06Air conditioning in Porsche vehiclesCayenne AHWord下载.docx
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06Air conditioning in Porsche vehiclesCayenne AHWord下载.docx
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mufflerisusedtominimisenoiseduringcombustion.
Operation(auxiliarywaterheating)
Controlandadjustmentofauxiliaryheatingisviathefrontair-conditioningcontrolpanel(beneaththecoverflapinthecentreconsole).Whentheauxiliaryheateris
running,theremainingrunningtimeisshownonthedisplay(seecontrolpanel
in
nextsection).
Theauxiliaryheatercanbeusedregardlessoftheignitionlockposition.IthasthreeindependentmemorylocationsforprogrammingtheONtimes.TheONtimecanbeprogrammedtogetherwiththeassociatedauxiliaryheatingorauxiliaryventilationfunctionineachmemorylocation.Topreventacoldairinflux,thefanisnotswitchedonuntilafteraslightdelaysothatonlywarmaircanflowintothepassengercompartmentoncetheheatingcircuithasbeenheatedup.When
auxiliaryheatingison,onlyonememorylocationcaneverbeactive(programmedandthenselectedONtime).
Inadditiontosettingtheauxiliaryheaterviatheair-conditioningcontrolpanel,thereistheoptionofswitchingthesystemonoroffviaaremotecontrolsuppliedwiththe
vehicle(RoWonly).Iftheauxiliaryheatinghasbeenswitchedonusingtheairconditioningcontrolpanel,itcannotbeswitchedoffwiththeremotecontrol.The
remotecontrolcanalsonotbeusedforadjustmentsinsuchcases.
Whenabuttonispressedontheremotecontrolandthereisalineofsightto
the
vehicle,anLEDlightsuptoindicatethatasignalhasbeentransmitted(transmissionfrequency868.5MHz).
Therangefortheremotecontrolisapprox.500m.Therangecanbereduceddependingonstructuralandspatialconditions(theauxiliaryheaterdoesnotprovide
feedbackonwhetherthesignalhasbeenreceived).
Theantennafortheauxiliaryheaterisanintegratedcomponentofthediversityantennasystem(antennasystemforaudio,centrallocking,navigationandtelephoneforexample)intheCayenne.Itislocatedintherearspoiler.Itshighinstallationpositionmeansthatitcanputitsreceptionpotentialtooptimumuse.
Thefollowingillustrationshowstheantennaoftheauxiliaryheaterwhentheupperpartoftherearspoilerisremoved.
Theantennaoftheauxiliaryheaterisroutedintotheinteriorofthevehicleviaa
cableductnexttothelefthingeoftherearlid.Itisconnectedtotherelevantamplifier.Theamplifierfortheantennaoftheauxiliaryheaterislocatedunderthe
roof(neartherearlidopening;
centre)behindtherooflining(roofliner).
Pipingdiagramsforauxiliaryheater(auxiliarywaterheater)
TheillustrationshowsthepipingdiagramfortheCayenneTurbo.
Status:
Auxiliaryheateron(heaterblowerrunning)
8_15k_03
Theaboveillustrationshowsthepipingdiagramoftheused/heatedheatcircuit,whichisseparatedfromtherefrigerantcircuitbythe3/2-wayvalve.The
valve
is
locatedabovetheauxiliaryheatingmoduleandisadjustedfromtheairconditioningsystemcontrolunit(controlpanel)fortheauxiliaryheatingfunction.
ThefollowingillustrationshowsthepipingdiagramfortheCayenneTurbo
1)Residualengineheat(heaterblowerrunning)
2)Heatoutputsupport(engineandheaterblowerrunning)
8_25k_03
Theaboveillustrationshowsthepipingdiagramforuseoftheresidualengineheatfunctioninconjunctionwithanoptionallyequippedauxiliaryheater.Onlythecirculationpumpinstalledasstandardisnecessarytousetheresidualheatfunction.Invehicleswithoutauxiliaryheaters,positions3and5arenotintegratedin
thereturnlineoftheheatingcircuit(thecontrollineforactivatingthe3/2-wayvalveisalsoabsent).
AuxiliaryheaterinCayennefrommodelyear2011onwards(auxiliary
water
heating)
Generalinformation
TheauxiliaryheateroptionallyavailableforallCayennemodels(apartfromtheCayenneSHybrid)makesitpossibletocreateapleasantclimatebeforethestartof
a
journeyinwinterandtoalsodefrostthewindscreen.Theauxiliaryheateris
basedontheprincipleofanauxiliarywaterheaterandisconnectedtothecoolingcircuitof
thecombustionengineandpassenger-compartmentheatexchanger.
