To Use the Vent Graph
1. Determine the height of the center of the horizontal vent
the bottom of the graph.
3. Select the indicated dimension, and position the unit in
EXAMPLE A:
6.5 feet.
EXAMPLE B:
14.5 feet.
Special Note:
horizontal run, the length of the horizontal run MUST be
reduced by 18" (45cm). This does not apply if the 45 degree
Example: According to the chart the maximum horizontal
in the horizontal vent it must be reduced to 17'.
in either the vertical or horizontal run.
Note:
31455-10-1115
VENTING FIREPLACE - TOP
Venting Graph (Dimensions in Feet)
Acceptable vertical and horizontal vent run.
(40' maximum vertical and 20' maximum horizontal)
Unacceptable vertical and horizontal vent run.
Figure 22
Page 17