Siemens LF 157 GA 70 Mode D'emploi Et Notice De Montage page 22

Installation
10. Attach upper tower to the ceiling with
washers and nuts.
11. Push the lower tower over the upper
tower and secure with adhesive tape.
12. (Exhaust-air mode) attach the exhaust-
air hose to the extractor hood, ensuring that
the exhaustair hose is not kinked.
13. Connect the power supply. (Exhaust-air
mode) if using an external fan motor, attach
the connection cable.
14. Raise the extractor hood and push into
the upper tower until the fixing holes in the
module and tower are in alignment.
15. Attach the extractor hood to the upper
tower.
16. Release the lower tower by removing
the adhesive tape and pull down until it rests
on the hood.
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