System Start-Up - Ferroli PEGASUS F2 N T Instructions For Use, Installation And Maintenance

3.2 System start-up

System start-up must be carried out by Qualifi ed Personnel.
The following operations and checks are to be made at fi rst ignition, and after all maintenance opera-
tions that involved disconnecting from the systems or an intervention on safety devices or parts of the
boiler.
Before lighting the boiler:
• Open any on-off valves between the boiler and the system.
• Check the airtightness of the gas system, proceeding with caution and using a soap and water
solution to detect any leaks in connections.
• Fill the water system and make sure that all air contained in the boiler and the system has been vented by
opening the air vent valve on the boiler and any vent valves on the system.
• Make sure there are no water leaks in the system or boiler.
• Make sure the electrical system is properly connected.
• Make sure that the unit is connected to a good earthing system.
• Make sure that the pressure and gas fl ow values are those required for heating.
• Make sure there are no fl ammable liquids or materials in the immediate vicinity of the boiler.
Lighting the boiler
• Open the gas valve ahead of the boiler.
• Vent the air from the pipe ahead of the gas valve.
• Follow the user operating sequence described in paragraph 1.3.
The boiler switch 4 of fi g. 19 has 3 positions, "0-1-TEST"; the fi rst two have the on-off function,
the third (unstable) must only be used for service and maintenance purposes.
In case of an electrical power failure while the boiler is working, the burners will go out and re-
ignite automatically when power is restored.
Checks during operation
• Check the airtightness of the fuel circuit and water systems.
• Check the effi ciency of the fl ue and fume ducts while the boiler is working.
• Check that the water is circulating properly between the boiler and the systems.
• Check the proper ignition of the boiler by performing various tests, turning it on and off with
the room thermostat or boiler thermostat.
• Make sure that the fuel consumption indicated on the meter corresponds to that given in the
technical data table in chap. 4.
Turning off
To turn the unit off temporarily or for an extended period, refer to the user instructions given
in paragraph 1.3.
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Pegasus F2 N T