrolpanelisconnectedtothewaterchillerbymeansofno.4wireshavinga1,5mm2
section.Thepowersupplycableshavetobeseparatedfromtheremotecontrolwires.Themaximumdistanceis50m.
WARNING:Theremotecontrolpanelcannotbeinstalledinareaswithstrongvibrations,corrosivegases,andexcess
ofdirtinessorhighhumiditylevels.Leavefreetheareanearthecoolingopenings.
7.6.1 WIRINGTERMINALBLOCK
Electricalwiringhavetobedoneonlybyqualifiedpersonnel.
Theelectricalconnectionshavetoberealizedbyqualifiedpersonnel.Theterminalblockislocatedundertheplasticcoveronthe
sideofthehydraulicconnections(forthemodels12and15,itisnecessarytoremovetheprotectivecarter).Thewiringtothe
terminalblockhastoberealizedinaccordancetothebelownotes(thedrawingisforillustration).

13
Theconnectionsindicatedbelowarestandard.Otherconnectionsareshowninthetableseeparagraph9.17.
TerminalTypeConnection
GND Connectthegroundingwire
N1 Connectthepowersupplyneutralwire;
L1 Connectthepowersupplyphasewire;(notethat,inthethree‐phases
versionstherearetwootherterminals,L2andL3)
NC1Digitaloutputwithchangeovercontact
PowersupplyNCterminal(230VAC)for3‐wayvalveforsanitaryhot
waterboiler(usedonlyfor3‐wayvalvewith3contactsforpowersupply
connectiontoswitching‐overtotheplantside)(forfurtherconfiguration
settings,pleasechecktheParagraph9.17)
NDigitaloutputwithchangeovercontact Powersupplyneutralterminal(230VAC)for3‐wayvalveforsanitaryhot
waterboiler(forfurtherconfigurationsettings,pleaserefertoParagraph
9.17)
NO1Digitaloutputwithchangeovercontact PowersupplyNOterminal(230VAC)for3‐wayvalveforsanitaryhot
waterboiler(toswitch‐overthevalvetotheboillerside)(forfurther
configurationsettings,pleaserefertoParagraph9.17)
NC2Digitaloutputwithchangeovercontact
PowersupplyNCterminal(230V,50Hz,5Aresistive,1Ainductive)for3‐
waydoublesetpointvalveforradiantpanels.(optional,touseonlyon
V2series,seeparagraph21)(forfurtherconfigurationsettings,please
refertoParagraph9.17)
N2Digitaloutputwithchangeovercontact Powersupplyneutralterminal(230VAC)for3‐waydoublesetpoint
valveforradiantpanels(optional,touseonlyonV2series,seeparagraph
21.)(forfurtherconfigurationsettings,pleaserefertoParagraph9.17)
NO2Digitaloutputwithchangeovercontact
PowersupplyNOterminal(230V,50Hz,5Aresistives,1Ainductives)3‐
wayvalvedoublesetpointforradiantpanels(optional,touseonlyonV2
series,seeparagraph21.)(forfurtherconfigurationsettings,pleaserefer
toParagraph9.17)
R+ Modbus+signalconnectiontoremotekeyboard
R‐ Modbus‐signalconnectiontoremotekeyboard
12V+ Poweroutputforremotekeyboard(12V,50Hz,500mA)
12V‐ Poweroutputforremotekeyboard(12V,50Hz,500mA)
SEAnalog(ST8)/digital(DI7)inputHumidistatterminalforthedoubleset‐pointregulation(optional)(for
furtherconfigurationsettings,pleaserefertoParagraph9.17)
SEAnalog(ST8)/digital(DI7)inputHumidistatterminalforthedoubleset‐pointregulation(optional)(for
furtherconfigurationsettings,pleaserefertoParagraph9.17)
AEHDigitaloutput(DO3)Sanitarywatersupplementaryheateroutput(230V,50Hz,5A)(for
furtherconfigurationsettings,pleaserefertoParagraph9.17)
AEHDigitaloutput(DO3)Sanitarywatersupplementaryheateroutput(230V,50Hz,5A)(for
furtherconfigurationsettings,pleaserefertoParagraph9.17)
SANAnalog(ST9)/digital(DI8)inputSanitarywaterboilersensorterminal(forfurtherconfigurationsettings,
pleaserefertoParagraph9.17)
SANAnalog(ST9)/digital(DI8)inputSanitarywaterboilersensorterminal(forfurtherconfigurationsettings,
pleaserefertoParagraph9.17)
DO5Digitaloutput(DO5)Outputfordoublesetpointvalvecontrol(230V,50Hz,5Aresistive,1A
inductive)(optionaltouseonlyforV2+series,seeParagraph22.)
