14
EN
Simple venting confi guration (only one 45° and 90°
elbow)
For vent confi gurations requiring more than one 45° elbow and 90° elbow, the following formulas
apply:
H
Formula 1: H
4
Formula 2: H
Example:
V
= 4 FT (1.2m)
1
V
= 1.5 FT (0.5m)
2
V
= V
+ V
T
1
H
= 2 FT (0.6m)
1
H
= 1 FT (0.3m)
2
H
= 1 FT (0.3m)
3
90°
H
= 1.5 FT (0.5m)
4
H
= H
+ H
R
1
H
= .03 (one 45° elbow + four 90° elbows - 135°) = .03 (405 - 135°) = 8.1 FT (2.5m)
O
H
= H
+ H
T
R
V
H
+ V
= 13.6 FT (4.2m) + 5.5 FT (1.7m) = 19.1 FT (5.8m)
1
T
T
Formula 1:
45°
H
1
90°
Formula 2:
Since both formulas are met, this vent confi guration is acceptable.
W415-2207 / A / 08.28.17
All manuals and user guides at all-guides.com
The shaded area within the lines represents acceptable values for H
90°
< 4.2 V
90°
T
T
H
+ V
< 24.75 feet (7.5m)
1
T
T
90°
V
REQUIRED
1
VERTICAL
RISE IN FEET
45°
(METERS) V
= 4 FT (1.2m) + 1.5 FT (0.5m) = 5.5 FT (1.7m)
2
H
2
+ H
+ H
= 2FT (0.6m) + 1FT (0.3m) + 1FT (0.3m) + 1.5FT (0.5m) = 5.5 FT (1.7m)
2
3
4
= 5.5 FT (1.7m) + 8.1 FT (2.5m) = 13.6 FT (4.2m)
O
H
< 4.2FT (1.3m) V
T
T
4.2FT (1.3m) V
= 4.2 FT (1.3m) x 5.5 FT (1.7m)= 23.1 FT (7m)
T
13.6 FT (4.2m) < 23.1 FT (7M)
H
+ V
< 24.75 FT (7.5m)
T
T
19.1 FT (5.8m) < 24.75 FT (7.5m)
(H
) > (V
)
T
T
See graph to determine the required vertical
rise V
REQUIRED
VERTICAL RISE
IN INCHES
(METERS) V
H
T must be > 24" (610mm)
90°
H
H
4
3
V
2
40 (12.2)
H
39 (11.9)
2
30 (9.1)
20 (6.1)
T
10 (3.1)
0
2.5
(0.8)
HORIZONTAL VENT RUN PLUS OFFSET IN
45°
H
1
for the required horizontal run H
T
150 (3.81)
150 (3810)
147 (3.73)
147 (3733.8)
100 (2.54)
100 (2540)
T
57 (1447.8)
57 (1447.8)
50 (12.7)
50 (1270)
24" (610mm)
MIN.
0
0
5
5
10
(1.5)
(1.5)
(3.1)
(3.1)
12.5
(3.8)
HORIZONTAL VENT RUN PLUS
OFFSET IN FEET (METERS) H
90°
H
90°
3
H
1
H
2
90°
V
1
45°
5
7.5
10
12.5
15
(1.5)
(2.3)
(3.1)
(3.8)
(4.6)
90°
H
2
FEET (METERS) H
T
V
1
90°
16.5_2A
.
T
15
10
15
20
20
(4.6)
(4.6)
(6.1)
(6.1)
12.5
(3.8)
T
and V
T
T
90°
40 (12
39 (11.9)
H
4
V
2
30 (9
REQUIRED
VERTICAL
20 (6
RISE IN FEET
(METERS) V
T
10 (3
17.5
20
(5.3)
(6.1)
90°
45°
H
1
V
V