1. Close the mains gas valve.
2. Disconnect the gas valve electrical connection.
3. Remove the 8 screws from the elbow connecting the gas valve to the
venturi (4 screws per flange).
4. Remove the elbow.
5. Integrate the restrictor provided for the required gas on the gas valve
outlet.
6. Change the O-rings.
7. Proceed to refit the elbow by reversing the steps above.
8. Check the tightness using a leak detector spray.
9. Replace the gas setting label with the one delivered with the boiler
and tick the corresponding gas setting.
8 Commissioning
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