Cleaning and lling the collector circuit
Thellingandrinsingmustbecarriedoutuntilitisensuredthatthesystemiscompletelyde-aerated.Flownoisesduring
collectorpumpoperationindicatethatthereisstillairinthemachinethatcanberemovedviathemanualprimer
Beforestartingwiththecleaningand/orllingprocess,pleasereadcarefullythroughthefollowingpointsthoroughly!
Solar-side (collector side)
• Onlyglycolwatermixtures(frost-resistanttoatleast-25°)maybeusedforllingthesolarcircuit
• Beforestartingwithcleaningandlling,ensurethatallconnections(solarforward/returnows,etc.)
are provided with correct seals and are tightly connected.
• ConnectthellpumpforwardowtoKFEvalveA(llingnozzle).
• ConnectthellpumpreturnowtoKFEvalveB(purgingnozzle).
• First,openKFEvalveA(handleinowdirection).
• Now,openKFEvalveB(handleinowdirection).
• Startthecleaningprocessofthesolarcircuitbyswitchingonthellingpump.
• Letthepumprununtiltheglycolwatermixtureowsbackintothetankwithoutbubbles.
• CloseKFEvalveB(handleagainstowdirection).
• Pay attention to the gauge.
• Whenthegaugehasreachedthedesiredoperatingpressure,closeKFEvalveA(handleagainstowdirection).
• Now,thepumpcanbeswitchedoffandthellingpumpconnectionscanbedisconnectedfromtheKFEvalvesAandB.
• Thesolarcircuitisnowcompletelylledandreadyforuse.
• Shouldairnoisebediscoveredinthecircuitduringoperation,thenbeginwithpoint1again.
Buffer-side
• OnlyheatingwatermustbeusedaccordingtonormÖNORMH5195-1:2010forllingthebuffercircuitandbuffertank.
• Beforestartingtoconnecttheconnectionlinesfromthestationtothebuffertank,
closeballvalvesC,DandE(handleagainstowdirection)onthestation
• Beforestartingthelling,makecertainthatallconnectionsareprovidedwithcorrectsealsandaretight.
• Now,openallvalvestotheconnectionlinesonthebuffertank.
• Now,openvalveC,thenvalveDandnallyvalveEonthestation.
• Ifnowaternoiseisheard,switchthebuffercircuitpumponmanually.
• Letthisprocessrunforseveralminutes.Afterwards,switchthepumpoff.
• Ventthebuffertankandtop-offwithheaterwaterifnecessary.
• Thebuffercircuitisnowcompletelylledandreadyforuse.