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TABLE 1.5: SUMMARY OF VERTICAL VENTING OPTIONS
VENT OPTION # 8 9
CLASSIFICATION USED IN THIS
MANUAL
VERTICAL
CONCENTRIC
VERTICAL
CONCENTRIC
ILLUSTRATED IN FIGURE 1.7 1.7
VENT PIPE PENETRATION
THROUGH STRUCTURE
ROOF ROOF
AIR INTAKE PIPE STRUCTURE
THROUGH STRUCTURE
ROOF ROOF
VENT PIPE SIZE
80/125 mm CONCENTRIC 100/150 mm CONCENTRIC
AIR INTAKE PIPE SIZE
MAXIMUM LENGTH
VENT
BWC150 47
BWC225 45
INLET
BWC150 47
BWC225 45
MINIMUM LENGTH
VENT
BWC150 2
BWC225 2
INLET
BWC150 2
BWC225 2
VENT TERMINAL
CROWN #230532
CONCENTRIC TERMINAL
(TABLE 1.6a)
CROWN #230570
CONCENTRIC TERMINAL
(TABLE 1.6b)
AIR INTAKE TERMINAL
VENT MATERIAL
CROWN 80/125 mm VENT
COMPONENTS SHOWN IN
TABLE 1.6a
CROWN 100/150 mm VENT
COMPONENTS SHOWN IN
TABLE 1.6b
AIR INTAKE MATERIAL
TABLE 1.4: VENT/ AIR INTAKE FITTING EQUIVALENT LENGTH
VENT FITTING EQUIVALENT LENGTH (ft)
80/125mm 90° CONCENTRIC ELBOW 8.5
80/125mm 90° SWEEP CONCENTRIC ELBOW 5.5
80/125mm 45° CONCENTRIC ELBOW 3.0
80/125mm 90° CONCENTRIC SUPPORT ELBOW 8.5
100/150mm 90° SWEEP CONCENTRIC ELBOW 8.0
100/150mm 45° CONCENTRIC ELBOW 3.0
100/150mm 90° CONCENTRIC SUPPORT ELBOW 10.0