Ferroli F24 Installation, Service And User Instructions Manual page 18

For further accessories please refer to:
"Flue system manual for room sealed
boiler"Example of calculation for wall
inlet/outlet with 2 pipe system
maximum total fl ue length: 48 metres
3.04.4 Example of other installation with two pipe systems
Example of wall inlet/outlet
2 pipe application
18
Attention:
Ref.
1
2
3
4
5
6
7
Fig. 20
Example of direct roof fl ue outlet
and wall air inlet
Fig. 21
Resistance of fl ue restrictor (if req.)
is included (see table on page 13)
Remove the fl ue restrictor.
The fl ue and air pipes must have an inclination
downward equal to 3% from boiler to outside.
N° of
Description
pieces
1 Air bend 80 mm R/D = 0,75
13 Horizontal air pipe
1 Air wall terminal
1 Air inlet closing flange
1 Flue bend 80 mm R/D = 0,75
12 Horizontal flue
1 Air wall terminal outlet flue
Fig. 22
Length or
Code
reduction
1,5 m
13,0 m
2,0 m
—
2,5 m
24,0 m
5,0 m
Total 48,0 m
Example of roof
inlet/outlet
Fig. 23