Tech Controllers ST-976 - Page 29

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Registration
Inthecaseofusingadditionalvalves,itisnecessarytoregisterthevalvebyenteringthemodulenumberin
ordertoconfiguretheparameters.
The registrationcode may befoundonthebackofthecasingor in software version submenu (MENU ‐>
softwareversion).
TheremainingsettingsoftheadditionalvalvemaybefoundinServicemenu.Valvecontrollershouldbesetas
subordinateandtheusershouldselectthesensorsdependingonuse.
ValveON/OFF
Thisfunctionisusedtodisablevalvecontroltemporarily.
Pre‐setvalvetemperature
Thisparameterdefinesthedesiredtemperaturewhichthevalveshouldmaintain.Duringproperoperationthe
temperatureofwaterdownstreamofthevalveapproachesthepre‐setvalue.
Calibration
Thisfunctionenablestheusertocalibratethebuilt‐invalveatanytime.Duringthisprocessthevalveisrestored
toitssafeposition–inthecaseofCHvalveitisfullyopenedwhereasinthecaseoffloorvalveitisclosed.
Singlestroke
Thisisamaximumsinglestroke(openingorclosing)thatthevalvemaymakeduringonetemperature
sampling.Ifthetemperatureisnearthepre‐setvalue,thestrokeiscalculatedonthebasisofproportionality
coefficientparametervalue.Thesmallerthesinglestroke,themorepreciselythesettemperaturecanbe
achieved.However,ittakeslongerforthesettemperaturetobereached.
Minimumopening
Theparameterdeterminesthesmallestvalveopening.Thankstothisparameter,thevalvemaybeopened
minimally,tomaintainthesmallestflow.
Openingtime
Thisparameterdefinesthetimeneededforthevalvetoopenfrom0%to100%position.Thisvalueshouldbe
setinaccordancewiththespecificationgivenontheactuatorratingplate.
Measurementpause
Thisparameterdeterminesthefrequencyofwatertemperaturemeasurement(control)downstreamofthe
CHvalve.Ifthesensorindicatesachangeintemperature(deviationfromthepre‐setvalue),theelectricvalve
willopenorclosebythepre‐setstroke,inordertoreturntothepre‐settemperature.
Valvetype
BUILT‐INVALVE/
ADDITIONAL
VALVE1,2 
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VALVETYPE
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CH
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Floor
Withthisoptiontheuserchoosesthetypeofvalvetobecontrolled:
 CH‐selectifyouwanttocontrolthetemperatureoftheCHcircuitusingthevalvesensor.Thevalve
sensorshouldbeinstalleddownstreamofthemixingvalveonthesupplypipe.
 FLOOR‐selectifyouwanttocontrolthetemperatureoftheunderfloorheatingcircuit.Itprotectsthe
underfloorheatingsystemagainstdangeroustemperature.IftheuserselectsCHasthevalvetypeand
connectsittotheunderfloorheatingsystem,thefragilefloorinstallationmaybedamaged.