Fig.62
Checking the automatic air vent
1
4
6
5
5
Fig.63
Cleaning the siphon
2
1
123157 - v.12 - 07022018
10.3.5
Checking the automatic air vent
1. Switch off the boiler's electrical connection.
2. Close the gas tap under the boiler.
2
3
3. Close the main gas tap.
4. Unscrew the two screws located under the front housing by a quar
Gas/Gaz
ter turn and remove the front housing.
5. Tilt the instrument box forwards by opening the clips on the sides.
6. Check whether water is visible in the hose of the automatic air vent.
7. In the event of a leak, replace the air vent.
90º
4
5
AD-3000076-01
10.3.6
Cleaning the siphon
Danger
The siphon must always be sufficiently filled with water. This pre
vents flue gases from entering the room.
1. Dismantle the siphon and clean it.
2. Fill the siphon up with water.
3. Fit the siphon.
3
AD-0000086-01
10 Maintenance
65