Ferroli BlueHelix HiTech RRT H Instructions For Use & Installation page 341

BlueHelix HiTech RRT H
Important
The unit is a "C-type" with sealed chamber and forced draft; the air inlet and fume outlet must be
connected to one of the extraction/suction systems indicated below. Before proceeding with in-
stallation, check and carefully observe the above instructions. Also, comply with the provisions on
the positioning of wall and/or roof terminals and the minimum distances from windows, walls, ven-
tilation openings, etc.
In case of installation with maximum resistance (coaxial or separate flue) it is advisable to
carry out a calibration procedure [AUTO SETUP] to optimize boiler combustion.
Connection with coaxial pipes
fig. 31- Examples of connection with coaxial pipes (
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
041083X0
Table 5- Max. length coaxial ducts
Max. permissible length
(horizontal)
Max. permissible length
(vertical)
Reduction factor 90° bend
Reduction factor 45° bend
EN
Ø 127
Ø 80
041006X0
fig. 32- Starting accessories for coaxial ducts
Coaxial 60/100
BLUEHELIX HITECH RRT 18 H
BLUEHELIX HITECH RRT 28 H
BLUEHELIX HITECH RRT 34 H
BLUEHELIX HITECH RRT 45 H
BLUEHELIX HITECH RRT 18 H
BLUEHELIX HITECH RRT 28 H
BLUEHELIX HITECH RRT 34 H
BLUEHELIX HITECH RRT 45 H
1 m
0.5 m
cod. 3541V484 - Rev 00 - 07/2022
= Air / = Fumes)
041084X0
Coaxial 80/125
= m
7
= m
7
= m
7
BLUEHELIX HITECH RRT 18 H
= m
6
BLUEHELIX HITECH RRT 28 H
= m
BLUEHELIX HITECH RRT 34 H
8
= m
BLUEHELIX HITECH RRT 45 H
8
= m
8
= m
5
= m
28
= m
20
= m
20
= m
15
0.5 m
0.25 m
341