SystemAir SAVE VTC 300 Installation And Service

SAVEVTC300

HeatRecoveryVentilationUnit

InstallationandService

Systemairisnotliableorboundbywarrantyiftheseinstructionsarenot
adheredtoduringinstallationorservice.

©2015CopyrightSystemairAB

SystemairABcanacceptnoresponsibilityforpossibleerrorsincatalogues,brochuresandotherprinted
material.SystemairABreservestherighttoalteritsproductswithoutnotice.Thisalsoappliestoproducts
alreadyonorderprovidedthatsuchalterationscanbemadewithoutsubsequentialchangesbeing
necessaryinspecicationsalreadyagreed.

Allrightsreserved.

Documentinoriginallanguage

207232-EN_GB

2015-11-04A007

Contents

1DeclarationofConformity...........................................................................................................1

2Disposalandrecycling...............................................................................................................2

3Warnings...................................................................................................................................2

4Productinformation....................................................................................................................3

4.1General...........................................................................................................................3

4.2T echnicalData.................................................................................................................4

4.2.1DimensionsandWeight...........................................................................................4

4.2.2RequiredSpace......................................................................................................6

4.2.3Powerconsumptionandfusesize............................................................................6

4.3Transportandstorage.......................................................................................................6

5Installation.................................................................................................................................7

5.1Unpacking........................................................................................................................7

5.2Where/howtoinstall.........................................................................................................7

5.3InstallingtheUnit..............................................................................................................8

5.3.1InstallationProcedureSAVEVTC300.....................................................................8

5.3.2ElectricalConnections.............................................................................................10

5.3.3InstallationprocedureElectricalRe-heaterbattery.....................................................13

6Operation..................................................................................................................................18

6.1Controlpanel...................................................................................................................18

6.1.1Displaysymbols......................................................................................................19

6.2Servicemenuoverview.....................................................................................................20

6.3Settingthetemperature....................................................................................................30

6.4Manualsettingofairow...................................................................................................30

6.5Manualandautomaticsummermode................................................................................31

6.6Coolrecovery...................................................................................................................31

7Commissioning..........................................................................................................................32

7.1Startupwizard.................................................................................................................32

7.1.1Procedure..............................................................................................................32

7.1.2PerformFactoryreset..............................................................................................33

7.2Defrostsettings................................................................................................................34

7.2.1Settingthedefrostlevel...........................................................................................35

7.3ProgrammingtheWeekschedule......................................................................................36

7.4Extrafunctions.................................................................................................................37

8Beforestartingthesystem..........................................................................................................37

9Service......................................................................................................................................37

9.1Warnings.........................................................................................................................38

9.2InternalComponents........................................................................................................39

9.2.1DescriptionofComponents......................................................................................40

9.3Troubleshooting...............................................................................................................42

9.3.1Alarmlist................................................................................................................43

1DeclarationofConformity

Manufacturer

SystemairUAB

Linųst.101

LT–20174Ukmergė,LITHUANIA

Ofce:[phone]Fax:[phone]

www.systemair.com

herebyconrmsthatthefollowingproduct:

Heatrecoveryventilationunit:SAVEVTC300

(Thedeclarationappliesonlytoproductintheconditionitwasdeliveredinandinstalledinthefacilityin
accordancewiththeincludedinstallationinstructions.Theinsurancedoesnotcovercomponentsthatare
addedoractionscarriedoutsubsequentlyontheproduct).

Complywithallapplicablerequirementsinthefollowingdirectives:

•MachineryDirective2006/42/EC

•LowVoltageDirective2006/95/EC

•EMCDirective2004/108/EC

•EcodesignDirective2009/125/EC

Thefollowingregulationsareappliedinapplicableparts:

1253/2014Requirementsforventilationunits

1254/2014Energylabellingofresidentialventilationunits

327/2011Requirementsforfansabove125W

Thefollowingharmonizedstandardsareappliedinapplicableparts:

ENISO12100:2010Safetyofmachinery-Generalprinciplesfordesign-Riskassessmentandrisk

reduction

EN13857

Safetyofmachinery–Safetydistancestopreventhazardzonesbeingreached
byupperorlowerlimbs

EN60335-1

Householdandsimilarelectricalappliances–SafetyPart1:Generalrequirements

EN60335-2-40

Safetyofhouseholdandsimilarelectricalappliances–Part2-40:Particular
requirementsforelectricalheatpumps,air-conditionersanddehumidiers

EN62233

Measurementmethodsforelectromagneticeldsofhouseholdappliancesand
similarapparatuswithregardtohumanexposure

EN50106:2007

Safetyofhouseholdandsimilarappliances–Particularrulesforroutinetests
referringtoappliancesunderthescopeofEN60335-1andEN60967

EN61000-6-2

Electromagneticcompatibility(EMC)–Part6-2:Genericstandards–Immunity
forindustrialenvironments

EN61000-6-3

Electromagneticcompatibility(EMC)–Part6-3:Genericstandards–Emission
standardsforresidential,commercialandlight-industrialenvironments

Skinnskatteberg,29-10-2015

MatsSándor

TechnicalDirector

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2Disposalandrecycling

ThisproductareapplicabletotheWEEEdirective.Whendisposingtheunit,follow
yourlocalrulesandregulations.

Thisproductpackingmaterialsarerecyclableandcanbereused.Donotdisposein
householdwaste.

3Warnings

Thefollowingadmonitionswillbepresentedindifferentsectionsofthedocument:

Danger

•Makesurethatthemainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!

•Allelectricalconnectionsandmaintenanceworkmustbecarriedoutbyanauthorizedinstallerand
inaccordancewithlocalrulesandregulations.

Warning

•Thesystemshouldoperatecontinuously,andonlybestoppedformaintenance/service.

•Theinstallationoftheunitandcompleteventilationsystemmustbeperformedbyanauthorized
installerandinaccordancewithlocalrulesandregulations.

•Bewareofsharpedgesduringmountingandmaintenance.Useprotectivegloves.

•AllthoughtheMainssupplytotheunithasbeendisconnectedthereisstillriskforinjurydueto
rotatingpartsthathavenotcometoacompletestandstill.

•Makesurethatltersaremountedbeforestartingtheunit.

•Thisproductmustonlybeoperatedbyapersonwhichhassuitableknowledgeoreducationwithin
thiseldorcarriedoutwiththesupervisionofasuitablyqualiedperson.

Caution

•Donotconnecttumbledryerstotheventilationsystem.

•Ductconnections/ductendsmustbecoveredduringstorageandinstallation.

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4Productinformation

4.1General

ThisinstallationmanualconcernsairhandlingunittypeSAVEVTC300manufacturedbySystemairAB.

SAVEVTC300includethefollowingmodeloptions:

RightorLeftmodels:R(Right),L(Left)(seegure2).

Thedifferentmodelsarerecognizedbythecontrolpanelwhichissituatedontherightsideoftheunit
inan(R)unitandontheleftsideinan(L)unit.

Re-heaterbattery(electricalorwaterheatingbattery)isoptionalandcanbeorderedasanaccessory.

Thismanualconsistsofbasicinformationandrecommendationsconcerningthedesign,installation,
start-upandoperation,toensureaproperfail-freeoperationoftheunit.

Thekeytoproperandsafeoperatingoftheunitistoreadthismanualthoroughly ,usetheunitaccordingto
givenguidelinesandfollowallsafetyrequirements.

