BLAUBERG Ventilatoren Vento Eco A50-4 Pro Series User manual

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USER'S MANUAL
EN
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SAFETY REQUIREMENTS
• Please read the user’s manual carefully prior to installing and operating 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.
• The warnings contained in the user’s manual must be considered most seriously since they contain vital personal safety
information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control, the user’s manual must be turned over to the receiving operator.
CONTENTS
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about the purpose, technical details, operating principle, design, and installation of the
Vento Eco(2) A50-4 Pro unit (-s) and all of its (their) 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.
The information in this user’s manual is 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.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means in any information
search system or translated into any language in any form without the prior written permission of the Company.
UNIT INSTALLATION AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from power mains prior
to any installation operations. • Unpack the unit with care.
• The unit must be grounded!
• While installing the unit, follow the safety
regulations specific to the use of electric
tools.
Safety requirements..................................................................................................................................................................... 2
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 4
Technical data.................................................................................................................................................................................. 5
Unit design and operating principle................................................................................................................................. 6
Installation and set-up................................................................................................................................................................ 8
Connection to power mains and control....................................................................................................................... 11
Technical maintenance.............................................................................................................................................................. 15
Troubleshooting............................................................................................................................................................................. 16
Storage and transportation regulations.......................................................................................................................... 16
Manufacturer's warranty........................................................................................................................................................... 17
Certificate of acceptance.......................................................................................................................................................... 19
Seller information.......................................................................................................................................................................... 19
Installation certificate.................................................................................................................................................................. 19
Warranty card................................................................................................................................................................................... 19

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• Do not change the power cable length
at your own discretion. Do not bend the
power cable. Avoid damaging the power
cable. Do not put any foreign objects on the
power cable.
• Do not lay the power cable of the unit in
close proximity to heating equipment.
• Do not use damaged equipment or cables
when connecting the unit to power mains.
• Do not operate the unit outside the
temperature range stated in the user’s
manual. Do not operate the unit in
aggressive or explosive environments.
• Do not touch the unit controls with wet
hands. Do not carry out the installation and
maintenance operations with wet hands.
• Do not wash the unit with water. Protect
the electric parts of the unit against ingress
of water.
• Do not allow children to operate the unit. • Disconnect the unit from power mains prior
to any technical maintenance.
• Do not store any explosive or highly
flammable substances in close proximity to
the unit.
• When the unit generates unusual sounds,
odour, or emits smoke, disconnect it from
power supply and contact the Seller.
• Do not open the unit during operation. • Do not direct the air flow produced by the
unit towards open flame or ignition sources.
• Do not block the air duct when the unit is
switched on.
• In case of continuous operation of the unit,
periodically check the security of mounting.
• Do not sit on the unit and avoid placing
foreign objects on it. • Use the unit only for its intended purpose.
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 wall flush mounting.
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT
THE APPROPRIATE TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED
ACCESS BY UNATTENDED CHILDREN.
The unit is rated for continuous operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).
DELIVERY SET
DESIGNATION KEY
Vento Eco2 A 50 -4 LS11 Pro
Control panel
Pro: sensor control panel
Ventilation hood model
Air duct length
_: 500 mm
L: 700 mm
Internal grille type
4: white internal grille with a smooth panel
Rated air ow [m/h]
Air duct cross section
A: round
Ventilator series
Vento Eco : series with one ventilator and one control panel
Vento Eco2: series with two ventilators and one control panel
Name
Quantity
Vento Eco A50-4 Pro Vento Eco2 A50-4 Pro
Air duct 1 pc. 2 pcs.
Sound absorbing material 1 pc. 2 pcs.
Assembled cartridge 1 pc. 2 pcs.
Indoor unit 1 pc. 2 pcs.
Outer ventilation hood 1 pc. 2 pcs.
Control panel 1 pc. 1 pc.
Fastening set 1 packing 1 packing
Mounting box 1 pc. 1 pc.
User's manual 1 pc. 1 pc.
Packing box 1 pc. 1 pc.

