Starting A Heating Circuit And Dhw Heating/Loading; Starting Dhw Only; Shutting Down A Heating Circuit And Dhw Heating/Loading - Viessmann VITODENS Operating Instructions Manual

Start-up and shutdown

Starting a heating circuit and DHW heating/loading

Press G.
Heating and DHW:
&
Central heating active.
&
DHW will be loaded (subject to a
DHW cylinder or instantaneous
water heater being installed).
&
Frost protection for the boiler and
DHW cylinder is active.

Starting DHW only

Press L.
DHW only:
&
No central heating.
&
DHW will be loaded (subject to a
DHW cylinder or instantaneous
water heater being installed).
&
Frost protection for the boiler and
DHW cylinder is active.

Shutting down a heating circuit and DHW heating/loading

Press K.
Standby mode:
&
No central heating.
&
No DHW heating.
&
Frost protection for the boiler and
DHW cylinder is active.
12
Note
The circulation pump will be started
for short periods at regular intervals to
prevent it from seizing up. These
intervals can be modified by your
heating contractor.