SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
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Model:
SBN 85-310
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B
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Vent Height (feet)
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5
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8
6
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6
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Input Btu/hr
Rise
Vent Connector Diameter (inches)
310,000
1'
9 8 8
8
7
7
6
6
310,000
2'
8 8 8
7
7
7
6
6
310,000
3'
8 8 8
7
7
7
6
6
No. of Units
Combined Input (Btu/hr x 1,000)
Combined Vent/Manifold 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
VENT TABLES FOR CATEGORY I - TYPE B GAS VENT
