Ariston System A 30 RFF Manual Do Utilizador

Hinge down the electrical box to gain access to the
electrical connections. Push in the tabs P (Fig. 30)
on either side of the boiler and pivot the box for-
ward. 

Remove the PCB cover (see Section 18.4).
Connect the live neutral and  earth wires to the main
cable.

If using a room thermostat or other external control,
they can be connected in place of the link on the ter-
minal block (Diagram A- Fig. 32).

Note: Use only controls designed for voltage free
switching or 24V supply. Do not connect to a 230V
supply, and do not run 230v cables alongside the
low voltage cables.

All necessary settings for room thermostat opera-
tions are described in Section 17 ADJUSTMENTS
AND SETTINGS.

Cylinder
thermistor

System A Plus
change the EEPROM on PCB