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TABLE 7.8: SUMMARY OF VERTICAL VENTING OPTIONS
VENT OPTION #
5
CLASSIFICATION USED IN THIS
MANUAL
ILLUSTRATED IN FIGURE
VERTICAL
TWIN PIPE
ROOF
AIR INTAKE PIPE STRUCTURE
ROOF
AIR INTAKE PIPE SIZE
3”
INLET
VENT
INLET
MINIMUM LENGTH
VENT
3”
MAXIMUM LENGTH
VENT PIPE SIZE
FCM070
49.5ft
FCM090
49.5ft
FCM120
49.5ft
FCM070
49.5ft
FCM090
49.5ft
FCM120
49.5ft
FCM070
2ft
FCM090
2ft
FCM120
2ft
FCM070
2ft
FCM090
2ft
FCM120
2ft
AIR INTAKE TERMINAL
VENT MATERIAL
AIR INTAKE MATERIAL
(RESERVED FOR
FUTURE USE)
7.9
VENT PIPE STRUCTURE
VENT TERMINAL
6
STRAIGHT TERMINAL
BY VENT SYSTEM MFR.
(TABLE 7.5)
3” 180 ELBOW
(FIGURE 7.9)
APPROVED STAINLESS
STEEL VENT SYSTEM
SHOWN IN TABLE 7.5
GALVANIZED OR PVC
19