Aereco DXR 230 EXCELLENCE Technical specifications

INSTALLATION AND MAINTENANCE INSTRUCTION (ENGLISH VERSION)
dx system
DXR 230 EXCELLENCE
Room-by-room demand controlled heat recovery ventilation for ceiling installation
TF6089_B - 06.2017
TF6089_B Aereco S.A.

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TF6089_B Aereco S.A.
1.Introduction 3
1.1.Warnings 3
1.2.Pictograms 3
2.Description 4
2.1.General information 4
2.2.Construction / Dimensions 6
2.3.DXR Assembling 6
3.Installation 7
3.1.Location of the installation 7
3.2.DXR Unit and DXHub 7
3.2.1.Location 7
3.2.2.Accessibility 8
3.2.3.Fixing of the DXR Unit and of the DXHub 8
3.2.4.Duct connections to the DXR Unit and to the DXHub 10
3.2.5.Duct connections to the DX Hub 6 11
3.2.6.Evacuation of condensates 11
3.3.Exhaust compensation valve (MCP 125) 12
3.4.Defrosting 13
3.5.sensors 14
3.5.1.Presence sensors (DXR S-Pre) 14
3.5.2.CO2sensors (DXR S-CO2) 14
3.6.DXR user’s interface 15
3.7.Special care for the ductwork 16
3.8.Fire protection 16
4.Electrical connections 17
4.1.Electrical connection on the DXR Unit 18
4.2.Electrical connection of the defrosting 19
4.3.Electrical connection of the condensate pump (optional) 19
5.Starting and settings of the DXR 20
6.Maintenance 20
6.1.Regular maintenance of the installation 20
6.2.Fuse 20
6.3.Replacement of supply cable 20
6.4.Filters 21
7.Troubleshooting 22
8.Acceptance of works 23
8.1.Visual inspection 23
8.2.Measurements 23
9.Specific recommendations for airtightness and insulation of the installation 24
9.1.Insulation of the installation 25
9.2.Airtightness of the installation 25
10.Supply and exhaust units 27
10.1.Supply units 28
10.2.Exhaust units 28
10.3.Fresh air inlet and exhaust air outlet 29
11.Environmental concerns 29
12.Warranty 29
13.Conformity and standard 29
14.Characteristics 30

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1.1. WARNINGS
PLEASE READ THE FOLLOWING INSTRUCTIONS BEFORE THE
INSTALLATION:
In case of non-compliance with advice and warnings contained
in this manual, the manufacturer can not be considered
responsible for damages to persons or property.
The manual describes how to install, use and maintain correctly
the appliance. The only way to ensure the eciency and longevity
of the product is to comply with these requirements.
Do not use this appliance for any applications for which it is not
intended.
The system must be installed by experienced contractors, trained
in the specificities of the process and having the necessary skills
in aeraulics and electricity.
The use of gloves to carry on the installation is recommended.
After unpacking the appliance, make sure it is not damaged. Any
functional default must be reported to your reseller.
The use of an electrical appliance implies the following
fundamental rules:
· Do not touch the appliance with a wet or damp body (hands,
feet, etc.).
· This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance
by a person responsible for their safety. To avoid any risk, do not
allow them to play with the appliance.
· The electrical installation and electrical connections must
be carried out by a qualified technician according to the
manufacturer’s instructions and in compliance with the
characteristics listed on the nameplate of the unit.
· Before carrying out any operation on the appliance, unplug or
disconnect it from the power supply, and ensure it can not be
accidentally restored.
· Power cable modification or replacement must only be carried
out by qualified personnel or by After-sales Service in order to
avoid any accident.
· Children being supervised not to play with appliance.
1.2. PICTOGRAMS
Warnings
Risks of:
· Appliance damage
· Bad eciency and longevity of the appliance.
Risk of electric shock.
Electrical component: ground.
1. INTRODUCTION
This document presents the installation and maintenance schemes for the whole system.

