technical documentation manuals 308013008

16
| Installation
7.2.1 Installation of the ventilation system
Preconditions
♦ The air flow of the fan must be able to open the air operated damper (LRK).
Installation duct
♦ Do not place a duct bend directly
before or after the fan!
• This can cause damage to the
bearings or other parts of the fan.
• The duty point may not be
reachable.
• The fan may make noise.
♦ Ensure a direct, smooth and
constant air flow to the device.
Ensure a free exhaust, see the
following pictures.
♦ Install an inlet cone or a channel
section with a length of at least 2.5
x D. It is not recommended to install
the protective guard directly in
front of the impeller (without inlet
cone), as additional noise and a
deterioration of the air
performance may result.
♦ To reduce transmission of vibration
to the duct system, we recommend
flexible connections from our
accessory range, see 5.2.3
Accessories, page 7.
D = nominal diameter
3
1
2
min. 2,5xD
min. 2,5xD
3
1
Inlet cone
2
Protective guard
3
Flexible connection
Distance from the wall/ceiling
♦ Ensure enough distance between the ceiling and the
wall.
• The duty point may not be reachable.
• The fan may make noise.
If the minimal distances are not possible for construction
reasons, install a deflector in front of the fan in a way
that ensures a direct, smooth and constant flow of air.
Contact with rotating parts must be ruled out at all times
– either by ducts of a corresponding length or by
protective grids.
D = Nominal diameter
min. 1xD
1xD
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