Pichler LG 500 System VENTECH User manual

Systematic ventilation.
COMFORT
VENTILATION
EN13141-7:2010
EU Regulation
1253/2014
ErP
2018
OPERATING AND
INSTALLATION INSTRUCTIONS
SYSTEM VENTECH LG 500
The specified energy eciency
is applicable when controlled to
local requirements and is valid
up to the specified maximum air
flow volume.

Contents
1Introduction ............................................................................................................................................. 4
2General .................................................................................................................................................... 4
2.1Use in compliance with the intended use .................................................................................................. 5
2.1.1 Intended use ............................................................................................................................................................5
2.1.2 Stipulations for operation with fireplaces .................................................................................................................6
2.1.3 Stipulations in connection with extractor hoods ........................................................................................................6
2.2Liability .................................................................................................................................................... 6
2.3Warranty .................................................................................................................................................. 6
3Safety ...................................................................................................................................................... 7
3.1Symbols used ........................................................................................................................................... 7
3.2Safety regulations .................................................................................................................................... 8
3.2.1 General ....................................................................................................................................................................8
3.2.2 Setting up the unit ....................................................................................................................................................8
3.2.3 Electrical connection work .......................................................................................................................................9
3.2.4 Operation of the system ...........................................................................................................................................9
4Functioning of the ventilation system .................................................................................................. 10
4.1System description ................................................................................................................................. 10
4.2Possibilities of system expansions for frost protection ........................................................................... 11
4.2.1 Earth heat exchanger (factory settings) ..................................................................................................................11
4.2.2 Brine geothermal energy with optional cooling function (factory setting) ................................................................12
4.2.3 PTC low temperature preheater battery factory setting ..........................................................................................13
4.2.4 Anti-frost protection by shutting down the supply air fan ........................................................................................13
4.3System expansion for the purpose of external auxiliary heating ............................................................. 14
4.3.1 With external warm water heater battery (factory setting) ......................................................................................14
4.3.2 Needs-based system operation - CO2 control ..........................................................................................................14
4.4Ventilation unit ....................................................................................................................................... 15
4.4.1 Description ............................................................................................................................................................15
4.4.2 Advantages and features ........................................................................................................................................15
4.4.3 Layout of the unit ...................................................................................................................................................16
4.4.4 Versions .................................................................................................................................................................18
4.4.5 Dimensions ............................................................................................................................................................18
4.5Safety devices ........................................................................................................................................ 19
5Technical specifications ....................................................................................................................... 19
5.1Unit specifications .................................................................................................................................. 19
5.2Characteristic external pressure increase - air volume flow with volume flow constant function ........... 20
5.3Characteristic external pressure increase - air volume flow without volume flow constant function ...... 20
5.4Acoustic specifications ........................................................................................................................... 21
6Operator control unit ............................................................................................................................ 21
6.1General information ............................................................................................................................... 21
6.2Control unit " KOMFORT-G " ...................................................................................................................... 21
6.2.1 Buttons on the control unit "KOMFORT-G" ...............................................................................................................22
6.2.2 Representation on the display ................................................................................................................................22
6.2.3 Special menu 1 – Operating hour counter (only for specialist installers) .................................................................24
6.2.4 Special menu 2 - Language settings, basic ventilation, volume flows and fan speed IV ............................................24
7Power unit ............................................................................................................................................. 25
7.1Configuration and diagnosis via the PC software (only for specialist installers) ...................................... 25
7.1.1 Connecting the power section to a PC .....................................................................................................................25
7.1.2 Software overview .................................................................................................................................................26
8Messages/Faults .................................................................................................................................. 26
8.1Operating messages on control unit " KOMFORT-G " ................................................................................. 26
8.1.1 Deletion of the filter message after a requested filter change .................................................................................26
