Duco DucoBox Silent Series User manual

Installation guide
ENGLISH
DucoBox Silent Connect
Product version 17xxxx and above
Step by step
instructions
duco.tv
L2000641 (Revision H | 13.07.2020)

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L2000641 Installation guide for DucoBox Silent (Revision H | 13.07.2020)
Table of contents
01 Introduction............................................................................................................ 3
02 Product sheet ........................................................................................................ 4
03 Fitting ....................................................................................................................... 7
03.A Position ........................................................................................................... 7
03.B Fixing................................................................................................................ 7
03.C Air duct connections................................................................................... 7
04 Wiring....................................................................................................................... 8
04.A Connector & buttons .................................................................................. 8
04.B Cabling diagram........................................................................................... 8
05 Additional control options................................................................................. 9
05.A Boxsensors .................................................................................................... 9
05.B Communication Print...............................................................................10
06 Electronical installation ..................................................................................10
06.A Change settings .........................................................................................10
06.B Installer / User mode ...............................................................................10
06.C LED indications...........................................................................................11
06.D Setting type of home.................................................................................11
06.E Pairing components..................................................................................12
06.F Removing / replacing components......................................................12
06.G Tips .................................................................................................................13
07 Air calibration......................................................................................................13
07.A Air calibration procedure for DucoBox Silent Connect.................13
07.B Checking.......................................................................................................15
08 Maintenance & service.....................................................................................15
09 Warranty................................................................................................................15
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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L2000641 Installation guide for DucoBox Silent (Revision H | 13.07.2020)
01 Introduction
Congratulations on your DucoBox Silent Connect, the quietest box in Europe! The DucoBox Silent Connect 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 CO2content or humidity.
On the other it is the system ‘master’ or brain of the system. It receives and interprets signals from slave components (measure-
ments 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 exces-
sive fouling in the DucoBox, which affects its operation or has a more direct effect on output.
CO2
HIGH
LOW
INST
RH
Master
Slave

PRODUCT FICHE - Ref Delegated regulation (EU) n° 1253/2014
(English)
1 0 1 1
Manual control Clock control Central demand control Local demand control
(no DCV) (no DCV) (+ 1 sensor) (+ min 2 sensors)
cold -30,5 --40,7 -54,1
average -14,1 --19,8 -27,0
warm -4,8 --7,7 -11,5
cold B-AA+
average E-E B
warm F -F E
Unidirectional -Unidirectional Unidirectional
Variable speed -Variable speed Variable speed
None -None None
Not applicable -Not applicable Not applicable
400 -400 400
72,42 -72,42 72,42
45 -45 45
0,08 -0,08 0,08
50 -50 50
0,10 -0,10 0,10
1-0,85 0,65
Manual control -Central demand control Local demand control
Not applicable -Not applicable Not applicable
2,23% -2,23% 2,23%
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
120,2 -86,8 50,8
cold 3355 -4290 5536
average 1715 -2193 2830
warm 776 -992 1280
Specific energy consumption
(SEC) in (kWh/(m².an))
SEC class
Trade mark Duco
Model reference 0000-4250 / 0000-4455
DucoBox Silent Connect
Indoor/outdoor air tightness in (m³/h)
Annual electricity consumption (AEC) in (kWh
electricity/a)
Annual heating saved (AHS)
in (kWh primary energy/a)
DucoBox Silent Connect
Declared maximum external leakage
rates in (%)
Mixing rate in (%)
Position and description of visual filter
warning
Instructions to install regulated
supply/exhaust grilles
Pre-/dis-assembly instructions
Airflow sensitivity to pressure variations at +
20 Pa / -20Pa
Sound power level Lwa at reference flow rate
in dB(A))
Reference flow rate in (m³/s)
Reference pressure difference in (Pa)
SPI en (W/m³/h)
Declared maximum internal leakage
rates in (%)
Typology
Type of motor
Type of heat recovery
Thermal efficiency of heat recovery in (%)
Maximum flow rate in (m³/h)
Electric fanpower input at maximum flow rate
in (W)
Control factor and control typology
Instructions according to legislative regulations area of application
www.duco.eu
Ecodesign Delegated regulation (EU) n° 1253/2014 (Duco V20200701)
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02 Product sheet

