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TF6400_A
Aereco S.A.
·
If rigid ducts are used, the connection between the DXA 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
DXA Unit and the distribution box.
3.2.5.
EVACUATION OF CONDENSATES
To evacuate condensates, it is recommended to use a lift pump. It is also possible to use a
siphon to evacuate them by gravity, but a minimum slope of about 3° is recommended for
the good evacuation of condensates.
To ensure watertight connections between the condensate evacuation pipe and the lift
pump or the siphon, the DXA Unit is delivered with these components already built-in.
The DXA1240 is equipped with a lift pump, while the DXA1247 is equipped with a siphon.
Only the evacuation pipe to the wastewater has to be realized. This evacuation must be
insulated if installed outside the heated volume (risk of freezing).
Using the lift pump (DXA1240)
·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 DX System. Using
another lift pump can lead to serious problems of functioning and degrade the security of the
system.
All the connections must be watertight.
Using the siphon (DXA1247)
The condensate ducts must not be higher than the DXA Unit evacuation outlet
Before fixing the DXA Unit on the wall, the siphon has to be filled with 0.5 L of water. A funnel can
be used to realise the operation.
Connection with flexible sleeve
Evacuation of condensates with the built-in siphon
Evacuation of condensates with a lift pump
(specific to Aereco)
max 8 m
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