for the technician
Electronical regulation
POSSIBLE REGULATIONS ON THE MAIN P.C.B.
The SUPERMASTER models are equipped with a Microprocessor P.C.B., with a sequence of 8
microswitches (SW3 / 1:8) which allow to make personalizing actions for the boiler’s functioning.
The firm arrangements are
underlined.
Disconnect the power supply before approaching the microswitches. Restore the power
supply only after you have closed the back cover of the control panel.
Moreover, the changes of the microswitches haven’t effect until the boiler is electrically
connected.
SW3 / 1 – Natural gas Functioning = OFF. LPG Functioning = ON. The firm arrangement depends
on the gas type arranged for the boiler. For the GAS TYPE Changing it is necessary to follow
the complete instructions described in the previous paragraph “Changing Gas type”.
SW3 / 2 – Heating Flow Temperature Range:
OFF = normal (+30°C/+80°C); ON = reduced (+25°C/
+45°C). The reduced arrangement is thought for low temperature systems, but the best results
with this type of system are gained with the normal arrangement, using the suitable optional
Low Temperature Kit.
SW3 / 3 – It determines the delay of 3 Minutes, before the new ignition after the overcoming of the
heating set temperature.
OFF = Delay ON (for normal systems or radiators); ON = Delay OFF
(for fan coil systems).
SW3 / 4 – In SUPERMASTER Boilers it must be
OFF.
SW3 / 5 and 6 – Pump Functioning Way in Heating System:
5 OFF – 6 OFF: intermittent for normal applications (with or without delay, see SW3/3)
5 OFF – 6 ON: always turned off (with outside circulators)
5 ON – 6 Unimportant (OFF or ON): always on (for high thermic Inertia systems)
SW3 / 7 – In SUPERMASTER Boilers it must be
ON.
SW3 / 8 – In SUPERMASTER Boilers it must be
OFF.
706_ON7_R00
ON
ON
OFF
SW3
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