Owner`s manual

26591-1-1209 Page 31
Figure 39
Acceptable vertical and horizontal vent run.
Unacceptable vertical and horizontal vent run.
Venting Graph (Dimensions in Feet)
VERTICAL DIMENSION FROM THE BOTTOM OF THE UNIT
TO THE CENTER OF THE FLUE OUTLET
WITH VERTICAL
OR HORIZONTAL TERMINATION CAPS
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
HORIZONTAL RUN
REAR EXIT - VERTICAL AND HORIZONTAL TERMINATION
(DIMENSIONS IN FEET)
REAR HORIZONTAL
VENT CONNECTION
B
A
NOTE: FLEX VENT
MAXIMUM HEIGHT
IS 35 FEET
To Use the Vent Graph (Figure 39)
1. Determine the height of the center of the
horizontal vent pipe. Using this dimension on
the Sidewall Vent Graph, locate the point it
intersects with the slanted graph line.
2. From the point of this intersection, draw a vertical
line to the bottom of the graph.
3. Select the indicated dimension, and position the
unit in accordance with same.
EXAMPLE A:

is 12 feet, 4 inches the horizontal run to the outer

EXAMPLE B:

is 6 feet, 9 inches, the horizontal run to the outer

SPECIAL NOTE: For each 45 degree elbow
installed in the horizontal run, the length of the
horizontal run MUST be reduced by 18" (45cm).
This does not apply if the 45 degree elbows are
installed on the vertical part of the vent system.
Reduce 3' for every 90° elbow.
Example: According to the chart the maximum
horizontal vent length is 20' and if two 45 degree
elbows are required in the horizontal vent it must
be reduced to 17'.
The maximum number of 45 degree elbows
permitted per side wall installation is two (2).
These elbows can be installed in either the vertical
or horizontal run.
VENTING FIREPLACE - REAR