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3.4. Connecting the channels
3.4.3. Supply air to dwelling
Via this spout, the ventilation unit feeds the heated air into the
house. For optimum comfort it is necessary to install a silencer in
this duct.
3.4.1. Supply air from outside
The ventilation unit draws in outside air via this spout. This
duct must be thermally and vapour tightly insulated to prevent
condensation on the outside of the duct.
3.4.2. Exhaust air to the outside
3.4.4. Exhaust air from dwelling
Via one of these spouts, the ventilation unit extracts the exhaust air
from the house. In principle, this duct does not need to be thermally
insulated. Only if the ventilation unit is placed outside the thermal
shell of the house (for example in an uninsulated attic) is it
advisable to insulate the duct thermally and vapour-tight.
Via this spout, the ventilation unit discharges the exhaust air to the
outside. This duct must be thermally and vapour-tight insulated to
prevent condensation on the inside and outside of the duct. It is
recommended to use a roof gutter that prevents condensation or
rainwater from leaking. If this is not the case, the components of the
flue system must be installed watertight between this outlet and the
roof gutter. The unit drains any condensation water via the
condensation drain.
ä
Warning!
When using the unit in the stacked construction, return flow to the
house from the central exhaust air duct must be prevented at all
times. In this case, a mechanical non-return damper must be used
in the discharge duct of the unit.
Low-rise
construction
High-rise
construction
Note
For optimum comfort it is necessary to install a
silencer in this duct.
ä Attention
!
To prevent condensation, the duct coming from outside and the
duct going out to the ventilation unit must be insulated thermally
and vapour-tight.
