Table of Contents
Advertisement
A
B
Technical data
The dimensions of the shafts must ensure a minimum gap between the outer wall of the smoke duct and the inner wall of the shaft: 30 mm
for circular section shafts and 20 mm in the event of a square section shaft (Fig. 32).
Maximum 2 changes of direction are allowed on the vertical section of the flue system with a maximum clearance angle of 30° with re-
spect to the vertical.
The maximum vertical extension using a Ø 60 ducting system is 13 metres, the maximum extension includes 1 Ø 60/100 90° bend, 1 m of
Ø 60/100 pipe horizontally, 1 Ø 60 90° bend ducted and the roof terminal for ducting.
For the determination of the C93 flue system in different configurations from the one just described (Fig. 33), one must consider that 1
metre of ducted pipe according to the described indications has a resistance factor of 4.9.
The maximum vertical extension using a Ø 80 rigid ducting system is 45 metres, the maximum extension includes 1 adapter from
Ø 60/100 to Ø 80/125, 1 Ø 80/125 87° bend, 1 m of Ø 80/125 pipe horizontally, 1 Ø 80 90° bend ducted and the roof terminal for ducting.
To determine the C
flue system in configurations other than that described (33) one must consider the following head losses:
93
- 1 m of concentric pipe Ø 80/125 = 1.8 m of rigid ducted pipe Ø 80 and 0.7 m of flexible ducted pipe Ø 80;
- 1 curve Ø 80 of 87° = 2.1 m of rigid ducted pipe Ø 80 and 0.9 m of flexible ducted pipe Ø 80.
Consequently one must subtract the equivalent length of the part added to the 28 m available.
44
Ducting
Rigid
Flexible
Rigid
Flexible
A
C
32
ADAPTOR
(A) mm
Ø 60
66
Ø 50
66
Ø 80
86
Ø 80
103
SHAFT
SHAFT
(B) mm
(C) mm
106
126
106
126
126
146
143
163
C
93
33
Advertisement
Table of Contents
