aerauliqa QR280ABP User manual

1
G
Read this manual carefully before using the product and keep it in a safe
place for reference as necessary.
This product was constructed up to standard and in compliance with regulations
relating to electrical equipment and must be installed by technically qualified
personnel.
The manufacturer assumes no responsibility for damage to persons or property
resulting from failure to observe the instructions contained in this manual.
1 Index 1
2 Precautions 2
3 Product information 2
3.1 General 2
3.2 Dimensions and Weight 3
3.3 Connections 3
3.4 Space required 4
3.5 Rating label 4
4 Transport and Storage 4
5 Installation 4
5.1 Unpacking 4
5.2 Where/how to install 4
5.3 Installation 5
5.4 Electric Connections 7
6 Commissioning 8
6.1 Setting Fan speed 8
6.2 Before Starting the System 8
7 Operation 9
7.1 User Menu on CTRL-DSP 10
7.2 Installer Menu on CTRL-DSP 12
7.3 Additional functionalities 15
8 Maintenance and service 16
8.1 Components list 16
8.2 Description of Components 16
8.3 Maintenance 17
8.4 Service 18
8.5 Trouble shooting 19
9 Disposal and recycling 20
1 INDEX
Installation Manual (installer & user)
QR280ABP - Heat Recovery Ventilation Unit

2
2 PRECAUTIONS
WARNING
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or
electrical work!
WARNING
The installation and service of the unit and complete ventilation system must be performed by an authorized installer and in
accordance with local rules and regulations.
TRANSPORT AND STORAGE
• Do not leave the device exposed to atmospheric agents (rain, sun, snow, etc.).
• Duct connections/duct ends must be covered during storage and installation.
INSTALLATION
• After removing the product from its packaging, verify its conditions. Do not leave packaging within the reach of children or
people with disabilities.
• Beware of sharp edges. Use protective gloves.
• The device should not be used as an activator for water heaters, stoves, etc., nor should it discharge into hot air/fume vent
ducts deriving from any type of combustion unit or tumble dryer. It must expel air outside via its own special duct.
• If the environment in which the product is installed also houses a fuel-operating device (water heater, methane stove etc., that
is not a “sealed chamber” type), it is essential to ensure adequate air intake, to ensure good combustion and proper equipment
operation.
• The electrical system to which the device is connected must comply with local regulations.
• Before connecting the product to the power supply or the power outlet, ensure that:
- the data plate (voltage and frequency) correspond to those of the electrical mains
- the electrical power supply/socket is adequate for maximum device power.
• For installation an omnipolar switch should be incorporated in the xed wiring, in accordance with the wiring rules, to provide
a full disconnection under overvoltage category III conditions (contact opening distance equal to or greater than 3mm).
USE
• The device should not be used for applications other than those specied in this manual.
• This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental
capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the
appliance in a safe way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
• Do not touch the appliance with wet or damp hands/feet.
• The device is designed to extract clean air only, i.e. without grease, soot, chemical or corrosive agents, or ammable or
explosive mixtures.
• Do not use the product in the presence of inammable vapours, such as alcohol, insecticides, gasoline, etc.
• The system should operate continuously, and only be stopped for maintenance/service.
• Do not obstruct ducts or grilles to ensure optimum air passage.
• Do not immerse the device or its parts in water or other liquids.
• Operating temperature: 0°C up to +40°C.
SERVICE
• Although the mains supply to the unit has been disconnected there is still risk for injury due to rotating parts that have not come
to a complete standstill.
• Beware of sharp edges. Use protective gloves.
• Use original spare parts only for repairs.
3 PRODUCT INFORMATION
3.1 General
This is the Installation Manual of QR280ABP heat recovery ventilation unit.
This manual consists of basic information and recommendations concerning installation, commissioning, use and service
operations to ensure a proper fail-free operation of the unit.
The key to proper, safe and smooth operation of the unit is to read this manual thoroughly, use the unit according to given
guidelines and follow all safety requirements.
The QR280ABP is supplied with its CTRL-DSP remote multifunction control panel as standard. The package also includes 2
condensation elbows and 2 plugs for the water drainage.
WARNING
If any abnormality in operation is detected, disconnect the device from the mains supply and contact a qualified technician
immediately.

