Witt WSU90S, User Manual

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equipment. Disposal must be carried out in accordance with local
environmental regulations for waste disposal.
For further detailed information regarding the process, collection and
recycling of this product, please contact the appropriate department of your
local authorities or the local department for household waste or the shop
where you purchased this product.
Use
The hood is designed to be used either for exhausting or filter version.
The models with no suction motor only operate in ducting mode, and must
be connected to an external suction device (not supplied).
The connecting instructions are supplied with the peripheral suction unit.
Ducting version
In this case the fumes are conveyed outside of the building by means of a
special pipe connected with the connection ring located on top of the hood.
Attention
! The exhausting pipe is not supplied and must be purchased
apart.
Diameter of the exhausting pipe must be equal to that of the connection ring.
In the horizontal runs the exhausting pipe must be slightly slanted (about 10°)
and directed upwards to vent the air easily from the room to the outside.
Attention! If the hood is supplied with active charcoal filter, then it must be
removed.
Connect the hood and discharge holes on the walls with a diameter
equivalent to the air outlet (connection flange).
Using the tubes and discharge holes on walls with smaller dimensions will
cause a diminution of the suction performance and a drastic increase in noise.
Any responsibility in the matter is therefore declined.
! Use a duct of the minimum indispensible length.
! Use a duct with as few elbows as possible (maximum elbow angle:
90°).
!
Avoid drastic changes in the duct cross-section.
! Use a duct with an as smooth as possible inside.
! The duct must be made of certified material.
Filter version