22
Pipe length (m)
Air intake diaphragm diameter (mm)
0,5 ≤ L ≤ 10*
Ø
47
10 ≤ L ≤ 26*
No diaphragm
* the first elbow from the boiler is not to be accounted for
3.2.6.2.3 Air intake and flue gas discharge system via 80/80 mm split pipes
C42 – C52 – C82 installation category
Air intake
Minimum permissible length of air intake pipe is 1 meter.
Each wide radius 90° elbow (R=D) equals a 1 meter long pipe section.
Each narrow radius 90° elbow (R<D) equals a 1 meter long pipe section.
Flue gas discharge
Minimum permissible length of flue gas discharge pipe is 0,5 meter.
Each wide radius 90° elbow (R=D) in flue gas discharge equals a 1,5 meter long pipe section.
Each narrow radius 90° elbow (R<D) in flue gas discharge equals a 3,5 meter long pipe section.
Choosing the applicable diaphragm supplied with the boiler
Ø
47 diaphragm is supplied by the manufacturer in the optional air/flue gas split pipe kit
The above data are referred to air intake/flue gas exhaust systems which are implemented by means of smooth, rigid
manufacturer approved and supplied pipes.
400
700
136,5
56,5
Ø 80
1
1
Pic. 13 - Dimensions for connection to the air intake/flue gas
exhaust split pipe system (CTFS)
Pic. 12 - Air intake/flue gas exhaust split pipe system (CTFS)
108
108,5
145
145
