21
Coaxial Elbows - Equivalent length
4"/2" [100 mm/60 mm]
45°
1.64 ft. [0.5 m]
90°
3.28 ft. [1.0 m]
5” / 3” [128 mm/80 mm]
45°
1.64 ft. [0.5 m]
90°
3.28 ft. [1.0 m]
Coaxial Termination - Equivalent length 3 ft (0.9m)
NOTE:
Coaxial venting can run horizontal or vertical.
•
of elbow to desired orientation (rear, right or left).
• Measure distance from outside wall face to elbow, this
dimension will be known as 'X", add distance "Y" + 2"
(60 mm) to "X" this is the total dimension of the vents.
See Figure 5-2.
• Mark dimension from above on outer aluminum intake
vent. Measure length of waste material, and transfer
•
into intake air vent and pass them through hole in wall.
• Check all measurements before cutting. Clearance to
combustible materials is zero when using coaxial vent
system.
• After installing venting use calibrated analyzer to verify
there is no recirculation of combustion.
• Ensure termination is positioned with slots at the
bottom.
WARNING
Asphyxiation hazard. Before securing the
screws ensure the pipe has been pushed in a
minimum of 1-3/4" (45 mm) into the gasket
end of the other pipe. Failure to follow these
instructions could result in death or serious
injury.
!
WT = Wall Thickness
FIGURE 5-2 - Coaxial Venting Horizontal or Vertical
CAN BE USED ON ALL SIZES
5 - COMBUSTION AIR AND VENT PIPING
5.6 Coaxial Venting Instructions
are:
Coaxial Pipe Vent Lengths
(Includes First Elbow And Termination)
Boiler
Size
100/115
125/150
165/205 ALL
Vent Size
4"/2"
[100mm/60mm]
5"/3"
[128mm/80mm]
ALL
Maximum
Minimum
Natalini
32.8 ft [10m]
32.8 ft [10m]
6 ft.
[1.8m]
DuraVent
27.88 ft [8.5m]
Centrotherm
24.60 ft [7.5m]
min. 7.09 in (180 mm)min. 7.09 in (180 mm)
max. 13.78 in (350 mm)max. 13.78 in (350 mm)
1.97 in (50 mm)1.97 in (50 mm)
Note: 2" is insertion depth of straight pipe to elbow.
240013375 REV A, [07/01/2021]
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