CGC SpaceKeeper SKH060 Owner's manual

R090303March4,2009
Installation
Operation
Maintenance
HybridHorizontal
HeatPump
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Spacekeeper
Models:SKH008–SKH060
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R090303March4,2009
TableofContents
1.INFORMATION.................................................................................................................................1
Handling/Storage..........................................................................................................................................1
Weight/Dimension/Clearances.....................................................................................................................2
2.INSTALLATION..................................................................................................................................3
GeneralInstallChecklist................................................................................................................................4
Location/Placement/Piping..........................................................................................................................5
Wiring............................................................................................................................................................6
3.OPERATION(CIRCUITPANEL)...........................................................................................................7
BoardDescription.........................................................................................................................................8
Fan.................................................................................................................................................................9
HeatOperation.............................................................................................................................................9
CoolStartUp.................................................................................................................................................9
CoolOperation............................................................................................................................................10
OperationalAlgorithm................................................................................................................................12
ThermostatConnection..............................................................................................................................12
ShutdownOutput........................................................................................................................................13
FaultAlarmOutput.....................................................................................................................................13
4.COMMISSION&STARTUP.............................................................................................................15
5.MAINTENANCE...............................................................................................................................17
SKH008‐SKH018WiringDiagram..............................................................................................................18
SKH020‐HKH060WiringDiagram..............................................................................................................19
6.APPENDIXA(DETAILS)...................................................................................................................20
SKH008‐SKH018.........................................................................................................................................21
SKH020‐HKH036........................................................................................................................................22
SKH042‐SKH060.........................................................................................................................................23

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual


INFORMATION

R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage1
Handling
Caremustbetakeninhandlingthehorizontalunitandotheraccessoriestoensurethatthis
equipmentdoesnotsustainanydamage.Itisrecommendedthatthehorizontalunitbe
transportedindividuallyonatwo–wheelcart

Theprotectiveshippingpackagingshouldbekeptonuntilreadyforinstallation.During
construction,theequipmentmustbeshelteredfromcontaminantsanddebrissuchasdrywall
dust,woodchips,orpaintthatcoulddamagethefan,orblockthecooling/heatingcoiland
diminishunitperformance.

Storage

Theunitmustatalltimesbestoredinanuprightpositionwiththecompressorsectiondown
andthefansectionorientedup.

Failuretomaintaintheunitinaverticalpositionmayresultindamagetointeriorunitpiping
andcomponentspossiblycausingpermanentunitdamage.Damageofthisnaturemayalso
resultfromdroppingtheunit.

Both,Unitshouldbestoredinacorrosivefreeenvironmentshelteredfromextreme
temperatureandhumidityconditions.Subjectingtheunittotheseconditionscouldresultin
significantlyreducedperformance,reliabilityandoperationlife.

Theunitisintendedforindooruseonly.Toprotecttheunitfromdamageduetotheelements,
andtopreventpossibleIndoorAirQuality(IAQ)contaminantsourcesfromgrowing,theunit
shouldbestoredindoors.Ifindoorstorageisnotpossible,thefollowingprovisionsforoutdoor
storagemustbemet:
1. Placetheunit(s)onadrysurfaceorriseabovethegroundtoassureadequateair
circulationbeneaththeunit.
2. Covertheunit(s)withawaterprooftarptoprotectthemfromtheelements.
3. Makeprovisionsforcontinuousventingofthecoveredunitstopreventmoisturefrom
accumulatingonunit(s)surfaces.Wetinteriorunitinsulationcanbecomeasitefor
microbialgrowthwhichhasbeendeterminedtobeacauseofodorsandserioushealth
relatedindoorairqualityproblems.
4. Storetheunitunitsintheoriginalpackaging.
5. Donotstackunits.

