10
MODEL BTN-250
Input: 250,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 6 inches
6
8
10
15
20
30
50
100
Input Btuh/hr
Rise
Vent Connector Diameter (Inches)
250,000
1 Ft
8
8
7
7
7
6
6
6
250,000
2 Ft
7
7
7
7
6
6
6
6
250,000
3 Ft
7
7
7
7
6
6
6
6
Number
Combined Input
BTN 250 of Heaters
in Thousands of Btu/hr
Manifold and Common Vent Diameter (Inches)
2
500,000
9
9
9
8
8
7
7
7
3
750,000
12
12
10
10
10
9
8
8
4
1,000,000
14
14
12
12
10
10
9
9
MODEL BTN-275
Input: 275,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 6 inches
6
8
10
15
20
30
50
100
Input Btu/hr
Rise
Vent Connector Diameter (Inches)
275,000
1 Ft
8
8
7
7
6
6
6
6
275,000
2 Ft.
8
8
7
7
6
6
6
6
275,000
3 Ft
7
7
7
7
6
6
6
6
Number of
Combined Input
BTN 275 Heaters
in Thousands of Btu/hr
Manifold and Common Vent Diameter (Inches)
2
550,000
10
9
9
8
8
8
7
7
3
825,000
12
12
12
10
9
9
8
8
4
1,100,000
14
14
14
12
12
10
9
9
MODEL BTN-310
Input: 310,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 6 inches
6
8
10
15
20
30
50
100
Input Btu/hr
Rise
Vent Connector Diameter (Inches)
310,000
1 Ft.
9
8
8
8
7
7
6
6
310,000
2 Ft.
8
8
8
7
7
7
6
6
310,000
3 Ft.
8
8
8
7
7
7
6
6
Number of
Combined Input
BTN 310 Heaters
in Thousands of Btu/hr
Manifold & Common Vent Diameter
2
620,000
10
10
9
9
8
8
7
7
3
930,000
14
12
12
12
10
9
9
8
4
1,240,000
14
14
14
12
12
12
10
9
MODEL BTN-366, 400
Input: 366,000, 399,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 6 inches
6
8
10
15
20
30
50
100
Input Btu/hr
Rise
Vent Connector Diameter (Inches)
366,000
1 Ft
9
9
9
8
8
8
8
8
399,000
1 Ft
10
9
9
9
8
8
8
8
366,000
2 Ft
9
9
8
8
8
8
8
8
399,000
2 Ft
9
9
9
8
8
8
8
8
366,000
3 Ft
9
8
8
8
8
8
8
8
399,000
3 Ft
9
9
8
8
8
8
8
8
Number of
Combined Input
BTN Heaters
in Thousands of Btu/hr
Manifold & Common Vent Diameter (Inches)
2
732,000
12
10
10
9
9
9
8
8
798,000
12
12
10
10
9
9
8
8
3
1,098,000
14
14
14
12
12
10
9
9
1,197,000
14
14
14
12
12
10
10
9
4
1,464,000
16
16
14
14
14
12
12
10
1,596,000
16
16
16
14
14
12
12
10
TABLE 6. TECHNICAL DATA VENTING (Continued)
