Danfoss Termix VMTD Compact 20, VMTD-C20 Installation Manual

InstallationGuide

TermixVMTDCompact20

1.0TableofContents

1.0TableofContents.............................................1

........................................................................2

2.0VMTD-C20Functionaldescription.....................3

3.0Safetynotes.....................................................4

SafetyNotes—general...........................................4

4.0Mounting........................................................5

4.1Mounting...........................................................5

4.2Start-up..............................................................7

4.3Electricalconnections.............................................8

5.0Design.............................................................9

5.1Design...............................................................9

5.2Schematicdiagram................................................10

6.0Controls..........................................................12

6.1Heatingcircuit......................................................12

6.2DHWtemperaturecontrol........................................14

6.3Other.................................................................15

6.4Maintenance........................................................17

7.0Troubleshooting..............................................18

7.1Troubleshootingingeneral......................................18

7.2TroubleshootingDHW............................................18

7.3TroubleshootingHE...............................................19

7.4Disposal.............................................................20

8.0Declaration......................................................23

8.1Declarationofconformity........................................23

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2.0VMTD-C20Functionaldescription

Districtheatingsubstationfordirectheatingand
instantaneousdomestichotwaterwiththermostaticor
electroniccontrols.Designedforwall-mounting.

Application

TheTermixVMTDCompact20substationisacompletesolution
withbuilt-inwaterheaterandheatingcircuitwithdifferential
pressurecontrols.Thesubstationisapplicableformulti-family
housesandapartmentbuildings.

Districtheating(DH)

Thedistrictheatingcircuitisprefabricatedwithadifferential
pressurecontrolleraswellasthermometersandballvalves.
Furthermorethesubstationisdeliveredwithamixingloop
includingpump,controlsandnon-returnvalve.

Heating(HE)

Theheatingcircuitisdesignedfordirectconnection.The
differentialpressurecontrollersetstheoptimumoperation
conditionsforradiatorthermostatsinordertoenableindividual
temperaturecontrolineachroom.Themixingloopcreatesa
suitabletemperaturelevelfortheheatingsystem.

Domestichotwater(DHW)

Thedomestichotwaterispreparedintheplateheatexchanger
andthetemperatureisregulatedwithathermostaticor
electro-niccontroller.TheefcientheatexchangerforDHW
offersexceptionallygoodheatextractionwithhighoutput.No
readjustmentoftheDHWtemperatureisrequiredafterinstallation
andinitialsettingofthecontrols.Thethermostaticcontrol
valveautomaticallyretainsthecomforttemperatureofthehot
water,evenwhentheheatingsystemisinreducedoperation
duringsummerorifthedistrictheatingplantchangesope-rating
parametersbetweensummerandwinter .Thiseitherbylowering
orincreasingtheowtemperatureofthedistrictheatingwater
and/ortheoperatingpressureinthenetwork.

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3.0Safetynotes

Thefollowinginstructionsrefertothestandarddesignof
substation.Specialversionsofsubstationsareavailableon
request.

Thisoperatingmanualshouldbereadcarefullybeforeinstallation
andstart-upofthesubstation.Themanufactureracceptsno
liabilityfordamageorfaultsthatresultfromnon-compliancewith
theoperatingmanual.Pleasereadandfollowalltheinstructions
carefullytopreventaccidents,injuryanddamagetoproperty.
Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.
Pleasecomplywiththeinstructionsissuedbythesystem
manufacturerorsystemoperator.

Corrosionprotection

Allpipesandcomponentsaremadeofstainlesssteelandbrass.
Themaximumchloridecompoundsoftheowmediumshouldnot
behigherthan150mg/l.
Theriskofequipmentcorrosionincreasesconsiderablyifthe
recommendedlevelofpermissiblechloridecompoundsis
exceeded.

Energysource

Thesubstationisdesignedfordistrictheatingastheprimary
sourceofenergy.However,alsootherenergysourcescanbeused
wheretheoperatingconditionsallowitandalwaysarecomparable
todistrictheating.

Application

Thesubstationisdesignedtobeconnectedtothehouse
installationinafrost-freeroom,wherethetemperaturedoesnot
exceed50°Candthehumiditydoesnotexceed60%.Donotcover
orwallupthesubstationorinanyotherwayblocktheentrance
tothestation.

