How To Use The Vent Graph - Monessen Hearth BDV300 Installation And Operating Instructions Manual

TERMINATION CLEARANCES FOR BUILDINGS WITH COMBUSTIBLE
AND NONCOMBUSTIBLE EXTERIORS
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HOW TO USE THE VENT GRAPH

The Vent Graph should be read in conjunction with the following
vent installation instructions to determine the relationship between
the vertical and horizontal dimensions of the vent system.
1. Determine the height of the center of the horizontal vent pipe
exiting through the outer wall. Using this dimension on the
Sidewall Vent Graph below, locate the point intersecting 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 fireplace in
accordance with same.
Example: If the vertical dimension from the floor of the
fireplace is 11' (3.4m) the horizontal run to the face of the
outer wall must not exceed 14' (4.3m).
Example: If the vertical dimension from the floor of the unit
is 7' (2.14m), the horizontal run to the face of the outer
wall must not exceed 8
Sidewall Vent Graph showing the relationship between vertical and
horizontal dimensions for a Direct Vent flue system.
54D0108
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Figure 12 - Allowable Venting Chart
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/ ' (2.6m).
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20"
Horizontal Dimension From the Outside of
Figure 13 - Rear Wall Venting Graph
VENT INSTALLATION
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Dimensions in
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Termination to the Back of the Fireplace
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