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Specific working
of the DXR Excellence version
The Excellence version corresponds to the
best HRV solution in terms of indoor air
quality and energy savings. In this version,
the DXSystem adapts airflows room-by-room
based on specific needs, while balancing
supply and exhaust. A distribution box (DX
Hub 2), connected to CO2or presence
sensors 5located in all the dierent main
rooms, adjusts supply airflows through
dampers. The DX Hub is equipped with a
compensation supply valve to ensure high
airflow on the exhaust side. The exhaust
airflows are controlled by humidity sensors or
presence detectors or other activators in the
exhaust units.
2. DESCRIPTION
2.1. GENERAL INFORMATION
The DXSystem is a range of smart heat recovery ventilation systems that continually supply pollen-free and dust-free preheated fresh air to living areas,
ensuring a comfortable feel-good climate.
The DXR is a heat recovery unit with demand-controlled airflows for horizontal installation (in the false ceiling) in the apartment or in the house, from 2to
5 main rooms, and from 1 to 5 technical rooms (kitchen, bathroom, others wet rooms). The apartment is limited to 2 floors (1 ground floor and 1 floor
maximum), and has a maximum surface of 210m². This HRVsystem can also be used in oces, hostels, etc., if the required airflow is in accordance
with the one oered by the system.
General working of the DXSystem
The DXSystem is comprised of a heat recovery unit (DXR Unit) connected to exhaust units which controls the supplied airflows. The counter-flow heat
exchanger, integrated into the main unit, ensures the recovery and transfer most of the energy from the exhaust air to the supply air, thus limiting the
energy required to heat the fresh air.
Airflows are automatically controlled according to the needs of each or many rooms of the dwelling: for the supply air 3in the bedrooms and the living
room, and for the exhaust air 6from the kitchen, bathroom and WC. On the supply side, depending on the DXSystem version installed (Excellence or
Excellence version), one or many sensors 5can adjust the airflow to all main rooms based on the CO2, proportionally to the measured level of pollutant
or based on the presence detection. On the exhaust side, the BXC units automatically adjust the airflow, according to parameters read by various sensors:
humidity in bathroom, presence in WC, humidity and manual boost in the kitchen. Versions with switch, presence, remote, CO2or VOC sensors can also
be used for exhaust units.
At all times, the total supply and exhaust airflows are measured and balanced by means of one controlled compensation valves 8(for Excellence version)
or by an additional one, integrated in the DXHub5 or DXHub6 2(for Excellence version) which can be located in the living room, in the kitchen or in
a corridor. Compensation valves are linked to dedicated compensation exhaust 7or supply units 4. For example, when the main rooms are occupied,
the presence or CO2sensors that are located in these rooms send the information to the system to adapt the airflow according to the demand. To reach
the required airflow at the supply, the exhaust compensation valve is open at a certain level depending on the information sent by the sensors in the main
room. This leads to a change of supply airflow (supply airflow is always balanced with the exhaust one).
When the outside temperature is mild enough, the bypass, located in the DXR Unit 1, automatically allows to the supply air to be filtered and then to be
supplied in the dwelling without going through the heat exchanger. it can also be used in free-cooling mode to provide night cooling in summer.
CO2 detection
Based on the level of CO2in the room, a
consequence of people occupancy, CO2sensors
are a really good indicators to modulate the
supply airflows. Allows reliable measurement
of the concentrations of CO2in a zone. The
analysis principle consists in measuring the
absorption of infrared light in order to determine
the concentration in a room. This method gives
a very accurate response and is not aected by
any other pollution (humidity, dust, etc.).
Presence detection
The presence sensors located in the main
rooms (at least 1 sensor in the main rooms)
send the information to the system (presence
detected or not) with a timer that depends on
the period through luminosity measurement
(day or night). This timer keeps the detection
at the maximum level during 20 or 45minutes
after the last detection, to optimize the quality
of detection. Timer day = 20 min ; Timer
night= 45min. An average of the detections
in the rooms is calculated to define the total
level of need / airflow for the supply. If this
level is higher than the current level of exhaust
airflow, then the exhaust compensation valve is
activated to increase the supply airflow as well.

