Osburn OB04002 - Manual (Page 60)

Stratford Fireplace Installation and Operation Manual
60 _____________________________________________________________________
8.6.2 OFFSET CHIMNEY INSTALLATION
Table 1 - The minimum system height when using elbows is:
Fireplace model STRATFORD
Chimney model All models
Vertical installation 15 ft. (4.6 m)
Two (2) elbows 15 ft. (4.6 m)
Four (4) elbows 17 ft. (5.2 m)
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. In many cases, it is recommended to secure
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.
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 preceding figure).
6. A support must be used on the first 15' section (4.6 m).
7. Continue with the regular installation.