installation
TWIN-PIPE SYSTEM
FLUE TYPE
MAX
LENGTH
DIAMETER of
PIPE
Length
equivalency for
C13
Flue gas exhaust and air suction duct
through external wall in the same range
of pressure
18 kW
4 m
(S1=S)
80/80
45º
elbow
1.4m
90º
elbow
. m
4 kW
36 m
(S1=S)
45º
elbow
1.4m
90º
elbow
. m
30 kW
30 m
(S1=S)
C 33
Flue gas exhaust andair suction duct from
outsidewithroof terminalin the same
range of pressure
18 kW
70 m
(S1=S)
80/80
45º
elbow
1.4m
90º
elbow
. m
4 kW
60 m
(S1=S
45º
elbow
1.4m
90º
elbow
. m
30 kW
50 m
(S1=S)
C53
Flue gas exhaust leading outside and air
suction duct through external wall not in
the same range of pressure
18 kW
49 m
(S1+S)
80/80
45º
elbow
1.4m
90º
elbow
. m
4 kW
84 m
(S1+S)
45º
elbow
1.4m
90º
elbow
. m
30 kW
70 m
(S1+S)
S1 = Air intake S = Flue gas exhaust
S1 = S - Air intake and flue gas exhaust equal lengths
S1 + S -
Air intake and flue gas exhaust unequal lengths