OPEL2 Owner's Manual
19
RSF Woodburning Fireplaces
HEARTH EXTENSION
The area immediately in front of the fireplace must be protected by a non-combustible material such as brick, tile,
stone, or slate. Refer to Table 1 (G-H) for the depth and width that the hearth protection should extend beyond the
front and both sides of the door opening (see Figure 1). There is no minimum thickness required for the hearth
extension.
BENEATH HEARTH EXTENSION
If the OPEL2 is installed on a non-combustible floor, the spark guard specified below is not required.
Install the spark guard provided (5" x 36" piece of
sheet metal) halfway under the fireplace and halfway
under the hearth extension and centered on the door
opening. The spark guard will extend 2½" beneath the
fireplace. This will make certain that sparks cannot
lodge in this area and start a fire. If necessary, the
provided spark guard can be cut to the minimum width
specified in Table 1 (I).
If you are preparing a raised installation, you will need
a custom made spark guard, either a "Z" shaped spark
guard or a right angle spark guard (see Figure 14).
The Z-shaped spark guard must be used if the height
between the bottom of the fireplace and the top of the
non-combustible flooring of the hearth extension is less than or equal to 2 ½". The height of the Z-shaped spark
guard must equal the distance between the floor and the base of the unit and go under the hearth extension and
the fireplace by at least 2½". If the unit is installed higher than 2 ½" from the top of the flooring, a right angle spark
guard is necessary. The sides of the right angle spark guard should be at least 2½" x 2½" and must be covered
with non-combustible material. Any custom made spark guard must have the minimum width specified in Table 1
(I), and be installed centered on the door opening.
NOTE
: Custom-made spark guards are not supplied.
MANTEL
Refer to Table 1 (J) for the maximum depth of the
mantel and its installation height. Wood or other
combustible mantels must be placed as specified in
Table 1 (K) and illustrated in Figure 1.
Masonry and other non-combustible mantels can
be placed directly above the top of the fireplace
facing or higher. If the noncombustible mantel is
located between the top of the fireplace facing and
the specified height for a combustible mantel, then
the wall portion between the top of the fireplace
facing and the mantel must be covered in non-
combustible material. If the non-combustible mantel
is located at the same height allowed for a
combustible mantel, or higher, then no special wall
covering is required below the mantel.
If you install a combustible mantel with side posts
and/or with a combustible mantel support
underneath, similar to the one shown in Figure 15,
make sure to respect the clearances specified in
Figure 15.
RSF
Fireplace
Non-
Combustible
Flooring
Right Angle
Spark Guard
(not provided)
More than 2 1/2"
Non-
Combustible
Flooring
Z-Shaped Spark
Guard (not
provided)
2 1/2" or less
Figure 14 Special Custom-made Spark Guard
Combustible
mantel support
may protrude 1"
max. from the
face of the
fireplace and
may extend
downwards
max. 4 1/2"
Refer to Table 1 (K) for
combustible mantel height
above the door opening
Min. 7 1/4" from door opening
to combustible mantel post
Combustible
mantel side
posts or
surround may
extend 8" max.
from the face
of the fireplace
Figure 15 Clearances for Combustible Mantel with
side posts
