Nibe F1155 Series Installer Manual page 35

You can select heating or cooling in the
The next menu (heating curve/cooling curve) shows the
heating and cooling curves for your house. The task of
the curve is to give an even indoor temperature, regard-
less of the outdoor temperature, and thereby energy
efficient operation. It is from these heat curves that the
heat pump's control computer determines the temper-
ature of the water to the system, the supply temperature,
and therefore the indoor temperature. Select the curve
and read off how the supply temperature changes at
different outdoor temperatures here. The number to the
far right of "system" displays which system you have se-
lected the heating curve/cooling curve for.
Curve coefficient
The slopes of the heating /cooling curves indicate how
many degrees the supply temperature is to be in-
creased/reduced when the outdoor temperature
drops/increases. A steeper slope means a higher supply
temperature for heating or a lower supply temperature
for cooling at a certain outdoor temperature.
Supply temperature Framledningstempereratur
(°C)
80
70
60
50
40
30
0
0 10 0
The optimum slope depends on the climate conditions
in your location, if the house has radiators or under floor
heating and how well insulated the house is.
The curve is set when the heating installation is installed,
but may need adjusting later. Normally, the curve will
not need further adjustment.
Caution
When making fine adjustments of the indoor
temperature, the curve must be offset up or
down instead, this is done in menu 1.1
ature .
Curve offset
An offset of the curve means that the supply temperature
changes by the same amount for all the outdoor temper-
atures, e.g. that a curve offset of +2 steps increases the
supply temperature by 5 °C at all outdoor temperatures.
Flow line temperature– maximum and
minimum values
Because the flow line temperature cannot be calculated
higher than the set maximum value or lower than the
set minimum value the heating curve flattens out at
these temperatures.
NIBE F1155
curve menu.
Steeper curve slope
-10 -20 -30 -40
Outdoor temperature
Utetemperatur
(°C)
temper-
Caution
Under floor heating systems are normally
flow line temperature
45 °C.
Must be restricted with underfloor cooling min.
flow line temp. to prevent condensation.
Check the max temperature for your floor with
your installer/floor supplier.
The figure at the end of the curve indicates the curve
slope. The figure beside the thermometer gives the curve
offset. Use the control knob to set a new value. Confirm
the new setting by pressing the OK button.
Curve 0 is an own curve created in menu 1.9.7.
To select another curve (slope):
NOTE
If you only have one climate system, the num-
ber of the curve is already marked when the
menu window opens.
1. Select the climate system (if more than one) for
which the curve is to be changed.
2. When the climate system selection has been con-
firmed, the curve number is marked.
3. Press the OK button to access the setting mode
4. Select a new curve. The curves are numbered from
0 to 15, the greater the number, the steeper the
slope and the greater the supply temperature. Curve
0 means that own curve
5. Press the OK button to exit the setting.
To read off a curve:
1. Turn the control knob so that the ring on the shaft
with the outdoor temperature is marked.
2. Press the OK button.
3. Follow the grey line up to the curve and out to the
left to read off the value for the supply temperature
at the selected outdoor temperature.
4. You can now select to take read outs for different
outdoor temperatures by turning the control knob
to the right or left and read off the corresponding
flow temperature.
5. Press the OK or Back button to exit read off mode.
Chapter 6 |
max
set to between 35 and
(menu 1.9.7) is used.
Commissioning and adjusting 35