Rizzoli ST Série Manuel D'utilisation page 123

tained by third parts according to the spec-
ifies of designer and installer. To make this
system it is necessary to make the going and
return connections, that are interchangea-
ble, 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
I
VRP
Picture 20 - Thermal discharge circuit scheme
3.7 EXAMPLES (ST 60 - ST 90)
Here are some examples of possible system
realization. These schemes are just valid as
example and must not be used in the mak-
I
VST A
T
ST
R
S
Picture 21 - Simplified schemes for the installing of a heating system with the thermal cooker ST 60 or ST 90 as heat generator
CAPTION
Hot water
Cold water
M
Manometer
P
Circulator
VE
Closed expansion tank
Thermostat
VNR
No return valve
TP
VNR
VSP
M VSP AL
VE
P
S
T
Thermometer
VSP
Overpressure valve
AL
Acoustic alarm
TP
T of cleaning
A
Going
R
Return
VRP
Pressure reduction valve
121
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.
ST
ing of the system. Ask always a thermal
technician for an installation that best suites
your needs.
CA
CR
S
Discharge
B
Boiler
CA
Going header
CR
Return header
VST
Thermal discharge valve
ACS
Sanitary hot water
I
Cold water entry
S
VST
ACS
B
I