Napoleon Tureen GD82NT-T Installation And Operation Instructions Manual page 10

10
when (H ) > (V )
T T
FIGURE 12
Simple venting confi gurations
See graph to determine the required vertical rise V
required horizontal run H
MAXIMUM
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
For vent confi gurations requiring more than two 90° elbow
(top exit) or one 90° elbow (rear exit), the following formulas
apply:
Formula 1: H < 3V
T
Formula 2: H + V
T
W415-0666 / 01.28.08
VERTICAL TERMINATION
T
.
T
T
< 40 feet
T
90°
V
1
Example 5:
V = 2 ft
1
V = 1 ft
2
V = 1.5 ft
3
for the
V = V + V
T 1
H = 6 ft
1
H = 2 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 = 16.1 + 4.5 = 20.6 ft
T T
Formula 1: H
T
H
16.1 > 13.5
T
Since this formula is not met, this vent confi guration is
unacceptable.
Formula 2: H
T
20.6 < 40
Since only formula 2 is met, this vent confi guration
is unacceptable and a new fi replace location or vent
confi guration will need to be established to satisfy both
formulas.
90°
V
H
2
1
90°
FIGURE 13
+ V = 2 + 1 + 1.5 = 4.5 ft
2 3
= 6 + 2 = 8 ft
2
= 8 + 8.1 = 16.1 ft
O
< 3V
T
3V = 3 x 4.5 = 13.5 ft
T
+ V < 40 feet
T
V
3
H
2
90°