Duco DucoBox Silent 325 User manual

Installation guide
ENGLISH
DucoBox Silent
Product version 17xxxx and above
Step by step
instructions
duco.tv
L2000651 (Revision M | 17.07.2019)
L2000651-installatiehandleiding-DucoBox-Silent-(en)-DRUK
installation-guide-DucoBox-Silent-(en)

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ENGLISH
L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
Table of contents
01 Introduction............................................................................................................ 3
02 Product sheet ........................................................................................................ 3
03 Fitting ....................................................................................................................... 4
03.A Position ........................................................................................................... 4
03.B Fixing................................................................................................................ 4
03.C Air duct connections................................................................................... 4
04 Wiring....................................................................................................................... 5
04.A Connector & buttons .................................................................................. 5
04.B Cabling diagram........................................................................................... 5
05 Additional control options................................................................................. 6
05.A 3-position switch* via Perilex connector............................................. 6
05.B Boxsensors .................................................................................................... 6
06 Electronical installation .................................................................................... 6
06.A Change settings ........................................................................................... 6
06.B Installer / User mode ................................................................................. 7
06.C LED indications............................................................................................. 7
06.D Setting type of home................................................................................... 7
06.E Pairing components.................................................................................... 8
06.F Removing / replacing components........................................................ 8
06.G Tips ................................................................................................................... 9
07 Air calibration........................................................................................................ 9
07.A Air calibration procedure for DucoBox Silent .................................... 9
07.C Checking.......................................................................................................11
08 Maintenance & service.....................................................................................11
09 Warranty................................................................................................................11
English
Vero Duco - Handelsstraat 19 - 8630 Veurne - Belgium
tel [phone] - fax [phone] - [e-mail] - www.duco.eu
DUCO, HANDELSSTRAAT 19
VEURNE, B8630
09
See www.duco.eu for information regarding warranty, maintenance, technical data, etc.
Installation, connection, maintenance and repairs are to be carried out by an accredited installer. The electronic components of this product may be live. Avoid
contact with water.
Translation of the original instructions

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
CO2
HIGH
LOW
INST
RH
Master
Slave
01 Introduction
02 Product sheet
DUCOBOX SILENT 400 DUCOBOX SILENT 325 DUCOBOX SILENT 225
Specific energy consumption (SEC) –27 kWh/m²a –27,2 kWh/m²a –27,3 kWh/m²a
SEC class
B
B
B
Typology unidirectional
Drive variable speed
Heat recovery system none
Maximum flow rate in m³/h at 100 Pa 400 325 225
Electric power daw at maximum flow rate (at 100Pa) 71,8W 42,7W 23,3W
Power at 50 Pa reference flow rate 27W 19W 11,5W
Sound power level (Lwa) 45 dB 41 dB 37 dB
Reference flow rate in m³/h 280 227,5 157,5
Reference pressure difference in Pa 50 Pa
SPI in W/m³/h 0,10 0,08 0,07
Control factor and control typology 0.65 = control based on 2 or more sensors
Air supply options: With Duco's Demand-Controlled Natural Ventilation Systems, there is a choice from a wide range of self-regulating (SR) window ventilators available for the fresh air supply.
From standard self-regulating louvres which can be fitted in every kind of window or installation site, to louvres with sound absorbing qualities for projects where there is exposure to (mild) levels
of noise, fire-resistant louvres, custom louvres for high-rise buildings, to ventilation and solar shading in a single product or electronically controlled louvres with preheating. See www.duco.eu for
more info.
Pre-/dis-assembly instructions see www.duco.eu
Annual electricity consumption (AEC) 1,3 kWh/a 1,1 kWh/a 1,0 kWh/a
Annual heating saved (AHS) 28,3 kWh/a
Congratulations on your DucoBox Silent,
the quietest box in Europe! The
DucoBox Silent performs two functions
in a Duco Demand-Controlled Natural
Ventilation System:
On the one hand it is the extractor fan
that exhausts stale air with excessive CO2
content or humidity.
On the other it is the system ‘master’ or
brain of the system. It receives and in-
terprets signals from slave components
(measurements from sensors or manual
input), on the basis of which it controls
the ventilation system.
It is inadvisable to connect the DucoBox
(via a duct or directly) to an extractor
hood, regardless of type. This usually
causes excessive fouling in the DucoBox,
which affects its operation or has a more
direct effect on output.

