Owner`s manual

29843-2-0612Page 16
EXAMPLE A:
If the vertical dimension from the top of the unit is 35 ft. (10.67 m), the
horizontal run to the outer wall ange must not exceed 5 ft (1.52 m).
EXAMPLE B:
If the vertical dimension from the top of the unit is 5 ft. (1.52 m), the
horizontal run to the outer wall ange must not exceed 11 ft. (3.35 m).
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 ft. (91.4 cm) for
every 90° elbow.
Example: According to the chart the maximum horizontal vent length
is 20 ft. (6.10 m) and if two 45 degree elbows are required in the
horizontal vent it must be reduced to 17 ft. (5.18 m).
The maximum number of 45 degree elbows permitted per side
wall installation is two. These elbows can be installed in either the
vertical or horizontal run.
NOTE: The rst elbow does not get counted.
Vertical Venting
When venting long straight vertical sections, use of the vertical vent
bafes may be required for optimal ame performance.
To install vertical vent bafes, align the two holes on the vertical
vent bafe with the two holes in the ue bafe. Secure the vertical
vent bafe with the screws provided. Repeat for both sides of the
ue bafe.
Figure 22
VENTING FIREPLACE
To Use the Vent Graph
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.
Acceptable vertical and horizontal vent run.
(40 ft. (12.19 m) maximum vertical and 20 ft. (6.10 m) maximum
horizontal)
Unacceptable vertical and horizontal vent run.
Figure 21