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18
Vertical Vent Terminations (Dual Pipe)
Horizontal terminations should be as shown in “Standard
Horizontal Vent Terminations (Dual Pipe)” illustration. Refer to
“Termination Locations” in this section for location restrictions.
■
A 2
³⁄₈
" (6.1 cm) diameter wall penetration is required for 2"
(5.1 cm) diameter pipe.
■
A 3" (7.6 cm) diameter hole is required for a 2
¹⁄₂
" (6.4 cm)
pipe.
■
A 3
¹⁄₂
" (8.9 cm) diameter hole is required for 3" (7.6 cm)
diameter pipe.
■
To secure the pipe passing through the wall and prohibit
damage to the piping connections, a coupling should be
installed on either side of the wall and solvent cemented to a
length of pipe connecting the 2 couplings.
■
The length of pipe should be the wall thickness plus the
depth of the socket fittings to be installed on the inside and
outside of the wall.
■
The wall penetration should be sealed with silicone caulking
material.
Standard Horizontal Vent Terminations (Dual Pipe)
Alternate Horizontal Vent Terminations (Dual Pipe)
Standard Horizontal Terminations (Dual Pipe)—Above
Highest Anticipated Snow Level
A. 12" (30.5 cm) minimum
B. Combustion air intake pipe
C. 90º medium radius elbows
D. Tee
E. Vent/flue pipe
F. 24" (61 cm) maximum, 3" (7.6 cm)
minimum
G. Screen
H. 12" (30.5 cm) minimum to roof or
highest anticipated snow level
E
D
C
B
G
F
A
H
E
C
B
G
F
A
H
A. 24" (61 cm) maximum, 3"
(7.6 cm) minimum
B. 12" (30.5 cm) minimum from
wall
C. Tee or 90º elbow turned
down
D. 12" (30.5 cm) minimum to roof or
highest anticipated snow level
E. Combustion air intake
F. Screen
G. 90º medium radius elbow
A. 90º medium radius elbow
B. Flue/vent pipe
C. 12" (30.5 cm) minimum
from wall
D. Screen
E. 12" (30.5 cm) minimum to roof or
highest anticipated snow level
F. Combustion air intake
G. 24" (61 cm) maximum, 3" (7.6 cm)
minimum
H. 24" (61 cm) maximum radius
A. Support straps
B. 24" (61 cm) maximum, 3"
(7.6 cm) minimum
C. 12" (30.5 cm) minimum from wall
D. Tee or 90º elbow turned down
E. 12" (30.5 cm) minimum to roof or
highest anticipated snow level
F. Screen
G. 90º medium radius elbow
H. Combustion air intake
F
C
E
A
G
D
D
B
A
A
B
D
F
C
H
G
E
H
G
F
D
A
A
C
B
E
E