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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
INFORMATION
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R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage2
6. Weight/Dimension/Clearance
Weight:

Model008010012015018020024030036042048060
Weight
(lb)140140140140140235235235235285285285
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UnitDimension:

SEEAPPENDIXA‐Details


UnitClearance:

SEEAPPENDIXA‐Details
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HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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INSTALLATION
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TheInstallationofallhorizontalProductandcomponentsandaccessoriesmustbein
accordancewithlocalcodesandallregulationsofallgoverningauthoritieshavingjurisdiction.
ThefollowinginstallationproceduresarerecommendedbytheManufacturer.Itisthe
responsibilityoftheinstallingcontractortocomplywithallapplicablecodesandregulations.

.

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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INSTALLATION
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GENERALINSTALLATIONCHECK

Thelistbelowsummarizesthestepsrequiredtosuccessfullyinstallahorizontalunit.This
checklistshoulddefinethescopeoftheinstallationproceduresrequiredtoinstalltheunit.

1. Removepackagingandinspect
theunit.Checkforshipping
damageormaterialshortage;file
afreightclaimandnotify
appropriatesalesrepresentative,
ifdamageisfound.
2. Verifythecorrectmodel.
3. Verifythepowersupply
complieswiththenameplate
specification.
4. Connectproperlysizedand
protectedpowersupplywiring
tothedisconnect(notsupplied).
5. Installpropergroundingwiresto
anearthground.
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



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Figure1

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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INSTALLATION
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LOCATION

1. Determinefuturehorizontalmount
locationwithclearancesshown,in
appendixA.
2. Locatetheunitinanindoorarea.The
ambienttemperaturesurroundingthe
unitmustnotbelessthat45F(7C).Do
notlocatetheunitinareassubjectto
freezing.

PLACEMENT

1. PositiontheunitandfastentoCeiling
ensuringtheunitislevel.ExtensionRods
andRubberisolatorsaretobeused(if
supplied).
2. Provideaccessforfanandfanmotor
maintenanceandforservicingthe
compressorandcoilswithoutremoving
theunit.
3. Provideaccesstowatervalvesand
fittingsandscrewdriveraccesstotheunit
sidepanels,dischargecollarandall
electricalconnections.

PIPING

CAUTION:Pipingmustcomplywithallapplicable
codes.
1. Installshutoffvalvesateachunitto
permitunitremovalforservicing.
2. DONOTbendorkinksupplylinesor
hoses(Ifsupplied).Supplyandreturn
hosesarefittedwithswiveljointfittings
atoneendtoallowremovalforfuture
servicing.
Figure2

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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INSTALLATION
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NOTE:Insulationofthewaterpipingloopisnotrequiredexceptwherepipingrunsthrough
unheatedareasoroutsidethebuilding.TheNormalloopoperatingtemperatureis
between85F(29C)and120F(49C).

Wiring

1. WireRoomtemperaturesensortoelectricalpanelasindicatedbythewiringdiagram.
2. Connectpower.

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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OPERATION
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CAUTION:
Toavoidfouledmachinery,extensiveunitcleanupandvoidwarranty,donotoperateunits
withoutfiltersinplaceoruseasatemporaryheatsourceduringconstruction.

TheCGCGrouphybridheatPumpprovidesyearroundcoolingandheatingascontrolledby
yoursystemDDCcontrolpanel.

TheCGChybridheatpumpprovidescoolingwithawatercooledcompressorrefrigeration
circuitandprovidesheatingwithwarmwater.Thecompressoroperatesduringcooling
operationonlyanddoesnotoperateduringheatingoperationprovidingquieteroperating
soundlevelsandenergycostsavings.

Centralequipmentlocatedwithinthebuildingmechanicalroomisautomaticallycontrolledto
ensurethewatersuppliedtoeachheatpumpunitineachsuiteatthepropertemperature
ensuringcorrectoperation.


HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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OPERATION
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Theunitcircuitboardincorporatessixrelayoutputswiththefollowinguses:

•K1–Auxiliaryrelayforcoolingvalveonatwo‐valveunitorheatvalveonadehumidification
unit.
•K2–HeatingRelay
•K3–AlarmRelay
•K4–CompressorRelay
•K5–LowFanorFanRelayforbeltdriveunits
•K6–HighFanorCompressor#2onbeltdriveunits
EachoftheserelayshaveinparallelagreenLEDindicatorthatlightsupwhentherelayis
energized.
Theboardincorporatesdigitalinputsthatareopto‐coupledtoa24VACsource.Thesetoohave
amberLEDindicatorslocatedneartheinputlocations.Theselightupwhentheinputisclosed.
Theseinputsinclude:
•HighPressureSwitch
•LowPressureSwitch
•HeatCall(Wonthermostatterminal)
•CoolCall(Yonthermostatterminal)
•FanCall(Gonthermostatterminal)
•Auxiliary(Aonthermostatterminal)
•Compressorshutdown(24VACsignalthruO/O).
Providingacontinuous24VpotentialtoO/Owillterminateandpreventcompressor
operation.Thiscanbeusedfordutycycling,orforminimizingpowerconsumption
duringapowerfailurewhilemaintainingtheheatingfunction.
•Unitshutdown(24VACsignalthruA/O).Providingacontinuous24VACpotentialto
A/Owillterminateandpreventunitoperation.Thiscanbeusedforasimplenight
shutdown.Onbotharrangementsasinglesmall24VACcanshutdownmanyunits.¼
vaisrequiredperunit.
Finally,theboardhasfouranaloginputsprovidedviathermistors.Theseinputsareasfollows:
•Ta–DischargeAirTemperature
•Tr–RefrigerantTemperature
•Tw–Water(systemfluid)Temperature
•Co–CondensateLevel
Ta,Tr,AndTware10kOhmNTPthermistors,whileCoisa100OhmNPTthermistor.TheseInputs
donothaveLEDdisplays.

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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OPERATION
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
FAN
1. Acallon“G”forfanonthethermostatterminalstripwillcausethefantooperate
continuouslyonlowfanspeedthroughK5onmultispeedunits.
2. Acallon“W”forheatonthethermostatterminalstripwillalsocausethefanto
operateonlowspeed.After10minutesofcontinuousheatingcall,themultispeed
unitswillbeswitchedtohighspeedthroughRelayK6.
3. Acallon“Y”forcoolingonthethermostatterminalstripwillcausethefanonmulti
speedunitstoadvancetohighspeedthroughRelayK6.
4. Fanoperationwillterminatewheneverallcallsaredropped.
5. BothRelaysandtheirLED’sareenergizedonHighSpeed.

HEATOPERATION

1. Acallon“W”forheatwillturnonthefanatlowspeed.Simultaneouslyitwillenergize
theheatrelayK2anditsLED.TherelayK2willprovides24VACfusedpowerdirectlyto
theheatvalve.

COOLSTARTUP

1. Acallon“Y”forcoolinginitiatesaseriesofcheckspriortothestartupofthe
compressor.Theseare:
a. PowerONtimer–Compressoroperationisdelayedforapproximately5‐minutes
afterrestorationofpower.Thispreventsallunitscomingonlineatthesame
timethatpowerisrestored.Italsopreventscompressorjoltingwith
intermittentpower.
b. Anti‐recycletimer–Thereisa5‐minuteanti‐recycledelaytimerthatgivesthe
refrigerantcycletimeaftershutdowntoachievepressureequalizationtoallow
foranunloadedcompressorstart.
c. HighPressureSwitch–Thehighrefrigerantpressureswitchmustbeclosedprior
tostart.LED11lampwillbeON.
d. LowPressureSwitch–Thelowpressureswitchoperatesprimarilyasalossof
chargeprotector.ItmustbeclosedforcompressorstartupanditsLED12willbe
ON.Thepressureswitchhasa5minuteignoresubsequenttostart‐up.Insome

