Hitachi DXF-2.0A1 Instruction Manual

P5417151
Operation Installation
& Maintenance
Manual
VRF HEAT PUMP AIR
CONDITIONERS
- DX-Kit -
CONTROL BOX
EXPANSION VALVE BOX
Type Power Source Model
DX-Kit
(for General
AHU
Connection)
220-240V/1ϕ/50Hz
220V/1ϕ/60Hz
DXF-2.0A1
DXF-4.0A1
DXF-6.0A1
DXF-10.0A1
DXF-20.0A1
DXF-30.0A1
IMPORTANT:
READ AND UNDERSTAND
THIS MANUAL BEFORE
INSTALLING THIS HEAT
PUMP AIR CONDITIONER.
KEEP THIS MANUAL FOR
FUTURE REFERENCE.

Declaration of Conformity
(Manufacturer’s Declaration)
Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.
Add.:No.218,Qianwangang Road,Economic and Technological Development Zone, Qingdao, China
declares under its sole responsibility that the air conditioning models to which this declaration relates:
DXF-2.0A1, DXF-4.0A1, DXF-6.0A1
DXF-10.0A1,DXF-20.0A1,DXF-30.0A1
are in conformity with the following standard(s) or other normative document(s), provided that
these are used in accordance with our instructions:
EN 60335-1
EN 60335-2-40
EN 62233
EN 55014-1
EN 61000-3-2
EN 61000-3-3
EN 55014-2
following the provisions of:
2006/42/EC
2014/30/EU
2012/19/EU
2011/65/EU
Directives, as amended.
Manufacturing number and manufacturing year: refer to model
Nameplate. Notes:
This declaration becomes invalid, if technical or operational modifications
are introduced without the Manufacturer's consent.
Johnson Controls Hitachi Air Conditioning Europe SAS is authorised to Compile the Technical
Construction File.
Add. : 2 Rue de Lombardie, Parc Aktiland II 69800 Saint-Priest, France
Name, Surname:
Position/ Title: Director
Date: July 25, 2019

INDEX
Important Notice...................................................................................................................................................2
1 Safety Summary .............................................................................................................................................3
2 System Description.........................................................................................................................................5
2.1 System Overview ...................................................................................................................................5
2.2 Product Line-up......................................................................................................................................7
2.3 Factory-Supplied Accessories................................................................................................................8
2.4 Limitation of Installation and AHU ..........................................................................................................9
2.5 CapacityControlMode......................................................................................................................... 11
3 Transportation and Handling.........................................................................................................................16
3.1 Transportation ......................................................................................................................................16
3.2 Installation Location..............................................................................................................................16
3.3 Dimension Data....................................................................................................................................16
3.4 Installation Method ...............................................................................................................................16
3.5 ThermistorInstallation..........................................................................................................................18
4 Refrigerant Piping Work................................................................................................................................19
4.1 Piping Materials....................................................................................................................................19
4.2 Piping Connection ................................................................................................................................19
5 ElectricalWiring ............................................................................................................................................20
5.1 GeneralCheck .....................................................................................................................................20
5.2 ElectricalWiringConnection ................................................................................................................20
5.3 ControlBoxTerminalBlock ..................................................................................................................21
5.4 ExpansionValveBox............................................................................................................................21
5.5 TerminalBlockConnectionandRemarks ............................................................................................22
6 OptionalSettingandInput/OutputSetting ....................................................................................................23
6.1 OptionalSettingandInput/OutputSettingonWiredController............................................................23
6.2 InitializationofOptionalSettingandInput/OutputSettingbyWiredController ....................................23
6.3 OptionalSettingandInput/OutputSetting............................................................................................23
6.4 InputSetting .........................................................................................................................................26
6.4.1 RemoteControlON/OFFFunction .............................................................................................26
6.4.2 ControlbyField-SuppliedRoomThermostat(Settingindication01/02).....................................29
6.4.3 CoolingorHeatingOperationModeSetting(Settingindication07) ...........................................30
6.5 OutputSetting ......................................................................................................................................31
7 Setting of DIP Switches ................................................................................................................................32
8 Test Run........................................................................................................................................................33
9 Warranty Policy and Disclaimer ....................................................................................................................33

