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If a room thermostat is installed we recommend our chronothermostat CLASS PIU’ which, in addition to
guaranteeing the comfort of a precise regulation of temperature, offers a notable range of heating
programmes; alternatively use a programming digital timer.
ATTENTION. The room thermostat with 230 V mains supply must be connected to the earth terminal,
or use a class II room thermostat.
Chronothermostat CLASS PIU’ (accessory)
Then remove the knobs from the front panel. Screw the display board onto the back of the panel and insert the
knobs so that the arrows on the knobs are set at the minimum value (zero).
Enlarged detail of the cor-
rect knob pin -
potentiometer housing
coupling as described in
the instructions above.
Trimmer
Knob pin
Pin housing on the
trimmer
Knob
Arrow