3.6
CONVERSION INTO L.P.G.
If the boiler uses a different gas from the one for which it
has been equipped, it is necessary replace the main
nozzles and pilot nozzle (only for model with pilot flame)
with suitable ones (tables 4 -5).
Follow these steps:
−
tighten the adjusting screw (2 fig.11) or (5 fig.13).
For
“RX 19÷55 CE IONO”
and
“RX 19-26 PVA CE
IONO”
models remove the plug on pressure regulator
(4 fig.12) and tighten the adjusting screw.
−
set valve input pressure at 30/37 mbar according to
the type of gas by acting on the outer pressure redu-
cer.
3.7
REMOVING THE CASING
Remove the outer casing as follow:
−
remove the boiler top which is fixed with pressure
plugs;
−
remove the panelboard;
−
to remove the door, unscrew completely the screw
fixing the top hinge and lift the door, removing it from
the fixed plug of the bottom hinge;
−
remove front and back panels by loosening the four
nuts which fix them to the panels side;.
−
remove the sides.
3.8
GAS PIPE FILTER
The
“RX”
boiler gas valves are equipped with a filter at
the valve inlet which however cannot filter all impurities in
the gas and network pipes.
To avoid poor functioning of the valve, or in some cases
even to prevent its safety devices from not working, put a
suitable gas filter at the inlet of the boiler gas tubes.
3.9
CLEANING AND MAINTENANCE
When the heating is turned off at the end of the season, it
is compulsory to check the boiler and clean it as follows:
−
take off the boiler top;
−
remove the smoke chamber cleaning plate by
unscrewing the fastening screws in the
“RX 19-26”
boilers;
−
remove the smoke chamber completely unscrewing
the two nuts from the back side and the nut from the
front side of
“RX 37÷55”
boilers;
−
extract the burner assembly by unscrewing the four
screws which fix it to the valve flange;
−
with the appropriate brush, reach down to the rows of
plugs of the cast iron exchanger from the top and scra-
pe off any scale with vertical movements;
−
remove the burners from the nozzle holder header and
throw a jet of air inside them so that any dust can be
removed. Make sure that the top drilled part of the bur-
ners has no scale left;
−
when disassembling and reassembling the burners be
careful not to force any delicate parts, such as the ther-
mocouple drill or the ignition unit;
−
scrape off any scale from the boiler bottom and reas-
semble all the parts checking the position of the
gaskets;
−
check the stack making sure the flue is clean;
−
check the correct operation of the equipment.
Maintenance and check of equipment and safety
devices should be carried out at the end of each
season only by authorized technical personel.
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