Frost Protection - DeDietrich Alezio V220 Evolution User Manual

5.4

Frost Protection

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In the event of a prolonged absence (weekend, holiday), it is possible to
switch to shutdown/frost protection mode.
It is possible to produce domestic hot water
See
User settings, page 17
Caution
It is recommended that the heat pump never be completely shut
down. Frost protection is no longer automatically guaranteed if the
mains supply is switched off.
When the outside temperature drops too low, the appliance's protection
system starts up. Frost protection is handled by the back-up. The back-up
is tripped automatically to handle frost protection under the following
conditions:
Tab.12 Frost protection conditions
Frost protection Conditions
Heating circuit Outside temperature: < 3°C
Heating flow temperature: < 6°C
Domestic hot water Outside temperature: < 3°C
tank protection Domestic hot water temperature: < 4°C
5 Operation
all year round.
AWHP-2 MIV-3 V220 15