Ferroli PEGASUS 23 T Instructions D'utilisation, D'installation Et D'entretien page 32

PEGASUS 23 T - 32 T - 35 T - 45 T
Cleaning the boiler and flue
For proper cleaning of the boiler (see fig. 8):
• Close the gas cock ahead of the boiler and disconnect the power
• Remove the front panel of the boiler (fig. 7).
• Lift the casing cover.
• Remove the insulation 5 covering the anti-backflow device.
• Remove the smoke chamber closing plate.
• Remove the burner assembly (see next section).
• Clean from the top downwards, using a flue brush. The same operation can be car-
ried out from the bottom upwards.
• Clean the fume evacuation ducts between the cast iron elements of the boiler shell
with a vacuum cleaner.
• Carefully refit all the previously disassembled parts and check the tightness of the
gas circuit and the combustion ducts.
• During cleaning operations take care not to damage the fume thermostat bulb fitted
on the back of the smoke chamber.
5
2
3
fig. 8 - Cleaning the boiler
1 Casing cover
2 Smoke chamber closing plate
3 Flue brush
5 Insulation
Burner assembly removal and cleaning
To remove the burner assembly:
1. Turn off the power, and the gas ahead of the boiler;
2. Disconnect the gas valve cables "1" and the cable "2" of the piezoelectric igniter.
3. Unscrew the ring "3" fixing the gas feed pipe ahead of the gas valve;
4. Undo the two nuts "4" fixing the combustion chamber door to the cast iron elements
of the boiler.
5. Remove the burner assembly and combustion chamber door.
Then check and clean the burners. Only use a non-metallic brush or compressed air to
clean the burners; never use chemical products.
1
4
Pilot burner assembly
1 Combustion chamber door
3 Pilot burner
4 Ignition electrode
5 Thermocouple
6 Pilot nozzle
7 High voltage cable
8 Gas supply pipe
cod. 3541E581 - Rev. 03 - 10/2019
2
1
fig. 9
1
5
8
6
4
7
3 ÷ 4 mm
3
5
4
8
fig. 10 - Pilot burner
EN
3
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