ID.: 17-16-24-3004-02 | 6.2017
20
On the air outlet side it is necessary to enable unobstructed air flow at least 1 m behind the air
connection. On the side of the ceiling it is necessary to enable at least 20 cm of unobstructed
air flow.
In case air ducts are used, it has to be considered that the air pipes and every additional bend
represent additional air resistance and lesser capacity of the device. The table below shows
the maximal allowed lengths of air ducts.
Maximal length of air ducts
m
Internal diameter 150 mm:
10
Internal diameter 160 mm:
15
Internal diameter 200 mm:
25
When determining the end length of air ducts, the equivalent length of elements such as bends,
reducers ... has to be taken into account.
Accessories
Equivalent length in m
Bend 90° (
Φ
160 mm):
3
Bend 90° (
Φ
200 mm):
2
Reducer
Φ
200x
Φ
160:
1
External grill (
Φ
160 mm):
2
NOTE
The device must be installed in a manner which prevents mixing of the air on the
intake and outlet. If this is not possible and the pump is used for drawing and
releasing air in the same room (picture 2), direct mixing of intake and outlet air
must be prevented.
Summary of Contents for WP2 LF-202B
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