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Heat & Glo • Crescent II • 2083-902 Rev. G • 9/05
11
5
Vent Information and Diagrams
Fire Hazard.
Explosion Risk.
Asphyxiation Risk.
Do NOT connect this gas appliance to a
chimney flue serving a separate solid-fuel or
gas burning appliance.
• Vent this appliance directly outside.
• Use separate vent system for this
appliance.
May impair safe operation of this appliance or
other appliances connected to the flue.
WARNING
CAUTION
ALL vent configuration specifications MUST be followed.
• This product is tested and listed to these
specifications.
• Appliance performance will suffer if specifications are
not followed.
B. Use of Elbows
Diagonal runs have both vertical and horizontal vent as-
pects when calculating the effects. Use the rise for the ver-
tical aspect and the run for the horizontal aspect (see Fig-
ure 5.1).
Two 45
0
elbows may be used in place of one 90
0
elbow. On
45
0
runs, one foot of diagonal is equal to 8.5 inches hori-
zontal run and 8.5 inches vertical run. A length of straight
pipe is allowed between two 45
0
elbows (see Figure 5.1).
Figure 5.1
A. Vent Table Key
The abbreviations listed in this vent table key are used in
the vent diagrams.
Symbol Description
V1
First section (closest to appliance) of vertical length
V2
Second section of vertical length
H1
First section (closest to appliance) of horizontal length
H2
Second section of horizontal length
C. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards.
1. Pipe measurements are shown using the effective length
of pipe (see Figure 5.2).
2. Measurements are made from the appliance outer wrap,
not from the standoffs.
3. Horizontal terminations are measured to the outside
mounting surface (flange of exterior firestop) (see Fig-
ure 4.1).
4. Vertical terminations are measured to bottom of termi-
nation cap.
V
ERTICAL
HORIZONTAL
Figure 5.2 DVP Pipe Effective Length
Effective
Height/Length
DVP4 4
DVP6 6
DVP12 12
DVP24 24
DVP36 36
DVP48 48
DVP6A 3 to 6
DVP12A 3 to 12
DVP12MI 3 to 12
DVP24MI 3 to 24
Length/
Inches
Pipe
DVP PIPE