Count the horizontal lengths
Flue pipe lengths C+E = 1 + 1 2 m
Bend D = 1 x 2 m 2 m
Total 4 m
Count the vertical lengths
Flue pipe length A 1 m
Roof terminal G 1 m
Total 2 m
Sample calculation 2
Count the horizontal lengths
Flue pipe lengths J + L = 0,5 + 0,5 1 m
Bends K+ M = 2 + 2 m 4 m
Wall terminal 1 m
Total horizontal length 6 m
Count the vertical lengths
Flue pipe length H 1 m
Total 1m