Fujitsu WATERSTAGE 112 Maintenance Document page 75

Heat Pump, Split System, Single Service, 3 phase
Heating Curve
Line no.
HC1 HC2
720 1020
721 1021
726 1026
Heating curve slope:
Based on the heating characteristic, the controller
computes the flow temperature setpoint which will be
used for controlling
consideration of atmospheric conditions. Different
settings can be used
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
Maintenance Document 1394-1
Programming line
Heating curve slope
Heating curve displacement
Heating curve adaptation
the flow temperature
to adapt the heating
10,0 5,0
Outdoor Temperature (°C)
Increase the setting:
o
The flow temperature is increased mainly when the
in outdoor temperatures are low.
Decrease the setting:
o
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 Curves
2
1,75
1,5
1,25
1
0,0 -5,0
0,75
0,5
0,25
-10,0 -15,0 -20,0
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