8 Operating and display functions
16
8.9
Buffer cylinder
8.9.1
Reading the top cylinder temperature in the
buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
Cyl. temp.: Top
–
You can use this function to read the current temperature
in the upper section of the buffer cylinder.
8.9.2
Reading the bottom cylinder temperature in
the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
Cyl. temp.: Bottom
–
You can use this function to read the current temperature
in the lower section of the buffer cylinder.
8.9.3
Reading the top cylinder temperature for
hot water in the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
DHW temp. sensor,top
–
You can use this function to read the current temperat-
ure in the upper section of the buffer cylinder's hot water
component.
8.9.4
Reading the bottom cylinder temperature
for hot water in the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
DHW tmp. sensor, bot.
–
You can use this function to read the current temperat-
ure in the lower section of the buffer cylinder's hot water
component.
8.9.5
Reading the top cylinder temperature for
heating in the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
Heat. temp. sens., top
–
You can use this function to read the current temperature
in the upper section of the buffer cylinder's heating com-
ponent.
8.9.6
Reading the bottom cylinder temperature
for heating in the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
Heat. temp. sens., bot.
–
You can use this function to read the current temperature
in the lower section of the buffer cylinder's heating com-
ponent.
8.9.7
Setting the max. target flow temperature in
the buffer cylinder
Menu
→
Installer level
→
System configuration
[
Buffer
cylinder
----]
→
Max.DHW fl.targ.temp.
–
You can use this function to set the buffer cylinder's max-
imum target flow temperature for the domestic hot wa-
ter unit. The max. target flow temperature that is to be
set must be lower than the max. flow temperature for the
heat generator. While the cylinder's set target temperat-
ure is not reached, the controller does not allow the heat
generator to go into heating mode.
You can find the maximum target flow temperature that the
heat generator can achieve in the installation instructions for
the heat generator.
If the max. target flow temperature that is set is too low, the
domestic hot water unit cannot provide the required hot wa-
ter temperature for the cylinder.
8.10
Solar circuit
8.10.1 Reading the collector temperature
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Collector temp.
–
You can use this function to read the current temperature
on the collector temperature sensor.
8.10.2 Reading the status of the solar pump
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Solar pump status
–
You can use this function to read the current status of the
solar pump (
On
,
Off
).
8.10.3 Reading the running time of the solar pump
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Solar pump runtime
–
This function allows you to read the measured operating
hours of the solar pump since start-up or since the last
reset.
8.10.4 Resetting the solar pump running time
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Reset runtime
–
You can use this function to reset the total operating
hours of the solar pump to zero.
8.10.5 Reading the value of the solar yield sensor
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Solar yield sensor
–
You can use this function to read the current value for the
solar yield sensor.
8.10.6 Setting the flow rate of the solar circuit
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Solar flow volume
–
In this function, enter the value for the volume flow. This
value is used to calculate the solar yield.
If a
VMS 70
is installed in the system,
VMS 70
supplies the
value for the volume flow. The controller ignores the value
that is entered in this function.
8.10.7 Activating the solar pump boost
Menu
→
Installer level
→
System configuration
→
[
Solar
circuit
----]
→
Solar pump boost
–
This function allows you to activate a pump kick for the
solar pump, in order to speed up the temperature record-
ing of the collector temperature.
Depending on the design, there is a time delay in some col-
lectors during calculation of the measured value for temper-
ature recording. With the
Solar pump boost
function, you
can reduce the time delay. When this function is activated,
Installation instructions
VRC 700/2
0020200781_01
