Pichler Ventech LG 150 User manual

optional
The specified energy eciency
is applicable when controlled to
local requirements and is valid
up to the specified maximum air
flow volume.
2016 1254/2014
ENERGIA · ʫʻʫˀʧʰ˔ · ȵɁȵɆȳȵȻȰ · ENERGIJA · ENERGY · ENERGIE · ENER GI
LG 150 A
A
39
dB
150 m³/h
+
A+
A
B
C
D
E
F
G
EU Regulation
1253/2014
EN 13141-7:2011-01
LG 150 A
/*$)
ErP
2018
LG 150 A,
LG 150 AF
LG 150 A,
LG 150 AF
Systematic ventilation.
COMFORT
VENTILATION
OPERATING AND
INSTALLATION INSTRUCTIONS
SYSTEM VENTECH LG 150

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 2
GENERAL
1. Introduction Page 4
2. Symbols used in this document Page 4
3. Designated use Page 5
4. Safety Page 7
USER
USER GUIDE
5. Customer service Page 10
6. Ventilation unit assembly guide for users Page 10
7. Control units for the user Page 11
8. Messages/Faults Page 20
9. Filter maintenance for the user Page 21
GUIDE FOR SPECIALIST PERSONNEL
MOUNTING/INSTALLATION
10. Scope of supply, transport, storage and disposal Page 23
11. Technical data Page 24
12. Ventilation unit set-up for specialised personnel Page 28
13. Versions Page 36
14. Control units Page 38
15. Installation Page 41
16. Electrical connection Page 46
17. Maintenance and cleaning Page 50
GENERAL
USER
SPECIALIST PERSONNEL
Changes reserved
Contents

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 3
GENERAL
USER
SPECIALIST PERSONNEL
INITIAL START-UP - SERVICE
18. Initial start-up Page 55
19. Troubleshooting Page 56
20. Installation/Operation of service software
and firmware updates Page 57
21. Spare parts and accessories Page 57
22. Product data sheets Page 58
23. EC Declaration of Conformity (EG-Konformitätserklärung) Page 62

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 4
SPECIALIST PERSONNEL GENERAL
USER
Changes reserved
Dear customer, thank you for choosing the
LG 150 System VENTECH compact ventila-
tion unit range.
The LG 150 System VENTECH range of
compact ventilation units employs state-
of-the-art technology. It is characterised
by cost eectiveness, 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.
Keep this operating manual in
a safe place and readily available at all
times.
Troubleshooting and procedures may be
performed by an installation company
(specialist company) only.
These units are subject to ongoing im-
provement and further development. Your
unit may therefore vary slightly from the
description in this manual.
Nameplate:
Should you have any queries or wish to
order spare parts, please have the unit
mode and serial number (see nameplate
on unit) to hand.
Please contact: us if you have any further
questions or if you lose your documenta-
tion.
J. Pichler Gesellschaft m.b.H.
9021 KLAGENFURT
Karlweg 5, Postfach 32
T+43 (0)463 32769
1. Introduction
Example of nameplate
TYPEN
GEPRÜFT
TÜV AUSTRIA SERVICES GMBH
The LG 150 System VENTECH range
of compact ventilation units has been
safety-tested and inspected, along with
all of the optional system components
listed in this guide, by TÜV-AUSTRIA
Services GmbH, a testing, inspection and
certification authority based in Vienna, in
accordance with product requirements,
standards and guidelines.
The applicable inspection points, along
with optional system accessories, have
been certified as compliant in reports
PS2015-002 and M/EMV-15/115 under
the conditions of compliance with and
adherence to all of the requirements
described in this guide.
Please familiarise yourself with the fol-
lowing safety symbols. They highlight text
containing warnings in respect of danger
and potential hazards.
Attention/Note!
Attention! Ignoring this warning
may result in 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.
2. Symbols used in this
document

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 5
The LG 150 System VENTECH range of
compact ventilation units 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 oces at an adjustable
air flow volume of up to 150 m³/h (LG 150
A) or approx. 200 m³/h for up to 160 m²
(LG 150 B with high air capacity).
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 ecient heat recovery system, and
to influence indoor air humidity.
The unit’s scope and designated use
is limited to use in ventilation and air
conditioning systems for the extraction of
used air and the supply of fresh, temper-
ature-controlled outdoor air at maximum
conveyed media temperatures of -15°C
to + 35°C. In addition, the air conveyed
must be free of aggressive vapours and
abrasive material. Any other use shall be
deemed contrary to designated use. The
manufacturer shall accept no responsibil-
ity for damages or consequential damag-
es arising from improper use.
Designated use also includes adherence
to our prescribed operating and installa-
tion manual.
This unit is available to the general public
and is intended for installation in residen-
tial or industrial buildings. The unit is used
for mechanical aeration and ventilation
of ambient air and, when combined with
an external heater battery, 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 instal-
lation and may be installed in suitable
and temperature-controlled interior areas
only. The ventilation unit is not suitable
for drying new buildings. The compact
ventilation unit from the LG 150 System
VENTECH range 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.
INTENDED USE
3. Designated use
SPECIALIST PERSONNEL GENERAL
USER
Changes reserved