3
A
BD
C
Weight Kg
23
3.2 Dimensions (mm) and Weight
3.3 Connections
Fig. 3.a Connections in LEFT orientation
Intake air from outside
Exhaust air to outside
Supply air to inside
Extract air from inside
Winter condensation drainage
Summer condensation drainage
A
B
D
C
F
E
LEFT Connections from and to outside are set on the left side of the unit front view DEFAULT
RIGHT Connections from and to outside are set on the right side of the unit front view
The factory setting is LEFT.
E
F
A
B
C
D

4
3.5 Rating label
Fig.3.c Rating label
To set the RIGHT orientation of the machine:
• Modify the orientation on the CTRL-DSP (point 7.2 - Installer menu: 3 Machine Orientation).
• Replace the ducting connection label on the top of the casing and the water drainage label on the bottom of the casing with
those supplied with this installation manual.
3.4 Space required
Make sure that enough space is left around the unit to allow easy maintenance (access to lters, terminal box and removal of the
side and front inspection panels).
Fig. 3.b Connections in RIGHT orientation
Intake air from outside
Exhaust air to outside
Supply air to inside
Extract air from inside
Winter condensation drainage
Summer condensation drainage
A
B
D
C
F
E
4 TRANSPORT AND STORAGE
The appliance is delivered in one carton box.
The appliance should be stored and transported in such a way that it is protected against physical damage that can harm spigots,
casing, display etc...
It should be covered so that dust, rain and snow cannot enter and damage the unit and its components.
5 INSTALLATION
This section describes how to install the unit correctly.
The unit must be installed according to these instructions.
5.1 Unpacking
Verify that the unit (and eventual accessories) delivered is according to order before starting the installation. Any discrepancies
from the ordered equipment must be reported to the supplier.
5.2 Where/how to install
• All QR units are meant for indoor installation in a heated space.
• Mount the unit on flat surface (wall).
• The unit must always be installed vertically.
• It’s important that the unit is completely leveled before it is put into operation.
• Place the unit preferably in a separate room (e.g. storage, laundry room or similar).
WARNING
Make sure that specific warnings and cautions in Chapter 2 “Precautions” are carefully read, understood and applied!
WARNING
Make sure that specific warnings and cautions in Chapter 2 “Precautions” are carefully read, understood and applied!
F
E
AB
CD

5
• When choosing the location it should be kept in mind that the unit requires maintenance regularly and that the inspection doors
should be easily accessible.
• Leave free space for opening the removable panels and for removal of the main components (see 3.4).
• The outdoor air grilles if possible be put in the northern or eastern side of the building and away from other exhaust outlets like
kitchen fan exhausts or laundry room outlets.
5.3 Installation
The unit must be installed in the following position.
It is important that the unit is vertical in order for the condensation drainage to work properly.
Fig. 5.a
517 mm
Fig. 5.b
Fig. 5.c Fig. 5.d
Fig. 5.fFig. 5.e
SPIRIT LEVEL
H=min. 60mm
Fig. 5.g

6
5.a Prepare the surface where the unit is to be mounted. Make sure that the surface is at, leveled and that it supports the weight
of the unit. Perform the installation in accordance with local rules and regulations.
5.b Drill the holes in the wall.
5.d.e Hang the unit to the wall by means of the xing brackets and screw safely (screws and wall plugs not supplied).
5.f Make sure that the unit is at spirit level.
5.g Connect the supplied condensation elbow(s) to the drainage hole(s) in the opening at the bottom of the unit: in case close
and seal the non-used hole with the 2 supplied plugs (one each side of the hole). Make sure of water and air tightness of all
connections. It is necessary to use a U-bend (or similar) in the condensation drainage pipe. The water drainage connections
can be made either through the holes at the bottom side of the casing or through the opening at the rear side of the casing.
5.h Connect the unit to the duct system. Make sure that all necessary accessories are used to create a functional ventilation
solution.
5.i Connect the unit electrically according to point 5.4. Check that it starts up correctly.
Fig. 5.h Fig. 5.i
Ø125mm Ø125mm

