Boiler Ariston CLAS ONE 24 FF

The Ariston CLAS ONE 24 FF is a mixed condensing boiler with a power of 24 kW, a modern and attractive design with small dimensions. It has LCD display, XTRATECH stainless steel primary exchanger and is ready for Ariston NET connectivity. It has energy efficiency class A for heating and ACS and XL load profile. Complies with the new European ErP regulations.

CLAS ONE is the new ARISTON condensing boiler with Per4mance System.

CLAS ONE is the best choice if you are thinking of changing boilers, as it adapts to any type of installation. Available in versions 24, 30 and 35 kW. Enjoy maximum comfort in heating and hot water in your home.

It is the ideal boiler for the replacement of boilers with exits of gases by the facade of the building or patio of ventilation as it offers high performance in terms of comfort, safety and environmental as required by the RITE regulations.

XTRATECH Exchanger: Heating that lasts
ONE condensation technology provides long-lasting and reliable performance over time for daily comfort of the home. Thanks to the new design of the exchanger, the section of the tube increases, which ensures that the water circulates better to increase the heating performance. Always like the first day, for more years to come.

Always connected with Ariston NET
A new generation of connectivity to configure, manage and easily control the system, achieving a great annual energy savings, with a technician always available.

Full control for maximum comfort
A unique set of intelligent and innovative functions to achieve a stable temperature quickly, as well as easy customization to meet each of your comfort needs.

Condensation Boiler with 1:7 modulation ratio

• New exclusive and patented Ariston exclusive high performance XTRATECH stainless steel exchanger
• Exchanger section increased by 142% from previous version
• LCD Display
• Burner Modulation Range 1:7
• Ariston NET Connectivity Ready
• AUTO and COMFORT functions
• Optimized internal muffler

Data Sheet

Ariston CLAS ONE 24 FF
Sealed chamber
Certificate CE: 0085CR0394

Power and performance
Rated power max./min. (Heating): 22.0 / 3.7 kW
Rated power max./min. (DHW): 26.0 / 3.7 kW
Power output max./min. (60/80) (Heating): 21.4 / 3.4 kW
Power output max./min. (DHW): 24.9 / 5.5 kW
Efficiency at rated output (60/80): 97.5 %
Efficiency at rated output (30/50): 107.3 %
Efficiency of the 30% nominal power (return 30 °C): 109.8 %
ErP Energy efficiency class Heating: A
ErP Energy efficiency class DHW: A
ErP Load Profile DHW: XL

Features
Max./Min. heating (high temp.): 82/35 ºC
Max./Min. heating (low temp.): 45/20 ºC
Max./Min. DHW: 60/36 ºC
Hot water flow (DT = 25 °C): 14.5 l/min

Electrical data
Power supply: 230 V / 50 Hz
Power consumption: 77 W
IP degree of electrical power: X5D

Weight and size
Weight: 29.7 Kg
Dimensions (H x W x D): 745 x 400 x 315 mm