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
≥ 200 kg / m²
03 Fitting
03.A Position
0,5 à 1 m
Kanaal naar dakdoorvoer: verloop van 125mm
naar 160mm. Gebruik geen flexible verbinding.
Vermijd bochten in dit kanaal.
Indien de DucoBox niet in het beschermd volume zit
dient deze leiding thermisch geïsoleerd te zijn.
Plaats een
akoestische
demper van
minimaal
0,5à1m per
aansluitmond
die naar
een andere
ruimte leidt.
> 90°
160
mm
125 mm → ≥ 30 m³/h
100 mm → < 30 m³/h
< 90°
Beperk de overdracht van trillingen.
• Gebruik Silent Block bij
bevestiging van de DucoBox.
• Gebruik beugels met rubber inleg.
Kanaaldiameter:
125 mm vanaf 30 m³/h
100 mm kleiner dan 30 m³/h
of equivalent mits berekening (bv. bij instortleidingen)
Zorg ervoor dat de totale tegendruk zo laag mogelijk is
(streefdoel ≤ 150 Pa) en de luchtsnelheid in elk kanaal
kleiner is dan 3 m/s.
Vermijd zo veel
mogelijk bochten
en maak ze nooit
scherper dan 90°.
Vermijd deuken en vuil in de kanalen.
Plaats geen
afvoerventiel
rechtstreeks op de
DucoBox. Gebruik
een bocht tussen de
box en het ventiel.
Gebruik ventielen
met een zo laag
mogelijke tegendruk
en volg de instructies
zoals aangegeven in
de handleiding wat
betreft de opening van
het ventiel.
Maak de gekoppelde
kanalen luchtdicht
vast via tape,
slangklem of
tiewrap. Gebruik
geen schroeven bij
bevestiging.
Kies een dakdoorvoer met
lage weerstand.
Houd de DucoBox
luchtdicht. Sluit het deksel
goed en plaats een dop
op elke niet-gebruikte
aansluitmond.
installatietips-kanalen-DucoBox-Silent-Focus-(nl)
7
8
9
10
3
4
5
6
1
2
De goede werking van uw Duco ventilatiesysteem is volledig afhankelijk
van de keuze en uitvoeringskwaliteit van de afvoerleidingen!
10 NIET TE MISSEN TIPS
DISCLAIMER: aan dit document kunnen geen rechten
ontleend worden. Alle tips zijn louter adviserend.
Elke uitvoerder kan afhankelijk van het project
naar eigen goeddunken bepalen welke
tips haalbaar en/of nuttig zijn.
Werd het kanalensysteem geoptimaliseerd?
Vraag professioneel advies bij uw
leverancier van kanalen. Het bespaart u tijd,
verzekert u kwaliteit en levert energetisch
voordeel op voor de eindgebruiker!
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. Avoi-
ding excessive use of bends, especially angles
greater than 90° and adhering to the diame-
ter 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

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
04 Wiring
04.A Connector & buttons
CONNECTORS
1Power 230 VAC
2Perilex
3Humidity Boxsensor
4CO2Boxsensor
5Duco Network Tool
6Fan
CO2
HIGH
LOW
INST
RH
CO2
HIGH
LOW
INST
RH
PE 230 VAC
A
F
E
D
5
4
3
B
C
PE
N
L1
L2
L3
1
2
Blue Yellow Red White
6
The DucoBox Silent communicates with slave components through a wireless (RF)
connection. RF components have a maximum free-field range of 350 metres. This
distance will be much less in a building because of obstacles. Therefor you will
need to allow for features such as walls, concrete and metal. All slave components
(except those which are battery powered) also act as repeaters. Signals from com-
ponents that are unable to make a (strong) connection with the master component
are forwarded automatically via no more than one other component (= hop point).
Please refer to information sheet RFcommunication (L8000018) at www.duco.eu
for further information.
DUCO RF
Power supply 230 VAC
Wiring 1,5 mm²
Frequency 868 Mhz
Maximum distance 350 m, free field (less
through obstacles)
Maximum number
of components
Up to 25 wireless
components in a
single system
04.B Cabling diagram
BUTTONS
AUP
BENTER
CDOWN
DHIGH
ELOW
FINST
Illustrations and connections may vary depending on product configuration. Incorrect connection or failure
to follow the instructions may result in damage to the connected devices.
RF obstacle-free zone
Do not place any obstacles causing RF interference or other devices with an RF
connection within a radius of at least 30 cm around the RF component. We take these
to include items such as washing machines, tumble dryers, ironing boards, etc.
User controller
RF230 VAC RF230 VAC
Switch Sensor
RF230 VAC
Max. of 25 RF components
RF
DucoBox
Silent
230 VAC
≥ 30 cm
Strain relief
It is mandatory to place the
power supply cable in the slot
provided, as shown in the dra-
wing, before powering up the
DucoBox.
CO2
HIGH
LOW
INST
RH

