Biasi Riva Plus HE M296.24SR/C Service Manual page 13

If there are deposits of soot or dirt on the exchanger lid, clean
with a brush or non-metallic bristle brush.
In any case, avoid any actions that can damage the protective
varnish with which the lid has been covered.
figure 6 .3
4 Reassemble the exchanger carrying out the removal opera-
tions in reverse order.
warning: to lubricate the O-ring gaskets exclusively
use a silicone base grease compatible to be in con-
tact with foods and approved by the local water au-
thorities .
warning: after cleaning or replacement as detailed
above, if it deemed necessary to undertake a com-
bustion analysis, refer to the appropriate chapter
maintenance of the installation instructions manual .
Condensing heat exChanger
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