7
5.4 Electric Connections
The unit must be earthed.
The QR280ABP is wired internally from factory.
To connect the the CTRL-DSP to the mother board use a 4pole twisted-pair cable: max length 30m.
Figures below show the wiring diagram.
WARNING
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or
electrical work!
WARNING
The installation and service of the unit and complete ventilation system must be performed by an authorized installer and in
accordance with local rules and regulations.
SLAVE input
1-10V
J2 jumper for SLAVE mode
AC power supply
Heat output
(max 250Vac 5A)
Dehumidifier output
(max 250Vac 5A)
Boost momentary
switch (BST)
IAQ input
(Air Quality
i.e. SEN-CO2)
HY input
(i.e.SEN-HY)
CTRL-DSP
Inputs/commands
N°1 AC supply connector
N°3 on/off inputs (volt-free contacts), two for ambient sensors (named HY, IAQ) and one for boost momentary switch (named
BST).
N°1 1-10V analog input (named SLAVE).
N°1 jumper for SLAVE MODE selection.
N°1 4-pole connector for CTRL-DSP (RS485 plus 12Vdc supply).
Outputs
N°1 on/off output for pre-heating/post-heating (relay contact – 250Vac 5A).
N°1 on/off output for dehumidication (relay contact – 250Vac 5A).
Fig. 5.l Electrical connections on the motherboard fitted in the terminal box.
+12V
A B GND
AB
1
2
V
G
N
D

8
T R. H. T R. H. ᶯH2OᶯH2OᶯH2OᶯH2OᶯH2O
ᶯH2O
°C % °C % % kg/h % kg/h % kg/h % kg/h % kg/h % kg/h
-18 60 20 30 95,3 0,16 92,2 0,29 89,0 0,41 85,0 0,51 81,5 0,58 78
,3 0,63
-18 70 20 40 96,0 0,22 92,6 0,42 90,0 0,61 86,8 0,78 83,3 0,88 80
,1 0,96
-18 80 20 50 96,8 0,28 94,0 0,55 90,6 0,79 88,0 1,02 84,5 1,16 81
,3 1,26
-10 60 20 30 95,1 0,10 91,3 0,18 87,6 0,24 83,6 0,29 80,1 0,32 76
,9 0,35
-10 70 20 40 96,1 0,16 92,5 0,30 89,6 0,42 87,1 0,53 83,6 0,60 80
,4 0,65
-10 80 20 50 96,8 0,21 93,6 0,41 91,2 0,59 88,1 0,76 84,6 0,86 81
,4 0,94
0 50 20 30 94,6 0,01 88,8 0 84,6 0 80,1 0 76,6 0 73,4 0
0 60 20 40 95,3 0,06 90,4 0,10 86,6 0,13 83,4 0,13 79,9 0,15 76,7
0,16
0 70 20 50 95,8 0,11 92,8 0,20 89,5 0,28 86,7 0,34 83,2 0,38 80,0
0,42
10 50 20 40 94,0 0 88,8 0 84,3 0 80,3 0 76,8 0 73,6 0
10 60 20 50 93,9 0 88,9 0 84,4 0 81,2 0 77,7 0 74,5 0
10 70 20 60 94,8 0,02 90,3 0,03 85,1 0,03 80,9 0,01 77,4 0,01 74,
2 0,01
35 60 26 50 94,4 0 88,8 0 84,4 0 82,0 0 78,5 0 75,3 0
35 70 26 55 95,7 0,04 92,2 0,08 88,9 0,10 85,4 0,11 81,9 0,12 78,
7 0,13
35 80 26 60 97,4 0,09 95,0 0,18 93,1 0,26 91,6 0,33 88,1 0,37 84,
9 0,41
40 60 26 50 96,4 0,08 92,6 0,15 89,9 0,19 85,7 0,23 82,2 0,26 79,
0 0,28
40 70 26 55 97,5 0,14 94,9 0,27 92,6 0,39 91,0 0,50 87,5 0,56 84,
3 0,61
40 80 26 60 98,5 0,20 97,2 0,38 95,4 0,57 93,3 0,73 89,8 0,83 86,
6 0,90
300 m³/h
250 m³/hESTERNO INTERNO 50 m³/h 100 m³/h 150 m³/h 200 m³/h
6 COMMISSIONING
6.1 Setting Fan speed
The speed of the unit can be adjusted during installation according to required ventilation rate.
Figure 6.a below shows performance curves (for supply air and extract air) at different settings of the 0-10V signal to the motors.
Airow and consumption refer to one single motor.
Table 6.b indicates the efficiency of the heat exchanger and of the condensation produced in different climatic conditions,
to help the installer or the designer of the ventilation system to decide if to connect one or both condensation drainages.
High production of condensation is the direct consequence of a high efficiency level as well as of the humidity rate.
Table 6.c indicates the sound level at the different speed.
Fig. 6.a Intake curve according to Reg.1253/2014 (ErP).
EXTERNAL INTERNAL
Table 6.b Thermal efficiency of the heat exchanger and average production of condensation water. Preliminary data.
6.2 Before Starting the System
When the installation is nished, check that:
• Filters are mounted correctly.
• The unit is installed in accordance with the instructions.
• The unit is correctly wired.
• Eventual outdoor and exhaust air dampers and silencers are installed and that the duct system is correctly connected to the unit.
• All ducts are sufciently insulated and installed according to local rules and regulations.
• Outdoor air intake is positioned with sufcient distance to pollution sources (kitchen ventilator exhaust, central vacuum
system exhaust or similar).
• The unit is correctly set and commissioned.
0
50
100
150
200
250
300
350
400
450
500
550
600
0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300
I
II III
IV
V
Static Pressure - Pa
Airow - m3/h
A
B
C
D
E
F
G
Curve Speed
%
W
max
m3/h
max
A (min) 23 9 36
B 30 17 88
C 46 33 139
D 60 41 153
E 77 51 172
F 92 100 230
G (max) 100 167 281

