Neff D2664X0 - Manual (Page 64)

64
Before installation
With exhaust mode , a backwash valve
should be installed unless it is already in -
corporated in the exhaust pipe or wall box.
If a backwash valve is not included with
your appliance, your dealer can supply you
with one (see accessories).
Installation backwash valve:
Insert the backwash valve in the mounting
openings on the air connector.
If the exhaust air is being routed
through the outside wall
, a telescopic
wall box should be used.
Connecting to Ø100 mm exhaustair duct
Attach the reducing adapter (enclosed or
available from specialist dealer) to the air
outlet. Attach the exhaust-air duct to the
adapter.
Connecting to Ø120 mm exhaustair duct
Attach the exhaust-air duct directly to the
air outlet.
Connecting to Ø150 mm exhaustair duct
Attach the enlarging adapter (enclosed or
available from specialist dealer) to the air
outlet. Attach the exhaust-air duct to the
adapter.
If a backflow flap has been installed, check
that it functions properly.
Circulating-air mode
With activated carbon filter if exhaust-air
mode is not possible.
The air purified by an additional activat-
ed carbon filter is returned to the room.
After installing the extractor hood, insert
the activated carbon filter.
For installing see Filters and maintenance.
If the extractor hood is installed beneath a
cabinet, ensure that there is an adequate air
outlet (min. 177 cm
2 ).
ṇ
The extractor comes as standard equip-
ped with a protective grid in the air connec-
tor. If this is has been removed (in the case
of exhaust air operation), the air connector
must be supplemented by a reducer piece
with protective grid (see section on special
accessories).