BLAUBERG VENTO Ergo A25-1 Pro User manual

OPERATION MANUAL
VENTO Ergo A25-1 Pro
VENTO Ergo A25-1 S Pro
HEAT RECOVERY SINGLE-ROOM UNIT
EN

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VENTO Ergo A25-1 Pro/A25-1 S Pro
Introduction 3
General 3
Safety rules 3
Transportation and storage rules 3
Manufacturer's warranty 3
Design and operating logic 4
Modications and options 5
Delivery set 5
Technical data 6
Mounting 7
Connection to power mains 9
Unit control 10
Maintenance 12
Troubleshooting and fault handling 13
Acceptance certicate 14
Connection certicate 14
Warranty card 14
CONTENTS

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VENTO Ergo A25-1 Pro/A25-1 S Pro
WARNING
Do not dispose in domestic waste.
The unit contains in part material
that can be recycled and in part
substances that should not end up
as domestic waste.
Dispose of the unit once it has
reached the end of its working life
according to the regulations valid
where you are.
ATTENTION
The product is not allowed for use by children
and persons with reduced physical, mental or
sensory capacities, without proper practical ex-
perience or expertise, unless they are controlled
or instructed on the product operation by the
person(s) responsible for their safety. Supervise
the children and do not let them play with the
product.
WARNING
Make sure the unit has no visible transport damages while accepting the goods. Check
the ordered and the delivered goods for compliance.
ATTENTION
Read the operation manual prior to any electric installations. Connection of the unit to power mains is
allowed by qualied professionals.
WARNING
Read the operation manual prior to any electric installations. Connection of the unit to
power mains is allowed by a qualied electrician only.
The rated electrical parameter are stated on the rating plate. No modications of internal
connections are allowed and will result in void warranty.
Connect the fan only to power mains with valid electric standards. The unit must be
connected to a correct mounted socket with a grounded terminal or connected to a xed
installed cable.
Follow the respective electric standards, safety rules (DIN VDE 0100), TAB der EVUs. The
house cabling system must be equipped with an automatic switch at the external input.
Connect the unit to power mains through the automatic switch. The contact gap on all
poles at least 3 mm (VDE 0700 T1 7.12.2 / EN 60335-1).
Install the automatic switch to ensure prompt access.
WARNING!
Disconnect the unit from power mains prior to maintenance operations!
ATTENTION
After installation of the lters and the heat exchanger in the unit, press and hold the button
on the remote controller to reset the motor meter. A long sound signal conrms reset of
the motor meter.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
BLAUBERG Company is happy to oer your attention a new heat recovery
single-room unit VENTO Ergo A25-1 Pro.
INTRODUCTION
The present operation manual contains a technical description, technical
data sheets, operation and mounting guidelines, safety precautions and
warnings for safe and correct operation of the unit.
Read carefully and understand the operation manual, especially the safety
requirements, before the unit mounting and start up.
Keep the operation manual available as long as you use the unit.
GENERAL
The single-room unit is designed for ecient energy saving supply and
exhaust ventilation of ats, houses, cottages and other small premises.
The unit is equipped with a high-tech ceramic heat exchanger that provides
the extract air heat recovery for warming up of ltered supply air. The heat
recovery eciency of the heat exchanger is up to 85%.
The unit is designed for indoor application with the ambient temperature
ranging from -20 °C up to +50 °C and relative humidity up to 80%.
The unit is designed for external through-the-wall installation. The unit is
designed for continuous operation always connected to power mains.
The unit is allowed for operation only after nal mounting that includes
installation of protecting devices in compliance with DIN EN ISO 13875 (DIN
EN OSI 12100) as well as other construction safety equipment.
The unit design is regularly improved, so some models may slightly dier
from those ones described in this operation manual.
SAFETY RULES
All operations related to the unit electrical connections, servicing and repair
works are allowed only after the unit disconnection from power mains.
All mounting and servicing operations are allowed by duly qualied
personnel.
The unit must be grounded!
Please follow the safety regulations and working instructions (DIN EN 50 110,
IEC 364).
Make sure the impeller and the casing are not damaged before connecting
the unit to power mains. The casing internals must be free of any foreign
objects which can damage the impeller blades.
Disconnect the unit from power mains prior to any operations related to the
unit servicing and repair works.
Misuse of the product or any unauthorized modication are not allowed.
The unit is designed for connection to AC single-phase power mains, see
„Technical Data”. The unit is rated for permanent operation during non-stop
power supply.
Take steps to prevent ingress of smoke, carbon monoxide and other
combustion products into the room through open chimney ues or other
re-protection devices. Sucient air supply must be provided for proper
combustion and exhaust of gases through the chimney of fuel burning
