Ariston Next Evo X 11 LPG 19.5 kW Water Heater with Vertical Flue

Ariston Next Evo X 11 LPG vertical flue

The Ariston Next Evo X 11 LPG Water Heater with Vertical Flue is a compact instantaneous gas water heater designed to provide domestic hot water on demand without a conventional storage cylinder.

With a maximum useful output of 19.5 kW and a rated hot-water flow of up to 11 L/min at a 25°C temperature rise, the Next Evo X 11 is designed for suitable residential and light commercial hot-water applications.

This product configuration is specifically intended for customers looking for an Ariston Next Evo X 11 LPG water heater with a vertical or roof-routed flue arrangement.

Ariston’s European technical documentation identifies the Next Evo X 11 LPG EU configuration with 11 L/min flow at ΔT25°C, 19.5 kW maximum useful output, 22 kW maximum nominal thermal power, Class A energy performance and C13/C33 flue configurations.

Key Features

• Ariston Next Evo X 11 LPG
• Instantaneous gas water heater
• LPG-compatible configuration
• Up to 11 L/min at ΔT25°C
• 19.5 kW maximum useful output
• 22 kW maximum nominal thermal power
• Low-NOx combustion technology
• Electronic ignition
• Flame-ionisation control
• Electronic temperature control
• LCD user interface
• Compact approximately 165 mm depth
• Energy Class A
• M domestic hot-water load profile
• Internal installation
• C13/C33 flue configurations
• Vertical or roof-routed flue configuration for suitable installations

Technical Specifications

Exact dimensions and accessory configurations should be checked against the physical appliance, current technical documentation and supplied flue components. Ariston’s European documentation confirms the 11 L/min, 19.5 kW, 22 kW, 13 kg and C13/C33 specifications.

11 L/min Instantaneous LPG Water Heater

The Ariston Next Evo X 11 LPG is an instantaneous water heater rather than a conventional storage water heater.

The rated hot-water flow is 11 L/min at ΔT25°C.

Actual flow depends on factors including incoming cold-water temperature, desired outlet temperature, water pressure and the operating conditions of the installation.

The number “11” in the model name therefore refers to the nominal hot-water flow class and should not be interpreted as an 11-litre storage capacity.

19.5 kW Maximum Useful Output

The Next Evo X 11 has a 19.5 kW maximum useful output.

Ariston separately specifies a 22 kW maximum nominal thermal power. These figures should be kept separate when describing the appliance because useful output and nominal thermal power represent different measurements.

This makes the model relevant to buyers searching for a 19.5 kW LPG water heater or an 11 L/min instantaneous LPG water heater.

Low-NOx LPG Water Heater

The Next Evo X 11 is designed as a Low-NOx instantaneous gas water heater.

Ariston’s current European documentation lists approximately 45 mg/kWh NOx emissions for the 11 model.

Low-NOx performance is an important specification for customers comparing modern LPG water heaters and checking applicable European requirements.

Electronic Ignition

The Next Evo X 11 uses electronic ignition.

The burner starts when hot-water demand is detected rather than relying on a continuously burning conventional pilot flame.

Ariston identifies electronic ignition as a feature of the Next Evo X SFT range.

LCD Display and Electronic Temperature Control

The Next Evo X range incorporates electronic temperature control and a user interface for monitoring and adjusting hot-water temperature.

This gives users convenient control over the domestic hot-water output.

Vertical Flue Configuration

This page is specifically optimized for customers searching for an Ariston Next Evo X 11 LPG vertical flue water heater.

Ariston specifies C13/C33 flue configurations for the Next Evo X SFT 11. The manufacturer lists a Ø60/100 mm coaxial flue system and a Ø80/80 mm split system, with maximum lengths dependent on the selected configuration.

A vertical or roof-routed flue arrangement can be appropriate where the building layout makes a horizontal wall terminal unsuitable or where an approved roof-routing arrangement is required.

The exact terminal, roof penetration, flue length, bends, clearances and installation method must follow the applicable Ariston installation documentation.

Ariston Flue Kit

Ariston’s European product information identifies flue evacuation kit 3319048 for the Next Evo X SFT range.

For this EuroFuelSupply listing, customers should verify the exact components included with the supplied configuration before installation.

Flue accessories should not be assumed to be interchangeable between different Ariston appliances.

Compact 165 mm Depth

The Next Evo X 11 has an approximately 165 mm depth, making it useful for installations where wall space is limited.

Ariston’s European documentation lists the 11 model at approximately 650 mm high, 345 mm wide and 165 mm deep in the relevant technical table.

Internal Installation

The standard Next Evo X 11 SFT is designed for internal installation.

It should not be confused with Ariston’s separate Next Evo X Outdoor range.

