3. Close the main gas tap.
4. Remove the combined collector for the siphon and safety valve
located on the underside of the boiler.
5. Check whether there is any water in the discharge of the safety valve
connection.
6. If any leaks are detected, replace the safety valve.
10.2.9
Cleaning the siphon
1. Switch off the boiler's electrical connection.
2. Close the gas tap under the boiler.
3. Close the main gas tap.
4. Unscrew the two screws located under the front housing by a quarter
turn and remove the front housing.
5. Press the clips on the sides of the instrument box inwards to unlock it,
then tilt the instrument box forwards.
6. Remove the air vent hose above the siphon.
7. Remove the siphon from the boiler.
8. Clean the siphon.
9. Fill the siphon with water up to the mark.
10. Refit the siphon in the boiler.
Danger
The siphon must always be filled with water. This prevents flue
gases from entering the room.
Fig.94 Filling the siphon
10 Maintenance
102 AMC 7686707 - v.01 - 06092018
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