Crown Boiler BWC151 Installation Instructions Manual page 21

TABLE 7.8: VENT/ AIR INTAKE FITTING EQUIVALENT LENGTH
VENT FITTING
60/100mm 90° CONCENTRIC ELBOW
60/100mm 45° CONCENTRIC ELBOW
80/125mm 90° CONCENTRIC ELBOW
80/125mm 90° SWEEP CONCENTRIC ELBOW
80/125mm 45° CONCENTRIC ELBOW
80/125mm 90° CONCENTRIC SUPPORT ELBOW
3" SINGLE WALL 90° ELBOW
3" SINGLE WALL 45° ELBOW
TABLE 7.9: SUMMARY OF VERTICAL VENTING OPTIONS
VENT OPTION #
CLASSIFICATION USED IN THIS
MANUAL
ILLUSTRATED IN FIGURE
VENT PIPE PENETRATION
THROUGH STRUCTURE
AIR INTAKE PIPE STRUCTURE
THROUGH STRUCTURE
VENT PIPE SIZE
AIR INTAKE PIPE SIZE
BWC070
BWC090
BWC120
BWC151
BWC070
BWC090
BWC120
BWC151
BWC070
BWC090
BWC120
BWC151
BWC070
BWC090
BWC120
BWC151
VENT TERMINAL
AIR INTAKE TERMINAL
VENT MATERIAL
AIR INTAKE MATERIAL
EQUIVALENT LENGTH (ft)
5
VERTICAL
TWIN PIPE
7.10
ROOF
ROOF
3"
3"
98ft
98ft
98ft
98ft
98ft
98ft
98ft
98ft
2ft
2ft
2ft
2ft
2ft
2ft
2ft
2ft
STRAIGHT TERMINAL
BY VENT SYSTEM MFR.
(TABLE 7.5)
CONCENTRIC TERMINAL
3" 180° ELBOW
(FIGURE 7.10)
APPROVED STAINLESS
STEEL VENT SYSTEM
COMPONENTS SHOWN IN
GALVANIZED OR PVC
19
4.5
4.0
8.5
5.5
3.0
8.5
5.5
4.0
6
VERTICAL
CONCENTRIC
7.11
ROOF
ROOF
80/125 mm CONCENTRIC
95ft
95ft
95ft
95ft
95ft
95ft
95ft
95ft
2ft
2ft
2ft
2ft
2ft
2ft
2ft
2ft
CROWN #230532
(TABLE 7.4b)
CROWN 80/125 mm VENT
TABLE 7.4b