Pichler VENTECH LG 250 A User manual
Systematic ventilation.
optional
COMFORT
VENTILATION
The specified energy eciency
is applicable when controlled to
local requirements and is valid
up to the specified maximum air
flow volume.
EU-Regulation
1253/2014
2016 1254/2014
ENERGIA · ʫʻʫˀʧʰ˔ · ȵɁȵɆȳȵȻȰ · ENERGIJA · ENERGY · ENERGIE ͽEZ'/
LG 250
A
43
dB
250 m³/h
+
A+
A
B
C
D
E
F
G
ErP
2018
OPERATING AND
INSTALLATION INSTRUCTIONS
SYSTEM VENTECH LG 250 A
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 2
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USER GENERALSPECIALIST PERSONNEL
GENERAL 3
1. Introduction 3
2. General 3
3. Authorised intended utilisation 4
4. Safety 6
USER 10
5. Customer service 10
6. Ventilation unit assembly guide for users 10
7. Control units for the user 10
8. Fault & notice messages 18
9. Filter maintenance for users 19
QUALIFIED PERSONNEL 22
Assembly /Installation 22
10. Scope of supply, transport, storage and disposal 22
11. Technical data 23
12. Functionality of the ventilation system 29
13. Operating units 34
14. Assembly 37
15. Electrical connection 41
16. Maintenance and cleaning 46
Commissioning - Service 51
17. Troubleshooting 51
18. Installation/Operation of service software
and firmware updates 52
19. Spare parts and accessories 52
20. Subject to change 52
21. Product data sheets 53
22. EG-Konformitätserklärung (EC Declaration of Conformity) 55
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 3
USER GENERALSPECIALIST PERSONNEL
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This chapter contains general information
on the LG 250 A System VENTECH compact
ventilation unit with "MINI" or "TOUCH"
control units.
READ THIS MANUAL
CAREFULLY THROUGH
BEFORE
COMMISSIONING!
This Manual contains notes and
information on safe operation and proper
installation of the System VENTECH
LG 250 A compact ventilation unit and
on its use and servicing. Refer to this
Manual during servicing to ensure proper
execution of the tasks. Keep this operating
manual in a safe place and readily
available at all times.
Troubleshooting and tasks on the compact
ventilation unit may only be performed
by an installation company (a specialist
company). These units are subject
to ongoing improvement and further
development. Your unit may therefore
vary slightly from the description in this
manual.
Changes reserved:
This manual has been compiled with
the utmost care. This does not, however,
imply any rights. We constantly strive
to improve and optimise our products
technically and we reserve the right
to modify our apparatus or technical
data fully or in part and without prior
notification.
The latest version of our "General Terms
and Conditions of Trade" is applicable.
1. Introduction
Dear Customer, thank you for purchasing
a LG 250 A System VENTECH compact
ventilation unit.
The LG 250 A System VENTECH
compact ventilation unit employs state-
of-the-art technology. It is characterised
by cost eectiveness, ease of use and
reliability.
To operate your compact ventilation unit
safely, properly and economically, please
read this manual carefully and follow the
instructions provided.
Use the ventilation unit only when in
perfect condition and for its designated
use, be aware of safety and any hazards
and cognisant of all the notes and
information contained in this Manual.
Please always keep the model and serial
number (see nameplate on unit) to hand
in case of queries or when ordering spare
parts.
Please contact us if you have any
further questions or if you lose your
documentation.
2. General
J. Pichler Gesellschaft m.b.H.
9021 KLAGENFURT
Karlweg 5, Postfach 32
T+43 (0)463 32769
Gerätetype: 08LG250ALV Baujahr: 03.2017
Seriennummer: E170300156 Gewicht: 65 kg
Auftragsnummer: 3700031E
Volumenstrom: max. 250 m³/h
Abmessung BxHxT: 675x850x595 mm
Spannung/Frequenz: 230V / 50 Hz
Leistungsaufnahme: max. 1550 W
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 4
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USER GENERALSPECIALIST PERSONNEL
The LG 250 A System VENTECH compact
ventilation unit is suitable for installation
in air-conditioning systems for controlled
mechanical ventilation and deaeration
of spaces and dwellings with purposes
similar, for example, to seminar rooms
and small oces at an adjustable air flow
volume of up to 250 m³/h.
