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INSTALLATION IN A CATHEDRAL
CEILINg
1. Mark a line on the side of the Cathedral
Ceiling Support Box to correspond to the line
of the roof pitch, as shown in Figure 18. Allow
for the Support Box to protrude below the
low side of the finished ceiling a minimum
of 2".
2. Position the appliance at its proper
location on the floor. Pay close attention to
the manufacturer's installation instructions
regarding the distances from combustibles,
etc. The appliance must also be positioned so
the Support Box will not interfere with roof
rafters or other structural framing.
3. Run a plumb line from the center of the
flue exit on the stove to the ceiling. Mark the
point on the ceiling where the plumb line
intersects. This represents the center of the
support box. Drill a small hole through the
ceiling at this point, so it can be located from
the top of the roof.
4. From the roof, locate and mark the outline
of the Support Box.
5. Remove shingles or other roof covering as
necessary to cut the rectangular hole for the
Support Box. Cut the hole 1/8" larger than the
dimensions of the Support Box. (Figure 19).
The rectangular hole should be centered on
the small hole which you drilled through the
ceiling to mark the location. Again, verify that
you are not cutting through rafters or framing
members.
6. Run the Support Box through the roof
as shown in Figure 20, and place it so that
the bottom of the Support Box protrudes at
least 2" below the finished ceiling. Align the
Support Box vertically and horizontally with
a level. Temporarily tack the Support Box in
place through the inside walls and into the
roof sheathing.
7. Using tin snips, cut the Support Box from
the top corners down to the roof line, and
fold the resulting flap over the roof sheathing
(Figure 21). Before nailing it to roof, run a
Figure 18
Figure 19
Figure 20
Figure 21
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