Rizzoli STP SF Série Manuel D'utilisation page 120

Now it is possible to proceed to the replenishment
of the heating system: it must be done slowly, so
that the system is able to escape air well. Then,
it is necessary to close the air outlets previously
opened, to close accurately all the connections,
included the internal ones and to make air escape
from all the radiators. Once the heating system
3.9 MANAGING THE LEVEL OF THE WATER IN THE TANK
The tank of the thermal cooker must be controlled
periodically before the lighting of the thermal
cooker and refilled when necessary. Anyway, the
complete covering of the serpentines of thermal
exchange must be guaranteed. The decrease of
WARNING! Using the thermal cooker without water or with few water in the tank does
not make possible the correct working of the device: it might cause not repairable break-
ings and compromises the duration of the boiler.
3.10 EXPANSION TANK
Every closed hydraulic circuit subjected to vari-
ations of temperature must have a device which
allows the variation of the fluid contained. The
system integrated in the thermal cooker with open
expansion tank works for the boiler and the in-
ternal tank of the thermal cooker. The secondary
circuit for the heating system, being separated, re-
quires a dedicated and well dimensioned accord-
3.11 SAFETY
In every solid combustible based boiler it is not
technically possible to break up immediately the
combustion as it happens for the liquid/gas com-
bustible based boilers when necessary. Because of
this there is the need to drain always the heating
produced, even if the system does not require it
or in case of lack of electricity: when this happens,
in STP thermal cooker the water may come to the
boil but the generated steam is ejected by the safe-
ty discharge. STP thermal cooker shall be intended
as a solid combustible generator endowed with
an internal primary circuit with natural circulation
endowed with open expansion tank and a heating
is well filled, it is necessary to fill also the inter-
nal tank of the thermal cooker. This can be made
opening the upper cover of the vain, the cover of
the tank and inserting manually from overhead the
necessary water. The tank is full when the level of
water reaches the exit of the pipe of the safety
discharge.
the water under the minimum level will cause the
lighting of a specific warning light on the control
unit: if this happens, fill the tank as soon as pos-
sible, by the dedicated tap if present, or manually
from upon.
ing to dimensions of the thermal system expansion
tank, to be installed by a technician.
The expansion tank for the heating system may
also be closed. When connecting to an existent
system or when there is another heat generator,
the expansion tank might exist and be ready for
use.
exchange system with two secondary circuits sep-
arated from the primary one: one for heating and
one for the production of sanitary hot water.
For this reason, the thermal cooker can be installed
in total security as indicated in the referring laws
for what deals with open expansion tank instal-
lations, considering that in this case are already
present these safety devices: open expansion tank,
thermometer, acoustic alarm. The secondary cir-
cuit may be installed with closed expansion tank,
without need to make a thermal discharge system
with serpentine inside the boiler.
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