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TECHNICAL DATA
The ventilator is rated for indoor application with the ambient temperature ranging from -15 °C (5 °F) up to +40 °C (104 °F) and relative
humidity up to 50 %.
The unit 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 slightly different from those described in this manual.
Technical specifications of the particular model are indicated on the unit casing.
Ø 160 (6 5/16")
Air duct length (wall thickness)
A
Outer ventilation hood
Indoor unit
215
(8 7/16")
60
(2 3/8")
250
(9 13/16")
160
(6 5/16")
160
(6 5/16")
80
(3 1/8")
80
(3 1/8")
55
(2 3/16")
55
(2 3/16")
Overall dimensions of the indoor unit [mm] (inch)
The air duct length depends on the unit model, refer to the Designation Key
section, page 4.
Air duct length
Vento Eco A50-4 Pro 250 (150*)-500 (10”(6”)-20”)
Vento Eco A50-4 Pro L 250 (150*)-700 (10”(6”)-28”)
*Minimum air duct length with a hood for thin walls EH-2.
The supplied ventilation hood model depends on the ventilator model. The
overall dimensions of the outer ventilation hood and the A distance are stated
in the installation instruction.
The overall dimensions of the front panel are stated below.

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UNIT DESIGN AND OPERATING PRINCIPLE
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 a fan, a regenerator and two filters that ensure rough
air filtration and prevent ingress of dust and foreign objects into the regenerator and the fan.
The indoor unit is equipped with a manually actuated air damper.
WARNING! Air damper closing does not turn o the ventilator, but only blocks the air ow.
The external protective grille or the ventilation hood on the outer wall prevents ingress of water and foreign objects into the ventilator.
 86 mm (3 /")
R 2 mm
(/")
4 mm (/")
42.5 mm (1/")
13.5 mm (/")
68 mm (2 /")
 82 mm (3 /")
M1 M2
Overall dimensions of the control panel [mm] (inch)
Control panel
The sensor panel contains touch buttons for
unit control and an emergency indicator.
Electrical parameters of the control panel
Supply voltage, 50 (60) Hz [V] 100–240
Temperature range [°C] (°F) from +10 (+50) up to +45 (+113)
Humidity range [%] 10-80 (no condensation)
Service life, number of operating hours 100 000
Ingress protection rating IP30
Weight [g] 190

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Front part of the indoor unit
Fulfils the decorative function. It is a part of the indoor unit design and directs the air flow upwards.
Back part of the indoor unit
Designed for fixing the indoor unit to the wall, contains a swivel damper for closing
the air duct in case of prolonged downtime of the ventilator.
Cartridge
Construction consisting of a fan, a regenerator and filters.
Generates air flow, provides heat recovery and air cleaning.
Swivel damper
Air duct
Plastic air duct.
Outer ventilation hood
Prevents ingress of water and foreign objects into the ventilator.
Each ventilator model has a matching outer hood model.
Sound absorbing material
A layer of sound-absorbing material for attenuation
of noise generated during the ventilator operation.
Ventilator design
VENTILATOR OPERATION MODES
The ventilator has two operation modes:
Ventilation: the ventilator runs either in extract or supply mode at a set speed.
In this mode, when two ventilators are installed, one of them supplies and the other one extracts the air.
Regeneration: the ventilator runs in two cycles, 70 seconds each, with heat and humidity regeneration.
• 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 to
the room temperature. In 70 seconds, as the ceramic regenerator gets cooled down, the ventilator is switched to air extract 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.

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INSTALLATION AND SETUP
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
MAKE SURE THAT THE CONTROL PANEL IS NOT DAMAGED.
DO NOT USE A DAMAGED CONTROL PANEL! DO NOT INSTALL THE CONTROL PANEL ON
AN UNEVEN SURFACE! WHILE TIGHTENING THE SCREWS, DO NOT APPLY EXCESSIVE
FORCE TO PREVENT THE CONTROL PANEL CASING DEFORMATION.
WALL-MOUNTED CONTROL PANEL INSTALLATION
Control panel mounting:
1.Prepare a hole in the wall
and route all the wires to the
installation place. Insert the
supplied mounting box for flush
wall mounting. The mounting
box is included in the delivery
set.
2. Use a screwdriver to carefully
undo the clips on the backside
of the control panel and remove
the back cover.
3. Screw the backside of the
casing to the mounting box
through the fastening holes.
Fastening screws for control
panel mounting are included in
the control panel delivery set.
Then connect the cable to the
control panel in compliance
with external wiring diagram.
4. Install the control panel
display and press it to fix.

