Paul NOVUS 300 User manual

Version: 2.0_10/2014 EN

Version: 2.0_10/2014 EN
Legal provisions
All rights reserved.
This operating manual has been compiled with the greatest care. However, the editor does not assume
any liability for damages resulting from missing or incorrect information contained in this operating
manual. We reserve the right to change the content of this manual partially or completely at any time
without prior notification.
The information contained in these documents is the property of PAUL Wärmerückgewinnung GmbH.
The publication, whether partially or completely, requires the written consent of PAUL
Wärmerückgewinnung GmbH. Any in-house reproduction intended to evaluate the product or for proper
use is permitted and is not subject to approval.
PAUL manufacturer warranty
The current warranty terms can be downloaded from the Internet (www.paul-lueftung.de) or can be
obtained in hard copy via the usual channels of distribution.
Trademarks
All trademarks are acknowledged, even if they are not labelled separately. A missing labelling does not
mean that a good or sign is free of trademark rights.
PAUL Wärmerückgewinnung GmbH
August-Horch-Straße 7
08141 Reinsdorf
Germany
Phone: [phone]
Fax: [phone]
Web: www.paul-lueftung.de
E-Mail: [email protected]
© 2014 PAUL Wärmerückgewinnung GmbH. All rights reserved.

3
Index
0Preamble ................................................................................................................................. 6
Validity...................................................................................................................................... 6
0.1
Target group............................................................................................................................. 6 0.2
1Introduction ............................................................................................................................ 7
Warranty and Liability .............................................................................................................. 7
1.1
Warrant Terms ......................................................................................................................... 7 1.1.1
Liability ..................................................................................................................................... 7 1.1.2
Safety ....................................................................................................................................... 7 1.2
Intended use ............................................................................................................................ 7 1.2.1
1.2.1.1 Heat recovery unit NOVUS ...................................................................................................... 7
1.2.1.2 Control unit............................................................................................................................... 8
Qualification of the target group............................................................................................... 8
1.2.2
1.2.2.1 Operators ................................................................................................................................. 8
1.2.2.2 Qualified personnel .................................................................................................................. 8
Notes on safety ........................................................................................................................ 8
1.3
Safety appliances and measures............................................................................................. 8 1.3.1
Used symbols........................................................................................................................... 8 1.3.2
2Hints for the operator and the qualified personnel ............................................................ 9
Product description .................................................................................................................. 9
2.1
Type plate .............................................................................................................................. 10 2.1.1
Requirements on the assembly site....................................................................................... 11 2.1.2
Frost protection ...................................................................................................................... 11 2.1.3
Joint operation with heat-producing appliances..................................................................... 11 2.1.4
Available control modules ...................................................................................................... 11 2.2
LED control panel .................................................................................................................. 11 2.2.1
2.2.1.1 Operating functions LED control panel .................................................................................. 12
2.2.1.2 Signalling of operating and error conditions .......................................................................... 13
TFT touch panel..................................................................................................................... 14
2.2.2
2.2.2.1 Operating function and signalling of the TFT touch panel ..................................................... 15
Menu structure of the TFT touch panel.................................................................................. 17
2.3
Main menu Information .......................................................................................................... 18 2.3.1
2.3.1.1 Submenu Current message ................................................................................................... 18
2.3.1.2 Submenu Last messages ...................................................................................................... 18
2.3.1.3 Submenu Fan speeds............................................................................................................ 18
2.3.1.4 Submenu Current status of the device .................................................................................. 18
2.3.1.5 Submenu software versions................................................................................................... 18
2.3.1.6 Submenu Connected devices ................................................................................................ 18
2.3.1.7 Submenu Filter run-time ........................................................................................................ 18
2.3.1.8 Submenu Operating hours..................................................................................................... 18
Main menu Settings ............................................................................................................... 18
2.3.2
2.3.2.1 Submenu Fan speeds............................................................................................................ 18
2.3.2.2 Submenu Filter....................................................................................................................... 19
2.3.2.3 Submenu Frost protection...................................................................................................... 19
2.3.2.4 Submenu Automatic............................................................................................................... 20
2.3.2.4.1 Automatic timing..................................................................................................................... 20
2.3.2.4.2 Automatic sensor ................................................................................................................... 21
2.3.2.5 Submenu Date/Time .............................................................................................................. 22
2.3.2.6 Submenu Choose language .................................................................................................. 22
2.3.2.7 Submenu By-pass.................................................................................................................. 22
2.3.2.8 Submenu Screen dimming..................................................................................................... 23
2.3.2.9 Submenu Key lock ................................................................................................................. 23
2.3.2.10 Submenu Supplementary heating ......................................................................................... 23

