OPEL PLUS KEYSTONE Owner's Manual
24
RSF Woodburning Fireplaces
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 14). 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 14).
Some local codes require that the walls be insulated,
vapor sealed and sheathed with a fire rated gypsum
board (see Figure 14). 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 OPEL+ KEYSTONE 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 15).
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-FDM7) 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 15, 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.
* Refer to the text to determine the appropriate flashing
Figure 14 Chimney Installed with a Chase
Enclosure Example