BLAUBERG VENTO Expert A50-1 W User manual

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USER’S MANUAL
EN
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Safety requirements..................................................................................................................................................................... 2
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 4
Technical data.................................................................................................................................................................................. 5
Design and operating principle ........................................................................................................................................... 6
Mounting and set-up.................................................................................................................................................................. 9
Connection to power mains .................................................................................................................................................. 12
Technical maintenance.............................................................................................................................................................. 20
Storage and transportation regulations.......................................................................................................................... 22
Manufacturer’s warranty........................................................................................................................................................... 23
Certificate of acceptance.......................................................................................................................................................... 27
Seller information.......................................................................................................................................................................... 27
Installation certificate.................................................................................................................................................................. 27
Warranty card................................................................................................................................................................................... 27
This unit is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the unit by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the unit.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Cleaning and user maintenance shall not be made by children without supervision.
Children shall not play with the appliance.
Connection to the mains must be made through a disconnecting device, which is integrated
into the fixed wiring system in accordance with the wiring rules for design of electrical units,
and has a contact separation in all poles that allows for full disconnection under overvoltage
category III conditions.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or
similarly qualified persons in order to avoid a safety hazard.
Ensure that the unit is switched off from the supply mains before removing the guard.
Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the
VENTO Expert (Duo) A30/50/85/100(C1)-1 (Pro3) W V.2 unit and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
CONTENTS
SAFETY REQUIREMENTS

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All operations described in this manual must be performed by qualified personnel only, properly
trained and qualified to install, make electrical connections and maintain ventilation units.
Do not attempt to install the product, connect it to the mains, or perform maintenance yourself.
This is unsafe and impossible without special knowledge.
Disconnect the power supply prior to any operations with the unit.
All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing
and operating the unit.
Disconnect the unit from the power supply prior to any connection, servicing, maintenance, and
repair operations.
Connection of the unit to power mains is allowed by a qualified electrician with a work permit
for the electric units up to 1000 V after careful reading of the present user’s manual.
Check the unit for any visible damage of the impeller, the casing, and the grille before starting
installation. The casing internals must be free of any foreign objects that can damage the
impeller blades.
While mounting the unit, avoid compression of the casing! Deformation of the casing may result
in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities, sticky substances, or fibrous
materials.
Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,
insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration
of its products at any time in order to incorporate the latest technological developments.
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES, READ THE RELEVANT USER MANUALS.
The appliance may adversely affect the safe operation of appliances burning gas or other
fuels (including those in other rooms) due to back flow of combustion gases. These gases can
potentially result in carbon monoxide poisoning. After installation of the unit the operation
of flued gas appliances should be tested by a competent person to ensure that back flow of
combustion gases does not occur.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS
SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE

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PURPOSE
The ventilator is designed to ensure continuous mechanical air exchange in flats, cottages, hotels, cafés and other domestic and public
premises. The ventilator is equipped with a regenerator that enables supply of fresh filtered air heated by means of extract air heat energy
recovery.
The ventilator is designed for installation on external walls.
The ventilator is rated for continuous operation.
NAME NUMBER
VENTO Expert VENTO Expert Duo
Indoor assembly unit of the ventilator 1 pc. 1 pc.
Air duct 1 pc. 1 pc.
Air flow separator - 3-6 pcs.
Silencer 1 pc. -
Assembled cartridge 1 pc. 1 pc.
Outer ventilation hood 1 pc. 1 pc.
Remote control 1 pc. 1 pc.
Cardboard mounting plate 1 pc. 1 pc.
Mounting kit 2 packings 2 packings
Foam wedges 1 set 1 set
User's manual 1 pc. 1 pc.
Mounting hood installation instruction 1 pc. 1 pc.
Packing box 1 pc. 1 pc.
DESIGNATION KEY
DELIVERY SET
VENTO Expert A-85 C1 -1 Pro3 WV.2
Unit version
V.2: Wi-Fi controllable, connection to PC is not required
Control system type
W: Wi-Fi connection of ventilators
Availability of protective shutters
_: model with automatic protective shutters
Pro3: model without automatic shutters, with manual blocking of air flow
Front panel modication
1: flat front panel
Modication of the regenerator
_ – standard regenerator 150 mm long
C1 – shortened regenerator 100 mm long
Rated air capacity [m3/h]
Air duct section shape
A: round
Ventilator series
Expert: series of reversible ventilators with unidirectional air flow
Expert Duo: series of reversible ventilators with bidirectional air flow

