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INSTALLATION
S1 = Air intake S2 = Flue gas exhaust
Table of flue gas exhaust duct lengths
Type
Maximum Extension Exhaust-air (m)
Diameter of pipe
HS C 24 FF NG
reduction ø 41
reduction ø 44
without reduction
MIN
MAX
MIN
MAX
MIN
MAX
Coaxial System
C12
C32
C42
0,5
0,75
0,75
4
ø 60/100
B32
0,5
0,75
0,75
4
Twin-pipe System
C12
C32
C42
S1 = S2
0,5/0,5
5/5
5/5
13/13
13/13
20/20
ø 80/80
C52
C82
S1 + S2
1,5
14
14
30
30
45
ø 80/80
B22
0,5
14
14
30
30
45
ø 80
Type of air suction/flue gas exhaust ducting
Combustion air drawn from the room
B22
Air drawn from the room
B32
Individual or shared flue gas
exhaust ducting built into the
building
Air drawn from the room
Combustion air intake from outside
C12 Flue gas exhaust and air
suction duct through external
wall in the same range of
pressure
C32 Flue gas exhaust
andair suction duct from
outsidewithroof terminalin the
same range of pressure
C42
Individual or shared flue
gas exhaust and air suction
through flue ducting built into
the building
C52 Flue gas exhaust leading
outside and air suction duct
through external wall not in
the same range of pressure
C82 Flue gas exhaust through
individual or shared flue
ducting built into the building
Air suction through external
wall
Summary of Contents for 3636085
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