Osburn
Matrix
Inbuilt
Installation
and
Operation
Manual
12
______________________________________________________________________________
The
pieces
should
be
a
consistent
length,
with
a
maximum
of
25
mm
(1”)
variation
from
piece
to
piece.
3.2.4
PIECE
SIZE
Firewood
dries
more
quickly
when
it
is
split.
Large
unsplit
rounds
can
take
years
to
dry
enough
to
burn.
Even
when
dried,
unsplit
logs
are
difficult
to
ignite
because
they
don’t
have
the
sharp
edges
where
the
flames
first
catch.
Logs
as
small
as
75
mm
(3”)
should
be
split
to
encourage
drying.
Wood
should
be
split
to
a
range
of
sizes,
from
about
75
mm
to
150
mm
(3”
to
6”)
in
cross
section.
Having
a
range
of
sizes
makes
starting
and
rekindling
fires
much
easier.
Often,
the
firewood
purchased
from
commercial
suppliers
is
not
split
finely
enough
for
convenient
stoking.
It
is
sometimes
advisable
to
resplit
the
wood
before
stacking
to
dry.
3.2.5
HOW
TO
DRY
FIREWOOD
Firewood
that
is
not
dry
enough
to
burn
is
the
cause
of
most
complaints
about
wood
inbuilts.
Continually
burning
green
or
unseasoned
wood
produces
more
creosote
and
involves
lack
of
heat
and
dirty
glass
door.
See
Section
5:
Maintaining
your
wood
heating
system
for
concerns
about
creosote.
