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TF6790_A_NOT_DXA230_EVOLUTION
Aereco S.A.
3.2.4. 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, used air and Supply
fresh 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
All supply grilles have to be balanced to
reach the required airflow in each main
rooms (living room, bedrooms....). This may
be done by the use of manual registers,
blocks of foam, or grilles with nuts inside
allowing to adjust room by room supply
airflows in each main room.
Duct diameters and recommendation concerning the type of ducts
1
1
1
1
2
2
3
4
4
Supply grille
Supply grille
Supply grille
Supply grille
to exhaust air outlet
to fresh air inlet
BXC Exhaust unit
BXC Exhaust unit
