Buderus Logano plus GB312 Applications Manual page 25

GB312 Applications Manual
5.5.3
Operating Conditions:
GB312 Venting System Table
Models Input (MBH)
GB312-90 328
GB312-120 440
GB312-160 588
GB312-200 733
GB312-240 881
GB312-280 1029
GB312 Venting System Table
Models Input (MBH)
GB312-90 328
GB312-120 440
GB312-160 588
GB312-200 733
GB312-240 881
GB312-280 1029
Note: Breeching pressure measured at outlet of
boiler vent connection
Vent (Exhaust) Outlet Horizontal
Vent Venting Total Equivalent
Connection Diameter Length of Vent (max)
at Boiler (inches)
6" 6" 100
6" 6" 100
6" 6" 100
8" 8" 100
8" 8" 100
8" 8" 100
Combustion Air (inlet) Vertical
Combustion Combustion Total Equivalent
Air Inlet Air Pipe Length of Combustion
Connection Diameter Air Pipe (max)
at Boiler (inches)
4" 5" 100
4" 6" 100
4" 6" 100
4" 8" 100
4" 8" 100
4" 8" 100
Venting Parameters:
Vent Diameter for (minus
one) size diameter and
TEL in feet
5" = 100ft
5" = 75ft
5" = NA
7" = 100ft
7" = 100ft
7" = 65ft
Combustion Air Pipe
Diameter (minus one
inch) maximum TEL
in feet
4" = 55ft
5" = 95ft
5" = 50ft
7" = 100ft
7" = 100ft
7" = 65ft
7DEOH 
Vent Diameter for (minus
two) size diameter and
TEL in feet
4" = 40ft
4" = NA
4" = NA
6" = 45ft
6" = NA
6" = NA
Combustion Air Pipe
Diameter (minus two
inch) maximum TEL in
feet
3" = NA
4" = 30ft
4" = NA
6" = 70ft
6" = 55ft
6" = 35ft
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