393800
‐
2
Rev
1:
02.058.2017.
KJK
We
reserve
the
right
to
change
technical
data
without
notice.
http://www.ensy.no
Page 26
Condensation/isolation
Isolation
is
necessary
to
safeguard
thermal
‐
,
sonic
‐
and
fire
considerations
at
the
plant.
Most
often
it
is
a
combination
of
these
are
due
to
isolate.
Reasons
for
thermal
insulation
of
ventilation
ducts
are:
obtain
good
heat
economy
by
limiting
heat
loss
achieve
a
specific
outlet
temperature
of
the
ventilation
air.
preventing
condensation
on
either
the
inside
or
outside
of
the
duct.
Heating
costs
reduced
by
preventing
the
heat
supplied
in
ventilation
air
can
be
transferred
to
unheated
surroundings.
If
the
ducts
are
positioned
in
a
cold
environment,
such
as
in
an
attic,
where
the
temperature
is
significantly
lower
than
the
ventilation
air,
there
is
a
risk
of
condensation
inside
the
ducts.
This
can
be
prevented
by
isolating
the
channel
exterior.
In
this
case,
the
channel
wall
being
diffusion
and
would
therefore
insulate
externally
with
a
diffusion
material
of
mineral
wool.
It
can
also
be
used
insulation
tubes
(100
mm
mineral
wool)
with
plastic
diffusion
barrier
pulled
over
the
ducts.
The
same
applies
to
insulation
of
pipings
between
the
unit
and
diffusors,
bringing
the
cooled
air
up
to
the
rooms.
Note!
Remember
good
overlap
of
diffusion
barrier
and
tape
all
joints
with
duct
tape.
Fresh
air
and
exhaust
duct
should
always
be
condensation
insulated
throughout
its
length.
Proper
performance
of
the
unit
connection
is
especially
important.
Similarly,
isolate
all
other
ducts
for
cold
and
uninsulated
room.
