E04 Threshold For Electrical Power - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group Photovoltaics

7E04 Threshold for electrical power

In connection with on-site power consumption, the fol-
lowing functions will only start if the electrical PV sys-
tem output captured by the generation meter (accesso-
ries) exceeds the set threshold:
■ Advancing DHW heating
Heating the DHW cylinder to "Set DHW tempera-
■
ture 2 600C" once a week
Raising the temperature inside the buffer cylinder
■
based on the forecast heat demand
■ Reduction of set value in the heating water/coolant
buffer cylinder by "Reduce set coolant buffer cylin-
der temperature PV 7E26".
Central heating:
■
Raising the set room temperature by "Raise set
room temperature PV 7E23".
Central cooling:
Reduction of the set room temperature by "Raise
set room temperature PV 7E23".
7E10 Enable own energy consumptn for set DHW temperature 2
Once a week, the DHW cylinder is fully heated to "Set
DHW temperature 2 600C" using electricity from the
photovoltaic system. The instantaneous heating water
heater can also be started for this (if installed).
Note
This heating of the DHW cylinder only starts if the
■
daily maximum of fed-in electrical power is expected
shortly.
■ If the electrical output of the photovoltaic system is
not sufficient during cylinder heating, this process is
continued with electricity from the grid.
7E11 Enable own energy consumption for DHW heating
If DHW heating with on-site power consumption is ena-
bled, the set cylinder temperature increases compared
to operation with power from the mains. The increase
is set via "Raise set DHW cylinder temperature PV
7E21".
Note
If sufficient electricity is available from the PV sys-
■
tem, heating can also start outside the selected time
phases in the time program.
■ "Raise set DHW cylinder temperature PV 7E21"
will no longer be effective if the electrical output of
the PV system is no longer sufficient during cylinder
heating. Cylinder heating will continue with power
from the mains if a time phase for DHW heating is
enabled. Otherwise DHW heating terminates.
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Setting 1 0.1 kW
Value Meaning
"0" Weekly heat-up of the DHW cylinder disabled
"1" Weekly heat-up of the DHW cylinder enabled
Value Meaning
"0" DHW heating with on-site power consump-
tion is disabled.
"1" DHW heating with on-site power consump-
tion is enabled.