9
7 OPERATION
WARNING
Make sure that specific warnings and cautions in Chapter 2 “Precautions” are carefully read, understood and applied!
Fig. 7.a Temperature probes
in LEFT orientation
Intake air from outside
Exhaust air to outside
Supply air to inside
Extract air from inside
A
B
D
C
R
EGH
J
K
Q
PN
E
G
DATE: shows the current date
MODE: shows the operation mode
SPEED: shows the selected speed
TIME: shows the time
FILTER ALARM: shows that lters need to be maintained/replaced
BOOST: shows that BOOST speed is activated
BOOST KEY: to manually activate the BOOST speed
FILTER RESET KEY: to reset the Filter Alarm
ESC key: to exit and go back to the previous menu
OK key: to enter the selected menu
to go DOWN with the menu selection
to go UP with the menu selection
to power off the ventilation unit
shows ERROR ALARM - see point 7.3 to check the type of error
this symbol shows if the bypass is active
this symbol shows that ANTI-FROST is active
this symbol shows that the IAQ input is activated, i.e.CO2
this symbol shows that the HY input is activated.
this symbol shows that NIGHT MODE is activated
this symbol shows that Heating output is activated
H
J
K
N
O
P
Q
R
S
U
X
Some operations can be selected either from the CTRL-DSP buttons or from the menu.
W
VUTS X
OML
F
I
F
I
L
M
T
V
W
Fig. 7.b CTRL-DSP
In case of RIGHT orientation, follows instructions as per point 3.3 - Fig. 3.b in order to get the temperature probes operate
correctly.
A
B
D
C
T12
T21
T11 T22
EXTRACT
SUPPLY
INTAKE
EXHAUST

