TECHNICAL DATA SHEET
• Heating only
• New Ariston exclusive XtraTech™ stainless steel exchanger with high head
• Exchanger passage sections +142% compared to the previous version
• LCD display
• Class A+ in heating achievable with thermoregulation
• Modulation ratio 1:7
• Ready for Ariston NET connectivity
• BusBridgeNet® communication protocol
• Optimized internal silencer
• Installation in partially protected places
• Flue pipe 80, 60, 50 mm.
• Standard LPG conversion kit
Ariston Clas One System 24 kW Methane Condensing Boiler Complete with Flue Gas Kit
Product Code: 3301031
TECHNICAL DATA SHEET: 
New Clas One System 
Clas ONE system is the condensing boiler with AUTO heating only function.
Available in 24 and 35 kW heating-only versions.
Characteristics:
New XTRATECH™ exchanger: Maximum quality.
XtraTech™ is the new exclusive* Ariston stainless steel exchanger, the heart of ONE condensing boilers, developed to guarantee reliability and performance over time.
Increased flow cross-sections: +142% compared to the previous exchanger. Greater head, reduced risk of clogging, improved performance. Every day, as if it were the first.
Every single component has been designed to guarantee performance and durability over time: Ariston guarantee, shown on each component.
Every single component has been rigorously tested and inspected on the production line. 100% of our boilers are tested again before being shipped to our customers.
The finest materials have been selected to last even in the most critical situations. Excellent results over time.
Always connected with Ariston NET
Wherever you are, always within reach of your smartphone. Managing your home comfort has never been easier! Wherever you are, you can control your home climate with your smartphone.
Use only the energy you need. Easy-to-manage weekly schedules, directly from the app. Plus, choose the savings "leaf" for a real reduction in your bill!
Always-on technical support. Thanks to the innovative remote control system, the app alerts your customer in the event of operational problems. By signing a maintenance contract, the Assistance Center can intervene remotely in the event of a fault. Customer peace of mind is at the heart of Ariston NET.
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