263
cod. 3540000251 - Rev. 00 - 03/2024
EN
ALHENA 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 clo-
se 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 290.
The boiler can be connected to positive pressure collective flues
ONLY IF FUELED WITH NATU-
RAL GAS (G20), with separate flue and equipped with the "CLAPET VALVE”
(ref. A - fig. 43)
code 041106X0
. Valve installation must be carried out according to the instructions of fig. 43 and
fig. 42.
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
complete manual calibration
(see “Complete manual calibration”
on page 271).
Fill in the label, inside the document bag, gi-
ving the heat flow values at Qmin (
Δ
pmax,
saf (min) and Qmin (0Pa) according to the
image opposite. Complete the date and si-
gnature field.
It is mandatory to VISIBLY attach the whi-
te sticker (included in the document
bag), supplied with the unit, to the front
panel of the boiler.
B
After installation, check the tightness of the fumes
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 pro-
ducts 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 ope-
rates 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.
C
(10)3
P67 = 1
Qmin (
'
pmax, saf(min)
) _________________kW
Qmin (0Pa)______________________________kW
______________________date____/____/________
cod. 3541R050
Signature
4.1
4.7
