Setting The "Holiday Program" (Ho2C) - Viessmann VITODENS Operating Instructions Manual

"Holiday program" energy saving function
While the holiday program is active, "Holiday pro-
gram" is shown in the default display.
Tap the following on-screen buttons:
1. "Menu"
2. "Heating"
3. "Heating circuit 1 2 3" for the required heating cir-
cuit
4. "Holiday program"
5. / for "Departure date" and "Return date"
Fig. 30

Setting the "Holiday program" (HO2C)

The holiday program starts at 00:00 h the day after the
departure date. The holiday program ends at 00:00 h
on the return date. This means that the set time pro-
gram is active on the days of departure and return.
While the holiday program is active, "Holiday pro-
gram" is shown in the default display.
Tap the following on-screen buttons:
1.
2. "Holiday program"
3. Select "Heating circuit 1 2 3" for the required
heating circuit and/or ventilation
4.
(cont.)
6. OK to confirm
"Holiday program" appears in the default display.
7. If you would also like to apply the holiday program
to mechanical ventilation:
The holiday program has the following effects:
Central heating:
■
For heating circuits in the "Heating and DHW"
–
operating program:
The rooms are heated to the set reduced room
temperature (see page 29).
For heating circuits in the "Only DHW" operating
–
program:
No central heating. Frost protection for the boiler
and the DHW cylinder is enabled.
■ DHW heating:
No DHW heating. Frost protection for the DHW cylin-
der is active.
Mechanical ventilation (if the holiday program was
■
applied to mechanical ventilation):
Mechanical ventilation runs in basic mode (ventila-
tion level 1).
5. / for "Departure date" and "Return date"
Fig. 31
6. to confirm
"Holiday program" appears in the default display.
Central heating
33