Choiceofmaterial

Choiceofmaterialsalwaysincompliancewithlocallegislation.

Safetyvalve(s)

Werecommendmountingofsafetyvalve(s),however,alwaysin
compliancewithlocalregulations.

Connection

Thesubstationmustbeequippedwithfeaturesthatensurethat
thesubstationcanbeseparatedfromallenergysources(also
powersupply).

Emergency

Incaseofdangeroraccidents-re,leaksorotherdangerous
circumstances-interruptallenergysourcestothestationif
possible,andseekexperthelp.
Incaseofdiscolouredorbad-smellingdomestichotwater,closeall
shut-offvalvesonthesubstation,informtheoperatingpersonnel
andcallforexperthelpimmediately.

Storage

Anystorageofthesubstationwhichmaybenecessarypriorto
installationshouldbeinconditionswhicharedryandheated.

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.

Pleaseobserveinstructionscarefully

Toavoidinjurytopersonsanddamagetothedevice,itisabsolutely
necessarytoreadandobservetheseinstructionscarefully.

Warningofhighpressureandtemperature

Beawareoftheinstallation’ spermissiblesystempressureand
temperature.

Themaximumtemperatureoftheowmediuminthesubstationis
120°C.

Themaximumoperatingpressureofthesubstationis10bar.PN16
versionsareavailableonenquiry.

Theriskofpersonsbeinginjuredandequipmentdamagedincreases
considerablyiftherecommendedpermissibleoperatingparameters
areexceeded.

Thesubstationinstallationmustbeequippedwithsafetyvalves,
however,alwaysinaccordancewithlocalregulations.

Warningofhotsurface

Thesubstationhasgothotsurfaces,whichcancauseskinburns.
Pleasebeextremelycautiousincloseproximitytothesubstation.

Powerfailurecanresultinthemotorvalvesbeingstuckinopen
position.Thesurfacesofthesubstationcangethot,whichcancause
skinburns.Theballvalvesondistrictheatingsupplyandreturnshould
beclosed.

Warningoftransportdamage

Beforesubstationinstallation,pleasemakesurethatthesubstation
hasnotbeendamagedduringtransport.

IMPORTANT-Tighteningofconnections

Duetovibrationsduringtransportallangeconnections,screwjoints
andelectricalclampandscrewconnectionsmustbecheckedand
tightenedbeforewaterisaddedtothesystem.Afterwaterhasbeen
addedtothesystemandthesystemhasbeenputintooperation,
re-tightenALLconnections.

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4.0Mounting

4.1Mounting

Installationmustbeincompliancewithlocalstandardsand
regulations.
Districtheating(DH)-Inthefollowingsections,DHreferstothe
heatsourcewhichsuppliesthesubstations.Avarietyofenergy
sources,suchasoil,gasorsolarpower,couldbeusedasthe
primarysupplytoDanfosssubstations.Forthesakeofsimplicity,
DHcanbetakentomeantheprimarysupply.

Connections:

1.Districtheating(DH)supply

2.Districtheating(DH)return

3.Heating(HE)supply

4.Heating(HE)return

5.Domestichotwater(DHW)

6.Domesticcoldwater(DCW)

7.Hotwatercirculation(HWC)

Connectionsizes:

DH+HE:

G1”(int.thread)

DCW+DHW:

G1”(int.thread)

HWC:

G¾”(int.thread)

Dimensions(mm):

Withoutcover:
H815xW505xD300
Withcover:
H815xW540xD360

Weight(approx.):30–40kg

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.

Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.

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4.1.1Installation

Mounting:

Adequatespace

Pleaseallowadequatespacearoundthesubstationformounting
andmaintenancepurposes.

Orientation

Thestationmustbemountedsothatcomponents,keyholes
andlabelsareplacedcorrectly.Ifyouwishtomountthestation
differentlypleasecontactyoursupplier.

Drillings

Wheresubstationsaretobewall-mounted,drillingsareprovided
inthebackmountingplate.Floormountedunitshavesupport.

