Setting The Heating Curve - Nibe F470 Installer Manual

Alarm
If an alarm occurs, LED
When one or more alarms are active, this is indicated
according to the following table. If more than one alarm
is active, the one with the highest priority is displayed.
Cause / Action
The rotor is blocked. Wait or release the rotor shaft.
Supply voltage too low. Check the supply voltage.
Electrical fault. Check the supply voltage or replace
the circulation pump.
40 Chapter 6 | Commissioning and adjusting
shines red.
Setting the heating
curve
In menu Curve, heating
for your house. The task of the curve is to give an even
indoor temperature, regardless of the outdoor temper-
ature, and thereby energy-efficient operation. Based on
this curve, the F470 determines the temperature of the
water to the climate system (the supply temperature)
and thus the indoor temperature.
CURVE COEFFICIENT
The slope of the heating curve indicates how many de-
grees the supply temperature is to be increased/reduced
when the outdoor temperature drops/increases. A
steeper slope means a higher supply temperature at a
certain outdoor temperature.
Supply temperature Framledningstempereratur
(°C)
80
70
Steeper curve slope
60
50
40
30
20
0 10 0
The optimum curve slope depends on the climate con-
ditions in your location, whether the house has radiators,
fan coils or underfloor heating and how well insulated
the house is.
The heating curve is set when the heating installation
is installed, but may need adjusting later. Normally, the
curve will not need further adjustment.
CURVE OFFSET
An offset of the heating curve means that the supply
temperature is changed by the same amount for all
outdoor temperatures, e.g. a curve offset of +2 steps
increases the supply temperature by 5 °C at all outdoor
temperatures.
you can view the heating curve
-10 -20 -30 -40
Outdoor temperature
Utetemperatur
(°C)
NIBE F470