Rizzoli STP SF Série Manuel D'utilisation page 117

rear part of the thermal cooker. The usable space
for the way of the pipes is indicated in the pictures
13 and 14. On the circuit of the heating system,
3.4 PRODUCTION OF SANITARY HOT WATER
To produce instant sanitary hot water it is neces-
sary to let throwaway cold water enter through the
dedicated connector. The correspondent exit con-
nector will be connected to the sanitary system.
Incoming cold water pressure must not be higher
than 2,5 bar, if the water comes directly from the
waterworks generally it is necessary to install a
valve for the reduction of the incoming pressure.
485
379
292
230
243
140
62
Picture 20 – Position of the connectors for the thermosanitary system. Position of the rear hole for the passa-
ge of the pipes.
R Return heating system 1" F
M Going heating system ¾" M
X Safety discharge ¾" M
3.5 SAFETY DISCHARGE
The safety discharge is placed in the technical vain
in rear position. This allows to avoid the risen above
of the maximum level during the replenishment of
the internal tank, it allows also the expansion of
the of the water in the boiler and in the tank during
257
199
485
379
292
C M
F
X
R
50 215
265
176
422
483
115
C M
it is important to install an overpressure security
valve set to 3 bar.
F
X
230
243
R
140
In addition, it is recommended to install on the
62
sanitary circuit also an overpressure security valve
set to 6 bar. If in the sanitary hot water circuit is
present a non-return valve, it might be useful to
50 215
insert a small expansion tank.
If you do not mind to produce sanitary hot water
265
with the thermal cooker it is not necessary to fit
the connectors and you have just to cover them.
257
199
176
F Cold water entry ½" M
C Hot water exit ½" M
the work and it also maintain the boiler constantly
to environment pressure. This connector must be
taken to an always free discharge because it is the
main overpressure safety of the device.
422
483