Installation of a mechanical, controlled
domestic ventilation system provides
supply air and exhaust air ventilation for
the entire living area. Controlled air supply
with purified and filtered outdoor air is
provided in supply air areas. Odours and
damp ambient extract air are conducted
away in the extract air area.
The purpose of controlled mechanical
ventilation and deaeration of domestic
areas is to improve air quality, reduce
heating energy demand through use of a
highly ecient heat recovery system, and
to influence indoor air humidity.
The field of application and intended use
of the unit are restricted to use in air
conditioning systems for the extraction
of used air and the supply of fresh,
temperature-controlled outdoor air at
maximum temperatures between
-15°C and +35°C. In addition, the air
supply must be free from aggressive
vapours and substances which are
conducive to wear.
Any other use shall be deemed contrary
to designated use. The manufacturer shall
accept no responsibility for damages
or consequential damages arising from
improper use. Designated use also
includes adherence to our prescribed
operating and installation manual.
This unit is available to the general
public and is intended for installation in
residential or industrial buildings. The
unit is used for mechanical aeration
and ventilation of ambient air and, when
combined with a heater coil, is also used
to reheat air.
This unit is not intended for use by
persons, including children, with limited
physical, sensory or mental capacities
or lacking experience and/or knowledge,
unless under supervision or instruction of
a person responsible for their safety.
The unit is not suitable for outdoor
installation and may be installed in
suitable and temperature-controlled
interior areas only. The ventilation unit is
not suitable for drying new buildings.
The LG 250 A System VENTECH compact
ventilation unit is not a ready-to-use
product. It must not be put into operation
until it has been properly installed and
connected to the ventilation system. Only
qualified and instructed personnel may
work on and with the unit.
Personnel transporting,
installing or working on the unit
must have read and understood
the operating instructions, in particular
Section 4: "Safety". The end user must also
be instructed on potential hazards.
3. Designated use
INTENDED USE
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 5
USER GENERALSPECIALIST PERSONNEL
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Local requirements in terms of standards,
laws and directives, must be taken into
account .
The central air conditioners with heat
recovery should not be installed in
comparably sized rooms, apartments
or facilities with room air dependent
heating apparatus unless:
• safety systems are in place to prevent
simultaneous operation of room air
dependent heating apparatus and units
extracting air, or
• special safety systems will monitor
waste gas extraction of a heating
apparatus dependent on room air.
Heating apparatus running on liquid or
gaseous fuels and drawing in room air,
or air conditioning systems, must switch
o should a safety system trigger. The
air conditioning system must switch o
should the safety system trigger in case
of solid fuel heating apparatus drawing
in room air.
Central air conditioning equipment for
controlled ventilation and extraction of air
in an apartment or similar facility shall
not be installed if the facility has room air
dependent heating apparatus connected
to waste gas units with multiple infeeds.
For normal operation of central air
conditioning systems, it must be possible
to close any ducts for combustion air
or waste gas systems from heating
apparatus dependent on room air. Shut-
o systems for waste gas from solid
fuel heating apparatus must be manual.
The position of the operating lever must
indicate the status of the shut-o device.
This is deemed complied with if a shut-o
system is used to block soot (soot shut-
o).
Fire protection requirements
The regional regulatory provisions,
especially the fire protection regulations
for air conditioning of buildings,
as amended, must be taken into
consideration when installing the air
conditioning system in accordance with
the instructions for fire protection.
Due to their heavy burden and irregular
operation, extract air from any kitchen
extractor hoods that may be present
must not be integrated into the dwelling's
air-conditioning system. Extract air from
such extractor hoods must be conducted
separately to the roof by means of an
exhaust air pipe. The supply air must be
provided separately (e.g. by means of
ventilation windows).
Where an extractor hood is operated with
no separate supply of air, the air volumes
in the home will no longer be balanced,
and it will no longer be possible to ensure
the proper function of the home venti-
lation system (odour extraction, etc.).
Another option is to operate the extractor
hood in recirculation mode.
The LG 250 A System VENTECH compact
ventilation unit has been developed and
manufactured for controlled mechanical
ventilation and deaeration of spaces with
purposes similar, for example, to seminar
rooms and small oces.
