Hallowell Acadia 024 User manual

Hallowell International 110 Hildreth Street, Bangor, ME 04401
t:[phone] --- f:[phone] --- [e-mail] --- www.gotohallowell.com
Last Revised 03.25.09

50‐00394‐E

CONTENTS
1

InstallationChecklist3

SafetyConsiderations6


InstallationRecommendations6


Installation 7
Step1–CheckEquipmentandJobSite7
UnpackUnit7
InspectEquipment7
Step2–InstallonSolid,LevelMountingPad7
Step3–ClearanceRequirements7
Step4–CheckIndoorExpansionDeviceandInstallAirHandlingUnit8
AirHandlerInstallation
8
Step5–MakePipingConnections9
RefrigerantTubingandFilterDryer9
PrecautionsDuringLineSetInstallation9
SweatConnection10
LeakTesting10
Evacuation10
FinalTubingCheck11
Step6–MakeElectricalConnections11
RouteGroundandPowerWires11
ConnectGroundandPowerWires11
RouteControlWiring11
ConnectControlWiring11
ConfiguringYourHeatPumpComponents12
FinalWiringCheck12
Step7–ChargeUnitandStartup12
Step8–CheckCharge14
UnitCharge14
HeatingCheckChargeProcedure14
Step9–FinalChecks14
Extras15
HydronicCoilSupplementalHeat15
HallowellControlTimers16

Troubleshooting17
ControlCodeErrors17
HeatingModeOperation18
CoolingModeOperation19

AppendixA–Settings20
Figure1–FactorySuppliedAirHandlerControlBoard20

CONTENTS
2
HallowellTXVKitInstallationInstructions20
Figure2–AirFlowChartforAirHandler21
Figure3–ElectricHeatAirflowTapsforFactorySuppliedAirHandler21
Figure4–ControlJumpers22
Figure5–ThermostatSettings23
ThermostatSettingDescriptions24

AppendixB–WiringDiagrams25
Figure6–LineVoltage25
Figure7–HallowellProprietaryControl26
Figure8–AirHandlingUnit27
Figure9–Thermostat27
Figure10–EntireControl28

AppendixC–AcadiaChargingR410A29
Figure11–HallowellAcadiaChargingChart29
Figure12–Pressure/TemperatureChartR410A30

AppendixD–OutdoorUnitMounting31
Figure13–TypicalUnitMounting31

AppendixE–AcadiaComponents32
Figure14–AcadiaComponents32

AppendixF–EWCZoneControl33
Figure15–EWCZoneControlWiring33

AppendixG–SpecificationSheets34

ContractorCheckList38


DataSheet 39

INSTALLATIONCHECKLIST
3
PleaseCheckorfilloutasCompleted
PIPINGCONNECTIONS
Ensurebothvaporandliquidlinesarefullyinsulatedseparatelywithatleast½”wallinsulation.
Ensuretheliquidlinefilterdrierisinstalledneartheairhandler,andinsulatedaswell.
Ifaverticalriserof10’ormoreispresentonthelineset,thelinesetmustbeproperlytrappedtopreventoil
sluggingtothecompressors;goodpracticeinanyriser.
Whenmakingbrazedconnections,tricklenitrogenthroughthesystem(e.g.2PSI)tomaintaincleanbrazejoints
andeliminatecarbonizationinsidethepipingduringthebrazeprocess.TheAcadiasystemcomespre‐charged
with50PSIofdrynitrogen.Thiscanbeusedfornitrogentricklingbycrackingtheservicevalvesslightly.
AIRHANDLER
Installindoorairhandler,ensuringproperductsealing,insulation&distribution.
Ensureallregisters,supplyandreturn,areopenandunblocked.
Ensureaductflexconnectorisusedtoeliminatevibrationtransmissiontothehome.
Ensureaproperairfilterisinstalledonthereturnsideoftheairhandler.
Ensurecondensatedrainisinstalledproperly,andtrapped.
Run10‐conductor(minimum),18AWGcontrolwiringfromairhandlertothethermostat,andfromairhandler
tooutsidecondenserunit.
Connectcontrolwiringfollowingcolorcodesprovidedintheinstallmanual,AppendixB.
Disconnectthelow‐voltageleadsfromthetransformerprovidedintheairhandlerfromtheairhandlercontrol
board24VACandCommonterminals.Line‐voltageleadstothetransformermustremainconnectedtopower
theECMblowermotor.
Connect24VACand24Cprovidedfromoutdoorunittothe¼”terminalslabeledCOMand24VAContheindoor
AHUcontrolboard(seeninAppendixA,FIG1).
Ensuretheelectricalservicetotheairhandlerisadequateforboththeairhandlerandelectricheatkit,ifoneis
installed,perNECand/orlocalcodes.
Ensureappropriateelectricaldisconnectsizeisinstalled,perNECand/orlocalcodes.
EnsuretheHP/ACjumperontheairhandlercontrolboardissettoHP(HeatPump).
Ifanelectricheatkitisinstalled,ensuretheHEAT/NOHEATJumperontheairhandlercontrolboardissettothe
HEATside.LeavingthisjumperonNOHEATdisablesallauxiliaryheatrelays.
SetairflowjumpersinairhandlerinaccordancewithAppendixA.
THERMOSTAT
Installthermostatinalocationwhereitwillnotbedirectlyexposedtoconditionedairordraftsfromdoors
and/orwindows.
Insulatebetweenthebaseplateofthethermostatandthewalltopreventdraftsfromaffectingthethermostat.
EnsurethatajumperbetweenW2andW/Eisnotinstalledonthethermostat.
EnsurethatajumperbetweenRCandRHisinstalledonthethermostat.
Configurethethermostat’sinstallerconfigurationmenuasindicatedintheinstallationmanual,AppendixA:
‘ThermostatSettings’.

INSTALLATIONCHECKLIST
4
OUTSIDECONDENSERUNIT
EnsureproperclearancesareobservedaroundtheunitinaccordancewithAppendixDintheinstallation
manual,makingsuretoprovideappropriatespaceforaccessibilitytothecompressorcompartment’saccess
panel(30inchesminimum).
Ensurecondenserisplacedonappropriatesnowstands(notblocks,sleepers,etc.)perclimateregionwitha
minimumof12”clearancetoground.
Ensureoutdoorunitislevel.
Ensuretheoutdoorcoil’sdrainageholesarenotobstructed,providingfulldrainagerunoffduringthedefrost
cycles.
Checkfactorytubingtoensuretubesarenotrubbingagainsteachotheroranysheetmetal.Paycloseattention
todistributortubesonbothindoorandoutdoorcoils.
Ensuretransformeriswiredappropriatelyforappliedlinevoltage.Forcorrectwiring,seeLineVoltagediagram
inAppendixB.Unitisfactorywiredfor230VAC.
Ensurethe10conductor,18AWGcontrolharnesshasbeencorrectlywiredbetweenthethermostat,indoorair
handler,andoutdoorunit,followingcolorcodesandschematicsprovidedinAppendixB.
Ensuretheelectricaldisconnectisproperlysizedfortheoutdoorunit,perNECand/orlocalcodes.
Ensureallelectricalconnectionsareweathertight.
Ensureallcabinetandelectricalfastenersaresecure.Shippingvibrationcanloosenconnections.
Ensurecontrolwiringisnotchaffing/grommetisinstalled.
ChargingtheSystem
Ensurebothvaporandliquidservicevalvesareopenandback‐seated.
Ensuresystemhasbeenproperlyevacuatedtoatleast500microns.Atripleevacuationisthepreferredmethod
foracleaninstallation.
EnsuretheR‐410AINITIALCHARGEisweighedinasaliquidthroughthe3/8”servicevalveportinsidethe
compressorcompartment.FINALCHARGE(ifrequired)istobeweighedinthroughthe¼”chargingportonthe
outsideoftheunitwhilethesystemisoperating(thisportisalwaysreadingthelowpressuresideofthe
system).Thevaporservicevalveportishigh‐pressuregasduringheatingoperationandlow‐pressuregasduring
coolingoperation.
Chargingoperationsshouldalwaysbeperformedinheatingmode.Iftheunitmustbechargedincoolingmode,a
returntripmayberequiredtocheckthechargeduringheatingseason.
Totalchargeamountisdependentonthetotallengthoftheliquidline.SeetheLineSetChargingChartin
AppendixC.

