Ariston GENUS PREMIUM EVO HP 100 Istruzioni per la progettazione, l'installazione e la manutenzione - Pagina 30
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gas boiler hp
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boiler protection devices
External P.C.B.'s
411
Zone 1 - Room sensor circuit open / short circuit
412
Zone 2 - Room sensor circuit open / short circuit
413
Zone 3 - Room sensor circuit open / short circuit
Ignition and Detecion
501
No fl ame detected
502
Flame detected with gas valve closed
504
Flame lift
5P1
1st Ignition Failed
5P2
2nd Ignition Failed
5P3
Flame cut-off
Air Inlet / Flue gas outlet
610
Exchanger Probe Open Circuit
612
Fan Error
Multi-zone Heating
701
Zone 1 send sensor defective
702
Zone 2 send sensor defective
703
Zone 3 send sensor defective
711
Zone 1 return sensor defective
712
Zone 2 return sensor defective
713
Zone 3 return sensor defective
722
Zone 2 overheating
723
Zone 3 overheating
750
All Heating Zones locked
30
Anti-frost Device
The anti-frost function acts on the central heating fl ow temperature
probe, independently from other regulations, when the electrical
supply is turned on.
If the primary circuit temperature falls below 8°C the pump will run
for 2 minutes.
After the two minutes of circulation (fi xed) the boiler will check the
following:
a) if the central heating fl ow temperature is > 8°C, the pump stops;
b) if the central heating fl ow
temperature is between 4
and 8°C, the pump will run for
another two minutes;
c) if the central heating fl ow
temperature is < 4°C, the
burner
will
fi re
(heating
position) at minimum power
until the temperature reaches
33°C, the burner will go out
and the pump will continue to
run for two minutes.
Activation of the anti-frost safety
device is signalled on the display
by the symbol
.
The anti-frost device activates only when (with the boiler operating
correctly):
- the system pressure is correct;
- the boiler is electrically powered;
- there is a supply of gas.
8 °C
3 °C