FP1LM
Manoir
‐
Installation
and
Operation
Manual
15
MINIMUM
MEASUREMENT
E
2"
(51
mm)
A
noncombustible
floor
protection
must
be
installed
in
front
of
the
unit.
For
more
details
see
Section
1.3.3:
Minimum
Heart
Extension
Requirements
.
The
use
of
an
R
value
is
convenient
when
more
than
one
material
is
going
to
be
used
in
the
hearth
extension
to
cover
the
combustible
surface.
This
is
because
R
values
are
additive,
whereas
K
values
are
not.
To
find
the
corresponding
R
factor
to
use
for
some
selected
materials,
please
see
Thermal
Characteristics
of
Common
Floor
Protection
Materials
table.
CAUTION:
DO
NOT
LEAVE
CARPET
UNDER
THE
FLOOR
PROTECTION
IN
FRONT
OF
THE
FIREPLACE
