Operating and display functions 7
0020237057_01 Installation instructions
19
Menu
→
Installer level
→
System configuration
[
HEAT-
ING1
----]
→
Current cyl. temp.
–
You can use this function to read the measured cylinder
temperature.
7.9.5
Reading the status of the cylinder charging
pump
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Cyl. charging pump
Menu
→
Installer level
→
System configuration
[
HEAT-
ING1
----]
→
Cyl. charging pump
–
You can use this function to read the status of the cylin-
der charging pump (
On
,
off
).
7.9.6
Reading the status of the circulation pump
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Circulation pump
–
You can use this function to read the status of the circula-
tion pump (
On
,
off
).
7.9.7
Defining the day for the anti-legionella
function
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Anti-legionella day
–
You can use this function to define whether the anti-le-
gionella function is carried out daily or on a specific day.
If the anti-legionella function is activated, the water in the
domestic hot water circuit is automatically heated to the tar-
get cylinder temperature of 70 °C (with 5 K hysteresis) at the
scheduled times. The circulation pump is activated.
The function is terminated automatically when the cylinder
temperature sensor measures a temperature of > 60 °C for
more than 60 minutes, or after a period of 120 minutes has
elapsed, to avoid getting "stuck" in this function if water is
drawn simultaneously.
Factory setting =
off
means there is no Anti-legionella func-
tion.
If the
Days away from home scheduling
function is active,
no anti-legionella function is carried out during these days.
The anti-legionella function is reactivated directly on the first
day after the
Days away from home scheduling
function
has expired and is carried out at the scheduled times.
If a heat pump is installed in the heating installation, the sys-
tem control activates the back-up boiler for the anti-legionella
function.
7.9.8
Defining the time for the anti-legionella
function
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Anti-legionella time
–
You can use this function to define the time for executing
the Anti-legionella function.
When the time is reached on the defined day, the function
starts automatically.
If the
Days away from home scheduling
function is active
at the same time, the anti-legionella function is not carried
out.
7.9.9
Setting the hysteresis for cylinder charging
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Cyl. boost hysteresis
–
If a heat pump is connected, you can use this function to
set a hysteresis for the cylinder charging.
For example: If the desired temperature is set to 55 °C and
the temperature difference for cylinder charging is set to 10
K, cylinder charging begins as soon as the cylinder temper-
ature drops to 45 °C.
7.9.10 Defining the offset for charging the
domestic hot water cylinder
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Cylinder boost offset
–
If a heat pump is connected, you can use this function to
specify an offset value (K) for the set hot water temperat-
ure. The domestic hot water cylinder is then charged to
the flow temperature, which equates to the total of the set
hot water temperature and this offset value.
7.9.11 Setting the maximum cylinder charging
time
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Max. cyl. charg. time
–
If a heat pump is connected, you can use this function
to set the maximum charge time for which the cylinder is
charged without interruption.
The
off
setting means that there is no time limit for the cylin-
der charging time.
7.9.12 Setting the anti-cycling time for the hot
water demand
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
DHW req. anti-cy time
–
If a heat pump is connected, you can use this function to
set a time period in which cylinder charging is blocked.
If the maximum cylinder charging time is reached but the do-
mestic hot water cylinder connected has not yet reached its
set target temperature, the
DHW req. anti-cy time
function
takes effect.
7.9.13 Defining the overrun time for the cylinder
charging pump
Menu
→
Installer level
→
System configuration
[
DHW cir-
cuit
----]
→
Ch. pump overrun time
–
You can use this function to define an overrun time for
the cylinder charging pump. The high flow temperature
required for cylinder charging continues to be delivered
to the cylinder as far as possible by means of the charge
pump overrun before the heating circuits (in particular,
the burner circuit) are enabled again for the heating func-
tion.
When the set domestic hot water temperature (cylinder char-
ging) is reached, the system control switches off the heat
generator. The overrun time for the cylinder charging pump
starts. The system control automatically deactivates the cyl-
inder charging pump after the overrun time has elapsed.