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TF6089_B Aereco S.A.
1
3
33
3
9
45
10
11
5
5
5
2
6
87
6
Typical apartment equipped with the DXR Excellence system
DXR Unit
1DX Hub 5 DX Hub 6 2
Distribution box for demand controlled supply airflows
BXC b
7
Exhaust unit for balance
Interface
10
Heat recovery unit with balanced demand controlled airflows
Preheater
9
Galvanised steel body
with built-in resistance
MCP 125
8
Exhaust compensation valve
S-CO2
5
CO2 sensor
SDC 100
3
Supply unit
SDC 125
(for Excellence version only)
4
Supply unit for balance
S-PRE
Presence sensor
Air intake
and outlet grilles
10
BXC
6
Exhaust units (various sensors)
RJ 12 - RJ 45 cables
Acoustic attenuation
11 Accessories for
condensate evacuation
List of components

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Dimensions of DXR Unit (mm)
2.2. CONSTRUCTION / DIMENSIONS
DXR Unit 230m3/h– Heat recovery unit
140
1160
124
158
246
258
1260
140
328
328
714
650
DN160
DN160
316
125
See the characteristics of the DXR Unit system on page 31
· Envelope in galvanised steel, painted in white
· 2 low energy consumption fans driven by EC electronic motors
(supply air and exhaust air).
· F7 anti pollen filter for the fresh air.
· Supply and return G4 filters to protect fans and the exchanger.
· Continously checking of filter clogging, and warning for filter change.
· High eciency heat exchanger with aluminium plates, washable.
· Intelligent electronic control unit of the heat recovery, with control
interface.
· Integrated bypass and free cooling automatically controlled.
· Flexible duct to drain condensate.
118
151 622
577
31,5
21,5
DN 100DN 125DN 100
DN 160
433
200
DN 100
100
100
468 494 520
546 DN 13
DN 160
151
100
DN 158
100
126
200
773
750
685
105
129
DN 75
DN 158
114
340
DN 13
695
685
254
280 124
78 134
636
636
755
Dimensions of DXHub6 (mm)
DXHub – Distribution box for demand controlled supply airflows
· Envelope in galvanised steel.
· Dampers for supply airflows, driven by sensors (Presence or CO2)
for each room.
· Damper for balance of the airflows
· Ducts DN100 compatibility (DXHub5)
· Ducts DN75 compatibility (DXHub6)
The distribution box (DXHub) coupled to the heat recovery unit
(DXR Unit) enables the balance between supply and exhaust
airflows.
Assembling of the DXR spigots
2.3. DXR ASSEMBLING
When delivered, the DXR unit is furnished with 4 spigots with 4 screws each.
Those 4 spigots have to be screwed and sealed to the DXR unit as indicated on
the scheme.
The seal can be made thanks to silicone seal.
Following the seal applied on the DXR Unit, a drying time has
to be taken into account before the operability of the DXR.
Dimensions of DXHub5 (mm)

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3. INSTALLATION
3.1. LOCATION OF THE INSTALLATION
The unit must be installed into the heated space, in parts of the dwelling relatively
insensitive to noise, not in the unheated space (attic, etc.). Upper and lower temperature
limits for the main unit are 5°C and 50°C
Ductwork should be installed in the heated space. If not, they must be insulated with
50mm minimum of glass wool (or equivalent). The non compliance with these conditions
leads to the degradation of the heat recovery performance.
Features and uses
DXR Unit and DXHub CO2sensor Exhaust compensation valve
Max. altitude of the product installation 2000 m 2000 m 2000 m
Temperature range of the installation place 5°C – 50°C 5°C – 40°C 5°C – 40°C
Humidity range of the installation place 5% - 95% Max. 80% at 31°C, linear
decrease up to 50% at 40°C. 5% - 95%
3.2. DXR UNIT AND DXHUB
The caps on the DXR Unit and the DXHub must stay during the entire duration of the
work, in order to keep dust and pollution from getting into the boxes.
3.2.1. LOCATION
Before the installation, be sure of the solidity of the ceiling where you plan to install DXR
Unit and DXHub.
· Weight of DXR Unit = 46 kg
· Weight of DXHub5 = 11 kg
· Weight of DXHub6 = 18 kg
The DXR Unit must be attached so that the gap between the ceiling and the top of the unit is
at least 10 mm, and positioned exactly horizontally (max 1° tolerance).
The non compliance to this requirement may lead to serious problems of condensate
evacuation.
Positioning of the DXR Unit
D > 10 mm
ceiling ceiling
When mounting the DXHub, the top must be closed, otherwise the Hub may warp.

