Vaillant sensoCOMFORT VRC 720f Operating And Installation Instructions page 73

MENU → SETTINGS → Installer level → Installation configuration
→ Max. DHW targ. flow temp..: °C
→ Max. temp. of cylinder 1: °C
→ Solar circuit
→ Collector temperature: °C
→ Solar pump:
→ Solar yield sensor: °C
→ Solar flow rate quantity:
→ Solar pump kick:
→ Solar circuit prot. function: °C
→ Min. collector temperature: °C
→ Purging time: min
→ Current flow rate: l/min
→ Solar cylinder 1
→ Switch-on differential: K
→ Switch-off differential: K
→ Maximum temperature: °C
→ Solar cylinder, bottom: °C
→ 2nd diff. temp control
→ Switch-on differential: K
→ Switch-off differential: K
→ Minimum temperature: °C
0020288151_00 sensoCOMFORT Operating and installation instructions
Setting the maximum buffer cylinder target flow temperature for the domestic hot water sta-
tion. The set maximum target flow temperature must be lower than the maximum flow tem-
perature for the heat generator.
If the maximum target flow temperature is set too low, the domestic hot water station cannot
reach the target cylinder temperature. While the target cylinder temperature is not reached,
the system control does not enable the heat generator for heating mode.
You can find the maximum flow temperature in the installation instructions for the heat gen-
erator.
Setting the maximum cylinder temperature. The solar circuit stops the cylinder charging as
soon as the maximum cylinder temperature has been reached.
Entering the volume flow to calculate the solar yield. If a solar pump station is installed, the
system control ignores that value that has been entered and uses the volume flow that is
supplied from the solar pump station.
The value 0 means the automatic recording of the volume flow.
Accelerated recording of the collector temperature. When the function is activated, the solar
pump is switched on for a short time and the heated solar fluid is transported to the measur-
ing point more quickly.
Setting the maximum temperature that must not be exceeded in the solar circuit. If the max-
imum temperature at the collector sensor is exceeded, the solar pump switches off to protect
the solar circuit against overheating.
Setting the minimum collector temperature that is required for the solar charging switch-on
differential. The differential temperature control can only start once the minimum collector
temperature has been reached.
Setting the time period during which the solar circuit is purged. The system control stops the
function once the specified purging time has elapsed, the solar circuit protection function is
active or the max. cylinder temperature has been exceeded.
Current volume flow of the solar pump station
Setting the differential value for starting the solar charging.
If the temperature difference between the cylinder temperature sensor at the bottom and the
collector temperature sensor is greater than the set differential value and the set minimum
collector temperature, the cylinder charging is started.
The differential value can be defined separately for two connected solar cylinders.
Setting the differential value for stopping the solar charging.
If the temperature difference between the bottom cylinder temperature sensor and the col-
lector temperature sensor is smaller than the set differential value and the set minimum col-
lector temperature, the cylinder charging is stopped. The switch-off differential temperature
value must be at least 1 K less than the set switch-on differential temperature value.
Set the maximum cylinder charging temperature for the cylinder protection.
If the temperature at the bottom cylinder temperature sensor is higher than the set maximum
cylinder charging temperature, the solar charging is interrupted.
The solar charging is only enabled again once the temperature at the bottom cylinder tem-
perature sensor has fallen by between 1.5 K and 9 K, depending on the maximum temperat-
ure. The set maximum temperature must not exceed the maximum permissible cylinder tem-
perature of the cylinder.
Setting the differential value for starting the temperature difference control, such as solar
heating support.
If the temperature difference between differential temperature sensor 1 and differential tem-
perature sensor 2 is greater than the set switch-on differential and the set minimum temper-
ature at differential temperature sensor 1, the differential temperature control is started.
Setting the differential value for stopping the temperature difference control, such as solar
heating support.
If the temperature difference between differential temperature sensor 1 and differential tem-
perature sensor 2 is lower than the set switch-off differential and the set maximum temperat-
ure at differential temperature sensor 2, the differential temperature control is stopped.
Setting the minimum temperature for starting the differential temperature control.
Product description 2
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