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The temperature in the room where the indoor unit of the ventilator is installed must be in the range from +1 ˚C to +40 ˚C with relative
air humidity up to 80 % (no condensation build-up).
If the conditions of use of the ventilator are outside the specified limits, turn off the ventilator.
Provide fresh air supply through windows.
The temperature of the transported air should be in the range from -15 ˚С to +40 ˚С.
The ventilator is rated as a class II electric appliance.
Ingress protection rating against access to hazardous parts and water ingress is IP24.
The unit design is constantly being improved, thus some models may be different from those described in this manual.
A A
LL
Air duct length
Wall thickness
Wall thickness is above the minimum Wall thickness is minimal
Outer ventilation
hood
Front panel Front panel
Cartridge Cartridge
Air duct length
Wall thickness
Outer ventilation
hood
A: protruding part of the air duct on the outer wall.
L: length of the cartridge, depending on the model of the ventilator.
The length of the duct and the model of the supplied hood depend on the
ventilator model (see Designation key).
The overall and connecting dimensions of the outer ventilation hood,
the required outside protrusion length of the air duct A and the mounting
sequence of the hood are stated in its mounting instruction.
The overall dimensions of the front panel are stated below.
Ventilator model L, mm
VENTO Expert A50/85-1 W V.2 250
VENTO Expert A50C1-1 (Pro3) W V.2 220
VENTO Expert A100-1 (Pro3) W V.2 355
VENTO Expert A100C1-1 (Pro3) W V.2 310
VENTO Expert Duo A30-1 W V.2 280
68
235
285
207
85
137
138
207
85
137
138
VENTO Expert VENTO Expert Duo
Длина воздуховода (толщина стены)
TECHNICAL DATA
Wi-Fi technical data
Standard IEFE 802,11, b/g/n
Frequency band [GHz] 2.4
Transmission power [mW] (dBm) 100(+20)
Network DHCP
WLAN safety WPA, WPA2

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Filters
Clean the air flowing through
the ventilator of dust and
foreign objects.
Prevent contamination of the
regenerator.
Front part of the indoor unit with a front panel
Fulfils the decorative function. The design enables to
shut off the air duct in case of an extended downtime of
the ventilator.
The front part of the Vento Expert Duo unit is used for air
filtration.
Back part of the indoor unit
The unit includes a circuit control board and basic controls located on the side part.
Back part of the indoor unit
The unit includes a circuit control board and
basic controls located on the side part.
VENTO Expert Duo cartridge
Construction consisting of fans and regenerators.
Generates air flow and provides heat recovery.
VENTO Expert cartridge
Construction consisting of fans, a regenerator and air filters.
Generates air flow and provides heat recovery.
Air duct
Plastic air duct.
Air ow separators
Designed for separation of
supply and exhaust air streams.
Outer ventilation hood
Prevents ingress of water and foreign objects into the ventilator.
Each ventilator model has a matching ventilation hood model.
Sound absorbing material
A layer of sound-absorbing material for attenuation of noise
generated during the ventilator operation.
VENTO Expert Duo
VENTO Expert
VENTILATOR DESIGN
The ventilator consists of an indoor unit with a decorative front panel, a cartridge, an air duct with a sound absorbing layer and an outer
ventilation hood.
The cartridge is a basic functioning part of the ventilator. The cartridge consists of the fans, the regenerator and two filters that ensure
rough air filtration and prevent ingress of dust and foreign objects into the heat exchanger and the fan.
The indoor assembly unit is equipped with automatic shutters that close during the ventilator standstill and prevent air backdraft.
The VENTO Expert Duo model has a set of air flow separators and an outer hood design that ensures that the exhaust and supply air
flows are directed in different directions.
The outer ventilation hood is used to prevent direct ingress of water and other objects to the ventilator.
DESIGN AND OPERATING PRINCIPLE
The technical data of the specific model are indicated on the label on the ventilator casing.