Labelling

Eachconnectiononthesubstationislabelled.

Beforeinstallation:

Cleanandrinse

Priortoinstallation,allsubstationpipesandconnectionsshouldbe
cleanedandrinsed.

Thightening

Duetovibrationduringtransport,allsubstationconnectionsmust
becheckedandtightenedbeforeinstallation.

Unusedconnections

Unusedconnectionsandshut-offvalvesmustbesealedwitha
plug.Shouldtheplugsrequireremoval,thismustonlybedoneby
anauthorizedservicetechnician.

Installation:

Strainer

Ifastrainerissuppliedwiththestationitmustbettedaccording
toschematicdiagram.Pleasenotethatthestrainermaybe
suppliedloose.

Connections

Internalinstallationanddistrictheatingpipesconnectionsmustbe
madeusingthreaded,angedorweldedconnections.

Keyholeformounting.

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4.2Start-up

Start-up,Heatingwithmixingloop

Start-up:

1:Pumpspeed

Setthepumptohighestspeedbeforestart-up.

2:Startpump

Startthepumpandheatthroughthesystem.

3:Openshut-offvalves

Theshut-offvalvesshouldthenbeopenedandtheunitobserved
asitentersservice.Visualcheckingshouldconrmtemperatures,
pressures,acceptablethermalexpansionandabsenceofleakage.
Ifthesystemoperatesinaccordancewithdesign,itcanbeput
toregularuse.

4:Ventsystem

Switchoffthepumpandventtheinstallationaftertheradiators
havebeenwarmedup.

5:Adjustpumpspeed

Setthepumptothelowestspeedconsistentwithcomfortand
electricityconsumption.
Normallythechange-overswitchissetinthemidposition(default).
Howeverforsystemswithunderoorheatingorsinglepipeloop
systems,itmaybenecessarytoturnthechange-overswitch
upwards.
Higherpumpspeedsareonlyusediftheheatingrequirement
increases.

Re-thightenconnections

Afterwaterhasbeenaddedtothesystemandthesystemhasbeen
putintooperation,re-tightenALLconnections.

Pump

Thepumpmustbeswitchedoffduringsystemll.

Underoorheating:

Pumpstopfunction

Ifthesubstationisusedinconnectionwithunderoorheating,the
circulationpumpmustbeconnectedtothepumpstopfunctionin
theunderoorheatingcontroller .Thepumpmustbestoppedif
allunderoorheatingcircuitsareclosed.

Warranty

Ifthisisnotpossible,thenowmustbecontinuedthroughthe
by-pass.Failingthis,thepumpwillbeatriskofseizureandany
remainingwarrantywillbewithdrawn.

Summeroperation:

Switchoffpump

Insummerthecirculationpumpmustbeswitchedoffandthe
shut-offvalvetoHEsupplyclosed.

Runningpumpbi-weekly

Itisrecommendedtostartupthecirculationpump(for2minutes)
onceamonthduringsummer;theshut-offvalveoftheHEsupply
mustbeshut.

Electroniccontroller

Mostelectroniccontrollerswillstartupthepumpautomatically
(pleasenotemanufacturer´sinstructions).

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4.3Electricalconnections

Beforemakingelectricalconnections,pleasenotethe
following:

Safetynotes

Pleasereadtherelevantpartsofthesafetynotes.

230V

Thesubstationmustbeconnectedto230VACandearth.

Disconnection

Thesubstationmustbeelectricallyconnectedsothatitcanbe
disconnectedforrepairs.

Outdoortemperaturesensor

Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.

Theoutdoorsensormustbeconnectedtothestationonthe
terminalblockundertheelectroniccontrol.

Authorizedelectrician

Electricalconnectionsmustbemadebyanauthorizedelectricianonly.

Localstandards

Electricalconnectionsmustbemadeinaccordancewithcurrent
regulationsandlocalstandards.

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5.0Design

5.1Design

Yoursubstationmightlookdifferentthanthesubstationshown.

