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Make sure that outdoor humidity or precipitation will not get into the Unit, when connecting outside
air supply and exhaust ducts. The air intake opening in the outside wall should be protected against
precipitation ingress to ventilation duct by grille or roof.
It is recommended to install outside air supply and exhaust ducts as far as possible from each other
to prevent the ingress of contaminated air back to premises. Please refer to local construction
regulations.
IMPORTANT!
Seal the air intake and exhaust ducts connection place well. Use couplings with rubber
gaskets or other selected sealant.
IMPORTANT!
At least 1° ventilation duct incline (refer to Figure 2. Air intake duct connection
diagram") should be ensured or other sufficient measures taken to prevent ingress of outdoor
humidity or precipitation into the Unit.
IMPORTANT!
Both outside air intake and exhaust ducts and externally mounted preheater should be
covered with a layer of thermal insulation of sufficient thickness to prevent condensation of humidity
on their walls due to difference between outdoor and indoor air temperatures.
IMPORTANT!
Avoid using duct grille with dense mesh – it can quickly become clogged with dust and
will prevent fresh air supply. The Unit is equipped with supply air filter to trap dust and insects.
7.3.
Maintenance space
When installing the Unit ensure sufficient space for its maintenance:
Figure 3. Mainteinance space
In front of the Unit
500 mm
Above the Unit
200 mm
