Crown Boiler BWC151 User Manual
Page 5
2
3
TABLE 1.1: SUMMARY OF HORIZONTAL VENTING OPTIONS
VENT OPTION #
1
2
3
4
CLASSIFICATION USED IN THIS
MANUAL
HORIZONTAL
TWIN PIPE
HORIZONTAL
TWIN PIPE
HORIZONTAL
TWIN PIPE
HORIZONTAL
TWIN PIPE
ILLUSTRATED IN FIGURE
1.2
1.3
1.4
1.4
VENT PIPE PENETRATION
THROUGH STRUCTURE
WALL
WALL
WALL
WALL
AIR INTAKE PIPE PENETRATION
THROUGH STRUCTURE
WALL
WALL
WALL
WALL
VENT PIPE SIZE
3”
3”
3”
4”
AIR INTAKE PIPE SIZE
3”
3”
4”
4”
MAXIMUM LENGTH
VENT
BWC070
100ft
100ft
BWC090
100ft
100ft
BWC120
100ft
100ft
BWC151
100ft
100ft
BWC150
55ft
BWC225
55ft
INLET
BWC070
100ft
100ft
BWC090
100ft
100ft
BWC120
100ft
100ft
BWC151
100ft
100ft
BWC150
60ft
BWC225
60ft
MINIMUM LENGTH
VENT
BWC070
2ft
2ft
BWC090
2ft
2ft
BWC120
2ft
2ft
BWC151
2ft
2ft
BWC150
2ft
BWC225
2ft
INLET
BWC070
2ft
2ft
BWC090
2ft
2ft
BWC120
2ft
2ft
BWC151
2ft
2ft
BWC150
2ft
BWC225
2ft
VENT TERMINAL
TEE (Note #1)
CROWN
PN
230873
CONCENTRIC
TERMINAL
TEE (Note #1)
TEE (Note #1)
AIR INTAKE TERMINAL
TEE (Note #1)
TEE (Note #1)
TEE (Note #1)
VENT MATERIAL
CPVC + PVC
(Note #2)
CPVC + PVC
(Note #2)
CPVC + PVC
(Note #2)
CPVC + PVC
(Note #2)
AIR INTAKE MATERIAL
PVC
PVC
PVC
PVC
Note #1: TEEs may be offset on snorkels as shown in Figure 1.10
Note #2: First 30” and Elbow connected to boiler must be CPVC. Downstream vent pipe can be PVC, except as noted in text.