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4.2TechnicalData

4.2.1DimensionsandWeight

Fig.1Dimensions(mm)andWeight,drawnasarighthandconnectedunit

ModelAB

C

DEF

G

HI

VTC300

762

1

758616553857802406139279

1.Inspectionhatch

ModelJK

L

MN

O

P

QWeight(kg)

VTC300

1311311394211602791521772

Y:½″outerthread

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4.2.1.1ConnectionsRightandLeftModels

Fig.2RightandLeftmodels

PositionDescription

R

Righthandmodel(Supplyairconnectionandcontrolpanelissituatedon
therighthandsideoftheunitviewedfromthefront)

L

Lefthandmodel(Supplyairconnectionandcontrolpanelissituatedonthe
lefthandsideoftheunitviewedfromthefront)

Table1:Symboldescription

Symbol

Description

A

Supplyair

BExhaustair

COutdoorair

DExtractair

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4.2.2RequiredSpace

Fig.3Spacerequired

ModelAB

VTC300

15071332

Note:

DonotplacethesidemarkedX(gure3)tooclosetoasidewall(distancetosidewallmustbeatleast
150mm).Makesurethattheinspectiondoorcanbeopenedsufcientlytoalloweasymaintenanceand
changingoflters.Ifnecessarytheinspectiondoorcanberemovedcompletely(see“Usermanual”
fordetails).

4.2.3Powerconsumptionandfusesize

Table2:PowerConsumption

Model

Fans(W)Heater(W)Total(W)Fuse(mains)

(A)

VTC300

170

–

17010

VTC300withreheater

1701700187010

4.3Transportandstorage

TheSAVEVTC300shouldbestoredandtransportedinsuchawaythatitisprotectedagainstphysical
damagethatcanharmpanelsetc.Itshouldbecoveredsodust,rainandsnowcannotenteranddamage
theunitanditscomponents.

Theapplianceisdeliveredinonepiececontainingallnecessarycomponents,wrappedinplasticona
palletforeasytransportation.

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5Installation

Thissectiondescribeshowtoinstalltheunitcorrectly.T oensureaproperandfailfreeoperationitis
importantthattheunitisinstalledaccordingtotheseinstructions.

5.1Unpacking

Verifythatallorderedequipmentaredeliveredbeforestartingtheinstallation.Anydiscrepanciesfromthe
orderedequipmentmustbereportedtothesupplierofSystemairproducts.

5.2Where/howtoinstall

SAVEVTC300aremeantforindoorinstallationinaheatedspace.Mounttheunitonaverticalat
surface.It’simportantthattheunitiscompletelylevelledbeforeitisputintooperation.

Placetheunitpreferablyinaseparateroom(e.g.storage,laundryroomorsimilar).

Whenchoosingthelocationitshouldbekeptinmindthattheunitrequiresmaintenanceregularlyand
thattheinspectiondoorshouldbeeasilyaccessible.Leavefreespaceforopeningthedoorandfor
takingoutthemaincomponents(gure3).

Theoutdoorairintakeofthebuildingshouldifpossiblebeputinthenorthernoreasternsideofthebuilding
andawayfromotherexhaustoutletslikekitchenfanexhaustsorlaundryroomoutlets.

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5.3InstallingtheUnit

Theunitmustbeinstalledinthefollowingposition(gure4).Itisimportantthattheunitiscompletely
verticalinorderforthecondensationdrainagetoworkproperly.

Fig.4Installationposition(righthandunit)

5.3.1InstallationProcedureSAVEVTC300

1

Preparethesurfacewheretheunitistobemounted.Makesurethatthesurfaceisat,levelledandthat
itsupportstheweightoftheunit.Performtheinstallationinaccordancewithlocalrulesandregulations.

2

Fitthemountingbracket(pos.1)withtheanti
vibrationpad(pos.2)tothewallwithenclosed
screws.Useappropriateholestoscrewthe
bracketrmlytothewall.Bottomsideofbracket
shouldbe40mm(H)belowtopofunitposition.

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3

Lifttheunitinplace

Warning

Bewareofsharpedgesduringmountingand
maintenance.Useprotectivegloves

Note:

Assurethattheunitiscompletelyverticalonce
mountedonthewall.Theunitmustnotbetipping
forwardinorderforthecondensationdrainageto
function.

4

Connectthecondensatedrainagetothe2drain
plugsinthebottomoftheunit.Makesuretouse
correctdraintrapsonbothconnections.Theheight
(H)mustbeatleast60mm.Draintrapsarenot
includedondeliveryandcannotbeobtainedfrom
Systemair.

5

Connecttheunittotheductsystem.Makesurethatallnecessaryaccessoriesareusedtocreatea
functionalventilationsolution.

Warning

Theinstallationoftheunitandcompleteventilationsystemmustbeperformedbyanauthorized
installerandinaccordancewithlocalrulesandregulations.

6

Connecttheunitelectricallytothemainswiththeenclosedplugandcheckthatitstartsupcorrectly.

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5.3.2ElectricalConnections

TheSAVEVTC300iswiredinternallyfromfactory.Theelectricalconnectionboxcanbefoundinthe
supplyairfancompartment.Thetopcoverplateisremovedbyremoving2screwsinthelowerfrontedge
ofthecoverplate(gure5).

Allexternalconnectionstopossibleaccessoriesaremadetoterminalsonthemainprintcard(chapter

5.3.2.2).

Fig.5Openingtheelectricalconnectionbox

Danger

•MakesurethattheMainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!

•Allelectricalconnectionsmustbecarriedoutbyanauthorizedinstallerandinaccordancewith
localrulesandregulations.

5.3.2.1Printcardlayout

TheSAVEVTC300isequippedwithbuilt-inregulationandinternalwiring.

Thegureshowstheprintcard.Seewiringdiagramformoreinformation.

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Fig.6Printcard

PositionDescription

1Mainprintcard

2

Printcardforelectricalheater

3

Connectiontoexternalcontrolpanel(connectedtounitcasing)

4Mainssupplyconnectionbetweenmainprintcardandelectricalheaterprintcard

5

TerminalsforAI1–5(tempsensors)andmotorcontrol

6

Terminalsforexternalconnections

7

Terminalsformainssupplyconnections

8

Terminalsfordigitalinputs(DI1–7)

9

Terminalsforinternalcontrolpanel.

10

Terminalsforregulatedpowersupplytoelectricalheater

11

Modbusconnection.See"UsermanualModbus"fordetails.

12

Terminalsforinternalrelativehumiditysensor

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5.3.2.2Externalconnectionsontheprintcard

Connectionterminalsforexternalequipmentcanbefoundonthemainprintcardinsidetheelectrical
connectionbox.

Fig.7Externalconnectionsontheprintcard

PositionDescriptionRemark

1

Outdoor/exhaustairdamperNormallyopen,230V1~,max0,1A/

24VAC1A

2

Outdoor/exhaustairdamperReference

3

Outdoor/exhaustairdamperNormallyclosed,230V1~,max0,1A/

24VAC1A

4

Sumalarm

Normallyopen,24V ,max1A

5

SumalarmReference

6

Sumalarm

Normallyclosed,24V ,max1A

7

GNDReference

8

Watercoolercontrolsignal(AO2)0–10VDC

9

GNDReference

10

Waterheatercontrolsignal(AO1)0–10VDC

11

GNDReference

12

Bypassdamper/Rotorcontrol(AO3)Ifused,0–10VDC

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5.3.2.3Externalconnectionsontopoftheunit

Twooftheconnectionsonthemainprintcardarewiredtoplugsontheunitcasing:

•connectiontoanexternalcontrolpanelthroughamodularconnector.
Maximumcablelength:50m.
Cabletype:Flat4–conductorCECPhonecable,orequivalent.

•ExternalModbusconnector.
Maximumcablelength:90mincableduct+10minworkingarea.
Cabletype:LANTCPCat5E4x2XAWG24cable.

•connectiontoDI3withpossibilitytocongurethefanspeedsindividuallythroughapotentialfree
on/offswitch

Fig.8Connectionsontopoftheunitcasing

PositionDescription

1

Connectiontoexternalcontrolpanel

2

ConnectiontoDI3throughanon/offswitch

3ExternalModbusconnection

5.3.3InstallationprocedureElectricalRe-heaterbattery

Anelectricalre-heaterbatterycanbeorderedasanaccessoryandbeinstalledinsidetheunit.Below
instructiondescribestheprocedurefortheinstallationinarighthandunit.

Danger

•MakesurethattheMainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!

•Allelectricalmaintenanceworkmustbecarriedoutbyanauthorizedinstallerandinaccordancewith
localrulesandregulations.