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AIR FLOW BLOCKING FOR THE VENTO Expert
Press the front panel to close the air duct. The fan turns off automatically. The unit functionality is not changed.
To open the air duct, pull the front panel while holding the special recesses. The fan starts operating according to the actual speed setting.
Air duct shut-off Air duct opening
The front panel incorporates an operating LED indicator. During the dark time the indicator light intensity drops down.
AIR FLOW BLOCKING FOR THE VENTO Expert Duo
To close the air duct, unlatch and detach the front part of the indoor unit from its back part.
Then, gently unfasten the latches and separate the front part of the front panel. Pull out the airflow separator with filters by pulling on one
of the side latches. Reinsert the front part of the front panel and gently push it in until it completely covers the duct.
The fan turns off automatically. The unit functionality is not changed.
Opening of the air duct is made in the reverse order. The fan starts operating according to the actual speed setting.
The front panel incorporates an operating LED indicator. During the dark time the indicator light intensity drops down.
OPERATING LOGIC OF THE AUTOMATIC SHUTTERS FOR VENTO Expert A30/50/85/100(C1)-1 W V.2
The indoor unit of the VENTO Expert A30/50/85/100(C1)-1 W V.2 ventilators is equipped with automatic shutters. During the ventilator
operation the automatic shutters are opened and let the air flow freely through the ventilator. The automatic shutters are closed for 2
minutes at the ventilator shut down.
The shutters are closed The shutters are open

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VENTILATOR OPERATION MODES
VENTO Expert VENTO Expert Duo
Ventilation –the ventilator runs either in the air exhaust or air
supply mode at a set speed.
In this mode some of the ventilators in the network run in the air
supply mode and the other ones in air exhaust mode, depending
on the position of the DIP switch No. 3 (See section DIP switch
positions).
Air supply (only available from a mobile device) - all ventilators in
the group supply air regardless of the position of the DIP switch #3
(see the section “DIP switch positions”).
Regeneration – the ventilator operates in the reverse mode with
heat and moisture regeneration, while it cyclically changes the
direction of air flow.
Cycle I. Warm stale air is extracted from the room and flows
through the ceramic regenerator, which gradually absorbs heat
and humidity. In 70 seconds, as the ceramic regenerator gets
warmed, the ventilator is switched to supply mode.
Cycle II. Fresh intake air from outside flows through the ceramic
regenerator, absorbs accumulated moisture and is heated up.
In 70 seconds, as the ceramic regenerator gets cooled down,
the ventilator is switched to air extraction mode and the cycle
is renewed. If two ventilators are installed, they operate with
opposite rotation directions in this mode. While one ventilator
supplies air, the other one extracts it.
Boost – the ventilator goes to the maximum speed without
changing the operation mode.
Ventilation –one of the fan fans exhausts air and the other
supplies air at the selected speed without changing the direction
of air flow.
Regeneration - one of the fans of the ventilator operates in the
exhaust mode, while the other one operates in the supply mode.
Each fan operates in the reverse mode with heat and moisture
regeneration, cyclically changing the direction of air flow.
Boost - when the sensor is triggered, the ventilator executes one
of two operation algorithms, which are set when setting up the
ventilator using the DIP switch #3 (see the section “DIP switch
position”). The DIP switch #3 is in the OFF position - the ventilator
operates in the exhaust mode at the third speed (both fans are
working to extract air). The DIP switch No. 3 in the ON position -
the ventilator operates at maximum speed without changing the
operating mode.
The ventilators are equipped with an air humidity sensor and terminals for connecting an external 0-10 V analogue sensor and an
external normally open contact (relay sensor). When either of these devices is triggered, the ventilator switches to the maximum speed
(Boost mode).
When the sensors return to their original position, the Boost mode turn-off delay timer starts.
In the relevant sections of the Blauberg Home mobile application, you can configure the following ventilator operation parameters:
• enable or disable the humidity sensor, 0-10 V analogue sensor, and relay sensor;
• set the threshold for the humidity sensor and 0-10 V analogue sensor;
• set the duration of the Boost mode turn-off delay (30 minutes by default);
• set the duration of the first speed timer (“Night mode”) (8 hours by default);
• set the duration of the third speed timer (“Party mode”) (4 hours by default).
If necessary, in the“Schedule of the Blauberg Home mobile application”section, you can set different speeds of the ventilator at different
time intervals by day of the week. For the weekly schedule to work correctly, you must set the current date and time correctly in the
“Date and time” section.
When simultaneously activating several operation modes that exclude each other, the ventilator selects the mode according to the
following priority:
1. Night mode timer or Party mode timer.
2. Standby.
3. Boost.
4. Weekly Schedule.
5. Standard operation mode.