Operation
Dependingontheversion,thecustomercanswitchontheauxiliaryheaterin
differentwaysatoutsidetemperaturesbelow15°
C:
∙Remotecontrol
∙Pressingabuttonintheoperatingandair-conditioningunit(centre
console)
∙Timerfunctionintheinstrumentcluster
Auxiliaryheatingmodeisswitchedoffwhentheengineisstarted
(enginespeed>
300rpm)oratthelatestafter30minutes.
Remotecontrol
Button“A”mustbepressedtoswitchontheauxiliaryheaterwiththeremotecontrol.TheLEDlightsupgreen.
TheauxiliaryheaterisswitchedoffbypressingtheOffbutton“B”.TheLEDlights
up
red.
Themaximumrange(approx.500m)ofthehand-heldtransmitterdependsonthechargestateofthebatteryaswellasonpossibleinterferencefrombuildingsandthegeneralsurroundings.
Theindicatorlight(LED)intheauxiliaryheaterbuttononthecentreconsolelightsupwhentheauxiliaryheaterisactivatedbytheremotecontrol.
Transmissionprotocoloftheindicatorlight(remotecontrol)
Button“A”ispressedtoSWITCHONtheheater(LEDlightsupgreen).Afterbutton“A”hasbeenpressed:
Lightflashesgreen->
Transmissionandswitch-onoperationsweresuccessful(auxiliaryheaterisreadyforoperation/auxiliaryheateris
switchedon).
Lightflashesred->
Switch-onoperationwasnotsuccessful,e.g.theauxiliaryheaterisnotreadyforoperation,vehicleisoutofrange,faultinthesystem/auxiliaryheaterisnotswitchedon.
Button“B”ispressedtoSWITCHOFFtheheater(LEDlightsupred).Afterbutton“B”hasbeenpressed:
Switch-offoperationwassuccessful(auxiliaryheaterdeactivated).
Pressingabuttonintheoperatingandair-conditioningunit(centre
Theindicatorlight(LED)intheauxiliaryheaterbuttononthecentreconsolelightsupwhenthebuttonintheoperatingandair-conditioningunitispressedtoswitchon
theauxiliaryheater.Theauxiliaryheaterisswitchedoffwhenthebuttonis
pressedagain(LEDinthebuttongoesout).
Timerfunctionintheinstrumentcluster
Iftheignitionisswitchedon,theauxiliaryheatercanbeswitchedonandoffonthemulti-functiondisplay(seeDriver’sManualforoperatingsteps).
Inaddition,itispossibletoprogrammethreetimesinthefuture(timer)for
switchingontheauxiliaryheater.After
∙Time
∙Date
itisthennecessarytoconfirman“input”(timer).
Selectionandconfirmationofa“timer”activatestheauxiliaryheater.Theindicatorlightintheauxiliaryheaterbuttononthecentreconsoleflashestoconfirmthis.
Theindicatorlight(LED)intheauxiliaryheaterbuttononthecentreconsolelights
upwhentheauxiliaryheaterisactivatedbythetimer.
Supplementaryheatingmode(auxiliarywaterheater)
ForthepetrolvariantsoftheCayenne,nosupplementaryheatingmodeiscurrentlyavailablefortheoptionalauxiliaryheater.
OnlyontheCayenneDieselfrommodelyear2011onwardscantheauxiliaryheater(diesel
version)alsobeusedasasupplementaryheater.Supplementaryheatingmodeisactivatedautomaticallyandassiststheenginewithcoldstarts.Rapidheatingofthepassengercompartmentisalsosupported.
ThetemperaturethresholdsforsupplementaryheatingmodeontheCayenneDiesel
areasfollows:
∙Startofsupplementaryheating:
outsidetemperature<
10
°
C
∙Deactivationthresholdforsupplementaryheatingmode:
coolanttemperature>
74
Componentsoftheauxiliaryheater
Theauxiliaryheater(heatingunit)ismanufacturedbyEberspä
cher.Most
componentsarelocatedbehindthewheel-housingtrimpanelatthefrontleft.
Heatingunitoftheauxiliaryheater(4-zonesystem,petrolanddiesel)
TheheatingunitonCayennepetrolmodelshasthesamefunctionanddesignas
heatingunitonthePanamera.
Waterpump
Theelectricwaterpump(circulationpump)islocatedundertheheatingunit.This
circulationpumprunswhentheauxiliaryheaterisactiveandpermitscirculationof
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