Ariston microSYSTEM 21 RFFI User Manual - Page 11
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External (room) thermostat
control
If an external (room) thermostat is installed,
it is recommended that the temperature of
the heating system be set (by means of the
knob "G") at the "ECO" position. This will
allow the regulation of the external
temperature to operate effectively and
obtain energy efficiency and good
p e r f o r m a n c e
from the boiler.
G
T urning off central heating
T o turn off the central heating, push the "C"
button and the green L.E.D. "D" will go off.
The boiler will remain electrically supplied
and frost protection will be active for
temperatures below 6° C.
C
D
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