Ferroli Falcon Installation, Servicing And User Instructions Manual page 14
Copper wall-mounted combination, gas fired boiler for central heating and domestic hot water production, fan assisted, room sealed compartment, electronic flame ignition and control installation, servicing and user instructions
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Holes Ø : 45 47 50
RESTRICTOR FOR TWO PIPE SYSTEM
Total flow resistance
of flue system
minimum
maximum
0 m
13 m
13 m
23 m
23 m
38 m
38 m
48 m
Use restrictor
size
mm
45
47
50
No restrictor
RESTRICTOR FOR CONCENTRIC SYSTEM
Flue lenght up to:
1 bend + 1 meter
Concentric
60 / 100
1 bend + 3 meters
1 bend + 3 meters
Concentric
1 bend + 4 meters
80 / 125
1 bend + 5 meters
Use
restrictor
size
50 mm
No restrictor
45 mm
50 mm
No restrictor
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