Riello manufactures a comprehensive range of gas, oil and dual fuel burners for residential, commercial and industrial applications, for single stage, two stage and modulating operation. They also manufacture gas boosters for applications where the mains gas pressure available needs to be increased.

Since early 1920’s Riello was the first company to adapt domestic light oil burners for use in bakers’ ovens and other specialist applications. Through extensive innovation, expansion and development at Riello’s Combustion Research Centre, the Company continue to increase in scope and size to present day.

Now, Riello has achieved primacy in Europe with its pre-mix monobloc burners, combining high efficiency with very low NOx emissions.

Riello – Boiler production plant

Overview of the Riello production plant where high / low water content and traditional condensing boilers are produced.

What is Riello today? To get to know it, you have to go through a journey of its 100-year history.

BURNERS FOR OVENS

The story of Riello began with the development of burners for producing bread. After a period of more than 85 years, during which the company has continuously pursued high standards of quality, reliability and energy savings, Riello S.p.A., under the trademark Riello Burners, offers a complete range of burners and accessories for the combustion of gas and light oil, designed for the equipment for the artisan and industrial production of bread, pizzas and every type of leavened product and confectionery.

PRODUCT OVERVIEW

Together with RIELLO we are always ahead of the curve with Innovation and decarbonisation goals!

MONOBLOC BURNER RANGE

Light Oil burners

One Stage

Two Stage

PRESS P 450 T/G

The PRESS T/G series of burners covers a firing range from 830 to 5340 kW.

Available in 4 different models, these burners are particularly well suited for matching with pressurized chamber boilers.

For their characteristics, they find application in big civil plants for domestic heating or in industrial applications where thermal load is repetitive and predictable.

A hydraulic ram exclusive system, with 3 adjustable positions, regulates dampers opening, allowing air passage in relation to output required: in this way flame stability is optimized in every working point, with micro-regulation available.

The burners are fitted with a microprocessor-based burner safety control box which supplies indication of operation and diagnosis of fault cause.

RL 190/M

The RL/M series of burners covers a fi ring range from 166 to 2431 kW, and they have been designed for use in hot or superheater water boilers, hot air or steam generators, diathermic oil boilers.

Operation can be “two-stage progressive” or, alternatively, “modulating” with the installation of a PID logic regulator and respective probes. RL/M series burners guarantees high efficiency levels in all the various applications, thus reducing fuel consumption and running costs. Optimization of sound emissions is guaranteed by the use of fans with forward inclined blades and sound deadening material incorporated in the air suction circuit.

The exclusive design ensures reduced dimensions, simple use and maintenance. A wide range of accessories guarantees elevated working flexibility.

Heavy Oil burners

40 N20

The Riello 40 N series of one stage heavy oil burners, is a complete range of products developed to respond to any request for the use of heavy oil in heating systems and light
industrial processes. The Riello 40 N series is available in two different models, with an output ranging from 34 to 217 kW, divided into two basic structures.

All the models use many components designed by Riello for the Riello 40 series but are fitted with special components for heavy oil combustion. The high-quality level guarantees safe working. In developing these burners, special attention has been paid to reducing noise, to the ease of installation and adjustment, to reducing the size in order to facilitate installation in any kind of boiler on the market.

All the models are conformed to EMC European Directives, for Low Voltage and Machinery.

PRESS 100N

The PRESS N series of burners covers a firing range from 85 to 1140 kW and they have been designed for use in civil installations of average dimensions, like building areas and large apartment groups or for use in industrial applications, like small or medium plants. Operation is two-stage; a servomotor adjusts automatically air damper opening, to obtain the right air delivery on both stages.

The combustion head, that can be set on the basis of required output, allows optimal performance ensuring good combustion and reducing fuel consumption and is available in two different length to be selected on the basis of specific application requirements. In basic version the burners are supplied for use with heavy oil 7°E viscosity, but they can be supplied with higher viscosity oil with a specific heaters kit.

Simplified maintenance is achieved by the slide bar system, which allows easy access to all of the essential components of the combustion head.

PRESS 450 T/N

The PRESS T/N series of burners covers a firing range from 320 to 5130 kW. They have been designed in three versions for use in commercial and industrial installations, to burn different oil viscosity from 7 up to 60 °E @ 50°C. Operation is three-stage, thus making these burners suitable for installations that have variable but predictable heating requirements.

