Vaillant ecoTEC SERIES Operating Manual

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Vaillant ecoTEC SERIES Operating Manual Manual pdf 13 page image

13Operating manual ecoTEC 0020052777_004.5.2 Setting the flow temperature (using a con-troller)1Fig. 4.9 Setting the flow temperature using a controllerIf your boiler has a room thermostat or weather com-pensator, you must make the following settings:• Turn the rotary knob (1) for the heating feed tempera-ture all the way to the right.The flow temperature is automatically adjusted by thecontroller (for information, see its operating manual).4.5.3 Switching heating mode off (summer mode)1Fig. 4.10 Switching off heating (summer operation)You can switch off the heating in summer withoutswitching off the hot water supply.• Turn the rotary knob (1) for setting the heating feedtemperature all the way to the left.4.5.4 Adjusting the room thermostat or weathercompensator21Fig. 4.11 Setting a room thermostat or weather compensator• Set the room thermostats (1), weather compensatorsor radiator thermostat valves (2) as specified in theoperating manuals for these accessories.4.6 Status displays (for maintenance and servic-ing by the engineer)12Fig. 4.12 Status displaysThe status displays provide information on the operat-ing status of the unit.• Press the "i" button (2) to activate the statusdisplays.The display (1) then shows the individual status codes, e.g. "S. 4" for burner operation. The table below explainsthe most important status codes.In switching phases, for example on starting up againafter the flame was extinguished, the status message"S." briefly appears.• Press the "i" button (2) again to switch the displayback to normal mode.Operation 4