Viessmann Vitotron 100 Operating Instructions For The System User page 17

Control panel VMN3
TURBO function
If the building is cold and needs to be heated up
quickly, the TURBO function can be activated.
Provided that the conditions for switching on the
heating are met, this function starts the central heating
with maximum parameters and maintains these until
the required temperature has been reached in a room.
This function can be started automatically when the
room temperature falls by the hysteresis of the set
room temperature.
Automatic mode is set in the [Configuration > Turbo]
menu. Selecting "DHW cylinder – NO" switches off
DHW priority for the duration of Turbo operation. In
the "Party/Holiday/Manual" menu, it is possible to
switch on this function automatically (without DHW
heating priority), provided the room temperature is
lower than programmed. Sensor Tr is required to
switch on the Turbo function.
(cont.)
If no switching times have been defined, the period
00:00 to 23:59 is set after selecting "New". This should
be edited according to the user's requirements.
Press the "END" command to save the daily program
in the boiler settings.
Frost protection
If the room temperature drops below 7 °C and the
outside temperature drops below 2 °C in standby mode
and summer operation, central heating is activated.
Sensor Tr is required for activation.
The function is inactive when the boiler is controlled by
an external room temperature controller connected to
the room temperature input. In this case, activate frost
protection mode on the external controller. The boiler
then maintains the set temperature manually.
Settings
17