Technical information

12
Servicing should only be performed by a Qualied Service Technician
VENTING TABLES FOR CATEGORY 1 – TYPE B GAS VENT
Multiple Gas Fired Tank-Type Heaters
When venting multiple Category 1 tank type
heaters using Type B vent pipe, follow the
installation tables below which give sizing and
data based upon NFPA 54 ANSI Z223.1.
MODEL BTN-120
Input: 120,000 Btu/hr
Total Vent Height (Feet)
Vent Connector Size: 5 inches 6 8 10 15 20 30 50 100
Input Btu/hr Rise Vent Connector Diameter (Inches)
120,000 1 Ft. 6 6 5 5 5 5 5 5
120,000 2 Ft. 5 5 5 5 5 5 5 5
120,000 3 Ft. 5 5 5 5 5 5 5 5
Number of Heaters Combined Input (Btu/hr) Manifold and Common Vent Diameters (Inches)
2 240,000 7 7 7 6 6 6 6 6
3 360,000 8 8 8 7 7 7 6 6
4 480,000 9 9 9 8 8 7 7 7
MODEL BTN-154, BTR-151
Input: 150,000/ 154,000 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)
150,000/ 154,000 1 Ft. 6 6 6 6 6 6 6 6
150,000/ 154,000 2 Ft. 6 6 6 6 6 6 6 6
150,000/ 154,000 3 Ft. 6 6 6 6 6 6 6 6
Number of Heaters Combined Input (Btu/hr) Manifold and Common Vent Diameters (Inches)
2 300,000/ 308,000 8 8 7 7 7 6 6 6
3 450,000/ 462,000 9 9 9 8 8 7 7 7
4 600,000/ 616,000 12 10 10 9 9 8 8 7
MODEL BTN-180, BTN-199, BTN-199C, BTN-200; BTR-201
Input: 180,000/ 182,000 and 199,000 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)
180,000/ 182,000
1 Ft.
7 7 6 6 6 6 6 6
199,000 7 7 7 6 6 6 6 6
180,000/ 182,000
2 Ft.
6 6 6 6 6 6 6 6
199,000 7 7 6 6 6 6 6 6
180,000/ 182,000
3 Ft.
6 6 6 6 6 6 6 6
199,000 6 6 6 6 6 6 6 6
Number of Heaters Combined Input (Btu/hr) Manifold and Common Vent Diameters (Inches)
2
360,000 8 8 8 7 7 7 6 6
364,000 9 8 8 7 7 7 6 6
398,000 9 8 8 8 7 7 7 6
3
540,000 10 9 9 9 8 8 7 7
546,000 10 10 9 9 8 8 7 7
597,000 10 10 10 9 9 8 8 7
4
720,000 12 12 10 10 9 9 8 8
728,000 12 12 12 10 9 9 8 8
796,000 12 12 12 10 10 9 9 8