Horizontal Termination - Napoleon HDX40NT-1 Mode D'emploi

3.8

HORIZONTAL TERMINATION

Simple venting confi guration (only one 90° elbow)
For vent confi gurations requiring more than one 90° elbow, the following formulas apply:
Formula 1: H < V
T
Formula 2: H + V
T
Example 1:
= 3 FT (0.9m)
V
1
= 8 FT (2.4m)
V
2
= V + V = 3 FT (0.9m) + 8 FT (2.4m) = 11 FT (3.4m)
V
T 1 2
= 2.5 FT (0.8m)
H
1
= 2 FT (0.6m)
H
2
= H + H = 2.5 FT (0.8m) + 2 FT (0.6m) = 4.5 FT (1.4m)
H
R 1 2
= .03 (three 90° elbows - 90°) = .03 (270° - 90°) = 5.4 FT (1.7m)
H
O
= H + H = 4.5 FT (1.4m) + 5.4 FT (1.7m) = 9.9 FT (3m)
H
T R O
+ V = 9.9 FT (3m) + 11 FT (3.4m) = 20.9 FT (6.4m)
H
T T
Formula 1: H
9.9 FT (3m) < 11 FT (3.4m)
Formula 2: H
20.9 FT (6.4m) < 40 FT (12.2m)
Since both formulas are met, this vent confi guration is acceptable.
T
< 40 feet (12.2m)
T
< V
T T
+ V < 40 FT (12.2m)
T T
(H ) < (V )
T T
See graph to determine the required vertical
rise V
T
40 (12.2)
39 (11.9)
REQUIRED
30 (9.1)
VERTICAL
RISE IN
20 (6.1)
FEET
(METERS)V
10 (3.1)
T
0 2.5
(0.8)
HORIZONTAL VENT RUN PLUS OFFSET IN
The shaded area within the lines represents
acceptable values for H
for the required horizontal run H
5 7.5 10 12.5 15
(1.5) (2.3) (3.1) (3.8) (5.6)
FEET (METERS) H
T
and V
T
90°
V
2
90°
H
90°
1
V
1
16.12A
W415-1349 / A / 03.18.15
13
EN
.
T
17.5 20
(5.3) (6.1)
T
H
2