25
CHIMNEY INSTALLATION INSTRUCTIONS
1.
Cut and frame the holes in the ceiling, floor and roof where the chimney will pass (see figure 25). Use
a plumb bob to line up the center of the holes. The sizes are indicated in table 1 for the floor and
ceiling holes and table 2 (page 27) for the roof holes.
CHIMNEY
MODEL
SQUARE HOLE SIZE
OPENING
ASHT+/
12 3/8" (314 mm)
S2100+/
14 1/8" (359 mm)
AC
15 " (380 mm)
Table 1
Figure 25
2.
From below, install a firestop in each ceiling/floor separation through which the chimney will pass.
At the attic level, install an attic radiation shield from above. (figures 26 & 27).
3.
For ASHT+ / and S2100+ / chimneys, place the first chimney length on the
fireplace. To lock it in place, turn ¼ of a turn clockwise. With the AC chimney, you must use a
starter section before installing the first chimney length (figure 28). Continue installing chimney
lengths making sure to lock each length in place.
4.
Every time the chimney passes through a ceiling or a wall, install the appropriate firestop. When you
reach the desired height, install the roof support. (Refer to instructions included with the support).
5.
Then, put the roof flashing in place and seal the joint between the roof and the flashing with roofing
pitch. (see figures 29 & 30). For sloping roofs, place the flashing under the upper shingles and on top
of the lower shingles. Nail the flashing to the roof, using roofing nails.
6.
Place the storm collar over the flashing, and tighten it with the bolt supplied. Finally, seal the joint
between the storm collar and the chimney, using silicone caulking.
7.
Install the chimney cap.
Figure 26
Figure 27
AC CHIMNEY INSTALLATION