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1. Prepare a round core hole in the outer wall. The hole size is shown in the figure below.
A
AA-A
ø 180
min 300
min 300
min 300
2. Insert the air duct in the wall hole. For ease of installation use the polystyrene wedges included in the delivery set. The air duct end must
protrude for the distance A that enables installation of the outer ventilation hood. The distance A is stated in the installation instruction
for the ventilation hood.
A
min 3 mm
Fill the gaps between the air duct
and the hole with mounting foam.
Polystyrene wedge
IWhen installing the air duct, ensure that the slope towards the street
is at least 3 mm downwards.
To cut the air duct either make preliminary calculations of the
required duct length or make sure to have access to the outer wall
after fixation of the air duct.
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT
DO NOT BLOCK THE AIR DUCT OF THE INSTALLED VENTILATOR WITH DUST
ACCUMULATING MATERIALS, SUCH AS CURTAINS, CLOTH SHUTTERS, ETC.
AS IT PREVENTS AIR CIRCULATION IN THE ROOM.
MOUNTING AND SETUP

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3. Fasten the supplied mounting template to the indoor wall using the adhesive tape. The large opening in the template must be coaxial
with the air duct. For aligning the template with respect to the horizon line it is recommended to use a builder’s level.
Then mark the fastening holes for installation of the supplied dowels and drill the holes to a required depth. Route the power cable of the
ventilator from the wall through the marked opening on the template.
207
Ø 5
Ø 160
87,5 138
103,5
137
85
Ø 23
Hole marking for fan fastening
4 holes
4. Press the side tabs to detach the front part of the indoor unit from its rear part.
ATTENTION!
For the VENTO Expert A50/85/100-1 W V.2
prior to mounting the front panel make
sure that the thermal actuator rod is in
the lowest position.
Blinking of the white led indicator
means that the thermal actuator is not
in the low position!
5. Fix the rear part of the indoor unit on the wall using the screws supplied with the mounting kit of the ventilator. Remove the two screws
that retain the transparent cover to enable access to the connection terminals.
6. Route the power cable as figured below and connect the
ventilator to power mains in compliance with the external wiring
diagram.
Fix the power cable and the signal cables with a cable clamp.
After completion of the electrical connection re-install the
transparent terminal cover in site.
Cable clamp

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7. Insert the cartridge in the air duct as shown below. During mounting make sure the pointer is directed upwards. Then fix the cable with
a clamp and connect the socket connector to the control board.
Lay the cables under the clamp
and connect the socket connector
to the control board.
The pointer must be
directed upwards
8. Install the front part of the indoor unit.
VENTO Expert VENTO Expert Duo
9. Insert the sound absorbing mat into the air duct. Roll the sound
absorbing mat to match the air duct diameter with the protecting
paper layer outside. Insert the roll in the air duct against stop to
the cartridge. Make a mark at the end of the air duct, remove the
sound absorbing mat and cut the roll according to the marking.
After that insert the ready roll into the air duct.
9. Install the sectional air flow separators from outside. Install a
required number of the air flow separators in the air duct against
stop to the cartridge. Mark the last air flow separator to be flush
with the air duct face, remove the last air flow separator from the
air duct and cut it according to the marking.
Install the adjusted air flow separators to the air duct.
10. Install the outer ventilation hood. For mounting guidelines of the ventilation hood please refer to the installation instruction for
the outer hood.

