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TF6790_A_NOT_DXA230_EVOLUTION
Aereco S.A.
10.1. SUPPLY GRILLES
For good supply air distribution, it is important that the stream should be able to stick to the wall or
ceiling. This requires placing the units less than 20 cm from the ceiling and making sure that the
stream of air does not cause discomfort for the occupant (draught, etc.).
In order to ensure good air change in all parts of the room, it is generally necessary to
avoid placing the unit too close to doors of the main rooms.
10.2. EXHAUST BXC UNITS
Regarding the BXC exhaust units, we recommend the following positioning: ends not more
than 10 cm from the walls and at least 1.80m from the floor. When the units are placed in the
ceiling, the same rules can be applied for the distance from the wall (In addition to better aeraulic
performance, this distance also allows easier access for measurement, especially when using an
airflow cone).
Because cooking, heating appliances give off heat, humidity-controlled units must be
placed at least 50 cm from these appliances. The same recommendation has to be
followed if the apartment is equipped with air conditioning.
The BXC exhaust unit offers a range of possible airflow settings to meet specific needs, or
regulatory requirements. The fixed shutter can be set at one of six positions, with an average step
between each setting of + 10 m
3
/h (maximum = + 50 m
3
/h). See the table below for more details
concerning the airflow set up at 60 Pa.
Ø 100 mm
Ø 125 mm
Pos.
Min airflow (m
3
/h)
@ 60 Pa
Max airflow (m
3
/h)
@ 60 Pa
Pos.
Min airflow (m
3
/h)
@ 60 Pa
Max airflow (m
3
/h)
@ 60 Pa
0
9
62
0
9
54
1
14
70
1
14
62
2
19
77
2
19
70
3
23
85
3
23
77
4
28
93
4
28
85
5
33
101
5
33
93
Case of exhaust units with manual flow control
The installation of a unit with a manual control (switch) must be such that it is easy to trigger the
boost flow rate.
All of the manual control devices must be:
·located at a height between 0.90 m and 1.30 m from the floor;
·operable from either a standing or a sitting position;
·located more than 0.40 m from an inside corner or from any other obstacle to the approach of a
wheelchair, to allow access by disabled persons.
If the flow is controlled manually by a pull cord, and the unit is directly above a door or window, or
a passage, a pull cord take-up device must be provided.
Case of motorized appliances
Individual mechanical devices (such as exhaust hoods, clothes dryers, or isolated motorized
exhaust fans) must not be connected to the exhaust duct, whether natural or forced draught.
Case of connected exhaust units:
It is possible to add up to 3 exhaust units connected to
the DXA Unit (see: § 4.1.Electrical connection on the DXA Unit). If using this type of installation,
make sure the exhaust units have the appropriate supply (requires specific transformer code
CAL261EX).
Ø100 mm
172
68
169
174
Ø100 mm
SDC 100 supply unit
BXC exhaust unit