INSTALLATIONCHECKLIST
5

SystemStartupandCheckout
EnsuretheaccesscovertotheairhandlerisinplacetoestablishproperairflowacrosstheindoorA‐coilwhile
thesystemisoperating.
Afterapplyingpower,ensureelectricalvoltageratingsarewithinspecifications.Ifthevoltageisoutsideof
specification,contactyourlocalutilitycompany.
Verifycontrolboardheartbeatisactive,andnoerrorconditionsarepresent.
Obtainanaccuratemeasurementoftheoutdoortemperatureattheoutdoorunit.
Measureliquidlinetemperaturebyattachingandinsulatinganaccuratethermistortypeorelectronic
thermometertothe3/8”liquidlineneartheoutdoorcoil.
PlacethesystemintoaStage2heatingcall(24VonY2terminalatoutdoorunit).Aminimumanti‐shortcycle
timerof5minuteswillelapsebeforeanycompressoroperationispermittedbythecontrolboard.
Operatetheunitforaminimumof30minutesbeforecheckingcharge.
MeasureliquidservicevalvepressurebyattachinganaccurateR410Aratedgaugetothe3/8”serviceport.
RefertoAppendixC‘ChargingChart’forrequiredsubcoolingtemperatures.
Forevery1lbofadditionalrefrigerantadded,allowasufficienttimeforthesystemtosettlebefore
takinganothersubcoolingindication.
Completetheservicestickerontheelectricalboxcoverduringinstallation.
IMPORTANT:Beforeleavingthejob,besuretodothefollowing:
Ensurethatallwiringandtubingissecureinunitbeforeaddingpanelsandcovers.Securelyfastenall
panels/coversandensureallfastenersremaintight.
Tightenservicevalvestemcapsto1/12‐turnpastfingertight.
LeaveOwner’sManualwithowner.Explainsystemoperationandperiodicmaintenancerequirements
outlinedinmanual.
Gooverowner’schecklistwiththenewAcadiaowner.
FillouttheDealerInstallationChecklistandplaceincustomerfile.
FillouttheinstallationdatasheetonthelastpageandmailorfaxittoHallowellInternational.








SAFETY
6
SAFETYCONSIDERATIONS
Improperinstallation,adjustment,alteration,service,
maintenance,orusecancauseexplosion,fire,electrical
shock,orotherconditionswhichmaycausedeath,personal
injury,orpropertydamage.

Consultaqualifiedinstaller,serviceagency,oryourdistribu‐
torformoreinformation,orassistance.Thequalifiedinstaller
oragencymustusefactory‐authorizedkitsoraccessories
whenmodifyingthisproduct.Refertotheindividualinstruc‐
tionspackagedwiththekitsoraccessorieswheninstalling.
Followallsafetycodes.Wearsafetyglasses,protectivecloth‐
ing,andworkgloves.
Usequenchingclothforbrazingoperationstoprotectsystem
components.
Havefireextinguisheravailable.Readtheseinstructionsthor‐
oughlyandfollowallwarningsorcautionsincludedinlitera‐
tureandattachedtotheunit.Consultlocalbuildingcodes
andNationalElectricalCode(NEC)forspecialrequirements.
Recognizesafetyinformation,symbolsandwords:

(DANGER) Identifies serious hazards which will
result in severe personal injury or death.

(CAUTION) Identifies unsafe practices which would
result in minor personal injury or product and
property damage.

(NOTE) is used to highlight suggestions which will
result in enhanced installation, reliability, or
operation.
INSTALLATIONRECOMMENDATIONSNOTES
1.) Positionunitawayfromwindows,patios,decks,etc.
wheretheunit’soperationalsoundmaydisturb
customer.

2.) Ensurethatvaporandliquidtubediametersare
appropriatetocapacityofunitandthatbothlinesare
wellinsulated.

3.) Runrefrigeranttubesasdirectlyaspossiblebyavoiding
unnecessaryturnsandbends,keepingtubestheshortest
lengthpossibletoreducerefrigerantchargeamountand
increaseefficiency.

4.) Whenpassingrefrigeranttubesthroughthewall,sealthe
openingwithRTVorotherpliablesilicon‐basedcaulkand
insulate.


5.) Installfilterdryerindoorsatairhandlerandinsulate.

6.) Insureunitisplacedawayfromroofendswhererain,ice,
snow,whereiciclesmayform,oranyotherdebrismay
fallontopof,anddamageunit.

7.) Besuretoaddanoiltraptothevaporlineforevery10ft
ofverticalrise.

8.) Avoiddirecttubingcontactwithwaterpipes,ductwork,
floorjoists,wallstuds,floors,walls,brick,orother
constructionmaterial.

9.) Donotsuspendrefrigeranttubingfromjoistsandstuds
witharigidwireorstrapwhichmaycomeindirect
contactwithtubing.

10.) Whennecessary,usehangerstrapswhichconformto
shapeoftubinginsulation.

11.) Isolatehangerstrapsfrominsulationbyusingmetal
sleevesbenttoconformtoshapeofinsulation.

12.) Insulateboththevaporlineandtheliquidlines
separatelysobothwillhavetheirowninsulation.The
Acadiautilizesthewasteheatonthe3/8”liquidlineat
lowertemperatures.Thatiswhywemustinsulate.

13.) Ifthelinesetisroutedontheexteriorofthehome,be
suretoaddadditionalinsulationtoboththeliquidand
vaporlinestominimizethermallossesfromthelineset.
(Note:Exteriorlinesetsmayhavehighthermallosses
thatcanreducesystemcapacityandefficiency.)

14.) Ensurethattubinginsulationispliable,sealedwithtape
orglueandcompletelysurroundstheVapor,andthe
Liquidtubesseparately.

15.) Maximumlinesetlengthis50ft;consultfactoryifother.

16.) Maximumverticalrise10ft;consultfactoryifother.

IMPORTANT:Maximumliquid‐linesizeis3/8–inO.D.forall
residentialapplications.The3/8‐inliquidlinemustbe
insulatedindependentlyfromthevaporlineinsulation.

(CAUTION) USE ONLY R410A RATED SERVICE
EQUIPMENT
Onlyinstallthefactory‐suppliedheatpump(bi‐flow)liquid
linefilterdrierontheliquidlineattheindoorunit.
Installationofthefilterdryerinsideistohelppreventheat
lossduringheatingoperation.Thefilterdriermustbe
insulated.Obtainreplacementbi‐directionalR410Arated
filterdriersfromyourlocalsupplydistributor.

INSTALLATION
7

Step1—CheckEquipmentandJobSite

Outdoorcondenserunitisheavy.Takethenecessary
precautionsanduseappropriateequipmenttomoveand
install.

UNPACKUNIT
Movetofinallocation.Removecarton,takingcarenotto
damageunit.

INSPECTEQUIPMENT
Checkovertheunitforanysignsofshippingdamage.If
shipmentisdamagedorincomplete,fileaclaimwiththe
shipmentcompanyassoonaspossible.
Checktheunitfornitrogenpressureusingapressuregauge.
Theunitshouldhaveachargeof50psi(+/‐10%)ofnitrogen.
Iftheunit’snitrogenchargeislow,orlacksnitrogenpressure,
donotinstalltheunituntilHallowellfactoryserviceis
contacted.

Step2—InstallonaSolid,LevelMountingPad
orFoundationRack

MounttheAcadiaonasolid,level,foundationpadwith
propersub‐baseanddrainagetoensuretheunitwillnotshift
duringitslifetime.

SeeAppendixD,Figure13forappropriatemounting
configurationsoftheoutdoorunit.