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ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED
AND WILL VOID THE WARRANTY.
The ventilator is rated for connection to single-phase AC 120 V ~ 60 Hz power mains.
The routing of the power and signalling cables is shown in the “Mounting and set-up” section.
For electric installations use insulated, durable and heat-resistant conductors (cables, wires) with the general cross section of 0.5 up to
0.75 mm for a power cable and 0.25 mm for signal cables.
The cable cross-section is given for reference only. The signal cable must be shielded.
The actual conductor cross-section selection must be based on its type, maximum permissible heating, insulation, length and installation
method. Use copper wires for all the electric connections!
Connect the unit to power mains via the terminal block installed in the control board in compliance with the wiring diagram and terminal
designation.
Connect the ventilator to power mains through an automatic circuit breaker with magnetic trip integrated into the home wiring system.
The tripping current of the circuit breaker must correspond to the current consumption (see the label on the ventilator casing).
The ventilator design enables connecting any external controls with a normally opened contact (NO contact), such as an external CO
sensor, a humidity sensor, a switch, etc.
When the NO contact of the external device is closed, the unit changes to the maximum speed.
An analogue sensor with output voltage 0-10 V is also compatible with the unit.
The diagrams below show two options for connecting the ventilator to the power supply depending on the location of the terminals on
the board.
Use the one that corresponds to the location of the terminals on your ventilator.
POWER OFF THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
THE UNIT MUST BE CONNECTED TO POWER SUPPLY BY A QUALIFIED ELECTRICIAN.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL.
CONNECTION TO POWER MAINS
1a
2a
N
L (~)
N (~)
L
NO1
NO2
QF*
+12V
I1
Gnd
Input for 0-10 V
analogue sensor
NO contact of the
external device
(relay sensor)
Power supply
AC 100-240 V
50/60 Hz
N
L
N
L (~)
N (~)
L
i1
Gnd
NO1
NO2
+12V
QF* 1a
2a
Power supply to
the next ventilator
Input for 0-10 V
analogue sensor
NO contact of the
external device
(relay sensor)
Power supply
AC 100-240 V
50/60 Hz

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PRESETTING OF THE VENTILATOR
Prior to operating the ventilator set it up using the DIP switch. It is located on the controller circuit board. To access the DIP switch, take
off the front panel of the indoor unit and uplift the rubber plug that covers the switch.
ON DIP
1 2 3 4
DIP switch and USB
connector under
the cover
POSITIONING OF THE DIP SWITCHES
Dening the role of the ventilator when operating in a group
1
OFF - master unit (hereinafter referred to as“Master unit”)
1
ON - slave unit (hereinafter referred to as“Slave unit”)
Standby mode setup
2
OFF - the ventilator is switched off in the Standby mode.
2
ON - the ventilator operates at Speed I in the Standby mode.
Adjusting the airow direction of the VENTO Expert in Ventilation mode
and when working as part of a group
3
OFF - operation in air extraction mode.
3
ON - operation in air supply mode.
Setting the Boost mode (when any of the sensors is triggered) for the VENTO Expert Duo model
3
OFF - when the sensor is triggered, the fan operates in the exhaust mode at the third speed.
3
ON - if the sensor is triggered, the fan operates in the current mode at the third speed.
Restore factory default settings
4
OFF – standard operation of the unit.
4
ON - restore factory default settings. For this purpose, move the switch on the operating ventilator to the ON position,
after the sound signal turn the switch to the OFF position.

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The figure below shows the control buttons on the indoor unit and the remote control with a brief description of their function.
Turning ventilator on/off
Speed selection
Speed/Standby
The speed selection sequence
is follows: I-II-III-Standby.
Regeneration mode
The fan rotation direction changes to
opposite each 70 seconds.
This operation mode enables heat
regeneration.
Ventilation mode
VENTO Expert
The ventilator runs in the extract or
in the supply mode at the set speed.
VENTO Expert Duo
One fan runs in the extract mode and
the other one in the supply mode
at the same speed.
The air direction is not changed. Party mode. Activation of the
speed III according to the timer
(the default setting is 4 hours).
Night mode. Activation of the
speed I according to the timer
(the default setting is 8 hours).

