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Switching OFF Vitodens with Frost Protection
9
tr
Shutting Down the Heating System
12
Switch OFF the equipment if you do not wish to use your heating system for a few
days.
Shut down your heating system completely, if it is not needed for longer periods of
time (several months).
Before you switch your heating system OFF for longer periods, it is advisable to contact
your local heating contractor. Your heating professional will take any necessary
measures, e.g. for freeze protection of the system or to protect the heat emitter
surfaces, e.g. radiators etc.
Turn selector dial "tr" to "9".
Boiler frost protection is active.
Frost protection
Frost protection is continuously active.
The burner is switched ON when the
boiler water temperature reaches 41°F /
5°C and is switched OFF again when the
boiler water temperature reaches at least
59 °F / 15°C (but not more than 68°F /
20°C).
1. Close gas shutoff valve and secure
against unintentional opening.
2. Switch OFF line voltage (e.g. at
separate fuse/circuit breaker).
The power supply to the system is now
switched off.
IMPORTANT
At this point the boiler and the system is
no longer protected from freezing.
Operation
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