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L2003212 Installation guide for DucoBox Energy Comfort (Plus) (Revision A | 18.10.2022)
05
Mounting
05.A
General guidelines
The proper functioning of your DUCO ventilation system depends entirely on the choice and implementation quality of the supply
and return pipes! Therefore, keep the following guidelines in mind when choosing the installation location�
Before putting the unit into operation, it must first be connected to a duct network to prevent you from being able
to touch the fan.
• Always use high-grade materials and seals in order to achieve the best airtightness� The entire system is based on proper
airtight connections and duct routing�
• The ductwork is to be installed with as few bends as possible and hence the least resistance� The system is based on a maximum
resistance of 150 Pa (for D225 and D325) and 200 Pa (for D400, D350, D450 and D550)�
• Take care to ensure that the ducts are free from dents, long screws and extra obstructions on the inside� This is detrimental to
proper maintenance and sustainable operation�
• The supply duct (fresh outdoor air) must be far enough away from a polluted source� This could be the exhaust duct, or an outlet
duct of combustion air� Please refer to applicable local legislation (e�g� for BE: STS-P73-1 chapter 4�16�3; for NL: EN13779:2007
table A�2; for FR: DTU 68�3 P1-1-1 (6�5) + P1-1-4 (5�1�2) etc�)
• To achieve maximum acoustic comfort,
DUCO recommends installing a silencer on
the ducts going into the house� A silencer
may also be needed in order to prevent
voices from carrying from one room to
another�
• Ducts connected with the outdoor air must
be adequately insulated in order to prevent
condensation� Any ducting in uninsulated
unheated spaces also needs to be insulated�
• Always install the extract air duct on the
house side (ETA) draining towards the unit in
order to avoid any build-up of condensation
in the duct� A great deal of moisture-laden
air can be extracted during showering or
cooking�
• It is better to choose the supply of outdoor
air on the north side, to avoid drawing in too
warm air inside during the summer months�
• Ensure that the air inlet is accessible for any
cleaning that may be required� A smaller
passage area can actually have a major
negative impact on system performance�
• DUCO recommends installing a minimum
of 40 cm length of straight ducting before
deflecting the air flow on the intake side of
the supply�
Also consult our "12 not-to-be-missed tips" for
an overview with the most important points of
interest�
EHA
SUP1
SUP2
ETA
ODA
64 mm
0000-4376
80 mm
Use thermally insulated ducts for ODA
and EHA.
Use at least 1 m of flexible or rigid
silencer.
Rigid = low emission from housing
Flex = low noise from duct
Duct diameter:
160 mm to 250 m³/h / 180 mm from 250 m³/h and
over or equivalent subject to calculation (e.g. with cast-
in ducting)
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.
Hang the unit level.
Allow sufficient space for the
condensate drain.
Use silencers between
rooms to prevent voices from
carrying.
For wall mounting: wall
with minimum mass density
of 200 kg/m². Plaster blocks or
metal struts are not adequate!
Use a mounting plinth if the wall is
not sufficient.
Use brackets
with a rubber
inlay to reduce
transmission of
vibration.
Keep resistance down
to a minimum.
Avoid as much as
possible the use of
curves. Avoid sharp
angles. Avoid bumps
and dirt in the ducts.
Select a roof pass-through
with low resistance.
Assure an airtight connection by
using tape, clamping strips or tie-
wrap. Do not use screws. Place
a cap on any unused connection
opening.
Ensure there is sufficient distance
between ODA and EHA cf. EN 13779.
installation-tips-DucoBox-Energy-(en)
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The correct operation of your Duco ventilation system is entirely dependent
on the choice and build quality of the supply and exhaust ducts!
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!
12 UNMISSABLE TIPS
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.
L2000370-G 27.02.2020
