Riello RDB4 Installation, Use And Maintenance Instructions page 57

Boiler
Clean the boiler as indicated in the appliance accompanying in-
structions in order to maintain all the original combustion charac-
teristics intact, especially the flue gas temperature and
combustion chamber pressure.
Combustion
In case the combustion values found at the beginning of the inter-
vention do not respect the standards in force or, in any case, do
not correspond to a proper combustion, contact the Technical
Assistant and have him carry out the necessary adjustments.
Allow the burner to work for 10 min. and then check the
combustion readings with the parameters indicated within the
appliance instruction manual.
Then carry out a combustion check verifying:
– Smoke temperature at the chimney;
– Content of CO (%);
2
– Content of CO (ppm);
– Smoke value according to opacity smokes index according to
Bacharach scale.
9.2.3 Maintenance position
➤ Remove the blast tube 1)(Fig. 28) after loosing the fixing
screws 2).
➤ Remove the electrodes assembly 4)(Fig. 29) from the nozzle
holder 3) after loosing its fixing screw A)(Fig. 25 to page 24).
➤ Screw the nozzle 5)(Fig. 29).
➤ Refit following the steps described but in reverse order; refit
all burner components as they were originally assembled.
After carrying out maintenance, cleaning or
checking operations, reassemble all the safety
and protection devices of the burner.
Maintenance
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27 GB
Fig. 28
Fig. 29
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