Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 124

Function description
Control functions
Temperature profile 6 (delivered condition): Code "F1:6"
Raising the reduced room temperature
During operation with reduced room
temperature, the reduced set room
temperature can be automatically
raised subject to the outside tempera-
ture. The temperature is raised in
accordance with the selected heating
curve, but no higher than the set stan-
dard room temperature.
124
(cont.)
The outside temperature limits for the
start and end of the temperature rais-
ing can be adjusted via coding
addresses "F8" and "F9".