18
1-3/4" (45mm)
3/4"
(19mm)
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.
•
Connect flue elbow to top of boiler and adjust direction 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 5-4.
•
Mark dimension from above on outer aluminum intake
vent. Measure length of waste material, and transfer
dimension to inner grey flue pipe.
•
Remove waste from both vents (flue and air). Verify cut
ends are square and free from burrs. Insert flue back 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.
Figure 5-2 - Coaxial Screw Placement
5.7 Coaxial Vent Screw Placement - See Figure 5-2
Two (2) screws shall be fastened through the outer intake pipe
behind the gaskets at equal distances, approximately 180°
apart. Note the screws used must be no larger than No. 8-3/4
sheet metal screws and must be zinc coated.
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
(2" is insertion depth of straight pipe to elbow)
FIGURE 5-3 - Coaxial Venting Horizontal or Vertical
CAN BE USED ON ALL SIZES
5 - COMBUSTION AIR AND VENT PIPING
5.6 Coaxial Venting Instructions
Maximum equivalent flue lengths for Coaxial venting are:
Coaxial Pipe Vent Lengths
(
Includes First Elbow And Termination
)
Boiler Size
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]
240012879 REV A, [01/31/2020]
Summary of Contents for Dunkirk DCBF-125
Page 63: ...61 A 1 MODELS 125 Heat Only APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 64: ...62 APPENDIX A WIRING DIAGRAMS A 2 MODELS 165 Heat Only 240012879 REV A 01 31 2020...
Page 65: ...63 A 2 MODELS 150 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 66: ...64 A 4 MODELS 205 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 67: ...65 NOTES 240012879 REV A 01 31 2020...
Page 68: ...66 NOTES 240012879 REV A 01 31 2020...
Page 99: ...29 MODEL 150F Combi 150F FLOOR STANDING COMBI WIRING DIAGRAM PN 240012875 REV A 01 31 2020...
Page 101: ...31 205F FLOOR STANDING COMBI WIRING DIAGRAM MODEL 205F Combi PN 240012875 REV A 01 31 2020...
Page 106: ...36 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240012875 REV A 01 31 2020...
Page 114: ...44 NOTES PN 240012875 REV A 01 31 2020...
