Burnham K2WTC - Page 38

38
107774-01 - 9/17
VII. Venting D. Design Requirements Unique to Split Vent Systems (continued)
Ta b l e 7 . 2 1 : S u m m a r y o f S p l i t Ve n t S y s t e m O p t i o n s
Option # 11 12 13 14 15 16
Illustrated in Figure 7.22 7.22 7.22 7.22 7.23, 7.24 7.23, 7.24
Pipe Penetration
Through Structure
Vent Roof Roof Roof Roof Roof Roof
Intake Wall Wall Wall Wall Wall Wall
Material
Vent
CPVC/PVC
(Note 2)
DuraVent
PolyPro
(Rigid)
Selkirk
Polyue
Centrotherm
InnoFlue
SW
DuraVent
PolyPro
(Rigid/Flex)
Selkirk Polyue
(Rigid/Flex)
Intake PVC PVC PVC PVC PVC PVC
Nominal Diameter
Vent 3” 3” 3” 3” 3” 3”
Intake 3” 3” 3” 3” 3” 3”
Min Equivalent Vent Length:
Models
135 48” 48” 48” 48” 48” 48”
150 52” 52” 52” 52” 52” 52”
180 52” 52” 52” 52” 52” 52”
Max Equivalent Vent Length (Note 1):
Models
135 135ft 135ft 135ft 135ft 135ft 135ft
150 135ft 135ft 135ft 135ft 135ft 135ft
180 135ft 135ft 135ft 135ft 135ft 135ft
Rigid Vent Terminals
Vent
Coupling
w/Screen
3PPS-12B or
3PPS-36B
w/Screen
3PF-10UV
or 3PF-
39UV
w/Screen
ISEP03 or
ISEP0339
w/Screen
Not Permitted
Intake
90 Elbow
w/Screen
90 Elbow
w/Screen
90 Elbow
w/Screen
90 Elbow w/
Screen
Flex Termination
& Components
(Masonry Chimney
Chase) (Note 3)
Vent
Not Permitted
3PPS-FK
3PPS-FLEX**
3PF-FLEX-KIT
3PF-FLEX
Intake
90 Elbow
w/Screen
90 Elbow
w/Screen
Flex Termination
& Components
(B-Vent Chimney
Chase)
Vent
Not Permitted
3PPS-VFT
3PPS-BF*
3PPS-FLEX**
3PF-10UV or
3PF-39UV
w/Screen
3PF-BVSC
(Note 3)
Intake
90 Elbow
w/Screen
90 Elbow
w/Screen
* Specify size of B vent (e.g. 3PPS-BV6 is for use with 6” B vent).
** Specify length in feet.
Note 1: Max vent lengths shown also apply to the intake. Flex vent reduces the maximum allowable vent length in some
applications. See equivalent lengths for ex vent shown in Table 7.14 and sizing example on page 32.
Note 2: First 30” plus rst exhaust elbow are CPVC.
Note 3: See Polyue installation manual for gaskets, spacers and other required vent components.
All vertical terminals require compatible roof ashing and storm collars.