Steady State Operation; Firing Failure - Riello RLS 300/EV FGR Installation, Use And Maintenance Instructions

5.8.1

Steady state operation

At the end of the starting cycle, the servomotor control then passes
to load control for boiler pressure or temperature.
 If the temperature or pressure is low (and the load control is
consequently closed), the burner progressively increases out-
put up to MAX.
 If subsequently the temperature or pressure increases until
the load control opens, the burner progressively decreases
output down to MIN.
 The burner shuts off when demand for heat is less than the
heat supplied by the burner in the MIN output.
 The servomotor returns to the 0° angle. The air damper closes
completely to reduce thermal dispersion to a minimum.
Every time output is changed, the servomotor automatically modi-
fies oil delivery (pressure regulator) and air delivery (fan damper).
5.8.2

Firing failure

 If the burner does not fire, it goes into lock-out within 5 sec. of
the opening of the light oil valve.
 If the flame should go out for accidental reasons during opera-
tion, the burner will lock out in 1 s.
Start-up, calibration and operation of the burner
47 GB
20102963