Ariston micro SYSTEM 21 RFFI Manuale d'uso - Pagina 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.

- To 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.

Push the button "C" the green L.E.D. "D"

will illuminate indicating that the boiler is

operating for central heating production.