ELEVATEUNIT
NOTE:Accumulationofwaterandiceinbasepanmay
causeequipmentdamage.Elevateunitperlocalclimateand
coderequirementstoprovideclearanceaboveestimated
snowfalllevelandensureadequatedrainageoftheunit.
UseonlyHallowellApprovedsnowstandsinareaswhere
prolongedfreezingtemperaturesareencountered.Ensure
thatoutdoorcoildrainageholesarenotobstructedbysnow
stand.Ensurethemountingpadwillnotshiftorswellfrom
seasonalfrostheaves.
Theunitmustbeplacedonasecure,andlevelmounting
padorracktopreventmovementduetofrostorice
build‐upandtoallowforpropersystemdrainage.
Theunitmustbesetabovetheaveragesnowfalllinein
theareaofinstallation.
Duetoicingontheoutdoorcoil,unitmustbemounted
sothatrunoffofwaterduringdefrostwillnotcausea
safetyproblemwhenwaterrefreezes.Note:Donotset
unitsothatdefrostcondensatewillrunacrosssidewalk.
Ensuretheunitisnotplaceddirectlyunderroofdrains,
eaves,orunderroofpitcheswhererain,ice,orfalling
snowmayfallonanddamageunit.
UnitmustbemountedonHallowellApprovedsnow
standstoallowwatertodrain‐outduringadefrostcycle,
andsothaticebuildupwillnotinterferewithunit
operation.
Besurethatthemountingofthesnowlegsareonthe
supportrailsofthesystemandnotonthebasepansoit
willallowthewatertodrainoutoftheunitduring
defrost.

CAUTION: Donotblockdrainageholesunderoutdoor
coil.Icebuildupwilldamagecoil.

CAUTION: DonotallowPOElubricanttocomeinto
contactwithroofingmaterial.POEmaydeterioratecertain
typesofsyntheticroofing.

NOTE:Onrooftopapplications,mountonlevelplatformor
frame.Placeunitaboveaload‐bearingwallandisolateunit
andtubingsetfromstructure.Arrangesupportingmembers
toadequatelysupportunitandminimizetransmissionof
vibrationtobuilding.ConsultlocalCodesgoverningrooftop
applications.

NOTE:Unitmustbeleveltowithin±2°.

Step3—ClearanceRequirements
Wheninstalling,allowsufficientspaceforairflow,
clearance,wiring,refrigerantpiping,andservice.
Allowatleast30‐in.ofclearanceattheserviceendof
unit,and48in.aboveunitforproperairflow.
Recommendedclearanceontheremainingsidesis18in
(12inminimum).Unitisnottobeinstalledinanytypeof
enclosedstructure.
Maintainadistanceof36in.betweenunitsinmulti‐unit
applications.
Positiontheunitssothatwater,snow,oricefromroofor
eavescannotfalldirectlyonunit.


INSTALLATION
‐8‐
Coverpipingtoinsurethatsnowandicewillnotdamage
therefrigerantlines,andinsulation.

NOTE:Onrooftopapplications,locateunitatleast12in.
aboveroofsurface.

Figurea‐ClearanceRequirements
Step4—CheckIndoorExpansionDeviceand
InstallinAirHandlingUnit

Forproperunitoperation,reliability,andperformancethe
unitsmustbeinstalledwithabalanceport,bi‐directional
heatpumpTXVspecificallydesignedtooperatewithR‐410A
refrigerant.Donotinstallanairhandlerwithevaporatorcoils
havingcapillarytubeororificemeteringdevices.

AIRHANDLERINSTALLATION

NOTE:Intheeventtheairhandlerwasinstalledpriorto
therestofthesystem,itisrecommendedthatallair
handlersettingsandwiringbedoublecheckedatthispoint.

Airhandlersusedwithmulti‐stageunitsmustbecapableof
operatingwithaminimumof2blowerspeeds.Onvariable
speedunits,ensurejumpersareplacedforrecommendedair
flowrequirements.Allairhandlingunitsmustbeinstalledas
specifiedbythemanufacturer’sinstallationinstructions.
However,thefollowingrecommendationsshouldbe
consideredtominimizenoiseandserviceproblems:
Taketheproperprecautionswhenmountingtheair
handlerfornoiseandvibrationdampening.Useduct
isolatorsonboththesupplyandreturnductsconnecting
totheairhandler.

Ensureallfittingsandbrazejointsareleaktestedbefore
startingthesystem.

Donotrunthesystem/airhandlerfanwhile
constructionisinprogress.
Allductworkmustbeproperlysizedforproperairflow.
Undersizedductswillreducethesystem’sperformance,
resultinginunitdamage,areducedlifeandhigher
operationalcosts.

Ensurethatallairregistersareinthefullyopenposition.
Insulateandsealallductwork.
Ensureductworkdoesnotcomeincontactwith
structuralbuildingmembers.
Utilizeflexconnectionsatthemainductworksupplyand
returntoisolatepotentialvibrationsandnoise.
BesurethefiltercoverisinstalledontheHallowell
matchedairhandler,ensuringeasyaccesstothefilterfor
routinemaintenanceoffilterchange.Anygaps,holes
andjointsshouldbeproperlysealedtopreventair
leakage.
Besurethecondensatedrainorthelinesetdonotblock
accesstothefilterdoor,oranyoftheaccesspanelsof
theairhandler.

IMPORTANT:DuetothehighoutputcapacityoftheAcadia
duringcertainoutdoorambientconditions,aductbypass
maynotbeused.ConsultHallowelltechnicalsupportfor
additionalsupport.

IMPORTANT:Anairfiltermustbeinstalledupstreamofthe
returnsideoftheairhandlersuchthefilteriseasytoaccess
forroutinefilterchanges.

NOTE:Improperinstallationofequipmentmayresultin
undesirablenoiselevelsinlivingarea.


INSTALLATION
‐9‐
TheHallowellMatchedairhandlerscomefromthefactory
withbi‐flowTXVsspecificallydesignedforR‐410A.
Installationisrequired.

IMPORTANT:Ifreplacinganexistinghotairfurnacemake
suretheductworkissizedappropriatelyfortheairflow
neededbytheAcadia,sealedandinsulated.

IMPORTANT:Whenmatchingtheoutdoorunitwiththe
Hallowellfactoryairhandler,anR‐410AratedTXVmustbe
installed.NOOTHERTYPEOFMETERINGDEVICEMAYBE
USED!Contactthefactoryforanyquestionsaboutsizingor
applications.

IMPORTANT:TheTXVshouldbemountedasclosetothe
indoorcoilaspossiblewiththethermalbulbsecurely
mountedandinsulated.

NOTE:WhenyouareusingtheHallowellapprovedair
handlerand/orTXVkitseeAppendixA‐HallowellTXVkit
installationinstructions.

Step5—MakePipingConnections

DANGER:Relievepressureand/orrecoverallrefrigerant
beforesystemrepairorfinalunitdisposaltoavoidpersonal
injuryordeath.
CAUTION: Anoiltrapmustbeinstalledatthebottomof
anyriser.Iftheriserisover10feetcallthefactoryfor
support.
NOTE:Outdoorunitmustbeconnectedtoafactory‐
approvedindoorairhandler.

NOTE:Outdoorunitischargedwithnitrogen.Ifnonitrogen
isrelievedfromoutdoorunit,contactthefactorybefore
goingfurther.Additionalstepsmayberequiredifsystem
haslostfactorynitrogencharge.

Thewholesystem,wheninstalled,mustbeevacuatedto500
micronstoeliminatecontaminationandmoistureinthe
system.

Theseoutdoorunitsarecarefullyevaluatedandlistedwith
specificindoorcoilsandfansforpropersystem
performance,efficiencyandreliability.

REFRIGERANTTUBING&FILTERDRIER

CAUTION: ThefilterdryermustbeaBi‐Flow,Heatpump
R410Atypefilterdryer.

NOTE:Thefilterdryermustbeinstalledattheairhandler
andinsulatedtopreventheatloss.TheAcadiauseswaste
heatofftheliquidline.

Thefilterdryermustbeinstalledintheliquidlineascloseto
theHallowellMatchedairhandingunitaspossible.DONOT
installaliquidlinesightglass.