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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situations,particularlywhentheunitiscold,thepressureswitchwillopenduring
start‐up.Iftheswitchdoesnotremakewiththe5minuteignoreperiod,the
compressorwillbeimmediatelystopped.
e. AirtemperaturesensorTa–SensorTawillpreventcompressoroperationifthe
airflowingthroughtheunitisbelow60°F(15°C).
f. WatertemperaturesensorTw–SensorTwwillpreventcompressoroperationif
thesystemfluidtemperatureisabove125°F(52°C).
g. RefrigeranttemperaturesensorTr–SensorTrwillpreventcompressor
operationifthecoiltemperatureisbelow35°F(2°C).
h. AnyoftheabovefaultswillbeindicatedwiththeDiagnosticCodedescribed
underDIAGNOSTICS

COOLOPERATION

2. Monitoringoftherefrigerantcycleoperationcontinuesduringoperationofthe
compressor.Thefollowingmalfunctionswillcausecompressorshutdown:
a. Iftheheadpressureexceedsthesetpointofthehighpressureswitch,itwill
open,andthecontrolboardwillterminatethecompressoroperationwithin10
seconds.Atthistimetheflashcode6willbeinitiatedonthereddiagnosticLED
15.Compressoroperationwillberestoredinaccordancewiththe“Intelligent
reset”algorithm.
b. Ifthesuctionpressuredropsbelowthesetpointofthelowpressureswitch,the
switchwillopenandifitremainsopenbeyondthe5minuteignoreperiodafter
startup,compressoroperationwillbeterminatedwithin10seconds.
Compressoroperationwillberestoredinaccordancewiththe“Intelligentreset”
algorithm.A5flashonthereddiagnosticLED15willbeinitiatedatthistime.
c. Intelligentresetalgorithm–Ifaloworhighpressureswitchopensandremains
openformorethan10minutes,ahardlockoutwillbeinitiatedandthecooling
modewillbelockedoffuntilthecontrolsaremanuallyreset.Atthesametime
thefaultrelayK3willbesettoalarm.Ifhowever,theopenswitchcloseswithin
10minutes,arestartcycleisinitiated.Therestartcyclebeginswitha10minute
delay,afterwhichifthereisacoolcallinplaceandallotherenablersarewithin
thestartparametersthecompressorwillagainbeputintooperation.Should
eitherofthepressureswitchesopenagain,theshutdownprocedurewillcycle
again,followedbyarestart.Theintelligentresetwillallowtwoopenswitch
shutdownsandrestartsina24hourperiod,butathirdshutdownwithin24
hourswillputtherefrigerationsystemintoafullandhardlockout,requiringa