Designdescription

B

Heatexchanger,DHW

11

Domestichotwaterpump

F

Electroniccontroller

27

Actuator,HE

7

Thermostaticcontroller,DHW

31

Differentialpressurecontroller

10

Circulationpump,HE

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5.2Schematicdiagram

TermixVMTDCompact20-Electronic/thermostaticschematicdiagram

DH

Supply

HE
Supply

DH

Return

HE
Return

DHW

DCW

HWC

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

Schematicdescription

B

Heatexchanger,DHW

11

Domestichotwaterpump

24

Deliveredloosewithunit

F

Electroniccontrollerheating

16

Outdoorsensor

27

Actuator

1

Ballvalve

18

Thermometer

29

2-waymotorizedvalve

2

Singlecheckvalve

19

Surfacesensor

31

Differentialpressurecontroller

10

Circulationpump

23

Ballvalve

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TermixVMTDCompact20-Electronicschematicdiagram

DH

Supply

HE
Supply

DH

Return

HE
Return

DHW

DCW

HWC

Yoursubstationmightlookdifferentthantheschematicdiagramshown.

Schematicdescription

B

Heatexchanger,DHW

10

Circulationpump

23

Ballvalve

F

Electroniccontrollerheating

11

Domestichotwaterpump

24

Deliveredloosewithunit

1

Ballvalve

16

Outdoorsensor

27

Actuator

2

Singlecheckvalve

18

Thermometer

29

2-waymotorizedvalve

7

Thermostaticvalve

19

Surfacesensor

31

Differentialpressurecontroller

DHW:DomesticHotWater
DCW:

DomesticColdWater

HWC:

HotWaterCirculation

DHSupply:DistrictHeatingSupply
DHReturn:DistrictHeatingReturn
HESupply:HeatingSupply
HEReturn:HeatingReturn

5.2.1Technicalparameters

Technicalparameters

Nominalpressure:

PN16

Max.DHsupplytemperature:

120°C

Min.DCWstaticpressure:

0,5bar

Brazingmaterial(HEX):

Copper
Heatexchangerstestpressure:30bar
Soundlevel:≤55dB

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6.0Controls

6.1Heatingcircuit

6.1.1Differentialpressurecontroller

Thedifferentialpressurecontrollersmoothsouttheuctuationsin
pressurearrivingfromthedistrictheatingnetwork.Theoperating
pressureinthesubstationisthusheldsteady.

6.1.2RAVKcontroller

HEtemperaturecontrol

TheHEowtemperatureintheheatingcircuitiscontrolledbythe
HEtemperaturecontroller.

Thermostaticcontrol

ThetemperatureoftheHEowlineisadjustedasfollows:
Toincreasetemperature,turnthehandleonthethermostatic
controllertoselectahighernumber.
Todecreasetemperature,turnthehandleonthethermostatic
controllertoselectalowernumber .

RAVKcontroller(25-65°C).Thetemperaturesettingisasfollows:
1=25°C
2=35°C
3=45°C
4=55°C
5=65°C

Thevaluesareintendedasaguide.

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6.1.3Flowcontrollerwithintegratedcontrolvalve

Thecontrollerisaself-actingowcontrollerwithintegratedcontrol
valve.Thecontrollercloseswhensetmax.owisexceededand
canbeusedincombinationwithDanfosselectricalactuatorswith
orwithoutsafetyfunction.Springreturnmotorcanbeusedas
safetyfunctionbypowerfailure.

6.1.4Electroniccontrol

Substationswithelectroniccontrolmustbesetinaccordancewith
manufacturer´sinstructions.
Wheretheroomtemperatureiscontrolledbyradiatorthermostats,
itisrecommendedthatthermostatsbesetforminimum
temperatureineachroom.

6.1.5Outdoortemperaturesensor(ESMT)

Outdoorsensorsshouldbemountedsoastoavoidexposureto
directsunlight.Theyshouldnotbeplacedclosetodoors,windows
orventilationoutlets.