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
05 Additional control options
05.A 3-position switch* via Perilex connector
The last operation on any User controller takes primacy
in all cases. The ventilation position on the 3-position
switch can therefore be overruled by another User con-
troller, such that an incorrect ventilation position will
be visible on the 3-position switch.
Please refer to the manual with the Duco Perilex plug
for more information.
* The 3-position switch is not a DUCO component.
06 Electronical installation
06.A Change settings
Most of the factory settings for the network and components will be satisfactory as they are, however, depending on the situation,
it may be desirable to change some parameters, such as the CO2setpoint. This can be done using the Duco Network Tool*. This
user-friendly software also enables problems in the system to be pinpointed. The Duco Network Tool is issued to every installer af-
ter attending a free training course at the DucoAcademy*. Please refer to our website or your Duco dealer for further information.
* Only in Belgium and the Netherlands
05.B Boxsensors
Boxsensors can be built into a DucoBox Silentand provide CO2and/
or humidity measurement in an air duct. ADucoBox Silent can
contain a maximum of oneCO2and oneHumidity Boxsensor. If the
living room (CO2measurement) and bathroom (humidity measure-
ment) are connected to the same duct/zone, the two Boxsensors
can be clipped together.
Fitting + connecting Boxsensor
1Twist the Boxsensor(s) into the desired duct in the box
until the Boxsensor clicks home.
2Connect the Boxsensors to one of the two connectors
provided on the DucoBox Silent PCB.
Settings
The CO2and RH setpoint can be changed using the Duco Network
Control Tool. See www.duco.eu for more information.
high setting
medium setting
low setting
RH
CO2
1
CLICK
CLICK
2
CLICK
RH CO2
DucoBox
A
B
C
D
E
F
G
A
B
C
D
E
F
G

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
06.B Installer / User mode
To add components to the network, remove or replace, the system should be put in ‘Installer mode’. The LED on each component
indicates the active mode of the component (seetable in next section).
‘Installer mode’ can be activated by pressing the DucoBox Silent ‘INST’ button (see drawing in section "04.A Connections & but-
tons" on page 5.) Once the LED on the master unit starts flashing, it means that ‘Installer mode’ is active. Press ‘INST’ again to
return to ‘User mode’ (LED fully on or off). The system reverts automatically to ‘User mode’ after 15 minutes of inactivity.
06.C LED indications
RED (blinking slowly)
Not in network
RED (blinking rapidly)
Logging in
GREEN (blinking slowly)
In network
GREEN (blinking rapidly)
In network, waiting for associated components
YELLOW (clignotement rapide)
Transitional phase (please wait)
YELLOW (on) Initialising (system
configuration in progress)
WHITE or OFF
Normal
BLUE
Component is displayed if changes are being put through via the master.
ORANGE
The system is not working correctly because the DucoBox has not been calibrated. Restart the
DucoBox. Follow the guidelines in ‘10 essential tips’ if the problem recurs continually.
06.D Setting type of home
Setting the type of home and number of occupants correctly will provide the ventilation system with a better basis to adjust the
mid-position. There are two types of home: low-rise (e.g. a house) and high-rise (e.g. a flat). Configuration of this component is
obligatory in the Netherlands. The standard setting for a DucoBox is as a low-rise home for 4 (or more) occupants.
Setting type of home
1Ensure that ‘Installer Mode’ has been activated (via the ‘INST’ button).
2Press ‘LOW’ for a low-rise or ‘HIGH’ for a high-rise home.
3
The yellow LED (see illustration) will flash in a pattern that indicates the
number of occupants: Once, twice (applies for 3 occupants as well) or 4
times (applies for 4 occupants or more). Press ‘LOW’ or ‘HIGH’ respectively
again until the LED pattern matches the correct number of occupants.
4Press the ‘INST’ button to exit ‘Installer mode’.
or
HIGH
LOW
INST