A servomotor adjusts automatically air damper to the opening value, determined to obtain always the necessary fuel consumption. Every model of PRESS T/N series is available in two different combustion head length (short or long head) to be selected on the basis of specific application requirements. An electric preheater has been fitted to maintain the oil at the correct atomizing temperature at maximum output and special heaters kits are separately supplied for burning high viscosity oil.

Simplified maintenance is achieved by the Riello designed slide bar system, which allows easy access to all of the essential components of the combustion head.

PRESS 450 P/N

The PRESS P/N series of burners cover a firing range from 400 to 5130 kW.
Operation can be “two stage-progressive” or, alternatively, “modulating” with the installation of a PID logic regulator and respective probes, which guarantees a turn down ratio of 3:1.

The versatility of this range makes the burner well suited for use on steam boilers where the load factor is subject to wide variations, on thermal oil boilers and on boilers for particular heating plants, as hospitals or similar.

Simplified maintenance is achieved by the Riello designed slide bar system, which allows easy access to all of the essential components of the combustion head.

Natural & LPG Gas Burners

Gulliver BS

The Riello Gulliver BS series of one stage gas burners, is a complete range of Low NOx emission products, developed to respond to any request for home heating, conforming to
the most severe standards regarding the reduction of polluting emissions.

This series of burners is available in four different models with an output ranging from 16 to 246 kW, divided in four different structures.

All the models use the same components designed by Riello for the Gulliver series. The high-quality level guarantees safe working. The Gulliver BS burners are fitted with a microprocessor – based flame control panel, with diagnostic functions. In developing these burners, special attention was paid to reducing noise, the ease of installation and adjustment, to obtaining the smallest size possible to fit into any sort of boiler available on the market.

RS 34

The RS burners series covers a fi ring range from 70 to 90 kW, and it has been designed for use in low or medium temperature hot water boilers, hot air or steam boilers, diathermic oil boilers.
Operation is “two-stage progressive”; the burners are fitted with a microprocessor control panel which supplies indication of operation and diagnosis of fault cause.

The elevated performance of the fans and combustion head, guarantee flexibility of use and excellent working at all fi ring rates.

The exclusive design ensures reduced dimensions, simple use and maintenance. A wide range of accessories guarantees elevated working flexibility.

GAS 9 P/M

The GAS P/M series cover a firing range from 80 to 4885 kW.
Operation is featured by progressive two stage operation or full modulation, with an advanced modulating control system and probes.

The burners of GAS P/M series are well suited for applications requiring versatility of control (process, steam, refrigerating absorption) where a variable output is needed.

Due to their metal sheet structures, they are specifically suitable for process applications where plastic materials could be easily damaged or deformed.

Simplified maintenance is achieved by sliding bars which permit the access to the combustion head without need of removing the burner from the boiler.

RS 44/M

The RS/M burners series covers a firing range from 70 to 2650 kW, and it has been designed for use in low or medium temperature hot water boilers, hot air or steam boilers, diathermic oil boilers.

Operation can be “two-stage progressive” or, alternatively, “modulating” with the installation of a PID logic regulator and respective probes.

RS/M burners series guarantees high efficiency levels in all the various applications, thus reducing fuel consumption and running costs.

The exclusive design ensures reduced dimensions, simple use and maintenance. A wide range of accessories guarantees elevated working flexibility.

Dual Fuel Burners

RLS 28

The RLS series of burners covers a firing range from 100 to 1395 kW, and they have been designed for use in hot or superheater water boilers, hot air or steam generators, diathermic oil boilers.

Operation is “two stage”; the burners are fitted with an electronic device STATUS PANEL, which supplies complete diagnostic: hour meter, ignition meter, identification of trouble shooting.
Optimization of sound emissions is guaranteed by the use of fans with forward inclined blades and sound deadening material incorporated in the air suction circuit.

The elevated performance of the fans and combustion head guarantee flexibility of use and excellent working at all firing rates.

The exclusive design ensures reduced dimensions, simple use and maintenance. A wide range of accessories guarantees elevated working flexibility.

GI/EMME 4500

The GI/EMME 1400-4500 series of burners covers a firing range of 407 to 4650 kW. They have been designed for high output users and they are suitable for matching with every kind of boilers, with normal or pressurized combustion chamber.

Operation can be “two-stage progressive” or, alternatively, “modulating” with the installation of a PID logic regulator and respective probes. Two options of operation are available: only gas and only light oil, thus settable by a manual switch.

Light oil circuit is fitted with his own electric motor:
this permits pump-stop during gas operation preventing danger of pumping seizure and avoiding oil circulation. A wide range of accessories and gas trains suitable to the burners guarantee an elevated working flexibility.

