- Thermometer (indicates the temperature of the water inside the boiler unit);
- Acoustic alarm (activated whenever the boiler water temperature reaches 90-95°C);
- Level switch (indicates that water is not up to level inside the boiler).
Two cables exit the control unit, one of which has no plug. The cable with the plug should be connected to a mains
socket with the specifications detailed above. The insulated cable with 4 wires should be connected to the motorised
three-way valve installed in the domestic water system
(see section “Control of a possible three-way motorised valve for
the DHW system”).
The control unit has an internal fuse T 3,15A.
DESCRIPTION OF THE KEYS
- P1 ON/OFF
this button, when pressed for two consecutive seconds, switches the control unit on/off, depending on whether it is off or
on respectively.
During normal operation of the appliance, the control unit must ALWAYS be switched on.
- P2 DECREASE TEMPERATURE
Depending on which thermostat is selected, it decreases the value set.
If pressed at the same time as P3, it activates the DHW function.
- P3 INCREASE TEMPERATURE
Depending on which thermostat is selected, it increases the value set.
If pressed at the same time as P2, it activates the DHW function.
- P4 SET/MENU
Provides access to the set thermostat values signalled by the associated PUMP / VALVE / AUX / SERV LEDs flashing.
It also allows you to save changes made to the values for each thermostat.
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