1

Disconnecttheunitfromthemainssupply

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2

Openthefronthatch

3

Removetheupperplatetotherightoftheheat
exchanger(pos.1)bylooseningthe4screws
(pos.2)

4

Removetheplatecoveringtheelectrical
connectionbox(pos.1)bylooseningthe2screws
inthelowerfrontedgeoftheplate(pos.2)

5

Removethe3screwswiththeblackknobs(pos.

1)fromtheinnercasing.

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6

Removethecoveringplate(pos.1)oftheelectrical
re-heaterbylooseningthe3screws(pos.2)

7

Inserttheelectricalre-heaterkit(pos.1)inthe
compartmentnexttothesupplyairfanandfasten
themountingbracketagainsttheinnerwallswith
the3blackknobscrews.

8

Leadthegray4leadcable,containingthewiring
forthemainssupplyandemergencythermostat
(ET),andtheblack2leadOTsensorcablethrough
thepreparedleadthrough’s(pos.1)situated
intheplateseparatingthere-heaterandmotor
compartments.The2cablesarethenleadthrough
thepreparedleadthrough’smarkedbypos.2in
theillustration.

9

Fastenthere-heatercoverplatewiththe4preparedscrewsasillustratedinstepno.6.

10

Continuewithfasteningthere-heaterprintcard
(pos.1)ontheprepareddistances(pos.2)next
tothemainprintcardwiththe4enclosedscrews.
Connectittothemainprintcardbytheuseofthe
preparedconnectionsonthesideofthe2circuit
boards.

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11

Connecttheblueandbrowncables(pos.1)to
thefreeL/Nterminalsonthemainprintcard.See
wiringdiagramfordetailedinformation.

12

Connectthewiresinthe4leadgraycable(pos.

1)tomainssupply(brownandbluewire)and
theterminalfortheemergencythermostat(black
andgraywire).Seewiringdiagramfordetailed
information.

13

Connectthewiresinthe2leadblacksensorcable
(OT)toterminalsonthemainprintcard(pos.2).
Seewiringdiagramfordetailedinformation.

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14

Putbackthecoverplate(pos.1)andtheplate
(pos.2)andfastenthemwiththeenclosedscrews

15

Turnthepowerbackonandstartthesoftwarecongurationinthedisplayaccordingtobelowprocedure
(chapter7.1).

Aftercompletedinstallationoftheelectricalre-heaterbatterytheunitlooksasdescribedinbelow
illustration(gure9).

Fig.9Installedelectricalre-heater

PositionDescription

1

Electricalre-heaterbatteryfrontplate

2Resetbuttonemergencythermostat

Note:

Afterthere-heaterbatteryhasbeeninstalledandconnectedproperly,applythe2typelabelsbelongingto
theelectricalre-heaterbatterynexttothelabelsoftheunit.Therstlabelisplacednexttotheunitlabel
situatedontheinnerlowerframeofthecasingbehindtheinspectionhatch.Thesecondlabelisplaced
nexttotheunitlabelsituatedontopoftheunitnexttotheductconnections.

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6Operation

6.1Controlpanel

Connecttheunitelectricallytothemainswiththeenclosedplugandcheckthatitstartsupcorrectly.

Thecontrolpanelisusedtomakethenecessaryadjustments.

Anexternalcontrolpanelcanbeconnectedonthetopoftheunit.

Theillustrationbelowshowsthecontrolpanelwithashortdescription.

Fig.10Controlpanel

PositionDescriptionExplanation

1Display

Showssymbols,menusandsettings

2

SELECTIONknob

Movethroughthemenulistsorchangesettingsand
valuesbyturningtheknobleftorright

3ENTERbuttonENTERmenuchoicesorsettingsbypressingthebutton

4RETURNbutton

StepRETURNinthemenulevelsandtoabortaninitiated
parameterchangeandrestoretheoriginalvalueby
pressingthebutton

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6.1.1Displaysymbols

Symbol

DescriptionExplanation

Temp

Illustratesthecurrentset-pointforsupplyairtemperature
(fromcompletelyemptytolledsymbol).

TurntheSELECTIONknobtochoosetemperature.

PressENTERtosavethesetting.

AirowIllustratesthecurrentairow.Theairowcanbeset

manuallyin5steps:Off,Low,Nom,HighandAuto.

TurntheSELECTIONknobtochooseairow.

PressENTERtosavethesetting.

A.Ventilationoff.

1

B.Lowventilation:Canbeusedwhenleavingthe

buildingforalongerperiod

C.Nominalventilation:Willgiverequiredairchange

undernormalconditions.

D.Maximumventilation:T oincreasetheairowif

necessary.

E.Autoventilation:Willregulateafterthepre-settingfor

thedemandcontrolsettings.

Service

PressENTERtoaccesstheservicemenu.

AlarmPressENTERtoaccessthealarmlist.

1.ThefancanbesettoOFFbyactivatingmanualfanstop.Seeservicemenudescriptionunderfunctions.

Important

Itisnotrecommendedtoactivatemanualfanstop(setfantoOFF)instandardhouseholds.Ifmanualfan
stopisactivated,theunitshouldbeprovidedwithdampersinexhaustandfreshairductstoavoidcold
draughtandriskofcondensationwhentheunithasbeenstopped.

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6.2Servicemenuoverview

Entertheservicemenubyselectingtheservicesymbolinthedisplay.

MenuLevel1MenuLevel2MenuLevel3Explanation

Service

Password

Password

PasswordXXXX
LockedYES/NO

Entertheservicelevel
bytyping1 1 11.Usethe
SELECTIONknobforeach
digitandconrmwiththe
ENTERbuttonaftereach
setdigit.NOwillunlockthe
systemandallowparameter
changes.

Service

Change
Password

Changepassword

ActualXXXX
NewXXXX
ConfirmXXXX

Setnewpasswordif
necessary.

Incasethenewpassword
wouldbeforgottenor
misplaced,it’sstillpossible
toentertheservicelevelby
writing8642.Thisoverrides
theearliersetpassword.

Service

Filterperiod

Filterperiod

Timeto
replace:
12month

ResetNO/YES

Showsselectedtimeinterval
betweenlterchange.

SetResetofthelterperiod
toYESaftercompletedlter
change.

Settimebetweenlter
changes.

Service

Time/Date

Time/Date

YY/MM/DD

Date:12/09/12

Time:10:00
Weekday:Sat

Showscurrentsetdateand
time.

SetCorrectdateandtime.

Service

Summer/Winter

Summer/Winter

Autotime
change?
YES/NO

Usethisdialogframe
tocongureautomatic
summertime/wintertime
change-over.Timewill
automaticallychange
betweensummertimeand
wintertimeaccordingto
Europeanstandard,based
onGreenwichtimezone.
DefaultvalueYES.

SetYESorNO

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MenuLevel1MenuLevel2MenuLevel3Explanation

Service

Ext/ForceRun

Ext/ForceRun

Minutes:0

Airflow:
Nominal

Usethisdialogueframeto
programextendedtimeyou
wanttheunittoworkunder
operationconditionsother
thandeterminedbytheweek
schedule.

Showssettimefor
extended/forcedrunning.

ShowsSetairow.

Setthetimethattheunitisto

runinextended/forcedmode.
Valuerange:0–240minutes.

Settheairowforthismode.
ChoosebetweenLow,Nom
orHigh.
Defaultvalue:Nom.

Service

Weekprogram

Weekprogram

Weekprogram

Weekprogram

Day:MON
Per1:07:0016:00
Per2:00:0000:00

Programhowyouwantthe
unittooperateaccording
totheweekschedule.It’s
possibletoset2periodsper
day.

Setweekdayandtime
intervalforthetimeyouwant
theunittobeinONmode.

Weekprogram

Airflow

Airflow

Onlevel:
low/nom/high/auto
Offlevel:
off/low/nom/high

Usethisdialogueframeto
determinetheONandOFF
functionforthefansinthe
weekschedule.