10
When powered on, the CTRL-DSP displays as follows:
7.1 User Menu on CTRL-DSP
To enter the user menu press OK or ESC.
To exit the user menu press ESC or wait for about 60 seconds.
Fig. 7.c CTRL-DSP operation screen
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
Use or to select the menu.
Press OK to enter.
Mode selection allows the choice among 3V (three speed), OFF and HOLIDAY mode.
Press OK to enter.
Use or to choose the mode.
Press OK to select.
Press ESC to go back to the previous menu.
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
Mode selection
3V
3V mode (DEFAULT)
3V is ashing: press OK to select.
Once powered on, the unit runs at speed 1.
Press ESC or wait for about 60 sec to go back to the operation screen (Fig. 7.c).
In case of activation of either HY or IAQ sensor inputs (OR logic), the unit speed increases
by 15%, and the sensor related icon or is displayed. Once all on/off sensors
inputs are deactivated, the unit reverts back to selected speed.
In case the user has activated the NIGHT MODE , during nocturnal hours (from 8:00
p.m. to 8:00 a.m - xed period of time) the sensor logic described above is ignored (the
sensors have no effect and the unit runs at selected speed).
Mode selection
Holiday
HOLIDAY mode
Holiday is ashing: press OK to select.
The unit works at HOLIDAY speed.
Press ESC or wait for about 60 sec to go back to the operation screen.
Mode selection
OFF
OFF mode
OFF is ashing: press OK to select.
The fans are switched off (the power supply to the motors is interrupted).
Press ESC or wait for about 60 sec to go back to the operation screen: OFF is
displayed.

11
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
It allows to select the Boost speed.
Press OK to select.
Choice NO or YES using or .
Press OK to select.
Boost speed can be selected only if the Mode selection is 3V or HOLIDAY.
Boost function can be activated in these ways:
- In the user menu, with the Boost function
- via the BOOST button on the CTRL-DSP (Fig. 7.b - )
- Using a momentary switch connected to the BST ON/OFF (only if no dehumidier is
installed) - Fig. 5.g.
When Boost is active, the icon is displayed on the LCD and the unit runs at 100%
speed for the duration set in the “Boost duration” menu; afterwards the unit reverts to
selected speed.
Boost can be deactivated by holding BOOST button on the CTRL-DSP for 2 seconds.
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
It allows to set the duration of the boost speed.
Press OK to select.
The factory setting (DEFAULT) is 15’.
Time options are 15’ - 30’ - 45’ - 60’.
Time is ashing: use increase the time and to decrease.
Press OK to select.
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
It allows to reset the filter alarm after maintenance/replacement.
It can be selected only if the FILTER icon is displayed (Fig. 7.b - ).
Press OK to select.
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
It allows to deactivate the automatic operation of the speed increased via sensors during
nocturnal hours.
It operates from 8:00 p.m. to 8:00 a.m (xed period of time). The sensors have no effect
and the unit runs at the selected continuous speed.
OFF is ashing: use or to chance to ON.
Press OK to select.
The factory setting (DEFAULT) is OFF.
User menu
1 Mode Selection
2 Boost
3 Boost Duration
4 Reset FILTER Alarm
5 Night Mode
6 Installer menu
It allows to select the Installer menu.
Press OK to enter the Installer menu.
Press ESC to go back to the previous menu.
Enter
installer menu?
K
I

12
7.2 Installer Menu on CTRL-DSP
The Installer menu can be selected either by selecting point 6) in the User menu or by holding OK+ESC for about 7 seconds.
To exit the installer menu press ESC or wait for about 60 seconds.
It allows to select the language among English, Italiano, Nederlands, Français, Deutsch,
Espanol.
Press OK to enter.
Language is ashing: use or to choose.
Press OK to select.
The factory setting (DEFAULT) is English.
It allows to set the date and the time
Press OK to enter.
Use or to choose.
Press OK for setting and again to confirm.
Press ESC to go back to the previous menu.
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings
16 Contrast
17 Debug page
Use or to select the menu.
NOTE:
Menu 6 “Heating Threshold” displays only if Menu 5 “Heating” is set on PRE or POST.
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
It allows to select the orientation of the duct connections from and to outside (LEFT or
RIGHT - paragraph 3.3).
Press OK to enter.
Use or to choose.
Press OK for setting.
The factory setting (DEFAULT) is LEFT.

