Ferroli BlueHelix HiTech RRT C Instructions For Use, Installation & Maintenance page 28

If the BlueHelix HiTech RRT C boiler is to be connected to a flue or a single chimney with natural draft, the flue or
chimney must be expressly designed by professionally qualified technical personnel in conformity with the current re-
gulations and be suitable for sealed chamber units equipped with fan.
Backflow preventer valve
The BlueHelix HiTech RRT C boiler is fitted as standard with a clapet non-return valve (backflow preventer) therefore
it can be connected, only if running on G20 gas, to collective flues in positive pressure.
Using this type of installation, parameter P67 must be set to 1.
In case of a type C(10)3 or C(11)3 boiler installation apply, IN A CLEARLY VISIBLE PLACE on the FRONT PA-
NEL, the relevant white sticker included in the document envelope supplied with the unit.
B
After installation, check the tightness of the fumes and gas circuit.
OTHERWISE THERE IS DANGER OF SUFFOCATION DUE TO THE EMISSION
OF COMBUSTION FUMES.
Position of terminals
J
A Directly under an opening, air inlet, openable window, etc.
B Above an opening, air inlet, openable window, etc.
C Horizontally to an opening, air inlet, openable window, etc.
D Under gutters, drain pipes
E Under cornices or under eaves
F Under balconies or garages
G From a drain pipe or a vertical drain pipe
H From an internal or external corner
I Above ground level, a roof or balcony
J From a surface facing the terminal
K From a terminal facing the terminal
L From a garage opening (e.g. door, window) with access to the home
M Vertically from a terminal on the same wall
28
P
D, E
B
C
G A
fig. 38
Minimum dimensions of fume exhaust terminals
cod. 3541V691 - Rev. 00 - 04/2022
BlueHelix HiTech RRT C
N
N
300 mm
300 mm
300 mm
75 mm
200 mm
200 mm
150 mm
100 mm
300 mm
600 mm
1200 mm
1200 mm
1500 mm
EN