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READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
VENTILATOR MOUNTING
1. Prepare holes for the air ducts.
Prepare one or two round core holes in the outer wall, depending on the ventilation system equipment. For efficient operation of the
ventilation system it is recommended to install the ventilators as far apart from one another as possible. While preparing a core hole
make preparations for layout of the power cable and other required cables. The core hole size and minimum distance to a mounting
surface, for example, a wall, ceiling or a window as well as the minimum distance between the ventilators are shown below.
min 1 m
min 1 m
min 1 m
min 500 mm
Ø 180 mm
min 500 mm
min 500 mm
2. Prepare air ducts of required length.
AB
L
Measure the wall thickness B.
The air duct length is calculated as L = B + A, where A means an air duct
segment that protrudes in the outer wall to enable installation of the
external grille or the outer ventilation hood.
Distance A is stated in the installation instruction for the ventilation hood.
Cut the air duct to the length L
DO NOT BLOCK THE AIR DUCT OF THE INSTALLED UNIT WITH DUST ACCUMULATING
MATERIALS, SUCH AS CURTAINS, CLOTH SHUTTERS, ETC. AS IT PREVENTS AIR
CIRCULATION IN THE ROOM.

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3. Insert the sound-absorbing layer in the air duct.
Prior to installation adjust its length with respect to the dimensions of the
cartridge, the indoor unit, and the outer hood.
Insert the cartridge during adjustment in the air duct and cover it with the
internal grille. Roll the sound-absorbing layer to match the air duct diameter
with the protecting paper layer outside and insert the roll in the air duct
against stop.
Do not remove the paper layer!
1
2
50 mm (2”)
1
Ventilator with an internal grille
Mark the sound-absorbing layer at the end of the air duct as 1. From the
mark 1 measure 50 mm (2’’) and make the mark 2. Cut the excessive part of
the sound-absorbing layer.
Insert the adjusted and ready sound-absorbing layer into the air duct.
No glue is required for fixation!
1
Ventilator with an outer hood (option).
Mark the sound-absorbing layer at the end of the air duct as 1. Cut the
excessive part of the sound-absorbing layer.
Insert the adjusted and ready sound-absorbing layer into the air duct.
No glue is required for fixation!
4. Insert the air duct in the wall.
Fill the gaps between the wall
and the hole with a mounting
foam.
Foam wedge
min 3 mm
Install the air duct with the minimum slope 3 mm downwards. Fill the gaps
between the wall and the hole with a mounting foam.
5. Secure the back part of the indoor unit by leading the cable through the hole. Insert the cartridge into the air duct. Disconnect the
connector on the cartridge wire and connect the wires (laid from the control panel in accordance with the diagram on page 12) to the
mating part. Connect the parts of the terminal block.
6. Install the front panel of the indoor unit and fasten the outer ventilation hood.
Front part of the
indoor unit
Back part of the
indoor unit
Outer ventilation hood
(option)
For mounting of the outer ventilation hood, please refer to a respective hood installation instruction.

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CONNECTION TO POWER MAINS AND CONTROL
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.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED
AND WILL VOID THE WARRANTY.
The ventilator is rated for connection to single-phase AC 100-240 V/50 (60) Hz power mains.
The ventilator is connected to power mains using insulated, durable and heat-resistant conductors (cables, wires) with a cross section of
at least 0.5-0.75 mmthrough the automatic circuit breaker with a magnetic trip built into the stationary wiring. The circuit breaker trip
current must be selected depending on the ventilator current consumption. For details, please refer to the table on page 5.
The actual conductor cross-section selection must be based on its type, maximum permissible heating, insulation, length and installation
method.
When choosing a signal cable, follow these guidelines:
• Always use a shielded cable.
• The cross-section of the conductors, depending on the length, is selected according to the table below.
Cable length [m] The minimum cross-section of the wires in the cable [mm]
<5 0.25
<10 0.5
<15 0.75
<30 1.5
• Lay a signal cable in compliance with the requirements of the relevant regulatory documents.
• Connect the signal cable shield to the terminals„-“ of the control panel and the fan. Use copper wires for all the electric
connections!
• Connect the ventilator to power mains in compliance with the wiring diagram.

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EXTERNAL CONNECTIONS WIRING DIAGRAM OF THE VENTILATOR WITH A CONTROL PANEL
Each unit is connected as an
air exhaust unit
Each unit is connected as an
air supply unit
100–240 V
50 (60) Hz
-
+
P1
T1
L
N
-
+
P2
T2
-
+
P2
T2
BLACK RED BLUE YELLOW
BLACK RED BLUE YELLOW
T P + -
100–240 V
50 (60) Hz
-
+
P1
T1
-
+
P1
T1
L
N
-
+
P2
T2
T P + -
BLACK RED BLUE YELLOW BLACK RED BLUE YELLOW
100–240 V
50 (60) Hz
-
+
P1
T1
-
+
P1
T1
L
N
-
+
P2
T2
-
+
P2
T2
supply
Two units are connected to the control panel
extract
T P + - T P + -