IMPORTANT:Insulatethefilterdryerwith½inchthick
insulationafterinstallationtohelpretainheatintheliquid
line.
PRECAUTIONSDURINGLINESETINSTALLATION

CAUTION: BesureNitrogenisflowingthroughthesystem
priortoanybrazingforthepreventionofoxidationand
contaminationofthesystem.

CAUTION:SystemusesPOEoilforthecompressor
lubricant.Preventativemeasuresshouldbetakento
minimize/eliminatethepossibilityofatmosphericpressure
enteringthesystem.Useanitrogenpurgetoprevent
ambientairfromenteringthesystemduringpiping
connections.Taketheproperprecautionduringpiping
installation.

NOTE:Boththevaporlineandtheliquidlinemustbe
insulatedseparately.

IMPORTANT:Keeplinesfreeofdebrisandmoisture
EnsurealllinesettubingmeetsR410Arefrigerant
requirements
Installthelineswithasfewbendsaspossible,reducing
90°bendswherepossible.Caremustbetakennotto
damagethecouplings,orkinkthetubing.UseACR,hard
drawncoppertubingwherenoappreciableamountof
bendingaroundobstructionisnecessary.Ifsoftcopper
mustbeused,caremustbetakentoavoidsharpbends
whichmaycausearestriction.
Thelinesshouldbeinstalledsothattheywillnot
obstructserviceaccesstothecoil,airhandlingsystem,or
airfilter.
Caremustalsobetakentoisolatetherefrigerantlinesto
minimizenoisetransmissionandvibrationfromthe
equipmenttothestructure.
Thevaporlinemustbeinsulatedwithaminimumof½”
foamrubberinsulation.Theliquidlinemustalsobe

INSTALLATION
‐10‐
insulatedwithaminimumof½”foamrubberinsulation
separatelyfromthevaporline.
UsePVCorothersuitablepipingasaconduitforall
undergroundinstallations.
Packfiberglassinsulationandasealingmaterialsuchas
permagum,orRTVaroundrefrigerantlineswherethey
penetrateawalltoreducevibrationandtoretain
flexibility.
Useonlylongradius90°foranyharddrawncopper.
SWEATCONNECTION
CAUTION: Purgelinesetswithnitrogenbeforeandwhile
brazingoccurstopreventinternaloxidizingcontaminants
fromenteringthesystemandtoprotectthePOEoil.
1. Runtheline‐setfromtheAirHandlerUnit(AHU)tothe
outdoorunit.Besuretokeeptheendsofthepipe
sealedsonoforeigndebrisormoisturecangetintothe
pipe.

2. Beforebrazing,anitrogenpurgemustbesetuptorun
thenitrogenthroughthe7/8”or3/4”servicevalve.Be
suretoremovetheSchradervalvecorefromboththe
vaporandliquidservicevalves.Setthenitrogenpurgeto
nomorethe2psistanding.

3. Brazingonejointatatime,workyourwayaroundthe
line‐setstartingwiththevaporlineconnectionatthe
outdoorunit.Besuretowraptheservicevalveswith
wetcloths.Thiswillprotecttheservicevalvefrom
overheating.

4. Useindustrystandardbrazingpractices.Useofabrazing
shieldmayberequiredtokeepfromburningtheside
panelofthesystem.

5. AttheAHU,brazethevaporlinetothevaporconnection
ontheAHU.

6. Atthe3/8”liquidlineconnectionontheAHU,inserta
shortpieceof3/8”pipeandbrazeattheAHU.

7. InstalltheLiquidlinefilterdryeronthe3/8”linecoming
outoftheAHUandbrazeinplace.

8. Insertthe3/8”linefromtheline‐setintotheotherend
ofthefilterdryerandbrazeinplace.

9. Thelastbrazejointisattheoutdoorunit’s3/8”
connection.Todothelastbrazejointremovethe
Schradervalvecorefromthe3/8”servicevalve.

10. Wraptheservicevalvewithawetrag,preventingthe
servicevalvefromoverheating.Insertthepipeand
brazeintoplace.Theuseofabrazingshieldmayneedto
beusedtokeepfromburningtheunit.

11. Re‐installtheSchradervalvecoresintothevaporand
liquidservicevalves.

12. Leaktestthelinesetbyadding400psiofnitrogentothe
line‐setandAHUcoil.

13. Thesystemisnowreadyforevacuation.
Openallserviceportsandallflow‐controldevicesoncethe
systemispiped.Donotleavesystemopentoatmosphere.
ThePOEoilinthecompressorsisextremelysusceptibleto
moistureabsorption.Alwayskeeptheendsofthetubing
sealedduringinstallationandfreeofdebris.
LEAKTESTING
Leaktestalljointsontheindoor/outdoorunits,and
refrigeranttubing.Openbothservicevalvesbyturningcenter
stemfullyCCWuntilstemreachesthetopofthevalve.
NOTE:Ensurebothservicevalvesareopenedandnitrogen
purgeisremovedbeforeevacuation.
NOTE:Outdoorunitischargedwithnitrogenthatmustbe
releasedbeforeevacuation.
NOTE:Boththevaporandliquidlinesmustbecompletely
insulatedusingminimum½”wallinsulationseparatelyafter
leaktesting.

EVACUATEREFRIGERANTTUBING,INDOORCOIL,AND
OUTDOORUNIT

Evacuationrequiresavacuumpumpcapableofachievinga
minimumvacuumof500micronsandamicrongaugefor
indication.(Note:Besuremicrongauge,hoses,and
manifoldsetareingoodworkingconditionandleakfree.)
Thevacuummethodisthemosteffectivewayofassuringa
systemisfreeofleaks,airandmoisture.

INSTALLATION
‐11‐
Refrigerantsystemmustbeevacuateddowntoaminimumof
500microns.Once500micronshasbeenreached,the
systemshouldbesealedoffandheldat500micronsfora
minimumof15minutestoperformafreeairtest.
IMPORTANT:Breakanysystemunderavacuumwith
nitrogenpressureforrepairs,preventingambientairfrom
enteringthesystem.
FINALTUBINGCHECK

IMPORTANT:Ensurebothindoorandoutdoorunitshavenot
shiftedduringshipment.Ensuretubesarenotrubbingagainst
eachotheroranysheetmetal.Paycloseattentionto
distributortubesandserviceportstems.Checkinsulationon
vaporandliquidlines,andmakesureitissealedproperly
withtapeorglue.
Step6–MakeElectricalConnections

DANGER:Toavoidpersonalinjuryordeath,donot
supplypowertounitwithcompressorterminalboxcover
removed.
CAUTION:Besurefieldwiringcomplieswithlocaland
nationalfire,safety,andelectricalcodes,andvoltageto
systemiswithinlimitsshownonunitratingplate.Contact
localpowercompanyforcorrectionofimpropervoltage.
Seeunitratingplateforrecommendedcircuitprotection
device.
Useaminimumof18AWG,10conductorwireharnessfor
controlconnectionsbetweenthethermostat,airhandler,
andoutdoorunit.Aminimum10conductor18AWGwire
harnessmustbeusedtopreventincorrectwiringofthe
unit.
IMPORTANT:Keepwiringcolorcodedaccordingtosystem
drawingsforeasytroubleshootingandstandardization.For
colorcodereference,seeFigures6‐10inAppendixB.
NOTE:Operationoftheunitonimproperlinevoltage
constitutesabuseandcouldaffectunitreliability.Seethe
unitratingplate.Donotinstallunitinsystemwherevoltage
mayfluctuateoutsideofnormalvoltagefluctuationsof198
–253VACinaccordancewiththespecificationsheets
(AppendixG).
NOTE:Usecopperconductorsonlybetweenthedisconnect
switchandtheunit.
NOTE:Installabranchcircuitdisconnectofadequatesize
perNECtohandleunitstartingcurrent.Locatedisconnect
withinsightfromandreadilyaccessiblefromunit,per
Section440ofNEC.
ROUTEGROUNDANDPOWERWIRES

DANGER:Theunitcabinetmusthaveanuninterruptedor
unbrokengroundtominimizepersonalinjuryifanelectrical
faultshouldoccur.Thegroundmayconsistofelectricalwire
ormetalconduitwheninstalledinaccordancewithexisting
electricalcodes.Failuretofollowthiswarningcanresultin
anelectricshock,fire,ordeath.
Removeaccesspanelandelectricalboxcovertogainaccess
tounitwiring.Extendwiresfromdisconnectthroughpower
wiringholeprovidedandintounitcontrolbox.Sizewiresper
NEC.
CONNECTGROUNDANDPOWERWIRES

CAUTION:LineVoltageandControlwiresmustberouted
clearofanysystemcomponentstopreventwiringchafing/
electricalshorts.