P5417151-rev.11
IMPORTANT NOTICE
Correct Disposal of this product
Thismarkingindicatesthatthisproductshouldnotbedisposedwithother
householdwastes.Topreventpossibleharmtotheenvironmentorhuman
healthfromuncontrolledwastedisposal,recycleitresponsiblytopromotethe
sustainablereuseofmaterialresources.Toreturnyouruseddevice,pleaseuse
the return and collection systems or contact the retailer where the product was
purchased. They can take this product for environmentally safe recycling.
< Signal Words >
● Signalwordsareusedtoidentifylevelsofhazardseriousness.
Denitionsforidentifyinghazardlevelsareprovidedbelowwiththeirrespectivesignalwords.
: DANGERindicatesahazardoussituationwhich,ifnotavoided,
will result in death or serious injury.
: WARNINGindicatesahazardoussituationwhich,ifnotavoided,
could result in death or serious injury.
: CAUTION,usedwiththesafetyalertsymbol,indicatesahazardoussituationwhich,
if not avoided, could result in minor or moderate injury.
: NOTICEisusedtoaddresspracticesnotrelatedtopersonalinjury.
: NOTEisusefulinformationforoperationand/ormaintenance.
DANGER
WARNING
CAUTION
NOTICE
NOTE
ENGLISH

2 P5417151-rev.1
●HITACHI pursues a policy of continuing improvement in design and performance in its products.
Assuch,HITACHIreservestherighttovaryspecicationswithoutnotice.
● HITACHIcannotanticipateeverypossiblecircumstancethatmightinvolveapotentialhazard.
●This product is designed for standard air conditioning applications only. Do not use this product for
anything other than the purposes for which it was intended for.
●The installer and system specialist shall secure safety against refrigerant leakage according to local
regulationsandstandards.Thefollowingstandardsmaybeapplicable,iflocalregulationsarenot
available.InternationalOrganizationforStandardization:(ISO5149orEuropeanStandard,EN378).
Nopartofthismanualmaybereproducedwithoutwrittenpermission.
●This product shall comes with a full complement of the appropriate Safety, Danger, and Caution,
Warnings.
● Ifyouhavequestions,pleasecontactyourdistributorordealer.
● Thismanualprovidescommondescriptions,basicandadvancedinformationtomaintainandservice
this product which you operate as well for other models.
●This product hasbeendesignedforaspecictemperaturerange.Foroptimumperformanceandlong
life, operate this product withintherangeinthetablebelow.
Temperature
Maximum Minimum
Cooling Operation Indoor 32°CDB/23°CWB 21°CDB/15°CWB
Outdoor 48°CDB -10°CDB
Heating Operation Indoor 27°CDB 15°CDB
Outdoor 15°CWB -20°CWB
DB:DryBulb,WB:WetBulb
* The temperature may change depending on the outdoor unit.
Important Notice
● Thismanualshouldbeconsideredasapermanentpartoftheairconditioningequipmentandshouldremain
with the air conditioning equipment.
Product Inspection upon Arrival
1. Upon receiving this product, inspect it for any damages incurred in transit. Claims for damage, either
apparentorconcealed,shouldbeledimmediatelywiththeshippingcompany.
2. Checkthemodelnumber,electricalcharacteristics(powersupply,voltage,andfrequencyrating)and
any accessories to determine if they are correct.
3. Thestandardutilizationofthisproductshallbeexplainedintheseinstructions.
4. Please contact your local agent or contractor as any issues involving installation, performance, or
maintenance arise. Performing any mechanical alterations on this product without the consent of the
manufacturer will render your warranty null and void.

