Shutting Down The Heating System For An Extended Period; Shutdown - Viessmann VITOLIGNO 300-H Operating Instructions For The System User

Shutting down the heating system for an extended period

Shutting down the heating system for an extended period
You can switch your heating system OFF
if you do not intend using it. We recom-
mend you contact your local heating con-
tractor before and after shutting down for
longer periods.
Your heating contractor can then take
suitable steps such as frost protection for
the system or heating surface preserva-
tion as required.

Shutdown

1. Note
Only disconnect the mains plug of the
boiler for maintenance and repair
purposes.
■ Otherwise the lambda probe will
not be heated. This can cause
damage to the lambda probe dur-
ing longer shutdown periods.
■ The boiler circuit pump is switched
on briefly at regular intervals.
2. Perform all work described in the
overview of the chapter entitled
"Maintenance and repairs" on
page 61.
3. If there is a risk of frost, drain the
boiler. Observe the instructions from
your heating system installer. Alter-
natively, you could ask them to add
antifreeze.
Note
No special measures are necessary
when shutting down the system on a
temporary basis.
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