Miele PDR 910 EL Installations Plan page 25

Procedure 1. Measure the length needed for the straight sections of ducting.
Multiply this value by the corresponding relative pipe length
from table I.
2. Calculate the number of bends and components needed. Use
Table I to help you add together their relative pipe lengths.
3. Add together all of the relative pipe lengths calculated above in
order to calculate the total ducting length.
4. Refer to Table II for the pipe diameter needed for the total duct-
ing length.
Table I
Components
Exhaust air hose (flexible aluminium)* / pipe
(temperature resistance min. 80 °C)
– 1 m laid straight or 1 m straight pipe
– 45° bend (radius of bend = 0.25 m)
– 90° bend (radius of bend = 0.25 m)
The use of a wall pipe or window connection is regarded as an
exception to the design principles of the exhaust air manage-
ment system. This must be carried out in accordance with the
applicable local building regulations. Seek approval from the
relevant building inspector where necessary.
Wall pipe* or window connection*
– with inserted grate
– with non-return flap (swinging flap)
Non-return flap*
* optional accessories
Table II
Maximum permissible total duct-
ing length
20 m
40 m
80 m
en - Installation notes
Relative pipe
length
1.0 m
0.6 m
0.8 m
3.8 m
1.5 m
14.3 m
Required diameter
100 mm
125 mm
150 mm
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