Binding
agents
%
of
pressed
mass
<2
2
<2
1
Not
more
than
20%
of
the
pellet
may
have
a
length
greater
than
7.5
times
its
diameter
D.
2
The
DIN
prohibits
the
use
of
any
added
substance.
However,
this
prohibition
is
not
valid
for
small
heating
systems.
DIN
plus
proposes
the
combination
of
the
qualitative
parameters
proposed
by
standard
DIN
51731
and
by
Austrian
standard
Önorm
M
7135.
The
pellet,
as
also
stipulated
by
current
Italian
legislation
governing
the
commercial
technology
characteristics
of
fuels
(DPCM
2.10.1995)
must
be
produced
exclusively
with
untreated
wood
chippings,
with
no
other
added
materials.
It
is
strictly
prohibited
to
use
any
solid
or
liquid
fuel
other
than
the
pellet
to
feed
the
stove.
In
order
to
optimise
the
use
of
the
product
we
recommend
using
pellets
which
have
been
given
a
quality
certificate
by
an
authorised
body.
The
use
of
pellets
other
than
those
directed
by
the
installer
may
lead
to
heater
malfunction
and
to
the
guarantee
becoming
invalid.
Storing
and
even
moving
the
pellets
are
important
operations
to
be
carried
out
with
care:
•
The
fuel
must
be
stored
in
a
dry
place
away
from
cold;
•
The
pellets
must
be
moved
so
as
to
avoid
excessive
crumbling
into
fine
dust.
Observance
of
these
two
simple
rules
makes
it
possible
both
to
obtain
better
fuel
efficiency
and
to
preserve
the
mechanical
moving
parts
of
the
apparatus.
If
the
product
is
kept
out
of
service
for
long
periods
of
time
(over
fifteen
days),
the
tank
must
be
emptied
of
any
residual
fuel,
in
order
to
prevent
any
excessive
dampness
of
the
fuel
causing
the
product
to
malfunction.