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VENTILATOR CONTROL
The ventilator is operated with a control panel.
WARNING!
• The control panel must be fixed on a surface in operational position!
• Do not switch the buttons on the unsecured panel to avoid false speed switching!
• Pressing the buttons quickly and shortly may result in malfunction of the unit!
• Press the button precisely in the desired sector of the control panel to switch the speed.
The following parameters are set with the control panel:
• Ventilator speed stage: I, II, III;
• Operation mode: Regeneration or Ventilation;
• Timer-based operation of the ventilator: 4 hours at speed III or 8 hours at speed I.
The control panel displays the following parameters:
• current ventilator speed;
• current operation mode of the ventilator;
• timer operation status (on/off )
• filter replacement/cleaning need according to indications of the filter timer (factory setting 90 days)
• emergency shutdown of the ventilator in case of a motor failure.
In case of power cut-off, the set parameters are saved in the non-volatile memory of the control panel.
DESCRIPTION OF FUNCTIONS OF THE CONTROL PANEL BUTTONS
Timer
Speed III
4 hours
Speed III
Speed II
Speed I
Timer
Speed I
8 hours
REGENERATION
VENTILATION
The ALARM indicator glows in case of emergency stop
of the motor, as a result of which the unit stops.
Resetting alarm indication:
press and hold the ALARM indicator until the
indicators start blinking rapidly.
After expiry of the period set for the filter timer (factory
setting 90 days) the FILTER contamination indicator
starts glowing. In this case, clean or replace the filters
and reset the filter timer.
Resetting the filter timer and the filter replacement
indication: press and hold the FILTER indicator.
Turning the unit on Press any of speed selection buttons , , or the timer buttons , .
Turning the unit o Press the active speed button , , or the active timer button , , if no speed button is active.
Unit speed selection Press the inactive speed button , , .
Unit operation mode selection Press the inactive REGENERATION or VENTILATION button.
The direction of air flow in the unit (supply and extract mode ) is set when connecting the unit according to the
external connections wiring diagram.
Turning the timer on Press the TIMER button or .
Timer selection Press the inactive TIMER button or .
Turning the timer o Press the active TIMER button or .
If the timer period expires:
• The unit continues operation at a set speed. The speed can be selected before switching on the
timer as well as during the timer-based operation.
• The unit turns off if the speed was not selected.

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AIR DUCT CLOSING
Open
Close
The indoor unit has a swivel damper. To open or close the air duct, turn one of
the handles on the side walls of the indoor unit until it stops, as shown in the
figure. The vertical position of the handle corresponds to the position OPEN,
the horizontal position - to the position CLOSED.
WARNING! Air damper opening or closing does not turn the ventilator on
or o!

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TECHNICAL MAINTENANCE
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE
ANY MAINTENANCE OPERATIONS!
Maintenance of the ventilator means regular cleaning of the ventilator surfaces of dust and cleaning or replacement of the filters.
To access the basic assembly units follow the steps:
Remove the front part of the indoor unit, disconnect the connector and remove the cartridge from the air duct by pulling the cord.
Remove the filters from the cartridge.
Clean the filters as they get clogged, but not less than once in three months.
• After expiry of the period set for the hour meter (factory setting 90 days) the filter replacement indicator appears on the
control panel display.
• Wash the filters and let those dry out completely. Then install the dry filters in the air duct.
• Vacuum cleaning is allowed.
• To reset the filter timer, press and hold the button for 4-5 seconds.
• The filter rated service life is 3 years.
• For new filters contact the Seller.
Even regular technical maintenance may not completely prevent
dirt accumulation on the regenerator and the fan.
• Clean the regenerator regularly to ensure its high heat recovery
efficiency.
• Vacuum clean the regenerator not less than once a year.

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STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 °C (+41 °F) to + 40 °C (+104 °F) and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at
least 3-4 hours.
TROUBLESHOOTING
Possible faults and troubleshooting
Problem Possible reasons Troubleshooting
The fan does not start up
during the ventilator start-up.
The control panel displays
no information and does
not respond to the button
pressing.
No power supply.
Contact a qualified electrician to check mains
connection and eliminate a connection error if
there is one.
The control panel displays an
alarm indicator .
The motor is jammed, the impeller blades are
clogged.
Turn the ventilator off. Clean the impeller to
troubleshoot the motor jam. Restart the ventilator.
Communication loss in connecting cable
between the fan motor and the control panel.
Turn the ventilator off. Contact the Seller for further
information.
The control panel displays filter
replacement indicator .
The filter usage time has elapsed. Description of the filter cleaning procedure, see
page 15.
Circuit breaker tripping during
the ventilation unit start-up.
Overcurrent as a result of short circuit in the
electric line.
Turn the ventilator off. Contact the Seller for further
information.
Low air flow.
Low set fan speed. Set higher speed.
The filters, the fan or the regenerator are
clogged.
Clean or replace the filter. Clean the fan and the
heat exchanger.
Noise, vibration. The impeller is clogged. Clean the impeller.

