Vaillant VC 156/5-7 Operating Instructions Manual

Also see for VC 156/5-7: Installation and maintenance instructions

Contents

Operation 40020189874_03 ecoTEC exclusive Operating instructions 94.6 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.4.7 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.Conditions: Product with integrated hot water generation▶ Open the cold water stop valve.4.8 Starting up the product▶ Only start up the product once the casing has been com-pletely closed.4.9 Switching on the product5021▶ Press the on/off button (1).◁ The "Basic display" (→ Page 7) (2) appears on thedisplay.4.10 Setting the language1. Press and hold and at the same time.2. Also briefly press .3. Press and hold and until the display shows thelanguage setting.4. Select the required language by pressing or .5. Confirm by pressing .6. Once you have set the correct language, pressagain to confirm this.4.11 Setting the hot water temperatureConditions: Water hardness: > 3.57 mol/m³▶ Have a competent person take appropriate measures toprotect against Legionella.▶ Set the hot water temperature to a maximum of 50 °C.1. Press ( ).◁ The set hot water temperature flashes in the display.Conditions: No controller connected▶ Change the hot water temperature by pressing or.▶ Confirm by pressing .Conditions: Controller connected▶ Use to set the maximum possible hot water temper-ature on the product.▶ Confirm by pressing .▶ Set the required hot water temperature on the controller(→ Controller operating instructions).4.12 Switching Comfort mode on and offNoteComfort mode immediately supplies hot water atthe required temperature, without you having towait for the water to heat up.1. Press ( ).2. Press ( ).◁ Comfort on or Comfort off are shown flashing inthe display.3. Activate or deactivate Comfort mode by pressing orrespectively.4. Press to confirm this change.◁ When you have activated Comfort mode, the " "symbol appears on the basic display. When youhave deactivated Comfort mode, the " " symbolgoes out on the basic display.4.13 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 .