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VENTILATOR CONTROL WITH THE BUTTONS ON THE INDOOR UNIT
The table below shows the buttons and indicators on the indoor unit of the ventilator with a detailed description of their purpose and
functionality.
The speed selection sequence is follows: I-II-III-Standby. All the units integrated in a single network operate
according to the speed settings of the Master unit.
I: permanent indicator glowing indicates operation of the unit at Speed I. Indicator blinking indicates activation
of the Night mode timer.
Iand II: permanent glowing of the indicators I and II indicates running of the ventilator at the medium speed.
I, II and III: permanent glowing of the indicators I, II and III indicates running of the ventilator at the high speed.
Synchronous blinking of the indicators I, II and III indicates activation of the timer in Party mode or the turn-off
delay timer in the Boost mode in case of actuation of the connected external sensors or the integrated humidity
sensor.
Alternate blinking of the indicators I, II and III indicates that the ventilator runs at the speed set with the mobile
application using the slider selector for manual speed setting or that the Weekly Schedule mode is activated.
Regeneration mode
VENTO Expert
The rotation direction of both fans changes to opposite every 70 seconds. Heat recovery is performed in this
mode. To enable reverse phase operation of the ventilators, change the position of DIP switch No. 3.
VENTO Expert Duo
The rotation direction of both fans changes to opposite every 70 seconds. Heat recovery is performed in this
mode.
Ventilation mode
VENTO Expert
The ventilator operates in the supply or extraction mode at a set speed. The fan rotation direction depends on
the position of the DIP switch 3.
VENTO Expert Duo
One of the ventilator fans operates in exhaust mode, the other in supply mode at the selected speed without
changing the direction of air flow.
No glowing of the indicators “Regeneration” and “Ventilation” indicates forced operation of the ventilation unit in the air supply
mode. This mode may be activated only via the mobile application.
Filter
90 days after installation of the cartridge the filter replacement indicator starts glowing. In this case, clean or
replace the filters (see section Technical maintenance).
After replacement of the filters reset the timer using the mobile application or by pressing and holding the
button on the Master ventilator indoor unit for 5 seconds until a signal sounds.
Alarm
Alarm indicator.
In case of failure, the Alarm indicator on the indoor unit glows or blinks.
Reasons of Alarm blinking:
Battery charge is below the low level.
No connection between the Master unit and the router.
Alarm shutdown of the ventilator.
If several interconnected ventilators are running in the group, in case of alarm shutdown of the VENTO Expert
ventilator, all of the ventilators of this group also stop. The alarm indicator blinks on the defective ventilator and
glows on the other connected ventilators.
At the same time, the ventilators of the VENTO Expert Duo series included in this group continue to operate.
In case of an emergency shutdown of the VENTO Expert Duo series ventilator, the faulty ventilator does not affect
the operation of other ventilators in the same group.
In case of communication loss of the Master unit with the router for longer than 20 seconds, the Master unit switches
to Standby mode (Alarm indicator blinking) and the Slave units will signal that there is no communication with
the Master unit (see the description of the Master indicator).
After resuming communication, the Slave units are automatically synchronised with the Master unit.
Master
Permanent glowing of the indicator shows the leading unit in the network (Master unit).
Indicator blinking indicates the driven unit (Slave unit) and no connection to the Master unit.
No glowing of the lamp indicator means that this ventilation unit is a Slave ventilation unit and it is connected
to a Master unit.
Synchronous blinking of all the lamp indicators on the casing of the ventilator indicates that the Setup mode is enabled.

