As you assemble each pipe section secure the outer wall using three 10 3 4 self tapping stainless steel sheet metal screws.
Double wall chimney pipe installation.
This is the male end of the chimney pipe.
The screws should be equidistant around the pipe perimeter.
Install the chimney pipe in the interior of the structure whenever possible.
If double wall black pipe sections dwb are to be used the double wall black adapter dwba is required to be attached at the stove collar.
We recommend bracing vertical venting every 5 to 6 feet.
Now it s time to start putting our insulated double wall class a chimney pipe together.
Secure the dwb18a to the ceiling support with sheet metal screws.
A through the wall installation requires additional components wall thimble tee w cap tee support and wall straps.
It may be necessary to attach the adjustable length dwb18a section to the chimney ceiling support prior to installing the sections.
A cold exterior chimney will produce less draft and will generate more creosote.
If at all possible avoid offsets that restrict the natural draft.