ORACLE2 Owner's Manual
14
RSF Woodburning Fireplaces
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. 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 to insulate 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 11).
Some local codes require that the walls be insulated, vapor
sealed and sheathed with a fire rated gypsum board (see
Figure 11). 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.
REMEMBER:
Check local codes concerning installation
requirements and restrictions in your area.
MASONRY CHIMNEY
Installing your ORACLE2 fireplace with a masonry chimney
still requires using EXCEL chimney from the top of the
fireplace to the wall where it will connect to a listed liner that
will run up inside the masonry chimney (see Figure 12).
The stainless steel liner should be fitted inside the clay liner all the way to the top of the masonry chimney. It is
not meant to replace the clay liner. You can use either the EXCEL liner or any other listed liner to ULC-S635,
ULC-S640 or UL-1777.
Special care is to be taken to make sure that you have a good solid connection between the EXCEL chimney and
the liner. A masonry adaptor (FO-FDM8) was designed specifically for that purpose and is available from your
RSF dealer. It will attach to the liner with 3 stainless steel rivets (provided) and to the EXCEL chimney with 3
screws (provided).
After mortaring in place, the connection between the EXCEL chimney and the liner should not be visible in order
to isolate the heat released through the liner from the fireplace enclosure.
As depicted in Figure 12, you must install at least one 18" length of EXCEL chimney after the EXCEL chimney
elbow. The uppermost part of the EXCEL chimney - where it enters the masonry chimney - must be a minimum of
12" from the ceiling.
NOTE:
If the ceiling is high enough, you can install one or more EXCEL chimney lengths directly on the
fireplace before the elbow.
If you use a flexible liner, make sure to be careful when cleaning to ensure that the stainless steel flexible liner is
not dislodged in any way.
10'
2' min.
Optional
Decorative
Shroud
Insulation
Chase liner of fire rated
gypsum board is
recommended (may be
required by local authorities)
Radiation
Shield,
with Storm
Collar in
the Attic
RS
F
Fi
re
pla
ce
Figure 11 Chimney Installed with a Chase
Enclosure Example
