TABLE 7.8: VENT/ AIR INTAKE FITTING EQUIVALENT LENGTH
VENT FITTING | EQUIVALENT LENGTH (ft) |
|
|
60/100mm 90° CONCENTRIC ELBOW | 4.5 |
|
|
60/100mm 45° CONCENTRIC ELBOW | 4.0 |
|
|
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 |
|
|
3” SINGLE WALL 90° ELBOW | 5.5 |
|
|
3” SINGLE WALL 45° ELBOW | 4.0 |
|
|
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
LENGTH | VENT | BWC090 | |
|
| ||
|
| BWC120 | |
MAXIMUM | INLET | BWC151 | |
BWC120 | |||
|
| BWC070 | |
|
| BWC090 | |
|
| BWC151 | |
LENGTH | VENT | BWC070 | |
BWC090 | |||
|
| ||
|
| BWC120 | |
MINIMUM | INLET | BWC151 | |
BWC070 | |||
|
| ||
|
| BWC090 | |
|
| BWC120 | |
|
| BWC151 |
VENT TERMINAL
AIR INTAKE TERMINAL
VENT MATERIAL
AIR INTAKE MATERIAL
5 | 6 | |
VERTICAL | VERTICAL | |
TWIN PIPE | CONCENTRIC | |
7.10 | 7.11 | |
ROOF | ROOF | |
ROOF | ROOF | |
3” |
| |
80/125 mm CONCENTRIC | ||
3” | ||
| ||
|
| |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
98ft | 95ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
2ft | 2ft | |
STRAIGHT TERMINAL |
| |
BY VENT SYSTEM MFR. | CROWN #230532 | |
(TABLE 7.5) | ||
CONCENTRIC TERMINAL | ||
| ||
3” 180° ELBOW | (TABLE 7.4b) | |
(FIGURE 7.10) |
| |
APPROVED STAINLESS | CROWN 80/125 mm VENT | |
STEEL VENT SYSTEM | COMPONENTS SHOWN IN | |
GALVANIZED OR PVC | TABLE 7.4b | |
| ||
|
|
19
