34
ENGLISH
COMMISSIONING AND MAINTENANCE
Preparing for initial startup
The first start-up of the thermal unit must be carried out by the
Technical Assistance Centre.
Perform the following checks before starting up the boiler:
- Check that the fuel shut-off cock and heating system
shut-off cock are open
- the pressure of the hydraulic circuit, with cold water, is
1.5 bar
(value indicated on the first screen of the control
panel display) and the circuit is not vented
Bar
°C
- Check that the expansion vessel is correctly pre-
charged
- the electric connections have been made correctly
- Check that the flue and air vents are made to applica-
ble laws and standards.
Initial startup
Once you have completed all the checks listed above, pro-
ceed as follows to start up the boiler for the first time:
- set the main switch of the system to ON and the main
switch of the equipment to (
I
).
Upon switching on, the display of the control interface of the
device shows the following pages in sequence.
HEAT
Bar
Bar
°C
°F
Psi
Psi
OUTSIDE
Firmware version of the thermal unit interface.
In the example the message indicates a firmware version = 0.
Communication test between interface and regulator.
The message “init” will appear briefly to indicate the beginning
of the communication between the interface and regulator in-
side the thermal unit (*)
Firmware version of the thermal unit regulator.
In the example the message indicates a firmware version = 1.
At first start-up and at every restoration of the power supply
the venting function signalled by the message “Air” activates.
The vent cycle lasts 14 minutes.
°C
(*)
If the communication test fails the message “no COMM”
will appear
