Offset Chimney Installation - Osburn STRATFORD Installation Instructions Manual

3.3

OFFSET CHIMNEY INSTALLATION

The minimum chimney height when using elbows is:
Fireplace model
Chimney model
Vertical installation
Two (2) elbows
Four (4) elbows
*Including the height of the fireplace itself.
After reaching the location requiring the elbow, proceed as follows:
1. Install the first elbow; turn it in the required direction. Secure it to the chimney according to
the chimney manufacturer's instructions.
connections with three (3) ½" (12 mm) metal screws.
2. Install the necessary chimney lengths to achieve the required offset. Lock the chimney
lengths together according to the chimney manufacturer's instructions. In many cases, it is
recommended to use three (3) ½" (12 mm) screws. If the offset length is made of two (2)
chimney lengths or more, many chimney manufacturers may require that you use an offset or
roof support halfway up the offset. If penetrating a wall, install a wall radiation shield
supplied by the chimney manufacturer (see figures 40 & 41).
3. Use another elbow to turn the chimney vertically. Secure 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.
5. From below, install a firestop supplied by the chimney manufacturer (see figure 38).
6. A support must be used on the first 15' section (4.6 m).
7. Continue with the regular installation.
OSBURN STRATFORD
All models
15 ft. (4.6 m)*
15 ft. (4.6 m)*
17 ft. (5.2 m)*
Table 1
In many cases, it is recommended to secure
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