equipment to prevent back drafting. The maximum permitted pressure
dierence per living units is 4 Pa.
The transported air must not contain any dust or other solid impurities, sticky
substances or brous materials.
The unit is not rated for operation in a ammable or explosive medium.
Do not close or block the unit intake or exhaust vent not to disturb the
normal air passage.
Do not sit on the unit and do not put objects on the unit.
In case of unusual sounds, smoke disconnect the unit from power supply and
contact the service centre.
Follow the operation manual guidelines to ensure trouble-free operation and
long service life of the unit.
Hazardous parts access and water ingress protection standard IP24.
STORAGE AND TRANSPORTATION RULES
Transportation of the unit is allowed by any vehicle provided the unit is
transported in the original package and is protected against weather and
mechanical damages.
Use hoist machinery for handling and transportation to prevent possible
mechanical damages of the unit. Full the requirements for transportation of
the specied cargo type during cargo-handling operations.
Store the unit in a dry and cool place in the original packing.
The storage environment must not be subjected to any aggressive and/
or chemical evaporations, admixtures, foreign objects that may provoke
corrosion and damage connection tightness.
Store the unit in an environment with minimized risk of mechanical damages,
temperature and humidity uctuations.
Do not expose the unit to the temperatures below +10 °C and above +40 °C .
Connection of the unit to power mains is allowed after the unit has been kept
indoor for minimum two hours.
MANUFACTURER’S WARRANTY
The product complies with the requirements according to the EU norms
and directives, to the relevant EU-Low Voltage Equipment Directives, EU-
Directives on Electromagnetic Compatibility.
We hereby declare that the following product complies with the essential
protection requirements of Electromagnetic Council Directive 2004/108/
EC, 89/336/EEC and Low Voltage Directive 2006/95/EC, 73/23/EEC and
CE-marking Directive 93/68/EEC on the approximation of the laws of the
Member States relating to electromagnetic compatibility.
The manufacturer hereby warrants normal operation of the product over
the period of 2 years from the retail sale date provided observance of the
installation and operation regulations.
In case of failure due to manufacturing fault during the warranty period the
consumer has the right to exchange it.
If case of no conrmation of the sale date, the warranty period shall be
calculated from the manufacturing date.
The replacement is oered by the Seller.
The manufacturer shall not be liable for any damage resulting from any
misuse of or gross mechanical interference with the unit.
Full the operation manual requirements to ensure a trouble-free and long
service life of the unit.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
DESIGN AND OPERATING LOGIC
The unit consists of a telescopic duct with adjustable length, a ventilation
unit and an outer hood.Two lters and a ceramic heat exchanger are installed
inside of the telescopic air duct. The round Ø 107 mm air duct is made of
plastic and has an adjustable length:
- 300 up to 570 mm for the models VENTO Ergo A25-1Pro;
- 120 up to 500 mm for the models VENTO Ergo A25-1 S Pro.
The unit is equipped with a high-tech ceramic heat exchanger with heat
recovery eciency up to 85 %. Due to the cellular structure is has larger
contact surface and high heat recovery eciency. The ceramic heat
exchanger is featured with excellent heat-conducting properties and heat
accumulating capacity. The heat exchanger is used for extract air heat
recovery and warming up of supply air. The cord inside the heat exchanger
facilitates its removal for maintenance. The heat exchanger is installed on the
insulation material used as a sealer as well.
The ventilation unit with a at front panel is for installation on inner side. The
automatic shutters in the ventilation unit close the air duct when the unit is
o.
Air is supplied and extracted with an axial reversible fan with EC motor and
low energy demand.The motor has overheating protection and ball bearings
for longer service life.
Two built-in lters with total lter class G3 and antibacterial coating are
used for supply and extract air ltration and the heat exchanger anti-soiling
protection. The unit is equipped with a motor meter with non-volatile
memory. After 90 days non-stop operation the sound signal reminds of the
need to clean or replace the lters. The signal is repeated every 5 minutes,
until the lters are cleaned or replaced.
The outer hood to prevents ingress of large objects and water into the unit.
The unit operation modes are controlled with a remote controller or two
three-position switches located on the unit casing.
Fig. 1. Unit design
AH outer hood for walls with
standard thickness (included
into VENTO Ergo A25-1 Pro
delivery set)
Enthalpy ceramic
heat exchanger with
antibacterial coating
Plastic air duct
G3 filters with
antibacterial coating
AH-S outer hood for thin walls (included into
VENTO Ergo A25-1 S Pro delivery set)
Ventilation unit with automatic shutters
Reversible axial EC fan with overheating
protection and ball bearings
Three-position switches
Fan does not run
(automatic shutters
CLOSED)
Fan runs
(automatic shutters
OPENED)

