Ariston ALTEAS ONE Net Series Installation And Servicing Instructions page 63

Remove the three screws to free the fan.
2
Remove the three nuts.
Verify and replace the gasket if it's damaged or showing
signs of deterioration
2
3
Legend:
1 - Fan
2 - Venturi
3 - Gasket
Fan & mixer venturi according to the model
Power Fan
30 kW EBM 118 85W
38 kW EBM 118 85W
3
1
Venturi diameter
Ø 18,7
Ø 21,6
4.4 Gas Valve
Tools
Remove the two screws under the boiler and disconnect the
gas pipe on the top of the gas valve
1
Remove the gas valve
2
Legend:
1 - Inlet test point
MAINTENANCE GUIDE
TIME 15 min
GAS OUTLET
1
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