Vaillant ecoTEC SERIES Operating Manual - page 13
13
Operating manual ecoTEC 0020052777_00
4.5.2 Setting the flow temperature (using a con-
troller)
1
Fig. 4.9 Setting the flow temperature using a controller
If 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 the
controller (for information, see its operating manual).
4.5.3 Switching heating mode off (summer mode)
1
Fig. 4.10 Switching off heating (summer operation)
You can switch off the heating in summer without
switching off the hot water supply.
• Turn the rotary knob (
1
) for setting the heating feed
temperature all the way to the left.
4.5.4 Adjusting the room thermostat or weather
compensator
2
1
Fig. 4.11 Setting a room thermostat or weather compensator
• Set the room thermostats (
1
), weather compensators
or radiator thermostat valves (
2
) as specified in the
operating manuals for these accessories.
4.6
Status displays (for maintenance and servic-
ing by the engineer)
1
2
Fig. 4.12 Status displays
The status displays provide information on the operat-
ing status of the unit.
• Press the "
i
" button (
2
) to activate the status
displays.
The display (
1
) then shows the individual status codes, e.
g. "
S. 4
" for burner operation. The table below explains
the most important status codes.
In switching phases, for example on starting up again
after the flame was extinguished, the status message
"
S.
" briefly appears.
• Press the "
i
" button (
2
) again to switch the display
back to normal mode.
Operation 4