Menu 5.1 S/W Day = Summer/Winter Changeover In Daytime Mode - ESBE 90C-2 series Handbuch

HC (HEATING CIRCUIT) SETTINGS, MENU 5

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 controller automatically swit-
5. Exit settings
ches the heating circuit off = Summer mode.
5.1 S/W day 18ºC
If the outdoor temperature drops below this value, the
5.2 S/W night 12ºC
heating circuit is switched on again = Winter mode.
▲ ▼ Setting range: from 0°C to 30°C / default setting: 18°C
Info
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 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.
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 (stan-
dard 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 according
to heat demand calculation -12°C.
The intersection results in a slope of 1.2.
EXAMPLE 1: SIMPLE
Characteristic curve
90
80
70
60
50
40
30
20
20
EXAMPLE 2: SPLIT
Characteristic curve
90
Splitpoint 0° selected with
heating curve part 1 selected
80
to 1.0 and heating curve part
2 selected to 0.8 will increase
70
flow temp from 38° to 40° at
60
outdoor temp 0° compared to
simple heating curve 0.9
50
40
30
20
20
Characteristic curve
90
EXAMPLE 3: SPLIT
Splitpoint 0° selected with
80
heating curve part 1 selected
70
to 1.1 and heating curve part
2 selected to 0.7 will increase
60
flow temp from 38° to 42° at
outdoor temp 0° compared to
50
simple heating curve 0.9
40
30
20
20
+15
+10
+5
+0 °C
−5
10 0 -10 -12 -20
Outdoor temperature ° C
+15
+10
+5
+0 °C
−5
10 0 -10 -12 -20
Outdoor temperature ° C
+15
+10
+5
+0 °C
−5
10 0 -10 -12 -20
Outdoor temperature ° C
15