Starting A Heating Circuit And Dhw Heating - Viessmann VITODENS Operating Instructions Manual

Shutting down the heating system
If you do not want to use your heating system, you can shut it down.
We recommend you contact your local heating contractor, if you plan to take
your heating system out of use for longer periods and before returning it into
use.
Your heating contractor can then take any necessary actions, subject to require-
ments, e.g. frost protection or preserving the heating surfaces.

Starting a heating circuit and DHW heating

You want to heat your rooms and have DHW available.
Press G.
Heating and DHW:
Central heating is active.
DHW will be heated (subject to a
DHW cylinder or instantaneous
water heater being installed).
Boiler and DHW cylinder are pro-
tected against frost.
Start-up/shutdown
(cont.)
1. Switch system ON/OFF switch "8"
OFF.
The green indicator (ON indicator)
goes out.
2. Close the gas shut-off valve.
3. Isolate the system from its main
power supply, e.g. at a separate
MCB/fuse or a main isolator.
Frost protection is
enabled
All control settings are retained.
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