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6.1.6Circulationpump

ALPHA2pumpshavebothvariablespeedpressurecontrolled
operation,andstandardselectablethreespeedoperation.
TheuniqueAUTOADAPTfeatureallowsthepumptomatchits
performancetothesystemrequirements,helpingtoreducenoise
whenthermostaticvalvesareclosingdown.
EnergylabellingclassA

ALPHA2Lpumpshavebothvariablespeedpressurecontrolled
operation,andstandardselectablethreespeedoperation.The
variablespeedmodulatingmodesallowthepumptomatchits
performancetothesystemrequirements,helpingtoreducenoise
whenthermostaticvalvesareclosingdown.
EnergylabellingclassA

UPSpumpsareacompleterangeofcirculatorpumpswith3
speeds.
EnergylabellinguptoclassB

6.2DHWtemperaturecontrol

DHWtemperaturecontrol

TherearevarioustypesofDHWtemperaturecontrolusedin
Danfosssubstations.
DHWtemperatureshouldbeadjustedto45-50°C,asthisprovides
optimalutilisationofDHwater.AtDHWtemperaturesabove55°C,
thepossibilityoflimescaledepositsincreasessignicantly.

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6.2.1AVTBcontroller(20–60°)

Thetemperaturesettingisasfollows:
1=20°C
2=35°C
3=50°C
4=60°C
5=70°C

Thevaluesareintendedasaguide.

TheAVTBoperatesatitsbestatDHsupplytemperaturesofupto
90°C.

Thermostaticcontrol

DHWtemperatureisadjustedasfollows:
Toincreasetemperature,turnthehandleonthethermostatic
controllertoselectahighernumber.
Todecreasetemperature,turnthehandleonthethermostatic
controllertoselectalowernumber .

6.2.2Electric2–waymotorizedvalve

Actuatorswithorwithoutsafetyfunctionareavailablefor3-point
controls.Spring-returnactuatorscanbeusedtoprovidesafety
shut-offintheeventofpowerfailure.

6.3Other

6.3.1Safetyvalve

Thepurposeofthesafetyvalveistoprotectthesubstationfrom
excessivepressure.
Theblow-offpipefromthesafetyvalvemustnotbeclosed.The
blow-offpipeoutletshouldbeplacedsothatitdischargesfreely
anditispossibletoobserveanydrippingfromthesafetyvalve.
Itisrecommendedtochecktheoperationofsafetyvalvesat
intervalsof6months.Thisisdonebyturningthevalveheadin
directionindicated.

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6.3.2Strainer

Strainersshouldbecleanedregularlybyauthorizedpersonnel.The
frequencyofcleaningwoulddependonoperatingconditionsand
themanufacturer’sinstructions.

6.3.3Domestichotwaterpump

Important!

Itisnecessarytomountadomestichotwatercirculationpumpon
thewaterheatertoavoidregulationproblems.
Thecirculationpumpcannotbeswitchedoff,sincethiswillresult
inregulationproblems.(noowatthesensor).

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6.4Maintenance

Thesubstationrequireslittlemonitoring,apartfromroutine
checks.Itisrecommendedtoreadtheenergymeteratregular
intervals,andtowritedownthemeterreadings.

RegularinspectionsofthesubstationaccordingtothisInstruction
arerecommended,whichshouldinclude:

Strainers

Cleaningofstrainers.

Meters

Checkingofalloperatingparameterssuchasmeterreadings.

Temperatures

Checkingofalltemperatures,suchasDHsupplytemperatureand
DHWtemperature.

Connections

Checkingallconnectionsforleakages.

Safetyvalves

Theoperationofthesafetyvalvesshouldbecheckedbyturning
thevalveheadintheindicateddirection.

Venting

Checkingthatthesystemisthoroughlyvented.

Inspectionsshouldbecarriedoutminimumeverytwoyears.

SparepartscanbeorderedfromDanfoss.Pleaseensurethatany
enquiryincludesthesubstationserialnumber.

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.

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7.0Troubleshooting

7.1Troubleshootingingeneral

Intheeventofoperatingdisturbances,thefollowingbasicfeatures
shouldbecheckedbeforecarryingoutactualtroubleshooting:

•thesubstationisconnectedtoelectricity,

•thestrainerontheDHsupplypipeisclean,

•thesupplytemperatureoftheDHisatthenormallevel
(summer,atleast60°C-winter,atleast70°C),

•thedifferentialpressureisequaltoorhigherthanthenormal
(local)differentialpressureintheDHnetwork–ifindoubt,ask
theDHplantsupervisor,

•pressureonthesystem-checktheHEpressuregauge.

