FOCUS 320 SBR Owner's Manual
19
RSF Woodburning Fireplaces
* Refer to the text to determine the appropriate flashing
** See particulars under "Through the Wall Offset
"
section
Figure 8 Offset Chimney Installation Example
Figure 9 Offset Chimney Through a Wall Example
Through the Wall Offset
You can also go through the wall at an angle starting directly at the fireplace as depicted in Figure 9. An angled wall
insulated radiation shield (XM-7EWRSI30 or XM-7EWRSI45) must be used wherever the chimney passed through
an exterior wall. Make sure you have enough ceiling height. If not, you might want to consider installing the fireplace
in an outside chase.
If the chimney is enclosed once outside of the house, do not install the outside plate of the angled wall
insulated radiation shield.
Refer to the angled wall insulated radiation shield installation sheets for more detailed installations instructions.
CHASE ENCLOSURE
If the chimney runs up the outside of the house, we recommend that it be enclosed in a chase structure. The chase
should be constructed in such a way that it is an extension of the home (see Figure 10). It should be well insulated
between the footings and the floor of the home to prevent heat loss. If the climate in your area is mild, insulate the
chase at least to the first firestop. If the climate in your area is very cold, insulate the chase to the top to keep the
chimney warmer, increase the draft, and reduce creosote buildup. We also recommend insulating the ceiling of the
chase just as if it were in the attic space. This will prevent cold air from dropping down through the chase and into
the room where the fireplace is installed (see Figure 10).
Some local codes require that the walls be insulated, vapor sealed and sheathed with a fire rated gypsum board
(see Figure 10). We strongly recommend this procedure for all installations to prevent cold drafts from originating
in the fireplace enclosure. If you follow this procedure, we recommend that you do not insulate the wall above the
front of the fireplace.
**
