Heating Curve/Cooling Curve - Viessmann VITOTRONIC 200 Operating Instructions Manual

Central heating/central cooling
Heating system with heating water buffer...
Note
Between the time phases, the heating water buffer
■
cylinder is not heated; only the frost protection for the
heating water buffer cylinder is active.
When setting the time program, please bear in mind
■
that your heat pump requires some time to heat the
heating water buffer cylinder to the required temper-
ature.
Operating status for charging the heating water
buffer cylinder
"Top"
■
The top section of the heating water buffer cylinder is
heated to the highest set flow temperature for all
connected heating circuits. A smaller volume of heat-
ing water is then available.
"Standard"
■
The entire volume in the heating water buffer cylin-
der is heated to the highest set flow temperature for
all connected heating circuits.
The set flow temperature of a heating circuit results
from the heating curve, the outside temperature and
the required room temperature.

Heating curve/cooling curve

Further information can be found in chapter
"Terminology" in the appendix.
Setting the curves for heating/cooling
Factory settings:
Heating curve:
■
"Slope": 0.6
"Level": 0
Cooling curve:
■
"Slope": 1.2
"Level": 0
Advanced menu:
1.
2. "Heating" or "Heating/cooling"
3. If necessary, press / for the required heating/cool-
ing circuit.
4. "Heating curve"
or
"Cooling curve"
5. "Slope" or "Level"
6. Set the required value.
Note
Tips on when and how to change the heating curve
slope and level are displayed by pressing ?.
22
(cont.)
"Fixd value"
■
The entire volume in the heating water buffer cylin-
der is charged to a fixed temperature.
Factory setting: 50 °C, your heating contractor may
have adjusted these values.
You can utilise this operating status to heat up the
heating water buffer cylinder with economical night
tariff power, for example.
Note
Above a certain outside temperature, the heating
water buffer cylinder will no longer be charged, even
when in "Fixd value" operating status. The stop limit
can be adjusted by your local heating contractor.
Example: Changing the heating curve slope to 1.1
A graph clearly shows the change in the heating 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
Fig. 17
Depending on the different outside temperatures
(shown on the horizontal axis), the assigned set flow
temperatures for the heating circuit are highlighted in
white.
HC1
55 °C
-20 -30
1.1
(