13
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
It allows to set the Bypass operation parameters
Press OK to enter.
Use or to choose “Desired Temperature”, “Tmax Free Heating”, “Tmin Free
Cooling”
For denitions see “Bypass” (paragraph 7.3)
Press OK to select.
The setting ranges are:
Desired Temperature: 15°C ÷ 30°C
Tmax Free Heating: 25°C ÷ 30°C
Tmin Free Cooling: 15°C ÷ 20°C
Use or to increase or decrease the temperature.
Press OK to select.
Press ESC to go back to the previous menu.
The factory settings (DEFAULT) are:
Desired Temperature: 23°C
Tmax Free Heating: 28°C
Tmin Free Cooling: 18°C
Installer menu
1 Language
2 Date/Time
3 Machine orientation
4 Bypass settings
5 Heating
To be selected only in case an external heating element (not supplied) is present.
Press OK to enter.
Use or to choose NO/PRE/POST.
Press OK to select.
The factory setting (DEFAULT) is NO.
NO: HEAT output (Fig. 5.g) is never activated
PRE: the heating element is intalled at “intake air side” (Fig. 7.a - ).
HEAT output (Fig. 5.g) is activated and heating icon displays on LCD when
T21 < HEATING THRESHOLD (Fig. 7.a)
POST: the heating element is intalled at “supply air side” (Fig. 7.a - ).
HEAT output (Fig. 5.g) is activated and heating icon displays on LCD when
T11 < HEATING THRESHOLD (Fig. 7.a)
Installer menu
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
This option displays only if “Heating” is set on PRE or POST.
It allows to set the heating threshold in case of PRE or POST heating.
Press OK to enter.
Use or to set the temperature.
Press OK to select.
Setting ranges:
PRE: -20°C ÷ 0°C
POST: +15°C ÷ +25°C
The factory settings (DEFAULT) are:
PRE:-10°C
POST:+20°C
Installer menu
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
To be selected only in case an external dehumidier (not supplied) is present.
Press OK to enter.
Use or to choose NO or YES.
The factory setting (DEFAULT) is NO.
The DH relay output is activated when the HY input is activated (Fig. 5.g) and the icon
is displayed.
Note: in case dehumidier is installed, the BST input (Fig. 5.g) is used as alarm output.
A
C

14
To be selected only in case an F7 lter is installed at the supply air side (Fig. 7.a)
Press OK to enter.
Use or to choose “Not installed” or “Installed”.
Press OK to select.
The factory setting (DEFAULT) is “Not Installed”.
It allows to adjust the various speeds.
Press OK to enter.
Use or to choose speed 1, speed 2, speed 3 or Holiday.
Press OK to select.
The setting ranges are:
speed 1: 10% ÷ 80%
speed 2: 20% ÷ 90%
speed 3: 60% ÷ 100%
Holiday: 10% ÷ 40%
Use or to increase or decrease the speed percentage.
Press OK to select.
Press ESC to go back to the previous menu.
The factory settings (DEFAULT) are:
speed 1: 40%
speed 2: 70%
speed 3: 100%
Holiday: 20%
Installer menu
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
Installer menu
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
It allows to adjust the balancing of the two airows.
Press OK to enter.
“Supply airow” is highlighted.
Press OK to enter.
The setting range is: -20% ÷ +20%
Use or  to adjust supply airow against extract airow
Press OK to select.
Press ESC to go back to the previous menu.
The factory settings (DEFAULT) is 0%
Installer menu
6 Heating Threshold
7 Dehumidication
8 Speed Setting
9 Airow Balancing
10 F7 lter
Installer menu
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings
It allows to set the Filter Alarm period: the system has a timer which activates the “Filter”
warning on the LCD at regular intervals.
Press OK to enter.
Use or to choose among 2-3-6 months or OFF.
Press OK to select.
The factory setting (DEFAULT) is 3 months if F7 lter is “Installed” or 6 months if F7 lter
is “Not installed”
Installer menu
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings
The system keeps trace of the actual working hours of the unit. This value cannot be
changed. Data is saved both on the motherboard and on the control panel CTRL-DSP,
to be safe in case of fault.
Press OK to enter.
Press OK or ESC to go back to the previous menu.
It allows to save the setting of the #1 (prototype) installation in the internal memory of
the CTRL-DSP to be loaded afterwards in other units.
Press OK to enter.
Use or to choose the position where to save hte setting. Up to 8 differrent settings
can be saved.
Press OK to select.
Press OK to confirm.
Press ESC to go back to the previous menu.
Installer menu
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings

