Ariston 24 CF User Manual

Pag. 26 di 48
3.7 SPECIAL FUNCTIONS
In order to improve ENERGY SAVING and COFORT are always active “Energy recovery”
e “Small tapping” functions.
3.7.1 Small tapping
Usually in standard boilers the ignition of the boiler is managed by a flow-meter that when the flow-rate
reaches a certain value (minimum flow-rate), gives the signal to the boiler to start to deliver hot water to the
user. Below this minimum flow-rate there is no DHW production, so only cold water can be supplied to the
user.
Usually the minimum flow-rate is around 1,6-2 l/min.
Tanhs to the flow-meter and 2 NTC sensors for DHW temperature control (in the tank and on the DHW flow
out of the plates exchanger), the boilers has a minimum flow rate of 0 l/min ! guaranteeing always DHW
delivery to the users.
The small tapping function has a double function :
- also if water demand is really small from 0 l/min to 4 l/min always delivers hot water at the set
temperature
- the electronic concept and the water stored in the tank allows to the boiler to work with an optimized
power only when the flow-rate is over 4 l/min or the tank sensor detects a temp far below the temp
set.

Ariston 24 CF Specifications

General

Central Heating Output	24 kW
Domestic Hot Water Output	24 kW
Max. working pressure	3 bar
Mounting	Wall-mounted
Fuel	Natural Gas

Summary

1 VALUE PROPOSITIONS

1.1 ADVANTAGES FOR THE END USER

Lists key benefits for end users, covering comfort, energy saving, and usability.

1.2 ADVANTAGES FOR THE INSTALLER

Lists key benefits for installers, emphasizing ease of installation and system compatibility.

1.3 ADVANTAGES FOR SERVICE TECHNICIANS

Lists key benefits for service technicians, focusing on maintenance accessibility and diagnostics.

2 MAIN FEATURES INTENDED FOR THE END USER

2.1 COMFORT AND ENERGY SAVING

Explains how the boiler enhances comfort and saves energy through intelligent functions.

2.2 END USER FAQS

Addresses common questions from end users regarding boiler operation and maintenance.

3 MAIN FEATURES FOR THE INSTALLER

3.1 OVERALL DIMENSIONS

Provides detailed dimensional drawings for open and sealed chamber boiler models.

3.2 FLUE CONNECTIONS

Details flue connection types and maximum lengths for coaxial and twin pipe systems.

3.3 SET UP FOR EXTERNAL CONTROLS

Explains integration with external control systems via BUS interface and management kits.

3.4 ACCESSORIES SUPPLIED

Lists standard accessories included with the boiler, such as mounting brackets and templates.

3.5 TEMPERATURE CONTROL ACCESSORIES

Describes wired and wireless accessories for climatic control and room temperature regulation.

3.6 COMFORT

Focuses on the DHW comfort features, including heat exchangers and accumulation storages.

3.7 SPECIAL FUNCTIONS

Details special functions like "Small tapping" for immediate hot water and "Energy recovery".

3.8 INSTALLER FAQS

Addresses common questions from installers regarding boiler installation and features.

4 MAIN FEATURES FOR THE TECHNICAL ASSISTANCE SERVICE

4.1 SELF-DIAGNOSIS

Explains the self-diagnosis system and its error codification for problem identification.

4.2 ERRORS IN THE MEMORY

Details how the boiler stores recent error logs to aid technical assistance.

4.3 REDUCTION OF SPARE PART CODES

Highlights how component standardization simplifies maintenance by reducing spare part codes.

4.4 MULTIFUNCTIONAL INTERFACE

Describes the control panel interface, buttons, display, and indicators for operation.

4.5 OVERALL VIEW

Provides detailed diagrams of internal components for open and sealed chamber models.

4.6 HYDRAULIC DIAGRAM

Presents a schematic diagram of the boiler's hydraulic circuit and its components.

4.7 HYDRAULIC CIRCUIT

Shows a visual representation of the boiler's hydraulic components and their arrangement.

4.8 COMBUSTION GROUP

Details the components of the combustion group, including the main exchanger and burner.

5 BOILER CODES

5.1 Open chamber

Lists boiler codes for open chamber models across different market areas.

5.2 Sealed chamber

Lists boiler codes for sealed chamber models across different market areas.

6 ACCESSORY CODES

6.1 ZONE MANAGEMENTS HEATING MODULES

Details control modules for managing single or multi-temperature heating zones.

6.2 WIRED THERMOREGOLATION ACCESSORIES

Lists wired accessories for thermoregulation, such as Clima Manager and Room Sensors.

6.3 WIRELESS TERMOREGOLATION ACCESSORIES

Lists wireless accessories for thermoregulation, including Clima Manager and Room Sensors.

6.4 GAS ACCESSORIES

Specifies gas accessories available for different boiler models and markets.

6.5 HYDRAULIC ACCESSORIES

Lists various hydraulic kits for installation, replacement, and recirculation.

7 TECHNICAL DATA

7.1 CLAS B CF

Provides detailed technical specifications for the CLAS B CF boiler model.

7.2 CLAS B FF

Provides detailed technical specifications for the CLAS B FF boiler model.

7.3 CERTIFICATI DI OMOLOGA

Presents homologation certificates and energy performance declarations for the boiler.