4
2.3.2.11 Submenu Flap of the Geothermal Heater Exchanger (GHE) ................................................ 23
2.3.2.12 Submenu Cooling brine defroster .......................................................................................... 24
Boost ventilation mode with external boost ventilation sensing device ................................. 24
2.3.3
Maintenance by the operator ................................................................................................. 24 2.4
Replacement of the filter ........................................................................................................ 24 2.4.1
Resetting the filter run-time.................................................................................................... 27 2.4.2
2.4.2.1 Resetting the filter run-time by means of the LED control panel ........................................... 27
2.4.2.2 Resetting the filter run-time by means of the TFT touch panel.............................................. 27
What to Do in the Event of a Failure? .................................................................................... 28
2.4.3
Disposal.................................................................................................................................. 28 2.5
3Hints for qualified personnel .............................................................................................. 29
Prinzipal configuration of the system ..................................................................................... 29
3.1
Installation requirements ........................................................................................................ 29 3.2
Transport and packing ........................................................................................................... 30 3.2.1
Checking of the scope of delivery .......................................................................................... 30 3.2.2
Mounting................................................................................................................................. 30 3.3
Wall mounting ........................................................................................................................ 30 3.3.1
Mounting on a mounting frame .............................................................................................. 32 3.3.2
Air duct connection................................................................................................................. 34 3.3.3
Connection of the Condensate Drain..................................................................................... 35 3.3.4
Electrical connections ............................................................................................................ 37 3.4
Connection of the adapter board ........................................................................................... 38 3.4.1
Connection of the TFT touch panel........................................................................................ 38 3.4.2
Connection of several TFT touch panels ............................................................................... 39 3.4.3
Connection of the LED control panel ..................................................................................... 40 3.4.4
Connection of external boost ventilation switch..................................................................... 40 3.4.5
Connection of external sensors ............................................................................................. 40 3.4.6
Connection status relay.......................................................................................................... 41 3.4.7
Connection external release .................................................................................................. 41 3.4.8
Connection digital inputs or outputs....................................................................................... 41 3.4.9
Operation without a control unit connected............................................................................ 42 3.4.10
Commissioning of the NOVUS............................................................................................... 42 3.5
Operational readiness ............................................................................................................ 42 3.5.1
Adjusting the air volume flow ................................................................................................. 42 3.5.2
3.5.2.1 Adjustment of the nominal air flow with TFT touch panel ...................................................... 42
3.5.2.2 Adjustment of the nominal air flow with LED control panel.................................................... 44
Adjustment of the Valves ....................................................................................................... 44
3.5.3
Menu settings by qualified personnel / service staff .............................................................. 45 3.6
Main menu Setup ................................................................................................................... 45 3.6.1
3.6.1.1 Submenu Frost protection...................................................................................................... 45
3.6.1.2 Submenu Fan speeds ............................................................................................................ 46
3.6.1.3 Submenu Supplementary heating.......................................................................................... 47
3.6.1.4 Submenu By-pass.................................................................................................................. 47
3.6.1.5 Submenu Flap of the geothermal heat exchanger (GHE) ..................................................... 49
3.6.1.6 Submenu Reset factory data.................................................................................................. 49
Maintenance and repair by qualified personnel ..................................................................... 49
3.7
Inspecting and cleaning the heat exchanger ......................................................................... 49 3.7.1
Replacement of the heat exchanger type .............................................................................. 52 3.7.2
Inspection and cleaning of the integrated defroster (option).................................................. 52 3.7.3
Visualisation of errors and error treatment............................................................................. 53 3.8
Error signalling by means of the LED control panel............................................................... 53 3.8.1
Visualisation of errors with the TFT touch panel.................................................................... 53 3.8.2
Technical description ............................................................................................................. 55 3.9
Types of device ...................................................................................................................... 55 3.9.1
Designs .................................................................................................................................. 55 3.9.2

5
Technical specification NOVUS (F) 300 ................................................................................ 55 3.9.3
Technical specification NOVUS (F) 450 ................................................................................ 57 3.9.4
Dimensional sketch................................................................................................................ 59 3.9.5
Plant 1 circuit diagram NOVUS.............................................................................................. 60 3.9.6
Plant 2 circuit diagram NOVUS with integrated defroster...................................................... 61 3.9.7
Plant 3 Terminal scheme of through terminal X10................................................................. 62 3.9.8
Appendix:
Check List A Maintenance Works of the User
Check List B Maintenance Works of skilled Personnel
Air Flow Report
Commissioning and Handover Certificate
EC Declaration of Conformity NOVUS (F) 300/450 series