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powerdowntoreset.Iftwoorlessswitchopenshutdownsoccurwithina24
hourperiod,theywillbeerasedfrommemoryandwillnotcontributetoafuture
hardlockout.(Ahardlockoutwillpreventcompressoroperationuntilthe
controlsarepowereddownforatleast20seconds,thegreenpowerlightgoes
out,whileasoftlockoutisacompressorshutdownthatwillberestoredoncethe
conditioncausingtheshutdownreturnstonormal.)
d. Duringcompressoroperation,refrigeranttemperature,systemfluid
temperatureanddischargeairtemperaturearecontinuouslymonitored.Ifthe
refrigeranttemperaturedropsbelow35°Fcompressoroperationwillbe
disabled.Itwillbeenabledassoonasthetemperaturerisesabove60°F.Actual
compressorrestartwillbedelayedaminimumof5minutesbytheanti‐recycle
timer.A2flashcodewillbeinitiatedwithalowrefrigeranttemperature
shutdown.
e. Ifthesystemfluidtemperaturerisesabove125°Fcompressorstartupwillbe
disabled.Itwillbeenabledassoonasthetemperaturedropsbelow120°F.Once
compressoroperationisestablished,theshutdowntemperaturewillbe
increasedto145°F.Thesystemfluidsensorismountedontheleavingfluidpipe.
Actualcompressorrestartwillbedelayedaminimumof5minutesbytheanti‐
recycletimer.A3flashcodewillbeinitiatedwithahighsystemfluid
temperatureshutdown.
f. Ifthedischargeairtemperaturedropsbelow50°Fcompressoroperationwillbe
disabled.Itwillbeenabledassoonasthetemperaturerisesabove60°F.The
dischargeairtemperaturesensorismountedonthefanscroll.Actual
compressorrestartwillbedelayedaminimumof5minutesbytheanti‐recycle
timer.A4flashcodewillbeinitiatedwithalowairtemperatureshutdown.
g. Thecondensatelevelsensorisa100ohmthermistorthatisheatedfor15
secondsevery4minutes.Itstemperatureismeasuredatthebeginningofthe
heatcycle,andagainattheendoftheheatingcycle.Ifthecondensatelevelrises
abovethesensoritwillnotwarmupduringthewarmupcycle,andthe
temperaturechangewillbeinsignificant.Itisthislackoftemperaturechange
thatthecontrollerseesasanimpendingcondensateoverflow.Whenhigh
condensatelevelisdetected,compressoroperationisimmediatelyterminated,
andatthesametimethefanisstoppedfor30seconds,andthenrestarted.At
thistimea7flashcodewillbegin.The4minutecyclewillcontinueuntilthe
coolingcallisnolongerinplace.Ifthecondensateleveldropsbelowthesensor,
compressoroperationwillbereturnedtonormal.However,ifthecondensate
levelstaysabovethesensorformorethan15minutes,thefaultalarmwillbe

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triggered.Thisfaultsignalwillautomaticallyresetoncethecondensatelevel
goesbelowthesensor.

Note:Lastflashcodewillbemaintainedinmemoryfor1weekoruntilunitcontrolsarepowered
down.Flashcodewillcontinueunlesstheproblemhasclearedandthecompressorhasbeenput
intooperation.Ifacoolingcallisinplaceonemustremovethatcallinordertocheckthecauseof
thelastalarmshutdown.

OPERATIONALGORITHM

Thereareseveralcontrolalgorithmstopreventcyclingandproblematicoperation.Theseare:
1. Doublecall–Ifthermostatconnectionsorsetupisincorrect,resultinginasimultaneous
callforbothheatingandcooling,theunitwillnotoperate.Thisconditioncanbe
observedonthethermostatconnectionLEDs.(Note:Aheatpumpthermostatwill
presentthisscenario)
2. Reversecyclecall–Poorlylocatedautomaticchangeoverthermostats(thermostats
mountedonawalloppositeadischargegrillethatisexposedtodischargeair
temperatureswillswitchfromheattocoolcontinuously,orathermostatinadoorway
tooutside)cancausemodechangesmanytimesanhour.TheCGCcontrollerhasa10‐
minuteanti‐modechangetimerforbothheatingandcoolingmodechanges.The
controllerwillnotacceptachangeinmodefor10minutesaftertheoppositecallwas
terminated.

THERMOSTATCONNECTIONS

TheCGCcontrolboardhasbeendesignedtooperatewithmoststandard24VACthermostats.
ThesearepoweredfromtheCGCboardwith24VACandsimplyswitchpowerONtoeachofthe
Heat(W),Cool(Y),Fan(G)orAux(A).Whilemostpresentdaythermostatsoperateinthismanner
thereareothersthatmayormaynotworkproperly.Thefollowingshouldbecheckedoutfor
satisfactoryperformancepriortoinstalling:
1. HeatPumpThermostat–Someheatpumpunitsdonothaveheatrelays(thereforeare
notcompatiblewithstandardthermostats)andrequire“HeatPumpThermostats”.
Thesethermostatscallforbothheatingandcoolingononeofthesignalwires.These
thermostatsarecompletelyincompatiblewithCGC’scontroller.
2. Mercurybulbthermostat‐Thistypeisproblematicbutcanbeused.Unfortunately,the
anticipatorsareaproblem.Heatanticipatorsmustbeinserieswithahighcurrentrelay
orvalvetofunction,sodonotperformonanelectroniccircuit.Thiswillresultinlarger