ENNE/EMME 4500

The ENNE/EMME 1400-4500 series of burners covers a firing range from 407 to 5000 kW.
They have been designed for high output users and they are suitable for matching with every kind of boilers, with normal or pressurized combustion chamber.

Operation can be “two-stage progressive” or, alternatively, “modulating” with the installation of a PID logic regulator and respective probes. Two fuel options are available: only gas and only heavy oil, thus settable by a manual switch.

Heavy oil circuit is fitted with his own electric motor: this permits pump stop during gas operation preventing danger of pumping seizure and avoiding oil circulation. A wide range of accessories and gas trains suitable to the burners guarantee an elevated working flexibility.

Low NOx Burners

RX S/VP SERIES

Riello continues to innovate into the future with smart sustainable solutions for ovens and equipment for the artisan and industrial production of bread, all kinds of leavened products and pastry-making.

Riello Burners RX gas burner series, completely designed and developed by Riello Burners for premix combustion technology, is the best answer to low polluting emissions and it allows to achieve high modulating turn down ratios. The RX series burner operation can be “two stages progressive” or alternatively “modulating” with the installation of a PID logic regulator and respective probes. The RX series burners electronic controls are designed with modular concept in order to offer a highly flexible configuration dependant on the application.

RL 42 BLU

The Riello Gulliver BS series of one stage gas burners, is a complete range of Low NOx emission products, developed to respond to any request for home heating, conforming to
the most severe standards regarding the reduction of polluting emissions.

This series of burners is available in four different models with an output ranging from 16 to 246 kW, divided in four different structures.

All the models use the same components designed by Riello for the Gulliver series. The high-quality level guarantees safe working. The Gulliver BS burners are fitted with a microprocessor – based flame control panel, with diagnostic functions. In developing these burners, special attention was paid to reducing noise, the ease of installation and adjustment, to obtaining the smallest size possible to fit into any sort of boiler available on the market.

GULLIVER BS3-M

The Riello Gulliver BS/M series of two stage, progressive or modulating gas burners, is a complete range of Low NOx emission products, developed to respond to any request for heating, conforming to the most severe standards regarding the reduction of polluting emissions.

This series of burners is available in three different models with an output ranging from 49 to 250 kW, divided in three different structures.

All the models use the same components designed by Riello for the Gulliver series. The high-quality level guarantees safe working. In developing these burners, special attention was paid to reducing noise, the ease of installation and adjustment, to obtaining the smallest size possible to fit into any sort of boiler available on the market.

Two stage operation guarantees high level performance from the thermal unit. All the models are approved by the EN 676 European Standard, conform to European Directives, Gas Appliance, EMC, Low Voltage, Boiler Efficiency.

RLS 300/BP

RLS/BP MX series burners are characterized by a modular monoblock structure that means all necessary components can be combined in a single unit thus making installation easier, faster and, above all, more flexible.

The series covers a firing range from 1250 to 4500 kW, and they have been designed for use in hot water boilers, overheated water boilers as well as steam boilers. Burners working is 2 stages on the oil side and two stages progressive on the gas side. Alternatively, the gas working can be modulating with the installation of a PID logic regulator. Using a particular proportioning gas valve, the burner keeps the desired air/gas ratio in every working condition.

The innovative combustion head which is able to reach good performances in term of Low NOx either during gas working or light oil working and reducing noise.

INDUSTRIAL BURNER RANGE

DB 4 – 6 – 9 – 12 – 16 – 20

The new DB burners platform represents the evolution in Riello Burners industrial product range. They are dual block burners for application in big plants (district heating, hospitals) as well as in food, chemicals, textile industry for matching with hot water boilers, steam and thermal oil generators. DB series burners can be supplied with electronic or mechanical air-fuel ratio control according to customer specification. DB 9-12-16-20 are equipped with pilot ignition, while for DB 4-6 models it can be supplied on demand. DB series can work with pre-heated air up to 150°C as standard, up to 250°C with special construction. New variable geometry combustion head allows to reach < 80 mg/kWh NOx emission on natural gas operations. An hinge system for easier combustion head maintenance is available on all models. As part of the offer, various accessories (air fan, control panels, high pressure gas train, etc) are available.