CAUTION:Ensurelineandcontrolvoltagewiresare
routedawayfromterminalconnectionsofrelaysand
capacitors.

Connectthegroundwiretothegroundconnectionluginthe
controlboxforsafety.ConnectpowerwiringtoindicatedL1
andL2connectionsusingappropriatelysizedwirenuts.For
clarificationseethelinevoltagedrawinginFigure6,Appendix
B.The75VAtransformerlocatedintheoutdoorunitisfactory
pre‐wiredfora240VACinput.Iftheunitisbeingconnected
tosupplyvoltagesotherthan240VAC,consultthewiring
diagraminFigure6,AppendixB.
ROUTECONTROLWIRING

Toroutecontrolwirestotheinterioroftheheatpumpunit,it
isnecessarytopiercethe½”rubbergrommetandslidethe
controlwiresintotheelectricalcabinetoftheoutdoorunit.
Whileroutingcontrolwiresthroughtheunit,avoidrouting
acrossoraroundthecontrolboard,asthismaygenerate
unwantedinterference.
CAUTION:Testgroundconnectionusingamulti‐meter.
CONNECTCONTROLWIRING

NOTE:Thesystemissuppliedwitha75VAtransformer
withabuilt‐in3.7ampbreaker.

INSTALLATION
‐12‐
NOTE:Ifusingexistingcontrolwiring,besuretheharnessis
aminimumof18awg,10conductorminimumandallthe
wiringisingoodcondition.
IMPORTANT:Ensurethatnoothercontrolvoltage
transformerisconnectedtothesystem.Useonlythe75VA
transformersuppliedintheoutdoorunit.
IMPORTANT:Makesuretoadjustthelinevoltageleadsto
the75VAtransformerifthelinevoltageisotherthan240V.
IMPORTANT:Disconnectthesecondaryleads(controlvoltage
wires)fromtheairhandlercontroltransformertotheair
handlercontrolboard.
Using10or12‐conductor,18AWG,color‐coded,insulated
(35Cminimum)wire,connectthecontrolsystemcomponents
betweentheheatpump,HallowellMatchedairhandler,and
thermostat(asshowninFigure9,AppendixB).Ifthedistance
betweenthethermostatandtheheatpumpunitismorethan
100feet(asmeasuredbythecontrolwiring)16AWGwire
shouldbeutilizedtoavoidunnecessaryvoltagedrop.All
wiringmustbeNECClass1andmustbeseparatedfromthe
incomingpowerleads.Theoutdoorunitprovidesamaximum
of75VA,24VACforcontrolpower.Toensurecorrect
operationofthesystem,the40VAtransformerlocatedinthe
IndoorAirHandlermustbedisconnectedfromthecontrol
board,andproperlyinsulatedtopreventpossibleshorts.
NOTE:24VACneedstobesuppliedtotheairhandler
controlboard;24VACterminalandCOMterminal.
FollowingthecolorcodesprovidedinFig7‐10,AppendixB,
makeconnectionstothethermostat,airhandler,andout‐
doorunit.Connectionsmaybemadeusingeither¼”female
disconnects,orusingstrippedwireconnectionswiththe
screwterminalsprovided.
NOTE:Ensurethesuppliedthermostatandindoorair
handlerareinstalledandproperlywired.
NOTE:Ensuretheairhandlerjumpersareplacedintheir
appropriatepositionandthatallwiringfollowscolorcode
instructions.
CONFIGURINGYOURHEATPUMPCOMPONENTS

Minimumairflowforthe48Ais1300cfmonaY2call.
Setthecontroljumpersintheairhandleraccordingly.If
usingthefactorysuppliedairhandlingunit,seeFigures
1‐2,AppendixA.JumpersettingsofHeat:ADelay:A
Cool:DAdjust:B.
Minimumairflowforthe36Ais1000cfmonaY2call.
Setthecontroljumpersintheairhandleraccordingly.If
usingfactorysuppliedairhandlingunitseeFigures1‐2,
AppendixA.JumpersettingsofHeat:ADelay:ACool:B
Adjust:B.
Minimumairflowforthe24Ais800cfmonaY2call.Set
thecontroljumpersintheairhandleraccordingly.If
usingfactorysuppliedairhandlingunitseeFigures1‐2,
AppendixA.JumpersettingsofHeat:ADelay:ACool:B
Adjust:B.
IfelectricheatisinstalledintheAHU,besuretheair
handlerunitisproperlyconfiguredforelectricheat.Be
suretheHeat/NoHeatjumperontheAHUunitissetto
Heat.Ifusingthefactorysuppliedairhandlingunit,see
Figure1,AppendixA.
UsingthetableinFigure5,AppendixA,programthe
thermostatforproperoperationwiththeHallowell
Acadia.
ItisessentialtoplacethejumperbetweenRCandRHas
indicatedonthethermostatdiagram(Figure9,Appendix
B)toallowcorrectoperation.
Ensurethejumpersontheoutdoorcontrolboardarein
theproperposition;JMP2ManualDefrostononepin,
andJMP1Economyjumperonbothpins.
Ifthesystemisusingthefactoryrecommendedzone
control,consultFigure15,AppendixFforproperwiring
usingtheEWCzonecontrol.
FINALWIRINGCHECK
IMPORTANT:Checkthefactorywiringandwireconnections
toensureterminationsaresecuredproperly.Checkthewire
routingtoensurethewiresarenotincontactwithtubing,
sheetmetal,electricalboxcomponents,etc.

Step7–ChargeUnitandStartup
CAUTION:ENSUREBOTHTHEVAPORLINEANDLIQUID
LINESERVICEVALVEAREOPENANDTHELINESETIS
PROPERLYINSULATED.
NOTE:Theminimumoutdooroperatingambientincooling
modeis50°F,andthemaximumoutdoorambientincooling
modeis125°F.Theminimumallowedheatingoperationis‐
30°Fandthemaximumoutdoorambientis82°F.
Topreventcompressordamageorpersonalinjury,observe
thefollowing:
Donotoverchargethesystemwithrefrigerant.Follow
thechargingchartandweighinR410arefrigerant.

