Rizzoli L 90, Instructions Manual

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ENGLISH
87
For more safety, it is possible to make an auxiliary
circuit of thermal discharge connected directly to the
boiler. The thermal discharge circuit is mandatory in
case of closed expansion tank installation. The ther-
mal cooker has a predisposition for this solution. The
thermal discharge system allows to cool directly the
boiler when it is necessary by making flow cold leak-
ing water in a separate circuit inside the boiler.
The making of the thermal discharge system is under
responsibility of the installer. All the components of
the thermal discharge system external to the thermal
cooker must be obtained by third parts according to
the specifies of designer and installer. To make this
system it is necessary to make the going and return
connections, that are interchangeable, the detector
that rules the device must be inserted in the apposite
connection bulb. The system, to be effective, must
be able to work and must have availability of cold
water also in case of lack of AC power. The safety
devices must be accessible also after the installing
for the maintenance and the functional verify. The
functional verify must be done regularly: we suggest
at least once a year. The thermal discharge circuit
must not be used for the production of hot water for
domestic use. On demand, Rizzoli can provide a ther-
mal discharge valve suited for its devices.
3.6 THERMAL DISCHARGE
Picture 17
1
900
448
87
108
390
447
676
463
763
799
745
4 3 2 4 5 7 6
1) Connection thermostat detector Ø 1/2’’ female
2) Going connection Ø 1’’1/4 female
3) Connection for thermal discharge detector Ø 1/2’’ female
4) Connections for thermal discharge circuit Ø 1/2’’ male
5) Return connection Ø 1’’1/4 female
6) Connection discharge Ø ½” female
7) External air intake (optional)