P32-EN – Subject to technical changes 04.11
15
Operating the System Controller
Client
4.4 Using the room sensor (accessory)
You use the room sensor to conveniently set the room
temperature and heating program (
figure on right
) without
having to go to the heating system.
If it is too cold, for example, even when the radiator valves
are open, you can increase the room temperature by
turning the adjustment wheel clockwise. If it is too warm,
you turn the adjustment wheel anti-clockwise.
Taking the room temperature into consideration:
The room influence factor was set to zero at the factory so
that the flow temperature is independent of the room tem-
perature and is only set by the heat curve depending on
the outside temperature. Any heat emission from external
heat sources (e.g. fireplace or sun exposure) is to be
offset by thermostat valves so that the room temperature
remains constant. However, the flow temperature remains
too high when compared to the outside temperature
resulting in more losses. You would save more energy if
you lowered the flow temperature to keep the room tem-
perature constant when there is an additional heat supply.
This can be accomplished with the room sensor. By setting
the room influence factor to values greater than 0%, you
can control the influence of the measured room tempera-
ture on the value of the flow temperature. This works only
if the valves on the radiators in the room are fully open.
If you set the room influence factor to the maximum value
of 90%, the flow temperature will basically be calculated
based on the measured room temperature. The flow tem-
perature is then influenced by external heat sources so
that rooms without room sensors may not be heated ade-
quately any longer, for example, because they are located
on the cooler north side of the house.
Setting the room influence factor
The room influence factor was set to 0% at the factory. To
save energy by altering the flow temperature, you will have
to change the room influence factor when there are room
sensors installed to 50% at the controller as follows:
•
Changing the room temperature
by plus/minus 5°C
•
Selection of the following heating programs:
- Standby mode . . . . . . . . . . . . .
- Night (lowering) mode . . . . . . . .
- Normal mode . . . . . . . . . . . . . .
- Automatic mode . . . . . . . . . . . .
Turn the adjustment wheel until you see the entry “HEAT
CURVE” of heating circuit 1 and press the adjustment
wheel.
Now turn the adjustment wheel to the entry “Room
influenc: 0%”. Press the adjustment wheel and set the
desired value by turning the adjustment wheel. Press the
adjustment wheel once at the end to save the value.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
HEAT CURVE
BACK
Room Influenc: 50%
Increasing
on Start:
0%
At the pointer position
set the room influence
factor
You need to adjust the controller after installation
of the room sensor. . . . . . . . . . . . . . . . .
page 27
.
