Auxiliary Connections; Installation Modes - Rizzoli S Série Manuel D'utilisation

irreversible damaging of the boiler itself.
Anyway, it is necessary to connect the going con­
nector, the return connector and the discharge
3.3

AUXILIARY CONNECTIONS

According to the system you want to install, there
are some auxiliary connectors for facultative use,
but sometimes necessary. These are the connec­
tors for the thermal discharge circuit, the connec­
3.4

INSTALLATION MODES

The technical law (UNI 10412­2) has introduced
the possibility to install the solid combustion
based devices matched with devices with closed
expansion tank, endowed with thermal discharge
with emergency exchanger inside the boiler. ST
thermal cookers are endowed with all the predis­
positions for the thermal discharge.
ST thermal cookers can be installed with open ex­
3.5 THERMOMETER
On one of the two front sides of the ST thermal
cooker, once the wood case has been removed,
there is a digital thermometer. The thermometer
indicates the temperature of the water in the boil­
3.6 THERMOSTAT
ST thermal cookers are not endowed with ther­
mostat. If you want to create a forced circula­
tion based heating system it is necessary to use
an external thermostat to control the working of
the circulation pump of the system, according to
the temperature of the water in the boiler. The
WARNING! For a longer duration of the boiler of the thermal cooker, you must not make
circulate the water with temperatures lower than 55-60° C. Lower temperatures genera-
te acid condensation and gas-black on the walls of the boiler.
3.7 SAFETY
On every solid combustible based boilers it is not
technically possible to break the combustion im­
mediately as happens for boilers based on liquid
or gas combustible according to necessity. For
this reason, it is important to swallow always the
produced heating also even if the heating system
does not request that and also in case of lack of AC
power. On contrary, the water in the boiler could
connector (necessary to empty the boiler in case
of maintenance).
tor for the detector of thermal discharge valve
and the connector for the thermostat. If not used,
these connectors must be covered.
pansion tank, in this case you should use the going
connector to connect also the safety pipe and the
return connector also for the pipe of discharge.
ST thermal cookers may also be installed with
closed expansion tank making the thermal dis­
charge system and then connecting the connec­
tors as described forward.
er. In this case the temperature is detected at a
different point than the thermostat or electronic
control unit, so it is normal that there may be a
difference between the two indications.
thermostat must be placed external to the device
with the temperature detector inserted in an suit­
ed cockpit in the rear part of the thermal cooker.
The thermostat must guarantee the working of the
pump each time the water temperature of the boil­
er exceeds the set temperature.
boil without possibility of outlet, with serious dan­
ger of explosion of the boiler and serious injury risk
for the people present near the thermal cooker.
For this reason, we recommend to follow strictly
what is written in UNI 10412­2 law in the various
cases and we suggest also to insert in the system
also a boiler able to accumulate the heating in ex­
cess produced as sanitary hot water.
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