DO5Digitaloutput(DO5)Outputfordoublesetpointvalvecontrol(230V,50Hz,5Aresistive,1A
inductive)(optionaltouseonlyforV2+series,seeParagraph22.)
SWDigitalinputSummer/winterswitchingmodeterminalviaremotecontrol(closed=
summer/open=winter);
SWDigitalinputSummer/winterswitchingmodeterminalviaremotecontrol(closed=

14
summer/open=winter)
onoffDigitalinputRemoteon‐offterminal(closed=unitON/open=unitOFF)
onoffDigitalinputRemoteon‐offterminal(closed=unitON/open=unitOFF)
0‐10V+Analoginput(ST10)Inputsignal0‐10V(+)forsetpointadjustment
0‐10V‐ Analoginput(ST10)Inputsignal0‐10V(‐)forsetpointadjustment
8STARTUP
Beforestart‐up:
•Checkouttheavailabilityofthesuppliedwiringdiagramsandmanualsofinstalledapparatus.
•Checkouttheavailabilityoftheelectricalandhydraulicdiagramsoftheplantinwhichtheunitisinstalled.
•Checkthattheshut‐offvalvesofthehydrauliccircuitsareopen.
•Verifythatthehydrauliccircuithasbeenchargedunderpressureandairvented.
•Checkoutthatallwaterconnectionsareproperlyinstalledandallindicationsonunitlabelsareobserved.
•Ensurethatarrangementshavebeenprovidedtodrainthecondensate.
•Checkoutthatallpowercablesareproperlyconnectedandallterminalsarehardlyfixed.
•Checkthatelectricalconnectionsarecarriedoutaccordingtothenormsinforceincludinggrounding.
•Checkoutthatthevoltageistheoneshownintheunitlabels.
•Makesurethevoltageiswithinthelimits(±10%)oftolerancerange.
•Checkoutthatcrankcaseheatersarepoweredcorrectly.
•Checkoutthatthereisnorefrigerantleakage.
•Checkoutthatallthecoverpanelsareinstalledintheproperpositionandlockedwithfasteningscrewsbeforestartup.
WARNING:TheunitmustbeconnectedtotheelectricalnetworkandshouldbeinSTAND‐BYmode(powered)closing
thegeneralswitchinordertooperatethecrankcaseheatersofthecompressorforaminimumof12hoursbefore
startup.(theheatersareautomaticallypoweredwhenthemainswitchisswitchedoff).Thecrankcaseheatersare
workingproperlyif,aftersomeminutes,thetemperatureofcrankcase’scompressorisabout10°C÷15°Chigherthan
ambienttemperature.
WARNING:Neverswitchofftheunit(foratemporarystop)byswitchingoffthemainswitch:thiscomponentshould
beusedtodisconnecttheunitfromthepowersupplyonlyforlengthystoppages(e.g.seasonalstoppages).Besides,
failingthepowersupply,thecrankcase’sresistancesarenotsuppliedthusresultinginapossiblebreakdownofthe
compressorsoncetheunitisswitchedon.
WARNING:Donotmodifytheinternalwiringoftheunitotherwisethewarrantywillterminateimmediately.
WARNING:Thesummer/winteroperatingmodehavetobeselectedatthebeginningoftherelatedseason.Frequent
andsuddenchangesofthisseasonaloperatingmodehavetobeavoidedinordertopreventseveredamagesto
compressors.