SetONlevel.
ChoosebetweenLow,Nom,
HighorAuto.
Defaultvalue:Nom

SetOFFlevel.
ChoosebetweenOFF ,Low,
NomorHigh.
Defaultvalue:Low.

Service

Airflowlog

Airflowlog

Level:1–5
Reset:NO/YES
SF:140/140
EF:140/140

Usethisdialogueframe
toseehowthefanshave
operatedduringthetime(h)
theyhavebeenactive.

Theairowareshownin5
differentlevels:

•Level1:0%

•Level2:1–29%

•Level3:30–44%

•Level4:45–59%

•Level5:60–100%

Choosebetweenthelevels
toseethetimeinhoursthe
fanshavebeenactiveinthe
differentlevels.

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MenuLevel1MenuLevel2MenuLevel3Explanation

ResetY esresetstheSFand
EFtimeintheleftcolumnfor
alllevels.Therightcolumn
continuestocountaheadand
cannotbereset.

Note:

Factoryreset(see

Functions–>Factory
reset)willnotaffectthis

function

Service

Functions

Functions

Heater/Cooler

Heater/Cooler

Preheater:YES/NO
Reheater:
None/Electrical/Wa­ter/Other

Cooler:None/Water

Usethisdialogueframeto
setuptheunitforheating
and/orcooling.

SetYEStoactivate
preheater.Defaultsettingis
NO.

SetRe-heatertoNone,
Electrical,WaterorOther.

Note:

IfreheaterissettoOther,
externalheaterisonly
controlledbyAO1(0–10V).
Overheatorfrostprotection
isnotavailable.

SetCoolertoNoneorWater.

Functions

Temp.Control

Temp.control

P-band:5°C
I-time:OFF
Output:0–100%

Usethisdialogframeto
adjustthesettingsofsupply
airtemperaturecontroller.

Settheproportionalband
(P-band)rangeforPI
controller.Defaultvalue5°C.

Setintegraltime(I-time)
rangeforPIcontroller.
DefaultvalueOff.

Showsoutputsignal
presentedforthesupply
airtemperaturecontroller.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Functions

Preheater

Pre-Heater

PreheaterSp:-30–
0°C)
P-band:5°C
I-time:OFF
Output:Auto(xx%)/
Man(Off/On)

Usethisdialogframeto
congurepre-heaterfunction.

Congurethesetpoint
setting.Defaultvalueis
dependantonsystemtype.
Incounterowunitssetpoint
isnotadjustable.

Settheproportionalband
(P-band)rangeforPI
controller.Defaultvalue5°C.

Setintegraltime(I-time)
rangeforPIcontroller.
DefaultvalueOff.

SetoutputtoAutoorMan.
DefaultsettingisAuto.Actual
controlleroutputsignalis
presentedinautomode.
SelectingMan,enablesthe
usertomanuallycontrol
outputofthepreheater
(On/Off).

Functions

Frostprotec­tion

Frostprotection

Alarmlimit:7°C

Showscurrentsetfrost
protectionalarmlimitin°Cfor
theinstalledwatercoil.

SetAlarmlimitin°C.
Defaultvalue:7°C.

Functions

Fancontrol

Fancontrol

Airflow
%

Only“%”isoption(default)

Fancontrol

Airflowunit

Airflowunit

%

Only“%”isoption(default)

Demandcontrol

DemandcontrolCO2/
RH
Setpoint0ppm/0%RH
P-Band100ppm/10%RH
I-TimeOFF

Itispossiblecontrolthe
indoorairqualityusing
RH(Relativehumidity)
orCO2(Carbondioxide)
sensor/sensors.Default
setpointsettingisOff.
(0%/0ppm).

Bothtypesshouldbeable
touseatthesametime,
meaning2PIcontrollers.
Whendemandcontrol
setpointiscongured,fans
settoautomodeandregulate
againstthesetpoint.The
fansymbolshouldhavethe
middleareaempty,andthe
outerandinnerlled.It
shouldnotbepossibleto
changeeither.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Fancontrol

Airflow

Airflow
%

Nom

High

Low

EF

50

100

25

SF

50

100

25

Usethisdialogueframeto
settheairowin%.The
airowcanbesetindividually
foreachfan

EF:Extractfan,
SF:Supplyfan

SettheairowforEFandSF

foreachstep(Low,Nom,and
High.

Functions

Manualfanstop

Manualfanstop

Allowmanualfan
stopY/N

Setifitshouldbepossible
toturnoffthefansintheunit
manuallyfromthecontrol
panel.

ChosebetweenYandN.

IfYisselectedthefanscan
beturnedoffbyturningthe
SELECTIONknobtoempty
fan

Functions

Analoginput

Analoginput

1:SS20.0
2:ETS23.0
3:Unused
4:Unused/OT/FPS

20.0
5:OS10.5
6:RH0%

Showsanalogueinputsfrom
activetemperaturesensors.

SS:Supplyairtempsensor.

ETS:Extractairtempsensor.

FPS:Frostprotectionsensor.

OS:Outdoorairtempsensor.

OT:Overheatprotection

sensor.

RH:Relativehumiditysensor .

Functions

Analogoutput

Analogoutput

A01auto/man/off
A02auto/man/off
A03auto/man/off

Showscurrentanalogue
outputsin0–10Vtohot/cold
wateractuatororelectrical
re-heaterandrotordrive/
bypassdamper.

SetAO1(Analogueoutput
tohotwateractuatoror
electricalre-heater)toauto,
manoroff.
Defaultvalue:auto.

SetAO2(Analogueoutputto
coldwateractuator)toauto,
manoroff.
Defaultvalue:auto.

SetAO3(Analogueoutputto
rotordriveorbypassdamper)
toautoorman.Defaultis
auto.Selectingmanenables
theusertomanuallycontrol
theactuator/damperwitha
0–10Vsignal.0Vcompletely
closedand10Vcompletely
openedactuator/bypass
damper.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Functions

Digitalinput

Digitalinput

DI1ON/OFF
DI2ON/OFF
DI3ON/OFF
DI4ON/OFF
DI5ON/OFF
DI6ON/OFF
DI7ON/OFF

Showscurrentstatusofthe
digitalinputsONorOFF

DI1:Fanconguration

DI2:Fanconguration

DI3:Fanconguration

DI4:Heaterdeactivated

DI5:Extended/forcedrunning

DI6forrotatingheat
exchanger:
Rotorsensor

DI6forcounterowheat
exchanger:
Bypassdamperlimitswitch

DI7:Home/leave

Functions

ConfigDI1–3

ConfigDI1–3DI:1–3

SF:highEF:high
Polarity:N.O/N.C
Delay:Off–240s

DI1–3arefreetousefor
anypurposeandhavea
differentpriority,DI1being
thehighest.DI1–3havea
higherprioritythanDI5.

Itispossibletoinvertinput
function.

SetDI1–3tobenormally
open(N.O)ornormally
closed(N.C).Defaultsetting
N.O.

Itisalsopossibletosethow
youwantthefanstoreactto
3differentdigitalinputswhen
theyareswitchedon.

Potentialfreeswitchesneed
tobeconnectedphysically
toterminalsonthemain
printcardtoobtainthe
differentfunctions.Seethe
wiringdiagramformore
information.

Setthesupplyairfan(SF)
andextractairfan(EF)
individuallytooff,low,nomor
highfordigitalinputs1–3

Setapredenedoffdelay
fortheinputsignal.System
willbeintheONstatefor
predenedperiodoraslong
asDIisactivatedandperiod
issetto0.Countingdown
forthepredenedperiod
startswhenDIfunctionis
deactivated.Defaultvalueis
0sec.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Functions

DI4–7

DI4–7

4Stopheat
5Extrun
6Damper/Rotor
7Home/Leave

DI4–7aredefaultsetfrom
factoryandcan’tbechanged
bytheuser .Belowfollows
ashortdescriptionofeach
function.

DI4:Makesitpossible
todisabletheelectrical
re-heater.Activated
inputmeansthatthe
electrical/otherre-heater
isdeactivated.

