Ariston microSYSTEM 21 RFFI Manuel de l'utilisateur - Page 9
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and maintenance costs.
- If the boiler should be out of use for a
prolonged period, it is recommended
that the electrical power supply be
disconnected and that the external gas
cock be closed. If low temperatures are
expected, the boiler and system pipe
work should be drained in order to
prevent frost damage.
- T o improve comfort and take full
advantage of the heat produced by the
boiler, it is recommended that an
external (room) thermostat be installed.
- It is good practice to clean and service
the appliance and central heating
system every year.
Call an Authorised Service Centre.
Ignition procedure
Push the button "A" the green L.E.D. "B"
will illuminate indicating that the boiler is
supplied with electricity.
A
Push the button "C" the green L.E.D. "D"
will illuminate indicating that the boiler is
operating for central heating production.
C
B
D
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