Instructions for the installer
33
3.6.6
Air intake and flue gas venting via Ø 80 mm split pipes
For all systems with separate air intake and flue gas vent pipes, the suitable standard split pipe kit (0SDOPPIA13) must be used, it
includes two air deflectors, retaining screws, seals and the following parts:
A.
a female flanged stub pipe Ø 80 mm for connecting air intake duct;
B.
a female flanged stub pipe Ø 80 mm for connecting flue gas venting duct with relevant deflector;
DANGER
If the original standard split pipe kit is not used, correct boiler operation is not guaranteed.
C42 – C52 – C82 installation categories
Air intake
• Minimum permissible length of air intake pipe is 1 meter.
•
Each wide radius 90° air-intake duct elbow (R=D) is equivalent to a 0.8 metre long straight pipe section.
•
Each narrow radius 90° air-intake duct elbow (R<D) is equivalent to a 1.6 metre long straight pipe section.
• Each air intake duct length of one metre is equivalent to a 0.6 metre long straight pipe section.
•
Every split pipe chimney at intake is equivalent to a 4.1 metre long straight pipe section.
•
Air intake duct flow resistance shall not be considered.
•
Install the standard air deflector.
Flue gas vent
•
Minimum permissible length of flue gas venting pipe is 1 meter.
•
Each wide radius 90° elbow (R=D) in flue gas vent equals a 1.3 m long straight pipe section.
•
Each narrow radius 90° elbow (R<D) in flue gas vent equals a 2.7 m long straight pipe section.
•
Each flue gas venting duct length of one metre is equivalent to a 1.0 metre long straight pipe section.
•
Every split pipe chimney at glue gas vent is equivalent to a 5.6 metre long straight pipe section.
•
The wall-hung exhaust terminal corresponds to 4.3 m of equivalent linear length. !da duplicazione!
Use the diaphragms supplied with the boiler (see
Fig. 12 0SDOPPIA13).
Pipe length (m)
Flue gas venting diaphragm diameter
0.5 ≤ L < 26*
Ø 44
26 ≤ L < 40*
Ø 49
40 ≤ L < 47*
-
Tab. 10 Table indicating split pipes 80+80 C42-C52-C82 types
(*) first curve included.
WARNING
The pipe length information refers to air intake/flue gas venting ducts made from smooth, rigid pipes approved and sup
-
plied by the manufacturer.
