21VRT 360 Operating Manual
Operation 4
Display Required steps
One-time recharging /
Cylinder Boost
This function allows you to fill
the cylinder, regardless of the
set timer programme. Press the
special function button four
times. The once-only cylinder
filling symbol appears in the
display and the function is acti-
vated after ten seconds.
If you want to deactivate the
function early, just press the
F button.
Display Required steps
Holiday function
The holiday function deactivates
the room thermostat, but not
the frost protection function.
The hot water and circulation
pump are also deactivated. Press
the special function button five
times - the holiday function
symbol flashes in the display.
The set value for the number of
days‘ holiday also flashes.
Turn the dial until the required
number of days‘ holiday
appears. After 10 seconds the
function is activated and the
mode is set to OFF for the
selected period (see 4.1).
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