Immergas EOLO Mini - Page 32

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STEMkW Special ed 01/08 EOLO Mini kW Special
Technical DocumentationTechnical Documentation
In order to avoid water-gas exchanger from overheating should the pump malfunction or
there should not be adequate water ow in the primary circuit, when the NTC central
heating ow probe (B1) detects an increase in temperature above 5 °C per second (twice
consecutively), the burner is switched o.
e boiler restarts when the ow temperature falls below 43 °C.
Insucient circulation
A central heating ow probe (B1) malfunction is signaled by ashing of no.5 LED ( )
and the boiler stops running whether in central heating and DHW mode.
NTC ow probe (B1)
malfunction
In order to avoid water-gas exchanger from overheating, at the end of every central hea-
ting, antifreeze or “chimneysweep” request, the pump (M1) continues operating for 150
seconds.
Pump post circulation
At the end of any request and after the burner has switched o, the fan continues to run
for 30 seconds to cool down the combustion chamber.
Sealed chamber
post ventilation
In order to avoid overheating the water-gas exchanger, when the boiler temperature read
by NTC ow probe (B1) exceeds 95 °C, the fan starts until the temperature falls below
90 °C.
Flow overheating
ventilation