Sime Brava Slim BF, Installation And Maintenance Manual

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95
EN
– remove the four screws (3) and remove the front panel (4)
from the combustion chamber (6) working carefully so as not
to damage the gasket or the panel insulation
5 6
7
8
Fig. 49
– if there is any dirt on the heat exchanger (7) fins, protect the
burner elements (8) covering them with a sheet of newspaper
or a cloth and brush the heat exchanger (7) clean.
4.3.2 Cleaning the burner
The burner does not require any particular maintenance simply
dust it with a soft brush
4.3.3 Checking the ignition/detection electrode
Check the state of the ignition/detection electrode and replace
if necessary. Check the measurements as per the drawing
whether the ignition/detection electrode is replaced or not.
= =
3,5
+0,5 -0,5
Fig. 50
m
CAUTION
The position of the electrode is essential for the correct
detection of current ionization.
4.3.4 Final operations
After having cleaned the heat exchanger and the burner:
– remove any carbon residue using a vacuum cleaner
– check that the gasket and the insulation of the front panel (6)
of the combustion chamber and the gasket (13) of the front
panel (4) of the sealed chamber are all integral. If they are
not, replace them
– refit the panels (6) and (4) securing them with fastening
screws.
3
4
13
Fig. 51
4.4 Checks
4.4.1 Checking the smoke duct
It is recommended that the user checks that the combustion air
inlet duct and smoke outlet duct are integral and airtight.
4.4.2 Checking the expansion vessel pressure
It is recommended that the expansion vessel on the water side
is drained and that the prefilling pressure is not less than 1 bar.
If this is not the case, pressurize it to the correct value (see
sectionExpansion tank".
Once the checks described above have been completed:
– refill the boiler as described in section "REFILL operations"
– refit the front panel securing it with the two screws which
were removed previously
– start the boiler up and carry out a smoke analysis and/or
measure the combustion efficiency.
4.5 Unscheduled maintenance
If replacing the electronic board, the user MUST set the
parameters as indicated in the table.
Type Nr. Description
Setting for Brava
Slim BF
25 30
PAR 01
Index showing boiler power
in kW
0 = 24; 1 = 30
0 1
PAR 02
Hydraulic configuration
0 = rapid
1 = storage tank with
thermostat or heating only
2 = hot water tank with sensor
3 = two programmer
4=instant with solar power
input
0
PAR 03
Gas Type Configuration
0 = G20; 1 = LPG
0 or 1
PAR 04
Combustion configuration
0 = sealed chamber with
combustion control
1 = open chamber with smoke
thermostat
2 = Low NOx
0