7
exaMPle 3: sPlit
Splitpoint 0° selected
with heating curve part 1
selected to 1.1 and heating
curve part 2 selected to
0.7 will increase flow temp
from 38° to 42° at out-
door temp 0° compared to
simple heating curve 0.9
exaMPle 4: Max/Min
sPlit
Splitpoint 0° selected with
heating curve part 1 selec-
ted to 1.1 and heating curve
part 2 selected to 0.7 will
increase flow temp from 38°
to 42° at outdoor temp 0°
compared to simple heating
curve 0.9
Max limitation 50°C and min
limitation 25°C added.
The following settings can be used for parallel translation of the characteris-
tic for certain time periods such as daytime and nighttime mode.
Menu 5.4 day correction = Parallel translation of the characteristic
The day correction produces a parallel translation of the heating characteristic during
the daytime operating hours, since depending on the outdoor temperature it is pos-
sible that the building may not be optimally heated with the set characteristic. If the
characteristic is not optimised, the following situation may occur:
in hot weather - the spaces are too cold
in cold weather - the spaces are too hot
In this case, one should gradually reduce the characteristic slope in steps of 0.2, each
time raising the day correction by 2-4 °C.
This procedure can be repeated several times as needed.
Setting range: from -10°C to 50°C / / Default: 5°C
Menu 5.5 night correction = Parallel translation of the characteristic
The night correction produces a parallel translation of the heating characteristic
during the nighttime operating hours. If a negative value is set for the night correction,
the reference fl ow temperature is lowered accordingly during the nighttime operating
hours. In this manner, primarily at night, but also during the day when no-one is at
home, the room temperature is lowered, thus saving energy.
Example: A day correction of +5°C and a night correction of -2°C produces a refe-
rence flow temperature in nighttime operation that is 7°C lower.
Setting range: from -30°C to 30°C / / Default: -2°C
Menu 5.6 coMfort teMPerature boost = Parallel translation of the
characteristic
The comfort temperature boost is added to the set day correction. In this manner it
is possible to carry out quick heating and/or a higher temperature in the living spaces
at a certain time each day.
Setting range: from 0°C to 15°C / / Default: 0°C = off
Menu 5.7 reference/actual -
Permissible reference value undershoot of the heating value.
Settings range -10°C to -2 / Default: -2°C
Menu 5.8 reference/
Permissible reference value overshoot of the heating value.
Settings range 2°C to 20 / Default: 2°C
Menu 6 is activated when Heating circuit 2 is selected in menu 15.7.2
Note: Pump is activated when actual flow temp < target flow 2.
Menu 6.1 s/W day
see Menu 5.1
Menu 6.2 s/W night
see Menu 5.2
Menu 6.3 curVe
see Menu 5.3 including curve examples.
Menu 6.4 day correction
see Menu 5.4
Menu 6.5 night correction
see Menu 5.5
Menu 6.6 coMfort teMP bost
see Menu 5.6
Menu 7 is activated when Dom. Hot water is selected in menu 15.7.2
Menu 7.1 hot Water MiniMuM
Minimum domestic hot water temperature outside of the operating times.
Settings range 10°C to 80 / Default: 45°C
Menu 7.2 dhW target
Minimum DHW temperature during operating hours.
Settings range 10°C to 80°C / Default: 45°C
Menu 4.3 heat circuit reference
If operating mode “Reference value” is selected, (Menu 4.1), the reference flow tem-
perature has to be set here, regardless of the curve/outdoor temperature.
Settings range: 10 °C to 75 °C, Default: 30 °C
Menu 4.4 14 day reference
If operating mode “14 day reference value” is selected (Menu 4.1), the reference flow
temperature for each of the 14 days can be set here.
In the first menu 4.4.1 the starting time of the program is shown. To start the program,
hit restart.
Set parameters for the heating circuit.
Hitting “restart” again will reset the 14 day reference program and start it at day 1.
Menu 4.5 doMestic hot Water
Auto = The Domestic Hot Water function is activated according to the schedule in
menu 3.5.
