Empire Comfort Systems DVP36DP31 Series, Installation Instructions And Owner'S Manual, Page: 17 / 76

31451-2-1013 Page 17
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.
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 NOTICE : 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. These elbows can be
installed in either the vertical or horizontal run.
NOTICE : On vertical venting the first elbow does not
get counted.
NOTICE
: LP and Nat gas models can be top vented.
NOTICE : Flue heat shield must be installed for venting
applications with less than two feet of vertical pipe off
the top of the fireplace.
Figure 21
Acceptable vertical and horizontal vent run.
(40' maximum vertical and 20' maximum horizontal)
Unacceptable vertical and horizontal vent run.
Venting Graph (Dimensions in Feet)
VENTING FIREPLACE - TOP (LP & NAT MODELS)