OPERATING
&
INSTALLATION
INSTRUCTIONS
FOR
PEDESTAL
WOOD
HEATERS
31
8.3
MINIMUM
FLUE
SYSTEM
HEIGHT
Flue
heights
and
lengths
from
AS/NZS
2918:2001
The
top
of
the
flue
system
should
be
tall
enough
to
be
above
the
air
turbulence
caused
when
wind
blows
against
the
house
and
its
roof.
The
flue
exit
shall
be
located
outside
the
building
in
which
the
appliance
is
installed
so
that:
a)
The
flue
pipe
shall
extend
not
less
than
4.6
m
above
the
top
of
the
floor
protector;
b)
The
minimum
height
of
the
flue
system
within
3
m
distance
from
the
highest
point
of
the
roof
shall
be
600
mm
above
that
point;
c)
The
minimum
height
of
the
flue
system
further
than
3
m
from
the
highest
point
of
the
roof
shall
be
1000
mm
above
roof
penetration;
d)
No
part
of
any
building
lies
in
or
above
a
circular
area
described
by
a
horizontal
radius
of
3
m
about
the
flue
system
exit.
8.4
THE
RELATIONSHIP
BETWEEN
THE
FLUE
SYSTEM
AND
THE
HOUSE
Because
the
flue
system
is
the
engine
that
drives
the
wood
heating
system,
it
must
have
the
right
characteristics.
The
signs
of
bad
system
design
are
cold
downdraught
when
there
is
no
fire
in
the
wood
fire,
slow
kindling
of
new
fires,
and
smoke
roll
‐
out
when
the
door
is
opened
for
loading.
There
are
two
guidelines
to
follow.
First,
the
flue
system
should
be
installed
up
through
the
heated
space
of
the
house,
not
out
and
up
an
outside
wall.
Second,
the
flue
system
should
penetrate
the
top
of
the
building
at
or
near
the
highest
heated
space.
8.4.1
WHY
INSIDE
FLUE
SYSTEMS
ARE
PREFERRED
Flue
systems
that
rise
straight
up
from
the
wood
fire
flue
collar
provide
the
best
performance.
Flue
systems
that
rise
inside
the
warm
space
of
the
house
tend
to
provide
a
small
amount
of
draft
even
