Ferroli BlueHelix HiTech RRT C Instructions For Use, Installation & Maintenance page 355

BlueHelix HiTech RRT C
For Installations type C(10)3 / C(11)3
Combined air intake and fume evacuation system (collective air/fume system) in overpressure.
Equipment intended to be connected via its ducts to a terminal which simultaneously allows the
entry of combustion air and the evacuation of fumes through concentric orifices or sufficiently
close to be in similar wind conditions.
The fan is located upstream of the combustion circuit.
• For temperatures and fume flow rates, refer to "Technical data table" on page 381.
The boiler can be connected to positive pressure collective flues ONLY IF FUELED WITH NAT-
URAL GAS (G20). BlueHelix HiTech RRT C boiler is fitted as standard with a Clapet non-return
valve (backflow preventer).
After completing installation of the flues, to adapt the fan speed to the system, it is necessary to
set parameter P67 to 1 and do calibration (see "Calibration procedure [AUTO SETUP]" on
page 361).
Fill in the label, inside the document bag,
giving the heat flow values at Qmin (Δpmax,
saf (min) and Qmin (0Pa) according to the
image opposite. Complete the date and sig-
nature field.
It is mandatory to VISIBLY attach the
white sticker (included in the document
bag), supplied with the unit, to the front
panel of the boiler.
After installation, check the tightness of the fumes
B
and gas circuit.
FAILURE TO COMPLY WITH THIS INSTRUCTION MAY
RESULT IN THE RISK OF ASPHYXIA DUE TO THE
EMISSION OF COMBUSTION FUMES IN THE PLACE
WHERE THE BOILER IS INSTALLED.
Removing the casing could cause combustion prod-
ucts to escape even when the unit is off.
The unit must be connected to a fume exhaust system designed by a heating engineer according
to EN 13384-2.
The collective fume evacuation system must be suitably sized to allow the device to function ac-
cording to the following design specifications:
• The maximum pressure, when n-1 units operate at maximum heat output (with n = total number
of units connected or that can be connected to the same collective duct), and one boiler oper-
ates at minimum heat output, is 25 Pa.
• The authorized minimum pressure difference between the combustion products outlet and the
combustion air inlet is -200 Pa including the -100 Pa pressure generated by the wind.
• The duct must have been sized with a nominal combustion products temperature of 25°C.
• The maximum recirculation percentage allowed due to wind action is 10%.
• The common duct must be certified to allow an overpressure of at least 200 Pa (min. pressure
class P1).
• There must not be any draft diverter in the duct system.
In particular, at the point of connection to the collective pressure hose, a plate giving at least the
following technical information must be visible:
EN
P67 = 1
Qmin ( pmax, saf(min)) _________________kW
Qmin (0Pa)______________________________kW
______________________date____/____/________
Signature
cod. 3541V304 - Rev. 00 - 03/2024
C
(10)3
4.1
4.7
355