Change The Heating Curve - Viessmann VITOCAL 222-G Operating Instructions Manual

Central heating/cooling
Setting the time program for heating/cooling
"Fixed val."
Central heating is implemented, inde-
pendent of the outside temperature, with
the maximum permissible flow tempera-
ture; cooling with the minimum flow tem-
perature.

Change the heating curve

Your system's heating characteristics
are affected by the slope and the level of
the selected heating curve. Further
information about the heating curve can
be found under "Terminology" on
page 52.
Note
No heating curve is stored if room tem-
perature-dependent control was instal-
led for the selected heating/cooling cir-
cuit. Your local heating contractor will
gladly provide you with further details in
this connection.
Factory settings:
■ Slope: 0.6
■ Heating curve level: 0
■ Standard room temperature (set
value): 20 ºC
■ Reduced room temperature (set
value): 16 ºC
Extended menu:
1.
2. "Heating" or "Heating/cooling"
3. Select the heating circuit, if neces-
sary.
4. "Heating curve"
22
(cont.)
Factory settings:
■ Max. flow temperature for heat-
ing: 60 °C
■ Min. flow temperature for cooling:
10 °C
Your heating contractor may have adjus-
ted these values.
5. "Slope" or "Level"
Note
Tips on when and how you change the
heating curve slope and level are dis-
played by pressing ?.
6. Set the required value.
Example:
Changing the heating curve slope to
1.1.
A diagram shows the change in the heat-
ing curve as soon as you alter the value
for the slope or level.
Heating curve
100 °C
49 °C
43 °C
35 °C
20 10 0 -10
Slope
Change with
Depending on various outside tempera-
tures (shown on the horizontal axis), the
assigned set flow temperatures for the
heating circuit are highlighted white.
HC1
55 °C
-20 -30
1.1
(