Rizzoli ZV Série Manuel D'utilisation page 68

2.4 DIMENSIONS AND CORRECT FORMS OF CHIMNEY
Chimney must be dimensioned in a correct
way according to the type of cooker it is con-
nected with, minding the environmental and
general conditions of the place in which it is
placed. The section of the chimney must per-
mit the flow of the fumes produced by the
cooker without difficulties, but it must not
be too big otherwise the chimney will experi-
ence problems in heating itself and this may
generate problems like weak draught and
condensation. In the table it is indicated the
recommended diameter for the flue accord-
NO
Picture 4 - Examples of correct and uncorrect chimney execution
Model
ø
Entrance
ø
Flue H < 4m
ø
Flue 4 m < H < 6m
ø
Flue H > 6m
Necessary depression
Table 1 - Indications for the dimension of the chimney according to its
height
ing to the model of cooker and to the height
of the chimney (H). The height of the chim-
ney must be enough to insure the draught
necessary to the chosen model. Bigger is the
height of the chimney, bigger is the draught;
if the chimney is lower than 4 metres, the
correct working of the cooker is not insured.
The chimney must not have tortuous parts,
horizontal parts or counterslope parts; the
number of bends must be reduced to mini-
mum. In picture 4 you can see some examples
of good and bad chimney connection.
YES
ZV 60 ZV 90
130 mm 130 mm
Draught not Draught not
guaranteed guaranteed
160 mm 160 mm
150 mm 150 mm
12 Pa 11 Pa
66
H
Picture 5 - H dimension for the sizing of
the flue