Nibe SMO S40 - Page 32

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.
20
0 10 0 -10 -20 -30 -40
30
40
50
60
70
80
Framledningstempereratur
(°C)
Utetemperatur
(°C)
Offset heating curve
Supply temperature
Outdoor temperature
SUPPLY 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.
20
0 10 0 -10 -20 -30 -40
30
40
50
60
70
80
Framledningstempereratur
(°C)
Utetemperatur
(°C)
Maximum value
Supply temperature
Outdoor temperature
Minimum value
Caution
With underfloor heating systems, the maxim-
um supply temperature is normally set
between 35 and 45 °C.
Check the max floor temperature with your
floor supplier.
ADJUSTMENT OF CURVE
Climate system 1
Outdoor temp °C
Supply temp °C
Min supply temperature
Max supply temperature
Curve offset
Curve coefficient
Climate system
Max
Min
1.
Select the climate system (if more than one) for
which the curve is to be changed.
2.
Select curve slope and curve offset.
3.
Select max and min supply temperature.
Caution
Curve 0 means that own curve is used.
Settings for own curve are made in menu
1.30.7.
TO READ OFF A HEATING CURVE
1.
Drag in the circle on the axis with outdoor temperat-
ure.
2.
Read off the value for supply temperature in the
circle on the other axis.
NIBE SMO S40Chapter 6 | Commissioning and adjusting32