Operating instructions

The figures in Tab. (Fig. 22) are only guide figures. The draft depends on the diameter, height, roughness
of the chimney wall, and the temperature difference between combustion products and the outside
atmosphere. We recommend the use of a chimney liner.
Have precise calculations carried out by a heating engineer or flue installer.
Coefficent = 0 041 ( for wood )
Coefficent
=
0
,
041
(
for
wood
)
Coefficent = 0,027 ( for carbon )
F = Section Resulting ( cm
2
)
a = Coefficent
Q
N
= Boiler Heat Output ( kCal/h )
H = Height of Chimney ( meters )
Troubleshooting
25