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thannormaltemperatureswings.Thecoolanticipatorifoversizedcanbleedenough
currenttoindicateacoolingcallevenafterithasbeenterminated.
3. Batterypoweredthermostats–Thesethermostatsweredevelopedasreplacementsfor
oldmercurybulbthermostatsthathad4wireconnectionswhile24Velectronic
thermostatsrequired5wires.ThesewillworkwithaCGCboard,althoughCGCdoesnot
recommendthem.Theyrequireperiodicbatteryreplacement,whichissomethingthat
shouldbeavoided.
4. Powerstealingthermostats–Thistypeiselectronicandwasalsodevelopedasa
replacementforoldmercurybulbthermostats.Thesetooareproblematicinthatthey
bleedasmallamountofcurrentdownthesignalwiresandthismaybeinterpretedasa
signalforheatorcool.
5. Triacswitchedcontrollers–Thisisacommonlyusedswitchingdeviceandallcontrollers
testedtodatehavefunctionedflawlessly.CGCrecommendsthatpriortoinstallationof
athirdpartysuppliedcontroller,itbecheckedforcompatibility.CGCcanconfirmthis.
6. Relayswitchedcontrollers–ThistypeofcontrollerworkswellwithCGCdevices.

SHUTDOWNOUTPUT

TheCGCboardhasanoptionalinputterminalstripthatallowsfortwotypesofremoteshutdown.
Thesearea)compressorshutdownandb)unitshutdown.
Theadvantageoftheseinputsisthatmanyunitscanbeconnectedinparallelandwhenpowered
byanindependent24VACsignaloneorbothoftheseactionscanbeimplemented.Commonuses
are:
a. Dutycyclingfordemandcontrol
b. Globalnightsetback
c. Heatingonlymodeduringemergencypowerperiods

TheCGCcontrollerisalsosetupsotheseshutdownfunctionscanbeinitiatedindividuallywithon
board24Vpower.Thiscapabilityallowsunitorcompressorshutdownbasedonadoorswitch,a
lightswitch,oroccupancyswitch.Aseparate24Vpowersupplyisrequirediftwoormoreunitsare
beingshutdown.

FAULTALARMOUTPUT

TheCGCboardisprovidedwithafaultalarmindicationandoutput.Thefaultalarmrelaythat
providesnormallyopenandnormallyclosedcontactsforuseintransmittingfaultconditions.
NOTE:ThefaultalarmisenergizedforNORMAL,andde‐energizedforfault.Assuchiftheunitis

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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OPERATION
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R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage14
notpowered,iftheboardfuseisblown,oriftheelectronicsaredamaged,afaultconditionwill
beindicated.

ThefaultrelayisparalleledwiththeFaultLEDwhichwillbeONwhennofaultconditionexists.
Otherfaultconditionsare:
d. Hardlockoutduetohighorlowpressureswitchbeingopenfor10minutesorlonger.
e. Hardlockoutduetothreehighorlowpressureshutdownsina24hourperiod.
f. Highlevelcondensateforinexcessof15minutes.


HybridHorizontalSpackeeper–InstallationOperationMaintenanceManual

COMMISSION&STARTUP
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R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage15
SystemFlushing:
Propersystemcleaningandflushingisanimportantaspectofthecommissioningandstartup
procedureforHybridUnits.Ensurethesystemhasbeenflushedproperly.Thisprevents
foulingoftheunitheatexchangers.

NOTE:Hydroniccoilsarenot100%drainable.