INSTALLATION
‐13‐
Donotoperatetheunitinavacuumoratnegative
pressure.
Donotdisablethelow‐pressureorhigh‐pressure
switches.
EnsuretheAirHandlerfilterisclean
EnsuretheAirHandlerAdjustmentsaresetcorrectly.
Checkthatallsupplyandreturnregistersareclearand
notblocked.
Topreventpersonalinjuries,wearsafetyglasses,protective
clothing,andgloveswhenhandlingrefrigerantandobserve
thefollowing:
USEONLYR410ARATEDREFRIGERANTEQUIPMENT.
IMPORTANT:KEEPEQUIPMENTANDHOSESCLEAROF
DEBRISANDMOISTURE.
IMPORTANT:Donotventrefrigeranttotheatmosphere.
Recoverrefrigerantduringsystemrepairorfinalunit
disposal.
CAUTION:Ifthereiseveraquestionofhowmuchcharge
hasbeeninducedintothesystemwhilecharging,recover
theunitandre‐charge.Recordtheamountoffinalcharge
withapermanentmarkerontheservicestickerwhereitwill
bevisible.
Followthesestepstoproperlystartupthesystem:
1. Closetheelectricaldisconnectstoenergizethesystem
andensurethesystemcontrolheartbeatandthermostat
energizes.
NOTE:Intheeventoutdoortemperatureswillnot
allowthefullamountofchargeintotheliquidline
serviceport,completethechargethroughthe¼
inchchargingportaftersystemisrunning.
NOTE:Theoutdoorunitisequippedwithcrank
caseheaterswhichoperatewhenlowsump
temperaturesoccur,ensuringseparationofoiland
refrigerant.Ensurethecrankcaseheatersare
energizedbeforeadmittinginitialcharge.Ifpower
hasbeenlost,orunithasbeende‐energizedfor4
hoursormoreafterchargehasbeenadmitted,
allowthecrankcaseheaterstoenergizefora
minimumof12hours.Notfollowingwarningsmay
resultincompressorchatteringandpermanent
damagetocompressors.
2. Theinitialunitchargedependsonthelengthoftheliquid
lineused.Besuretoaccuratelymeasuretheliquidline
length.Afterevacuationiscomplete,chargetheunit
withR410Arefrigerantthroughtheliquidlineservice
port,usingtheamountsonthechartshownbelow.
HallowellACHPLineSetChargingChart
Lineset
length
(ft)
Acadia024Acadia036&
Acadia048
0‐109lb 12lb‐8.0oz
119lb‐0.6oz12lb‐8.6oz
129lb‐1.2oz12lb‐9.2oz
139lb‐1.8oz12lb‐9.8oz
149lb‐2.4oz12lb‐10.4oz
159lb‐3.0oz12lb‐11.0oz
169lb‐3.6oz12lb‐11.6oz
179lb‐4.2oz12lb‐12.2oz
189lb‐4.8oz12lb‐12.8oz
199lb‐5.4oz12lb‐13.4oz
209lb‐6.0oz12lb‐14.0oz
219lb‐6.6oz12lb‐14.6oz
229lb‐7.2oz12lb‐15.2oz
239lb‐7.8oz12lb‐15.8oz
249lb‐8.4oz13lb‐0.4oz
259lb‐9.0oz13lb‐1.0oz
269lb‐9.6oz13lb‐1.6oz
279lb‐10.2oz13lb‐2.2oz
289lb‐10.8oz13lb‐2.8oz
299lb‐11.4oz13lb‐3.4oz
309lb‐12.0oz13lb‐4.0oz
319lb‐12.6oz13lb‐4.6oz
329lb‐13.2oz13lb‐5.2oz
339lb‐13.8oz13lb‐5.8oz
349lb‐14.4oz13lb‐6.4oz
359lb‐15.0oz13lb‐7.0oz
369lb‐15.6oz13lb‐7.6oz
3710lb‐0.2oz13lb‐8.2oz
3810lb‐0.8oz13lb‐8.8oz
3910lb‐1.4oz13lb‐9.4oz
4010lb‐2.0oz13lb‐10.0oz
4110lb‐2.6oz13lb‐10.6oz
4210lb‐3.2oz13lb‐11.2oz
4310lb‐3.8oz13lb‐11.8oz
4410lb‐4.4oz13lb‐12.4oz
4510lb‐5.0oz13lb‐13.0oz
4610lb‐5.6oz13lb‐13.6oz
4710lb‐6.2oz13lb‐14.2oz
4810lb‐6.8oz13lb‐14.8oz
4910lb‐7.4oz13lb‐15.4oz
5010lb‐8.0oz14lbs


INSTALLATION
‐14‐
3. Thethermostatmustbesetupatthistimetoproperly
workwithyourHallowellAcadia.SeethetablesinFigure
5,AppendixA.
4. SetthethermostattoFanON,ensuringairflowand
jumpersareproperlyplacedintheHallowellMatchedair
handler.Testtheemergencyheatsettings.
5. SettheFantoAUTOorONasdesired,thensettheroom
thermostattoCOOLorHEAT.Waitfortheappropriate
timedelay(s).Operatetheunitfor30minutesafterinitial
charge,continuouslyensuringthethermostatsettingwill
notbesatisfied.(Openwindowsordoorsifnecessary)
NOTE:Whilewaiting,besurethelinesetissecure
andinsulatedseparately.Thisisagoodtimeto
doublechecktheinstallationprocedure.Check
overthesystemforanyunusualvibrations/noises.
6. Settheroomthermostat10degreesormoreaboveor
belowdesiredroomtemperatureallowingsecondstage
operationwhilecharging.Thismaybringonathird
stagecallfromthethermostatandturnonauxiliaryheat.
NOTE:Donotallowthetemperaturesettingsto
bereacheduntilchargeiscomplete.Openthe
doorsandwindowsifnecessarywhilechargingto
ensurethiscondition.Besurethesetpointisabove
orbelowindoorambientandissethighorlow
enoughtoenergizedesired2ndstageoperation.
7. Ensuretheproperstageisoperatingbyreviewingthe
systemthermostatrequirementsforasecondstagecall,
andtheindicatorlightsprovidedontheoutdoorunit
controlboard.SeeFigure4,AppendixAforthelocation
oftheLEDindicatorlightsandtheircorrespondingmode.
EnsurethesystemdiagnosticoutputLEDisenergizedand
beating.SeeFigure4,AppendixA.

Step8–CheckCharge

UNITCHARGE

Withtheunitoperating,chargethesystem(ifnecessary)with
liquidR410AusingacommercialtypeR410Aratedmetering
devicemanifoldandhoseassembly.Chargethesystemwith
refrigerantintothe¼”chargingport.Checkthechargein
heatingmodeonly.Adjustthechargeinheatingusingthe
followingprocedure.
NOTE:Theunitistobechargedinhighcapacityonly(2nd
stagethermostatcall).
NOTE:Above60°F,chargetheunitusingthelinesetchart
(seestep7orAppendixC).Youmayhavetoreturnin
heatingseasonanddoublecheckchargeamountforoptimal
efficiency.
HEATINGCHECKCHARGEPROCEDURE

CAUTION:R410AismisciblewithPOEoilinthe
system.Letthesystemruninnormaloperationforan
adequateamountoftimeafterstartuporadefrost
cycletoensureanaccuratesubcoolingreading.

1. Operatetheunitaminimumof30minutesbefore
checkingcharge.
2. Measuretheliquidservicevalvepressurebyattachingan
accurateR410Aratedgaugeto3/8”serviceport.
3. Measuretheliquidlinetemperaturebyattachingand
insulatinganaccuratethermistortypeorelectronic
thermometertotheliquidlineneartheoutdoorcoil.
Usethepressure–temperaturecharttocalculatesub‐
cooling(Figure12,AppendixC).
4. Refertothechargingtableforrequiredsubcooling
temperatures(Figure11,AppendixC).Ifsubcoolingis
otherthatwhatisindicatedonthechart,consult
Hallowelltechnicalsupport.
NOTE:Forevery1lbofadditionalrefrigerantadded,allow
anadequatetimeforthesystemtosettlebeforetaking
anothersubcoolingreading.
Youmustensurethatyouwillhavea2ndstagecallonthe
thermostat.Setthethermostatwellaboveindoorairtemp
andopendoorsandwindowsifneeded.

Tocheckthesystemchargeincoolingoperation:

1. Thesystemischargedforheatingperformance.Ifthe
chargeofrefrigerantisinquestion,recovertheunit
chargeandweighintheappropriatecharge,accordingto
thelinesetchargingchart.

2. Ifthesystemisinstalledasanewinstallationduring
coolingseason,areturntriptorecheckthecharge
amountduringheatingseasonmaybeneeded.