Any other use shall be deemed improper
use and may result in personal injury or
damage to the LG 250 A System VENTECH
compact ventilation unit, for which the
manufacturer cannot be held liable.
The manufacturer accepts no responsibility
for any damages due to:
• Non-observance of the Safety,
Operating and Servicing notes in this
Operating and Installation Manual
• Fitting of replacement parts which
were not provided by the manufacturer,
in which case responsibility for the use
of such parts shall lie solely with the
equipment fitter/installer.
• Normal wear and tear
LIABILITY
STIPULATIONS FOR OPERATION WITH
FIREPLACES
STIPULATIONS FOR OPERATION WITH
EXTRACTOR HOODS
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 6
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USER GENERALSPECIALIST PERSONNEL
The warranty period shall commence
after the unit is put into operation, but
no later than one month after delivery.
The warranty shall cover exclusively
the replacement of basic material and
exclude claims based on services.
The warranty shall be subject to proof
of services performed as per our
instructions and executed by a licensed
installer/specialised company.
Warranty claims are valid for a maximum
of 24 months following installation of the
LG 250 A
System VENTECH compact ventilation
unit but are limited to 30 months from the
date of manufacture.
Warranty claims shall be limited to
material and/or constructional defects
occurring during the warranty period.
In the event of a warranty claim, the LG
250 A compact ventilation unit must
not be dismantled without prior written
authorisation from the manufacturer. The
manufacturer's liability shall be limited
to spare parts installed by an installation
company approved by the manufacturer.
The warranty shall automatically lapse at
the end of the warranty period, following
improper operation such as operation
without a filter, if parts other than
original manufacturer-supplied parts are
installed, or if unauthorised changes or
modifications are made to the unit.
The warranty is voided automatically by
failure to comply with the information in
this installation and operating Manual.
WARRANTY
4. Safety
Read this Operating and Installation
Manual carefully and heed the notes on
Safety during installation, commissioning,
general work or maintenance on the
unit. Keep the Operating and Installation
Manual near the unit for its entire service
life.
Always heed the safety regulations,
warnings, instructions and remarks in
this Operating Manual. The specifications
given in this document must not be
altered. Non-observance of these safety
regulations, warnings, instructions and
remarks may lead to physical injury or
damage to the compact ventilation unit.
The conclusion of a service contract is
recommended to ensure that the unit
will be checked at regular intervals. Ask
your supplier about approved specialised
companies/installers in your area.
SYMBOLS USED IN THIS DOCUMENT The following Safety symbols highlight
passages containing warnings in respect
of danger and potential hazards. Please
familiarise yourself with these symbols.
Attention/Note!
Attention! Ignoring this warning
may lead to injury or threat to
life and limb and/or damage to
the unit.
Attention: hazardous electrical
voltage! Ignoring this warning
may result in injury or threat to
life and limb.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 7
USER GENERALSPECIALIST PERSONNEL
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Installation, initial start-up,
maintenance and repairs must
only be carried out by
an authorised specialist company
(specialised heating company/installer).
Over and above this operating and
installation manual, local and national
regulations and standards shall also
apply to the operation of this unit without
limitation.
Take instruction from your installer on
the unit and on its control unit following
installation. The ventilation unit may only
be used subject to the "Designated use"
section.
All safety and danger notices attached to
the unit must be observed.
In the event of a malfunction, switch o
the unit immediately and secure against
accidental re-activation. Faults must be
remedied immediately.
After repairs and maintenance work,
qualified personnel must verify that the
unit is safe to operate.
Attachment or installation of additional
parts and components is not permitted.
Modifications and alterations to the
LG 250 A System VENTECH compact
ventilation unit are prohibited. Only
original spare parts may be used.
Modifications and alterations to the
ventilation unit are prohibited and absolve
the manufacturer from all warranties and
liability. Ensure that children do not play
with the unit.
SAFETY REGULATIONS
National and local regulations
must be observed during
installation and setup. The unit
may only be installed in compliance with
national installation regulations.
Installation shall be carried out in
accordance with the general local
building, safety and installation
regulations of the relevant community or
the water and electricity department and
other bodies.