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
06.E Pairing components
Never pair more than one system with RF components at the same time. If you do so, a component in the wrong
network could be paired, e.g. in the neighbours’ DucoBox.
Pairing components on the DucoBox Silent
1Activate ‘Installer mode’ by tapping ‘INST’ on the DucoBox. The LED
will flash green rapidly.
2
Add control components by tapping once on the component to be
paired. The LED will flash red briefly and then start to flash green
rapidly. Repeat this step until all remaining components in the cur-
rent zone have been paired.
With RF components: start with the component closest to the mas-
ter. If the first pairing is unsuccessful, another component may be
tried first, which can then act as a hop point for components which
are unable to make an RF connection with the DucoBox.
3
Once all components have been paired, ‘Installer mode’ can be
deactivated by tapping ‘INST’ on the DucoBox Silent. LEDs on all
components will stop flashing.
Please refer to the manual with the components for more detailed informati-
on.
06.F Removing / replacing components
Removing paired components from the network or replacing is only possible within 30minutes after the component is paired in
or is restarted. Restarting can be done by disconnecting the power for a moment. After a time-span of 30 minutes, remove and
replace operations are ignored. This is valid for all components from date of manufacture 170323.
Removing a component
1
Activate ‘Installer mode’ by
long-pressing 2diagonal buttons
on a paired control. The LED will
flash green rapidly. 5 sec
2
Press once and hold a button on
the component to be removed
in order to remove it from the
network. 5 sec
3
Deactivate ‘Installer mode’ by
pressing the 4buttons on a paired
control simultaneously (or using
the palm of your hand on a control
featuring touch buttons). The LED
will turn white.
Replacing a component
1
Activate ‘Installer mode’ by
long-pressing 2diagonal buttons
on a paired control. The LED will
flash green rapidly. 5 sec
2Press briefly twice on the button
of the component to be replaced.
2x
OLD
3
Tap once on the button for the new
component. The latter will take on
all settings / connections in the
network. 1x
NEW
3
Deactivate ‘Installer mode’ by
pressing the 4buttons on a paired
control simultaneously (or using
the palm of your hand on a control
featuring touch buttons). The LED
will turn white.
1
2 3
4
5
6
7
8
Example of a pairing sequence
indicates the order in which a
button of the component must be
pressed controls component
X

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L2000651 Installation guide for DucoBox Silent (Revision M | 17.07.2019)
06.G Tips
• Removing all components from the network (e.g. in the event of problems): Activate ‘Installer mode’ and long-press ‘INST’
until the LED starts flashing red. The DucoBox will reboot (around 15 seconds) and the LED will stop flashing.
• Restore factory settings for the DucoBox and all paired components (AS FROM DucoBox version 18xxxx): Long-press ‘INST’
and ‘ENTER’ if not in ‘Installer mode’. The network remains in place.
• Use the Duco Network Tool to read out information from components.
07 Air calibration
The system needs to be configured for it to work correctly. This will ensure its operation is as quiet as possible and energy-efficient.
See under the Tools heading at www.duco.eu for information about determining ventilation flow rates.
07.A Air calibration procedure for DucoBox Silent
The air calibration procedure must be carried out on a calm day (no more than wind force 2: leaves rustling, fee-
ling the wind in one’s face).
Air calibrating the DucoBox Silent
1
Set all exhaust vents so they match the desired flow rate in accor-
dance with the table below. Proper pre-setting makes for rapid and
correct configuration.
Flow
rate
DucoVent
Design
DucoVent Basic
and other vents
75m³/h 100% open
50m³/h 50% open
25m³/h 25% open
When using DucoVent Design exhaust vents always leave the outer
ring in place for acoustic effect.
Example
Toilet Kitchen Bathroom Storeroom
2
Before activating air calibration mode:
• Close all windows and doors.
• Ensure that all duct openings in the DucoBox are fully closed and that the
DucoBox cover is closed!
• Avoid air leaks in the ventilation ducts.
• Set all window ventilators to the open position open

