Ferroli BLUEHELIX TECH RRT 30 H Instrucciones De Uso, Instalación Y Mantenimiento página 168

Connection with coaxial pipes
fig. 22 - Examples of connection with coaxial pipes (
Table. 3- Max. length coaxial ducts
Max. permissible length (horizontal)
Max. permissible length (vertical)
Reduction factor 90° bend
Reduction factor 45° bend
For coaxial connection, fit the unit with one of the following starting accessories. For the wall hole dimensions, refer to
the figure on the cover. 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.
Ø 100
Ø 60
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Table. 4 - Max. length of coaxial pipes
Max. permissible length
(horizontal)
Max. permissible length
(vertical)
Reduction factor
90° bend
Reduction factor
45° bend
168
BLUEHELIX TECH RRT 30 H
Coaxial 60/100
Ø 127
Ø 80
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fig. 23- Starting accessories for coaxial ducts
Coaxial 60/100
7 m
8 m
1 m
0.5 m
cod. 3541C670 - Rev. 00 - 05/2018
= Air / = Fumes)
7 m
8 m
1 m
0.5 m
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Coaxial 80/125
Coaxial 80/125
20 m
0.5 m
0.25 m
28 m
0.5 m
0.25 m
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