Keeping these configurations separate is important when choosing an appliance for a particular building and flue arrangement.

LPG Configuration

This EuroFuelSupply product is positioned for customers searching for the Ariston Next Evo X 11 LPG water heater.

Ariston’s European documentation specifically identifies the Next Evo X 11 SFT – GLP EU configuration and lists LPG among the supported gas types. The LPG EU configuration is associated with product code 3632436 in the Spanish Ariston technical table.

Always check the appliance data plate and destination-country requirements to confirm the exact permitted gas category before installation.

Energy Class A

The Next Evo X 11 is listed with Energy Class A and an M domestic hot-water load profile.

This makes it relevant to customers comparing modern instantaneous gas water heaters according to European domestic hot-water energy classifications.

Suitable Applications

Subject to professional assessment and local regulations, the Ariston Next Evo X 11 LPG may be suitable for:

• Houses
• Apartments
• Holiday homes
• Rental properties
• LPG-powered properties
• Utility areas
• Compact residential installations
• Small accommodation facilities
• Light commercial hot-water applications
• Replacement gas water-heater installations

Actual suitability depends on hot-water demand, water pressure, LPG supply, flue route and local regulations.

Ariston Next Evo X 11 Vertical vs Horizontal Flue

The core Next Evo X 11 appliance is based on the same model platform, while the important difference is the flue route and terminal arrangement.

A horizontal configuration can terminate through an approved external wall where the installation permits it.

A vertical or roof-routed configuration can be used where the approved flue arrangement requires roof termination.

The choice should be made according to the actual building layout, flue route, terminal requirements and local regulations.

EuroFuelSupply should maintain separate product pages for the horizontal and vertical configurations so customers can find the configuration that matches their installation.

Installation Requirements

Gas appliances and flue systems should be installed by an appropriately qualified professional.

Before installation, verify:

• LPG gas category
• Gas supply pressure
• Appliance data plate
• Correct vertical flue configuration
• Roof terminal requirements
• Flue length
• Number and type of bends
• Roof penetration requirements
• Required clearances
• Ventilation requirements where applicable
• Water pressure
• Gas pipe sizing
• Electrical supply
• Local gas regulations
• Local building regulations

Ariston’s European documentation specifies the permitted C13/C33 arrangements and the relevant flue dimensions and maximum lengths.

Frequently Asked Questions

Is the Ariston Next Evo X 11 available for LPG?

Yes. Ariston’s European technical documentation specifically lists the Next Evo X 11 SFT GLP EU configuration.

What is the flow rate?

The rated hot-water flow is 11 L/min at a 25°C temperature rise.

What is the output?

The maximum useful output is 19.5 kW, while maximum nominal thermal power is listed as 22 kW.

Is this an 11-litre storage water heater?

No. It is an 11 L/min-class instantaneous LPG gas water heater.

Is the Next Evo X 11 Low-NOx?

Yes. Ariston lists approximately 45 mg/kWh NOx emissions for the 11 model.

Does it use electronic ignition?

Yes. Electronic ignition is specified for the Next Evo X SFT range.

Does the Next Evo X 11 support a vertical flue?

The appliance supports the manufacturer’s C13/C33 flue configurations. This product page is specifically positioned for a vertical/roof-routed flue configuration, subject to the exact approved installation arrangement.

What flue sizes are supported?

Ariston lists Ø60/100 mm coaxial and Ø80/80 mm split flue configurations for the Next Evo X SFT range.

What is the maximum coaxial flue length?

Ariston lists up to 8 m for the Ø60/100 mm coaxial configuration under the specified installation conditions. The permitted length can be affected by the actual configuration and fittings.

Is the Next Evo X 11 suitable for indoor installation?

Yes. The standard Next Evo X SFT 11 is designed for internal installation.

Is this the same as the Next Evo X Outdoor?

No. The standard Next Evo X and Next Evo X Outdoor are separate configurations.

Is it suitable for all European countries?

Not automatically. Gas categories, certification, flue requirements and building regulations vary by destination. Confirm the exact appliance configuration before purchase and installation.

Can I install the vertical flue myself?

Gas appliance and flue installation should be carried out by an appropriately qualified professional in accordance with Ariston’s installation instructions and applicable local regulations.

Buy Ariston Next Evo X 11 LPG with Vertical Flue

The Ariston Next Evo X 11 LPG Water Heater with Vertical Flue combines 11 L/min hot-water flow, 19.5 kW useful output, Low-NOx combustion, electronic ignition, Class A energy performance and a compact internal-installation design.

It is designed for customers specifically looking for an Ariston Next Evo X 11 LPG vertical-flue water heater for a suitable European installation.

Contact EuroFuelSupply for current availability, European delivery information, trade enquiries and multiple-unit requirements.