Altering Settings Of The Heating System - Viessmann Vitotronic 200 KW2 Operating Instructions Manual

Altering Settings of the Heating System

Slope
Shift
The heating pattern of your boiler is influenced by the outdoor temperature and the
settings of the "shift" and "slope" of the "heating curve". You can change the
settings if the room temperature has not met your requirements over a certain
period of time.
After changing the settings, please observe the difference in the heating pattern
over a sufficiently long period before altering the settings again.
Short-term changes in the room temperature are carried out with the "
knob or " " button (see "Altering the Room Temperature").
Heating curves represent the relationship between the outdoor temperature and the
boiler water or supply temperature. Put simply: The lower the outdoor temperature,
the higher the boiler water or supply temperature.
In the factory default settings, the slope is set to 1.4 and the shift to 0.
The heating curves shown are based on the following settings:
"Shift of heating curve"
With a different shift setting, the curves are shifted parallel in a vertical direction.
"Normal room temperature" = approx. 68 ºF / 20 ºC.
Altering the heating pattern by adjusting the heating curve
1. Open the cover on the programming
unit. Select heating circuit, activating
or or .
2. for "Slope".
or
for "Shift".
to enter the values.
3. /
4. to confirm;
the display changes and
shows the boiler water
temperature.
5. Close the hinged cover on the
programming unit.
= 0
The slope of the heating curve is
normally within the range marked
for underfloor heating systems,
for modulating heating systems,
for heating systems with tempera-
tures over 167 ºF / 75 ºC
Examples
Well insulated house in protected
location (radiator heating):
Slope = 1.2
House in exposed location or with
old heating system (radiator heat-
ing):
Slope = 1.6
As a guide, please refer to the table
headed "Alter heating pattern if..." on
page 26.
Other Settings
" selector
25