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SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
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Model: SBN80-180; SBN100-199; SBN100-200; SBD30-199
Input:180,000, 190,000 and 199,000 Btu/hr. Total Vent Height (feet)
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Input Btu/hr Rise Vent Connector Diameter (inches)
180,000 1' 7 7 6 6 6 6 6 6
199,000/200,000 1' 7 7 7 6 6 6 6 6
180,000 2' 6 6 6 6 6 6 6 6
199,000/200,000 2' 7 7 6 6 6 6 6 6
180,000 3' 6 6 6 6 6 6 6 6
199,000/200,000 3' 6 6 6 6 6 6 6 6
No. of Units Combined Input (Btu/hr x 1,000) Combined Vent/Manifold Diameter
2
360,000
7 7 6 6 6 6 6 6
398,000/400,000
7 7 7 6 6 6 6 6
3
540,000
7 6 6 6 6 6 6 6
597,000/600,000
6 6 6 6 6 6 6 6
4
720,000
6 6 6 6 6 6 6 6
796,000/800,000
6 6 6 6 6 6 6 6
VENT TABLES FOR CATEGORY I - TYPE B GAS VENT