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STEEkW ed 01/06 EOLO Extra kW
Technical DocumentationTechnical Documentation
Breakage of the central heating delivery probe (B1) stops boiler operation.
Breakage of the d.h.w. probe (B2) is signalled by the flashing of LED 10 ( ), and the
boiler continues working in the d.h.w. mode.
Breakage of the NTC
probes
(B1 and B2)
After the burner switches off at the end of a request the combustion chamber is washed
and the fan works for 30 seconds.
Sealed chamber
post-ventilation
To prevent the water-gas exchanger overheating, if the NTC delivery probe (B1) measures
a boiler temperature higher than 90°C, the fan starts working and continues until the
temperature drops below 85 °C.
Fan for delivery
overheating
To prevent the water-gas exchanger from overheating, at the end of each central heating, an-
tifreeze or “chimneysweep” request the circulator (M1) keeps working for 150 seconds.
Post-circulation circulator
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