6
0 Preamble
Thank you for deciding on the heat recovery unit NOVUS (F) 300/450.
Validity 0.1
This document applies to the following types of devices:
•NOVUS (F) 300 series
•NOVUS (F) 450 series
The types of device NOVUS (F) 300 series and NOVUS (F) 450 series, are hereinafter referred to under
the common product name NOVUS, unless details are for type differentiation.
The heat recovery unit (HRU) NOVUS has been built according to the current state of the art and the
acknowledged rules on safety. The device is subject to permanent improvement and development.
Therefore, your device may differ slightly from the instructions.
In order to guarantee a safe, appropriate and economic operation of the heat recovery unit NOVUS,
please observe and comply with all information and notes on safety in this operating manual.
Subject of this operating manual is the heat recovery unit NOVUS in different design variants. Possible
accessories are only described insofar as it is necessary for the appropriate operation. Please see the
particular manuals for further information on accessories.
Target group 0.2
The operating manual is intended for operators and qualified personnel. The activities may only be
carried out by personnel having a corresponding formation and being sufficiently qualified for the
respective work.
Besides the general section 1 Introduction, this manual consists of:
•A part for the operator and qualified personnel →section 1 and 2
•A part specifically intended for qualified personnel →section 1 and 3

7
1 Introduction
This section contains general information on the heat recovery unit NOVUS.
Warranty and Liability 1.1
Warrant Terms 1.1.1
Our “General Terms and Conditions” apply to the NOVUS in their respectively valid version. The warranty
is determined by the legal warranty terms. It solely applies to the replacement of material and does not
include the service. It only applies if it is proven that maintenance is carried out by qualified personnel in
accordance with our regulations.
The warranty shall expire once/ when:
•the warranty period has elapsed;
•the device is operated without original PAUL-filters;
•parts are installed which were not delivered by the manufacturer;
•the device is improperly used;
•the defects occur due to incorrect connection, improper use or soiling of the system;
•unauthorised changes or modifications on the plant are made.
Liability 1.1.2
The NOVUS was developed and manufactured for use in so-called comfort ventilation systems. Any other
use is considered as “improper use” and can result in damages to the NOVUS or in personal injuries, for
which the manufacturer cannot be made liable. The manufacturer is not liable for any damage, which is
due to the following causes:
•Non-observance of the notes on safety, operation and maintenance, stated in this manual;
•The installation was not performed according to the regulations;
•Mounting of the spare parts, which were not delivered and prescribed by the manufacturer;
•The defects occur due to incorrect connection, improper use or soiling of the system;
•The warranty period has elapsed;
•Normal wear.
Safety 1.2
Please always observe the safety instructions in this operating manual. The non-observance of the safety
instructions, warning notices, notes and instructions can lead to injuries or damages to the NOVUS.
Intended use 1.2.1
This device is not intended to be used, maintained or cleaned by persons (including children) with limited
physical, sensory or mental aptitude or without sufficient experience and/or knowledge, unless they are
supervised by a person responsible for safety or have received instructions by that person on how to use,
maintain and clean the device. Children must not play with the device.
1.2.1.1 Heat recovery unit NOVUS
The heat recovery unit can be used for controlled ventilation in living and office areas (with reservations in
the industrial sector) at usual interior air humidity of approx. 40 – 70 % r. F., temporarily up to approx. 80
% r. F. Any other use is considered as being diverted from the intended use. The heat recovery unit is not
designed to discharge excessive air humidity, especially in the first utilisation phase of new buildings.
For safety reasons, it is not permitted to modify the product or to install parts which are not expressly
recommended for this product or distributed by PAUL Wärmerückgewinnung GmbH. Only use the
NOVUS in accordance with the information contained in the enclosed documentation and the standards
and directives valid on site:
•Do not mount the device in explosion-prone areas;
•Do not use the device to exhaust inflammable or explosive gases;
Lethal voltages occur inside the NOVUS:

8
•
Only operate the device with the casing cover being mounted;
The specifications mentioned in this document must not be changed:
•
The instructions for regular checking and maintenance of the device must be strictly complied with;
•
Any modification of the NOVUS is prohibited;
All enclosed documentation is a part of the product:
•
Read and observe the documentation;
•
Store the documentation in such a way that they are accessible at any time.
1.2.1.2 Control unit
By means of the control units TFT touch panel or LED control panel, you configure and operate the
system from a central point. Both control units are exclusively suitable for indoor use.
Qualification of the target group 1.2.2
1.2.2.1 Operators
Operators must be instructed by qualified personnel:
•
Instruction on risks when handling electrical devices;
•
Instruction on the operation of the system;
•
Instruction on the maintenance of the NOVUS;
•
Knowledge and observance of this manual with all notes on safety.
1.2.2.2 Qualified personnel
Qualified personnel must possess the following qualifications:
•
Training in dealing with dangers and risks by the installation and operation of electric devices;
•
Training for the installation and commissioning of electrical equipment;
•
Knowledge and attention of the building, security and installation rules valid on the spot of the
appropriate municipalities, the waterworks and power plant and other official rules and directives;
•
Knowledge and observance of this document with all safety notices.
Only a recognized specialist is, unless otherwise specified in this manual, entitled the NOVUS to install,
connect, bring into service and maintain.
Notes on safety 1.3
Safety appliances and measures 1.3.1
•Do not operate the NOVUS without having connected air ducts with a minimum length of 900 mm;
•The casing of the NOVUS cannot be opened without tools;
•Before opening the casing, the device must be disconnected from the power supply;
•When working on electronic parts of the device, and antistatic wrist strap must be worn.
Used symbols 1.3.2
This manual contains the following advisory and safety symbols:
Special notice!
Caution, risk of: - Damages to the device or the system
- Impairment of the device’s operation, if the instructions are not
strictly complied with.
Caution, risk of: - Injury of the operator or the qualified personnel

