FOCUS 320 SBR Owner's Manual
22
RSF Woodburning Fireplaces
COVERING THE FIREPLACE FACING
Facing materials (see Figure 3 and Figure 4) MUST BE NON-COMBUSTIBLE such as metal, brick, slate or ceramic
tile. Gypsum board is NOT an acceptable facing material. Gypsum board cannot get closer to the fireplace than the
side and top standoffs.
Facing this fireplace can be as simple as using cement boards that will be painted or gluing ceramic tiles with high
temperature silicone sealant.
MANDATORY OPTIONS WITH THE CLEAN FACE
When installing a Clean Face (FO-F2) on your FOCUS 320 SBR, you MUST install the intake duct (part of FO-F2)
to provide sufficient air to the unit along with two Gravity Vent Kits (FO-V2 or FO-V3, sold separately) to provide an
evacuation path for the heat. Neglecting to install either one of these will result in overheating of the unit and may
put your safety at risk. Refer to each option's installation instructions for particular details.
Use only genuine RSF parts. The use of any substitutes will void the warranty and may put your safety at risk.
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 your fireplace 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 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
Masonry and other non-combustible mantels (shelf and posts) can be placed anywhere around the fireplace
opening, without blocking any of the bottom and top louvers. If the non-combustible 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.
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.
Vertical mantel posts on the sides of the fireplace opening must be non-combustible. Combustible mantel posts are
not permitted unless they meet the clearance required to a perpendicular sidewall (see Table 1 (B)).
Figure 13 Special Custom-made Spark Guard
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
