11
ENGLISH
L2000782 Installation guide for DucoBox Energy Comfort (Revision B.1 | 25.03.2020)
06
Fitting
06.A
General guidelines
The smooth running of your Duco ventilation system is totally dependent on the choice and the
quality of implementation of the duct system! Accordingly, take account of the following guideli-
nes when choosing the installation location.
The unit must be connected to a ducting network before it is put into operation.
This is 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 air-
tight connections and duct routing�
• The ductwork is to be installed with the smallest possible number of bends and hence the least resistance� The system is based
on a maximum resistance of 150 Pa�
• 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, as well as a
flue gas outlet duct� If in doubt, use the dilution factor calculator (
EN13779:2007
table A�2 or
STS-P73-1
section 4�16�3)�
• Although the DucoBox Energy Comfort is a very quiet system, it is advisable to fit a rigid silencer on ducts going into the house
in order to obtain maximum acoustic comfort� 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 adequa-
tely insulated in order to prevent condensation from
forming� Any ducting in uninsulated unheated spaces
also needs to be insulated�
• Install the exhaust duct on the house side (ETA) drai-
ning towards the unit in all cases 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�
• You are better choosing a northerly aspect for the
supply of outdoor air in order not to draw in warm air
during the summer months�
• Take care to ensure that the air inlet is accessible
for any cleaning that may be required� A smaller
cross-sectional area bore can actually have a major
detrimental impact on system performance�
• Duco advises you to fit a minimum of 40 cm length of
straight ducting before diverting the air flow on the
intake side of the supply�
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.
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7
3
1
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
Also consult our "12 UNMISSABLE
TIPS" for an overview with the most
important points of interest.
