Fer Falcon 47-26701 Installation, Servicing And User Instructions Manual page 16

INDUSTRIE
Notes on concentric horizontal installation
To locate the centre of the hole for passing the pipes
through the wall, refer to fig. 13. Bear in mind that
the two concentric pipes must slope downwards
away from the boiler at a rate of about 3 mm/m to
avoid rainwater entering the boiler. The concentric
pipes making up the air - flue gas duct must be
sealed with the gasket where they join the boiler (fig.
17). Outside, the pipes should protrude from the
wall between 10 and 60 mm (fig. 17).
3.03.3 Maximum concentric flue length
First table below shows the maximum flue lengths available for boilers with concentric systems.
For correct calculation remember to include the reduction for bends on second table. Please refer to 3.02 for use of restrictor
Maximum flue lenght permissible
Falcon
*For horizontal Flueing the reduction for appliance bend or turret are already included.
Reduction for bend
100 mm concentric bend 90°
100 mm concentric bend 45°
125 mm concentric bend 90°
125 mm concentric bend 45°
16
Fig. 17
100 mm concentric
Vertical
4 m
1 m
0,5 m
0,5 m
0,25 m
max. 3 m
1 2
3
Fig. 18a
FALCON
Between
10-60mm
125 mm concentric
Horizontal* Vertical
3 m 5 m
Horizontal*
5 m
4
3
2
1
Fig. 18b