Vent Installation - Monessen Hearth BLDV400 Installation And Operating Instructions Manual

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.
If the vertical rise is 7
horizontal run.
Vertical sections of this vent system require a minimum of 1" clearance to
combustibles on all sides of the pipe.
A minimum of 3" clearance to the top is
required along horizontal length until flue
pipe penetrates outside wall.
74D0009
1 / ft. or more, only a 1" clearance is needed on top of any
2
Figure 7 - Combustible Clearances for Vent Pipe

VENT INSTALLATION

12" vertical rise required
before horizontal run
A minimum 1"
clearance to
combustibles
permitted all
around flue at
outside wall
13