8.1.2 Deletion of the filter message after a premature filter change ................................................................................26
8.2Malfunction messages on control unit "
KOMFORT-G " .............................................................................. 27
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 2

9Scope of delivery, transport, storage and disposal ............................................................................ 28
9.1Scope of supply ..................................................................................................................................... 28
9.2Transport and Packaging ....................................................................................................................... 28
9.3Storage .................................................................................................................................................. 28
9.4Waste disposal ...................................................................................................................................... 28
10Installation ........................................................................................................................................... 29
10.1Prerequisites for installation of the unit ................................................................................................. 29
10.2Device installation ................................................................................................................................. 30
10.2.1 Setting up the ventilation unit - free-standing installation ....................................................................................... 30
10.2.2 Wall mounting ........................................................................................................................................................30
10.2.3 Production of the condensate water connection .....................................................................................................30
10.2.4 Connection of air lines and components .................................................................................................................31
10.3Electrical connection.............................................................................................................................. 31
10.3.1 Cable leadthroughs ................................................................................................................................................32
10.3.2 Connection between the operator control unit and power unit ................................................................................ 32
10.3.3 Installation of the operator control unit .................................................................................................................. 32
10.3.4 Circuit diagram ......................................................................................................................................................33
10.3.5 Mains connection and replacement of the unit’s internal fuse ................................................................................. 36
10.3.6 Connecting a water re-heater battery .....................................................................................................................37
10.4Initial startup ......................................................................................................................................... 37
11Servicing and cleaning ......................................................................................................................... 38
11.1Safety directions .................................................................................................................................... 38
11.2Customer service ................................................................................................................................... 38
11.3Service instructions for the user ............................................................................................................ 38
11.3.1 Air filters ...............................................................................................................................................................38
11.4Service instructions for the specialized installing company ................................................................... 39
11.4.1 Heat exchanger with bypass flap ............................................................................................................................ 39
11.4.2 Fans ......................................................................................................................................................................39
11.4.3 Electrical PTC preheater battery (optional) ............................................................................................................. 40
11.4.4 Unit’s housing - internal cleaning ...........................................................................................................................40
11.4.5 Condensate drainage .............................................................................................................................................40
11.4.6 Service table ..........................................................................................................................................................41
12Spare parts and accessories ............................................................................................................... 42
12.1Control elements ................................................................................................................................... 42
12.2System components .............................................................................................................................. 42
12.3Air filters ............................................................................................................................................... 42
13Subject to change ................................................................................................................................. 42
14Product fiche......................................................................................................................................... 43
15EG-Konformitätserklärung (EC Declaration of Conformity) ............................................................... 44
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 3

1 Introduction
Dear customer, thank you for your decision to purchase the compact ventilation unit LG 500 System
VENTECH.
The compact ventilation unit LG 500 System VENTECH is a state-of-the-art device. Its convincing features
are its high degree of economy, operator friendliness and operational safety.
To operate your compact ventilation unit safely, properly, and economically, please carefully read and comply
with these operating instructions.
Use the ventilation unit only in perfect condition, in compliance with the intended use, in a manner that is
safety and danger conscious and in compliance with all information provided in these instructions. If you have
any queries or spare parts orders, please have the device type and serial number (see type plate on the
device) at hand.
Please contact us if you have any further queries or you have lost the documentation:
2 General
This chapter contains general information on the compact ventilation unit LG 500 System VENTECH with
control unit type "
KOMFORT-G ".
READ THESE INSTRUCTIONS CAREFULLY BEFORE INITIAL STARTUP OF THE UNIT!
These instructions contain advice and information about the safe operation, installation, service and
maintenance of the compact ventilation unit LG 500 System VENTECH. It also serves as a reference for service
work so that this can be performed in a responsible manner. Please keep these operating instructions in a
safe place where they are always accessible. Any troubleshooting or work on the compact ventilation unit
must only be performed by an installation company (specialists). We are continuously improving and
developing our products. Your device may therefore differ slightly from the one referred to in these
instructions.
