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R2KA 28 /20 - RAD - ING - Manuale - 1806.1_SK.2
3 Ac
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EN
3. USE
USER
pump anti-locking and diverter valve anti-locking
systems still remain active.
To switch the boiler to OFF operating mode, press
the function key ‘
’, the symbol ‘
’ will
appear fixed on the display, indicating that the
function is enabled (for non condensing models
will appear the message ‘OFF’).
If the boiler was previously running, it will be turned
off and the post-ventilation and post-circulation
functions will be enabled.
If you have to deactivate the boiler for a long period
of time, proceed as follows:
› contact the Technical support centre that will
empty the water system, where no anti-freeze
is intended, and will cut off the power, water and
gas supply.
› Or leave the boiler in OFF operating mode
keeping active the electrical and gas supplies so
that the anti-freeze function may activate.
3.1.7. INFORMATIONAL NOTE ON
ANTI-FREEZE FUNCTION
The boiler is protected against freezing thanks to
the electronic board preparation with functions
that start the burner and heat the concerned parts
when their temperature goes below the minimum
pre-set values.
WARNING
This function is available only if:
› the boiler is powered;
› the gas supply is open;
› the pressure of the system is proper;
› the boiler is not blocked.