Step9–FinalChecks

IMPORTANT:Beforeleavingthejobsite,besuretodothe
following:

INSTALLATION
‐15‐
1. Ensurethatallwiringandtubingissecureintheunit
beforeaddingpanelsandcovers.Securelyfastenall
panels/coversandensureallfastenersremaintight.
2. Tightentheservicevalvestemcapsto1/12‐turnpast
fingertight.
3. LeavetheOwner’sManualaswellastheInstallation
Manualwiththecustomer.Explainthesystemoperation
andperiodicmaintenancerequirementsoutlinedinthe
manual.
4. FillouttheDealerInstallationChecklistandplaceina
customerfile.
5. Besuretotalktothecustomeraboutthegeneral
maintenance,shovelingaroundtheunitandkeepingit
clearofdebris,basicthermostatuseandtheimportance
ofperiodicalfilterchanges.
6. Discouragethecustomerfromsetbacksofthe
thermostatprogram.
7. Ensurethesupplyregistersarediffusedproperly.
8. Ensurethechargeamountiswrittenontheservice
stickerprovidedontheelectricalboxcoverofthe
outdoorunit.
9. Talktothecustomeraboutthedefrostoperationand
howitwilleffecttheregistertemperature.
10. Besurethecustomerknowswheretopurchasemoreair
filters.
11. Ensurethesupplyregistersaredefusedawayfromheavy
trafficareasandnotdirectlyonthecustomer.
CAREANDMAINTENANCE
Forcontinuinghighperformance,andtominimizepossible
equipmentfailure,periodicmaintenancemustbeperformed
onthisequipment.Frequencyofmaintenancemayvaryde‐
pendingupongeographicareas,suchascoastalapplications.
Paycloseattentiontocleanlinessofindoor/outdoorcoils
andproperductcirculationandsealing.

Incoastalregions,theoutdoorcoilmustbewashedannually
byaqualifiedservicetechnician.

Yourservicingdealermayofferaneconomicalservice
contractthatcoversseasonalinspections.Askforfurther
details.



Extras

ZoneControls.
TheonlyzonecontrolthatisfactoryauthorizedistheEWC
UZCseriesofzonecontrol.Thezonecontrolwillbewired
andsetupaccordingtothedrawinginAppendixF.Thiszone
controlworksverywellwiththeAcadiaaslongassomerules

INSTALLATION
‐16‐
6. Toprotectthecoilfromdamage,useanti‐freezein
thehydroniclooptopreventfreezing.Afreeze‐stat
canalsobeusedtoprotectthecoil.
7. HydroniccoilsaddedinternallytotheHallowellAHU
arenotapproved.

Installingthesystemwithahotairfurnace

Hallowellwillapproveaparallelfurnaceinstallationpending
afactoryconsultation.Theductworkmustbeinstalledwith
damperssothattheairflowwillnotshortcyclethrough
eithersystemwhenitison.Anisolationrelaymustbeused
sothatthefurnaceisnotallowedtooperatewhentheAcadia
isrunning.

HallowellControlTimers

1. TemperatureStabilityTimer(5Min)–Inorderforthe
systemtochangeoperationalBINSfromonetoanother,
thesystemmustsenseatemperaturechangeinthenew
BINforatleastfiveminutes.

2. DefrostLockoutTimer(45Min)–Thistimerpreventsthe
systemfromgoingintoanotherdefrostwithin45
minutesofthepriordefrost.

3. Y2ValidationTimer(1Min)–Theoutdoorunitmust
senseaY2callfromthethermostatforatleast1minute
beforeitwillchangestages.Thiswillprohibitnuisance
stagingoftheoutdoorunit.

4. Anti‐ShortCycleTimer(3min)–Preventstheshort
cyclingofcompressoroperation.

5. MaximumDefrostTimer(8Min)–Maximumallowable
timeforadefrostcycle.

6. MinimumDefrostTimer(3Min)–Minimumallowable
timeforadefrostcycle.

7. FaultRestartTimer(10Min)–Iftheunitsensesafault,it
willstandbyfor10minutesbeforeattemptingtorestart.
(NOTE:anyfaultreoccurringthreetimeswithin30
minutewilllockoutthesystemand“CallForService”will
beindicatedonthethermostat.)

8. FanPurgeTimer(20seconds)–Runsthefanfor20
secondsattheendofadefrostcycletoremovewater
dropletsfromtheoutdoorcoil.(Reversingvalvewill
cycleattheendofthefanpurgeandendsdefrost)

NOTE:Inadditiontotheabovetimers,Hallowell’sAcadia
utilizesmanyproprietarytimerstoensureproperand
efficientoperationoftheunit.Ifthereareanyquestions
abouthowtheunitisoperating,contactHallowellfactory
support.

Troubleshooting
‐17‐
CONTROLERRORCODES

Intheeventofafailureintheoutdoorunit,thecontrolhasa
builtindiagnosticLEDfortroubleshootingpurposes.
AppendixA,Figure4showsthelocationofthediagnostic
LEDontheAcadiacontrolboard.Duringnormaloperation
thisLEDfadeson,andblinksoffcontinuously.Ifforanyrea‐
sontheunithasencounteredanerrorcondition,theerror
maybediagnosedusingtheerrortablebelow.

StatusIndicatorSequenceSystemStatus
FadeIn,FastOff(Heartbeat)NormalOperation
1Flash,OFFfor3SecondsControlBoardWatchdog
Reset
2Flashes,OFFfor3SecondsPowerBrownoutReset
3Flashes,OFFfor3SecondsSystemPressureSafety
Shutdown
6Flashes,OFFfor3SecondsInterstageOver
temperatureShutdown
7Flashes,OFFfor3SecondsOutdoorAirTemperature
SensorFault
8Flashes,OFFfor3SecondsCoilTemperatureSensor
Fault
9Flashes,OFFfor3SecondsInterstageTemperature
SensorFault
10Flashes,OFFfor3
Seconds
SpareTemperatureSensor
Fault

IftheHallowellAcadiahasencounteredanoperationalerror,
theoutdoorunitwillshutdownforaperiodof10minutes,
afterwhichitwillattempttorestartinitslastknownoperat‐
ingmode.Iftheunitisabletorestartandrunfor30continu‐
ousminuteswithoutanerror,allerrorcodeswillbecleared
andnormaloperationshallcontinue.If,however,this
attempttorestartfails,theoutdoorunitwillshutdownfor
another10minutes.Ifathirderroroccurswithin30minutes
oftheoriginalerror,theunitwillshutdownalloperationand
activateaMAINTENANCEREQUIREDoutput.Thisshould
causeaCALLFORSERVICEindicatortobedisplayedonthe
thermostat,signifyingtheneedtocontactaqualifiedinstaller
ortechnician.

BrownoutFault
InthecaseofaBrownout,useamulti‐metertocheckline
voltagetobesurethatthevoltageiswithinnameplate
tolerance.Ifsoresetthepowertotheoutdoorunitand
checkfornormaloperation.Ifvoltageislow,contactthe
PowerCompanyandletthemknowoftheproblem.

PressureSafety
Pressuresafetiesaresetasfollows:

HighPressure CutOut575psiCutIn450psi  
LowPressureCutOut5psi CutIn20psi

InthecaseofaPressureSafetyfault,checkthesystem
pressures.Thepressuresafetyswitchesareanautomatic
resettypesoyoumayhavetorunthesystemtocheckthe
pressures.Ifpressureislowchecksystemforleaks,and
repair.Inverycoldclimatesthelowpressurewilldrop
systemoutatacoiltemperatureof‐45degF.
Alsoiftheunithasnotgoneintodefrostandthecoilis
coveredinice,thiscouldcausethecoiltemperaturetodrop
below‐45degF.Installthemanualdefrostjumperonthe
outdoorunitcontrolboard.Ifunitdefrostcheckthe
TemperatureSensorFaultsectionoftroubleshootingguide.If
theunitdoesnotgointodefrostchecktheDefrost
Troubleshootingguide.

Theoutdoorunitmaybeoutonahighpressuresafetyreset.
Youwillhavetoruntheunitandwatchtheheadpressure.If
unitisinheatingmodechecktheindoorfan,andthefilter.If
theunitisincoolingchecktheoutdoorcoilandoutdoorfan
motor.

TemperatureSensorFault
NOTE:Makesurethesystempowerisoffbefore
troubleshootingthetemperaturesensors.

Ontheupperrighthandcorneroftheoutdoorunitcontrol
boardistheplugforthetemperatureRTDsensors.Youwill
needtounplugthesensorsfromthecontrolboardbypulling
theplugstraightoffthecontrolboard.Checktheconnection
ofthewiresintheplugmakingsurethatthewireisnot
brokenortheinsulationisintheplug.Youwillneeda
thermocouplereaderandsensor,andamulti‐meter.Using
thethermocoupletakethetemperatureateachsensor.
TheBluewiresensoristhecoilsensorandislocatedonthe
seconddistributortubefromthebottomofthecoil.The
Yellowwiresensoristheinterstagesensoranditislocated
onthesuctionlinegoingtotheprimarycompressor.The
Whitewiresensoristheoutdoorairsensorandislocatedon
thepipeconnectionsideoftheunit.
Usingamulti‐meter,ohmouteachsensorandcheckthe
resistanceofeachcomparedtothetemperatureonthechart
below.