ER 4 – 6 – 9 – 12 – 16 – 20 – 25 – 32

The industrial burners ER series are designed especially for water tube boilers used in big civil installations and industrial processes with a remarkable thermal demand. These burners allow to realise a modular and flexible combustion system adding a preparation fuel unit (regulation pressure group set, preheating/pumping oil station), a gas train, a control panel and a fan. Preheated air can also be used as in the oil diathermic generators and other heat recovery systems. The modulating regulation always allows to reach a wide modulation ratio and optimal fluid-dynamics conditions for a good combustion.

Thermo Processing burners

BP R Series 5 – 1,450 kW power output

The burners of the BP R series were specifically studied and realized in order to obtain a combustion apparatus with the maximum efficiency, working in extreme flexibility and with possibility of every kind of assembling configuration. The BP R burner series has been designed to maintain maximum efficiency in extreme situations. Its flexible configuration makes it very versatile. These burners can easily be used in various situations, such as:
Direct and indirect fired applications & re-circulating and non, re-circulating applications.
Wide turndown ratio, up to 1:30. Reduced overall dimensions. Clean combustion with new fast mixing combustion head. Reduced flame length. Available with On-Off, Two-stage High-Low, Modulating fixed air or Modulating air/gas progressive operations. Easy installation, adjustment and maintenance.
BP R burners are designed to be used in medium-low temperature industrial processes, commonly used on air heating thermal equipment. The burner can be used in all types of kilns, suitable for oxidative stoichiometric or reducing combustion.

BP N Series burner 150 GVS 88 – 6,000kW high/average speed gas burner

The BP N 150 GVS gas burner is a blown-air burner which can operate with natural gas, LPG, lean gas and gas with low calorific power (on request).
Burner operation may be automatic or semiautomatic, and burner is equipped with electric ignition and detection electrode. This burner is classified as a “high/medium speed gas burner”, with exhaust gases speed coming out from the combustion chamber racing from few m/s to 100 m/s, or even higher speed according to the outlet diameter of the burner cone. Combustion air temperature may range from room temperature to 100 °C.
Max. thermal power is 1.750 kW (1.500 Mcal/h) and min. thermal power is 88 kW (75 Mcal/h).
Because of its flexibility, this burner may be adjusted with a wide capacity range up to a 20:1 ratio. Can be used in all types of kilns, suitable for oxidative, stoichiometric or reducing combustion

HYDROGEN & BIOFUELS: FOR A ZERO-EMISSION FUTURE

Towards an Energy Transition

The growing worldwide attention to climate change, combined with the definition of a roadmap to make Europe the first continent with zero climate impact, as envisaged by the objectives linked to the Green Deal, in addition to the role played by renewables and the new opportunities offered by ‘hydrogen are the factors that are orienting the world energy scene towards a modern, energy-efficient circular economy model.

The role of green hydrogen in energy-intensive industries

How electrolysis works:

1. The water used in the electrolysis process must contain salts and minerals to conduct electricity
2. Two electrodes are immersed in water and connected to the energy source, which applies a direct current
3. Dissociation between hydrogen and oxygen occurs when the electrodes extractions with an opposite electrical charge
4. During electrolysis, an oxide reduction reaction takes place due to the effect of electricity

Green hydrogen, obtained by electrolysis of water with the use of electricity produced from “discontinuous” renewable sources such as wind power or photovoltaics, will play a decisive role in the decarbonisation of energy-intensive industries such as aviation and maritime, steel and chemical industries. The new Riello burners have been tested to operate with 100% hydrogen with the aim to reach up to 3 MW output for use in experimental applications with commercial and industrial partners.

Types of Hydrogen

In the future, the expected decrease in the costs of electrolyzers, the technological progress of renewable energy plants and the consequent reduction in the cost of the kWh produced will make it possible to create large-scale green Hydrogen production plants. The production of green hydrogen can therefore represent a way of transforming, accumulating and reusing the energy produced by renewable sources that are “discontinuous” by their nature (such as wind power and photovoltaics).

THE RIELLO OFFER

Riello launched an ambitious project in 2019 for the development of a range of blown burners and boilers (condensing boilers combined with burners), specifically developed to operate in full efficiency and safety with green hydrogen.

Thanks to the excellent results achieved, the new Riello boilers powered by 100% hydrogen are now being developed to reach up to 3 MW and to be used in experimental applications with commercial and industrial partners.

BITUMEN TANKERS

Bitumen tankers are fitted with burners and used for the transportation of different types of bulk liquid-like asphalt/bitumen products (oil/petroleum).

Our burners maintain the temperature of the bitumen at the desired level to ensure ease of offloading.

The Riello 40 F20 is often used for this application.

Riello burner installation – OEM (CA Muller)