Ferroli PEGASUS F2 N 2S Instructions For Use, Installation And Maintenance page 23

Pegasus F2 N 2S
Pilot light unit
Key
1 Combustion chamber door
2 Inspection door
3 Pilot burner
4 Ignition electrode
5 Detection electrode
6 Pilot nozzle
7 Gas supply pipe
Cleaning the boiler and fl ue
To clean the boiler properly (Fig. 22):
• Turn off the gas ahead of the unit and disconnect the electrical power supply.
• Take the front panel off the boiler (see Fig. 15).
• Lift the boiler cover by pressing upwards (see also Fig. 3-4).
• Remove the insulation covering the anti-backfl ow device.
• Remove the fume chamber closing plate and the associated
insulation.
• Remove the burner unit (see preceding paragraph).
• Using the brush provided, clean the fume evacuation ducts
between the cast iron elements of the boiler casing, lastly
removing the dirt with a vacuum cleaner.
• Carefully reassemble all the previously disassembled parts and
check the airtightness of the gas circuit and the combustion
ducts.
• During cleaning operations take care not to damage the fume
thermostat bulb mounted on the back of the fume chamber.
Key
1 Screws securing the boiler cover
2 Boiler cover
3 Fume chamber closing plate
4 Fume chamber insulation
5 Brush
6 Combustion analysis plug
5
fi g. 21
fi g. 22
3 ÷ 4 mm
3
7
4
1
2
3
4
6
5
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