15
It allows to load the saved setting on the next unit.
Press OK to enter.
Use or to choose the desiderd saved setting.
Press OK to select.
Press OK to confirm.
Press ESC to go back to the previous menu.
It allows to restore all the factory settings (DEFAULT).
Press OK to enter.
Press OK to confirm.
It allows to set the LCD contrast.
Press OK to enter.
Use or to increase or decrease the contrast.
Press OK to confirm.
It shows the internal functional parameters of the unit.
Press OK to enter.
Press ESC to go back to the previous menu.
Installer menu
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings
Installer menu
11 Filter Alarm interval
12 Working Hours Counter
13 Save settings
14 Load settings
15 Restore Default Settings
Installer menu
16 Contrast
17 Debug page
Installer menu
16 Contrast
17 Debug page
7.3 Additional functionalities
SLAVE MODE
In case the SLAVE jumper (Fig. 5.g - JP2) is short-circuited before powering the unit, the unit works in SLAVE MODE; the
operating speed is determined by the 1-10V signal received at the SLAVE input. All the operating logics described in the Mode
selection are ignored (paragraph 7.1).
BYPASS
The QR280ABP is equipped with a physical bypass which allows to mitigate the heat exchange when the indoor and outdoor
temperature combinations are such that the heat exchange is not recommended. In this case the Bypass icon is activated
on the LCD.
The parameters “Desired Temperature”, “Tmax Free Heating”, “Tmin Free Cooling” (Installer Menu 4) are to be meant as follows:
“Desired Temperature” is the ambient temperature desired by the user
“Tmax Free Heating” is the maximum outside temperature allowed for free heating operation
“Tmin Free Cooling” is the minimum outside temperature allowed for free cooling operation
FAULT HANDLING
Code error description (Fig. 7.b - )
E000 no RS485 connection
E001 no rotation of the exhaust air fan (Fig. 8.a - )
E002 no rotation of the intake air fan (Fig. 8.a - )
E003 thermistor T11 broken/disconnected (Fig. 7.a)
E004 thermistor T12 broken/disconnected (Fig. 7.a)
E005 thermistor T21 broken/disconnected (Fig. 7.a)
E006 thermistor T22 broken/disconnected (Fig. 7.a)
E007 dehumidier alarm (BST INPUT)
E008 CTRL-DSP internal error
NOTE: the controller board veries the presence of CTRL-DSP periodically; if CTRL-DSP is absent (or faulty), the unit works in 3V
mode at speed 1 (DEFAULT condition).
ANTI-FROST
Intake Fan speed is reduced during very cold weather in order to prevent ice inside the unit which could damage the heat
exchanger.
In this case the ANTI-FROST icon is activated on the LCD.
R
7
6

16
Maintenance can be carried out by the user.
Service must be performed only by an authorized installer and in accordance with local rules and regulations.
Questions regarding installation, use, maintenance and service of the unit should be answered by your installer or place of
purchase!
8 MAINTENANCE AND SERVICE
WARNING
Make sure that specific warnings and cautions in Chapter 2 “Precautions” are carefully read, understood and applied!
8.1 Components list
Fig. 8.a Internal components
1
2
3
4
5
6
7
8
G4 FILTER
HEAT EXCHANGER
CONDENSATION DRAINS
THERMISTOR
FAN, INTAKE AIR
FAN, EXHAUST AIR
ELECTRICAL CONNECTION CARD
CABLE ENTRY
3
8
2
5
4
6
1
7
8.2 Description of Components
Fans
The fans have external rotor motors of EC type which can be steplessly controlled individually between 10–100%. The motor
bearings are life time lubricated and maintenance free. It is possible to easily disconnect and replace the fans if necessary.
Filters
The lters are of lter quality G4 for both the supply air and extract air lter. The lters need to be cleaned regularly (and replaced
when polluted) during maintenance. New sets of lters can be acquired from your installer or wholesaler.
Heat exchanger
The unit is equipped with a highly efcient, counter-ow plate heat exchanger. Supply air temperature is therefore normally
maintained without adding additional heat. The heat exchanger is removable for cleaning and maintenance during service.
Condensation drainage
Depending on the relative humidity in the extract air, condensation may occur on the cold surfaces of the heat exchanger, on one
side in winter time, on the other side in summer time (table 6.b).
The condensate water is led out through drainage pipe.
Thermistors
Temperature probes to implement temperature dependent functions.

