Siemens LF98BC540B, Instructions For Installation And Use Manual, Page: 8 / 12

8
Installation
Pipe dimensions
Note: The device manufacturer does not assume any warranty
for complaints attributable to the pipe section.
■
The device achieves its optimum performance by means of a
short, straight exhaust air pipe and as large a pipe diameter
as possible.
■
As a result of long rough exhaust air pipes, many pipe bends
or diameters, the optimum extraction performance is not
achieved and fan noise is increased.
■
The pipes or hoses for laying the exhaust air line must
consist of non-combustible material.
Round pipes
An inner diameter of 150 mm, but at least 120 mm, is
recommended.
Flat ducts
The inner cross-section must correspond to the diameter of the
round pipes.
Ø 150 mm approx. 177 cm
2
Ø 120 mm approx. 113 cm
2
■
Flat ducts should have no sharp deflections.
■
Use sealing strip for deviating pipe diameters.
Preparing the ceiling
■
The ceiling must be flat, horizontal and adequately load-
bearing.
■
The depth of the boreholes must be the same length
as the screws. The wall plugs must have a secure grip.
■
The enclosed screws and wall plugs are suitable for solid
brickwork. Suitable fasteners must be used for other
structures (e.g. plasterboard, porous concrete, poroton
bricks).
■
The max. weight of the extractor hood is 50 kg .
Attaching upper support frame
1. Before installation, specify the total height of the support
frame and mark the screw holes.
Note: The height of the support frame can be adjusted
in 20 mm steps.
2.
On the ceiling mark the centre point of the appliance.
3. Using the enclosed template, mark the positions
for the screws on the ceiling.
4. Drill four 8 mm Ø holes to a depth of 80 mm for the
attachments and press in the wall plugs flush with the wall.
5. Attach the upper part of the support frame to the ceiling
with 4 screws.
Note: Ensure that the support frame is in the correct position.
The middle bracket defines the preferred side and must
be facing the hob control.
Attaching lower support frame
Attach upper and lower parts of the support frame
at the specified total height using 10 screws.
Notes
■
Ensure that the lower support frame is in the correct position.
The open side must be facing the hob control.
■
The support frame can be re-aligned by loosening
the fastening screws.
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