17
Exterior supported installations are used when passing through a living space to an exterior mounted
chimney. The exterior supported installation uses our secure wall support bracketing system that
provides lateral and vertical weight bearing support.
Note: The total height of chimney from tee to top termination should not exceed 40 ft.
Step 1
-
Position appliance: locate appliance in accordance with the appliance manufacturer’s instructions and
clearance specifications. Pay particular attention to the outlet flue collar of the appliance and endeavor to
position it between the wall studs.
Step 2
–
Rough frame wall opening: The wall opening should be centered between two wall studs. To
determine the height of the opening it is helpful to preassemble stove connector pipe and fit to flue outlet collar.
Mark location on wall. Cut and frame opening. Refer to Table 1 on Page 8 for rough opening dimensions.
Secure to the framing with a minimum of four 8-penny nails or four #8 x 1 ½” wood screws. From the interior,
slide the adjustable extension onto the firestop section tube. Adjust the extension so that it will be flush with the
interior trim plate once installed. Use a minimum of four self drilling screws to secure the adjustable extension
to the firestop section tube.
Step 3
–
Wall thimble
installation: The wall
thimble assembly consists
of three parts: The
exterior firestop section,
the adjustable extension
and the interior trim plate.
Install the firestop section
on the outside wall with
the tube section pointing to
the structure interior. It is
recommended to seal the
outside edges of the
firestop section with a
water-proof silicone
sealant.
Exterior Supported Installation
Universal Adapter
Chase Top Flashing
Custom Made &
Sold Separately