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualiedandauthorizedpersonnelonly.

7.2TroubleshootingDHW

ProblemPossiblecauseSolution

Strainerinsupplyorreturnlineclogged.Cleanstrainer(s).

DHWcirculationpumpoutoforderorwith
toolowsetting.

Checkcirculationpump.

Defectiveorcloggednon-returnvalve.

Replace–clean.

Noelectricity.Check.

Wrongsettingofautomaticcontrols,ifany.Toadjustanelectroniccontrollerfor

DHW,pls.noteenclosedinstructionsfor
electroniccontroller.

Scalingoftheplateheatexchanger.

Replace–rinseout.

Defectivemotorizedvalve.Check(usemanualfunction)–replace.

Defectivetemperaturesensors.

Check–replace.

ToolittleornoDHW.

Defectivecontroller.

Check–replace.

DCWisbeingmixedwiththeDHW,e.g.in
adefectivethermostaticmixingvalve.

Check–replace.

Hotwaterinsometapsbutnotinall.

Defectiveorcloggednon-returnvalveon
circulationvalve.

Replace–clean.

Taptemperaturetoohigh;DHWtapload
toohigh.

Thermostaticvalveadjustedtoatoohigh
level.

Check–set.

Scalingoftheplateheatexchanger.

Replace–rinseout.

Temperaturedropduringtapping.

LargerDHWowthanthesubstationhas
beendesignedfor .

ReduceDHWow.

Thermostaticcontrolvalvedoesnotclose

TemperaturedifferencebetweenDH
supplyandDHWsetpointtoolow.

Lowerthesetpointtemperatureor
increasetheDHsupplytemperature.

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7.3TroubleshootingHE

ProblemPossiblecauseSolution

Toolittleornoheat.StrainercloggedinDHorHEcircuit

(radiatorcircuit).

Cleangate/strainer(s).

ThelterintheenergymeteronDHcircuit
clogged.

Cleanthelter(afterconsultingtheDH
plantoperator).

Defectiveorwronglyadjusteddifferential
pressurecontroller.

Checktheoperationofthedifferential
pressurecontroller–cleanthevalveseatif
required.

Sensordefective–orpossiblydirtinthe
valvehousing.

Checktheoperationofthethermostat–
cleanthevalveseatifrequired.

Automaticcontrols,ifany,wronglysetor
defective-possiblypowerfailure.

Checkifthesettingofthecontroller
iscorrect–seeseparateinstructions.
Checkthepowersupply.Temporary
settingofmotorto“manual”control–see
instructionsonautomaticcontrols.

Pumpoutofoperation.Checkifthepumpisreceivingpowerand

thatitturns.Checkifthereisairtrappedin
thepumphousing–seepumpmanual.

Thepumpissetattoolowspeedof
rotation.

Setthepumpathigherspeedofrotation.

Pressuredrop–thepressuredropon
theradiatorcircuitshowslowerthan
recommendedoperatingpressure.

Fillwateronthesystemandcheckthe
functioningofthepressureexpansion
vesselifrequired.

Airpocketsinthesystem.Venttheinstallationthoroughly.

Limitingofthereturntemperature
adjustedtoolow.

Adjustaccordingtoinstructions.

Defectiveradiatorvalves.

Check–replace.

Unevenheatdistributioninbuilding
becauseofincorrectlysetbalancingvalves,
orbecausetherearenobalancingvalves.

Adjust/installbalancingvalves.

Diameterofpipetosubstationtoosmallor
branchpipetoolong.

Checkpipedimensions.

Unevenheatdistribution.Airpocketsinthesystem.Venttheinstallationthoroughly.

DHsupplytemperaturetoohigh.

Wrongsettingofthermostatorof
automaticcontrols,ifany.

Adjustautomaticcontrols,–see
instructionsforautomaticcontrols.

Defectivecontroller.Thecontrollerdoes
notreactasitshouldaccordingtothe
instructions.

Callautomaticcontrolsmanufactureror
replacetheregulator.

Defectivesensoronself-actingthermostat.

Replacethermostat–orsensoronly.

