42603-4-0421
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VENTING MUST
TERMINATE IN
THIS AREA
VER
TICAL
RISE
ABO
VE FIREPLACE IN FEET
24”
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HORIZONTAL RUN IN FEET
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Figure 9a - DVP20MS
Figure 9b - DVP30MS
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VENTING MUST
TERMINATE IN
THIS AREA
VER
TICAL
RISE
ABO
VE FIREPLACE IN FEET
28”
0
1
2
3
4
5
6
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8
9 10 11 12 13 14
36
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40
HORIZONTAL RUN IN FEET
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LP
NAT
To Use the Vent Graph
EXAMPLE A:
If the vertical rise from the appliance outlet is 21 feet, the horizontal
run to the outer wall flange of the vent termination must not exceed
4 feet with one 90° elbow.
EXAMPLE B:
If the vertical rise from the appliance outlet is 14 feet, the horizontal
run to the outer wall flange of the vent termination must not exceed
11 feet with one 90° elbow.
VENTING STOVE (
CONT'D
)
SPECIAL NOTE:
For each 45 degree elbow installed in the horizontal
run, the length of the horizontal run MUST be reduced by 18 inches
(457.2 mm). This does not apply if the 45 degree elbows are installed
on the vertical rise of the vent system.
Example:
According to the chart the maximum horizontal run is 12
feet and if two 45 degree elbows are required in the horizontal run
it must be reduced to 9 feet.
The maximum number of 45 degree elbows permitted per side
wall installation is two. These elbows can be installed in either the
vertical rise or horizontal run.