Bosch DWK09M720 Polar Weiß Wandesse 90 cm Schräg-Essen-Design - Manual (Page 25)

25
Prior to installation
The exhaust air is discharged upwards
through a ventilation shaft or directly through
the outside wall into the open.
For operating in exhaust-air mode, a one-
way flap should be mounted inside the wall
ventilation box.
If no one-way flap was enclosed with the
hood, it can be obtained from a specialist
retailer.
Installing the one-way flap:
❑ Snap the one-way flap into the air pipe.
The two lightly sprung flaps must be
able to move upwards.
If the exhaust air is going to be
discharged into the open, a telescopic wall
box should be fitted into the outside wall.
❑ For optimum extractor hood efficiency:
❑ Short, smooth air exhaust pipe.
❑ As few bends in the pipe as possible.
❑ Diameter of pipe to be as large as
possible and no tight bends in pipe.
If long, rough exhaust-air pipes, many
pipe bends or smaller pipe diameters
are used, the air extraction rate will no
longer be at an optimum level and
Exhaust-air mode
there will be an increase in noise.
❑ Round pipes:
We recommend Internal diameter:
120 mm
❑ Flat ducts must have an internal cross
section that equates to that of round
pipes.
There should be no sharp bends.
Ø 150 mm approx. 177 cm
2 .
❑ If pipes have different diameters:
Insert sealing strip.
❑ For exhaust-air mode, ensure that there
is an adequate supply of fresh air.
Connecting a Ø 150 mm exhaust-air pipe:
❑ Mount the pipe directly onto the air outlet
on the hood.
Ш
150
Ш
150
237,4
247,2
40
580
137-565
900
1058,5 - 1486,5
547-975