9.4
Specific maintenance operations
Fig.44
Removing the front panel
2
1
Fig.45
Disconnecting the fan
3
5
1
7684359 - v.06 - 10012019
9.4.1
9.4.2
1. Unscrew the two screws located at the bottom of the front panel by a
quarter turn
2. Remove the front panel.
90 º
AD-4000071-01
9.4.3
1. Remove the air inlet pipe from the venturi.
2. Unscrew the cap nut of the gas valve unit.
3. Disconnect the fan plugs (on the front and rear).
4. Remove the screwed-on plug from the gas valve unit.
4
5. Remove the ignition electrode plug from the ignition transformer.
2
AD-3001178-01
For more information, see
Additional documentation, page 10
General
Danger
Disconnect the boiler's electricity supply.
Shut off the gas supply.
Caution
During inspection or maintenance work, always replace all
gaskets of the disassembled parts.
Removing the front panel
Checking the non-return valve
9 Maintenance
53