9
2 Hints for the operator and the qualified personnel
This section describes how to use the NOVUS.
Product description 2.1
The NOVUS is a ventilation device with heat recovery for healthy, balanced and energy-saving comfort
ventilation. A comfort ventilation system consists in exhausting stale, odorous air for example from the
kitchen, the bathroom, W.C.s and in introducing an equal quantity of fresh air into living rooms, bedrooms
and children’s rooms.
In the NOVUS 300 series and NOVUS 450 series are designed with patented reverse flow channel heat
exchanger of plastic for the heat recovery. The NOVUS F 300 series and NOVUS F 450 series are
equipped with a membrane moisture heat exchanger (enthalpy exchanger) which, due to its physical
properties, is not only able to transfer heat, but also moisture. The casing is made of powder-coated
sheet metal with anthracite colouring. The internal lining made of high-quality polypropylene provides the
necessary heat insulation and device noise protection.
The NOVUS has a sensor-regulated motor-driven by-pass flap. The summer and winter by-pass is an
additional circulation duct, which (temporarily) prevents the heat transmission between the exhaust and
supply air. The by-pass works automatically.
The two types of device NOVUS (F) 300 - series and NOVUS (F) 450 – series can optionally be delivered
being equipped ex works with an integrated defroster heater.
The NOVUS includes two maintenance-free 230 Vac radial fans with the integrated power supply unit
and electronic commutation. The volume flow constant fans keep the air quantity at a constant speed for
each selected fan rotary speed. The air quantity is also not affected by soiled filters.
One filter each for the intake air and the extract are installed in the device. They consist of a synthetic
woven filter medium with a frame made of polypropylene. Filters of the filter class F7 in pollen filter
quality can be optionally used for the outside air.
Access to the filtering is done on the colored (RAL3020) maintenance flap of the front panel.
Fig 1: Main components HRU NOVUS
Item Designation
A Interface sheet with IEC connector and RJ45 jack
B Filter (2x)
L
D
N
M
B
A
P
O
F H
Q
GI J
R
K
C E
S

10
C Filter cover caps
D Fans (2x)
E Seal fan cover
F EPP fan cover
G Carrier plate with control boards
H Plastic cover plate for control
I Front hood
J Maintenance flap
K Mounting sheet
L Casing made of coated steel sheet
M EPP moulded parts
N Screw connection condensate connection
O Motor-driven by-pass flap
P EPP by-pass cover
Q Internal defroster with PTC heating elements (optional)
R Heat exchanger with condensate pan
S EPP heat exchanger cover with sealing mat and strap
Tab. 1: Main components NOVUS
Type plate 2.1.1
The type plate clearly identifies the product. The information on the name plate are required for the safe
use of the product and regarding service queries. The type plate is located on the side of the air
connections of the HRU. The type plate must be permanently attached to the product.
Fig 2: Name plate NOVUS 300
Fig 3: Name plate NOVUS F 300
Fig 4: Name plate NOVUS (F) 450