Subject to change without notice:
These instructions have been drawn up with the greatest care. However, no rights may be derived from them.
We constantly make every effort to make technical improvements to and optimizations of our products and
reserve the right to partially or wholly modify the units or technical specifications without prior notice.
For the compact ventilation unit LG 500 System VENTECH, our "General Terms and Conditions" in the
applicable version apply.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 4

The compact ventilation unit LG 500 System VENTECH, together with all the
optional system components cited in this description, has been subjected by TÜV-
AUSTRIA Services GmbH, Testing, Inspection and Certification Centre/Vienna to
a safety test and inspection in accordance with the relevant product requirements,
standards and directives. The mark approval certificate No. 0010-PS/PZW-EX-
0067-2010 of 8 March 2011 and test reports No. 2010-PS/PZW-EX-0067 and No.
M/EMV-10/220 confirm that the requirements of the relevant test points with the
optional system accessories are met, on the condition that the requirements of
these operating instructions are observed and adhered to
.
2.1 Use in compliance with the intended use
2.1.1 Intended use
The compact ventilation unit LG 500 System VENTECH is intended for installation into air treatments systems
with an adjustable air volume flow of 550 m³/h for the controlled mechanical ventilation of living areas and
rooms with similar purpose, such as seminar rooms and small offices.
The entire living area is provided with supply air and exhaust air ventilation by installing a mechanical,
controlled ventilation system for apartments. In this process there is a controlled air supply with conditioned
and filtered outdoor air in the supply air zones. Odours and humid indoor air are taken out of the extract air
zone.
The purpose of the controlled mechanical ventilation of living areas is to improve air quality and to reduce
heating requirements through the use of a highly efficient heat recovery system as well as influencing indoor
air humidity.
The application range and intended use of the device is limited to use in indoor air treatment systems for
exhausting consumed air and supplying fresh, temperate outdoor air at a maximum conveying temperature of
-15 °C to +35 Ԩ. In addition, the conveyed air must be free of aggressive vapours and wear-inducing
materials. Any other application shall be deemed to be diverting from the intended use. The manufacturer
shall assume no further liability for any damages or consequential damages resulting from non-intended use.
Intended use also includes observing our prescribed operating and installation instructions. This unit, which is
accessible for the general public, is intended for installation in residential or commercial buildings. The device
is used for mechanical ventilation of indoor air and also for air reheating in conjunction with a heater battery.
This device is not intended to be used by people (including children) with limited physical, sensory, or mental
capabilities or with a lack of suitable experience and/or knowledge, unless supervised by a person who is
responsible for their safety or from whom they receive instructions on how to use the device.
The unit is not suitable for installation in the open air and must be installed in suitable and temperature-
controlled indoor rooms. The ventilation unit is not suitable for drying out new-build properties. When the
device is shut down, ensure that no air circulation can occur through the device.
The compact ventilation unit LG 500 System VENTECH is not a ready-to-use product. It must not be put into
operation until it has been properly installed and connected in the indoor air treatment system. Only qualified,
assigned personnel may work on and with the device.
Any individual who transports, sets up or works on the device must have read and understood these
operating instructions, particularly Chapter 3 "Safety Instructions". In addition, the end user has to
be informed of any dangers that might occur.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 5

2.1.2 Stipulations for operation with fireplaces
Safety instructions and standards must be observed when using the device simultaneously with fireplaces
consuming indoor air. In the case of indoor air dependent fireplaces the combustion air supply for the
fireplace has to be provided separately.
Proper operation of ventilation systems based on the central “Compact ventilation unit LG 500 System
VENTECH” ventilation system requires that existing combustion air or waste gas ducts are isolated from
heating systems dependent on room air.
The ventilation unit LG 500 System VENTECH may only be installed in rooms, apartments and user units of a
comparable size in which indoor air dependent fireplaces are installed, if the simultaneous operation of
indoor air dependent fireplaces for liquid or gaseous fuels and of the apartment’s ventilation system is
prevented or the exhaust gas conveyance of the indoor air dependent fireplace is monitored by special safety
devices.
