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Sanitary water temperature (HWS temperature)
Temperature in the sanitary boiler (HWS) can be set in the range of 40 °C to 70 °C. This menu item is
visible if the output for the sanitary boiler is activated and if the temperature sensor for the storage tank
is mounted.
Increasing and decreasing the temperature is done in the same way as changing the temperature in
the boiler. After selecting the desired value to save, confirm by pressing
OK (SET key).
The choice of sanitary water temperature is very important, it depends not only on the type of consumer,
but is also limited to legionella preservation conditions. Legionella is a bacteria causing the so-called
legionnaire disease
(one type of pneumonia), which can be deadly. Legionela are propagated at
temperatures between 32 ° C and 42 ° C and can be destroyed at temperatures of about 60°C to 70°C.
In accumulation systems, it is necessary at least to achieve such temperatures for a short time, in order
to destroy legionnaires (thermal disinfection). Thermal disinfection is to be performed once a week, for
about one hour.
The boiler has an automatic anti-legionela function and it should be activated if a
sanitary boiler is connected.
Heating circuit
Option
heating circuit
is set during the boiler installation.
• Heating circuit 1 is used for water tank pump or heating circuit pump 1.
• Heating circuit 2 is used for sanitary water tank pump or heating pump 2.
• Heating circuit 3 can only be used for the heating circuit pump 3.
The output for the mixing valve motor can only be assigned to one heating circuit.
Setting the temperature in the heating circuit:
