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9.3.10 Holiday - recooling
Attempts to reduce, or even to avoid, the system standstill (stagnation)
times at high temperatures. To do this, at night the storage tank – or
the second-priority storage tank if 2 storage tanks are present – is dis-
charged as far as possible to the set minimum temperature, if the stor-
age tank temperature during the day was 10 K below the set maximum
temperature.
Stagnation occurs when not enough hot water is removed form the
system during an absence (holiday).
Notes
The following applies to this function:
• Only activate if you intend to be absent for an extended
period.
• Deactivate this after returning from a holiday in order to avoid
an unnecessary waste of energy via the collector circuit.
• This function cannot be activated in systems with swimming
pools.
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Minimum storage tank temperature 0 °C 95 °C 35 °C
9.3.11 Active cooling
Switches an additional cooler into the solar circuit when one of the fol-
lowing conditions is satisfied:
• The temperature of the storage tank – or of the second-priority
storage tank in the case of 2 storage tanks – lies 10 K below the set
maximum temperature.
• Holiday recooling is performed at night.
Application examples: Areas with strong solar irradiation, avoidance of
stagnation.
Display Characteristic min. max.
Factory
setting
Activation on, oFF
oFF
Output (switching-in of additional
cooler)
free output R1/R2/R
S
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