P5417151-rev.13
1 Safety Summary
●ThisproductisforspeciedusewithincombustiblerefrigerantR410A.UserefrigerantR410Ain
therefrigerantcycle.Donotchargeoxygen,acetyleneorotherammableandpoisonousgases
intotherefrigerantcyclewhenperformingaleakagetestoranair-tighttest.Thesetypesofgases
areextremelydangerousandcancauseanexplosion.Itisrecommendedthatcompressedair,
nitrogenorrefrigerantbeusedforthesetypesoftests.
●Donotpourwaterintotheindoororoutdoorunit.Theseproductsareequippedwithelectrical
parts.Ifpoured,itwillcauseaseriouselectricalshock.
●Donottouchoradjustsafetydevicesinsidetheindoororoutdoorunits.Ifthesedevicesare
touchedorreadjusted,itmaycauseaseriousaccident.
●DonotopentheservicecoveroraccesspanelfortheindoororoutdoorunitswithoutturningOFF
themainpowersupply.
●Refrigerantleakagecancausedi󰀩cultywithbreathingduetoinsu󰀩cientair.TurnOFFthemain
switch,extinguishanynakedamesandcontactyourservicecontractor,ifrefrigerantleakage
occurs.
●Theinstallerandsystemspecialistshallsecuresafetyagainstrefrigerantleakageaccordingto
localregulationsorstandards.
●UseanELB(ElectricLeakageBreaker).Intheeventofafault,thereisdangerofanelectricshock
orareifitisnotused.
●Donotinstalltheoutdoorunitwherethereisahighlevelofoilmist,ammablegases,saltyairor
harmfulgasessuchassulphur.
●Thisproductisdesignedforindoororoutdoorinstallation.Allwiresshouldbeprotectedfrom
outdoorenvironment.
●DonotperforminstallationworkwithoutreferringtothisInstallationManual.Iftheinstructions
arenotfollowed,itmayresultinawaterleakage,electricshockorre.
●Securethesu󰀩cientlystrongfoundationwheninstalling.Ifnot,itmayleadtofallingoftheunit
andinjury.
●Donotinstallwheregenerationorowingofammablegasmaybedetected.Itmaycauseare.
●Donotsteporputanymaterialontheproduct.
●Whenusingrefrigerant,wearleatherglovestopreventcoldinjuries.
●Checktherefrigerantleakage.TherefrigerantR410Aisincombustible,non-toxicandodorlessof
HFCgas.However,ifleakageoccursandgasllsaroom,itmaycausedi󰀩cultywithbreathing
duetoinsu󰀩cientair.
●Asktheelectricalshopwherethequaliedelectricalengineerisprovidedforelectricalworkto
avoidanelectricalshockandredisaster.
●PerformelectricalworkaccordingtoInstallationManualanduseallrelevantregulationsand
standards.Ifnot,itmaycauseanelectricalshockorre.
●Fixthecablessecurelywiththecordclamp.Externalforcesontheconnectorsmayleadtoare.
●PowersupplyisturnedOFFbeforeelectricalwiringworkoraperiodicalcheckisperformed.
●Protectthewiresandelectricalpartsfromratsorothersmallanimals.Ifnot,ratsmaygnawatthe
unprotectedpartsandattheworst,aremayoccur.
●Placetheexpansionvalveboxcableawayfromthepowersourcecabletoavoidmalfunction.
ENGLISH

4 P5417151-rev.1
●Donotuseanysprayssuchasinsecticide,lacquer,hairsprayorotherammablegaseswithin
approximately1mfromthesystem.
●Ifcircuitbreakerorfuseisoftenactivated,stopthesystemandcontactyourservicecontractor.
●Donotperforminstallationwork,refrigerantpipingwork,drainpipingandelectricalwiring
connectionwithoutreferringtoourinstallationmanual.Iftheinstructionsarenotfollowed,itmay
resultinawaterleakage,electricshockorare.
●Checkthatthegroundwireissecurelyconnected.Iftheunitisgroundedincorrectly,itcauses
electricshock.Donotconnectthegroundwiringtogaspiping,waterpiping,lightningconductor
orgroundwiringfortelephone.
●Connectafuseofspeciedcapacity.
●Donotputanyforeignmaterialontheunitorinsidetheunit.
●Makesurethattheoutdoorunitisnotcoveredwithsnoworice,beforeoperation.
●Beforeperforminganybrazingwork,checktoensurethatthereisnoammablematerialaround.
Whenusingrefrigerantbesuretowearleatherglovestopreventcoldinjuries.
●Protectthewires,electricalparts,etc.fromratsorothersmallanimals.
Ifnotprotected,ratsmaygnawatunprotectedpartsanditmaycauseare.
●Fixthecablessecurely.Externalforcesontheterminalsmaycauseare.
WARNING
●Donotinstalltheindoorunit,outdoorunit,wiredcontrollerandcablewithinapproximately
3metersfromstrongelectromagneticwaveradiatorssuchasmedicalequipment.
●Supplyelectricalpowertothesystemtoenergizetheoilheaterfor12hoursbeforestart-upaftera
longshutdown.
●Provideastrongandcorrectfoundationsothat;
a. Theoutdoorunitisnotonanincline.
b. Abnormalsounddoesnotoccur.
c. Theoutdoorunitwillnotfalldownduetoastrongwindorearthquake.
●Donotfastenarenuthard.Itmaycausebreakagewithageddeteriorationandrefrigerant
leakage.Useaspeciedarenut.
●Theapplianceisnottobeusedbychildrenorpersonwithreducedphysical,sensoryormental
capabilities,orlackofexperienceandknowledge,unlesstheyhavebeengivensupervisionor
instructionconcerninguseoftheappliancebypersonresponsiblefortheirsafe.
●Supervisechildrenandpreventthemfromplayingwiththeappliance.
●Theapplianceshouldnotbeinstalledinthelaundry.
● Itisrecommendedthattheroombeventilatedevery3to4hours.
● Seebelowfortheheatpumpairconditioneroperationrange.
Installationaltitude:lessthan1000meters
Frequencyofsupplypower:within±1%Hzofratedfrequency
Transportstoragetemperature:within-25to55°C
● AlltheA-weightedemissionsoundpressurelevelatworkstationsmustbe70dB(A)orless.
NOTICE

