The Riello RLS 510/M MX is an automatic monobloc forced-draught Low NOx gas/light oil dual-fuel burner with progressive two-stage or modulating operation and a firing range of 660/1800–5170 kW.
Both gas and light oil support progressive two-stage or continuous modulating operation. The mechanical cam coordinates combustion air with the gas or oil modulator. Continuous modulation requires an output regulator and the corresponding temperature or pressure probe, supplied separately.
Product Specification
- Forward-curved centrifugal fan and an acoustically lined air intake.
- Precision servomotor for combustion-air adjustment.
- Adjustable Low NOx dual-fuel combustion head.
- Air-pressure and maximum gas-pressure switches.
- Mechanical-cam modulation and burner safety control.
- UV flame sensor.
- Star/delta fan motor starting.
- Separate motor-driven high-pressure oil gear pump.
- Double oil safety valves on both the supply and return circuits.
- Oil/gas selector, flame inspection window and illuminated lockout reset.
- Motor contactor and resettable thermal relay.
- Hinged opening and lifting rings.
- On/off switch and manual/automatic output selector.
Electrical and Operating Data
- Fan motor supply: 400/690 V, three-phase with neutral, 50 Hz.
- Fan motor speed: 2,900 rpm.
- Electrical protection: IP54.
- Fan motor power: 12 kW.
- Oil-pump motor power: 1.5 kW.
- Maximum electrical input: 13.9 kW on gas / 15.7 kW on oil.
- Modulation ratio at maximum output: 5:1.
- Burner control: LFL1.333.
- Light oil viscosity: 4–6 mm²/s (cSt) at 20°C.
- Duty: intermittent, with at least one shutdown every 24 hours.
Standard Equipment
- Gas-train adaptor and flange gasket.
- Four flange screws, four boiler mounting screws and a thermal screen.
- Two flexible oil hoses and two pump connection nipples with gaskets.
- Installation, operation and maintenance manual; spare-parts catalogue.