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REMOTE CONTROL OF THE VENTILATOR
The table below shows the buttons on the remote control with a detailed description of their purpose and functionality.
ON/Standby. The Standby mode depends on the position of the DIP switch #2 (see“DIP switch position”section).
The same button is used to reset alarms (Alarm) and turn off the timers.
Ventilator speed selection: Speed III-II-I respectively.
Regeneration mode
VENTO Expert
The rotation direction of both fans changes to opposite every 70 seconds. Heat recovery is performed in this
mode. The fan rotation direction depends on the position of the DIP switch 3.
VENTO Expert Duo
The rotation direction of both fans changes to opposite every 70 seconds. Heat recovery is performed in this
mode.
Ventilation mode
VENTO Expert
The ventilator operates in the supply or extraction mode at a set speed. The fan rotation direction depends on
the position of the DIP switch 3.
VENTO Expert Duo
One of the ventilator fans operates in exhaust mode, the other in supply mode at the selected speed without
changing the direction of air flow.
Timer control buttons:
Party mode: the timer activates operation of the ventilation unit at Speed III for a set time period, 4 hours by
default. The timer setting may be changed during setup of the unit on mobile device.
Night mode: the timer activates operation of the ventilation unit at Speed I for a set time period, 8 hours by
default.
The timer setting may be changed during setup of the unit on mobile device.
The ventilation unit reverts to operation with a previous speed setting upon elapse of the set time period.
Press any speed setting key to deactivate the timer or press the timer control button once again.
REMOTE CONTROL OF THE VENTILATOR WITH A BLAUBERG HOME APP
Download the Blauberg Home application and install it on the mobile device.
Blauberg Home – App Store Blauberg Home – Play Market
The ventilator works as a Wi-Fi access point named FAN by default: + 16 ID Number characters) stated on the ventilator casing under the
front panel.
Wi-Fi access point password: 11111111.
To connect, follow the instructions in the mobile app. In the app, you can configure the ventilator to connect via your home Wi-Fi network
and via a cloud server.
CONTROLLING THE VENTILATOR USING THE SMART HOME SYSTEM
The ventilators must be connected to the Smart home system in compliance with user’s manual for this application.

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WIRELESS CONNECTION OF SEVERAL VENTILATION UNITS
The ventilators can be combined into a group in which one ventilator acts as a Master device and the others are connected to it as Slaves.
If the ventilator is a Master unit, Slave units and mobile devices connect to it via Wi-Fi. The Master unit is operated by means of a mobile
device, the remote control or the touch buttons on the unit casing. The control signal is automatically transmitted to all the Slave units
in the network.
In this mode the unit responds to a signal from sensors (humidity sensor, external digital sensor, external analogue sensor 0-10 V) and
changes its operation mode respectively.
If the ventilator is a Slave unit, it only receives control signals from the Master ventilator. Any other signals from other controls are ignored.
In this mode the VENTO Expert ventilators also ignore the sensor signals. In case of communication loss with the Master unit above 20
seconds, the unit switches to Standby mode.
Sensor operation
VENTO Expert ventilators only respond to sensor signals when they are in the master role.
VENTO Expert Duo ventilators always respond to sensor signals, regardless of their role in the group.
If any of the sensors in the VENTO Expert are triggered, all VENTO Expert ventilators in the group will go to maximum speed, while the
VENTO Expert Duo ventilators continue to operate at the same speed.
If any of the sensors in the VENTO Expert Duo are triggered, only that ventilator goes to the maximum speed in the humidity control
scenario, while the other ventilators in the network continue to run without increasing the speed.

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VENTILATOR WIRELESS CONNECTION DIAGRAMS
Wiring diagram 1
Connection of up to 8 Slave units or mobile
devices to the Master unit with its own wireless
access point.
If eight Slave ventilators are connected to a Master
ventilator with a Wi-Fi access point
you cannot connect a mobile device!
Master
with a Wi-Fi access point
Slave No. 1 Slave No. 2 Slave No. N
Mobile device
Wiring diagram 2
The Master units, the Slave units and the mobile
devices are connected to a wireless access point
of the Wi-Fi router. In this case, the Master unit
can operate with the number (N) of Slave units,
limited by the technical characteristics of the
router.
Master Slave No. 1 Slave No. N
Mobile device Mobile device
Router
with its wireless access point
If the Wi-Fi router capacity is not enough to
connect a required number of the units, you may
use an extra wireless access point to connect the
other the unit. Several Master units can optionally
be connected to the network for arranging a
zone control.
Master Slave No. 1 Slave No. N
Mobile device Mobile device
Router
with its wireless access point
Slave No. N+1 Slave No. N+N
Mobile device Mobile device
Extra wireless access point

