ENGLISH
74
Chimney must be dimensioned in a correct way
according to the type of thermal cooker it is
connected with, minding the environmental
and general conditions of the place in which
it is placed. The section of the chimney must
permit the flow of the fumes produced by
the thermal cooker without difficulties, but
it must not be too big otherwise the chimney
will experience problems in heating itself and
this may generate problems like weak draught
and condensation. In table 1 it is indicated the
recommended diameter for the flue according
to the model and to the height of the chimney
(H). The height of the chimney 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
thermal cooker is not insured. The chimney
must not have tortuous parts, horizontal parts
or counterslope parts; the number of bends
must be reduced to minimum. In picture 4
you can see some examples of good and bad
chimney connection.
2.4
DIMENSIONS AND CORRECT FORMS OF CHIMNEY
Picture 4 - Samples of correct and incorrect chimney connection
Picture 5 - H dimension for the sizing of the
flue
NO
H
YES
Table 1 - Indications for the dimension of the chimney according to its
height
Entrance
130 mm
140 mm
flue H < 4m
flue 4 m < H < 6m
160 mm
180 mm
flue H > 6m
150 mm
160 mm
Model
RT 60
RT 80 - RT 90
RT 100 - RP 110
ø
ø
ø
ø
Draught not
guaranteed
Draught not
guaranteed
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