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OPEL AP
10 ft
2 ft
min.
Storm collar
Flashing*
12” min.
Insulation
Chase liner of fire rated gypsum
board is recommended (may be
required by local authorities)
Fire stop, joist radiation shield
Opel AP
2” min.
clearance to
combustibles
Figure 9: Chimney installation with chase enclosure
Use the offset option if you need to clear a joist or pass
around a cupboard. Install the fireplace and chimney as
described earlier. When you require an elbow, proceed as
follows:
See the detailed offset chart in the EXCEL installation
instructions.
1. Install the required elbow. Turn it in the desired direction,
and fasten it to the other section with the 3 metal screws
provided at the joint.
2. Install enough lengths to obtain the desired offset.
Secure each joint with 3 metal screws.
3. Use another elbow to return the chimney to the vertical
direction.
4. Install a roof support, wall support, or an offset support
at each offset to support the weight of the flue (elbows
are not designed to support a flue above an offset).
FRAMING IN
The enclosure walls can be framed with any suitable mate-
rials (2x4 or 2x6 studs, plywood, gypsum board, etc.).
Because of the high heat output potential of the Opel AP,
combustible material must
NOT
go closer to the fireplace
than the standoffs, top, back and sides.
If you like, framing can be set back to allow the facing to be
flush with the front of the fireplace.
Each top standoff has a notch where the gypsum board
can be inserted when finishing.
In front of each side standoff there is a gypsum board
bracket to lean the finishing wall on. Under no circum-
stance the gypsum board or finishing wall should be placed
below this bracket or notch line.