PRODUCT FICHE - Ref Delegated regulation (EU) n° 1253/2014
(English)
1 0 1 1
Manual control Clock control Central demand control Local demand control
(no DCV) (no DCV) (+ 1 sensor) (+ min 2 sensors)
cold -31,0 --41,1 -54,3
average -14,6 --20,1 -27,2
warm -5,2 --8,1 -11,7
cold B-AA+
average E-D B
warm F -F E
Unidirectional -Unidirectional Unidirectional
Variable speed -Variable speed Variable speed
None -None None
Not applicable -Not applicable Not applicable
325 -325 325
45,73 -45,73 45,73
41 -41 41
0,06 -0,06 0,06
50 -50 50
0,08 -0,08 0,08
1-0,85 0,65
Manual control -Central demand control Local demand control
Not applicable -Not applicable Not applicable
2,74% -2,74% 2,74%
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
100,9 -72,9 42,6
cold 3355 -4290 5536
average 1715 -2193 2830
warm 776 -992 1280
Specific energy consumption
(SEC) in (kWh/(m².an))
SEC class
Trade mark Duco
Model reference 0000-5133
DucoBox Silent Connect 325
Indoor/outdoor air tightness in (m³/h)
Annual electricity consumption (AEC) in (kWh
electricity/a)
Annual heating saved (AHS)
in (kWh primary energy/a)
DucoBox Silent Connect 325
Declared maximum external leakage
rates in (%)
Mixing rate in (%)
Position and description of visual filter
warning
Instructions to install regulated
supply/exhaust grilles
Pre-/dis-assembly instructions
Airflow sensitivity to pressure variations at +
20 Pa / -20Pa
Sound power level Lwa at reference flow rate
in dB(A))
Reference flow rate in (m³/s)
Reference pressure difference in (Pa)
SPI en (W/m³/h)
Declared maximum internal leakage
rates in (%)
Typology
Type of motor
Type of heat recovery
Thermal efficiency of heat recovery in (%)
Maximum flow rate in (m³/h)
Electric fanpower input at maximum flow rate
in (W)
Control factor and control typology
Instructions according to legislative regulations area of application
www.duco.eu
Ecodesign Delegated regulation (EU) n° 1253/2014 (Duco V20200701)
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L2000641 Installation guide for DucoBox Silent (Revision H | 13.07.2020)
PRODUCT FICHE - Ref Delegated regulation (EU) n° 1253/2014
(English)
1 0 1 1
Manual control Clock control Central demand control Local demand control
(no DCV) (no DCV) (+ 1 sensor) (+ min 2 sensors)
cold -31,3 --41,3 -54,4
average -14,9 --20,3 -27,4
warm -5,5 --8,3 -11,9
cold B-AA+
average E-D B
warm F -F E
Unidirectional -Unidirectional Unidirectional
Variable speed -Variable speed Variable speed
None -None None
Not applicable -Not applicable Not applicable
225 -225 225
24,43 -24,43 24,43
37 -37 37
0,04 -0,04 0,04
50 -50 50
0,07 -0,07 0,07
1-0,85 0,65
Manual control -Central demand control Local demand control
Not applicable -Not applicable Not applicable
3,96% -3,96% 3,96%
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
Not applicable -Not applicable Not applicable
89,6 -64,7 37,8
cold 3355 -4290 5536
average 1715 -2193 2830
warm 776 -992 1280
Specific energy consumption
(SEC) in (kWh/(m².an))
SEC class
Trade mark Duco
Model reference 0000-5132
DucoBox Silent Connect 225
Indoor/outdoor air tightness in (m³/h)
Annual electricity consumption (AEC) in (kWh
electricity/a)
Annual heating saved (AHS)
in (kWh primary energy/a)
DucoBox Silent Connect 225
Declared maximum external leakage
rates in (%)
Mixing rate in (%)
Position and description of visual filter
warning
Instructions to install regulated
supply/exhaust grilles
Pre-/dis-assembly instructions
Airflow sensitivity to pressure variations at +
20 Pa / -20Pa
Sound power level Lwa at reference flow rate
in dB(A))
Reference flow rate in (m³/s)
Reference pressure difference in (Pa)
SPI en (W/m³/h)
Declared maximum internal leakage
rates in (%)
Typology
Type of motor
Type of heat recovery
Thermal efficiency of heat recovery in (%)
Maximum flow rate in (m³/h)
Electric fanpower input at maximum flow rate
in (W)
Control factor and control typology
Instructions according to legislative regulations area of application
www.duco.eu
Ecodesign Delegated regulation (EU) n° 1253/2014 (Duco V20200701)

