Miele DUU 1000-1 Mode D'emploi Et Instructions De Montage page 19

 This conversion kit is designed to direct air back into the room
in which the cooker hood is installed. If you want the air to be
directed to the outside and your dwelling has a heating appliance
that relies on air in the room for combustion extreme caution is
required.
Danger of poisoning by toxic fumes.
It is essential to observe the warning and safety instructions in the
instruction manual for your cooker hood and that you comply with
appropriate health and safety and buildings regulations. Please
seek the advice of an expert in this field.

This conversion kit is intended for use in domestic households
and similar working and residential environments.

It must only be used as a domestic appliance to extract vapours
and remove odours from cooking.
Any other usage is not supported by the manufacturer and could be
dangerous.

It must only be used for converting a Miele cooker hood to
recirculation mode.

Please observe the instructions given in this manual with regards
to cleaning and reactivating charcoal filters.
 This charcoal filter must not be cleaned in a dishwasher!
Residual detergent can get into the filter if cleaned in a
dishwasher. High oven temperatures used in subsequent
reactivation in an oven can lead to these detergent residues self-
igniting.
en - Warning and Safety instructions
19