8
1.11
Running
The running of the appliance is controlled from a control panel with a microprocessor which programmes the following
phases:
–
When a request for heat is sent in start-up mode the main fan, the external cochlea and the internal loading cochlea start
up to supply the necessary quantity of pellets for ignition. The internal cochlea starts up 8 seconds later than the external
cochlea;
–
When the pellet loading for ignition is finished, the ignition resistance is powered electrically, and this ignites the flame
the brightness of which is recorded by the photocell within a max. of 20 minutes (safety time). In the event of non-ignition,
the burner goes into SHUTDOWN mode. In the event of a SHUTDOWN, in order to reactivate normal running conditions,
it is necessary to disconnect the appliance from the mains, remove the cause of the malfunction, and then reconnect it to
the power supply;
–
After the flame has been correctly detected, the appliance starts to run normally with a gradual increase in power supply
until the maximum value programmed is reached, and the appliance continues to operate in modulation until the pro-
grammed water temperature for the boiler is reached, or that of a water storage heater if one is installed. While the burner
is running, the external and internal cochleas also work according to the programmed ON and OFF times;
–
Once the programmed temperature has been reached, the cochleas, both internal and external, are stopped by the control
panel, and the pellets remaining in the combustion chamber continue to burn;
–
When the brightness of the photocell goes below 20 lux, the fan speed increases to clear the combustion chamber of the
last residue and then it stops.
The burner is then ready for the next start-up.
m
WARNING CAUTION
–
The programming of the parameters MUST be carried out EXCLUSIVELY BY QUALIFIED TECHNICIANS AUTHOR-
ISED BY
Elmec Group S.r.l.
, and only after the Password has been given.
–
For the working and shut-down periods of the burner, whether the "time bands" are activated or not should
be taken into consideration.
–
If the COMPRESSED AIR KIT is also present, cleaning of the combustion chamber takes place at the beginning
and at the end of each operational cycle of the burner.
d
IT IS FORBIDDEN
Programming of the technical parameters from the User Menu.
1.12
Pellet
The devices are designed and built to
burn quality pellets
which have the following characteristics:
Description
U/M
Pellet
Diameter
mm
6 Din Plus
Length
mm
25 (max)
Density
Kg/m
3
650
Lower heating power
kWh/kg
5
Percentage of humidity
%
Max 8 (of the weight)
Percentage of ash
%
Max 1 (of the weight)
