Crown Boiler PHNTM080 - Page 28

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Table 7.13b: Summary of Vertical “B-Vent Air Chase” Vent Options
(B-Vent Chase MUST Be Sealed)
Option 18 19 20 21
Illustrated in Figure 7.19 7.19 7.20 7.20
Pipe Penetration
Through Structure
Vent Roof Roof Roof Roof
Intake Roof Roof Roof Roof
Material
Vent
DuraVent
PolyPro
(Rigid/Flex)
DuraVent
PolyPro
(Rigid/Flex)
Centrotherm
InnoFlue
SW/Flex
Centrotherm
InnoFlue
SW/Flex
Intake B Vent/PVC B Vent/PVC B Vent/PVC B Vent/PVC
Nominal Diameter
Vent 2” 3” 2” 3”
Intake 2” or 3” 3” 2” or 3” 3”
Min B Vent ID 5” 6” 5” 6”
Min Equivalent Vent Length:
Models
080 36” 36” 36” 36”
100 36” 36” 36” 36”
120
Not Permitted
36”
Not Permitted
36”
150 52” 52”
180 52” 52”
Max Equivalent Vent Length (Note 1):
Models
080 60ft 135ft 60ft 135ft
100 60ft 135ft 60ft 135ft
120
Not Permitted
135ft
Not Permitted
135ft
150 135ft 135ft
180 135ft 135ft
VentManufacturer’sPNforFlex
Termination/Components Required
2PPS-VFT
2PPS-BV*
2PPS-FLEX**
3PPS-VFT
3PPS-BV*
3PPS-FLEX**
IFBK02****
IAWP02B
IFBK03****
IAWP03B
* Specify size of B vent (e.g. 2PPS-BV
6 is for use with 6” B vent)
** Specify length in feet.
**** Specify Flex length and B-vent diameter (e.g. IFBK022505includes25ftofexandusedwith5”Bvent)
Note 1: Max vent lengths shown also apply to the intake. Flex vent reduces the maximum allowable vent length. See equivalent
lengthsforexventshowninTable7.14andsizingexampleonpage27.