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 6
SPECIALIST PERSONNEL GENERAL
USER
STIPULATIONS FOR OPERATION WITH
FIREPLACES
Due to heavy load 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
outdoors by means of an exhaust air pipe.
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.
If an extractor hood is operated without
separate introduction of supply air,
air volume in the dwelling becomes
unbalanced. Proper functioning of the
domestic air-conditioning system cannot
be guaranteed in such instances (odour
carryover etc.)
Another option is to operate the extractor
hood in recirculation mode.
The LG 150 System VENTECH compact
ventilation unit range has been developed
and manufactured for controlled mechan-
ical ventilation and deaeration of spaces
with purposes similar, for example, to
seminar rooms and small oces.
For proper operation of the central air
conditioning systems, it must be possible
to close any ducts for combustion air and
flue gas systems of fireplaces drawing in
room air.
Any other use shall be deemed improper
use and may result in personal injury or
damage to the LG 150 System VENTECH
compact ventilation unit range, for which
the manufacturer cannot be held liable.
The manufacturer accepts no responsibility
for any damages due to:
• Failure to observe the safety, operating
and maintenance instructions provided
in this operating and installation manual.
• Installation of spare parts that have
not been supplied by the manufacturer,
whereby the responsibility for use of
such spare parts lies wholly with the
system's constructor/installer.
• Normal wear and tear.
LIABILITY
STIPULATIONS FOR OPERATION WITH
EXTRACTOR HOODS
Changes reserved
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.

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 7
The warranty period shall commence
after the unit is put into operation, but no
later than one month after delivery. The
warranty covers replacement of materi-
als only, and excludes 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 150 System VENTECH compact
ventilation unit range 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 150
compact ventilation unit must not be dis-
mantled without prior written authorisa-
tion from the manufacturer. The manufac-
turer'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 modifica-
tions 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 Use the ventilation unit only when in per-
fect 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.
Keep the operating and installation manu-
al in the vicinity of the unit. The specifica-
tions given in this document must not be
altered.
Failure to observe these safety
requirements, warning notices,
notes and instructions during
installation and maintenance
works, as well as commissioning, may
result in bodily injury or damage to the
compact ventilation unit.
Modifications and alterations to the
ventilation unit are prohibited and absolve
the manufacturer from all warranties and
liability.
Be aware of your safety and of hazards
when opening the front covers or remov-
ing cover plates.
Installation, initial start-up,
maintenance and repairs must
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 be
used only in accordance with the infor-
mation provided in Section 3 “Designated
Use”.
All safety and danger notices attached
to the unit must be observed. Ensure
that children do not play with the unit!
Work practices that could potentially damage the unit are prohibited! To
ensure safe operation, safety devices must not be removed or bypassed.
Changes reserved
USER GENERALSPECIALIST PERSONNEL

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 8
SPECIALIST PERSONNEL GENERAL
USER
• Warning: hazardous electrical
voltage!
• Disregarding the hazardmay
result in death, injury or material
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.
Electrical connection work and work on
the system's electrical components may
be carried out by authorised electricians
only, in compliance 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.
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 16: “Electrical
Connections”
Instructions:
National and local regulations
must be observed during
installation and setup. The
unit must be installed in accordance with
national installation regulations as well as
with the general, locally applicable build-
ing, safety and installation regulations
of the relevant community or water and
electricity utilities and other bodies.
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.
Condensate drainage connection:
Installation for water, heating and con-
densate connections may be performed
by a specialist only. The unit must be
installed and executed appropriately so
as to ensure seal-tightness and eective
condensate drainage in order to exclude
the possibility of building damage. Eec-
tive condensate drainage must be verified
on-site prior to initial start-up and after
servicing the unit. For details, see Section
15: “Installation”
UNIT SET-UP
ELECTRICAL CONNECTION WORK
Changes reserved
Work practices that could
potentially damage the unit
are prohibited.
To ensure safe operation, safety
devices must not be removed or
bypassed.
Work practices that could
compromise the unit's safety
are prohibited.
To ensure safe operation, safety
devices must not be removed or
bypassed.

