Fujitsu WATERSTAGE WOYG160LJL Maintenance Document page 68

Heating Curve
Line Nr
HC1 HC2
720 1020
721 1021
726 1026
Heating curve slope
Based on the heating characteristic, the controller
computes the fl ow temperature setpoint which will be
used for controlling the fl ow temperature in consideration
of atmospheric conditions. Diff erent settings can be
used to adapt the heating characteristic so that the
heating capacity, and therefore the room temperature,
will match the individual needs.
The colder the outdoor temperature, the greater the
extent to which the slope will modify the fl ow temperature
In other words, the slope should be corrected if the
room temperature shows a diff erence when the outdoor
temperature is low, but not when it is high.
• Increase the setting
The fl ow temperature is increased mainly when the
outdoor temperatures are low.
• Decrease the setting
The fl ow temperature is lowered mainly when the
outdoor temperatures are low.
Warning
The heating curve is adjusted in relation to a room
temperature setpoint of 20 °C. If the room temperature
setpoint is modifi ed, the fl ow temperature setpoint is
automatically recomputed. This will not modify the
setting and amounts to automatically adapting the curve.
70
60
50
40
30
20
20,0 15,0
- 68 -
Programming line
Heating curve slope
Heating curve displacement
Heating curve adaption
10,0 5,0
Outdoor Temperature (°C)
Heating curve displacement
The curve shift (off set) modifi es the fl ow temperature
in a general and even manner over the full range of
outdoor temperature. In other words, the shift should be
corrected when the room temperature is generally too
high or too low.
Heating curve adaption
Adaptation enables the controller to automatically
adapt the heating curve to the present conditions.
This correction may only be activated or deactivated.
In the latter case, there is no need to correct the slope
and shift.
Information
To ensure operation, the following requirements must be met:
- A room sensor must be connected.
- The "room infl uence" parameter must be set
between 1 % and 99 %.
The reference room (where the room sensor is installed)
must not contain adjusted thermostatic valves. If present
in the room, these valves must be fully open.
Operation of this function requires an adaptation period
which can take more or less time (approx. 1 week)
depending on weather conditions and on the stability of
the room temperature setpoint.
Heating Curves
2
1,75
1,5
1,25
1
0,75
0,0 -5,0
Waterstage / Maintenance Manual / 2105 - EN
0,5
0,25
-10,0 -15,0 -20,0