Technical information
21
installation
Table of ue gas exhaust duct lengths
COAXIAL SYSTEM
FLUE TYPE
MAX
LENGTH
DIAMETER of
PIPE
C13
Flue gas exhaust and air suction duct
through external wall in the same range
of pressure
24 kW
12 m
36 m
60/100
80/125
30 kW
10 m
30 m
60/100
80/125
38 kW
6 m
18 m
60/100
80/125
C 33
Flue gas exhaust and air suction duct
from outside with roof terminal in the
same range of pressure
24 kW
12 m
42 m
60/100
80/125
30 kW
10 m
35 m
60/100
80/125
38 kW
8 m
21 m
60/100
80/125
C43
Individual or shared ue gas exhaust and
air suction through ue ducting built into
the building
24 kW
12 m
0 m
60/100
80/125
30 kW
10 m
0 m
60/100
80/125
38 kW
8 m
0 m
60/100
80/125