WARNING:Whenyoufirstinstallandstart‐uptheunitmakesurethattheunit is
w
orkingproperlyinbothcooling
andheatingmodes.

15
9USER‐CONTROLINTERFACE
Itisusedtoselecttheoperatingmode,andtoresetthemanualresettingalarms.Theoperatingmodechangesas
perthesequencebeloweachtimeyoupresstheModebutton:
off Æcool Æheat Æoff
Ifthesanitarymodeisenabled,thesequenceisasfollows:
offÆcoolÆcool+sanÆheatÆheat+sanÆoff
Duringtheparameters’setting,thisbuttoncanbeusedtorevertBACKtothepreviouslevel.
Itallowsyoutoenterintothesettingmenuparametersandtoselectthecool/summer,heat/winterandsanitary
watersetpointvalue.
UPbutton:Inthesettingmode,thisbuttonallowsyoutomoveuptoahighermenuortoincreasethevalueofa
parameterwhenyouareinthe“edit”mode.
DOWNbutton:Inthesettingmode,thisbuttonallowsyoutoshifttoalowermenuortodecreasethevalueofa
parameterwhenyouareinthe“edit”mode.
9.1 SETPOINTADJUSTABLEBYTHEUSER
SetpointtypeSetpoint(summer/winter)Summerdefault(range)Winterdefault(range)
Firstsetpoint(°C)Coo/Hea7(5÷18)45(35÷55)
Secondsetpoint(°C)Co2/He218(7÷23)35(25÷45)
SanitarySetpoint(°C)San48(25÷55)
Thefunctionalityofthesecondsetpointcanbeusedonlywhenyoupurchasetheproperoptionalkit.
9.2 DISPLAY
InNormalviewdisplaystheoutletwatertemperaturereportedtotenthsofdegrees,orthealarmcodeifatleastanalarmis
active.Incaseofmultiplealarmsactivation,itwilldisplaythefirstalarm,whilethesecondappearswhenthefirstisreset.Intothe
menumode,thedisplaydependsonthecurrentpositionwhereyouare.
9.3 LED
CompressorLED
•ONifthecompressorisrunning
•OFFifthecompressorisoff
•FLASHINGiftimingsareinprogresswaitingforcompressor’sstartup
SanitarywaterLED
•ONifsanitarymodeisactive
•OFFifthesanitarymodeisnotactive
•FLASHINGifsanitaryproductioninprogress(sanitaryvalveisactive)
DefrostingLED
•ONindefrostoperatingmode
•OFFifdefrostingmodeisdisabledorcompleted
•FLASHINGifdefrostingcycleinterval’stimeisinprogress.
AntfreezeresistanceLED•TheLEDisONiftheantifreezeresistanceisactive.
WaterpumpLED•TheLEDisONifthewaterpumpisrunning.
AlarmLED•TheLEDisONifanalarmisactivated.
HeatLED•TheLEDisONiftheunitisintheheatingmodeoperation.
CoolLED•LEDisONiftheunitisinthecoolingmodeoperation.

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9.4 DYNAMICSET‐POINTADJUSTING
Thecontrollercanchangetheset‐pointbyaddingavaluedependingontheoutdoorairtemperaturesensor.Inthiscase,youneed
tochangethevaluesoftheparametersfromb08to b14followingtheindicationsbelow(settingstobedonebytheinstaller):
PrametersofthecontrollerPAr‐>rE‐>
•b08 = dynamicset‐point,enabled = 1/ unabled = 0(mustbedisabledinthecaseoftheuseofclimaticcompensationfromthe
optionalremotekeyboardCRH).
•b09= offsetmaxincoolingmodeoperation.
•b10 =offsetmaxinheatingmodeoperation.
•b11 =Outdoortemperaturesettingincoolingmode.
•b12=Outdoortemperaturesettinginheatingmode.
•b13 =Temperaturedifferenceincoolingmodeoperation.
•b14 =Temperaturedifferenceinheatingmodeoperation.
