Indoor Installation
General Duct Installation Information
26
The cause for condensate formation is
due to the interplay between the room
air temperature and the room's humidity
level. These two components may
result in the formation of condensate.
The following factors promote the for-
mation of condensate:
•
High building moisture during first
year of operation
•
Low room temperatures in installa-
tion
location
•
Some laundry rooms/bathrooms
nearby or even integrated
•
Little ventilation in installation
location
Condensate always collects at the
coldest spots in a room. In our case,
this is the outgoing air side of the duct.
Measures to minimize the problem:
Avoid Thermal Bridges
No contact between masonry/walls and
airflow or air duct incl. cover plate
Correctly Establishing the Opening
for the Air Duct through the Wall
(Prevent cooling of wall.) The duct must
be pulled through the exterior wall at
least beyond the exterior insulation.
The wall opening (or gap between wall
and air duct) must be filled or sealed
with foam (e.g. PU foam) or insulation
(Sagex/Armaflex).
Air Duct Insulation
The air duct must be insulated
throughout (min. thickness of 25 mm).
The flexible canvas sleeve (prevents
noise transference) must also be
insulated.
Duct System
Sealing tape must be used between
the individual connectors of the air
ducts. (Included in installation kit.)
Use section clips to seal the frame
connections as well. (Included in in-
stallation kit.)
Correct Incorrect
Thermal bridges
Join cutout insulation tightly in corners
(for wall installation without ducts).