Riello was founded in 1922 and is headquartered in Legnago, Italy. Its North American plant, opened in 1980, is in Mississauga, Ontario. Riello makes burners from small monobloc units up to industrial and low-NOx models.
That range means setup varies a lot from one Riello to the next. Smaller models are often two-stage burners with fixed air settings for each stage. Larger models are fully modulating and run on electronic fuel-air controls. On low-NOx models, we tune to the manufacturer's O2 and NOx targets rather than to the lowest possible O2.
What we check on every startup or tune-up: fuel pressures against the burner's specification, the safety switches and limits, ignition and the flame signal, and the fuel-air ratio at each firing rate, measured with a calibrated combustion analyzer. You get the O2, CO, and efficiency readings before and after, in writing.
Common reasons to call: lockouts or flame failures that keep coming back, hard starts, high CO or soot, a burner that hasn't been tuned in over a year, or a burner coming back online after repairs, a fuel change, or a control replacement.
Related reading: Who Makes Commercial and Industrial Burners, Excess Air and O2 and What a Combustion Report Shows. See all of our services on the What We Do page.
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