Napoleon GD34-1NT Installation And Operating Instructions Manual page 11

(H
T
Simple venting confi gurations
FIGURE 13
See graph to determine the required
vertical rise V
for the required horizontal
T
run H
.
T
REQUIRED
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 zero 90° elbows
the following formulas apply:
Formula 1: H < V
T
Formula 2: H + V
T T
Example 6:
Example 3:
90°
FIGURE 14
V
1
VERTICAL TERMINATION
) < (V )
T
T
< 40 feet
90°
H
2
V
H
2
1
90°
90°
V
= 5 ft
1
V
= 6 ft
2
V
= 10 ft
3
V = V + V
T 1
H
= 8 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
= 18.6 + 21 = 39.6 ft
T T
H
Formula 1:
T
18.6 < 21
H
Formula 2:
T
39.6 < 40
Since both formulas are met, this vent confi guration is
acceptable.
Simple venting confi gurations
H
T
See graph to determine the required vertical rise V
required horizontal run H
MAXIMUM
VERTICAL
V
R I S E I N
3
FEET
V
T
HORIZONTAL VENT RUN PLUS OFFSET IN FEET
The shaded area within the lines represents acceptable
values for H and V
T
For vent confi gurations requiring more than two 90° elbows
the following formulas apply:
Formula 1: H
Formula 2: H
+ V
= 5 + 6 + 10 = 21 ft
2 3
= 8 + 2.5 = 10.5 ft
2
= 10.5 + 8.1 = 18.6 ft
O
< V
T
+ V < 40 feet
T
(H ) > (V )
T T
FIGURE 15
.
T
.
T
< 3V
T T
+ V < 40 feet
T T
W415-0663 / A / 01.07.08
11
for the
T
H
T