DI5:Activatethe
Extended/forcedrunning
function.Thefunction
overridescurrentsetairow
settingsandrunsaccording
tothesettingsinService->
Ext/Forcerun.Choose
betweenLow,Nomand
Highforthisfunction.The
inputiscalculatedbased
onthesignalsfroman
impulse-switch.Ifastandard
switchisused,thecountdown
ofthesettimestartswhen
theswitchisswitchedoff.

DI6forrotatingheat
exchanger:
Rotorsensor.Usedbythe
systemtomonitortherotor
rotation.

DI6forcounterowheat
exchanger:
Bypassdamperlimitswitch.
Usedbythesystemtodetect
thedamperposition.

DI7:Activateslowenergy
supportcontrol.Heat
exchangeroperatingby
theadjustedsetpointvalue
andaactivere-heaterhas
supportcontrolforthelowest
setpoint.(12°C)

Thefunctionisusedwhen
thebuildingisuninhabitedfor
alongerperiod.

Itisrecommendedtoconnect
DI7andDI1orDI3inparallel.
IfDI7isactivated,setthe
fansspeedtomin.Airow
settingsaredonewhen
conguringDI1/DI3.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Functions

Digitaloutput

Digitaloutput

1:SF67%
2:EF67%
3:RotON/OFF
4:ALARMY/N
5:DmpY/N
6:HeaterY/N

ShowsThecurrentstatus
ofdigitaloutputs1–6(the
settingsinthecolumntothe
leftareexamples).

1:SF67%:Currentset
speedofthesupplyairfan
(shownaspercentageofthe
maximumspeed).

2:EF67%Currentset
speedoftheextractairfan
(shownaspercentageofthe
maximumspeed).

3:Showsiftherotorisactive
ornot.Unusedforunitwith
counterowheatexchanger.

4:AlarmY/N:Indicatesifthe
sum.alarmisactiveornot

5:DmpOFF:
Outdoor/exhaustairdamper
isonoroff.

6:HeaterY/N:Indicatesifthe
electricalre-heaterisactive
ornot.

External
sensors

Externalsensors
CO2:0ppm—
RH:0%—

Lastvalidvalueispresented
fortheboundedsensors.

Highestactualsensor
signalpresentedvia
–/modbus/wireless.

Unboundsensorpresented
as–(none).

Modbussensorshaspriority
overwirelesssensors.

Functions

ExternalDI

ExternalDI

ActiveWireless:
DI1/..DI20
Assignto:
—/DI-5/DI7

ExternalDImenuonly
availableifoneorseveral
“Inputmodules”areboundto
thesystem.Activewireless
DI1-20isdependedonactual
nodefor“Inputmodule”.

Nodeshownin“Wireless”
menuwhichnode
representingDImodule
inputs.

Eg.
Node1type:DI.Active
wirelessDI1andDI2

Node2type:DI.Active
wirelessDI3andDI4

Node10type:DI.Active
wirelessDI19andDI20

ActivewirelessDI1-20are
availabletoassigntoDI1-5

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MenuLevel1MenuLevel2MenuLevel3Explanation

andDI7forthesysteminthe
airhandlingunit.

DI6isnotavailableas
selection,usedbythesystem
intheairhandlingunit.

UnsignedDIisshownas–
(none).

Toresetapreviously
assignedDI,select“–”
andconrmtheselection.

Functions

Wireless

ExternalDI

Note:1Type:None
State:NoNetwork
Data:0

Wirelesssystemstatus.

Node:Showsnumberof
boundwirelessmodule.

Type:None/UI:User
Interface(Controlpanel)/DI:
DigitalInputmodule/CO2:
CO2sensormodule/RH:RH
sensormodule.

State:NoNetwork:No
gatewayconnectedtothe
systemforairhandling
unit/Unbound:Nobonded
module/OK:Successful
bindingofmodule

Data:Theactualvalue
frommodule/Commfail:
Communicationfailure,se
manualforactualmodulefor
troubleshooting.

Toresetallboundnodes,
seeusermanualforGateway
Wireless.

Functions

Defrosting

WhenRHsensorisused:

Defrosting

ModeNormal/Hard/
Soft
AllowunbalanceYES
RHsensor:YES

WhenRHsensorisnot
used:

Defrosting

Mode1–5
AllowunbalanceYES
RHsensor:NO

Usethisdialogueframetoset
howaggressiveyouwantthe
defrostingfunctiontooperate
(seechapter7.2).

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MenuLevel1MenuLevel2MenuLevel3Explanation

Functions

Calibration

Calibration

Sensorvalue:0%
Adjustedvalue:0%
Confirm:YES/NO

Usethisdialogueframe
tocalibrateinternalRH
sensorforanydeviationsif
necessary.

Showscurrentinputsignal
valueofRHsensor.

SetadjustedvalueforRH
sensor.

Adjustedvaluemustbe
conrmed.

SetYEStoconrmchanges.

Functions

Modbus

Modbus

Settings

Settings

Address1
Baud19200
ParityNone

InformationaboutModbus
communicationandvariables
canbefoundintheModbus
usermanualforresidential
unitsintheonlinecatalogue
at

www.systemair.com.

Modbus

Gateway

Gateway

StateNot
present/...

Showscurrentstatusof
communication.

Functions

Factoryreset

Factoryreset

Reallyreset?
YES/NO

Usethisdialogueframeto
returntofactorysettings.

SetYESorNO

Note:

Thiswilleraseallyour
personalsettingsthathave
beendonefortheunit.

Service

Language

Language

Language
ENGLISH

Usethisdialogueframeto
returntoselectyourlocal
language.

SetLanguagebyturningthe
SELECTIONknob.

Service

Versions

VersionVTC300

Appl.
Boot

CD

xxx
xxx

EC

xxx
xxx

Showscurrentsoftware
versions

Note:

Thesoftwareversionsare
justanexampleandmay
differinaspecicunit.

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MenuLevel1MenuLevel2MenuLevel3Explanation

Firmware Service

Firmware

Unit
Gate­way
Update

CD

xxx
xxx

YES

EC

xxx
xxx

/NO

Usethisdialogueframeto
updatermware.

SetYESorNO.

Showscurrentversionofthe

unitandZ-waveGateway.

Service

Alarms

Alarms

Fan
Frost
Bypass
Rot
PbFail
Temp
Filter
LowSS
Defrost
RH

Showsthealarmsthathave
beentriggered.Seealarm
list(chapter9.3.1)

6.3Settingthetemperature

Thesupplyairtemperatureissetmanuallyinstepsof1Kinthemainmenudisplaybychoosingthe
temperaturesymbol.

Ifanelectricalre-heaterisinstalledthetemperaturesetpointsare:
12-22°C.Forinstalledwaterre-heaterthesetpointsare:12-40°C.

Ifthere-heaterisdeactivated,thetemperaturestepsare:
15-19°C.Defaultvalue:15.0°C.

Eachtemperaturestepisillustratedbyincreasingthellingofthetemperaturesymbolandthetemperature
isshowninthedisplay

Anunlledtemperaturesymbolwillactivatemanualsummermode.Seechapter6.5

6.4Manualsettingofairow

Itispossible,atanytime,tomanuallysettheairowinthemainmenudisplay.Bychoosingthefansymbol
andconrming,itispossibletoincreaseordecreasetheairowin5steps:Off,Low,Nom,HighandAuto.

Bydoingso,youoverridetheprogrammedweekschedulefortheunituntiltheendofthepresenttime
periodintheweekprogram(chapter7.3).

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Warning

Itisnotrecommendedtoactivatemanualfanstop(setfantoOFF)instandardhouseholds.Ifmanual
fanstopisactivated,theunitshouldbeprovidedwithdampersinexhaustandfreshairductstoavoid
colddraughtandriskofcondensationwhentheunithasbeenstopped.

ThefancanbesettoOFFbyactivatingmanualfanstop.SeetheInstallationandServicemanual,
chapterServicemenuoverview:Manualfanstop.