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 9
To ensure safe operation of the system,
safety devices and covers must not be
rendered inoperative; nor may measures
be taken to bypass or dismantle them.
Malfunctions:
In the event of malfunctions,
occurrence of errors or damage
to the ventilation system that
may be hazardous to persons or property,
isolate all power supply poles from mains
immediately and secure against being
switched back on.
Further operation must be actively
prevented until the unit is fully repaired.
Faults must be remedied immediately.
After repairs and maintenance work,
qualified personnel must verify that the
unit is safe to operate.
Operation of the ventilation
unit is permitted only if all
built-in parts provided e.g. si-
lencers etc., have been properly connect-
ed to ensure that fans or other electrical
components cannot be touched by hand.
In the event of any malfunctions, error
messages or damage that can cause
harm to persons or property, the system
must be put out of operation immediately.
Further use must be actively prevented
until the unit is fully repaired.
The ventilation unit may be operated only
in accordance with the project docu-
mentation. This must comply with the
German Equipment and Product Safety
act and with the relevant stipulations of
EC directives and standards. Influencing
environmental factors must be taken
into account. Do not install the ventilation
unit in the vicinity of combustible liquids
or gases, in swimming pools or in areas
subject to chemical influences.
Maintenance:
A service contract is recommended to
ensure that the unit is inspected and
serviced at regular intervals. Ask your
supplier about approved specialised com-
panies/installers in your area.
Spare parts
Attachment or installation of additional
parts and components is not permitted.
All modifications to the LG 150 System
VENTECH range of compact ventilation
units are prohibited. Only original spare
parts may be used.
Filter changing:
If a filter needs to be changed for the
LG 150 System VENTECH compact ventila-
tion unit range, the part of the unit's cov-
ering that can only be opened with tools
must not be opened. The ventilation unit's
fans and electrical system are positioned
behind this screwed covering.
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-de-
pendent fireplaces or extractor hoods.
See Section 3: “Designated Use“
PLANT OPERATION
Changes reserved
USER GENERALSPECIALIST PERSONNEL

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 10
SPECIALIST PERSONNEL GENERAL
USER
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 150 System VENTECH
compact ventilation unit supplied.
6. Ventilation unit assembly guide for users
The LG 150 System VENTECH compact
ventilation unit range is suitable for ceil-
ing installation or wall mounting in areas
free of frost.
The unit’s scope and designated use
is limited to use in ventilation and air
conditioning systems for the extraction of
used air and the supply of fresh, temper-
ature-controlled outdoor air in order to
improve air quality.
The components accessible to the user
are:
• Compact, heat-insulated unit housing,
exterior powder-coated in RAL 9010
• Air filter, quality grade F7 or F9 in out-
door air and G4 in extract air
• “MINI” control unit
• Optional “TOUCH” control unit
“MINI” control unit
Extract air filter G4
Outdoor air filter F7 or F9
USER GUIDE
Changes reserved
“TOUCH” control unit
J. Pichler Gesellschaft m.b.H.
9021 KLAGENFURT
Karlweg 5, Postfach 32
T+43 (0)463 32769
Tuesday, 15.03.2016
13:45
Summer
Temperature 23.5°C
(time program)
Ventilation stage 3
(time program)
Menu

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 11
The following compact ventilation unit
functions can be configured with the
“MINI” control unit.
• Unit’s ventilation level
• Switch between summer and winter
mode
• Display of filter change messages
•Display of possible fault messages with
the LEDs provided.
•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
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 or 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 collector into the living area at
nighttime.
Changing ventilation level:
The two buttons on the right-hand side
change the unit’s ventilation level.
Pressing the [+] button increases the
ventilation level until level III is reached
which corresponds to boost ventilation.
After 1 hour operating time in the high-
est ventilation level, normal ventilation
mode is automatically reset to Level 2.
The boost ventilation may, alternatively,
also be stopped manually after one hour.
Pressing the [-] button reduces the ven-
tilation level.
Basic Ventilation operating mode:
If the ventilation level is less than I, the
unit switches into Standby mode or into
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 has “Basic Ventilation” status, this is
recognisable by ventilation level I flashing
gently.
The LEDs for summer and winter mode
are located on the left-hand side, ar-
ranged next to the corresponding buttons.
Filter change required:
The potential need to change the filter is
signalled by the LED on the bottom left.
See Section 9 for details on filter changing
Error messages
The LED for error messages is located on
the bottom right-hand side. Please contact
your installer!
BUTTONS AND LEDS
7. Control units for the user
Changes reserved
USER GENERALSPECIALIST PERSONNEL