SystemFluid:
Ensurethatsystemwatertemperatureiswithinanacceptablerangetofacilitatestart‐up(80‐
120F)forcoolingand(100–140F)forheating

SystemWaterpH:
SystemwatershouldhaveaneutralpHbalanceofapproximately7.5,whichwillextendthelife
ofthehoses,heatexchange,andotherwatersideaccessories.

WaterFlowRate:
Openallisolationvalvestotheunit.Ensurethattheenteringandleavingfluidtemperaturesof
theHybridunitinoperationareacceptable.Typicallyan8to12degreedroporrisein
temperature,dependingonwhethertheunitisincoolingorheating.Underextreme
conditions,slightvariancesinthetemperaturemaybenoted.

FreezeProtectionfromwaterSystem:
Ensurethatfreezeprotectionisprovidedfortheoutdoorportionoftheloopwatersystem.
Inadequatefreezeprotectioncanleadtocoildamage.

NOTE:Apotentialsituationmayoccurduringconstructionwherethesystemfluidloopis
drainedafterbeingcleaned,flushedandtested.Hybridhorizontalunitwillnotcompletely
drainandmayholdfluidinthecondenserorheatingcoil.Extensivedamagemayresultto
internalcomponentsifthesystemfluidfreezesunlessadequateglycolisadded.

RemoveAirfromSystemfluidLoop:
Airinthesystemimpairsunitoperationandcancauseerosioninthesystempiping.

HybridHorizontalSpackeeper–InstallationOperationMaintenanceManual
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COMMISSION&STARTUP
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R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage16
CleanUnitFilters:
Checktoensuretheunitfiltersareclean.Thiscontributestotheproperoperationoftheunit
byensuringadequateairflowacrossthecoil.AVacuummaybeusedtoremoveanydebrisor
dirtlodgedinorontheunits.

FanRotation:
Inspectfansectiontoensureitiscleanofanydebrisandthatthefanrotatesfreelyaswellas
belttension.

NOTE:ThisequipmentisdesignedforindoorinstallationONLY.



HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual
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MAINTENANCE
R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage17
WARNING:
Topreventinjuryordeathduetoelectricalshockorcontactwithmovingparts,disablethe
unitusingthedisconnectbeforeservicing.

InspectFilters:
Establisharegularmaintenanceschedule.Cleanfiltersfrequentlyandreplaceasneeded.

Toremovethefilterfromtheunitliftthefilterupandpullitoutoftheunitatthebottom.
Replacetheoldfilterbyslidingthetopedgeofanewfilterupintotherack,thenpushinginthe
bottomofthefilteruntilitdropsinplace.

CheckFanmotorsannually:
Allhybridheatpumpsarepermanentlylubricatedwhenshippedfromthefactory.Donotoil
fanmotors.Checkbelttensions,wheelspinsfreely,andnotexcessivelydirty.

VisualInspection:
Visuallyinspectunitsgivingspecialattentiontohoseassemblies.Noteanysignsof
deteriorationorcrackingandrepairleaksimmediately.

AmperageCheckoncompressorandfanmotor:
Currentdrawonthisequipmentshouldnotexceednormalfullloadorratedloadampsbymore
than10percentofthevaluesnotedontheunitnameplate.

SafetyControlReset:
Allhybridheatpumpsincludehighandlowpressurecutoutstopreventthemachinefrom
operatingatabnormalconditionsoftemperatureorwaterflow.Toresetalarmlockout,power
unitdownfor20seconds.

NOTE:Iftheunitmustberesetmorethantwice,checktheunitforadirtyfilter,abnormal
enteringwatertemperature,inadequatewaterflow(deltaTmethod)andinternal
malfunctions.Iftheunitcontinuestocutout,contactatrainedservicetechnician.

HybridHorizontalSpacekeeper–InstallationOperationMaintenanceManual

MAINTENANCE–STANDARDWIRINGDIAGRAM
R090303InstallationOperationMaintenanceManualissubjecttochangewithoutnoticePage18
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