Installation and user manual
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27
Figure 39
8 Safety devices
All the functions of the thermal module are electrically controlled. Any anomaly causes the lock out of the
single thermal element and the automatic shut down of the gas valve.
The following devices are installed on the water circuit:
5.5 bar safety valve
Auto reset safety thermostat for each thermal element
Safety water differential pressure switch for each thermal element
Temperature probe on each thermal element flow and return. Probes are managed by an electronics
homologated for safety performances and with a double processor technology. Such device allows
to continually control both flow temperature and the Dt between flow and return of the battery
element.
Modulating flow temperature regulation for both single elements and the whole battery
The following devices are installed on the combustion circuit:
Gas electro valve in B+C class for each thermal element, with gas flux pneumatic compensation
according to the inlet air flow ( air/gas 1:1 ratio)
Ionization electrode for continuous flame detection
Flue pipes temperature control for each thermal element
Both protection interventions and gas valve shut-off occur, on each thermal element, when the following
situations take place,
Flame extinguishing
Exchange circuit overheat
Flue high temperature
Air flow reduction
Summary of Contents for CALDARIA CONDENSING 100
Page 38: ...Installation and user manual...