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 12
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 currently active operating mode is
displayed by various buttons. The operat-
ing mode can be changed by pressing the
button. The following operating modes are
available:
Summer:
Summer or bypass mode
supports cooling of the living
area.
The bypass circumvents the heat ex-
changer and the cold outdoor air is blown
directly or via a ground collector into the
living area at night time.
Winter:
The outdoor air is always
conveyed via the heat
exchanger in winter operation.
An auxiliary heater is given clearance only
in winter mode.
Changes reserved
Tuesday, 15.03.2016
13:45
Summer
Temperature 23.5°C
(time program)
Ventilation stage 3
(time program)
Menu
Operating mode settings
Summer
Winter

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 13
VENTILATION LEVEL The currently active ventilation level is
displayed by various buttons. The selected
ventilation level can be changed by press-
ing 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 unit 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.
Pressing the [+] button increases the
ventilation level until level III is reached
which corresponds to boost ventilation.
After 1 hour operating time in the high-
est ventilation level, normal ventilation
mode is automatically reset to Level 2.
The boost ventilation may, alternatively,
also be stopped manually after one hour.
Pressing the [-] button reduces the ven-
tilation level.
*depending on unit configuration!
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!
Changes reserved
Ventilation stage settings
Time program
Ventilation stage 2
Ventilation stage 1
Ventilation stage 3
Off
Time program
Ventilation stage 2
Ventilation stage 1
Ventilation stage 3
Basic ventilation
Ventilation stage settings
USER GENERALSPECIALIST PERSONNEL

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 14
USER GENERALSPECIALIST PERSONNEL
Changes reserved
In principle: “Ventilate
as much as is necessary”
Adjustment of air volume requires
relevant expertise and is performed by a
specialist during initial start-up. If venti-
lation 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 op-
erating modes that result in your ventila-
tion unit being operated with air volumes
other than those set.
These include:
CO2 concentration-based control (Figure1)
Acceptable room air should not exceed
a CO2value of 1000 ppm, meaning that
active ventilation should take place every
1 to 2 hours. A living room ventilation
unit with CO2 concentration-based control
(CO2sensor module available as part of
the accessories) automatically ensures
that a defined CO2value of 900 ppm is not
exceeded.
Humidity concentration-based control
(Figure2)
The relative humidity is a factor that also
contributes significantly to a comfortable
living climate. Acceptable humidity is
defined by a comfort window.
In the case of a ventilation unit with
humidity concentration-based control
(RH sensor module available as part of
the accessories), a permanently defined
relative humidity setpoint of 65 % is stored.
If this value is exceeded, the ventilation
unit switches to the highest fan stage for
60 minutes.
Figure 1: Schematic diagram showing the increase in CO2concentration in a flat/room with occupants with
and without mechanical ventilation.
Figure 2: Representation of the comfort window as a function of the air temperature and relative humidity.
Decreasing ability
to concentrate,
headache
Closed window
Mech. residential ventilation
Fresh ambient air: 400 ppm
Disruptive
Pleasant
Hours
CO
2
concentration in ppm
Constructional ceiling
(condensate, mould, etc.)
approx. 45 % to 55 %
Comfort level for human
beings 20 %
Ideal RH 35 % to 45 %
Relative humidity (RH) of the ambient air in %
Ambient temperature in °C
Uncomfortably dry
Uncomfortably dry
Comfortable
Still comfortable

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 15
Changes reserved
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
USER GENERALSPECIALIST PERSONNEL
bu
tt
tt
on.
Settings
22.0 °C
offon
Setpoint value
Time program
Temperature
Information
Current operating values
FAULT SIGNAL
Time meter
Firmware
FAULT SIGNAL
Error log
Current error
Filter log
Information
Settings
Actions
Tu, 15.03.2016
13:45
Current operating values
Fresh air temperature 20 ºC
Exhaust air temperature 18 ºC
Extract air temperature 21 ºC
Supply air temperature 21 ºC
Outdoor air temperature 19 ºC
Ambient air temperature 23 ºC
Time meter
Filter change in 62 days
Ventilation stage 1 2 hrs.
Ventilation stage 2 5 hrs.
Ventilation stage 3 3 hrs.
Basic ventilation 10 hrs.
Ventilation mode total 20 hrs.
Heater battery 2 hrs.
Bypass 0 hrs.

