Napoleon Vittoria GD19N Installation And Operation Instructions Manual page 14

14
TOP OR REAR EXIT VERTICAL TERMINATION
(H
ple venting confi gurations
See graph to determine the required vertical rise V
required horizontal run H
35
30
REQUIRED
VERTICAL
RISE IN
FEET V
20
T
17.5
10
3
0
HORIZONTAL VENT RUN PLUS OFFSET IN FEET H
The shaded area within the lines represents acceptable
values for H and V .
T T
For vent confi gurations requiring more than zero 90° elbow
(top exit) or one 90° elbow (rear exit), the following formulas
apply:
Formula 1: H < V
T
Formula 2: H + V
T
W415-0612 / C / 01.25.08
) < (V )
T T
FIGURE 16
T
.
T
5 10 15 17.5
T
< 35 feet
T
Example 6:
FIGURE 17
V
V
= 3 ft
1
for the
V
= 6 ft
2
V
= 8 ft
3
V = V + V
T 1
H
= 2 ft
1
H
= 2.5 ft
2
H = H + H
R 1
H
= .03(four 90° elbows - 90°)
O
= .03(90 + 90 + 90 + 90 - 90) = 8.1 ft
H = H + H
T R
H + V
= 12.6 + 17 = 29.6 ft
T T
H
Formula 1:
T
12.6 < 17
H
Formula 2:
T
29.6 < 35
Since both formulas are met, this vent confi guration is
acceptable.
20
T
90°
90°
H
V
2
H
1
1
90°
+ V
= 3 + 6 + 8 = 17 ft
2 3
= 2 + 2.5 = 4.5 ft
2
= 4.5 + 8.1 = 12.6 ft
O
< V
T
+ V < 35 feet
T
V
3
2
90°