The unit may only be installed in frost-free
and dry rooms. The room temperature at
the installation area must consistently
be between a min. of +5°C and a max. of
+40°C.
The unit is designed for upright or wall
installation and may only be set up on
a suitable, load-bearing floor. The unit
must not be exposed to vibration of any
kind. Suitable drainage of condensate
generated when operating the unit will
be required, including eective odour
blocking traps (siphon).
Water, heating and condensate
connections may only be installed by a
specialist. The unit must be installed and
executed appropriately so as to ensure
seal-tightness and eective condensate
drainage in order to exclude the possibility
of building damage. Eective condensate
drainage must be verified on-site prior to
initial start-up and after servicing the unit.
The maximum permissible load must be
observed when transporting the unit.
Components of the ventilation plant,
e.g. air ducts which may need to be
installed in unheated areas, must be
suitably insulated to prevent heat loss or
condensate formation (for temperatures
under dewpoint). Observe all locally-
applicable construction and fire protection
guidelines, regulations and standards. If
necessary, appropriate suitable measures
should be taken when installing the unit
e.g. installation of fire dampers in air
ducts, etc.
UNIT SET-UP
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 8
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USER GENERALSPECIALIST PERSONNEL
The operation of the ventilation
unit is permitted only if all built-
in parts provided e.g. silencers
etc., have been properly connected.
The system must be taken
out of operation immediately
in the event of any fault or
damage that may cause harm to persons
or property. Further use must be actively
prevented until the unit is fully repaired!
• Warning: hazardous electrical
voltage!
• Disregarding the hazard may
result in death, injury or mate-
rial damage.
• Before carrying out any work on live
parts, the unit must always be dis-
connected completely from the power
supply (all poles) and secured against
being switched back on!
The earthed connector-system
to the mains supply enables all-
pole disconnection of the unit
from the power supply
Electrical connection work as well as
tasks involving electrical plant compo-
nents may only be performed by author-
ised electrical engineers in accordance
with national and local regulations.
Before opening the unit and when carry-
ing out work on the unit e.g. maintenance
work and repairs, the unit must be isolat-
ed from the mains (all poles disconnected)
and secured against being switched back
on for the duration of the work.
The LG 250 A System VENTECH compact
ventilation unit is designed for a 230 V/50
Hz power supply. The unit is not designed
for connection to a 400 V/50 Hz, three-
phase supply.
Electrical equipment and the unit's
warning and protective devices must be
inspected regularly to ensure that they
are in perfect working order. In the event
of faults in the electrical power supply
or identification of defects e.g. loose con-
nections or burnt cables, the unit must be
switched o immediately.
Damaged or faulty power supply cables to
the unit must be repaired immediately to
avoid hazards.
The unit may not be operated until safe
operational conditions are restored.
Fault finding and immediate remediation
of electrical defects and malfunctions
shall be carried out by authorised electri-
cians only. All protective measures must
be inspected (e.g. earth resistance etc.)
after completion of electrical work on the
unit.
For details, see Section 15: "Electrical
Connections"
Work practices that could
compromise the unit's
safety are prohibited!
To ensure safe operation, safety devic-
es must not be removed or bypassed.
ELECTRICAL CONNECTION WORK
PLANT OPERATION
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 9
USER GENERALSPECIALIST PERSONNEL
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The ventilation unit must be switched
o and disconnected from the mains
supply immediately in the event of a fault
message or damage. Be aware of your
safety and of hazards when opening the
front covers or removing cover plates.
Work practices that aect the safety of
the unit are prohibited. The unit may only
be operated with connected air ducts and
installed system components such as
acoustic dampeners and with a minimum
duct length of 1000 mm so as to ensure
that fans or electrical components cannot
be touched.
The ventilation unit may be operated
only in accordance with the
project documentation. The project
documentation shall comply with the
Equipment and Product Safety Act and the
pertinent provisions of the EC Directives
and Standards.
Consider environmental impacts and
refrain from installing the ventilation
units in the vicinity of flammable liquids
or gases, in swimming pools or in areas
exposed to chemicals.
Never operate the ventilation unit without
an air filter. Air filters must be checked
regularly for dirt and damage and
cleaned or replaced if necessary. The air
filters must be changed at least every
six months or when the "Change Filter"
message appears on the control unit. Use
original replacement filters only. If the
plant is not used in summer, the air filters
must, for hygienic reasons, be replaced
prior to restarting.
