The Benefits of Using RIELLO Ultra-Low Nitrogen Burners

A burner upgrade project at a prestigious visitor attraction in Edinburgh involved replacing the existing 25-year-old burners with Riello ultra-low nitrogen oxides (NOx) premix burners.

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The Riello RX 1.8MW premix burners, commissioned by contractor T-Squared, have shown exceptionally low NOx levels of just 9-10ppm (around 20mg/kWh) throughout the modulation range. The upgrade enabled the ageing cast-iron sectional boilers to comply with current and anticipated NOx regulations, as well as improving energy efficiency – thereby extending the life of the boilers.

“We considered several manufacturers and selected Riello on the basis of product quality and performance, technical knowledge and customer support,” explained T-Squared’s Garry Wallace.

TAU N Premix is equipped with modulating burners with total premixing combustion, which guarantee very low emissions in atmosphere and a wide turndown ratio.

The burner is equipped with gas valves with proportional opening with pneumatic control; the gas is dosed in operation of the air introduced to the combustion head which is cylindrical radiating type. The mixing of air with gas takes place inside the burner fan (the fan is variable speed) allowing correct operation too in the presence of low gas supply pressures.

The premixed flame is characterized by a compact geometry, and a low noise level, which translates into a limited sound emission to the chimney, with obvious comfort acoustic advantages.

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The modulation of the flame allows to adapt the delivery temperature according to the external temperature in order to optimize the efficiency. The flame ignition is guaranteed by an intermittent pilot flame device.

– Low polluting emissions

– Easy maintenance for total accessibility to internal components avoiding to disassemble the burner

– Equipped with the RIELLOtech Clima Comfort electronic control panel to manage cascades of boilers, complex solar systems, integration of multiple types of heat generators, two mixed zones, one direct and the production of domestic hot water

– Equipped with burner plate for premix burners

– Maximum working pressure: 6 bar.

If you want to learn more, please visit our website RIELLO Ultra-Low Nitrogen Burners.