4 Function10 Operating instructions aroSTOR 0020285064_00Information on thedata plateMeaningThe cylinder con-tains a combustibleproductSee instructions3.6 CE markingThe CE marking shows that the productscomply with the basic requirements of theapplicable directives as stated on the dataplate.The declaration of conformity can beviewed at the manufacturer's site.3.7 Hot Water AssociationVaillant is a full member of the Hot WaterAssociation and promotes the schemein association with its cylinder range.Details are available on the web sitewww.vaillant.co.uk4 Function4.1 Operating conceptYou can use the three buttons to controlthe product.– You can press the menu button to ac-cess the main menu.– You can press the rotary knob to selectthe menu items and confirm set values.You can press the rotary knob to setthese values.– You can use the clock button to set thetime.The display switches off 180 seconds afterthe last operation.4.2 Switching on the product11. Before starting up the product, ensurethat the plugs (1) have been removedfrom the condensate discharge con-nection.2. Ensure that the stopcock upstream ofthe safety group at the cold water inletis open.3. Before switching on the power supply,ensure that the domestic hot watercylinder is full.4. Ensure that the product has been con-nected to the power supply.5. Press the product's on/off button.◁ The display switches on.◁ A green LED lights up on thedisplay.◁ The background lighting on thedisplay flashes and prompts you toset the language.– Turn the rotary knob to set thelanguage. Press the rotary knobto confirm the selection.◁ The unit only offers you the lan-guage selection when it is switchedon for the first time. However, youhave the opportunity to change thelanguage setting. To do this, followthe instructions in the section on set-ting the language. (→ Page 11)◁ The heat pump only starts whenthe cold water temperature is be-