Curveoftheset‐pointvariationasafunctionoftheoutsidetemperature:
9.5 0‐10VANALOGINPUTFORSET‐POINTREGULATION
Anothertypeofsettingthatallowstochangetheset‐pointbyadding(orsubtracting)avalueinfunctionofthe0‐10Vanaloginput
(ifenabled).Toenablethefunction,youmustsetH21=40,andchangethevaluesoftheparameterb15(range0‐10),takinginto
accountthat:
Temperature

17
‐ifthisinputisat0voltsyouwillhavetheactualsetpoint:setpoint(Coo/Hea)‐b15/2
‐iftheinputisat5voltsthesetpointwillbethesetone(Coo/Hea)
‐iftheinputis10voltsyouwillhavetheactualsetpoint:setpoint(Coo/Hea)+b15/2
The0‐10Vsignalmustbeappliedtotheterminals0‐10V+and0‐10V‐(seethewiringdiagrams).
9.6 HYDRAULICPUMPOPERATION
Thehydraulicpumpcanbesetaccordingtooneofthethreefollowingtypesofoperation:
‐Operationbythermoregulator(default)
‐Operationbythermoregulatorwithperiodicactivation
‐Continuousoperation
Thepumpisswitchedoffimmediatelywiththealarmactivationoftheflowswitchwithmanualreset.
Thepumpisalwaysturnedoniftheantifreezeresistancesarerunningorwhenthehydraulicpumpoperatesinantifreezemode(is
enabledifthewaterregulationtemperaturedecreasesbelow8°C,isdisabledifthewaterregulationtemperatureincreasesabove
10°C).
9.6.1 OPERATIONBYTHERMOREGULATOR(Default)
Duringthisoperatingmode(P03=1,default),thethermoregulatoractuatesthepump;afteratimedelayof20secondsfrom
actuationofthepump,thecompressoralsowillbeactivated.However,inpoweroffcase,thepumpturnsoffwithadelay
timeof120secondsafterthethermoregulatorisinoffstate(theoffmodecorrespondstotheturningoffstateofthe
compressor).
Inthecaseoftheactivationoftheflowswitchalarmswithautomaticresetthepumpisstilloperatingevenifthecompressor
isoff.

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9.6.2 OPERATIONBYTHERMOREGULATORWITHPERIODICACTIVATION
ThefunctionisdisabledifP17=0(default).Ifthepumpissetinoperationbythermoregulator(P03=1,default),itwillbe
activatedperiodicallyforatimeperiodedefinedbytheparameterP17(inseconds)afteracountingtimesetbytheparameter
P16(inminutes),activatedwhenthepumpisturnedoffforsatisfiedthermoregulation.
Inthecaseoftheactivationoftheflowswitchalarmswithautomaticresetthepumpisstilloperatingevenifthecompressor
isoff.
Theperiodicfunctionisalsointerruptedinthecaseoftheinterventionoftheantifreezethermoregulatorthatconstrainsthe
opeartionofthepump.
9.6.3 CONTINUOUSOPERATION
Inthisoperatingmode,enabledifP03=0,thepumpisalwaysturnedon.ItturnsoffonlywhenthereisinOFFstate.

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9.7 ANTIFREEZEPROTECTIONRESISTANCES(IFTHEKAACCESSORYISPRESENT)
Theantifreezeresistances,installedontheoutersurfacesoftheevaporatorplates,activatesevenwhentheunitisswitchedoff
(butenergized)iftheoutletwatertemperaturegoesbelow4°C.Thesameresistancesareswitchedoffwhenthetemperature
measuredbytheoutletwatersensorexceeds6°C.Theheatingcableplacedonthebasementoftheapplianceturnsonwhenthe
outdoorairtemperaturedecreasesbelow4°Corwhentheunitstartsthedefrostingcycle.Itwillbedisactivatediftheoutdoor
temperatureexceeds6°C.
9.8 ON/OFFREMOTECONTROLANDSUMMER/WINTERMODES
Theterminalblockhastwodigitalinputstocontroltheunitviaanexternalconsent.
SW‐SW: Summer/winterswitchingmodeinputviaremotecontrol.Toenablethisfeature,settheparameterH76=1.