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VENTO Ergo A25-1 Pro/A25-1 S Pro
MODIFICATIONS AND OPTIONS
VENTO Ergo A25-1 Pro
Unit with a at front panel for 300 up to 570 mm walls.
VENTO Ergo A25-1 S Pro
Unit with a at front panel for 120 up to 500 mm walls.
ATTENTION
Unit – 1 item;
Fixing set – 1 item;
Operation manual – 1 item;
Remote controller – 1 item;
Packing box – 1 item.
Fig. 3. VENTO Ergo A25-1 Pro Fig. 4. VENTO Ergo A25-1 S Pro
• Polluted warm air is extracted from the room and while owing
through the heat exchanger warms it up and transfers a part of
humidity.
• After the ceramic heat exchanger gets warmed up the unit changes
into air supply mode.
• While owing through the heat exchanger fresh cold air
from outside absorbs accumulated heat and moisture.
• As the heat exchanger cools down the unit changed into
air extract mode.
Unit operation logic in winter time
Cycle 2 (70 seconds)
Air extraction from the room
Cycle 1 (70 seconds )
Air extraction from the room
OUTSIDE OUTSIDE INSIDE +17 °C+20 °C
-7 °C -10 °C
The unit has four ventilation modes:
• Ventilation - the unit operates in permanent extract or supply
mode, depending of the CN7 jumper position. The jumper is set to
extract (out) mode by default.
• Air Supply - the unit operates in supply mode no matter CN7
jumper position.
• Passive Air Supply – the fan is o, the automatic shutters are
opened and the room is ventilated in the natural way.
• Heat Recovery – the unit operates in reversible mode with heat and
humidity recovery.
In Heat Recovery mode the air supply and air extract modes are changed
every 70 seconds.
Fig. 2. Operation logic

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VENTO Ergo A25-1 Pro/A25-1 S Pro
TECHNICAL DATA
Table 1. Technical data of the unit
Parameters VENTO Ergo A25-1 Pro
VENTO Ergo A25-1 S Pro
Voltage / 50–60 Hz [V] 1~100–230
Speed 1 2 3
Total unit power [W] 3.68 4.15 5.59
Total unit current [A] 0.024 0.027 0.038
Max. air ow [m3/h] 7 16 25
RPM 1250 1397 2541
Sound pressure level at 1 m distance [dB(A)] 31 35 43
Sound pressure level at 3 m distance [dB(A)] 19 22 29
Outdoor sound attenuation [dB(A)] 19
Transported air temperature [°C] from -20 up to +50
Filter: extract / supply G3
Heat recovery eciency [%] up to 85
Heat exchanger type ceramic heat exchanger
Ingress Protection Rating IP24
Fig. 6. Overall dimensions
VENTO Ergo A25-1 Pro VENTO Ergo A25-1 S Pro
107
196
300-570
57
257
240
196
120-500
57
208
205
107