6.5Manualandautomaticsummermode

Manualsummermodeoccursifnotemperaturestepisselected.Thetemperaturesymbolonthemain
menuisthencompletelyempty .

Iftheelectricalre-heaterisactivated,itwillswitchoffduringmanualsummermode.Manualsummer
modegoesautomaticallytostep1(setpoint12°C)aftertwominutesifthesupplyairtemperatureis
+5°Corbelow.

Ifawaterheaterbatteryisinstalledandactivated,themanualsummermodegoesautomaticallytostep1
(setpoint12°C)iftheoutdoorairorsupplyairtemperatureis+5°Corbelow.

Theunitwillautomaticallyalternatebetweenwinteroperationwithheatrecoveryandsummeroperation
withoutheatrecovery .

6.6Coolrecovery

Iftheoutdoorairiswarmerthantheextractairandthesupplyairisabovethesetpoint,coolrecovery
occurs.Thisconditionblockstheheatregulationprocess.

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7Commissioning

7.1Startupwizard

TheStartupWizardisastep-by-stepcongurationtoolthatstartsautomaticallywhentheSAVEVTC
300isstartedforthersttimeorwhen:

•afactoryresetisperformed

•anewprintcardisinstalled(sparepart)
Inthiscasetheunittypemustbeentered(SAVEVTC300)

TheairowintheStartupwizardcanbesetbypercentage(Airflow%)withtheFancontrol.

7.1.1Procedure

1.TurntheSELECTIONknobtochooselanguageandpressENTER

Languages
LanguageENGLISH

2.Chooseunittype,thischoiceisonlypresentifanewprintcardis
installed(sparepart)orwhenafactoryresetisperformed.

Type
SAVEVTC300

3.Setdateandtime

Time/DateYY/MM/DD

Date:12/09/12

Time:10:00
Weekday:Sat

4.Selectheater:None/Electrical/Water/Other

Note:

Thischoiceisavailableonlyafterafactoryreset,seechapter7.1.2,or
whenanewprintcardisinstalled.

Heater

Reheater:None/Electri­cal/Water/Other

Airflow
%

EF

SF

Nom

5050

High100100

5.Fancontrol.

TurntheSELECTIONknobtoselectpercentage(%)fancontroland
pressENTER.

HereitispossibletochangetheNominal/High/LowairowontheExtract
airfan(EF)andSupplyairfan(SF).Airowin%.

Whensettingsaredone,pressENTER.

Low

2525

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7.1.2PerformFactoryreset

Howtoperformafactoryresetifnecessary:

1.Entertheservicemenubyselectingtheservice
symbolinthedisplayandpressENTER.

2.Gotopasswordandenterthepassword,
default11 1 1

UsetheSELECTIONknobforeachdigitand
conrmwiththeENTERbuttonaftereachsetdigit
andchooseNOforthesystemnotbelocked.

Password

PasswordXXXX
LockedYES/NO

3.GotoFunctionsandselectFactoryReset

Functions

Factoryreset

4.TurntheSELECTIONknobsoYESisshown
andpressENTER.

Factoryreset

Reallyreset?YES/NO

5.ACCEPTEDisshowninthedisplaywindow

ACCEPTED

6.TheStartupWizardstartsafterapproximately
10seconds

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7.2Defrostsettings

Theunitisequippedwithanautomaticdefrostfunctionthatisactivatedwhenthereisriskoficinginthe
areaaroundtheheatexchanger.Thesettingshownintable3determineshowaggressivethedefrosting
willbe.DefaultfactorydefrostmodesettingisNormal.

Ifrelativehumiditysensoriscongurednottobeusedfordefrosting,thendefrostinglevelshavetobe
selectedmanuallybytheuser ,inthatcasedefrostingwillbecontrolledonlybytheoutdoorairtemperature
sensor.Thesettingsareshownintable4.

Note:

Theheatexchangershouldwithstandlowoutdoortemperatures,butinthosecaseswhereicingcan
occurpleasebeawareofthatthedefrostsettingwillgenerateanunderpressureinthebuilding.Using
areplace,beawarethatthereisapossibleriskofsmokebeingextractedintothelivingareasdueto
underpressureifdefrostingisactivated.

Table3:Defrostmodes

Defrostmode

Description

SoftDryareas,suchaswarehousebuildingswithfewpeopleorindustrial

buildingsthatdon’tusewaterintheirproductionprocess.

NormalApartmentsorhouseswithnormalhumidity

1

HardBuildingswithveryhighhumiditylevel.

1.Innewlyconstructedhousesitmightbenecessarywithahigherdefrostlevelduringtherstwinterperiod.

Table4:Defrostlevels

Defrost
level

Levelofhumidity

Relativehumidity
indoors

1

Description

0

<20%Defrostingisturnedoff.Areaswhererelative

humidityisverylow.

Note:

Thissettingisnotvalidforunitsequippedwith
counterowheatexchangerswhenRHsensor
issetnottobeusedfordefrosting.

1Min

20%-29%

Dryareas,suchaswarehousebuildingswith
fewpeopleorindustrialbuildingsthatdon’tuse
waterintheirproductionprocess.

2Low

30%-40%Ofcebuildings

3Medium

41%-60%

Apartmentsorhouseswithnormalhumidity

2

4High

61%-80%

Apartmentsorhouseswithhighhumidity

5

Extremelyhigh

>80%

Buildingswithveryhighhumiditylevel.

1.Approximatevaluesofrelativehumidityintheextractairatcoldoutdoortemperatures.

2.Innewlyconstructedhousesitmightbenecessarywithahigherdefrostlevelduringtherstwinterperiod.

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7.2.1Settingthedefrostlevel

1.Gototheservicemenubyusingthe
SELECTIONknob.

2.Entertheservicelevelbytypingthepassword,
default1111.UsetheSELECTIONknobforeach
digitandconrmwiththeENTERbuttonaftereach
setdigitandchoose"NO"forthesystemnotbe
locked.

Password

PasswordXXXX
LockedYES/NO

3.Goto:Functions

Choose:Defrosting

Functions

Defrosting

4.SetthemodeWhenRHsensorisconguredtobeusedfor
defrostingfunction:

Defrosting

ModeSoft/Normal/Hard
RHsensor:YES

WhenRHsensorisnotconguredtobeused
fordefrostingfunction:

Defrosting

Mode1–5
RHsensor:NO

5.Selectifunbalancedairowsareallowedinthe

buildingduringthedefrostcycle.Choosebetween
YESandNO.DefaultisYES.

AllowunbalanceYES/NO

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7.3ProgrammingtheWeekschedule

Settheweekscheduleaccordingtobelowprocedure:

1.Gototheservicemenubyusingthe
SELECTIONknob.

2.Entertheservicelevelbytypingthepassword,
default1111.UsetheSELECTIONknobforeach
digitandconrmwiththeENTERbuttonaftereach
setdigitandchoose"NO"forthesystemnotbe
locked.

Password

PasswordXXXX
LockedYES/NO

3.Goto:Weekprogram

Service

Weekprogram

4.ChooseWeekprogramagain.

Weekprogram

Airflow

5.Setweekdayandtimeyouwanttheunitto
beinONlevel.Twoperiodsperdaycanbe
programmed.Therestofthetimetheunitwillbein
OFFlevel.

Weekprogram

Day:MON
Per1:07:0016:00
Per2:00:0000:00

6.Gobacktothepreviousdialogueframewiththe
RETURNbuttonandgodowntoAirflow.

Weekprogram

Airflow

7.Setwhichairowthefanissupposedtobe
runningintheONlevel,choosebetweenLow,
Nom,HighorAuto.

Setwhichairowthefanissupposedtoberunning
intheOFFlevel,choosebetweenOFF,Low,Nom
orHigh.

Note:

Ifanelectricalre-heaterbatteryisinstalledand
activeandtheunitisshutdownfromthecontrol
panel,forexamplebychoosingOFF.Whenthe
unitisinOFFlevelintheweekprogram,thefans
willcontinuetorunfor3minutes,topreventthe
heaterfromtriggeringtheoverheatprotection
sensor,beforetheystop.

