14
Figure 9. Venting with three 90° elbows
VENTING WITH THREE (3) 90° ELBOWS
V (FT.)
H (FT.)
3' MINIMUM (914 mm)
6' MAXIMUM (1.9 m)
4' MINIMUM (1.2 m)
8' MAXIMUM (2.4 m)
5' MINIMUM (1.6 m)
10' MAXIMUM (3.1 m)
RATIO V TO H = 1:2
V + V
1
+ H + H
1
= 30’ MAXIMUM (9.3m)
H + H
1
= 20’ MAXIMUM (6.2m)
H
= 10’ MAXIMUM (3.1m)
VENTING WITH THREE (3) 90° ELBOWS
V (FT.)
H + H
1
(FT.)
3' MINIMUM (914 mm)
6' MAXIMUM (1.9 m)
4' MINIMUM (1.2 m)
8' MAXIMUM (2.4 m)
5' MINIMUM (1.6 m)
10' MAXIMUM (3.1 m)
6' MINIMUM (1.9 m)
12' MAXIMUM (3.6 m)
V + V
1
+ H + H
1
= 30’ MAXIMUM (9.3 m)
H + H
1
= 20’ MAXIMUM (6.2 m)
RATIO V TO H + H
1
= 1:2
NOTE:
SRV570-290 Heat
Shield is required above
elbow if clearance is less
than 4 inches (102mm).
H
1
H
V
1
V
V
1
H
1
H
V
