14
3 START-UP
3.1
Before starting up the burner
Before starting up the appliance check that:
–
the burner is correctly mounted on the boiler door and that this latter is firmly closed
–
the cochlea and the burner flexible connection hose are positioned correctly
–
the pellet container has been filled
–
the water temperature probe has been correctly positioned
–
the boiler and the plant has been filled with water
–
the hydraulic circuit valves are open
–
the fumes exhaust duct has been set up properly.
3.2
First ignition
Connect the burner power supply, positioning the plant main switch and the main burner switch in the "ON" position , and
check that the screen lights up.
The burner has already been calibrated for maximum power in the factory, so for the first ignition just press the
F
key for
about 2 seconds and wait for the flame to light.
Leave the burner in the continuous running mode, at maximum power for about 15 minutes, and then with a flue gas analys-
er check that the values recorded are close to the ones indicated in the table:
Description
U/M
Correct vlaue
O
2
%
~ 10
CO (average)
mg/cm
3
< 500
Exhaust temperature
°C
120 ÷ 200
Press the
F
key to turn off the burner and leave it to cool.
l
WARNING
This operation must be carried out ONLY by authorised and qualified technicians.
3.3
Checks to carry out after the first ignition
After the first ignition, with a cold burner:
–
disconnect the pellet supply tube from the burner
–
open the boiler door and check that on the combustion chamber grill THERE IS NO unburnt material. If this is not the case,
it is necessary to modify the settings on the basis of the specific needs (the combustion air and the quantity of fuel) and to
repeat the "FIRST IGNITION" phase previously described.
3.4
Automatic shut-down and subsequent start-ups
Once the request for heat has been satisfied, the pellet feeder stops, and the burner regulates its speed for the burning of
the residual pellet, present in the combustion chamber, up to the minimum luminance (20 lux) measured by the photocell.
When 20 lux is reached, the fan goes up to maximum velocity (for 4 minutes) to clean the combustion chamber of any resid-
ual matter and then it turns off.
At every request for heat all the phases described previously are repeated.
3.5
Pellet calibration
The calibration of the quantity of pellets necessary for ignition and for running the burner is achieved as follows:
–
fill the pellet container
–
pull out the flexible hose from the burner socket and place it in a recipient (basin)
–
Check that there are no requests for heat
–
Connect the burner power supply, positioning the plant main switch and the main burner switch in the "ON" position , and
check that the screen lights up
–
press the button (manual loading) until the pellets are falling continuously into the recipient (the cochlea is full of pellets)
–
empty the recipient and press the button again (manual loading) for about 6 seconds (loading time for max power 5),
controlling the time with a stopwatch, and weigh the pellets which have fallen into the basin.
