7083-171B • July 23, 2013 (877) 427- 3316
26
C. Pellet Venting Charts
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
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) requires a minimum 60 inches (1524mm) of
additional vertical vent. Horizontal sections of vent pipe should
have a 1/4 inch (6.35mm) rise per foot.
Pelpro recommends any installation requiring more than two
90° elbows, or more than 15 feet (4.5m) of venting to use 4 inch
(102mm) vent.
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.
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
im
um
V
er
tic
al R
is
e
(ft
)
Horizontal Run (FT)
Minimum Vertical Vent for One Elbow
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
im
um
V
er
tic
al R
is
e
(ft
)
Minimum Vertical Vent for Three Elbows
Length of Horizontal Sections (FT)
Minimum Vertical Vent for Two Elbows
0
5
10
15
20
0
5
10
15
Length of Horizontal Sections, (ft)
M
in
im
um
V
er
tic
al
R
is
e, (
ft)
Minimum Vertical Vent for Two Elbows
Length of Horizontal Sections (FT)
ONE 90° ELBOW
Total
Horizontal
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
12
12
4
13
13
4
14
14
4
15
15
4
16
16
4
17
17
4
18
18
4
19
19
4
TWO 90° ELBOWS
Total
Horizontal
Minimum
Vertical
Vent
Diameter
2
5
3
3
6
3
4
7
3
5
8
3
6
9
3
7
10
4
8
11
4
9
12
4
10
13
4
11
14
4
12
15
4
13
16
4
14
17
4
15
18
4
THREE 90° ELBOWS
Total
Horizontal
Minimum
Vertical
Vent
Diameter
2
11
4
3
12
4
4
13
4
5
14
4
6
15
4
7
16
4
8
17
4
9
18
4
10
19
4
11
20
4