Troubleshooting
‐18‐
ResistanceVsTemperature
Temperature(°F)Resistance(Ω)
‐4084.21
‐3086.41
‐2088.61
‐1090.81
093.01
1095.2
2097.38
3099.57
40101.74
50103.9
60106.06
70108.22
80110.38
90112.53
100114.68
110116.82
120118.97
130121.1

Tolerances
Temperature±Tolerance
°F°FΩ
‐1001.10.3
00.70.2
320.60.1
1000.70.2

Ifanyofthesensorsdonotohmoutcallyourdistributorfora
newsensorandreplaceit.

HardwareFault
IncaseofaHardwareFaultcontactHallowellInternational
LLC.Thisisahardwareproblemonthecontrolboardandit
willneedtobereplaced.

UnitIsnotChangingModesofOperation
Theoutdoorunitlooksatthecallfromtheindoorthermostat
andtheoutdoortemperaturetodeterminetheoptimized
runningmode.Checkforinputcallsfromthethermostat.If
ok,checktoseewhatmodeofoperationyoushouldbein.
Seethechartbelow.Iftheunitisnotchangingmode,dothe
Temperaturesensorfaulttest.

HeatingModeOperation
TheHallowellAcadiaoperateswith6modesofheating
capacityavailable.Thesemodesareasfollows:

Mode1:Singlecylinderprimarycompressor

Mode2:Twocylinderprimarycompressor

Mode3:PrimaryTwocylinderplusW1(1ststageauxiliary
heat)

Mode4:PrimaryTwocylinderandBoostercompressors.

Mode5:PrimaryTwocylinderandBoostercompressorsplus
W1(1ststageauxiliaryheat).

Mode6:W1(1ststageauxiliaryheat)

These6modesofheataredeterminedbyacombinationof
theY1andY2inputsfromthethermostatandtheoutdoorair
temperatureasseenbytheunit.

Thetablebelowillustratestheoperatingmodesallowedas
thetemperaturevaries.

FahrenheitCelsius
BINAAMB≤‐30°FAMB≤‐34.4°C
BINB‐30°F<AMB≤15°F‐34.4°C≤AMB<‐9.4°C
BINC15°F<AMB≤25°F‐9.4°C≤AMB<‐3.8°C
BIND25°F<AMB≤31°F‐3.8°C≤AMB<‐0.5°C
BINE31°F<AMB≤41°F‐0.5°C≤AMB<5°C
BINF41°F<AMB≤62°F5°C≤AMB<16.6°C
BINGAMB>62°FAMB>16.6°C
Table1:OutdoorAmbientTemperatureBins

NOTE:OncetheunitgoesfromM1toM2,theunitshall
notgobacktoM2(i.e.Stg1‐>Stg2willnotrevertback).This
istoreducethenumberofcompressorcyclesthatoccur.
Inthetablebelow,Y2OUTisonif“Y2O”isinthetable.







Troubleshooting
‐19‐
 HeatModesandY2OUTSTATEvs.BinsandY1/Y2
Deman
dCalls
BIN
A
BINBBINCBINDBINEBINFBIN
G
Y1M6/
Y2O
M4/
Y2O
M2M2M2/
Y2O
M1 M1
Y2M6/
Y2O
M5/
Y2O
M4/
Y2O
M3/
Y2O
M2/
Y2O
M2/
Y2O
M1
Table2:StateofY2OUTandHeatModevs.Bins

Atanytimewhilethethermostatisinheatingmode,the
systemcanbeplacedintoemergencyheatingmode,
energizingtheinstalledauxiliaryheatingsystem.

CoolingModeOperation
TheHallowellAcadiaoperateswith2stagesofcooling
capacityavailable,basedonthelevelofdemandfromthe
thermostat.Coolingmodeislimitedtooperationwhenthe
outdoorairtemperatureisabove50Ftoensurecorrect
operationofallcomponentsinthesystem.The2stagesof
coolingcapacityareillustratedbelow,withthemodesof
operationbeingidenticaltothemodesofoperationusedin
heatingmode.
COOLING

ThermostatCall<49F>50F
Y1N.A.M1
Y2N.A.M2

UnitIsNotDefrosting
Setthemanualdefrostjumperonthecontrolboardto
manual.Thisshouldstartadefrostcyclerightawayifthe
unitisrunning.Iftheunitdoesnotgointodefrost,checkthe
LEDsonthecontrolboard.TheLEDsthatshouldbelitareRV,
2Cyl,Y2O.Youshouldhearthereversingvalvethrow,and
theoutdoorfanshouldstop.Theprimarycompressorshould
berunning.
IftheRV(reversingvalve)didnotthrowandtheRVLEDislit,
checkfor24VACattheRVand24Coutputonthecontrol
board.Thisislocatedontheupperleftplugontheboard.If
youhave24VAC,checkthattheplugonRVisconnected.
Checkthewireforcontinuity.Ifthewireisok,thencheckthe
RVCoil.
Checktheresistanceofthereversingvalvecoil.Ifthecoilis
openorshorted,replacethecoil.
Ifthecoilchecksoutok,thenreplacetheRV.
IftheRVLEDislitandyoudonothave24vacattheRV
terminals,replacecontrolboard.
IftheRVLEDisnotlit,replacethecontrolboard.
Ifthemanualdefrostisfunctional,performtheTemperature
sensorfaulttest.

Callforservicelightcomesonduringadefrost
CheckwiringfromW1toXLtanandbrownwire,besurethey
areintherightposition.

PrimaryCompressorwillnotstart
IfnoLEDsarelittheunitmaybeinanantishortcycle.Be
suretogivetheunit3min.tostart.Checkthecontrolboard
foreitherthe1Cylor2CylLEDstobelit.IfnoLEDislit,check
theinputsignalfromthethermostat.Ifyouhaveaninput
fromthethermostatandoneoftheLEDsislit,verifythe
outputtothatLEDontheoutputplugontheupperleftof
controlboardfor24VAC.If24VACisnotpresent,replacethe
controlboard.
Ifthecontactorisnotpulledin,checkfor24VACatthe
contactorcoil.Ifyouhave24VAC,replacethecontactor.If
youdonothave24VAC,replacethewiringtothecontactor.
Checkthecontactor.Ifitispulledin,checkthestartinggear
ofthecompressor.Checkthestartandruncapsandthe
startingrelays.Ifyoufindaproblemwiththestartinggear,
replacethecomponent.Ifitisallok,checkthecompressor
windingsforanopenorshortedwinding.Ifthecompressoris
bad,contactHallowellInternationalLLCforanew
compressorwiththeprovisionsfortheOilEqualizationLine.

BoosterCompressorwillnotstart
CheckthecontrolboardfortheBEoutputLED.
IftheLEDisnoton,checkforthemodeofoperationtobe
surethatboostershouldbeon.PerformtheTemperature
SensorFaultTest.
Ifthatallchecksout,replacethecontrolboard.
IftheLEDison,checkfor24VACattheoutputterminalsfor
BEontheupperleftofthecontrolboard.Ifyoudonothave
24VAC,replacethecontrolboard.
Ifyoudohave24VAC,checktoseeifthecontactorispulled
in.CheckthestartinggearfortheBoosterCompressor.
Checkthestartandruncapsandstartrelay.Ifyoufinda
problemwiththestartinggear,replacethecomponent.
Ifthecontactorisnotpulledin,checkfor24VACatthe
contactorcoil.Ifso,replacethecontactor.Ifyoudonot
have24VAC,replacethewiring.
Ifthestartinggearchecksoutok,checkthecompressor
windingsforanopenorshort.Ifthecompressorisbad,
contactHallowellInternationalLLCforanewBooster
CompressorwiththeprovisionsfortheOilEqualizationLine.