Danfoss One-Q Operating guide

OperatingGuide

TermixOne-Q

1.0TableofContents

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

2.0Functionaldescription......................................2

3.0Safetynotes.....................................................3

3.1SafetyNotes–general............................................3

4.0Mounting........................................................4

4.1Mounting...........................................................4

5.0Design.............................................................6

5.1Design...............................................................6

5.2Schematicdiagram................................................7

6.0Controls..........................................................9

6.1DHWtemperaturecontrol........................................9

6.2Other.................................................................10

6.3Maintenance........................................................11

7.0Troubleshooting..............................................12

7.1Troubleshootingingeneral......................................12

7.2TroubleshootingDHW............................................13

7.3Disposal.............................................................14

8.0Declaration......................................................15

8.1Declarationofconformity........................................15

©Danfoss|2018.12VI.GE.I5.02/LUK38020|1

OperatingGuideTermixOne-Q

2.0Functionaldescription

Districtheatingsubstationfordirectheatingand
instantaneousdomestichotwaterwithaself-acting
thermostatic/flowcontroller .Designedforwall-mounting.

Application

TheTermixOneisaninstantaneouswaterheaterfeaturingsuperb
heatextractionandhighperformance.TheTermixOneissuitable
forflats,single-familyhousesaswellasforsmallapartment
buildingswithupto10apartments.Thewaterheaterisavailablein
threesizes,eitherfor1apartment,for1‑4apartmentsorfor5up
to10apartments.TheTermixOneisapplicablefordecentralized
heatingsystems–aswellasfordistrictheatingnetworkswith
summeroperationatlowtemperaturesorchangesindifferential
pressure.TheTermixOneheatexchangercoolsoutthedistrict
heatingwaterveryefficiently,therebycreatingaverygood
operationeconomy.

Domestichotwater(DHW)

Thedomestichotwaterispreparedintheheatexchangerand
thetemperatureisregulatedwithaself-actingthermostatic
controlvalvethatcontrolstheDHWpreparationbyusinga
flow-compensationprinciple.Therapidclosingofthecontrol
valveprotectstheheatexchangeragainstoverheatingandlime
scaleformation.Thecontrolvalveensuresastablehotwater
temperaturebyvaryingloads,flowtemperaturesanddifferential
pressurewithouttheneedforreadjustingthevalve.Theheat
exchangercoolsoutthedistrictheatingwaterveryefficiently,
therebycreatingaverygoodoperatingeconomy.Thecontrol
valvealsoworksasabypasskeepingthehousesupplylineat35°C
duringstandstill.Thisshortensthewaitingperiodsduringsummer
whentheheatingsystemisinreducedoperation.

2|©Danfoss|2018.12

VI.GE.I5.02/LUK38020

OperatingGuideTermixOne-Q

3.0Safetynotes

3.1SafetyNotes–general

Thefollowinginstructionsrefertothestandarddesignof
substation.Specialversionsofsubstationsareavailableon
request.

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

Corrosionprotection

Allpipesandcomponentsaremadeofstainlesssteelandbrass.
Themaximumchloridecompoundsoftheflowmediumshouldnot
behigherthan150mg/l.
Theriskofequipmentcorrosionincreasesconsiderablyifthe
recommendedlevelofpermissiblechloridecompoundsis
exceeded.

Energysource

Thesubstationisdesignedfordistrictheatingastheprimary
sourceofenergy.However,alsootherenergysourcescanbeused
wheretheoperatingconditionsallowitandalwaysarecomparable
todistrictheating.

Application

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

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.

Pleaseobserveinstructionscarefully

Toavoidinjurytopersonsanddamagetothedevice,itisabsolutely
necessarytoreadandobservetheseinstructionscarefully.

Warningofhighpressureandtemperature

Beawareoftheinstallation’spermissiblesystempressureand
temperature.

Themaximumtemperatureoftheflowmediuminthesubstationis
110°C.