Comply with safety requirements and
standards when operating the ventilation
unit simultaneously with ambient air-
dependent fireplaces or extractor hoods.
When using fireplaces dependent on
ambient air, a combustion air supply must
be provided separately. See the provisions
on this topic under the section "Provisions
for operation with fireplaces".
Due to their heavy burden and irregular
operation, extractor hoods must under
no circumstances be integrated into
the exhaust or extract air circuits of the
ventilation unit. See the provisions on this
topic under the section "Provisions for
connection with extractor hoods". Exhaust
air extractor hoods must be operated
via separate air pipes with suitable air
replenishment e.g. by means of window
ventilation or in air recirculation mode.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 10
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USER GENERALSPECIALIST PERSONNEL
The LG 250 A System VENTECH compact
ventilation unit is used for controlled,
mechanical ventilation and deaeration of
homes, large residential units and oces
and for similar purposes.
The scope of application normally extends
to living spaces between 80 m² and
approx. 200 m², with an adjustable air
flow of up to 250 m³/h.
The LG 250 A System VENTECH compact
ventilation unit comprises:
• A compact, non-heat bridging and
thermally-insulated housing made from
galvanised steel sheeting, externally
powder-coated in RAL 9010
• A high-eciency heat recovery system
with air/air-counterflow heat exchanger
made from recyclable plastic with an
eciency level of approx. 92 %
• An automatic 100% bypass with energy-
saving DC radial fans with constant
airflow control,
• Air filter, quality grade F7 or F9 in supply
air and G4 in extract air
• Internally wired electronic control
system
• A "MINI" or "TOUCH" OPERATING UNIT
(optional) , for standing or wall mounting
in spaces free from frost.
5. Customer service
Please contact the installer of your
ventilation and air conditioning system
or contact us directly for any questions
relating to the LG 250 A System VENTECH
compact ventilation unit supplied.
USER GUIDE
J. Pichler Gesellschaft m.b.H.
9021 KLAGENFURT
Karlweg 5, Postfach 32
T+43 (0)463 32769
6. Ventilation unit assembly guide for users
The following compact ventilation unit
functions can be configured with the
"MINI" control unit.
• Ventilation level of the ventilation unit
• Switching between summer and winter
modes
• Display of filter change messages
• Display of possible fault
messages with the LEDs provided for
this purpose.
•Air flow volume for levels I to III can be
adjusted in certain areas using a combi-
nation of buttons.
• In addition, the unit can be switched to
Standby mode or Basic Ventilation mode.
"MINI" CONTROL UNIT
7. Control units for the user
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 11
USER GENERALSPECIALIST PERSONNEL
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4 buttons
The ventilation unit is operated by means
of 4 buttons.
Summer/Winter mode:
The two buttons on the left-hand side
are used to switch between summer and
winter mode.
Summer / bypass modes support cooling
of the living area. The bypass circumvents
the heat exchanger and the cold outdoor
air is blown directly or via a ground col-
lector into the living area.
The outdoor air is always conveyed via the
heat exchanger in winter operation.
Modifying the ventilation levels:
The two buttons on the right-hand side
change the unit’s ventilation level. Press-
ing the [+] button increases the ventilation
level until level III is reached which corre-
sponds to boost ventilation. After 1 hour
operating time in the highest ventilation
level, normal ventilation mode is automat-
ically reset to Level 2. The boost venti-
lation may, alternatively, also be stopped
manually after one hour. Pressing the [-]
button reduces the ventilation level.
Basic Ventilation operating mode:
If the ventilation level is less than I, the
unit switches to Standby mode or to Basic
Ventilation operating mode. A minimum
volume flow of 30 m³/h is configured.
7 LEDs:
The ventilation unit's various statuses are
signalled via a total of 7 LEDs. Three LEDs
display the current ventilation level.
If the unit is in
"Basic Ventilation" mode, this can be seen
from the gentling flashing of ventilation
level I.
On the left-hand side, the LEDs for sum-
mer and/or winter modes are arranged
beside the corresponding buttons.
Filter change required:
The potential need to change the filter is
signalled by the LED on the bottom left.
