Combustion Head - Riello RX 70 S/PV Instructions Pour Installation, Utilisation Et Entretien

6.7

Combustion head

The combustion head comprises a highly thermal resistant
cylinder whose surface features numerous holes, encased in a
metal "mesh" (Fig. 13).
The air-gas mixture is pushed inside the cylinder and out of the
head through the holes in the perimeter.
Combustion starts when the air-gas mixture is ignited by a spark
generated by the electrode.
The metal "mesh" is the combustion head's most essential
element since it improves burner performance considerably.
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Start-up, calibration and operation of the burner
The flame developed on the surface of the head is perfectly
retained and adheres to the mesh when operating at the
maximum setting. This allows modulating ratios as high as 6:1,
avoiding the danger of flashback when modulating is at its
minimum.
The flame features an extremely compact geometry, meaning
that there is no risk of contact between the flame and parts of the
generator, consequently eliminating the possible problem of poor
combustion.
The flame's structure means that smaller combustion chambers
can be developed, designed to exploit this particular feature.
20 GB
D9714
Fig. 13