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TF6401_E
Aereco S.A.
3.2.5. DUCT CONNECTIONS TO THE DXA UNIT
The connections to the DXA 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.
Fresh air
(outdoor to indoor)
Used air
(indoor to outdoor)
Fresh air supply
(outdoor to indoor)
Exhaust air
(indoor to outdoor)
DXA top view
Each supply unit can be connected to a distribution box by a Ø100 mm for rigid duct or
by a Ø75 mm duct for semi-rigid duct. Each semi-rigid duct cannot afford an airflow
bigger than 30 m
3
/h.
1
Ø100 or Ø75 mm
2
Ø100 mm or Ø125 mm
3
Ø160 mm
4
Ø160 + 50 mm insulation
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
1
1
1
1
2
2
2
3
4
4
SDC100
SDC
100
SDC100
SDC100
BXC
BXC
BXC
compensation
to exhaust air outlet
to fresh air inlet