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SPECIAL SETUP MODE
In the event of losing the Wi-Fi password or the master ventilator password or in other cases, use the special Setup mode to restore access
to the ventilator functions.
To enter the special Setup mode, press and hold the Ventilation button on the ventilator casing for 5 seconds until the beep and
blinking of all the LED lights.
The ventilator will continue in this mode for 3 minutes and then automatically revert to the previous settings.
To exit the Setup mode immediately, press and hold the Ventilation button on the ventilator casing once again for 5 seconds
until the beep and shutdown of all the LED lights.
In this mode the following settings are available for the Master unit:
• Wi-Fi network name: Setup mode.
• Wi-Fi password: 11111111.
• The unit password is ignored.
REPLACEMENT OF THE BATTERY
When the battery is low, the Alarm indicator on the unit casing will blink. The mobile app will also display the warning and show the
following message on pressing the indicator icon. Low battery power may cause disruptions in the weekly schedule operation. Power off
the unit before replacing the battery. After replacing the battery reset the time and date.
The battery is located on the control board. To replace the battery, power off the ventilator, remove the front panel and the cover
protecting the control circuit board. Remove the battery and install the new one.
The battery type is : CR1220.
WHEN SETTING UP THE CONNECTION OF THE DEVICES, IT IS NECESSARY THAT
ALL SLAVE VENTILATORS ARE WITHIN THE WIFI COVERAGE AREA OF THE MASTER
VENTILATOR.
AFTER CHANGING THE WIFI PARAMETERS OF THE MASTER VENTILATOR, RECONNECT
THE VENTILATORS
CONNECTING MASTER AND SLAVE VENTILATORS
To create a group of ventilators that are linked together as a Master and Slave, follow these steps:
• Set the DIP switches on each ventilator to the position that corresponds to its role in the group (see “DIP switch position”).
• Then configure the Wi-Fi settings of the Master ventilator by following the instructions in the Blauberg Home mobile app.
• Set the Master ventilator to the special mode as described above, and all LEDs on the ventilator casing will start flashing. Repeat the
steps with all the Slave units and wait for the beep when all the LED lights stop blinking on each Slave unit. Set the Master unit to the
normal operation mode. Press and hold the Ventilation button.
Note: if the home router works in conjunction with several Wi-Fi access points requiring connection of ventilators to different access
points:
• Connect the Master unit to the first Wi-Fi access point.
• Complete the connection with the first group of Slave units.
• Connect the Master unit to the second Wi-Fi access point.
• Complete the connection with the second group of Slave units.

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Maintenance of the ventilator means regular cleaning of the ventilator surfaces of dust and cleaning and replacement of the filters.
To enable access to the main units, follow the procedure described below. The ventilator must be previously turned off using the remote
control or the buttons on the indoor unit. Then turn off power supply completely.
VENTO Expert
1. Press the latches on the side of the indoor control unit to take off the front part.
Please make sure the thermal actuator rod is in lower position during re-installation of the front panel. If the thermal actuator
rod is up, please wait for about 2 minutes until it goes down.
Warning! For the
VENTO Expert A50/85/100-1 W V.2
models prior to mounting the front
panel make sure that the thermal rod
is in the low position and the
indicator of the circuit board doesn't
VENTO Expert Duo
1. Press the latches on the side of the indoor control unit to take off the front part. Then detach the front panel from the front part by gently
unlatching the latches. Pull out the filters for cleaning. Reassemble in the reverse order.
2. Disconnect the connector from the circuit board.
Do not remove the connector by pulling the wires. Use a flat screwdriver to uplift it, if required.
VENTO Expert
Disconnect the socket
connector from the control
board
VENTO Expert Duo
Disconnect the socket
connector from the control
board
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING THE
PROTECTION
TECHNICAL MAINTENANCE