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Maintenance
6720813171 (2016/05) 49
13.2 Cleaning the heat exchanger, burner and condensate
trap
The boiler has a self-cleaning coating.
13.2.1 Removing the gas valve
Undo the gas fitting screw connection [1] and pull the 4 connectors
[2] from the gas valve.
Fig. 104 Undoing the connections to the gas fitting
13.2.2 Removing the burner cover with the fan and the gas valve
Pull the mains connector [1] from the fan.
Pull the connector of the harness [2] from the fan while pushing on
the connector lock to loosen it.
Fig. 105 Undoing the connections to the gas fitting
Pull the air suction tube from the fan.
Fig. 106 Pulling the air suction tube from the fan
WARNING: Damage to the installation due to short
circuits.
Do not spray the detergent onto the burner, the glow
ignitor, the ionisation electrode or other electrical
components.
GB162-80/100
6720813171-3.1TD
GB162-50/65
GB162-80/100
2
1
2
1
GB162-50/65
6720813171-4.1TD
6 720 648 726-107.1TD
49


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