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≥ 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.
1
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

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04 Wiring
04.A Connector & buttons
Boxsensor 2Boxsensor 1 HIGHDOWN LOWENTER INSTUP
Power
230 VAC
Fan
Duco
Wired
Antenna
Duco
Network
Tool
Switch
Contact
(n132)
GND B A
Blue Yellow Red White
Connector for
Communication Print
04.B Cabling diagram
The DucoBox Silent Connect is able to communicate with Duco slave components via a wireless (RF) or wired link. Both types of
communication can be combined in one system.
Communication with non-Duco components is possible via the Switch Sensor or one of the connections on the optional Communi-
cation Print (see page 10).
RF RF
Wired
RF
24 VDC 24 VDC
24 VDC
230 VAC 230 VACA AB BGND GND
BA GND
POWER
SUPPLY
User controller User controller Max 99 Wired
+ 25 RF
Tronic vent Tronic vent
230 VAC
230 VAC
DucoBox
Silent Connect 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.
≥ 30 cm
Strain relief
It is mandatory to place the power supply cable in the slot provided, as shown in the drawing, before powering up the DucoBox.
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.

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RF (wireless communication)
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
components that are unable to make a (strong) connection with the master
component are forwarded automatically via no more than one other non-bat-
tery-powered 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
Wired (cabled communication)
Wired components can be daisy-chained (= recommended). This means that a
separate cable will not be required for each component. A single central power
supply can be used.
The cable required is a 5x0.75 mm² data cable. We strongly advise using a shield-
ed cable. This is to prevent any interference that may affect the data communi-
cation. Any Tronic grilles will be supplied with a 5x0.25 mm² cable which can be
connected via a splicing terminal block.
DUCO WIRED
Power supply 24 VDC
Wiring
5 x 0.75 mm²
(5 x 0.25mm² from Tronic
grilles)
Maximum distance up to 300 m
Maximum number
of components
Up to 99 wired
components in a
single system
05 Additional control options
05.A Boxsensors
Boxsensors can be built into a DucoBox Silent Connect and provide
CO2and/or humidity measurement in an air duct. ADucoBox Silent
Connect can contain a maximum of oneCO2and oneHumidity
Boxsensor. If the living room (CO2measurement) and bathroom
(humidity measurement) 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 Connect PCB.
Settings
The CO2and RH setpoint can be changed using the Duco Network
Control Tool. See www.duco.eu for more information.
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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05.B Communication Print
With the optional Communication Print you have the option of al-
lowing the Duco ventilation systems to communicate via ModBus
and/or ethernet. ModBus integration enables them to be linked
to a building management system.
ModBus
Ethernet Micro SD-card
PWM-OUT
PWM-IN
Switch Contact 1 (n133)
Switch Contact 2 (n134)
Switch Contact 3 (n135)
GND
B
A
-
+
-
+
Connector for
DucoBox
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 us-
er-friendly software also enables problems in the system to be pinpointed. The Duco Network Tool is issued to every installer after
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
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 Connect ‘INST’ button (see drawing in section "04.A Connections &
buttons" on page 8.) 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.

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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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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 Connect
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 Connect. LEDs
on all components will stop flashing.
Please refer to the manual with the components for more detailed information.
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
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.

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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 Connect
The air calibration procedure must be carried out on a calm day (no more than wind force 2: leaves rustling, feel-
ing the wind in one’s face).
Air calibrating the DucoBox Silent Connect
1
Set all exhaust vents so they match the desired flow rate in accord-
ance 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 11) 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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L2000641 Installation guide for DucoBox Silent (Revision H | 13.07.2020)
07.B 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’ configura-
tion 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

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L2000641 Installation guide for DucoBox Silent (Revision H | 13.07.2020)
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L2000641 Document last modified on 13.07.2020 (revision H)