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Recommendation for access hatches
D > 15cm
D > 15cm
D > 15cm
D > 15cm
The electrical connections must be easily accessible to be able to disconnect the DXRUnit from
the supply before any operation on the appliance. The circuit-breaker must be easily identified and
accessible.
Recommendation: leave an extra 15cm space around the product to facilitate handling. An extra
upper or lower space of 2 cm is also recommanded.
3.2.3. FIXING OF THE DXR UNIT AND OF THE DXHUB
The DXR Unit and the DXHub each have 4 brackets for direct fixing to the ceiling, above the false
ceiling. Using studs or cables to attach the box facilitates precise observance of the positioning
requirements.
The DXHub can be either installed vertically or horizontally.
The auto-blocking fixation system proposed by Aereco can only be used with a concrete ceiling.
Example of studs
Example of flexible type attachment with auto-
blocking system
Quick suspension with auto-blocking system
proposed by Aereco
3.2.2. ACCESSIBILITY
The DXR Unit, as well as the distribution box, must be positioned so that it is accessible for
the maintenance and in case of access or removal from the false ceiling.
For easy maintenance, leave an access hatch in the false ceiling in order, to have ready
access to the hatches of the filters, located under the DXR Unit. The inspection hatch must also
be dimensioned so that the DXR Unit can be removed from the false ceiling.

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Quick suspension with auto-blocking system proposed by Aereco
1
8 9
2 3 4 5
6 7
To pull up the DXR: pull the cable downwards To bring down the DXR: push the top part of the fixation
Installation of the quick suspension system
DXR Unit
/ DXHub
DXR Unit
/ DXHub
DXR Unit
/ DXHub
DXR Unit
/ DXHub

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3.2.4. DUCT CONNECTIONS TO THE DXR UNIT
AND TO THE DXHUB
The connections to the DXR Unit are all in Ø160 mm. Labels on the unit identify the 4 ducts to be
connected (fresh air, used air, supply air, exhaust air). Outdoor fresh air and used air ducts must
be insulated.
Be careful to respect top and bottom of the installation.
Fresh air
(outdoor)
Used air
(outdoor)
Fresh air supply
(indoor)
Exhaust air
(indoor)
Labels on the unit identify the 4 ducts to be connected (fresh air, used air, supply air, exhaust air).
Either on the DX Hub 5 or on the DX Hub 6, it is possible to choose one inlet among a
choice of 2 (DX Hub 5) or 3 (DX Hub 6).
Firstly the foam has to be cuttered then the metal part can be swinged in order to remove
it. Then as the assembling part of the DXR's spigot, the inlet spigot has to be screwed
and sealed to the DX Hub.
The seal can be made thanks to silicone seal.
1
11
1
2
2
2
3
1 or 3 4
5
1Ø100 mm or Ø75mm
2Ø100 mm or Ø125 mm
3Ø125 mm
4Ø160 mm
5Ø160 + 50mm insulation
SDC100
SDC
125
SDC100
SDC100 SDC100
BXC
BXC
BXC
compensation
to exhaust air outlet
to fresh air inlet
Supply: rigid or semi-rigid duct
+ flexible connection to the unit (1m max)
(avoid noise in the room)
Exhaust air: rigid (avoid pressure drop)
or semi-rigid duct
Air intake and air outlet: insulated rigid
duct (avoid pressure drop and condensation)
Duct diameters and recommendation concerning the type of ducts