On =
The Domestic Hot Water function is always on.
Off =
The Domestic Hot Water function is always off
Menu 5.1 s/W day = suMMer/Winter changeoVer in daytiMe Mode
If this value is exceeded at outdoor sensor during the daytime mode times, the control-
ler automatically switches the heating circuit off = Summer mode.
If the outdoor temperature drops below this value, the heating circuit is switched on
again = Winter mode.
Setting range: from 0°C to 30°C / default setting: 18°C
In addition to the operating times in normal daytime operation, this setting is also
valid for times with activated comfort temperature boost.
Menu 5.2 s/W night = suMMer/Winter changeoVer in nighttiMe Mode
If this value is exceeded at outdoor sensor during the nighttime mode times, the con-
troller automatically switches the heating circuit off = Summer mode.
If the outdoor temperature drops below this value, the heating circuit is switched on
again = Winter mode.
Settings range: 0°C to 30°C / Default: 12°C
Menu 5.3 curVe = sloPe of the characteristic heating curVe
The characteristic curve is used to control the heat dissipation of the heating circuit
relative to the outdoor temperature.
The demand for heat is different due to differences in the type of building/insulation/
type of heating/outdoor temperature. For this reason the controller can make use of
a normal straight curve (Setting simple) or a split curve (Setting split).
In the simple setting the curve can be adjusted with the help of the graphic diagram.
The slope is changed, and the calculated reference flow temperature is displayed
for -20 °C.
If the split mode is selected, the characteristic curve is adjusted in 3 steps. First the
standard slope has to be set, after that the split point and finally the steepness of the
curve after the split. While adjusting the curve the steepness of the slope and the
calculated reference flow temperature for -20 °C outdoor temperature is displayed.
Splited curve is often selected to compensate.
Settings range:
Characteristic curve : simple or split / Default: simple
Slope : 0.0...3.0 / Default: 0.8
Splitpoint at outdoor temp.: +10°C...-10°C
Angle: differs, depends on steepnes and split point
The diagram shows the influence of the selected characteristic curve steepness
(standard curve) on the calculated reference flow temperature of the heating circuit.
The correct curve is appointed by setting the intersection point of the calculated
maximum flow temperature and the minimum outdoor temperature.
Maximum calculated flow temperature 60°C at minimum outdoor temperature accor-
ding to heat demand calculation -12°C.
The intersection results in a slope of 1.2.
exaMPle 1: siMPle
exaMPle 2: sPlit
Splitpoint 0° selected with
heating curve part 1 selec-
ted to 1.0 and heating curve
part 2 selected to 0.8 will
increase flow temp from 38°
to 40° at outdoor temp 0°
compared to simple heating
curve 0.9
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
+15
+10
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
+15
+10
+5
−5
+5
+0 °C
+0 °C
+0 °C
+0 °C
Da
y cor
rection
Flo
w t
em
per
atur
e °
C
Characteristic curve
Outdoor temperature ° C
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
+15
+10
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
+15
+10
+5
−5
+5
+0 °C
+0 °C
+0 °C
+0 °C
Flo
w t
em
per
atur
e °
C
Characteristic curve
Outdoor temperature ° C
Da
y cor
rection
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
+15
+10
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
+15
+10
+5
−5
+5
+0 °C
+0 °C
+0 °C
+0 °C
Characteristic curve
Flo
w t
em
per
atur
e °
C
Outdoor temperature ° C
Da
y cor
rection
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
110
20
10
-10 -12
0
-20
+15
+10
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
-30
-40
-50
+15
+10
+5
−5
20
30
40
50
60
70
80
90
100
20
10
-10 -12
0
-20
+15
+10
+5
−5
+5
+0 °C
+0 °C
+0 °C
+0 °C
Flo
w t
em
per
atur
e ° C
Characteristic curve
Outdoor temperature ° C
Da
y cor
rection
hc (heating circuit) 2
settings, Menu 6
dhW settings, Menu 7
hc (heating circuit)
settings, Menu 5
