Rendimax N EL
25
13.03 disassembling and cleaning the burner assembly (to be performed once a year)
To remove the burner assembly, proceed as follows:
• Remove the electrical power and close the gas upstream from the boiler.
• Remove the electronic flame control unit from the gas valve (fig. 14)
• Disconnect the cables from the electrode assembly.
• Unscrew the four screws which fasten the gas supply pipe upstream from the gas valve.
• Unscrew the two nuts which fasten the door of the combustion chamber to the cast-iron parts of the boiler (fig.
15).
• Remove the burner assembly and door of the combustion chamber.
At this stage, the burners can be cleaned and checked. Clean the burners and electrodes using only a non-metallic
brush or compressed air; never use chemicals.
fig. 14
fig. 15
