Selecting The Heating Program (Winter, Summer) - Viessmann Vitotronic 300 Operating Instructions Manual

Ready for operation

Selecting the heating program (winter, summer)

1. Press the heating circuit selector
button; the button is lit.
2. Select the required heating pro
gram with the G, L or K but
ton.
Central heating and domestic hot
water
H Central heating with alternating
normal and reduced room tem
perature (frost protection) accord
ing to the selected time program
H Domestic hot water supply (if a
DHW cylinder is installed) and
DHW circulation pump (if installed)
ON according to the selected time
program
H Frost protection of the boiler and
the DHW cylinder
Domestic hot water only
H No central heating
H Domestic hot water supply (if a
DHW cylinder is installed) and
DHW circulation pump (if installed)
ON according to the selected time
program
H Frost protection of the boiler and
the DHW cylinder
Standby operation
H No central heating
H No domestic hot water supply
H Frost protection of the boiler and
the DHW cylinder
The selected heating program
appears in the display window for
a short time.
Example
For the winter and transitionary
periods.
Please note:
When the button is lit, the "s"
symbol appears in the display
window during central heating
with the normal room temperature;
the "m" symbol is lit during central
heating with a reduced room tem
perature higher than 3 °C (see page
8).
Example
For the summer.
Please note:
If no DHW cylinder is connected,
"Without function" is displayed.
The circulation pumps are switched
on for a short time every 24 hours to
prevent them from seizing up.
7