11
Decrease / increase fan speeds
1 to 7
Boost ventilation mode
Supply air and extract air mode
Extract air mode
Supply air mode
Filter change / reset filter run-
time
Requirements on the assembly site 2.1.2
The heat recovery unit is suitable for being mounted in frost-free interior areas. The indoor-climate
ambient conditions must not permanently exceed 70 % r. F. at 22 °C.
Frost protection 2.1.3
The NOVUS is equipped with automatic frost protection which prevents that the heat exchanger freezes
at very low outside air temperatures. Depending on the set frost protection mode, the fans are temporarily
switched off when falling below the threshold values of the device intake air limit temperature. With regard
to the NOVUS-series with integrated defroster, a PTC heater battery is activated when falling below the
threshold values of the device outside air limit temperature. However, if it is fallen below the threshold
values despite the heat quantity supplied by the integrated defroster, the fans are temporarily switched off
as well.
The automatic frost protection for monitoring the supply air temperature serves as freezing protection of
an optional downstream hydraulic heater battery and temporarily switches off the fans when falling below
the threshold values of the limit temperature for the supply air.
Joint operation with heat-producing appliances 2.1.4
In case of simultaneous operation with heat-producing appliances, e.g. chimneys, the corresponding
standards and regulations must be complied with by the qualified personnel. The joint operation of indoor
air-dependant heat-producing appliances and ventilation plants requires an appropriate safety device
(differential pressure switch) or a plant-specific measure, in the event that dangerous negative pressures
can be generated in the installation room of the heat-producing appliance during operation. The NOVUS
is set up for the joint operation with heat-producing appliances.
Available control modules 2.2
The NOVUS can be equipped with the following control panels:
•Control unit LED control panel (w x h x d in mm: 80 x 80 x 12)
•Control unit TFT touch panel (w x h x d in mm: 102 x 78 x 14)
•External boost ventilation switch (any number, potential-free)
•External sensors with sensor signal 0-10 V or 4-20 mA
The ventilation device can be operated with up to 3 control units type TFT touch panel or
without control panel. A TFT touch panel is recommended for commissioning!
These control modules are explained in more detail in the following sections.
LED control panel 2.2.1
The LED control panel has 7 symbolized short-stroke keys. By pressing a key or key combination, the
corresponding operations are performed. The active mode of operation is signaled by means green or red
LED.
Fig. 1: Control and information fields of the LED control panel
Fig 5: Control and information fields of the LED control panel

12
2.2.1.1 Operating functions LED control panel
Symbol Designation Explanation
Key
Supply air and extract
air mode
By pressing this key, the supply and extract air mode are
set.
Key
Extract air mode
By pressing this key, only the extract air mode is set. The
supply air mode is switched off.
If the ventilation device is operated with a
heat-producing appliance, this key must be
permanently deactivated! The simultaneous
operation of ventilation plant and heat-producing
appliance requires increased safety-related
requirements for negative pressure monitoring with a
switch-off function for the ventilation device.
Key
Supply air mode
By pressing this key, only the supply air mode is set. The
exhaust air mode is switched off.
Key
Decrease fan speed
By pressing this key, the fan speed is gradually decreased.
Key
Increase fan speed
By pressing this key, the fan speed is gradually increased.
Key
Boost ventilation mode
By pressing this key, the boost ventilation is activated for
15 minutes in the supply air and extract air mode at the fan
speed 7. After the expiration of the boost ventilation time,
the previously active operating mode is activated. By
pressing another function key, the boost ventilation mode
can be cancelled at any time.
Key
Reset filter run-time
For cyclic filter checking, an operating hours counter is
integrated in the control. The key Reset filter run-time is
used for resetting the filter run-time.
…
Key combination
activation / deactivation
standby mode
By means of the standby function, the ventilation device is
switched to an energy-saving mode. By pressing the –key
several times until LED L1 goes off as well, the standby
mode is activated. This state is signalled by the periodic
blinking of the LED L8. When pressing the + key, the
standby mode is terminated and the fan speed 1 is set.
LED L1 is lit.
…
Key combination
configuration mode for
joint operation with
heat-producing
appliance
By pressing the key combination for at least 3 s, the
exhaust air mode is permanently deactivated. This state is
signalled by the LEDs L8+L11+L12, L8 and L12 being lit,
L11 blinking 2x and then remaining off. This signalling is
only visible if the key combination is held down. An
actuation of the key Exhaust air mode in deactivated
condition leads to three short blinking of the LED L11, in
order to signal the deactivated condition. If the key
combination is pressed once again for at least 3 s, the key
lock is deactivated. The change is signalled by the LEDs
L8+L11+L12, L8 and L12 being switched on, L11 blinking
2x and then remaining on. This signalling is only visible if
the key combination is held down. In this way, the extract
air mode is possible again.
The key Reset filter change must always be
pressed in the first place!

