Miele DA 249-3 Operating And Installation Instructions page 10

The hood offers two modes of
operation:
The air is drawn in and cleaned by the
decor panel and the grease filter and
directed outside.
The hood comes equipped with a
. This flap automatically
closes when the hood is turned off so
that no exchange of outside air and
room air can occur. When the hood is
turned on, the air pressure of the
exhaust fan automatically opens the
flap blowing the inside air and cooking
odors outside.
10
Air is drawn through the grease filter
and an
filtered air is then recirculated back into
the kitchen through a vent at the top of
the hood's chimney.
Before using the hood in recir-
culation mode, ensure that the active
charcoal filters are in place, see
"Cleaning and Care".
. The