FOCUS ST Owner's Manual
18
RSF Woodburning Fireplaces
BENEATH HEARTH EXTENSION
If the FOCUS ST is installed on a non-combustible
floor, the spark guard 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 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
13). 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 site built.
MANTEL
For combustible mantels shelves, please see Table 1 (J-K) for the maximum depth of the mantel shelf and their
clearance requirements. See Figure 1 for an example.
Combustible mantel posts, of any depth, can be installed on either side of the fireplace as long as they respect the
same minimum distance as the side wall (see Table 1 (B)).
Masonry and other non-combustible mantel shelves can be placed directly above the top of the fireplace facing or
higher.
If a non-combustible mantel is desired at a height lower than the minimum height for a combustible mantel,
the wall framing & facing material used between the top of the metal fireplace face and the bottom of the mantel
shelf must be non-combustible.
REFRACTORY BRICKS' INSTALLATION
The refractory bricks for the FOCUS ST fireplace
are placed in the fireplace at the factory. If, for any
reason, they should need to be replaced, the
following order should be observed (see Figure 14).
To remove any of the refractory bricks, just follow
the installation procedure in the reverse sequence.
Refer to Figure 14 to adequately identify which
refractory brick is the right and which is the left at
each step of the installation.
1. Insert the baffle (1) into the firebox. The baffle
is quite heavy and must be lifted to the top of
the firebox. A small jack or 2"x4" lengths can be
used to hold it at the top of the firebox
temporarily. Make sure to orient the baffle
correctly. The side with the most holes should
point towards the floor of the fireplace.
2. While supporting the baffle as high as it will go,
place the left and right side refractory bricks
(both right (2) and both left (3)) as shown in
Figure 14.
Figure 13 Special Custom-made Spark Guard
Figure 14 Refractory Bricks Installation
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
RSF
Fireplace
