Commissioning the boiler is done for first time use, after a prolonged shut-
down (more than 28 days) or after any event that would require complete
re-installation of the boiler. Commissioning of the boiler allows the user to
review the various settings and checks to be made to start up the boiler in
complete safety.
7.2
Checklist before commissioning
Perform the following checks before commissioning the boiler:
1. Check that the gas type supplied matches the data shown on the
boiler's data plate.
Danger
Do not commission the boiler if the gas supplied does not match
the gas types approved for the boiler.
2. Check the connection of the earthing cable.
3. Check the gas circuit from the non-return valve to the burner.
4. Check the hydraulic circuit from the boiler's isolation valves to the
heating circuit.
5. Check that the hydraulic pressure in the heating installation is
between 1.0 and 1.5 bar.
6. Check the power supply connections to the various boiler
components.
7. Check the electrical connections on the thermostat and the other
external components.
8. Check the ventilation in the room in which the system is installed.
9. Check the flue gas connections.
7.3
Commissioning procedure
Proceed as described below to commission the boiler:
Open the main gas cock.
Open the gas cock on the boiler.
Open the front panel as described in the chapter entitled "Accessing the
boiler electrical connection board".
Check the gas supply pressure at the pressure socket on the gas valve.
Check the leak tightness of the gas connections in the boiler upstream
of the gas valve.
Check the tightness of the gas pipe, including the gas valves. The test
pressure must not exceed 60 mbar (6 kPa).
Degas the gas supply pipe by unscrewing the pressure socket on the
gas valve. Reclose the socket once the pipe has been sufficiently bled.
Check that the siphon is full of water as described in the chapter entitled
"Filling the siphon".
Check that there are no leaks in the hydraulic connections.
Check the seal/condition of the flue gas pipes.
Use the two-pole switch to supply voltage to the boiler.
Important
For instructions on igniting the boiler, see the following chapter
entitled “Procedure for first start-up”.
7 Commissioning
7.1
General
43
7 Commissioning
Combi 2
