Heating Curve
Line N° PROGRAMMING LINE
HC1 HC2
720 1020 Heating curve slope
721 1021 Heating curve displacement
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
•
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
Heating curve displacement
The curve shift (offset) modifies the flow 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
20
30
40
50
60
70
-20,0
-15,0
-10,0
-5,0
0,0
5,0
10,0
15,0
20,0
Outdoor Temperature (°C)
Hea
ting
F
low
Te
m
pera
ture
(°
C
)
0,25
0,5
0,75
1
1,25
1,5
1,75
2
Heating Curves
Maintenance document "1792 - EN"
Split system single phase type
- 64 -