Vaillant ecoFIT sustain 618 Operating Instructions Manual

Also see for ecoFIT sustain 615: Installation and maintenance instructions

Contents

Operation 40020277253_00 ecoFIT sustain Operating instructions 74 Operation4.1 Operating conceptOperatorcontrolelementFunction– Setting the hot water temperature– Cancelling the activation of an operatingmode– Cancelling a change to a set value– Going one selection level higher– Setting the heating flow temperature– Reading the system pressure– Activating the comfort mode– Activating the operating mode– Confirm setting– Going one selection level lower+ atthe sametime– Calling up the menuor – Reducing or increasing the set value– Scrolling through menu entriesThe current function of the and buttons is shown inthe display.Adjustable values are always displayed as flashing.You must always confirm a change to a value. Only then isthe new setting saved. You can press to cancel a proced-ure at any time.4.2 Basic display50The basic display shows the current condition of the product.If you press a selection button, the activated function is dis-played in the display.The functions that are available depend on whether a con-troller is connected to the product.You can switch back to the basic display by:– Pressing to exit the selection levels– Not pressing any button for longer than 15 minutes.If there is an error message present, the basic displaysswitches to the error message.4.3 Adjustment and display levelsThe product has two adjustment and display levels.The end user level contains information and setting optionsthat you require as the end user.The installer level is reserved for the competent person. It isprotected by a code. Only competent persons may changeany settings in the installer level.4.4 Cabinet-type casingEnclosing the product in cabinet-type casing requires compli-ance with the applicable design instructions.If you require cabinet-type casing for your product, consulta heating specialist company. Never, under any circum-stances, enclose the product yourself.4.5 Opening the isolator devices1. Ask the competent person who installed the product toexplain to you where these isolator devices are locatedand how to handle them.2. Open the gas isolator cock fully.3. Open the service valves in the heating installation's flowand return.Applicability: Product with connected domestic hot water cylinder▶ Open the cold water stop valve.4.6 Starting up the product▶ Only start up the product once the casing has been com-pletely closed.4.7 Switching on the product▶ Switch on the product via the main switch installed on-site.4.8 Setting the heating flow temperature1. Press ( ).◁ The target value of the heating flow temperatureappears on the display.NoteThe competent person may have adjustedthe maximum possible temperature.Conditions: No controller connected▶ Use or to set the required heating flow temperat-ure.▶ Confirm by pressing .Conditions: Controller connected▶ Set the maximum possible heating flow temperature onthe product.▶ Confirm by pressing .▶ Set the required heating flow temperature on the control-ler (→ Controller operating instructions).