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CHIMNEY INSTALLATION INSTRUCTIONS
STRAIGHT INSTALLATION
Cut and frame the holes in the ceiling, floor and roof where the chimney will pass (see Figure 13). Use a
plumb bob to line up the center of the holes. The hole sizes are indicated in Table 2 for the floor and ceiling
holes and Table 3 (page 20) for the roof holes.
Figure 12
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 (see Figures 14a & 14b).
For ASHT+ / and S2100+ / chimneys, place the first chimney length on the fireplace.
To lock it into place, turn ¼ of a turn clockwise. With the AC chimney you must use a starting section
before installing the first chimney length (see Figure 15). Continue installing chimney lengths until you
reach the desired height.
Every time the chimney passes through a roof or a wall, install the appropriate firestop. When you reach the
desired height, install the roof support (see instructions included with the support).
Then, put the roof flashing in place and seal the joint between the roof and the flashing with roofing pitch.
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 (fig. 16a et 16b).
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.
Install the chimney cap.
CHIMNEY MODEL
SQUARE HOLE SIZE
ASHT+/
365 mm (14 3/8")
S2100+/
406 mm (16")
AC
380 mm (15")
Figure 13