DHsupplytemperaturetoolow.

Wrongsettingofautomaticcontrols,ifany.

Adjustautomaticcontrols–seeinstructions
forautomaticcontrols.

Defectivecontroller.Thecontrollerdoes
notreactasitshouldaccordingtothe
instructions.

Callinautomaticcontrolsmanufactureror
replacecontroller.

Defectivesensoronself-actingthermostat.

Replacethermostat–orsensoronly.

Wrongplacement/ttingofoutdoor
temperaturesensor.

Adjustlocationofoutdoortemperature
sensor.

Strainerclogged.Cleangate/strainer.

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ToohighDHreturntemperature.

Toosmallheatingsurface/toosmall
radiatorscomparedtothetotalheating
requirementofthebuilding.

Increasetotalheatingsurface.

Poorutilizationofexistingheatingsurface.
Defectivesensoronself-actingthermostat.

Makesuretheheatisdistributedevenly
acrossthefullheatingsurface–openall
radiatorsandkeeptheradiatorsinthe
systemfromheatingupatthebottom.It
isextremelyimportanttokeepthesupply
temperaturetotheradiatorsaslowas
possible,whilemaintainingareasonable
levelofcomfort.

Thesystemissinglepipeloop.

Thesystemshouldfeatureelectronic
controlsaswellasreturnsensors.

Pumppressuretoohigh.Adjustpumptoalowerlevel.

Airinsystem.

Ventthesystem.

Defectiveorincorrectlysetradiator
valve(s).Singlepipeloopsystemsrequire
specialone-piperadiatorvalves.

Check–set/replace.

Dirtinthemotorizedvalveorinthe
differentialpressurecontroller.

Check–cleanout.

Defectivemotorizedvalve,sensoror
automaticcontroller.

Check–replace.

Electroniccontrollernotadjustedcorrectly.Adjustaccordingtoinstructions.

Noiseinsystem.

Pumppressuretoohigh.Adjustpumptoalowerlevel.

Heatloadtoohigh.

Defectivemotorizedvalve,sensoror
electroniccontroller.

Check–replace.

7.4Disposal

Disposal

Thisproductshouldbedismantledanditscomponents
sorted,ifpossible,invariousgroupsbeforerecycling
ordisposal.

Alwaysfollowthelocaldisposalregulations.

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InstallationGuideTermixVMTDCompact20

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VI.CW.W2.02/LUK41200

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InstallationGuideTermixVMTDCompact20

8.0Declaration

8.1Declarationofconformity

Declarationofcompliance

We:

GeminaT ermixA/S
MemberoftheDanfossGroup
Navervej15-17
DK-7451Sunds

doherebyonourownresponsibilitydeclarethatthefollowingproducts:

TermixSubstations

coveredbythisdeclarationisinconformitywiththefollowingdirective(s),
standard(s)orothernormativedocument(s),
providedthattheproductsareusedinaccordancewithourinstructions.

EUDirectives:

MachineryDirective2006/42/EEC

ENISO14121-1Safetyofmachinery-Riskassessment
EN60204-1-Safetyofmachinery-Electricalequipmentofmachines

EMCDirective2004/108/EEC

EN61000-6-22007Electromagneticcompatibility

-Genericstandard:Immunityindustry
EN61000-6-32007Electromagneticcompatibility

-Genericstandard:Emissionforresidential,commercialandlightindustry

PEDDirective97/23/EEC

AllsubstationsthatfallsunderArticle3.3andcategory1shallnotbeCE-marked
accordingtothisdirective,howeverallessentialsafetyrequirementsfromthe
PEDDirective97/23/EECarefollowedtoensurehydraulicsafety

Thisdeclarationisimmediatelyannulled,iftheproductisinterferedwithinanyway,
whichinterfereswiththeabovementioneddirectivesandstandards,
withoutthewrittenconsentfromGeminaT ermixA/S.

2010.01.05—Sunds

Timeandplace

LarsGinnerup

Responsibleforquality

DanfossHeating

VI.CW.W2.02/LUK41200

DEN-GT

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InstallationGuideTermixVMTDCompact20

ProducedbyDanfossA/S©01/2012