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TABLE 1.1: SUMMARY OF HORIZONTAL VENTING OPTIONS
VENT OPTION # 3 4
CLASSIFICATION USED IN THIS
MANUAL
HORIZONTAL
CONCENTRIC
HORIZONTAL
CONCENTRIC
ILLUSTRATED IN FIGURE 1.2 1.2
VENT PIPE PENETRATION
THROUGH STRUCTURE
WALL WALL
AIR INTAKE PIPE PENETRATION
THROUGH STRUCTURE
WALL WALL
VENT PIPE SIZE
80/125 mm
CONCENTRIC
100/150 mm
CONCENTRIC
AIR INTAKE PIPE SIZE
MAXIMUM LENGTH
VENT
BWC150 55
BWC225 55
INLET
BWC150 55
BWC225 55
MINIMUM LENGTH
VENT
BWC150 2
BWC225 2
INLET
BWC150 2
BWC225 2
VENT TERMINAL
Crown 230531
CONCENTRIC
TERMINAL
Crown 230569
CONCENTRIC
TERMINAL
AIR INTAKE TERMINAL
VENT MATERIAL
CROWN
80/125mm
VENT
COMPONENTS
SHOWN IN
TABLE 1.6a
CROWN
100/150mm
VENT
COMPONENTS
SHOWN IN
TABLE 1.6b
AIR INTAKE MATERIAL