26
The heating circuit changes to the status OFF.
✎ See chapter “6 Using the heating system”, section
“6.10 Structure of the menus”, paragraph “10 - Heating circuit 1”.
A
NTI-SEIZING PROTECTION For the boiler status OFF or NO DEMAND, the hot water pump and
heating circuit mixer are activated every 7 days to help prevent the
pumps from seizing.
D
OMESTIC HOT WATER Depending on the installed hydraulic system, the hot water supply
can be delivered via a combination accumulator or via an external
hot water tank.
Only if a hydraulic system is installed with a hot water tank must the
following points be considered:
• For hot water, a weekly program (two heating periods per day)
can be selected.
• Only during this time can hot water heating occur, taking into ac-
count the enable temperature for the hot water pump.
• You can specify the temperature of the hot water supply. If the
temperature falls below the preset hot water temperature by the
hysteresis value minus the preset hot water hysteresis value, the
hot water heating pump will start up.
H
OT WATER PRIORITY You can give priority to the heating of the hot water tank. This means
that if hot water heating is “on”, the supply temperature to the hea-
ting circuits is reduced. The duration of the priority is also configu-
rable.
P
ROTECTION FROM
L
EGIONNAIRE'S DISEASE
If protection from Legionnaire's disease is activated, the hot water
will be heated up once weekly to this specified temperature.
Figure 3/9 - Diagram of the screed drying program
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