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3 COMMISSIONING AND MAINTENANCE
3.1
Preparing for initial startup
The first start-up of the thermal unit must be carried out by the
Technical Assistance Service.
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
− 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 applicable
laws and standards.
3.2
Initial startup
Once you have completed all the checks listed above, proceed 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
Psi
OUTSIDE
°C
°C
°F
Bar
Psi
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.
(*) If the communication test fails the message "no COMM"
will appear
37
COMMISSIONING AND MAINTENANCE
°C
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