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· If rigid ducts are used, the connection between the DXR Unit and the duct must be made
using a flexible sleeve (Ø160 mm), in order to avoid transmitting vibrations from the fan to
the duct.
-Make sure that the flexible sleeve is not twisted or wrinkled and that it is correctly aligned
but not completely taut between the unit and the ductwork. To achieve this, it is essential to
have a constant section on either side of the sleeve.
-To perform its function of decoupling between the components, the sleeve can be attached
by means of flat metallic clamping rings. It will then be necessary to make sure of the
airtightness of the assembly.
· If flexible ducts are used, the connection can be carried on directly to the unit, making sure
that the connection is secure and tight with flat clamping rings and adhesive.
In order to fully guarantee the acoustic quality of the installation, it is necessary to
attenuate airborne noise from the main unit by:
·20 dB at 500 Hz at supply
·15 dB at 500 Hz at exhaust
This can be done using a silencer or an equivalent length of acoustic duct between the
DXR Unit and the DXHub.
3.2.5. DUCT CONNECTION TO THE DX HUB 6
To connect semi-rigid ducts to the DX Hub 6, it is necessary to add a foam joint (supplied
with the DX Hub 6) on the 3rd groove.
3.2.6. EVACUATION OF CONDENSATES
Condensates must be evacuated to wastewater. This evacuation must be insulated if installed
outside the heated volume (risk of freezing). It can be done by gravity with two siphons at the low
point, or using a lift pump like the one in the air conditioning unit.
Using a siphon
· Connect the evacuation pipe to wastewater.
· Before first starting up, fill siphons with water.
· Siphons must always be filled with water.
A slope of about 3° is recommended for the good evacuation of condensates. In any case,
manufacturer instructions must be followed. The evacuation pipe connection is in Ø16 mm.
The condensate ducts must not be higher than the DXR evacuation outlets.
Using a lift pump
· Connect the condensate pump to the DXR thanks to the metal pieces supplied in the condensate
kit.
· Connect the pipes using the metal sheet.
· A vertical height of 8 meters must not exceed between the lift pump and the evacuation duct.
Note: The lift pump proposed by Aereco was tested and validated specially for the DXSystem.
Using another lift pump can lead to serious problems of functioning and degrade the security of the
system. The lift pump connection is in Ø6 mm ID.
All the connections must be watertight.
Connection with flexible sleeve
Evacuation of condensates with two siphons
Evacuation of condensates with a lift pump
(specific to Aereco)

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3.3. EXHAUST COMPENSATION VALVE (MCP 125)
The valve is located in the final duct that serves the exhaust compensation unit (in the kitchen). It is
therefore in Ø125 mm. This product is specific to Aereco system.
The valve can be positioned in any direction, the maximum length being 232 mm. However,
attention must be paid to the direction of the airflow in the valve: an arrow marked on the
valve indicates the correct position.
Check the good quality of the pressure pipe before carrying the installation. The pressure
pipe must not be crushed.
The valve must be placed in the duct, at a minimum distance equivalent to 3 diameters (38cm for a
125 mm duct) from any fittings, and from the compensation unit.
In addition, there must be an inspection hatch to access the valve for maintenance.
232
205
Ø125 mm
Exhaust compensation valve
Positioning of the exhaust compensation valve
with access hatch
D > 38cm D > 38cm

