Calculating Vent System Length - CSA W10439665B Instructions D'installation

Concrete Slab Installations - Exhaust Through Wall
B
A
O
N
M
A. Wall cap
B. 6" (15.2 cm) round metal vent
C. 16" (40.6 cm) maximum
D. 6" (15.2 cm) round PVC
sewer pipe
E. 5" to 6" (12.7 cm to 15.2 cm)
transition
F. 6" (15.2 cm) round
metal duct
G. 6" (15.2 cm) round
PVC coupling
H. Concrete slab

Calculating Vent System Length

To calculate the length of the system you need, add the
equivalent feet (meters) for each vent piece used in the system.
Vent Piece
45° elbow
90° elbow
6" (15.2 cm)
wall cap
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) transition
6
D
E
F
C
G
H
I
J
L
K
I. 6" (15.2 cm) round PVC
sewer pipe
J. 6" (15.2 cm) round 90°
PVC sewer pipe elbow
K. Tightly pack gravel or sand
completely around pipe.
L. 30 ft (9.1 m) max.
M. 6" (15.2 cm) round 90°
PVC sewer pipe elbow
N. 6" (15.2 cm) round PVC
coupling
O. 12" (30.5 cm) minimum
6" (15.2 cm) Round
2.5 ft
(0.8 m)
5.0 ft
(1.5 m)
0.0 ft
(0.0 m)
4.5 ft
(1.4 m)
6" (15.2 cm) to 3¹⁄₄" x 10"
(8.3 cm x 25.4 cm) transition
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
to 6" (15.2 cm) 90° elbow
transition
6" (15.2 cm) to 3¹⁄₄" x 10"
(8.3 cm x 25.4 cm) 90° elbow
transition
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
90° elbow
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
flat elbow
3¹⁄₄" x 10" (8.3 cm x 25.4 cm)
wall cap
5" to 6" (12.7 cm to 15.2 cm)
transition
Example vent system
90˚ elbow
2 ft
(0.6 m)
1- 90° elbow = 5 ft (1.5 m)
8 ft (2.4 m) straight = 8 ft (2.4 m)
1 - wall cap = 0 ft (0 m)
System length = 13 ft (3.9 m)
NOTE: Flexible vent is not recommended. Flexible vent creates
back pressure and air turbulence that greatly reduce
performance.
1 ft
(0.3 m)
9.0 ft
(2.7 m)
5.0 ft
(1.5 m)
5.0 ft
(1.5 m)
12.0 ft
(3.7 m)
0.0 ft
(0.0 m)
1 ft
(0.3 m)
wall cap
6 ft (1.8 m)