Fujitsu WOxK112LCT Design & Technical Manual page 69

Heating curve slope
Based on the heating characteristic, the controller
computes the flow temperature setpoint which will
be used for controlling the flow temperature in
consideration of atmospheric conditions. Different
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 flow
temperature. In other words, the slope should be
corrected if the room temperature shows a
difference when the outdoor temperature is low, but
not when it is high.
70
60
50
40
30
20
20,0 15,0
Heating curve displacement
The curve displacement (offset) modifies the flow
temperature in a general and even manner over the
full range of outdoor temperature. In other words,
the displacement should be corrected when the
room temperature is generally too high or too low.
Heating Curves
2
10,0 5,0 0,0
Outdoor Temperature (°C)
- (CS01 - 24) - - (CS01 - 24) -
- Increase the setting:
The flow temperature is increased mainly when
the outdoor temperatures are low.
- Decrease the setting:
The flow 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 modified, the flow
temperature setpoint is automatically recomputed.
This will not modify the setting and amounts to
automatically adapting the curve.
1,75
1,5
1,25
1
0,75
0,5
0,25
-5,0 -10,0 -15,0 -20,0
Control system