Cleaning The Boiler; Checking Combustion Parameters - Beretta 30 B.S.I. Manual De Instalacion Y Uso

table 3
DESCRIPTION
30 B.S.I. CO max
2
MINIMUM POWER ADJUSTMENT (P. LL)
- Select the parameter LL (with the boiler still OFF) and wait for
the boiler to come on.
- Check that the minimum CO
paragraph "Checking combustion parameters", page 20)
corresponds with the values indicated in table 4.
If the CO proves to be different from the values in the table, proceed
2
to adjust the parameter by turning the maximum power adjustment
screw after having unscrewed the protective cap (clockwise to
increase) until you obtain a value contained in table 4.
table 4
DESCRIPTION
30 B.S.I. CO min
2
IGNITION SPEED (P. MM)
- Select parameter MM.
The boiler starts at the slow ignition speed.
- Turn the heating water selector to increase or decrease the fan
speed.
MAXIMUM HEATING ADJUSTMENT POSSIBILITY (P. 23)
- Select parameter 23
- Press the ENTER button to access the parameter value
modification function
- Turn the sanitary water selector to modify the maximum fan speed
- Confirm the value you have set by pressing ENTER.
MINIMUM HEATING ADJUSTMENT POSSIBILITY (P. 24)
- Select parameter 24
- Press the ENTER button to access the parameter value
modification function
- Turn the sanitary water selector to modify the minimum fan speed
- Confirm the value you have set by pressing ENTER.
Exit the CALIBRATION & SERVICE function by pressing ESCAPE.
The boiler returns to the "- -" (OFF) status.
To reset, press the button.
- Disconnect the pressure gauge and tighten the pressure tap
screw.
After adjusting the gas valve, seal it with sealing wax.
After making adjustments:
- return the temperature set with the ambient thermostat to the
required position
- close the panel
- put back the shell.
17
.
It is easy to convert from one gas family to another even after the
boiler has been installed. This operation must be performed by
professionally qualified staff. The boiler is designed to work with
natural gas. The product plate indicates which fuel it has been
fitted out to use.
It is possible to convert the boiler from one kind of gas to the other
using kits which can be supplied on request:
- natural gas to LPG conversion kit
- LPG to natural gas conversion kit.
To disassemble, proceed as follows:
- disconnect the boiler from the power supply and close the gas
tap
- remove the components to access to the internal parts of the
boiler (fig. 47)
- remove the gas ramp (A)
- remove the nozzle (B) contained inside the gas ramp and replace
it with the one contained in the kit
- remount the gas ramp
G20
G31
9,0 10,0 %
reading on the analyser (see
2
G20
G31
9,0 10,0 %
GAS CONVERSION
- remount components previously removed
- power the boiler and open the gas tap (with the boiler working,
check there are no leaks in the gas supply circuit).
Programme the "Gas type" parameter and adjust the boiler as
described in the "Adjustments" chapter.
The boiler may only be converted by qualified staff.
After conversion, adjust the boiler again as shown in the
relative paragraph and apply the new rating plate contained
in the kit.
18.
After removing the flange it will be possible to inspect and clean
inside the water tank and check the condition of the magnesium
anode (fig. 48).
- Turn off the hot water system stopcock and empty the water tank
through the drainage device (page 5)
- Loosen the nut and extract the anode (1)
- Remove the nuts (2) blocking the external flange (3) and extract it
- Clean the inside surfaces and remove all the debris through the
opening
- Check the wear conditions of the magnesium anode (1), replace
if necessary
- Check that the gasket (4) is in good condition after extracting it
from the inside flange (5), replace if necessary.
Complete the work of cleaning, re-mount the components working
the other way round to above description.
19

CHECKING COMBUSTION PARAMETERS

.
To ensure the product remains in perfect working order, and to
comply with current legislation, systematically check the boiler at
regular intervals.
To analyse combustion, proceed as follows:
- access the CALIBRATION & SERVICE phase by setting the
password as indicated in chapter "Adjustments"
- insert the analyser probes in the designated positions on the air
chamber, after having removed screw A and cap B (fig. 49)
- make sure, in the HH and LL parameters, that the CO
correspond with those indicated in the table. If the value displayed
is different, proceed to modify it as indicated in the chapter
"Adjustments", in the sections for parameters HH and LL
- carry out the combustion analysis.
Subsequently:
- remove the analyser probes and close the combustion analysis
sockets with the designated screw
- close the instrument panel, reassemble the cover and boiler
shell, following the procedure described for dismantling it in
reverse order.
The fumes analysis probe must be fully inserted.
IMPORTANT: the function that switches off the boiler when water
temperature reaches a maximum of about 90 °C is still enabled
during the combustion analysis phase.
20

CLEANING THE BOILER

values
2