Vaillant ecoFIT sustain 835 Operating Instructions Manual

Also see for ecoFIT sustain 825: Installation and maintenance instructions Installation and maintenance instructions Installation and maintenance instructions

Operation 40020230530_01 ecoFIT sustain Operating instructions 114.4 Cabinet-type casingEnclosing the product in cabinet-type cas-ing requires compliance with the applic-able design instructions.If you require cabinet-type casing for yourproduct, consult a heating specialist com-pany. Never, under any circumstances,enclose the product yourself.4.5 Opening the isolator devices1. Ask the competent person who in-stalled the product to explain to youwhere these isolator devices are loc-ated and how to handle them.2. Open the gas isolator cock fully.3. Open the service valves in the heatinginstallation's flow and return.4. Open the cold water stop valve.4.6 Starting up the product▶ Only start up the product once the cas-ing has been completely closed.4.7 Switching on the product▶ Switch on the product via the mainswitch installed on-site.4.8 Setting the heating flowtemperature1. Press ( ).◁ The target value of the heating flowtemperature appears on the display.NoteThe competent person mayhave adjusted the maximumpossible temperature.Conditions: No controller connected▶ Use or to set the required heatingflow temperature.▶ Confirm by pressing .Conditions: Controller connected▶ Set the maximum possible heating flowtemperature on the product.▶ Confirm by pressing .▶ Set the required heating flow temperat-ure on the controller (→ Controller oper-ating instructions).4.9 Setting the hot watertemperatureWarning.Risk of being scalded by hotwater.To protect against Legionella,the hot water can be heated upto above 60 °C at pre-definedtimes.▶ Have a competent personinform you about the meas-ures that should be taken toprotect against Legionella inyour system.1. Press ( ).◁ The set hot water temperatureflashes in the display.Conditions: No controller connected▶ Change the hot water temperature bypressing or .▶ Confirm by pressing .Conditions: Controller connected▶ Use to set the maximum possible hotwater temperature on the product.▶ Confirm by pressing .▶ Set the required hot water temperatureon the controller (→ Controller operatinginstructions).