55
flame off completely, it is necessary to
turn the gas valve button (15 fig. 11)
clockwise.
On “RX CE IONO” and “RX PVA CE
IONO” models with electronic ignition it
is enough to turn off the switch (1 fig.
11) to turn off the boiler. Close the gas
pipe cock if you are not going to use
the boiler for a long time.
SAFETY STAT
“RX 37÷55” models are equipped with
safety stat
(6 fig. 11)
with manual
resetting.
In case the boiler tempera-
ture exceeds 95°C the safety stat will
extinguish the pilot burner thus shut-
ting off the gas flow to the pilot and
main burner.
Should the stat trip off, it will be neces-
sary to unscrew the cover and reset
the button below for the pilot burner to
restart (fig. 12).
Should the boiler “lock out” again,
you must call the authorized techni-
cal staff.
SMOKE SAFETY DEVICE
It is a safety device which controls the
correct discharge of flue gas into the
atmophere (3 fig. 11).
The control device stops the gas
valve if the flue gas is descharged into
the boiler room is continuous way and
in such quantities as to become dan-
gerous.
To start the boiler again, switch off
the power, then remove the smoke
stat cover and reset the button
below (fig. 12).
If the boiler stops again, it will be
necessary to call the authorized tech-
nical staff.
SYSTEM FILLING
Check periodically that the hydrometer
(4 fig. 11) has pressure values at a
switched-off system of 1 - 1,2 bar.
If the pressure is less than 1 bar, re-
charge it rotating the knob anti-clock-
wise. After the operation check that
the tap is properly closed.
Should the pressure exceed the fore-
seen limit, discharge the superfluous
amount by operating on the vent knob
of any radiator.
GAS CONVERSION
Should a gas other than that for which
the boiler is equipped be used, the con-
version has to be carried out by tech-
nical personel authorized by the manu-
facturer.
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.
Maintenance and check of equipment
and safety devices shall be carried
out only by authorized technical per-
sonel. The boiler is supplied with an
electric cable. Should this require
replacement, get in touch exclusively
with the authorized technical staff.
Fig. 12
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