13
LED L8
LED L11
LED L10 LED L12
LED L9
LED L1 … L7
…
…
Key combination
configuration mode
upper temperature
threshold of by-pass
Keys for setting upper
temperature threshold
of by-pass
By pressing the key combination for at least 3 s, the
configuration mode upper temperature threshold of By-
pass is activated and the LEDs L8 and L10 are blinking.
By means of the keys, only the upper temperature
threshold for the opening of the by-pass can be adjusted in
dependency on the extract air temperature between 21°C
(LED L1) and 27°C (LED L7). The lower threshold has a
fixed pre-set value of 18°C. After the repeated actuation of
the key combination for at least 3 sec, the setting is applied
and the configuration mode upper temperature threshold of
by-pass is closed.
…
…
Key combination
configuration mode
imbalance
Keys for balance setting
By pressing the key combination for at least 3 s, the
configuration mode imbalance is activated and the LEDs
L10 and L12 are blinking. By means of the keys for balance
setting, the balance of the fan speed which was active
during the activation of the configuration mode imbalance
can now be adjusted in steps of 5 %. The balance setting is
not carried out separately for each fan speed, but jointly for
groups of fan speeds.
The adjustable range is from -15 % (L1) to + 15 % (L7). In
centre position (L4), the supply and extract air fans run at
the same rotation speed. After having actuated the key
combination once again, the setting is accepted and the
configuration mode imbalance is terminated.
The key Reset filter change must always be
pressed in the first place!
1. Group
fan speeds <1+2>
2. Group
fan speeds <3+4+5>
3. Group
fan speeds <6+7>
Tab. 2: Operating functions of the LED control panel
2.2.1.2 Signalling of operating and error conditions
LED signalling Function / meaning
LED lamp display
L1 ... L7
No LED ԑfan speed 0 (fan off, standby)
1 LED (L1) ԑfan speed 1
2 LEDs (L1 + L2) ԑfan speed 2
... etc.
7 LEDs (L1 + L2 + … + L7) ԑfan speed 7
L1 + L7 are lit No external release: fan off
Fig 6: LED signalling of the LED control panel

14
L8 is lit Supply and extract air mode
L8 blinks Error sensor: Fans are switched off, by-pass closes
L8 flashes Standby mode active
L8 + L10 blink Configuration mode for upper temperature threshold of by-pass
(display only during the configuration phase)
L8 + L11 + L12 blinken General error, the error number is displayed in a binary form by means of
the LEDs L1 to L7
(see Tab. 38 in section 3.8.1)
L8 + L12 are lit + L11 blinks
2x and then remains off
Configuration mode for joint operation with heat-producing appliance
(display only during the configuration phase)
L9 is lit Boost ventilation mode (L1 + L2 + L3 + L4 + L5 + L6 + L7 blink)
L10 is lit Filter run-time has expired
L10 flashes The remaining filter run-time is  10 days
L10 + L12 blink Configuration mode balancing for the selected fan speed
(display only during the configuration phase)
L11 is lit Extract air mode
L11 blinks Error fan 1 resonance: Fans are switched off, by-pass closes
L11 blinks briefly 3x Extract air mode deactivated (key Exhaust air mode locked, configuration
for joint operation with heat-producing appliance active)
L12 is lit Supply air mode
L12 blinks Error fan 2 resonance: Fans are switched off, by-pass closes
Tab. 3: Assignment of functions of the LED signalling
TFT touch panel 2.2.2
The 3.5“ TFT display of the touch panel is operated by touching the symbolised buttons with the fingers.
The display of the active operating mode and the corresponding button are signalled in colour. The start
menu is configured as follows.
Button Un-occupied mode
Display time Display filter symbol/ filter run-time
Button Boost ventilation mode
Schaltfläche Standby-Modus
Buttoon key lock
Button Menu mode
Button Fan speeds 1 – 2 – 3
Button Help
Display short help text
Button Automatic mode
Display messages / errorsDisplay of active operating mode
Fig. 2: Buttons and information fields of the touchpadFig 7: Buttons and information fields of the touchpad

15
2.2.2.1 Operating function and signalling of the TFT touch panel
Symbol Designation Explanation
- Fan speed 0 (FS0) The fans stand still. This fan speed is used in the functions
Automatic timing mode and Un-occupied mode.
Button
Fan speed 1 (FS1)
By touching this button, the lowest permanent fan speed 1 is
set.
Button
Fan speed 2 (FS2)
By touching this button, the medium permanent fan speed 2 is
set. This fan speed is adjusted by the service technician during
commissioning of the device in the setup menu. A balance
between the supply and the extract air fan is adjusted.
Button
Fan speed 3 (FS3)
By touching this button, the highest permanent fan speed 3 is
set.
Button
Boost ventilation mode
By touching this button, the boost ventilation mode is set. An
automatic timing programme starts where the fan speed 3 is
active during a pre-settable period of time (standard: 15 min
factory setting).
Button
Un-occupied mode
By touching this button, the un-occupied mode is set. For non-
occupation, a reduced ventilation intensity can be set for
humidity protection by activating the un-occupied mode. In
order to terminate this function, another button must be
pressed.
Button
Automatic mode
Automatic timing mode
Automatic sensor mode
The automatic mode has 2 automatic functions – automatic
timing and automatic sensor. The manual settings are
deactivated by touching the button.
By means of the automatic timing mode, different fan speeds
(FS0, FS1, FS2 or FS3) can be defined for every day of the
week with a resolution of 15 minutes. This “fan speed week
profile” can be configured and individually adjusted in the
menu Settings/submenu Automatic timing.
The automatic sensor mode regulates the fans according to a
pre-settable linear characteristic curve depending on an
analogue indoor air quality sensor (also CO
2
, air humidity and
temperature combined).
Button
Menu mode
By touching this button, you reach the information, setting and
setup menu.
Button
Standby mode
By means of the standby function, the ventilation device is
switched into an energy-saving mode. In standby mode, the
power consumption of the entire device decreases to less than
1 W. The screen display gets dark; however, the touchpad
remains active in order to “wake up” the system. One touch of
the touchpad suffices to terminate the standby mode.
According to DIN 1946-6, during the heating
period, the plant must be in operation for at least
12 h/d and must not be switched off longer than 1 h each
time!
Button
Help
By touching this button, you are redirected to a context-
sensitive help menu. If this key is grey, no help text is stored.

