Intergas XTREME 24 - 7.8 Flue and Air Supply Pipeline Lengths

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Piping Pipeline length Total pipeline length
Flue L1+L2+L3+(2x2m) 12 m
Air supply duct L4+L5+L6+(2x2m)+(1x1m) 13 m
Comments
► The total pipeline length is:
The sum of the straight pipeline lengths + the sum of the
replacement pipeline lengths of curves/knees are together
25meters.
► If the allowed length of air supply duct pipe and flue pipe
are together 80metres (excluding the length of the combi-
pipe wall terminal or the twin-pipe wall terminal), then the
calculation falls within the allowed pipeline length.
L1 = 1m
L3 = 6,5m
As the resistance of the flue and air supply duct pipes
increases, the capacity of the boiler will decrease. The allowed
decrease in capacity is a maximum of 5%.
The resistance of the air supply duct and the flue depends
on the length and diameter of the piping system and all
associated components. For each boiler category, the total
allowed pipeline length of the air supply duct and flue is given.
The specification of the pipeline length in meters assumes Ø80
mm piping.
D D
R
R
R/D = 0,5R/D = 0,5
6.7 Pipeline lengths
6.7.1 Replacement lengths
6.7.2 Example calculation
Curve of 90° R/D=1 2 m
Curve of 45° R/D=1 1 m
Knee of 90° R/D=0.5 4 m
Knee of 45° R/D=0.5 2 m
Contact the manufacturer for check calculations for the
resistance of the air supply duct and flue system and for the
wall temperature at the end of the flue system.