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VENTO Ergo A25-1 Pro/A25-1 S Pro
MOUNTING
The unit is designed for through-the-wall mounting in the building outer wall.
Mounting sequence:
1. Prepare a round core hole through the outer wall. The size is shown in the
gure 7.
While mounting several connected in series units provide a recess for the
cable layout during the hole preparation to enable series connection of
several units.
110
Fig. 7.
2. Install the telescopic air duct in the wall. The protruding telescopic air
duct on outer wall side must be equal to the distance A, g. 8:
Distance ring А
Inside Outside
Model А, mm
VENTO Ergo A25-1 Pro 10
VENTO Ergo A25-1 S Pro
10-140
Fig. 8.
3. Fill the gaps between the wall and the telescopic air duct with a mounting
foam.
Fig. 9.
4. Install the lter, the ceramic heat exchanger, another lter and the air ow
rectier in the telescopic air duct.
Fig. 10.
5. Mark the fastening holes for the outer ventilation hood:
• Fig. 11a for VENTO Ergo A25-1 Pro. Drill 40 mm holes for the dowel 6x40.
180 mm
Ø6 mm
180 mm
Fig. 11a.
Fig. 11b for VENTO Ergo A25-1 S Pro. Drill 40 mm holes for the dowel 6x40.
138 mm
Ø6,4 mm
217 mm
Fig. 11b.
6. Insert the dowels 6x40 from the delivery set into the holes.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
7. Disassemble the outer ventilation hood to enable access to the fastening
holes:
• Fig. 12a – VENTO Ergo A25-1 Pro model. Remove the upper part of the outer
ventilation hood.
Fig. 12a.
• Fig. 12b – VENTO Ergo A25-1 S Pro model. Loosen 5 screws and take o
the upper part of the outer ventilation hood.
1 2
Fig. 12b.
8. Fix the back part of the outer hood on the wall.
• Fig. 13a – VENTO Ergo A25-1 Pro model. Fix the back part of the outer
ventilation hood to the wall with the screws 4x40 from the delivery set.
Fig. 13a.
Screws
• Fig. 13b – VENTO Ergo A25-1 S Pro model. Fix the back part of the outer
ventilation hood to the wall with the screws 4x40 from the delivery set.
Screws
Fig. 13b.
9. Install the upper part of the outer ventilation hood:
• Fig. 14a. VENTO Ergo A25-1 Pro model.
Fig. 14a.
• Fig. 14b. VENTO Ergo A25-1 S Pro model.
Fig. 14b.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
The unit is rated for connection to single-phase alternating current power
mains 1~100–230 V / 50–60 Hz.The unit is delivered ready to plug-in and must
be connected to power supply via a pre-wired power cable with a euro plug.
CONNECTION TO POWER MAINS
Fig. 15. Wiring diagram
XS3
CN7
TB2
TB1
TB3 L
1
2
3
1
2
3
4
5
6
L
G
D
+
N
L
G
D
+
N
XS4
A1 Unit
controller
XS2 XS1
1~100-230 V
50-60 Hz The jumper between the contacts 1 and 2 or 2 and 3 of CN7 socket connector
determines air ow direction in Ventilation mode:
• If the jumper connects the contacts 1 and 2, air is extracted from the room in
Ventilation mode (factory setting).
• If the jumper connects the contacts 2 and 3, air is supplied to the room in
Ventilation mode.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
Fig. 16. Control switches on the ventilation unit
Fig. 17. Remote controller
The unit is operated with the switches on the ventilation unit casing, Fig. 16
or with the remote controller, Fig. 17.
The unit control with the operation switches on the unit casing has limited
functionality:
1. Activation of the speed 2 and speed 3 only;
2. Setting three of four possible ventilation modes.
The remote controller has a wider control functionality.
Humidity control function is possible from the remote controller only!
UNIT CONTROL
O. The unit does not run.
The air shutters are closed.
Supply and exhaust ventilation
with heat recovery
High speed. The unit operates with
maximum air capacity.
Air supply
Medium speed. The unit operates
with air capacity 50%.
Ventilation
Turning unit ON/OFF Night mode:
The unit changes to low speed after receipt of a signal from the
photosensor.
Air supply mode:
The unit operates in permanent natural air supply mode.
Humidity control mode:
Set the required humidity set point (45, 55 or 65 %). The unit
maintains set humidity in the room.
Reversible heat recovery ventilation mode:
The unit changes air supply and air extract mode in set time
period thus transferring accumulated heat and humidity from
warm extract air to cold supply air in winter or transferring
coolness in summer.
Three unit speeds
Natural air supply mode:
The air shutters are opened, the fan does not run.
Ventilation mode:
Air extract mode is set by default.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
Function Button
1 Unit ON/OFF
2Night mode
Activation
Activation of the Night Mode is conrmed with a long sound signal.
If the Night Mode function is activated the unit changes to low speed as soon as it gets dark in the room.
Deactivation
Exit from the Night Mode is conrmed by a short sound signal.
3 Speed setting
First speed – slow speed
Second speed – medium speed
Third speed – maximum speed
4 Operation mode setting
Changeover to Passive Supply.
Natural ventilation of a room when the fan is o.
Changeover to Air Supply Mode.
Air is supplied to the room at the set speed. All the connected in series units operate in Air Supply Mode no matter of the CN7 jumper
position.
Changeover to the Ventilation Mode.
All the connected in series units operate either in Air Extract or Air Supply Mode depending on the CN7 jumper position. By default
the jumper is set to Air Extract mode.
Changeover to Heat Recovery Mode.
The unit changes air supply and air extract cycles and operates in reversible mode with heat recovery. The unit operates 70 seconds
Air Supply Mode, then 70 seconds in Air Extract Mode.
5
Humidity control (available only for Heat Recovery mode)
If the indoor humidity exceeds the set point, the unit switches to high speed. If the humidity is within ±5%, the unit operates at medium speed. If the
indoor humidity is below the set point, the unit changes to low speed. Press any speed control button to deactivate the humidity control function.
45%
55%
65%
Operation with the remote controller
Turn the switches on the ventilation unit to OFF position prior to using the remote controller.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
The unit maintenance involves periodic cleaning of the unit surfaces and
cleaning or replacement of the lters.
1. Fan maintenance (once a year).
Take o the ventilation unit and clean the fan blades, g. 20. Remove dust
with a soft brush, cloth or a vacuum cleaner. Do not use water, abrasive deter-
gents, solvents, sharp objects. Clean the impeller blades once in a year.
Fig. 20.
2. Heat exchanger and lter maintenance (4 times per year).
Pull out the air ow rectier, g. 21. Remove the lter in front of the heat ex-
changer. Pull the cord to remove the heat exchanger from the air duct sup-
porting it with the hand to avoid its damage. Remove the lter behind the
heat exchanger.
Fig. 21.
Clean the lters as often as required, but at least once in three months. After
90 days of non-stop operation the sound signal reminds of the need to clean
or replace the lter. The signal is repeated every 5 minutes. In this case turn
the unit o and clean or replace the lters.
To clean the lters ush those with water or use a vacuum cleaner, g. 22.
Install the dry lters into the air duct. Contact a local distributor for the new
lters stated above in the section„Technical data”.
Even regular lter maintenance may not completely prevent dust accumula-
tion on the heat exchanger unit. Clean the heat exchanger with a vacuum
cleaner at least once a year to maintain its high heat recovery eciency.
Fig. 22.
3. Outer ventilation hood maintenance (once a year).
The outer ventilation hood grill may get clogged with leaves and other
objects that reduce the unit performance. Check the outer ventilation hood
twice a year and clean it as often as required.
Cleaning of the outer ventilation hood:
• remove the upper part of the outer ventilation hood:
Fig. 23 for VENTO Ergo A25-1 Pro.
Fig. 23.
Fig. 24 for VENTO Ergo A25-1 S Pro.
• clean the outer ventilation hood and the air duct.
1 2
Fig. 24.
MAINTENANCE
ATTENTION
After installation of the lters and the heat exchanger in
the unit, press and hold the button on the remote
controller to reset the motor meter. A long sound signal
conrms reset of the motor meter.