If the negative pressure in the room where the fireplace is installed is 4 Pa greater than the external pressure,
it must be ensured that the extract air system switches off automatically and reliably. In such cases, the input
"E3 fireplace mode" provided for this purpose can be used. When the contact is closed, the ventilation unit is
switched off immediately and "fireplace mode" is displayed on the control panel. When the contact is opened,
the ventilation unit returns to its original state.
2.1.3 Stipulations in connection with extractor hoods
On account of the heavy load and irregular operation the extract air of any kitchen extractor hood present
must not be integrated into the apartment’s ventilation system. The extract air from such extractor hoods
should be removed separately out of the roof via an exhaust air line. The supply air is provided separately, e.g.
via the window ventilation.
If an extractor hood is being operated without separate introduction of the supply air, the air volume balance
in the apartment is no longer balanced and the proper functioning of the apartment’s ventilation system is not
ensured (odour entrainment etc.). One possibility is to operate the extractor hood with adequate air filtering in
recirculated air mode.
2.2 Liability
The compact ventilation unit LG 500 System VENTECH has been developed and manufactured for use in the
controlled mechanical ventilation of living areas and rooms with a similar purpose, such as seminar rooms
and small offices.
Any other use is considered to be an improper use and can lead to personal injury or damage to the compact
ventilation unit LG 500, for which the manufacturer cannot be held liable. In the event of the following the
manufacturer is liable for no damage whatsoever:
non-compliance with the safety, operating and servicing instructions listed in these operating and
installation instructions
the installation of replacement parts that are not supplied by the manufacturer, whereby the
responsibility for the use of such replacement parts lies completely with the system installer/fitter.
normal wear
2.3 Warranty
The warranty begins with initial startup, at the latest, however, one month after delivery has taken place. The
warranty covers the pure replacement of materials only and does not include any claims for the
compensation of services. It applies only if there is proof of appropriately performed servicing in accordance
with our regulations and by a licensed company that specializes in installation work.
The warranty claim extends for a maximum period of 24 months after installation of the compact ventilation
unit LG 500 System VENTECH, however, up to a maximum of 30 months after the date of manufacture.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 6

Warranty claims can be asserted only for material and/or design defects that have occurred during the
warranty term. In the case of a warranty claim, the compact ventilation unit LG 500 System VENTECH may not
be removed without prior written approval of the manufacturer. The manufacturer accords a warranty on
spare parts only if they have been installed by an installer who is recognized by the manufacturer.
The warranty shall expire automatically at the end of the warranty period, or in the case of improper
operation, such as operating without filters, installation of parts not supplied by the manufacturer, or where
non-approved changes or modifications have been made to the system.
Failure to comply with these Operating and Installation Instructions will automatically void all warranties.
3 Safety
Read these operating and installation instructions carefully and observe the safety instructions for
installation work, commissioning or for general work or maintenance performed on the device.
Retain these operating and installation instructions during the entire service life of the device and keep them
in an easily-accessible location for future reference.
The safety instructions, warnings, comments and directions described in these operating instructions must
always be observed.
The specifications stated in this document may not be modified.
Non-observance of these safety instructions, warnings, comments and directions can result in physical injury
or damage to the compact ventilation unit.
We recommend purchasing a maintenance contract to ensure that the device is inspected and maintained at
regular intervals. Your supplier can provide you with the addresses of approved specialists/installers in your
area.
3.1 Symbols used
The following safety symbols indicate text passages that warn against dangers and sources of danger. Please
familiarise yourself with these symbols!
Caution/Important information!
Caution! The non-observance of this warning can lead to injury or danger to life and limb and/or
damage to the unit.
Caution - dangerous electrical voltage! The non-observance of this warning can lead to injury or
danger to life and limb.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 7

3.2 Safety regulations
3.2.1 General
Installation, commissioning, maintenance, and repair must be performed by an authorised specialist
(heating specialist firm/installation specialist firm).
