Supplied By www.heating spares.co Tel. 0161 620 6677
installation
TWIN-PIPE 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
4 kW
36 m
(S1=S)
80/80
30 kW
30 m
(S1=S)
35 kW
18 m
(S1=S)
C 33
Flue gas exhaust andair suction duct from
outsidewithroof terminalin the same
range of pressure
4 kW
60 m
(S1=S)
80/80
30 kW
50 m
(S1=S)
35 kW
1 m
(S1=S)
C53
Flue gas exhaust leading outside and air
suction duct through external wall not in
the same range of pressure
4 kW
84 m
(S1+S)
80/80
30 kW
70 m
(S1+S)
35 kW
4 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