4.0 Options
tion in the exchanger impossible). This solution ensures a
permanent balance between the supply and extraction air.
Adjustment is 100% stepless to ensure the lowest possible
power consumption during operation. No settings are
required on an electric preheating surface.
Afterheating surface, electric
+
Supply air
to room
Extraction air
from room
Exhaust
Outdoor
air
The electric afterheating surface is used to ensure a mini-
mum supply temperature before the air is blown into the
room. The ventilation system will usually heat the outside
air up to a temperature that is very close to room tempera-
ture so the electric afterheating surface is only used to give
the supply temperature a little lift. Adjustment is 100%
stepless to ensure the lowest possible power consumption
during operation.
The required supply temperature can be set from the Air
Dial in Main menu > Settings > Temperature > Supply
Afterheating surface, water-based
+
Central heating
(oil burner,
gas burner,
heat pump or
district heating)
Pump
Supply air
to room
Extraction air
from room
Exhaust
Outdoor
air
The water-based afterheating surface is (most often) used
to ensure a minimum supply temperature before the air is
Pump
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