P5417151-rev.15
2 SystemDescription
DX-Kitisspeciallydesignedtoallowconnectionofdirectexpansioncoils(DXcoil)inaeld-suppliedAir
HandlingUnit(AHU)toINVERTER-DRIVENMULTI-SPLITSYSTEMAIRCONDITIONERSoutdoorunitsfor
cooling and heating applications.
2.1 System Overview
DX-KitiscomposedofControlBoxforsystemcontrolwithPCBandalltheelectronicstu󰀨,andExpansion
ValveBoxforrefrigerantcyclecontrolinwhichanelectricalexpansionvalveislocated.Thefollowinggure
showsaninstallationexampleforthesystem.
MulticombinationwithAHUandstandardindoorunit
●TheinstallationdistancebetweentheDX-KitandtheAHUmustbeasshortaspossible.
●Thedistancebetweentheunitordevicewithheatexchangerandtheexpansionvalveboxforthe
pipinglengthmustbe5morless.Becertaintheelevationdi󰀨erencebetweentheunitordevice
withheatexchangerandtheexpansionvalveboxdoesnotexceed2m.
●Installationdistancebetweenthecontrolboxandtheunitordevicewithheatexchangermustbe
shortenoughsothatthethermistorssensingarenotdistorted.
●Thethermistorcablemustnotbeinstalledinthesameductingaspowerorcontrolcables.
Fig.2.1 System Overview (1)
●SelectanappropriateAHUwithappropriatespecicationsandcompatibilitywithregulations.Matchwith
rightDX-Kitandoutdoorunits,ifnottheperformance,operationreliabilityandLifetimeofentireAHU
systemmaybeinuenced.
●ThetemperatureoftheheatexchangerinsidetheAHUmaybecomedownto-20°Candthedischargeair
temperaturemaybecome0°Cduringcoolingoperation.ThecomponentsandmaterialsinsidetheAHU
shallbecompatiblewiththetemperature.Notethatdewcondensationontheheatexchanger,AHUmain
bodyandtherefrigerantpipeoccurs.DrainandinsulatetheAHUandpipeproperly.
●ThetemperatureoftheheatexchangerinsidetheAHUmaybecomeupto120°Candthedischargeair
temperaturemaybecome60°Cduringheatingoperation.ThecomponentsandmaterialsinsidetheAHU
shallbecompatiblewiththetemperature.
●The performance may not reach due to outside temperature limitation and protection for outdoor units.
●Interlock the AHU with the system to protect the equipment when the system error occurs.
Ti
Capacity
Ratio W1
Capacity
Ratio W2
ENGLISH

6 P5417151-rev.1
Item Description Item Description
1 Outdoor Unit 10 Outdoor-Indoor Communication
2 DX-Kit 11 Standard Indoor Unit
3ControlBox 12 ControlWiresForElectricalExpansionValve
4ExpansionValveBox 13 Wired Controller Communication
5Wired Controller 14 Control Wires For AHU
6AHU 15 Outlet Air Thermistor
7HeatExchanger 16 Inlet Air Thermistor
8 Liquid Line 17 Liquid Pipe Thermistor
9 Gas Line 18 Gas Pipe Thermistor
SinglecombinationwithAHU,forDXF-30.0A1(22-30HP)
Fig.2.2 System Overview (2)
SinglecombinationwithAHU
NOTE:
RefertoSection5.5whenconnectwiresfromtwoExpansionValveBoxestothesameterminalofacontrol
box.
Capacity
Ratio W2
Capacity
Ratio W2