Bellfires Smart Bell 80 MF Preparation Manual page 12

Requirements
Flexible concentric flue systems
Roof outlet using an flexible Ø100 mm liner in an existing lined chimney.
12
18
Y
25
Y
(min. - max.)
2.0 - 4.0 m
4.0 - 12.0 m
32
30
29
5
7
29
26
10/11/12/13
23
4,28,(100)
1
Flue gas restriction plate width
Concentric connection on the appliance is
Ø100-Ø150 mm
30 mm
40 mm
Smart Bell 80-60