Viessmann Vitotronic 200 Operating Instructions Manual page 46

Power from a photovoltaic system
Utilisation of power generated on site
Further information can be found in chapter
"Terminology" in the appendix.
You can use the power from your photovoltaic system
(power generated on site) to operate the heat pump.
For this, you enable one or more functions.
For the utilisation of power generated on site, select
the appropriate operating program for central heating,
central cooling or DHW heating, e.g. "Heating and
DHW": see page 19.
To increase the utilisation of power generated on site,
you can raise the set temperature for the following
functions or lower it for cooling:
Function Set temperature
Increase
Standard DHW temperature
"DHW cylinder "Set DHW cyl.
heating" increase"
Higher DHW temperature
"Set DHW tem-
—
perature 2"
Heating the heating water buffer cylinder
"Heating htg "Set htg water
water buff cyl" buffer in-
crease"
Central heating
"Raise room "Set room
temperature" temp. in-
crease"
Central cooling
"Room temper-
—
ature cooling"
1. Extended menu:
2. "PV ctrl strategy"
3. Select the required function, e.g. "DHW cylinder
heating"
46
4. Set the required temperature increase or tempera-
Setback
—
5. If required, repeat steps 3 to 4 for further functions.
—
Note
■ If you enable several functions for the utilisation of
power generated on site, the functions for DHW
heating will have priority over the functions for cen-
—
tral heating/central cooling.
■ Activating "Set DHW temperature 2" is only appro-
priate if you have not set a time phase for the
"Temp. 2" operating status in the time program for
—
DHW heating: see page 34.
If you still have the "Temp. 2" operating status set in
the time program, your DHW cylinder may be heated
with electricity from the grid in these time phases.
■ In parallel to the utilisation of power generated on
"Set room temp.
site, a percentage of power can be drawn from the
reduction"
grid for operating the heat pump. Your contractor can
enable this function.
■ Only for air/water heat pumps with output control:
To raise and lower the set temperatures, your con-
tractor can implement a setting that will automatically
match the compressor output to the amount of power
generated by the photovoltaic system. This optimises
the utilisation of power generated on site.
Utilisation of power generated on site and utilisa-
tion of excess power from the grid (Smart Grid)
If the utilisation of power generated on site and Smart
Grid are enabled and active simultaneously, the func-
tion with the largest temperature increase or reduction
is used: see page 47.
ture reduction. E.g. 10 Kelvin (10 K) for "Set DHW
cyl. increase" to increase the set temperature for
the standard DHW temperature from 50 °C to
60 °C.
Set DHW cyl. increase
10.0 K
Change with
Fig. 29
+