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3.4. DEFROSTING
The defrosting is located in the duct that serves the fresh air inlet, upstream from the DXR Unit. It is
therefore in Ø160 mm and insulated. A length of 1 m must be respected between the DXR Unit
and the defrosting. The fresh air supply air duct must be manufactured from non-flammable
materials (A1 Class according to EN 13501-1).
The air must travel in the direction shown by the arrows marked on the defrosting device.
325
250
Ø160 mm
View of the defrosting
Positioning of the defrosting compared to the
DXR Unit
L > 1m
The defrosting must be located at a distance of at least twice the connection diameter from a duct
bend or external grille, and at 1m from the DXR Unit. We recommend tilting the duct slightly towards
the exterior in order to keep rain water from getting into the defrosting.
The installation must allow access to the defrosting for a manual reset, or for maintenance
(access hatch).
Manual reset of the defrosting:
1. Unscrew the black cap 2. Push the red button and screw back the
black cap on
The defrosting must not be installed with the
electrical device at the bottom.
Note:
· The DXR Unit has been specially designed to work with the defrosting provided by Aereco (defrost
strategy specific to the DXSystem, and adapted diameter). Besides, it has been CEM certified with
the DXR Unit.
· Using another defrosting can lead to serious problems of functioning and degrade the security of
the system.
Anti-frost without pre-heating resistance
· When using the DXR Unit without the additional resistance pre-heating, the anti-frost strategy is
based on the supply airflow regulation. The supply air fan is switched o and the extract air fan
remains active, in order to warm up the heat exchanger.
Be careful, very often, this type of strategy does not comply with an open fireplace. Make
sure that you comply with the standard in force in the country of installation.
When the optional defrosting device is used, this anti-frost strategy is not active anymore.

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3.5. SENSORS
The DXR Excellence version is compatible with two types of sensors for the management of supply
airflow: presence detection or CO2.
We recommend to use one sensor per main room (living room and bedroom).
- Presence sensors and CO2sensors can be mixed together.
- A maximum of 5 sensors can be connected to the system.
- The connection to the system is made through RJ12 wires. Only the specific ones supplied by
Aereco can be used.
Presence sensor
Choice of sensor number (on the elec-tronic card
of the sensor)
TF6372_C
B
ACD
E
F
0
Setting of the sensors for the DXHub6
3.5.1. PRESENCE SENSORS (DXR S-PRE)
The DXR S-PRE presence detector uses infrared radiation to measure movements made in a room.
The detector includes a LED indicator that displays the detections in order to inform the users. When
luminosity in the room is very low, the LED is automatically switched o.
The S-PRE sensor must be installed on the ceiling at a place it can easily detect the presence.
3.5.2. CO2SENSORS (DXR S-CO2)
C02 Sensors must be installed on the wall, at a height of at least 1.5 from the floor, or at the
ceiling, and must respect the following recommendations:
· keep the sensor away from any direct solar radiation,
· keep the sensor away from draughts (door, window, supply, etc.),
· avoid placing the sensor in dead zones (behind curtains, furniture, etc.),
· keep the sensor away from heat sources and from occupants,
· if the sensor is located at the ceiling, keep it away from any supply unit.
5 indexation positions are allowed for every sensor (presence or CO2): position 1 to position 5
included.
Important: Every sensor must have a specific identification number (1 to 5) so that the
system can identify them.
Example:
· Presence sensor bedroom A = 1
· Presence sensor bedroom B = 2
· Presence sensor bedroom C = 3
· CO2sensor in living room = 4
Note: the sensors are delivered in position 0. They must be manipulated with extreme care.
CO2sensor
Setting of the sensors DXR S-PRE and DXR S-CO2
For DXHub6 only :
The damper n°6 corresponds to the compensation damper. It is necessary to
install its supply unit in a corridor or in the same room than the supply unit n°5.

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3.6. DXR USER’S INTERFACE
The colour touch screen interface must be installed in an unobstructed place and located
at eye levelof the user. This height can be dierent, according to the occupant of the
dwelling, and if necessary take into account access to disabled person. In all cases, it is
essential to comply with the standard in force in the country of installation.
Touch screen IC
Opening of the user interface
1 2 3