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VENTO Ergo A25-1 Pro/A25-1 S Pro
Fault Possible reasons Fault handling
The fan does not start
when the unit is on.
No power supply. • Make sure of correct power supply, otherwise troubleshoot
the connection error.
Jammed motor, soiled impeller blades.
• Turn the unit o.
• Troubleshoot the motor jam and the impeller clogging.
Clean the blades.
• Restart the unit.
Automatic switch tripping
during the unit start. Short circuit in power grid as a result of short circuit. • Turn the unit o. • Contact the seller.
Low air ow.
Low set fan speed. • Set higher speed.
The lters, the fan or the heat exchanger are soiled.
• Clean or replace the lter.
• Clean the fan and the heat exchanger.
• Refer page 12 for maintenance of the heat exchanger and
the lters.
Sound signals. The motor meter is actuated. • Refer page 12 for maintenance of the heat exchanger and
the lters.
Noise, vibration.
The impeller is soiled. • Clean the impeller.
Loose screw connection of the unit casing or the outer
ventilation hood.
• Tighten the screws of the unit or the outer ventilation
hood.
TROUBLESHOOTING

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VENTO Ergo A25-1 Pro/A25-1 S Pro
Heat recovery single-room unit
is recognizes as serviceable.
The unit complies with the requirements according to the EU norms and directives, to the relevant EU-Low Voltage Equipment Directives, EU-Directives on
Electromagnetic Compatibility.
We hereby declare that the following product complies with the essential protection requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/
EEC and Low Voltage Directive 2006/95/EC, 73/23/EEC and CE-marking Directive 93/68/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility.
This certicate is issued following test carried out on samples of the product referred to above.
Approval mark Manufacturing date____________________
Company
Name _
Date Signature
Heat recovery single-room unit
VENTO Ergo A25-1 Pro VENTO Ergo A25-1 S Pro
is connected to power mains in compliance with the operation manual requirements by the professional:
SELLER
SALES DATE
REPRESENTATIVE IN EU
BLAUBERG Ventilatoren GmbH
Aidenbachstr. 52
D-81379 Munich, Germany
ACCEPTANCE CERTIFICATE
CONNECTION CERTIFICATE
WARRANTY CARD
VENTO Ergo A25-1 Pro VENTO Ergo A25-1 S Pro
VENTO Ergo A25-1 Pro VENTO Ergo A25-1 S Pro

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VENTO Ergo A25-1 Pro / v.1(2) / EN