Top Exit Horizontal Termination - Napoleon B30NTRE-1 Installation And Operating Instructions Manual

3.8

TOP EXIT 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:
V
= 3 FT (0.9m)
1
V
= 8 FT (2.4m)
2
V = V + V
= 3 FT (0.9m ) + 8 FT (2.4m) = 11 FT (3.4m)
T 1 2
H
= 2.5 FT (0.8m)
1
H
= 2 FT (0.6m)
2
H = H + H
= 2.5 FT (0.8m) + 2 FT (0.6m) = 4.5 FT (1.4m)
R 1 2
H
= .03 (three 90° elbows - 90°) = .03 (270° - 90°) = 5.4 FT (1.7m)
O
H = H + H
= 4.5 FT (1.4m) + 5.4 FT (1.6m) = 9.9 FT (3m)
T R O
H + V
= 9.9 FT (3m) + 11 FT (3.4m) = 20.9 FT (6.4m)
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.
REQUIRED
REQUIRED
VERTICAL
VERTICAL
RISE IN FEET
RISE IN FEET
(METERS)V
(METERS)V
REQUIRED
VERTICAL
RISE IN FEET
(METERS)V
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 for the required horizontal run H
T
40 (12.2)
40 (12.2)
39 (11.9)
39 (11.9)
30 (9.1)
30 (9.1)
20 (6.1)
20 (6.1)
40 (12.2)
T
39 (11.9)
T
10 (3.1)
10 (3.1)
30 (9.1)
0
2.5 5
0
2.5 5 7.5
(0.8) (1.5)
20 (6.1)
(0.8) (1.5) (2.3)
HORIZONTAL VENT RUN PLUS OFFSET IN
HORIZONTAL VENT RUN PLUS OFFSET IN
T FEET (METERS) H
FEET (METERS) H
10 (3.1)
The shaded area within the lines represents
acceptable values for H
0
2.5 5 7.5
(0.8) (1.5) (2.3)
HORIZONTAL VENT RUN PLUS OFFSET IN
FEET (METERS) H
7.5 10 12.5 15 17.5
10 12.5 15 17.5
(2.3) (3.1) (3.8) (4.6) (5.3)
(3.1) (3.8) (4.6) (5.3)
T
T
and V
10 12.5 15 17.5 20
T T
(3.1) (3.8) (4.6) (5.3) (6.1)
90°
90°
H
T
V
V
2
2
90°
H
2
90°
90°
V
H
90° H
2
1
90°
1
V
V
1
90°
1
H
90°
1
V
1
16.1B
W415-1768 / 06.12.17
17
EN
.
T
20
20
(6.1)
(6.1)
H
2
2