Summary Of Split Vent System Options - U.S. Boiler Company K2 Installation Instructions Manual

VII. Venting
Table 7.21: Summary of Split Vent System Options
Option #
Illustrated in Figure
Vent
Pipe Penetration
Through Structure
Intake
Vent
Material
Intake
Vent
Nominal Diameter
Intake
Min Equivalent Vent Length:
K2-080
K2-100
K2-120
Models
K2-150
K2-180
Max Equivalent Vent Length (Note 1):
K2-080
K2-100
K2-120
Models
K2-150
K2-180
Vent
Rigid Vent Terminals
Intake
Flex Termination
Vent
& Components
(Masonry Chimney
Intake
Chase) (Note 3)
Flex Termination
Vent
& Components
(B-Vent Chimney
Chase)
Intake
Note 1: Max vent lengths shown also apply to the intake. Flex vent reduces the maximum allowable vent length.
See equivalent lengths for flex vent shown in Table 7.14 and sizing example on page 31.
Note 2: First 30" plus first exhaust elbow are CPVC.
Note 3: If masonry chimney contains flues in addition to that being used for chase, aLL must be unused.
Note 4: See Polyflue installation manual for gaskets, spacers and other required vent components.
All vertical terminals require compatible roof flashing and storm collars.
38
D. Design Requirements Unique to Split Vent Systems (continued)
25 26
7.22 7.22
Roof Roof
Wall Wall
CPVC/PVC CPVC/PVC
(Note 2) (Note 2)
PVC PVC
2" 3"
2" or 3" 3"
48" 48"
48" 48"
48"
Not Permitted 52"
52"
60ft 135ft
60ft 135ft
135ft
135ft
Not Permitted
135ft
Coupling Coupling
w/Screen w/Screen
90 Elbow 90 Elbow
w/Screen w/Screen
27 28
7.22 7.22
Roof Roof
Wall Wall
DuraVent DuraVent
PolyPro PolyPro
(Rigid) (Rigid)
PVC PVC
2" 3"
2" or 3" 3"
48" 48"
48" 48"
48"
Not Permitted 52"
52"
60ft 135ft
60ft 135ft
135ft
135ft
Not Permitted
135ft
2PPS-12B or 3PPS-12B or
2PPS-36B 3PPS-36B
w/Screen w/Screen
90 Elbow 90 Elbow
w/Screen w/Screen
29 30
7.22 7.22
Roof Roof
Wall Wall
Selkirk Selkirk
Polyflue Polyflue
PVC PVC
2" 3"
2" or 3" 3"
48" 48"
48" 48"
48"
52"
52"
60ft 135ft
60ft 135ft
135ft
135ft
135ft
2PF-10UV or 3PF-10UV or
2PF-39UV 3PF-39UV
w/Screen w/Screen
90 Elbow 90 Elbow
w/Screen w/Screen
105294-05 - 5/15