16
Button
Activate key lock
By touching this button, the touchpad is deactivated, except
for this button. The screen is dimmed and becomes inactive
(cleaning status).
Button
Deactivate key lock
If it is touched again and held down (for approx. 2-3 s) you
reach the start menu again.
Button
Checkmark
By touching this button, the desired or available parameter is
selected or confirmed.
Button
Enter
By touching this button, it is possible to navigate in the
different submenus. Changed parameters are copied into the
memory.
Button
Cancel / back
By touching this button, you change from a menu into the next
higher menu level without copying possibly changed data.
Signalling
messages
A flashing yellow warning triangle at the upper right edge
symbolizes a piece of information or an error. These are
registered in the menu Information/Current Message and
errors additionally in the menu Information/Last Message.
Signalling
filter symbol / filter run-
time
For cyclic filter checking, an operating hours counter is
integrated in the control. The operating hours are subtracted
from the preset filter run-time by counting backwards and are
displayed in days below the filter symbol. The filter symbol
colour changes from white to yellow when the filter run-time is
 10 d and from yellow to red when the filter run-time has
expired.
In case the filter run-time has expired, the message “Replace
filter” is generated.
Buttons
+ / -
By touching these buttons, values can be changed in the
menus (e.g. fan speeds in steps of 1% or the time in steps of
minutes or seconds).
The data is not copied until the Enter button is
touched!
Buttons
Navigation
By pressing the Navigation buttons left/right and up/down, it is
possible to navigate in the menus in order to select the desired
parameter in the respective menu level. If more than one value
can be set in one menu (e.g. for date and time: day, month,
year, hours, minutes), it is possible to select the single values
to be modified by means of the Navigation buttons and to
modify them by pressing + / -.
Tab. 4: Operating functions and signalling of the TFT touch panel

17
Menu structure of the TFT touch panel 2.3
The menu structure is made up of the start menu and three main menus (information, settings and setup).
When activating the TFT touch panel, the start menu is displayed. The main menus are each divided up
into submenus, allowing the access to information or parameter changes.
Fig 8: Menu structure of the TFT touch panel

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Main menu Information 2.3.1
The main menu Information is divided into eight submenus. In the submenus, information on the current
device status as well as selected factory pre-sets (e.g. type of device) are visualised. Using the navigation
buttons, the respective menu is selected and called up with the Enter key.
2.3.1.1 Submenu Current message
Here, a piece of information (e. g. Replace filter) or an error (e.g. Broken sensor) are displayed as current
message. In addition to this display, a yellow warning triangle flashes in the upper right edge of the
screen. Only error messages generally lead to switching off the fans.
2.3.1.2 Submenu Last messages
Here, the last three errors that occurred are registered in compliance with the event with date and time. In
addition to this indication, a yellow warning triangle is flashing at the right upper margin of the screen.
2.3.1.3 Submenu Fan speeds
Here, the percentage adjustments of the three fan speeds 1, 2 and 3 (FS1, FS2 and FS3) as well as the
pressed times for un-occupied and boost ventilation are indicated.
2.3.1.4 Submenu Current status of the device
Here, the current device-related supply air temperature and intake air temperature as well as the by-pass
status (closed / open) for devices with by-pass flap or the summer ventilation status (inactive / active) for
devices without by-pass flap are displayed
2.3.1.5 Submenu software versions
In this menu, the devices which are actually connected to the bus and which were identified are displayed
by means of checkmark symbols.
2.3.1.6 Submenu Connected devices
In this menu, the devices which are actually connected to the device-internal BUS and which were
identified are displayed by means of checkmark symbols.
2.3.1.7 Submenu Filter run-time
Here, the pressed filter run-time and the current remaining run-time of the filter are indicated. The filter
run-time is decremented daily.
2.3.1.8 Submenu Operating hours
The following information is displayed:
•Overall operating hours (time during which the device is connected to the power supply)
•Operating hours of the fans (time during which the fans are operating)
Main menu Settings 2.3.2
In the main menu Settings,changes by the user are possible which primarily serve the individual
adjustment to the own comfort. Using the navigation buttons, the respective submenu is selected and
called up with the Enter key, whereby only submenus with text highlighted in red can be parameterised.
The settings in the submenu are only applied after having touched Enter!
2.3.2.1 Submenu Fan speeds
Using the navigation buttons, the following can be selected and set here:
•Fan speed 1 and fan speed 3 (in 1 %-steps)
•Duration of the boost ventilation (in 5 min-steps)
•Ventilation intensity for non-occupation (FS1 in min/h)

