Top Exit Horizontal Termination - Napoleon GD36NTR Installation And Instruction Manual

3.8

TOP EXIT HORIZONTAL TERMINATION

Simple venting configuration
(only one 90° elbow)
For vent configurations requiring more than one 90° elbow, the following formulas apply:
Formula 1: H < V
T T
Formula 2: H + V
T T
Example 1:
V = 3 FT (0.9m)
1
V = 8 FT (2.4m)
2
V = V + V = 3FT (0.9m) + 8FT (2.4m) = 11FT (3.4m)
T 1 2
H = 2.5 FT (0.8m)
1
H = 2 FT (0.6m)
2
H = H + H = 2.5FT (0.8m) + 2FT (0.6m) = 4.5 FT (1.4m)
R 1 2
H = .03 (three 90° elbows - 90°) = .03 (270° - 90°) = 5.4 FT (1.6m)
O
H = H + H = 4.5FT (1.4m) + 5.4FT (1.6m) = 9.9 FT (3m)
T R O
H + V = 9.9FT (3m) + 11FT (3.4m) = 20.9FT (6.4m)
T T
Formula 1: H
9.9FT (3m) < 11FT (3.4m)
Formula 2: H
20.9FT (6.4m) < 40 FT (12.2m)
Since both formulas are met, this vent configuration is acceptable.
See graph to determine the required vertical rise V
< 40 feet (12.2m)
< V
T T
+ V < 40 FT (12.2m)
T T
(H ) < (V )
T T
40 (12.2)
39 (11.9)
30 (9.1)
REQUIRED
VERTICAL
20 (6.1)
RISE IN FEET
(METERS)V
T
10 (3.1)
0 2.5
(0.8)
HORIZONTAL VENT RUN PLUS OFFSET IN
40 (12.2)
39 (11.9)
30 (9.1)
REQUIRED
VERTICAL
20 (6.1)
RISE IN FEET
(METERS)V
T
10 (3.1)
0 2.5
(0.8)
HORIZONTAL VENT RUN PLUS OFFSET IN
The shaded area within the lines represents
for the required horizontal run H
T
5 7.5 10 12.5 15
(1.5) (2.3) (3.1) (3.8) (4.6)
FEET (METERS) H
T
5 7.5 10 12.5 15
(1.5) (2.3) (3.1) (3.8) (4.6)
FEET (METERS) H
T
acceptable values for H and V
T
90°
V
2
90°
H
90°
1
V
1
16.2B
W415-0773 / F / 08.26.13
17
EN
.
T
GD36
17.5 20
(5.3) (6.1)
BGD36
17.5 20
(5.3) (6.1)
T
H
2