5 Operating and display functions
32
Operating instructions VRT 350f 0020131979_00
5.3.2 Modes for hot water production
The operating mode for hot water generation corresponds
to the heating circuit operating mode that has been set. You
cannot set a different operating mode.
5.3.2.1 Automatic mode
The automatic mode controls the hot water generation in
accordance with the set desired temperature for
Hot wa-
ter circuit
and the set time periods. In the
Timer programs
function, you have set time periods for hot water gener-
ation. If you have not set any time periods, the controller
uses the time period set in the factory settings for hot wa-
ter generation.
Within the time period, hot water generation is switched on
and maintains the hot water in the DHW cylinder at the pre-
set temperature. Outside the period, hot water generation is
switched off.
5.3.2.2 Summer mode
The summer mode controls the hot water generation in ac-
cordance with the set desired temperature for
Hot water
circuit
and the set time periods. In the
Timer programs
function, you have set time periods for hot water gener-
ation. If you have not set any time periods, the controller
uses the time period set in the factory settings for hot wa-
ter generation.
Within the time period, hot water generation is switched on
and maintains the hot water in the DHW cylinder at the pre-
set temperature. Outside the period, hot water generation is
switched off.
5.3.2.3 Comfort mode
The comfort mode controls the hot water generation in ac-
cordance with the set desired temperature for
Hot water
circuit
without taking time periods into account.
5.3.2.4 Set-back mode
Hot water generation is switched off and the frost protec-
tion function is activated.
5.3.2.5 System off
Hot water generation is switched off and the Frost protec-
tion function is active.
5.4
Special operating modes
The advanced functions can be activated directly from any
mode using the right-hand selector button
Operating mode
.