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3.7. SPECIAL CARE FOR THE DUCTWORK
Any duct that is outdoors or in an unheated volume must be insulated with 50 mm of
glass wool or equivalent. In countries where the temperature can go under -10°C, the
recommendation of insulation is at least 100 mm of glass wool.
Mounting of ducts:
· The ductwork must be airtight (see recommendations for an airtight ductwork in page 24).
· Take care not to use a material that is too fragile or too flexible.
· The inner surfaces of all ducts must be as smooth as possible.
· Avoid having too many bends (make them gradual, with a large curvature).
· It is recommended to use flexible (about 50cm) to connect the compensation valve to the supply
units, to limitate risks of noise in the main rooms, in that case:
-Avoid slopes (flexible ducts must be securely attached).
-Tauten the straight parts so that the duct is smooth and straight (when using flexible or semi
flexible ducts).
-If the flexible duct is longer than necessary, it must be cut rather than pushing the surplus
into the false ceiling.
-Do not crush the duct or squeeze it down to force it through a narrow passage.
· The interior of the ductwork must be protected during the entire duration of the work (from dust,
pollutants, etc.), using caps, plastic bags, or tape.
The installation of supply and exhaust units, and fresh air inlet and exhaust air outlet
must be carried out in order to obtain a system that performs well in terms of both
aeraulics and thermal and acoustic comfort (see recommendations for the installation of
the units in page 24).
3.8. FIRE PROTECTION
The installation must comply with the fire protection standards in force in the country concerned.

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TF6089_B Aereco S.A.
4. ELECTRICAL CONNECTIONS
Disconnect the electrical supply before any operations and ensure that the unit cannot be
started accidentally.
Only cables provided by Aereco must be used to carry on the DXR installation. If using
dierent cables, Aereco won’t be able to guarantee the good functioning of the appliance.
The installation must be carried out by a professional in compliance with applicable regulations
in force in the country of installation. Each product or component used in the installation must also
comply with standards in force in the country.
B
B
B
A
C
E
F
G
230 VAC
230 VAC
230 VAC
D
AInterface
BCO2or presence sensors
CDXR Unit
DDXHub5 or DXHub6
EDefrosting
FLift pump
GCompensation valve at exhaust
RJ 45
RJ 12 (specific to Aereco)
Defrosting control: 0.5 mm²
Input pump alarm: 0.5 mm²
Supply (230 V): 1.5 mm².
Note: The DXHub allows also 5 RJ12 connections where sensors (or user’s interface) can be
connected instead of connecting sensors to the DXR Unit itself. However, the maximal RJ12 cable
length between the DXHub and the sensors must not exceed the length calculated thanks to the
equation below :
· LSH = 30 - (nSH * LUH)
· With LSH : RJ12 cable length between the sensors and the DXHub
· nSH : number of sensors directly connected on the DXHub
· LUH : RJ45 cable length between the DXRUnit and the DXHub.
Note: RJ12 and RJ45 cables provide both supply and connections. RJ12 cables can be connected
anywhere (DXR Unit or/and DXHub), as long as the maximal length of the cable is respected.
RJ12 maximal length: RJ45 maximal length:
DXR Unit to the interface 10 m max. DXR Unit to the exhaust compensation valve 10 m max.
DXR Unit or DXHub to sensors 30 m max. DXR Unit to DXHub 10 m max.
Do not connect RJ45 cables to an Ethernet or a phone network. Only external devices
provided by Aereco must be connected to RJ plugging.
The DXR is not designed to be connected to smart home system; settings and data
display are realised only through the Aereco touch screen interface specific interfaces
(touch screen or basic one).

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If using crimping tool to fit the plug to the cable, be careful of the position of the wire at both cable
end: the wires must have the same order at both end as shown on the picture below.
RJ right plugging
4.1. ELECTRICAL CONNECTION ON THE DXR UNIT
1Sensor / Interface (RJ 12)
2DXHub (RJ 45)
3Pump Alarm 9V (optional)
4Alarm 9V (optional)
5Defrosting control 9V (optional)
6Compensation exhaust valve (RJ 45)
79 VDC OUTPUT
8230VAC, 50/60Hz, 180W max
9Fuse : 250V T1.6A / 250V
10 ON / OFF
DXR Unit
To circuit
breaker 2A
N
GND
L
1
2
3
4
5
+
-
+
-
7
6
8
230VAC 1.5mm²
230VAC 1.5mm²
230VAC 1.5mm²
9
10
The main power supply is on the DXR Unit.
Sensors, user’s interface, DXHub and the exhaust compensation valve are accessed from
communication bus.
Optional exhaust units can be connected via a 2 wire cable having a cross sectional area of
at least 0.75 mm² and a maximal length of 25 meters.
Details of DXR Unit connection
Only RJ45 which the following specifications can used:
24 AWG; CAT5E; straight-thru