The local national regulations and standards apply without restriction beyond these operating installation
instructions in respect of operation of the device. Ensure that your system installer/fitter shows you how to
operate the device and the control unit after installation. Use of the ventilation unit may only take place in
accordance with the use set out in point 2.1 ‘Use in compliance with the intended use`.
All safety and danger notices attached to the device and described in these instructions must be observed. In
the event of any malfunctions, shut down the unit immediately and secure it suitably against being switched
back on. Any malfunction of the device must be rectified immediately. After servicing and maintenance work,
the operating safety of the device should be re-established by expert personnel.
The attachment or installation of additional parts and components is not permitted. Any modifications or
changes to the compact ventilation unit LG 500 System VENTECH are prohibited. Only original replacement
parts may be used. Modifications and adaptations to the ventilation unit are not permitted and release the
manufacturer from any warranty and liability. Make sure that children do not play with the unit.
3.2.2 Setting up the unit
The national and local regulations must be observed for installation and setup.
The unit must be installed only in compliance with the national installation regulations. Installation
shall be performed in accordance with the general, locally valid construction, safety and installation
regulations of the appropriate local authority or of the water and electricity company and other institutions.
The unit may be installed only in frost-free and dry rooms. The room temperature in the set-up room must
have a continuous temperature between a minimum of +5 Ԩ and a maximum of +40 Ԩ. The device is intended
for free-standing installation or wall mounting and may only be set up when there is suitable load-bearing
floor or wall construction. No vibrations must be allowed to affect the unit. A suitable water drain with
effective drain trap (siphon) must be provided for discharging condensate water accumulated during
operation of the device.
Installation work for the water, heating and condensate water connections may only be performed by a
professional. Proper installation is essential for ensuring the water-tightness and effectiveness of the
condensate discharge line and in order to prevent damage to the building. The condensate drainage has to be
checked for operability by means of an on-site inspection prior to initial startup and after any servicing work.
The permitted maximum expectable load has to be heeded for transportation of the unit. System components
of the ventilation system, such as air lines, that are installed in potentially unheated areas must be suitably
insulated to prevent heat loss or condensate water formation (where temperatures fall below the dew point).
The locally-applicable construction and fire prevention provisions, regulations and standards must be
adhered to. Appropriate suitable measures for erection of the unit, e.g. the installation of fire dampers in air
pipes etc., may have to be taken. Take into consideration the ambient influences and do not install the
ventilation unit in the vicinity of combustible liquids or gases, in swimming pools or in areas subject to the
influence of chemicals.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 8

3.2.3 Electrical connection work
Electrical connection work and work on the electrical parts of the system may be performed only by
authorized skilled electricians in compliance with national and local regulations.
Before opening the device and during all work on the device, such as maintenance work, repairs etc., the
device must be disconnected from power (power supply disconnected at all poles) and must be secured
against being switched on again for the duration of the work.
The compact ventilation unit LG 500 is designed for a voltage supply of 230 V/50 Hz/16 A. The device is not
designed for electrical connection to a three-phase supply network with 400 V/50 Hz! Refrain from any
manner of working that impairs the safety of the unit. For safe operation, safety devices may not be
disassembled or placed out of operation.
The electrical equipment and the warning and protection devices of the unit have to be regularly checked for
perfect operability. The device must be placed out of operation immediately if malfunctions occur in the
electrical supply or defects are detected, such as loose connections or melted cables.
If the mains power cable of the device is damaged or defective, it must be repaired immediately to prevent
risks. Only genuine fuses with the prescribed current strength and dimensions may be used. Operation of the
unit is prohibited until safe operation of the system has been re-created.
Only qualified electrical specialists may determine the cause of occurring defects and malfunctions and
immediately rectify them. After electrical work has been performed, the safety measures on the device must
be checked (e.g. earthing resistance etc.).