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MANUFACTURER'S WARRANTY
The product is in compliance with EU norms and standards on low voltage guidelines and electromagnetic compatibility. We hereby
declare that the product complies with the provisions of Electromagnetic Council Directive 2014/30/EU, Low Voltage Directive 2014/35/
EU and CE-marking Directive 93/68/EEC. This certificate is issued following test carried out on samples of the product referred to above.
The manufacturer hereby warrants normal operation of the unit for 24 months after the retail sale date provided the user's observance
of the transportation, storage, installation, and operation regulations. Should any malfunctions occur in the course of the unit operation
through the Manufacturer's fault during the guaranteed period of operation, the user is entitled to get all the faults eliminated by the
manufacturer by means of warranty repair at the factory free of charge. The warranty repair includes work specific to elimination of faults
in the unit operation to ensure its intended use by the user within the guaranteed period of operation. The faults are eliminated by means
of replacement or repair of the unit components or a specific part of such unit component.
The warranty repair does not include:
• routine technical maintenance
• unit installation/dismantling
• unit setup
To benefit from warranty repair, the user must provide the unit, the user's manual with the purchase date stamp, and the payment
paperwork certifying the purchase. The unit model must comply with the one stated in the user’s manual. Contact the Seller for warranty
service.
The manufacturer’s warranty does not apply to the following cases:
• User’s failure to submit the unit with the entire delivery package as stated in the user’s manual including submission with missing
component parts previously dismounted by the user.
• Mismatch of the unit model and the brand name with the information stated on the unit packaging and in the user's manual.
• User’s failure to ensure timely technical maintenance of the unit.
• External damage to the unit casing (excluding external modifications as required for installation) and internal components caused by
the user.
• Redesign or engineering changes to the unit.
• Replacement and use of any assemblies, parts and components not approved by the manufacturer.
• Unit misuse.
• Violation of the unit installation regulations by the user.
• Violation of the unit control regulations by the user.
• Unit connection to power mains with a voltage different from the one stated in the user's manual.
• Unit breakdown due to voltage surges in power mains.
• Discretionary repair of the unit by the user.
• Unit repair by any persons without the manufacturer’s authorization.
• Expiration of the unit warranty period.
• Violation of the unit transportation regulations by the user.
• Violation of the unit storage regulations by the user.
• Wrongful actions against the unit committed by third parties.
• Unit breakdown due to circumstances of insuperable force (fire, flood, earthquake, war, hostilities of any kind, blockades).
• Missing seals if provided by the user’s manual.
• Failure to submit the user’s manual with the unit purchase date stamp.
• Missing payment paperwork certifying the unit purchase.
FOLLOWING THE REGULATIONS STIPULATED HEREIN WILL ENSURE A LONG AND
TROUBLEFREE OPERATION OF THE UNIT.
USER’S WARRANTY CLAIMS SHALL BE SUBJECT TO REVIEW ONLY UPON
PRESENTATION OF THE UNIT, THE PAYMENT DOCUMENT AND THE USER’S MANUAL
WITH THE PURCHASE DATE STAMP.

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Unit Type Single-room reversible energy recovery ventilator
Seller’s Stamp
Model Vento Eco ____________
Serial Number
Manufacture Date
Purchase Date
Warranty Period
Seller
Unit Type Single-room reversible energy recovery ventilator
Model Vento Eco ____________
Serial Number
Manufacture Date
Quality Inspector’s
Stamp
Seller
Seller’s Stamp
Address
Phone Number
E-mail
Purchase Date
This is to certify acceptance of the complete unit delivery with the user’s manual. The warranty terms are
acknowledged and accepted.
Customer’s Signature
The Vento Eco ____________ unit is installed pursuant to the requirements stated in the present user's
manual.
Installation Stamp
Company name
Address
Phone Number
Installation
Technician’s Full Name
Installation Date: Signature:
The unit has been installed in accordance with the provisions of all the applicable local and national construction,
electrical and technical codes and standards. The unit operates normally as intended by the manufacturer.
Signature:
CERTIFICATE OF ACCEPTANCE
SELLER INFORMATION
INSTALLATION CERTIFICATE
WARRANTY CARD

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B127-2EN-01