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 16
USER GENERALSPECIALIST PERSONNEL
Changes reserved
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. are preset). Three times can be spec-
ified for each day using the time program.
These times determine the time at which
a particular ventilation level is activated.
SETTINGS
Filter log
$LU¿OWHUFKDQJHG  
$LU¿OWHUFKDQJHG  
$LU¿OWHUFKDQJHG  
Current error
no entries
Lufttechnik PICHLER
Firmware control 2.0
Firmware display 1.0
LG model 150
Fan model 120
Error log
Z14 - sensor T4 open 08.08.15 11:30
Z13 - sensor T3 open 08.08.15 11:30
Z12 - sensor T2 open 08.08.15 11:30
Z11 - sensor T1 open 08.08.15 11:30
Z02 – data transmission fault 08.05.15 11:30
Z14 – condensate drip tray full 05.05.15 11:30
Settings
Air volume
$LU¿OWHUFKDQJHG
Temperature
Date & time
Language
Air volume settings
Time program
Ventilation stage 2 125 m3/h
Ventilation stage 1 90 m3/h
Ventilation stage 3 160 m3/h
Basic ventilation 30 m3/h
Time program ventilation stages
Stage 1 from 21:30
Stage 2 from 05:30
-- : --
Accept for all days
Monday

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 17
Changes reserved
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
USER GENERALSPECIALIST PERSONNEL
Time program temperature
Reduced from 18:00
Normal from 06:00
-- : --
Accept for all days
Monday
Settings
Standard mode 22.0°C
Time program
Setback mode 21.0°C
Air temperature
Date & time settings
Time
Date
Settings
No
$LU¿OWHUFKDQJHG
Date & time settings
2016
Mar15
Date
Year
Date & time settings
Tuesday
4513
Time
Day
Time program ventilation stages
from time
Monday
Stage 2
3005
Time program temperature
from time
Monday
Standard
3005

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 18
USER GENERALSPECIALIST PERSONNEL
Changes reserved
Language
The user can switch between Deutsch,
English, Francais, Nederlandse, Ceský,
Slovenskí and Italiano.
The following errors can be reset under
“Actions”:
Reset controlled BV (basic ventilation)/
OFF
The [+] and [–] options are displayed by
pressing the “No” button. The error is
reset by selecting “Yes” and confirming
with “OK”.
System monitoring:
Both fans’ rotational speeds are constant-
ly monitored. If there are discrepancies,
the procedures described below are
employed.
1st level:
If the outdoor air fan's rotational speed
exceeds the extract air fan's rotational
speed by a predefined value (rotational
speed limit) for 10 minutes, the system
switches back into basic ventilation mode
regardless of which ventilation level was
selected previously.
This is signalled by the yellow (filter) LED
flashing 6 times on the Mini control unit.
The “Z19 controlled BV” error message is
displayed on the Touch control unit.
If the rotational speed is not exceeded
here, the system remains operational with
basic ventilation.
If basic ventilation is activated by the
unit's monitoring system, the user can
switch to a dierent ventilation level
at any time using the [+] button. The
rotational speed continues to be mon-
itored and, if another error occurs, the
system reverts to basic ventilation after
10 minutes.
ACTIONS
Language
Deutsch
Français
English
Nederlandse
Cesky
Actions
Reset error Z04/Z05
Reset controlled BV/OFF
Settings
No
Reset controlled BV/OFF
Settings
No
Reset controlled BV/OFF

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 19
Changes reserved
Level 2:
If the rotational speed is exceeded for 10
minutes in active basic ventilation mode,
the system shuts down.
The red and yellow LEDs on the Mini con-
trol unit flash 6 times.
The “Z20 controlled OFF” error message
is displayed on the Touch control unit.
The system remains o until the error is
reset manually. The error is reset by:
• keeping the + and – buttons on the Mini
control unit pressed for 5 seconds.
• pressing the Menu button on the Touch
control unit. Then press the “Reset
Controlled BV/OFF” and, finally, confirm
with “Yes”.
If the rotational speed is exceeded again
after switching the system back on, the
process is repeated.
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.
USER GENERALSPECIALIST PERSONNEL
Settings
No
Reset error Z04/Z05
Settings
No
Reset error Z04/Z05

OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 150 PAGE 20
USER GENERALSPECIALIST PERSONNEL
Changes reserved
“TOUCH” CONTROL UNIT
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
Note signal Note reason
Controlled basic ventilation – level 1 of system monitoring.
The filter LED flashes briefly six times in succession, following by a long pause*
Controlled system shutdown – level 2 of system monitoring. The error and filter LED flashes briefly six
times in succession, following by a long pause*
8. Messages/Faults
From firmware version V.1.6 onwards,
error statuses for the ventilation unit are
signalled with flashing patterns on the
error LEDs.
Please contact your installer.
“MINI” CONTROL UNIT
*See pages 18/19 for detailed error descriptions
Current error
FAULT SIGNAL
Please contact your installer.