RECOMMENDED FLUE HEIGHT
Once the correct chimney size has been determined, there are two factors which can be compensated for when
calculating the optimum height of the system - elevation and chimney layout. The higher the elevation, the greater
the chimney height required to provide the same draft as an installation a sea level. The more complex the chim-
ney layout (the more tees, elbows, etc. in the system) the greater the chimney height required to provide the same
draft as a straight up system. The table on the right suggests the minimum height required to insure adequate
draft under a variety of conditions.
Fireplace opening
42” W. by 30” H.
Chimnet height 20’
Chimney Ø 12”
Elevation Above
Sea Level (feet)
Number of elbows
0
2 X 15° 2 X 30° 2 X 45° 4 X 15° 4 X 30° 4 X 45° 1.
2.
0-1000
1000-2000
2000-3000
3000-4000
4000-5000
5000-6000
6000-7000
7000-8000
8000-9000
9000-10000
12
12 ½
13
13 ½
14
14 ½
15
15 ½
16
16 ½
13
13 ½
14
14 ½
15
15 ½
16
16 ½
17
17 ½
15
15 ½
16
17
17 ½
18
18 ½
19
20
20 ½
16
16 ½
17
18
18 ½
19
20
20 ½
21
22
14
14 ½
15
15 ½
16
17
17 ½
18
18 ½
19
18
19
19 ½
20
21
21 ½
22 ½
23
24
24 ½
20
20 ½
21 ½
22 ½
23
24
25
25 ½
26 ½
27
18
19
19 ½
20
21
21 ½
22 ½
23
24
24 ½
20
21
21 ½
22 ½
23
24
25
25 ½
26 ½
27
Minimum Recommended Flue Height
from the flue connection on the appliance (feet)
No more than two offsets (four elbows) allowed
1.
This column shows the height required for a rear vented stove run 18” horizontally into a tee
2.
This column shows the height required for a top vented stove with a 90° degree elbow and an
18” horizontal run into a tee
T
O
T
A
L
CHIMNEY
HEIGHT
HEIGHT, H
WIDTH, W
RIS Owner's Manual
ICC Chimney
6