For details on filter replacement, see
Section 9
Fault messages
The LED for fault messages can be seen
on the lower right-hand side. Please con-
tact your installer!
For details on fault messages, see
Section 8
BUTTONS AND LEDS
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 12
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USER GENERALSPECIALIST PERSONNEL
“TOUCH” CONTROL UNIT
1 Current operating mode
2 Ventilation level
3 Temperature (ambient air, supply air, extract air)
4 Menu
5 Date and time
1
2
3
5
4
OPERATING MODE The active operating mode is displayed by
various buttons. The operating mode can
be changed by pressing the buttons. The
following operating modes are available:
Summer:
Summer or bypass mode sup-
ports cooling of the living area.
The bypass circumvents the
heat exchanger and the cold outdoor air
is blown directly or via a ground collector
into the living area.
Winter:
The outdoor air is always con-
veyed via the heat exchanger in
winter operation.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 13
USER GENERALSPECIALIST PERSONNEL
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VENTILATION LEVEL The active ventilation level is displayed by
various buttons. The ventilation level can
be changed by pressing the buttons. The
following selection options are available:
Time program:
The system runs at the ventilation level
that is currently programmed. The time
program can be programmed in the
"Menu" under "Settings".
O*:
The machine is switched o.
Basic ventilation*:
The unit runs with
basic ventilation
Ventilation level 1:
The unit runs at ventilation
level 1
Ventilation level 2:
The unit runs at ventilation
level 2
Ventilation level 3:
The unit runs at ventilation
level 3
The two buttons on the right-hand side
change the unit’s ventilation level. Press-
ing the [+] button increases the ventilation
level until level III is reached which corre-
sponds to boost ventilation. After 1 hour
operating time in the highest ventilation
level, normal ventilation mode is automat-
ically reset to Level 2. The boost venti-
lation may, alternatively, also be stopped
manually after one hour. Pressing the [-]
button reduces the ventilation level.
*Depending on the configuration of the
plant!
Basic ventilation activated: The user can-
not switch o the unit.
Basic ventilation deactivated: The user can
switch o the unit.
Basic ventilation can only be activated and
deactivated by service engineers!
In principle: “Ventilate
as much as necessary”
Adjustment of air volume requires
relevant expertise and is performed by a
specialist during initial start-up.
If ventilation is too low, poor ambient air
quality or mould formation may result in
living areas.
If ventilation is too high, ambient air may
become too dry - particularly in the colder
months.
Superior air volume control
There are various configurations and
operating modes that result in the unit
being operated with air volumes other
than those defined.
These include:
• CO2concentration-based control
• Humidity concentration-based control
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 14
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USER GENERALSPECIALIST PERSONNEL
TEMPERATURE
The Main menu is opened by pressing
the Menu button. Information on the
ventilation unit is displayed here, and
various settings can be made and actions
performed.
The user is returned to the
Start menu by pressing the
Home button.
• Set the required temperature in stand-
ard mode
• Activate/deactivate the time program
• Ambient air, extract air or supply air is
controlled, depending on the control
setting configured by the specialist
MAIN MENU
Current operating values, operating hours,
messages and firmware versions can be
retrieved under the “Information” menu
item.
Current operating values
Time meter
Fault signal
INFORMATION
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 15
USER GENERALSPECIALIST PERSONNEL
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Current errors and error and filter logs
can be displayed here.
Current error
Error log
Filter log
Firmware
Firmware versions for control and display
are displayed here, as well as ventilation
unit model and ventilator model.
Air volume
Volume flow can be adjusted for each
individual ventilation level here (min. and
max. volume flows are preset).
Three times can be specified for each
day using the time program. These times
determine the time at which a particular
ventilation level is activated.
SETTINGS
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 16
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USER GENERALSPECIALIST PERSONNEL
Temperature
Temperatures for standard mode and
setback mode can be configured here. In
addition, three times can be specified for
room temperature each day. These times
determine the time at which a particular
ventilation level is activated.
Air filter changed
If the air filter has been changed, the filter
service time can be reset here so that a
filter warning no longer appears on the
display.
Date & time
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 17
USER GENERALSPECIALIST PERSONNEL
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Language
The user can switch between Deutsch,
English, Français, Nederlands, Ceský,
Slovenskí and Italiano.