Airflow

Onlevel:low/nom/high/auto
Offlevel:off/low/nom/high

8.StepbackwiththeRETURNbuttonuntilyou
reachthemainmenudisplay

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7.4Extrafunctions

Theunitisequippedwithanumberofextraon/offfunctionswhichcanbeactivatedfromexternalon/off
switchesthatcanbeconnectedtothedigitalinputsonthemainprintcard(seewiringdiagram).

Thefollowingpossibilitiesareavailable:

•Digitalinputs1–3:Arefreetobeusedforanypurpose,theyalsohaveadifferentpriority ,DI1being

thehighestandDI3thelowest.DI1–3haveahigherprioritythanDI5.Byconnectingon/offswitches
totheseinputsit’spossibletochoose4(Off/Low/Normal/High)individualairowsettingsinthecontrol
paneldependingonatemporaryneedforthebuilding(forexampleloweringtheextractairairow
whenanopenreplaceisused).Seechapter6.2.

DI3ispreparedandalreadyconnectedinternallyforeasyaccessontheunit.Seechapter5.3.2.3.

Inunitswithabuilt-inbypassforcookerhoodconnection,DI3canbeusedtocontrolexternalcooker
hood.IthastobeconguredasSF=HighandEF=High.

•Digitalinput4:Makesitpossibletodisabletheelectrical/otherre-heater

Activatedinputmeansthattheelectrical/otherre-heaterisdisabled.

•Digitalinput5:ActivatetheExtended/forcedrunningfunctionwithaimpulseswitch.Thefunction

overridescurrentairowsettingsandrunsinforcedmodeaccordingtothesettingsinService->
Ext/Forcerun.ChoosebetweenLow ,NomandHighforthisfunction.

Theinputiscalculatedbasedonthesignalsfromanimpulse-switch.Ifastandardswitchisused,the
countdownofthesettimestartswhentheswitchisswitchedoff.

•Digitalinput6:Controlfortheexchanger,usedbythesystem

•Digitalinput7:Home/leave,switchingonthisactivateslowenergysupportcontrol.Theheat

exchangerisalwaysoperatingaccordingtothesetpointvalue.Isthereare-heateractivateditwill
operateaccordingtothelowestsetpointvalue(12°C).Thefunctionisusedwhenthebuildingis
uninhabitedforalongerperiod.

ItisrecommendedtoconnecteitherofDI1,DI2orDI3inparallelwithDI7.IfDI7isactivated,setthe
fansspeedtomin.AirowsettingsaredonewhenconguringDI1,DI2orDI3.

Seemenuoptionsin“ServicemenuOverview”(chapter6.2).

8Beforestartingthesystem

Whentheinstallationisnished,checkthat:

•Theunitisinstalledinaccordancewiththeinstructions

•Theunitiscorrectlywired

•Outdoorandexhaustairdampersandsilencersareinstalledandthattheductsystemiscorrectly
connectedtotheunit

•Allductsaresufcientlyinsulatedandinstalledaccordingtolocalrulesandregulations

•Outdoorairintakeispositionedwithsufcientdistancetopollutionsources(kitchenventilatorexhaust,
centralvacuumsystemexhaustorsimilar)

•Allexternalequipmentareconnected

•Theunitiscorrectlyconguredandcommissioned

•Theweekscheduleandairowsettingsarecorrectlyprogrammed.

9Service

Note:

Questionsregardingtheunitandtheinstallationareansweredbyyourinstallerorplaceof
purchase!

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9.1Warnings

Danger

•Makesurethatthemainssupplytotheunitisdisconnectedbeforeperforminganymaintenanceor
electricalwork!

•Allelectricalconnectionsandmaintenanceworkmustbecarriedoutbyanauthorizedinstallerand
inaccordancewithlocalrulesandregulations.

Warning

•Thesystemshouldoperatecontinuously,andonlybestoppedformaintenance/service

•Althoughthemainssupplytotheunithasbeendisconnectedthereisstillriskforinjuryduetorotating
partsthathavenotcometoacompletestandstill

•Bewareofsharpedgesduringmaintenance.Useprotectivegloves

•Makesurethatltersaremountedintheirplacebeforerunningthesystem

•Thisproductmustonlybeoperatedbyapersonwhichhassuitableknowledgeoreducationwithin
thiseldorcarriedoutwiththesupervisionofasuitablyqualiedperson.

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9.2InternalComponents

Fig.11Components

PositionDescription

1Fan,supplyair

2Fan,extractair

3Filter,outdoorair

4Filter,extractair

5

Defrostdamper

1

6

Motor,defrostdamper

7

Coverplate,defrostdamper

8Heatexchanger

9

Condensationtray

10

Condensationdrain

12

Coverplate,electricalconnectionbox

13Printcardwithterminals

14Temperaturesensor,supplyair

15Temperaturesensor,outdoorair

16Temperaturesensor,extractair

17

Fastcouplingsforsupply-andextractairfan

1.Thedampermaynotbeturnedbyhand!

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9.2.1DescriptionofComponents

9.2.1.1Fans

Thefans(pos.1and2gure1 1)haveexternalrotormotorsofECtypewhichcanbesteplesslycontrolled
individually20–100%.Themotorbearingsarelifetimelubricatedandmaintenancefree.Itispossibleto
removethefansforcleaning,see“UserManual”formoreinformation.

9.2.1.2Filters

TheltersareoflterqualityG4forboththesupplyairandextractairlter.Theltersneedtobereplaced
whenpolluted.Newsetsoflterscanbeacquiredfromyourinstallerorwholesaler.

9.2.1.3Defrostdamper

Thebuiltinbypassdamper(pos.5gure1 1)isinvolvedindefrosting,coolrecovery ,andsupplyair
temperatureregulationoftheunit.Thedampermotoriscontrolledbyananalogue0–10Vsignal.

Atestsequencewhichopensandclosesthedamperwilloccuronceevery24hours.Amicroswitch
detectsifthebypassisabletoclosecompletely.IfasignalfromDI6isnotdetectedforoneminuteafter
thefunctiontesthasbeeninitiated,thenthewarning“DAMPERWARNING”appearsinthecontrolpanel.

9.2.1.4Heatexchanger

SAVEVTC300isequippedwithahighlyefcient,counterowplateheatexchanger.Requiredsupplyair
temperatureisthereforenormallymaintainedwithoutaddingadditionalheat.

Theheatexchangerisremovableforcleaningandmaintenance,see“UserManual”formoreinformation.

9.2.1.5Condensationtrayanddrainage

Dependingontherelativehumidityintheextractair,condensationmayoccuronthecoldsurfacesofthe
heatexchanger .Thecondensatewaterisgatheredinthecondensationtray(pos.9gure11)inthebottom
oftheunitandisledoutthroughthedrainage(pos.10gure11)whicharesituatedoneachsideofthe
heatexchanger.Thedrainageoutletsaresize½″withouterthreadedtubeconnections(chapter5.3.1).

9.2.1.6Printcard

Themainprintcard(pos.13gure11)controlsthefunctionsandsettemperaturesoftheunit.Itispossible
toconnectexternalaccessoriestoterminalsintheprintcard.Seewiringdiagramformoreinformation.

9.2.1.7Temperaturesensors

Threetemperaturesensors(NTC,10kΩ)areincludedintheunitfromfactory:

•Supplyairsensor(pos.14gure1 1)

•Outdoorairsensor(pos.15gure1 1)

•Extractairsensor(pos.16gure1 1).

Thesensorsarewiredtothemainprintcard.Seewiringdiagramformoreinformation.

9.2.1.8Humiditysensor

Relativehumiditysensor(RHS)isincludedintheunitfromfactoryandpositionedintheextractairchamber.

Thesensorisconnectedtothemainprintcard.Seewiringdiagramformoreinformation.