Themaximumoperatingpressureofthesubstationis10bar.PN16
versionsareavailableonenquiry.

Theriskofpersonsbeinginjuredandequipmentdamagedincreases
considerablyiftherecommendedpermissibleoperatingparameters
areexceeded.

Thesubstationinstallationmustbeequippedwithsafetyvalves,
however,alwaysinaccordancewithlocalregulations.

Choiceofmaterial

Choiceofmaterialsalwaysincompliancewithlocallegislation.

Safetyvalve(s)

Werecommendmountingofsafetyvalve(s),however,alwaysin
compliancewithlocalregulations.

Connection

Thesubstationmustbeequippedwithfeaturesthatensurethat
thesubstationcanbeseparatedfromallenergysources(also
powersupply).

Emergency

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

REACH

AllDanfossA/SproductsfulfilltherequirementsinREACH.
OneoftheobligationsinREACHistoinformcustomersabout
presenceofCandidatelistsubstancesifany,weherebyinform
youaboutonesubstanceonthecandidatelist:Theproduct
containsbrasspartswhichcontainslead(CASno:7439-92-1)ina
concentrationabove0.1%w/w.

Storage

Anystorageofthesubstationwhichmaybenecessarypriorto
installationshouldbeinconditionswhicharedryandheated.

Warningofhotsurface

Thesubstationhasgothotsurfaces,whichcancauseskinburns.
Pleasebeextremelycautiousincloseproximitytothesubstation.

Powerfailurecanresultinthemotorvalvesbeingstuckinopen
position.Thesurfacesofthesubstationcangethot,whichcancause
skinburns.Theballvalvesondistrictheatingsupplyandreturnshould
beclosed.

Warningoftransportdamage

Beforesubstationinstallation,pleasemakesurethatthesubstation
hasnotbeendamagedduringtransport.

IMPORTANT-Tighteningofconnections

Duetovibrationsduringtransportallflangeconnections,screwjoints
andelectricalclampandscrewconnectionsmustbecheckedand
tightenedbeforewaterisaddedtothesystem.Afterwaterhasbeen
addedtothesystemandthesystemhasbeenputintooperation,
re-tightenALLconnections.

VI.GE.I5.02/LUK38020

©Danfoss|2018.12|3

OperatingGuideTermixOne-Q

4.0Mounting

4.1Mounting

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

Connections:

1.Domesticcoldwater(DCW)

2.Domestichotwater(DHW)

3.Districtheating(DH)supply

4.Districtheating(DH)return

Connectionsizes:

Authorizedpersonnelonly

Assembly,start-upandmaintenanceworkmustbeperformedby
qualifiedandauthorizedpersonnelonly.

DH:
DCW+DHW:

Dimensions(mm):

Type1+2withoutcover:
H428xW312xD155
Type1+2withcover:
H430xW315xD165
Type3withoutcover:
H468xW312xD155
Type3withcover:
H470xW315xD165

Weight(approx.):10–12kg

G¾”(int.thread)
G¾”(int.thread)

Thepipeplacementcandeviatefromtheshowndrawing.Pleasenote
themarkingsonthestation.

4|©Danfoss|2018.12

VI.GE.I5.02/LUK38020

OperatingGuideTermixOne-Q

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.

Keyholeformounting.

Tightening

Duetovibrationduringtransport,allsubstationconnectionsmust
becheckedandtightenedbeforeinstallation.

Unusedconnections

Unusedconnectionsandshut-offvalvesmustbesealedwitha
plug.Shouldtheplugsrequireremoval,thismustonlybedoneby
anauthorizedservicetechnician.

Installation:

Strainer

Ifastrainerissuppliedwiththestationitmustbefittedaccording
toschematicdiagram.Pleasenotethatthestrainermaybe
suppliedloose.

Connections

Internalinstallationanddistrictheatingpipesconnectionsmustbe
madeusingthreaded,flangedorweldedconnections.

VI.GE.I5.02/LUK38020

©Danfoss|2018.12|5