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4.3
OFFSET CHIMNEY INSTALLATON
The minimum chimney height when using elbows is:
Fireplace model
Chimney model
Vertical installation
Two (2) elbows
Four (4) elbows
After reaching the location requiring the elbow, proceed as follows:
ASHT+ / HT6103+ / S-2100+ / HT6000+ Chimneys
1. Install the first elbow; turn it in the required direction. Fasten it to the chimney with the three
(3) _" (12 mm) metal screws provided with the elbow.
2. Install the necessary chimney lengths to achieve the required offset. Lock the chimney lengths
together: it is recommended to use three (3) _" (12 mm) screws. If the offset length is made
of two (2) chimney lengths or more, use an offset or roof support halfway up the offset. If
penetrating a wall, install a wall radiation shield (see figures 32 & 33).
3. Use another elbow to turn the chimney vertically. Secure the elbow, using three (3) _" (12
mm) screws (provided with the elbow).
4. Use a plumb bob to line up the centre of the hole. Cut a hole for the chimney in the
ceiling/floor. Frame this hole as described previously (refer to page 22).
5. From below, install a firestop (See figure 26).
6. A support (ST+ or SO+) must be used on the first 15' section (5 m.).
7. Continue with the regular installation.
AC Chimney
1. Install the first elbow. Turn it in the required direction. To lock it in place, turn 1/8 of a turn.
Fasten the straps attached to the elbow to the surrounding frame, using nails or drywall screws
(figure 31).
2. Install the necessary chimney lengths to achieve the required offset. Lock the chimney
lengths together. If penetrating a wall, use a wall radiation shield.
3. Use another elbow to turn the chimney vertically. Lock it to the chimney. Fasten the straps
attached to the elbow to the surrounding framing using nails or drywall screws.
4. Use a plumb bob to line up the centre of the hole. Cut a hole for the chimney in the ceiling.
Frame this hole as described previously.
5. From below, install a firestop. (see figure 27).
6. Continue with the regular installation.
N.B. : An AC-SB starter section must be used before installing an elbow. When an offset is
needed immediately off the top of the fireplace, a starter section allowing a 4" offset (AC-SBO) is
available.
BIS ULTIMA
ASHT+ / HT6103+ / S-2100+ / HT6000+ / AC
12 ft. (3.66 m)
15 ft. (4.57 m)
17 ft. (5.18 m)
Table 3
25 26
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