Osburn
Matrix
Inbuilt
Installation
and
Operation
Manual
______________________________________________________________________________
21
4.5.1.2
Long
Lasting
Low
Output
Fires
Sometimes
you
will
want
to
build
a
fire
to
last
up
to
eight
hours,
but
don’t
need
intense
heat.
In
this
case
use
smaller
pieces
of
hardwood
and
place
the
logs
compactly
in
the
firebox
so
the
pieces
are
packed
tightly
together.
You
will
need
to
fire
the
load
hot
for
long
enough
to
fully
char
the
log
surfaces
before
you
can
turn
the
air
down.
Make
sure
the
fire
is
flaming
brightly
before
leaving
the
fire
to
burn.
4.5.1.3
High
Output
Fires
for
Cold
Weather
When
the
heat
demand
is
high
during
cold
weather,
you’ll
need
a
fire
that
burns
steadily
and
brightly.
This
is
the
time
to
use
your
biggest
pieces
of
hardwood
fuel
if
you
have
it.
Put
the
biggest
pieces
at
the
back
of
the
firebox
and
place
the
rest
of
the
pieces
compactly.
A
densely
built
fire
like
this
will
produce
the
longest
burn
your
wood
inbuilt
is
capable
of.
You
will
need
to
be
cautious
when
building
fires
like
this
because
if
the
air
is
turned
down
too
much,
the
fire
could
smoulder.
Make
sure
the
wood
is
flaming
brightly
before
leaving
the
fire
to
burn.
The
wood
should
be
positioned
in
a
north/south
fashion,
that
is,
from
the
front
to
the
back
of
the
firebox.
4.5.1.4
Maximum
Burn
Cycle
Times
The
burn
cycle
time
is
the
period
between
loading
wood
on
a
coal
bed
and
the
consumption
of
that
wood
back
to
a
coal
bed
of
the
same
size.
The
flaming
phase
of
the
fire
lasts
for
roughly
the
first
half
of
the
burn
cycle
and
the
second
half
is
the
coal
bed
phase
during
which
there
is
little
or
no
flame.
The
length
of
burn
you
can
expect
from
your
wood
inbuilt,
including
both
the
flaming
and
coal
bed
phases,
will
be
affected
by
a
number
of
things,
such
as:
•
firebox
size,
•
the
amount
of
wood
loaded,
•
the
species
of
wood
you
burn,
•
the
wood
moisture
content,
•
the
size
of
the
space
to
be
heated,
•
the
climate
zone
you
live
in,
and
•
the
time
of
year.