3.2.4 Operation of the system
Operation of the ventilation unit is only permitted if all required connections in conjunction with the
provided installed components, such as sound absorbers etc., have been properly established.
Upon the occurrence of any defects or damage that are able to injure people or damage property, the system
has to be put out of operation immediately. Further operation must be effectively prevented until the device is
completely repaired! Where fault messages or damage occur, the device must be immediately switched off
and disconnected from the mains.
When opening the front covers or removing cover plates, act in a safety-conscious manner and be aware of
the risks. Every working method that impairs safety is prohibited. Operation of the device is only permitted
with a connected air line or installed system components, such as sound absorbers, with a minimum line
length of 1000 mm to ensure that the fans or electrical components, for example, cannot be touched by hand.
The ventilation unit must be operated only in compliance with the project documents. These must comply with
the equipment and product safety act and with the relevant applicable stipulations of the EC directives and
standards.
Never operate the ventilation unit without installed air filters. The air filters must be checked regularly for
contamination and damage and cleaned or replaced if necessary. The air filters are to be replaced at least
every six months or when the "filter change" message appears on the control unit. Use only genuine spare
filters. If the system is not in operation in the summer, for hygienic reasons the air filters have to be replaced
before putting it back into operation.
In case of simultaneous use of the ventilation unit with fireplaces consuming indoor air, the applicable safety
instructions and standards must be observed. In the case of indoor air dependent fireplaces the combustion
air supply has to be provided separately. Advice on this is provided under point 2.1.2 "Provisions for
operation with fireplaces".
Owing to their heavy loading and irregular operation, extractor hoods must not be integrated into the extract
air or exhaust air circuit of the ventilation unit. Advice on this is provided under
point 2.1.3 "Provisions for
use with extractor hoods
" . Exhaust air extractor hoods must be operated via separate air lines, with
provision for a suitable fresh air supply, e.g. by opening windows, or via suitable air filters in recirculated air
mode.
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 9

4 Functioning of the ventilation system
4.1 System description
In the case of mechanically controlled apartment ventilation the consumed, humid extract air from the wet
rooms of the apartment, e.g. bathroom, toilet and kitchen, is discharged and replaced by conditioned, fresh
and filtered outdoor air in the residential areas such as the lounge, bedrooms and other living areas.
High energy savings in the operation of the ventilation unit can be realised through needs-based system
operation, the use of a highly efficient heat exchanger for the recovery of heat from the extract air into the
supply air and the use of energy-efficient fans with the latest EC technology.
It should be particularly ensured that the highly efficient heat exchanger is protected against freezing via a
suitable, controlled frost-protection strategy and that an effective condensate water outlet, among other
measures, is in place. The more airtight the building shell and the more effectively a house is insulated, the
more effective this technology is.
Fig 1 - Circuit diagram of system components
The circuit diagram illustrates the fundamental design of the domestic ventilation unit with the optional
additional system enhancements.
1 - Unit’s housing
2 - Supply air fan in EC execution
3 - Extract air fan in EC execution
4 - Outdoor air filter for fine dust F7
(optional as pollen filter in quality category F9)
5 -Extract air filter G4 for coarse dust
6 - Counterflow heat exchanger
7 - Bypass flap
8 - Frost pre-heating for counterflow - heat exchanger (optional)
9 - Condensate water tank with discharge and drain trap
(siphon) supplied by the customer
10 - Connection pieces for the ventilation unit
11 - Sound absorbers (optional) in the line system
12 - Switchable flap (optional)
13 - Re-heater battery design with warm water (optional)
with downstream supply air temperature sensor
14 - Earth heat exchanger (optional)
15 - Suction element with pre-filter G4
16 - Heater, cooling battery for brine EHE
(earth heat exchanger) (optional)
OPERATING AND INSTALLATION INSTRUCTIONS SYSTEM VENTECH LG 500 PAGE 10