System Start-Up - Ferroli Pegasus LN 2S Serie Mode D'emploi, Installation Et Entretien

3.2 System start-up

System start-up must be carried out by Qualified Personnel.
The following operations and checks are to be made at the first ignition, and after all maintenance work that involved
disconnecting from the systems or work 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 tightness 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 flow values are those required for heating.
• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler
Light the boiler
• Open the gas valve ahead of the boiler.
• Vent the air from the pipe ahead of the gas valve.
• Turn on or insert any switch or plug ahead of the boiler
• Bring the boiler switch (pos. 8 - fig. 1) to position 1.
• Turn knob 7 (Fig. 1) to a value above 50°C and that of a possible thermostat to the desired temperature value.
At this point, the burner will light and the boiler begins to function automatically, controlled by its adjustment
and safety devices.
If, after correctly carrying out the lighting procedure, the burners do not light and the pushbutton light
comes on, wait about 15 seconds and then press the abovementioned pushbutton. The reset controller
will repeat the ignition cycle. If the burners do not light after the second attempt, consult paragraph 3.4
"Troubleshooting."
The boiler switch 8 has 3 positions "0-1-TEST"; the first 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 auto-
matically when power is restored.
Checks during operation
• Check that the fuel circuit and water systems are airtight.
• Check the efficiency of the flue 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 temporarily turn the boiler off, just turn the boiler switch 8 (Fig. 1) onto 0.
To turn the boiler off for an extended period:
• Turn the knob of the boiler switch 7 (Fig. 1) onto 0;
• Close the gas cock ahead of the boiler;
• Disconnect the electrical power to the unit;
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all water from
the boiler and the system; or add a suitable antifreeze to the heating system.
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Cod. 3540G310 - 03/2007 (Rev. 02)
Pegasus LN 2S
EN