Ariston CLAS SYSTEM One Installation And Servicing Manual

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MAINTENANCE GUIDE
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
3
Legend:
1 - Fan
2 - Venturi
3 - Gasket
Fan & mixer venturi according to the model
Power Fan Venturi diameter
18 kW EBM 118 85W Ø 16,1
24 kW EBM 118 85W Ø 16,1
30 kW EBM 118 85W Ø 18,7
38 kW EBM 118 85W Ø 21,6
1
2
3
4.4 Gas Valve
Tools
TIME
15 min
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 - Gas valve
2 - Solenoids
3 - Throttle adjustment
4 - Offset adjustment
5 - Inlet test nipple

Ariston CLAS SYSTEM One Specifications

General

Fuel Type	Natural Gas / LPG
Mounting	Wall-mounted
ErP Heating Efficiency	A
Modulation	1:7
Heating Output	24 kW
Warranty	2 years