16
7022-514C
July 7, 2015
CASTILE INSERT
H. Pellet Venting Charts
The maximum horizontal venting allowed with no vertical vent-
ing attached is 48 inches (1219mm) including one 90° elbow
or two 45° elbows. This is our recommended horizontal vent-
ing installation. Addition of any horizontal venting beyond 48
inches (1219mm) Hearth & Home Technologies strongly rec-
ommends a minimum of 60 inches (1524mm) of additional verti-
cal vent. Horizontal sections of vent pipe should have a 1/4 inch
(6.35mm) rise per foot.
Hearth & Home Technologies recommends any installation
requiring more than two 90° elbows, or more than 15 feet (4.5m)
of venting to use 4 inch (102mm) vent.
Figure 16.1
Fire Risk.
• Only LISTED venting components may be used.
• NO OTHER vent components may be used.
Substitute or damaged vent components may impair
safe operation.
WARNING
NOTICE:
These are guidelines for successful venting of your pellet appliance. The more vertical rise you can obtain in
your system, the better it will perform. Horizontal vent runs can accumulate ash and will need to be cleaned more often.
Try to keep them as short as possible.
ONE 90º ELBOW
Total
Minimum
Vertical
Vent
Diameter
4
0
3
5
5
3
6
6
3
7
7
3
8
8
4
9
9
4
10
10
4
11
11
4
TWO 90º ELBOWS
Total
Minimum
Vertical
Vent
Diameter
2
5
3
3
6
3
4
7
3
5
8
3
6
9
3
THREE 90º ELBOWS
Total
Minimum
Vertical
Vent
Diameter
2
11
4
3
12
4
45° elbow is equivalent to 1 foot of straight pipe
90° elbow is equivalent to 3 feet of straight pipe
Minimum Vertical Vent for One Elbow
0
5
10
15
20
0
5
10
15
20
Horizontal Run, (ft)
M
in
imu
m V
e
rt
ic
a
l R
is
e
(ft)
Minimum Vertical Vent for One Elbow
Figure 16.3
Minimum Vertical Vent for Three Elbows
0
5
10
15
20
25
0
2
4
6
8
10
12
Length of Horizontal Sections (ft)
M
in
imu
m V
e
rt
ic
a
l R
is
e
(ft)
Minimum Vertical Vent for Three Elbows
Figure 16.2
Minimum Vertical Vent for Two Elbows
0
5
10
15
20
0
5
10
15
Length of Horizontal Sections, (ft)
M
in
imu
m V
e
rt
ic
a
l
R
is
e
, (ft)
Minimum Vertical Vent for Two Elbows