Ferroli Domina 102 Installation, Servicing And User Instructions Manual page 13

Holes Ø : 47 50 52
RESTRICTOR FOR TWO PIPE SYSTEM
ON DOMINA 102
Total flow resistance
of flue system
minimum maximum
0 m 20 m
20 m 0 m 35 m
35 m 45 m
45 m 50 m
Use
restrictor
size
mm
47
50
52
no restrictor