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To Use the vent Graph (Figure 19)
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:
If the vertical dimension from the floor of the unit is
35 feet, the horizontal run to the outer wall flange must
not exceed 6.5 feet.
EXAMpLE B:
If the vertical dimension from the floor of the unit is
6.5 feet, the horizontal run to the outer wall flange must
not exceed 14.5 feet.
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.
Note:
On vertical venting the first elbow does not get
counted.
Note:
LP and Nat gas models can be top vented.
Note:
Flue heat shield must be installed for venting
applications with less than two feet of vertical pipe off
the top of the fireplace.
Figure 19
Acceptable vertical and horizontal vent run.
(40' maximum vertical and 20' maximum horizontal)
Unacceptable vertical and horizontal vent run.
TOP EXIT - VERTICAL AND HORIZONTAL TERMINATION
(DIMENSIONS IN FEET)
VER
TICAL
DIMENSION
FROM
THE
BOTT
OM
OF
THE
UNIT
TO
THE
CENTER
OF
THE
FLUE
OUTLET
WITH
VER
TICAL
OR
HORIZONT
AL
TERMINA
TION
CAPS
TOP VENT
CONNECTION
HORIZONTAL RUN
FLUE HEAT
SHIELD
REQUIRED
venting Graph (Dimensions in Feet)
vENTING FIREpLACE - TOp (Lp & NAT MODELS)
