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ENGLISH
L2000651 Installation guide for DucoBox Silent (Revision N | 13.07.2020)
≥ 200 kg / m²
03
Fitting
03.A
Position
Select a
roof pass-through
with low resistance.
0,5 à 1 m
Duct leading to the roof pass-through: use a
reducer 125 mm – 160mm.
Never use flexible
connections.
Avoid curves in this part of the
canalization. If the DucoBox is not mounted in a
protected (insulated) volume, this duct needs to be
thermally insulated.
Use an
acoustic
silencer
of
minimum
0.5 to 1 m.
This in every
connection
which leads
to a different
room.
Keep the box
airtight
. Close
the cover tightly and place
a cap onto any unused
opening.
Avoid as much as
possible the use of
curves.
Avoid sharp
angles.
Avoid
bumps and dirt
in the ducts.
> 90°
160
mm
125 mm
→
≥ 30 m3/h
100 mm
→
< 30 m3/h
< 90°
Reduce the transmission of
vibrations:
• Use Silent Block elements when
fixing the DucoBox to the wall.
• Use duct suspension clamps with
rubber.
Do not place an
exhaust air valve
directly on the box.
Use a 90° bend
between the DucoBox
and the valve. Use
valves with an as low
as possible back-
pressure and follow
the instructions as
given in the manual
regarding the opening
of the valves.
Assure an
airtight
connection by using
tape, clamping strips
or tie-wrap.
Do not
use screws.
Diameter of the ducts:
125 mm upward from 30 m³/h
100 mm less than 30 m³/h
Or an equivalent based on a specific duct calculation
(p.e. for ducts placed in floor screed). Make sure that
the total counter pressure in the ducts is as low as
possible (preferably ≤ 150Pa) and that the airspeed in
every duct
does not exceed 3 m/s
.
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7
8
9
10
2
3
4
5
6
DISCLAIMER:
no rights can be derived from this document.
All tips are only advisory. All those carrying out
the work can, depending on the project at
hand, determine for themselves which
tips are feasible and/or useful.
The smooth running of your Duco ventilation system is totally dependent
on the choice and the quality of implementation of the duct system!
10 UNMISSABLE TIPS
Has the duct system been optimized? Ask
professional advice from your duct supplier. It
saves you time, ensures quality and provides
energetic advantage for the end user!
L1025000-B 01.06.2018
03.C
Air duct
connections
Keep down restriction� A non-return flap is
required when discharging into a manifold�
Be sure to take note of the ‘10 unmissable
tips’ as well when fitting the DucoBox� Avoid-
ing excessive use of bends, especially angles
greater than 90° and adhering to the diam-
eter guidelines for the ductwork will ensure
that the ventilation box is able to do its job
satisfactorily� Failure to take account of this
recommendation may result in a highly energy
and maintenance-intensive system that gives
rise to frequent excessive noise levels�
03.B
Fixing