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TF6089_B Aereco S.A.
4.2. ELECTRICAL CONNECTION OF THE DEFROSTING
N - P
1 200 W
L1 - P
1 200 W
A1 +
A2 -
Defrosting unit
+
-
230 VAC 3 x 1.5 mm²
To circuit breaker 10 A
0.5 mm²
0.5 mm²
DXR Unit
Details of defrosting connections
The defrosting has an individual supply in 230 VAC, 50/60 Hz, single-phase via a flexible cable
having a cross-sectional area of at least 1.5 mm². The control is connected via a 2 wire cable having
a cross sectional area of at least 0.5 mm² and a maximal length of 10 meters.
The electrical connection must be made by a professional and comply with the standards in force in
the country of installation.
Plan a contact separation device having an opening distance of at least 3 mm on each pole.
Note: there is no alarm in the defrosting provided by Aereco.
Details of condensate pump connections
4.3. ELECTRICAL CONNECTION OF THE CONDENSATE PUMP (OPTIONAL)
Dry contact alarm connections.
The alarm is connected via a 2 wire cable having a cross sectional area of at least 0.5 mm² and a
maximal length of 10 meters.
DXR Unit
+
-
230VAC 3x1.5mm²
To circuit breaker 2A
L (Brown), N(Blue) 230V 0.5mm²
Grey, black
L
N
GND
230VAC blue 1.5mm²
230VAC GND 1.5mm²
230VAC Brown 1.5mm²

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TF6089_B Aereco S.A.
5. STARTING AND SETTINGS OF THE DXR
Please refer to DXR Interface Use and settings instructions notice.
6. MAINTENANCE
For every operation of maintenance, even replacement of filters, disconnect the electrical
supply before any operation and ensure that the unit cannot be started accidentally.
Maintenance of ventilation installation helps to avoid:
· microbial contamination of the installations, with consequences on comfort and health (the impact
of such contamination is aggravated in an air supply);
· loss of aeraulic performance through too high pressure drops, increase of fan consumption;
· noise (from a too high air speed, and from high speed rotation of fan due to clogged filters).
6.1. REGULAR MAINTENANCE OF THE INSTALLATION
Frequency Maintenance
when the alarm indicates it Filters: replace the filters when the alarm indicates it, then initialize the new filters. It is essential to replace all of the filters at
the same time.
once a year
Fresh air inlet and exhaust air outlet: check the unobstructed passage of air (no dead leaves, no snow).
Supply and exhaust units: cleaning as recommended by the manufacturer (this part can be done by the occupant).
Evacuation of condensates: check that the system is not obstructed by impurities.
WARNING: Plan replacement of the condensates evacuation pump according to the life span announced by the supplier.
Check that Siphons are filled with water. If not, it is necessary to fill the siphons with water.
Ductwork: check and cleaning if the ductwork is obstructed.
once every 5 years
Exchanger: check the exchanger and clean it (withdraw the exchanger and wash it with soapy water, taking care not to twist
the aluminium blades. The exchanger must be perfectly dry before it is put back into the heat recovery system).
In all cases, it is essential to comply with the standard in force in the country of the installation.
Fans:
· check the blades
· check and possibly replace the antivibration sleeve and the collars
· check and cleaning if the grilles protecting the fans are obstructed
6.2. FUSE
External Fuse :
· 250V T1.6A / Ø5x20 mm
Internals fuses :
· Fuse F1 : Fuse T1A / Ø5x20 mm
· Fuse F2 : Fuse T630 mA / Ø5x20 m
6.3. REPLACEMENT OF SUPPLY CABLE
Replacement of supply cable must be carried out by a qualified technician according to the
manufacturer’s instructions and in compliance with the characteristics listed on the nameplate of the
unit.
Details of internal electronic card