The following errors can be reset under
"Actions":
Standard for LG 250 A - no function:
Reset controlled
GL (Basic Ventilation)/OFF
Reset error Z04/Z05
The + and – options are displayed by
pressing the “No” button. The error is
reset by selecting "Yes" and confirming
with "OK".
Error Z04/Z05
One of the two fans is blocked or has no
power supply, no control voltage signal or
no tachometer feedback. Perform reset
only after remedying the error!
ACTIONS
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 18
Changes reserved
USER GENERALSPECIALIST PERSONNEL
“TOUCH” CONTROL UNIT
8. Fault & notice messages
Error signal Reason for error
Supply air fan out of service
The error LED flashes once, followed by a long pause
Extract air fan out of service
The error LED flashes briefly twice in succession, followed by a long pause
Temperature sensor error
The error LED flashes briefly three times in succession, followed by a long pause
General fault
The error LED flashes briefly four times in succession, followed by a long pause
Communication between power section and control unit interrupted
The error LED flashes briefly five times in succession, followed by a long pause
The ventilation unit's fault status is indi-
cated on the operating unit by the flashing
pattern of the fault LED.
Please contact your installer.
“MINI” CONTROL UNIT
*See pages 17/18 for detailed descriptions
Please contact your installer.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 19
USER GENERALSPECIALIST PERSONNEL
Changes reserved
These instructions relate ex-
clusively to regular inspection,
maintenance and replacement
of air filters by the user.
Check the condition of the air
filters regularly
Filter change interval
Filters must be replaced imme-
diately if very dirty. Otherwise,
they should be replaced at least
twice a year, depending on outdoor air
pollution levels.
Only original replacement filters of the
specified quality class may be used.
9. Filter maintenance for the user
1 Exhaust air filter, coarse dust filter class G4
2 supply air filter, fine dust filter class F7,
optionally F9 as a pollen filter
MAINTENANCE INSTRUCTIONS
(AIR FILTER)
1
2
When the filter service time has elapsed
(factory setting: 2,900 hours), the control
unit signals the need for a filter change
through the LED provided for this purpose,
which lights yellow continuously.
FILTER MESSAGE ON THE "MINI” CON-
TROL UNIT
The control unit reminds the
user of filter maintenance at
regular intervals (filter service
time: 2900 hours)!
FILTER MESSAGE ON THE "TOUCH" CON-
TROL UNIT
1
2
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 250 A PAGE 20
Changes reserved
USER GENERALSPECIALIST PERSONNEL
When replacing the air filters,
avoid soiling the unit and its
components. Dirty air filters
must be immediately and suitably dis-
posed of.
It is advisable to package the air filters in
an airtight container immediately after
removal to avoid contamination of the
ventilation system and the unit.
Before carrying out any work
on live parts, the unit must
always be disconnected com-
pletely from the power supply
(all poles) and secured against being
switched back on!
1. Filter message on control unit
2. Undo the wing nuts on the housing
cover.
3. Open the front doors.
4.Before drawing the air filters out from
the unit, release the filter stentering rails.
Only then may the air filters be easily
lifted out and replaced.
5. Extract the filter.
ATTENTION: Never operate the
ventilation unit without using air
filters!
6. Insert the new filter. Please note: Only
original replacement filters of the speci-
fied quality class may be used.
Note the installation position
(direction of ventilation) of the
filter!
7. When inserting the new filter, ensure
that it is installed correctly, and close the
filter stentering rails.
8. Close the housing cover and secure it
with the wing nuts. When replacing the
cover, ensure that it is completely closed
and that there is sucient seal-tightness
between the front cover and the unit
housing.
Where can I order filters?
Use only original replacement filters of
the filter quality class specified.
FILTER CHANGING
J. Pichler Gesellschaft m.b.H.
9021 KLAGENFURT
Karlweg 5, Postfach 32
T
+43 (0)463 32769
Designation Item no.:
Supply air filter quality grade F7 -
standard 40LG050060
Extract air filter quality grade G4 -
standard 40LG050050
Supply air filter quality grade F9 -
standard 40LG050070
1 Filter stentering rails
2 Air filter
1
2
2
1
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6
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