Due to design error (mine) on the house I am building I need to offset the vent pipe 2 or 3 feet to avoid some exposed rafter ties. When I purchased my chimney pipe I ordered two 45 degree elbow connections. While reading the installation manual I learned that they only make the elbows in 15 and 30 degree units, it is not permissible to join a 15 and a 30 to make a 45 degree bend. Fair enough, but somewhat confusing because I was holding their brand of 45 degree elbow in my hand.
I will buy some 30 degrees but am curious as to the reason for this limitation. Is it due to potential creosote buildup, or something else?
My main question is how to safely support this stack with the offset. There is a total of 16 ft. pipe from stove to ceiling. Do I need some kind of support bracket attached to the elbows? Do both elbows need support, or can I just do the bottom one?
Safety is the prime concern but I would like as clean looking install as I can manage. It is a cathedral ceiling and the entire vent pipe is exposed.
I will buy some 30 degrees but am curious as to the reason for this limitation. Is it due to potential creosote buildup, or something else?
My main question is how to safely support this stack with the offset. There is a total of 16 ft. pipe from stove to ceiling. Do I need some kind of support bracket attached to the elbows? Do both elbows need support, or can I just do the bottom one?
Safety is the prime concern but I would like as clean looking install as I can manage. It is a cathedral ceiling and the entire vent pipe is exposed.