21
P/N 240010943, Rev. C [09/07/2016]
6 - COMBUSTION AIR AND VENT PIPING
6.6
Venting Configurations
Various venting configurations can be applied to this boiler.
For guidance see Venting Configuration Table 7A and
corresponding Figure.
NOTICE
Use of vent covers may cause freezing. If using
vent covers overall vent length must be considered.
Failure to heed this information may compromise
operation of this boiler.
Flue Gas Location
Combustion Air
Location
Flue Gas
Terminals
Corresponding Figure
Roof
Roof
Two Pipe
Figure 6-1
Concentric
Figure 6-7
Side Wall
Single Pipe
Figure 6-8
Inside Air
Single Pipe
Figure 6-9
Side Wall
Roof
Single Pipe
Figure 6-10
Side Wall
Two Pipe
Figure 6-2, 6-3
Concentric
Figure 6-4, 6-5, 6-6
Inside Air
Single Pipe
Figure 6-11
Table 7A - Allowed - Venting Locations
Type
Location
Terminal Type
Corresponding Figure
Venting
(Flue Gas)
Side Wall
S-Terminal with 90° elbow
Figure 6-2, 6-3
S-Terminal with 45° elbow
Figure 6-12
Concentric
Figure 6-4, 6-5, 6-6
Concentric with accelerator
Figure 6-13
T-Terminal
Figure 6-10, 6-11, 6-14
Roof
Straight Terminal
Figure 6-1, 6-8, 6-9
Concentric
Figure 6-7
Combustion Air
(Fresh Air)
Side Wall
Raised 90° down elbow
Figure 6-2
90° down elbow
Figure 6-3, 6-8,
Concentric
Figure 6-4, 6-5, 6-6
No Terminal (inside air)
Figure 6-9, 6-11
Inside Air
Raised 90° down elbow
Figure 6-1, 6-10
Concentric
Figure 6-7
Table 7B - Combustion Air - Venting Terminal Type