17
8.3 Maintenance
• Keep the unit surface free from dust.
• Clean the filters with a vacuum cleaner following the below illustrations (fig.8 b-c-d-e-f-g) when the FILTER signal is displayed
on LCD. Their maintenance may differ per situation depending on the internal and external environmental conditions.
• Press FILTER button (Fig.7.b - ) to reset the Filter Alarm.
• Filters must be replaced every year.
WARNING
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or
electrical work!
L
Fig. 8.eFig. 8.d
Fig. 8.cFig. 8.b
Fig. 8.gFig. 8.f

18
• Keep the unit surface free from dust.
• Clean the filters with a vacuum cleaner following the following illustrations (fig.8 h-i-j-k-l-m) when the FILTER signal is displayed
on LCD. Their maintenance may differ per situation depending on the internal and external environmental conditions. Press
FILTER button (Fig.7.b - ) to reset the Filter Alarm. Filters must be replaced every year.
• Clean the heat exchanger every year with a vacuum cleaner. This may differ per situation depending on internal and external
environmental conditions and on frequency of filter cleaning (Fig. 8 h-i-j-n-o-p).
• Clean the fans every year with a vacuum cleaner. This may differ per situation depending on internal and external environmental
conditions and on frequency of filter cleaning. Do not move the balance clips of the fan (fig.8 h-i-j-f-l-m).
8.4 Service
WARNING
Make sure that the mains supply to the unit is disconnected before performing any installation, service, maintenance or
electrical work!
WARNING
The installation and service of the unit and complete ventilation system must be performed by an authorized installer and in
accordance with local rules and regulations.
L
Fig. 8.mFig. 8.k
Fig. 8.iFig. 8.h
Fig. 8.n Fig. 8.o
Fig. 8.l
Fig. 8.j
Fig. 8.p

19
Fig. 8.q
8.5 Trouble shooting
Fans do not start
1. Check that main supply gets to the unit.
2. Check that all connections are working (all connections in terminal box and fast couplings of intake and exhaust air fans).
Reduced airow
1. Check setting of fan speed on the CTRL-DSP (controller supplied)
2. Check filters. Change of filters required?
3. Check diffusers. Re-setting or cleaning of grilles and diffusers required?
4. Check fans and heat exchange block. Cleaning required?
5. Check if air intake and exhaust have been clogged.
6. Check ducting system for damage and/or dirt accumulation.
7. Check if Anti-frost icon is displayed on LCD.
Fan noise/vibrations
1. Clean fan impellers. Cleaning required?
2. Check that the fans are firmly in place within the unit.
Excessive air noise
1. Check setting of fan speed on the CTRL-DSP (controller supplied).
2. Check grilles and diffusers. Re-setting or cleaning of grilles and diffusers required?
Gurgling noise
1. Drainage parts have not been installed correctly.
2. Drain connection below the unit has a too low water level, fill it up with water.
Unpleasant smell
1. Drainage parts have not been installed correctly.
2. Drain connection below the unit has a too low water level, fill it up with water.
3. Check filters. Change of filters required?
4. Check ducting system and grilles and diffusers. Cleaning required?
Water leakage near the unit
1. Drain connections and elbows/plugs have not been installed correctly. Sealing necessary?
2. Drain connections and elbows/plugs are dirty. Cleaning necessary?
Fig. 8.r Fig. 8.s Fig. 8.t

20
Information on disposal of units at the end of life.
This product complies with EU Directive 2002/96/EC.
The symbol of the crossed-out dustbin indicates that this product must be collected separately from other waste
at the end of its life. The user must, therefore, dispose of the product in question at suitable electronic and
electro-technical waste disposal collection centres, or else send the product back to the retailer when purchasing
a new, equivalent type device.
Separate collection of decommissioned equipment for recycling, treatment and environmentally compatible
disposal helps to prevent negative effects on the environment and on health and promotes the recycling of the
materials that make up the equipment.
Improper disposal of the product by the user may result in administrative sanctions as provided by law.
DISPOSAL AND RECYCLING