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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: SBN100-275
latoT.rh/utB 000,572:tupnI Vent Height (feet)
001050302510186”6 :eziS rotcennoC tneV
Input Btu/hr Rise Vent Connector Diameter (inches)
275,000 1' 8 8 7 7 6 6 6 6
275,000 2' 8 8 7 7 6 6 6 6
275,000 3' 7 7 7 7 6 6 6 6
No. of Units Combined Input (Btu/hr x 1,000) Combined Vent/Manifold Diameter
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
VENT TABLES FOR CATEGORY I - TYPE B GAS VENT
Model: SBN100-250
latoT.rh/utB 000,052:tupnI Vent Height (feet)
001050302510186”6 :eziS rotcennoC tneV
Input Btu/hr Rise Vent Connector Diameter (inches)
250,000 1' 8 8 7 7 7 6 6 6
250,000 2' 7 7 7 7 6 6 6 6
250,000 3' 7 7 7 7 6 6 6 6
No. of Units Combined Input (Btu/hr x 1,000) Combined Vent/Manifold Diameter
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