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SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
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MINIMUM CLEARANCE TO COMBUSTIBLES
Model Number "A" Right Side "B" Left Side "C" Back "D" Ceiling
SBN-120 thru
200A
2" 2" 2" 12"
SBN-250/A thru
310/A
3" 3" 3" 12"
SBN-366 6" 6" 6" 6"
SBN-390 4" 4" 4" 4"
SBD30-150/199 2” 2” 2” 12”
A, B, and C clearances to non-combustibles is “0” inches - a 12 inch clearance to cover remains
unchanged.