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Symbol Designation Explanation / actions
Button
Fan speed 1 (FS1)
Using the button Fan speed 1, activate FS1 and parameterise
it with the navigation buttons.
Setting range: 17 % < FS1 < FS2
Button
Fan speed 3 (FS3)
Using the button Fan speed 3, activate FS3 and parameterise
it with the navigation buttons.
Setting range: FS2 < FS3 < 100 %
Duration boost ventilation Settings: 15 min …120 min,
whereby the air volume flow of the boost ventilation
corresponds to fan speed 3.
Ventilation intensity for
the duration of non-
occupation for humidity
protection
Settings: 15 min/h, 30 min/h, 45 min/h,
whereby the ventilation intensity of the active duration of the
time interval corresponds to fan speed 1.
Tab. 5: Parameterisation submenu fan speeds
2.3.2.2 Submenu Filter
The following can be set / read here:
•Filter run-time in 10-day-steps
•Current remaining run-time of the filter
•Retting of the filter run-time and the counter for exceeding the filter run-time
Symbol Designation Explanation / actions
Duration of the filter run-
time
Setting: 30 d … 180 d, using the navigation buttons
whereby a maximum filter run-time of 90 days is
recommended.
Remaining run-time of the
filter
Display of the current remaining run-time of the filter
Display field
Reset filter run-time
Using the button Checkmark and Enter, the filter run-time can
be reset to the pre-set value.
Tab. 6: Parameterisation submenu filter
2.3.2.3 Submenu Frost protection
Here, the frost protection mode can be set using the navigation buttons:
•Eco
•Safe
•Moisture heat exchanger (enthalpy exchanger) with own anti-freeze protection threshold
Symbol Designation Explanation / actions
Display field
Frost protection mode
Eco
In this “eco mode” however, there is a residual risk of freezing
of the heat exchanger. The energy required for frost protection
is lower.
Display field
Frost protection mode
Safe
In the “safe” mode, freezing of the heat exchanger is
absolutely prevented. The energy required for frost protection
is higher.
Display field
Frost protection mode
Moisture heat exchanger
In the mode Moisture heat exchanger, freezing of an enthalpy
exchanger (membrane moisture heat exchanger) is basically
prevented.
Tab. 7: Parameterisation submenu frost protection

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2.3.2.4 Submenu Automatic
Two operating modes are provided in the automatic mode:
•Automatic timing
•Automatic sensor
The desired operating mode of the automatic mode is selected using the navigation buttons (red
background of the text) and by setting the checkmark, and confirmed with Enter.
2.3.2.4.1 Automatic timing
Symbol Designation Explanation / actions
Button
Calendar
By touching the button Calendar, a weekday (Mo...Su) or a group of
weekdays (Mo-Fr; Sa-Su) is selected, the desired fan speed is
preselected.
Button
Fan speed 0
(FS0)
The fans stand still.
Button
Fan speed 1
(FS1)
Reduced ventilation
Button
Fan speed 2
(FS2)
Nominal ventilation
Button
Fan speed 3
(FS3)
Purge ventilation
Cursor The cursor marks the time in the ¼-hour-range. Using the navigation
buttons, the cursor is navigated across the time slot in which the
selected fan speed shall be active.
Tab. 8: Parameterisation automatic timing
By selecting a group of days (e.g. Mon-Fri), the change data are assigned to each day of the group. Thus,
the settings for the group “Mon-Fri” are then identical to the days “Mon”, “Tue”…”Fri” (or group “Sat-Sun”
identical to days “Sat”, “Sun”). In order to operate the plant with fan speed profiles and time profiles that
differ from day to day, the profile of the respective day (“Mon”…”Sun”) must be changed. Possibly further
changes in the groups “Mon-Fri” or “Sat-Sun” overwrite the previously made settings of the individual
days again!
Fig 9: Automatic timing factory setting, group weekdays Mon-Fri
Display weekday / group Cursor
Selection weekday / group
SymbolFLS0
Display active fan speed Display time cursor (Cursor status)
Symbol FS2 (Cursor status)
Symbol FS1
Symbol FS3