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3
Press ‘HIGH’ or ‘LOW’ to activate the configuration mode for 30minutes.
Then close the cover firmly.
Which configuration mode should I choose?
Button
Air calibration using 'HIGH'
This method is standard and has the
lowest consumption. Recommended
in the majority of homes.
Air calibration using 'LOW'
This method offers a boost mode
but may give rise to more noise
and higher consumption.
Low mode (10%) Low mode (14-33%)*
Medium mode (50%) High mode (100%)
High mode (100%) Boost mode (143-333%)*
The percentages in the table indicate what percentage of the flow rate configured will be extracted.
The configuration mode chosen does not affect the operation of the AUTO mode.
* In the ‘LOW’ configuration, the percentage in low mode and boost mode is dependent on the type of
home (see section "06.D Setting type of home" on page 7) and limited to the maximum achievable
ventilation system flow rate.
HIGH
LOW
4Close the DucoBox cover.
Ensure it forms an airtight seal with the DucoBox.
5Select the duct with the highest flow rate and restriction.
6
Measure at the vent and adjust the DucoBox rpm until the desired flow rate is
obtained. This can be done in two ways:
• Using the (lower) and (higher) buttons on a paired User controller or CO2/
Humidity Sensor*.
• Using the ‘DOWN’ and ‘UP’ buttons on the DucoBox. This requires the cover to
be removed temporarily. Always close the cover after every measurement.
Pressing the buttons once is equal to 1% (= approximately 2to3m³/h per press of the button depending
on the restriction in the ducts).
/
/
7Now measure the other vents. The flow rate from these other vents must only be
adjusted at the vents themselves.
8Repeat steps 6and 7until the desired flow rate has been obtained at each vent.
9
Exit configuration mode. This can be done in two ways:
• Long-press ‘AUTO’ on a paired User controller or CO2/Humidity sensor* until
the 4 LEDs light up white briefly and then turn yellow again.
• Press ‘ENTER’ in the DucoBox and then immediately close the cover on the
DucoBox. If the cover was not closed, you can pull the plug out of the power
socket for a few seconds after closing the cover in order to reboot the DucoBox.
The DucoBox will now perform a calibration by speeding up high. This may take up
to 1.5 min. Calibration will be complete once the DucoBox slows down the ‘AUTO’
button LEDs on the User controllers / CO2/Humidity sensors* will turn white, as
will the LED on the DucoBox.
ENTER
* Depending on the software version of the User controller / CO2/Humidity sensor.

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07.C Checking
The steps set out below can be used to check whether flow rates have been set correctly.
Checking configured flow rate
1
The configured flow rate is dependent on whether the ‘HIGH’ or ‘LOW’ configurati-
on mode has been chosen.
Press for ‘HIGH’ configuration (= standard) or for ‘LOW’ configuration on a
random control to have the system run for 15 minutes at 100% of the requested
flow rate.
2Measure the flow rate at the exhaust vents.
3After the check, the system can be reset to the desired ventilation mode. If you do
not do so, the system will revert automatically to the AUTO mode after 15 minutes.
08 Maintenance & service
Please refer to the maintenance instructions at www.duco.eu and view the videos on duco.tv for more information.
For service problems as a user:
Please contact your installer. Keep the serial number of your product
to hand.
For service problems as an installer:
Please contact your Duco products seller. Keep the serial number of
your product to hand.
09 Warranty
All warranty conditions concerning the DucoBox and Duco's ventilation systems can be found on the Duco website.
All complaints are to be reported to Duco by the Duco distributor with a clear description and the order/invoice number under
which the products were delivered. In order to register the complaint, please use the complaint registration form found on the Duco
website and the product's serial number in your message to serviceduco.eu.
Sticker inside the DucoBox

Installed by:
L2000651 Document last modified on 17.07.2019 (revision M)