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9.2.1.9ElectricalRe-heaterbattery

Theelectricalre-heaterisoptional,i.e.notincludedfromfactoryinastandardunit,andmustbeconnected
andactivatedinthecontrolpanel.There-heaterisactivatedbyarelayandswitchesonifthesupplyair
temperatureislowerthanthesetpointandswitchesoffifoneormoreofthefollowingconditionsaremet:

1.Ifthesupplyairtemperatureisabovethesetpoint

2.Iftheoverheatprotectionisactivatedorthesensorismalfunctioning

3.Iftheemergencythermostatistriggeredorbroken

4.Ifthesupplyairsensorisinerrorstate

5.Ifthesupplyairfanisnotrunning

6.Iftheheaterissettonotactiveinthemenu.

7.Ifre-heaterisdisabledbydigitalinput4(DI4).

9.2.1.10WaterRe-heaterbattery

Awaterre-heaterbattery(optional),whichcanbeacquiredasanaccessory ,canbecontrolledbythe
analogoutputWH(0-10VDC).ThewaterheaterusesAI4forfrostprotection(OT,“Overheatprotection”,
changestoFPS,Frostprotectioninthemenu).Thefrostprotectionsensorshouldthenbeastrapon
surfacesensorsituatedonthereturnwatertube.Thesupplyairsensor(SS)atAI1mustbereplacedwith
aductsensorwhichcanbeacquiredasanaccessory.Seewiringdiagramformoreinformation.

Onlyelectricalorwaterre-heaterisallowed,i.e.ifawaterre-heaterisselected,theelectricalre-heateris
deactivatedandviceversa.

Note:

Ifawaterre-heaterbatteryisinstalledwestronglyrecommendyoutoalsoinstallanoutdoorairdamper
withaspringreturnactuator.

9.2.1.11WaterCooler

Awatercooler(optional)canbeacquiredasanaccessoryandbecontrolledbytheunit.Ifawatercooler
isinstalledthesupplyairsensor(SS)atAI1mustbereplacedwithaductsensorwhichcanbeacquired
asanaccessory.Seewiringdiagramformoreinformation.

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9.3Troubleshooting

Ifproblemsshouldoccur,pleasechecktheitemsbelowbeforecallingyourservicerepresentative.

Malfunction

Action

Fansdonotstart

1.Checkthedisplayforalarms.

2.Checkthatallfusesandfastcouplingsareconnected(mainssupplyandfast
couplingsforsupplyandextractairfans,pos.16gure11).

3.CheckthattheweekprogramisinONmode.Theweekprogrammightbein
OFFmodewiththeairowsettoOFF(chapter7.3).

4.Checkifoneofthedigitalinputs1–3(DI1–3)isactiveandsettooff.This
wouldforceoneorbothfanstostopdependingonthesetup(chapter7.4).

Reducedairow

1.Checkthedisplayforalarms.

2.Theunitcouldbeindefrostmode.Thisreducesthefanspeedandinsome
casesshutsdownthesupplyairfancompletelyduringthedefrostingcycle.
Thefansgobacktonormalafternisheddefrosting.ShownasDefrosting
inthedisplay

3.Checksettingofairowinthecontrolpanel(chapter6.4).

4.Checkweekprogram(chapter7.3).

5.Checkifoneofthedigitalinputs1–3(DI1–3)isactiveandsettooff.This
wouldforceoneorbothfanstostopdependingonthesetup(chapter7.4).

6.Checklters.Changeofltersrequired?

7.Checkdiffusers/louvres.Cleaningofdiffusers/louvresrequired?

8.Checkfansandheatexchangeblock.Cleaningrequired?

9.Checkifthebuildingsairintakeandroofunit(exhaust)havebeenclogged.

10.Checkvisibleductrunsfordamageand/orbuildupofdust/pollution.

11.Checkdiffuser/louvreopenings.

Theunitcannotbe

controlled(control

functionsarestuck)

1.Resetcontrolfunctionsbypullingouttheplugfor10seconds.

2.Checkthemodularcontactconnectionbetweenthecontrolpanelandthe
mainprintcard.

Lowsupplyair

temperature

1.Checkthedisplayforalarms.

2.Checksetsupplyairtemperatureinthecontrolpanel.

3.Checktheanalogueinputsintheservicemenutoverifythatthetempsensors
areok(chapter6.2).GotoFunctions>Analogueinputandverifythe
temperaturereadingsfromthetempsensors.

4.Incaseofinstalledelectrical/otherre-heaterbattery:Checkiftheoverheat
protectionthermostatisstillalert.Ifnecessary,resetbypressingtheredbutton
onthefrontplateoftheelectricalre-heater(pos.2,gure9).

5.Checkifdigitalinput4(DI4)issettooff.Thiswouldforcetheelectrical
re-heaterbatterytobeswitchedoff(chapter7.4)

6.Checkiftheextractltermustbechanged.

7.Checkiftheunithasare-heaterbatteryconnected.Atverycoldoutdoor
conditionsanelectricalorwaterheatingbatterymightbenecessary.A
re-heaterbatterycanbeacquiredasanaccessory.

Noise/vibrations

1.Cleanfanimpellers.

2.Checkthatthescrewsholdingthefansaretightened.

3.Checkthattheantivibrationlistsarettedtothemountingbracketandtothe
backoftheunit.

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9.3.1Alarmlist

Erroriswarnedwithtextandwarningtriangleinthedisplay .Turntheselectionknobtothewarning
triangleandpress2xconrm

AlarmExplanationResult

Fan

Indicateserroroneithersupplyorextract
airfan.

Thealarmisdisplayedinthecontrolpanel

Mayresultintriggeredoverheatprotection
ifanelectricalre-heaterbatteryisinstalled
andactivewhenthemalfunctionoccurs.

EMT/Frost

Indicatestriggeredemergencythermostat
(incaseofinstalledelectricre-heater
battery)orfrostprotection(incaseof
installedwaterre-heaterorcoolingbattery).

Atriggeredfrostprotectionalarmresults
inthefollowing:

•Bothfansstop

•Outdoorandexhaustairdampersclose

•Watervalveopenscompletely(10V
signalgoesouttotheactuator)

Theunitwillrestartoncethewater
temperaturereaches+5Koversetfrost
protectiontemperature.

Atriggeredemergencythermostatalarm
givesanalarminthecontrolpanel.

Resetbypushingtheredbuttononthe
frontoftheheater.

Bypass

Indicatesmalfunctioninbypassdamper

Thealarmisdisplayedinthecontrolpanel.

Disconnectthemainssupplyfor10sec
toresetcontrolfunction.Powerupthe
unit,anautomaticbypassdampertest
willbeperformed.Ifthealarmoccurs
againafterapproximate2min.,contact
yourinstallationcompanyoraplaceof
purchase.

PbFail

Errorinconnectionwithrelaycard
forelectricalre-heaterorre-heater
disconnected

Thealarmisdisplayedinthecontrolpanel.

Theelectricalre-heaterwillnotbe
activated.

Temp

Malfunctioninoneormoreofthe
temperaturesensors.

Thealarmisdisplayedinthecontrolpanel.

Checkanalogueinputstoverifywhich
sensorismalfunctioning.

Filter

Timeforlterchange.

Thealarmisdisplayedinthecontrolpanel.

Changelteraccordingtoinstructionsin
the“UserManual”.

LowSS

IndicateslowsupplyairtemperatureThealarmisdisplayedinthecontrolpanel.

Ifwaterreheaterisconguredandfrost
protectionhavefailed,thenanextra
securityfunctionistriggeredwhensupply
airtemperatureislowerthan5°Cand
outdoorairtemperatureisbelow0°C.

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AlarmExplanationResult

Defrost

Indicatesunacceptablepre-heater
temperature.“Stopdefrosting”levelisnot
allowed.

Thealarmisdisplayedinthecontrolpanel.

Pre-heateristriggeredormalfunctionof
pre-heaterhaveoccurred.

RH

Indicatesmalfunctionofinternalrelative
humiditysensor.

Thealarmisdisplayedinthecontrolpanel.

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lastpage

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