Horizontal Termination - Napoleon Tureen GD82NT-T Installation And Operation Instructions Manual

DEFINITIONS
for the following symbols used in the venting calculations
and examples are:
> - greater than
> - equal to or greater than
< - less than
< - equal to or less than
H - total of both horizontal vent lengths (H
T
(H ) in feet
O
H - combined horizontal vent lengths in feet
R
H - offset factor: .03(total degrees of offset - 90°*) in
O
feet
V - combined vertical vent lengths in feet
T
<
When (H ) (V )
T T
Simple venting confi guration (only one 90° elbow)
FIGURE 5
when (H ) < (V )
T T
Simple venting confi guration (only one 90° elbow)
VERTICAL
RISE IN
FEET
V
T
HORIZONTAL VENT RUN PLUS OFFSET IN FEET
The shaded area within the lines represents acceptable
values for H and V
T T
) and offsets
R

HORIZONTAL TERMINATION

.
ELBOW VENT LENGTH VALUES
1°
15°
30°
45°
90°*
* the fi rst 90° offset has a zero value and is shown in the
formula as -90°
See graph to determine the required vertical rise V
required horizontal run H
For vent confi gurations requiring more than one 90° elbow,
the following formulas apply:
Formula 1: H
Formula 2: H
T
FIGURE 6
Example 1:
V = 3 ft
1
V = 8 ft
2
V = V + V = 3 + 8 = 11 ft
T 1 2
H = 2.5 ft
1
H = 2 ft
2
H = H + H = 2.5 + 2 = 4.5 ft
R 1 2
H
H = .03 (three 90° elbows - 90°) = .03(270° - 90°) = 5.4 ft
T
O
H = H + H = 4.5 + 5.4 = 9.9 ft
T R O
H + V = 9.9 + 11 = 20.9 ft
T T
Formula 1: H < V
T
9.9 < 11
Formula 2: H + V
T
20.9 < 40
Since both formulas are met, this vent confi guration is
acceptable.
Feet Inches
0.03 0.5
0.45 6.0
0.9 11.0
1.35 16.0
2.7 32.0
.
T
< V
T T
+ V < 40 feet
T
90°
V
2
90°
H
1
90°
V
1
T
< 40 feet
T
W415-0666 / 01.28.08
7
for the
T
H
2