Ferroli BLUEHELIX MAXIMA Series - Page 197

BLUEHELIX MAXIMA
197EN
cod. 3541U630 - Rev. 00 - 07/2020
Connection with coaxial pipes
fig. 15 - Examples of connection with coaxial pipes ( = Air / = Fumes)
For coaxial connection, fit the unit with one of the following starting accessories. For the wall drilling dimensions refer
to the figures fig. 40, fig. 41 and fig. 42 . Any horizontal sections of the fume exhaust must be kept sloping slightly
towards the boiler, to prevent possible condensate from flowing back towards the outside and causing dripping.
fig. 16- Starting accessories for coaxial ducts
Table 2- Max. length coaxial ducts
Coaxial 60/100 Coaxial 80/125
Max. permissible length (horizontal) 7 m
20 m
Max. permissible length (vertical) 8 m
Reduction factor 90° bend 1 m 0.5 m
Reduction factor 45° bend 0.5 m 0.25 m
C
1X
C
1X
C
3X
C
3X
C
3X
C
1X
041095X0041096X0
Ø 100
Ø 60
Ø 60
Ø 100