6 Heating circuit
Time switching
In this operating mode, the timed switch-over bet-
ween
Heating mode
and
Reduced mode
is defined.
You can enter the times for heating mode
Daily
or
In
blocks
.
Usage example:
Heating mode
should be active
during the day, but be changed to
Reduced mode
at
night.
Switch off heating circuit
The heating circuit pump and heating circuit mixing
valve are switched off. The anti-freeze function for the
heating circuit is enabled (i.e. the heating circuit
pump is switched on whenever the outside tem-
perature drops below the
anti-freeze temperature
).
Holiday mode
Holiday mode deactivates the active operating mode
for the entered duration.
activates the frost protection mode for the hea-
ting circuit for the duration of the holiday.
activates the reduced mode for the heating cir-
cuit for the duration of the holiday.
This icon indicates activated holiday mode in
the
Heating circuit
screen.
6.1.2 General settings
Cutoff temperature
If the outside temperature exceeds the value set
here, the heating circuit pump is switched off and the
heating circuit mixing valve closes.
Cutoff temperature for heating mode: 18°C
Cutoff temperature for reduced mode: 5°C
i
This means: the heating circuit is normally
automatically switched off during the summer
month due to the outdoor temperature.
You can also switch the heating circuit off
manually (=operating mode: Switch off hea-
ting circuit).
Anti-freeze temperature
If the outside temperature drops below the value set
here, the heating circuit pump is switched on.
Buffer difference
The burner starts when the
tank temperature top
falls
below the
required flow temperature
minus the
buffer
difference
.
Example:
- Current required flow temperature = 50°C
- Buffer difference = 5°C
The burner starts as soon as the
tank temperature
top
< 45°C.
A negative buffer difference value is added, i.e. the
burner starts earlier.
Example:
- Current required flow temperature = 50°C
- Buffer difference = - 5°C
The burner starts as soon as the
tank temperature
top
< 55°C.
Outside temperature delay
The delay set here is used to determine an average
value for the outside temperature (= Average outside
temperature).
The heating circuit pump switches on if the Average
temperature and the Current outside temperature fall
below the cutoff temperature (within the heating
period), or below the reduced mode cutoff tem-
perature (outside the heating period).
The heating circuit pump switches off again as soon
as the current outside temperature rises above the
value of the cutoff temperature.
Heating circuit name
The heating circuit can be given an individual name.
6.1.3 Heating curve
The heating circuit flow temperature is controlled by
the heating circuit operating mode
and by the
outside temperature. The heating curve represents
the relationship between these two temperatures. I.e.
the control uses the outside temperature to calculate
the temperature (=
calculated required flow tem-
perature
) with which the heating circuit is supplied.
In
heating mode
the heating curve for heating mode
4
(red) is used.
In
reduced mode
the heating curve for reduced mode
5
(= heating curve for heating mode minus
reduction
)
is used.
The heating curve must be adapted to suit each buil-
ding and its heating system.
Operation manual
pelletelegance
21
