Viessmann Vitocal 350-A Installation And Service Instructions Manual page 199

Maximum set flow temperature
The set flow temperature, which is cal-
culated from the outside temperature
and the heating curve, is limited by this
parameter to a maximum set flow tem-
perature. For the heating circuit without
mixer (A1), limited modulation properties
mean the heat pump regulates to the
return temperature. The set return tem-
perature is calculated from the set flow
temperature minus 5 K.
Note
Since the heat pump control unit only
limits the set value with this parameter,
always install an on-site temperature lim-
iter in the flow of an underfloor heating
circuit, to restrict the maximum temper-
ature.
Menu
■ "Device settings"
■ "Programming"
■ "Heating circuit 1"
or
"Heating circuit 2"
or
"Heating circuit 3"
■ "Max. flow temperature"
Delivered condition
Setting
(cont.)
40 °C
10 to 70 °C
Control settings, heating circuits
199