Ferroli PEGASUS F2 N T Instructions For Use, Installation And Maintenance page 20

Pilot light unit
Key
1 Combustion chamber door
2 Inspection door
3 Pilot burner
4 Ignition electrode
5 Thermocouple
6 Pilot nozzle
7 Gas supply pipe
Cleaning the boiler and fl ue
To properly clean the boiler (fi g. 17):
• Turn off the gas ahead of the unit and disconnect the electrical
power supply.
• Take the front panel off the boiler (see Fig. 12).
• Lift the boiler cover by pressing upwards (see also Fig. 6-7).
• Remove the insulation covering the anti-backfl ow device.
• Remove the fume chamber closing plate and the associated insu-
lation.
• Remove the burner unit (see preceding paragraph).
• Using the brush provided, clean the fume evacuation ducts between
the cast iron elements of the boiler shell, 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
20
Pegasus F2 N T
5
Fig. 16
Fig. 17
3- 4 mm
3
4
7
1
2
3
4
6
5