74D0010
13
VENT INSTALLATION
Figure 7 - Combustible Clearances for Vent Pipe
A minimum of 3" clearance to the top is
required along horizontal length until flue
pipe penetrates outside wall.
A minimum 1"
clearance to
combustibles
permitted all
around flue at
outside wall
Horizontal sections of this vent system require a minimum
of 3" clearances to combustibles at the top of the flue
and 1" clearance at the sides and bottom
until the flue
penetrates the outside wall.
A minimum 1" clearance all
around the flue is acceptable at this point of penetration.
Vertical sections of this vent system require a minimum of
1" clearance to combustibles on all sides of the pipe.
W
ARNING
12" vertical rise required
before horizontal run
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