Sizing Guide

26 Sizing Guide www.hartandcooley.com
*For EACH 90° turn (tee, elbow), ADD this value to Tabled Height figure to get ACTUAL vertical height required.
GPH x 140,000 = BTUH
Chimney Sizing for Appliances Using Table 9
Example
GIVEN:
• Input is 700,000 BTUH.
• Draft required is 0.04 inches w.c.
• System contains one 90° elbow and one tee.
• Collar size of appliance is 10 inches.
SOLUTION: Find Input 700 (thousand) BTUH in the left
column and 0.04 inches w.c. draft at the top of the table.
Adjacent to the Input column is a column giving multiple
choices of chimney sizes. For a trial, use the flue collar size of
10 inches. Adjacent to the 10-inch size is a figure 3½, which
is explained as the feet that must be added for EACH 90°
turn. Proceed to right from 700 figure, then the 10-inch size
horizontally to the right until it intersects the 0.04 vertical
column. The height shown is 7 feet. There are two 90° turns
required (the 90° elbow and tee given); therefore, 7 feet must
be added (2 times 3½) to the 7 feet given in the table. The
required chimney height is then 14 feet (7+7). A larger size
chimney will result in a lower total height if such is required.
Table 9
0.04 0.05 0.06 0.07 0.08 0.09 0.10
6 1 6 7½ 9 10½ 12 13½ 15
7 1 5½ 7 8½ 10 11½ 12½ 14
8 1 5½ 7 8 9½ 11 12 13½
6 2 6½ 8½ 10 11½ 13½ 15 16½
7 1½ 6½ 8 9½ 11 12½ 14 16
8 1 6 7½ 9 10½ 12 13½ 15
10 1 6 7 8½ 10 11½ 13 14½
6 4½ 7½ 9½ 11 12½ 15 16½ 18½
7 3 7 8½ 10 12 13½ 15 17
8 1½ 6½ 8 9½ 11 13 14½ 16
10 1 6 7½ 9 10½ 12 13½ 15
7 4½ 7½ 9½ 11 12½ 15 16½ 18½
8 3 7 8½ 10 12 13½ 15 17
10 1½ 6½ 8 9½ 11 13 14½ 16
12 1 6 7½ 9 10½ 12 13½ 15
8 4 7½ 9 11 12½ 14½ 16½ 18
10 2 6½ 8 9½ 11½ 13 14½ 16
12 1 6 7½ 9 10½ 12 13½ 15
14 1 6 7½ 8½ 10 11½ 13 14½
10 2½ 7 8½ 10 12 13½ 16 17
12 1½ 6½ 8 9½ 11 12½ 14 15½
14 1 6 7½ 9 10½ 12½ 14 15½
10 3½ 7 9 10½ 12½ 14 16 17½
12 1½ 6½ 8 9½ 11 13 14½ 16
14 1 6 7½ 9 10½ 12½ 14 15½
10 4½ 7½ 9½ 11 13 14½ 16½ 18
12 2½ 7 8½ 10 11½ 13½ 15 16½
14 1 6½ 8 9½ 11 12½ 14 15½
12 3 7 8½ 10 12 14 15½ 17
14 2 6½ 8 9½ 11½ 13 14½ 16
12 3½ 7 9 10½ 12½ 14 16 17½
14 2 6½ 8½ 9½ 11½ 13 14½ 16
12 4 7½ 9 10½ 12½ 14½ 16 18
14 2 6½ 8½ 10 11½ 13½ 15 16½
12 4½ 7½ 9½ 11 13 15 16½ 18½
14 2½ 7 8½ 10 12 13½ 15½ 17
1300 14 3 7 9 10½ 12 14 15½ 17½
1400 14 3½ 7 9 10½ 12½ 14 16 17½
1500 14 4 7½ 9 11 12½ 14½ 16½ 18
Chimney Sizing for Lower Efficiency Oil-Fired Appliances
(600°F temperature rise at 9% CO
2
)
Minimum Chimney Height, Ft.
90° Turns
Equiv. Ft.*
Chimney
Diameter
1200
500
600
700
800
900
1000
1100
100
200
300
400
Input
BTUH
X 1000
Chimney Draft Specified, inches w.c.
Model TLC All-Fuel Chimney System