10
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Description of display.
Symbol
State
Description
Flashing
Solar pump functioning
On
Boiler burner enabled
On
Communication with boiler active
Flashing
Anomaly present
On
Solar collector temperature sufficient for functioning
Flashing
Anti-freeze function active
On
Digit to display the temperatures, parameters and values.
Sn
On
Probe active
S1 - DHW inhibition probe (NTC)
S2 - Solar storage tank probe (NTC)
S3 - Solar collector probe (PT1000)
On
Indicates the presence of the storage tank
On
Indicates the presence of solar panel/s
Description of the control panel.
Symbol
Description
Control unit switch-on - switch-off/Return to previous menu
Parameter/next value selection
Parameter/previous value selection
Access to the parameters/system info/value confirmation
• Programming the functions.
Access to the board parameters menu is given
through the buttons present on the control unit.
To access the parameters menu and modify a
value necessary:
- Press and hold the ( ) key for 10 seconds. (ac-
cess to the menu)
- Scroll to the parameter to be modified by press-
ing the (
) and (
) buttons.
- Press the ( ) key and then (
) to modify
the value of the parameter selected.
- Select the value and press the ( ) key to confirm.
Otherwise, press (
) to exit. In this case, the
value set will not be memorised, but the previ-
ous one will be kept.
- To exit the parameter menu, press the (
)
button once or wait 60 seconds without press-
ing any keys.
6 Eliminate any air in the solar circuit preferably
using the so-called "pressure shot" method,
which consists in raising the filling pressure of
the circuit followed by a quick opening of the
return valve (8 Fig. 1-4). This method allows
air to be expelled from the circuit.
7 Close the filling cock and switch the filling
pump off, open the regulator screw of the flow
rate regulator (notch in vertical position).
8 Leave the circuit pressurised. Any pressure
drop indicates a leak in the system.
9 Set the functioning pressure in the circuit at
2.0 bar + 0.1 bar for every metre in the distance
between the solar collector and the expansion
vessel (practically, set the same pressure be-
tween expansion vessel and system).
10 Switch the solar pump on at a maximum speed
and make it run for at least 15 minutes.
11 Disconnect the filling pump and close the
fittings using the relevant screw caps.
12 Open the ball valve above the pump com-
pletely.
Do not fill the system in conditions with strong
insolation and with the manifolds at high
temperatures.
Make sure that all air bubbles have been com-
pletely eliminated.
1.14 SOLAR CONTROL UNIT USER
INSTRUCTIONS.
The solar control unit user information are de-
scribed successively.