Theparameterisprotectedbymaintainerpassword(couldbechangedbytheinstaller).
onoff‐onoff: Remoteon‐offinput.Thefeatureisalreadyenabledbydefault.Removethebridgeconnectionintheterminalblock
toputtheunitinstand‐bymode(insuchastatethecode''E00''willappearonthedisplayoftheunit).Ifthesanitary
operatingmodeisactivated,theon‐offremotefunctionwillswitchoffthemachineprovidedthesanitarysethad
notyetbeenreached(insuchastatetheword''SAN''willappearonthedisplayoftheappliance).
9.9 SANITARYVALVEADJUSTMENT
Toactivatethehotsanitarywaterfunction,besuretoinstallatemperaturesensorinsidethetankandtoconnectittotheSAN‐
SANterminals.Oncethetemperaturesensorisinstalledandconnected,itisnecessarytosettheparameter H10=1,andtoset
theparameterH20=6.Tosettheseparameters,pleaseenterthemaintainerpasswordandthenenterthePRG‐>Pss‐>PAr‐>Cnf‐
>H10/H20 parameters(theconfigurationcouldbedonebytheinstaller).
Ifthehotsanitarywatertemperatureisbelowthesetpointvalue(settedat48°CbydefaultandadjustablebyenteringthePRG‐>
Set‐>SANmenu),theunitactivatesthesanitaryvalveandthefrequencyofthecompressorwillbereducedtotheminimumvalue
for2minutes,insuchawaythatthevalvecandivertthewaterflowtowardsthesanitarytank.Afterthewaterflowisdiverted,
thecompressorchangesthefrequencytothemaximumvaluetillthetemperaturereachesthesetpointofsanitarywater.Once
reachedthesetpointvalue,thevalveswitchestothestand‐bymodeandthecompressorworksnormally.
Whenusinga3‐wayvalvetoswitch‐overwith3contactsforpowersupply,itmustbeconnectedtotheterminalsNO1,N,NC1.
Otherwise,inthecaseofusinga3‐wayvalveforswitching‐overwith2contactsforpowersupply(withspringreturn),itmustbe
connectedtotheterminalsNO1andN.
ClosedcontactNO1meansthatthevalveisenergizedanddivertsthewaterflowtothesanitarywatertank.
OpencontactNO1meansthatthevalveisde‐energizedanddivertsthewaterflowtousers.
Whileshiftingfromdomesticwatertosanitarywater,theoperatingsensorchangesfrom“outletwatersensor”to“sanitarytank
sensor”.Whileshiftingfromthewinteroperatingmodetothesanitaryoperatingmode,thecompressordoesnotswitchoff,and
reachesthehighestfrequency;ontheotherhand,whileshiftingfromthesummeroperatingmodetothesanitaryoperating
mode,thecompressorisswitchedofftowaitforthesafetytiming.
9.10 ACTIVATIONOFSANITARYHOTWATERPRODUCTIONBYDIGITALINPUT
Differently totheuseofthetemperatureprobe,theactivationofthesanitaryhotwaterfunctionmaybebyclosingthedigital
input(SANSANterminals)oftheminichiller.Thisfunctionisrecommendedinthecaseofuseoftwoormoreminichillersin
cascadelinkedtrougthahydronicconnectiontothesameaccumulationtankofsanitaryhotwater;inthiswaytheactivationof
sanitaryhotwaterissettedthroughtheprobeoftheaccumulationtankconnectedtothefirstminichiller,whiletheother
minichillerswillbeautomaticallyenabledbydigitalconsent.Onlyfortheunitswithactivationofsanitaryhotwaterproduction
bydigitalinput,itmustthereforesetH20=0,H45=28,H54=128.Foreachminichiller(exceptthelastoneofthecascade),you
mustusearelay(notincluded),controlledbytheoutput230VACNO1andNoftheterminalblock,thatcanenablethroughitsfree
contactsCOMandNOtheSANSANdigitalinputofthefollowingminichillerinthecascade.Pleaserefertothewiringdiagram
belowforsuchconfiguration.