393870-2 Rev 0: 11.07.2018 BBV
We reserve the right to change technical data without notice.
http://www.ensy.no
Page 27
Pairing of duct sections.
All joints between ducts, T-
pipes, bends, reducers, etc.
have to be “locked" by
using special tape or at
least 3 pieces of self-
tapping screws.
.
Sound reduction
To avoid disturbing noise from blowers in living area installation of sound-absorber (silencer) in the duct
for supply and extract air recommended. (length = 0.9 meters each section)
To prevent sound transmission between rooms via the duct system, and reduce any noise that occurs in
the duct system, is also is recommended a silencer in front of each supply diffuser in the living area.
Flexible ducts.
Flexible ducts can be used for adjustments between the unit and roof cowl / fresh air inlet. Alternatively,
the flexible silencers used (remember requirements for outdoor sound level).