Start-Up, Calibration And Operation Of The Burner; Notes On Safety For The First Start-Up; Burner Firing; Burner Calibration - Riello RL 190/M Installation, Use And Maintenance Instructions

7

Start-up, calibration and operation of the burner

7.1

Notes on safety for the first start-up

The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
7.2

Burner firing

Before firing the burner, make sure that the air and fuel regulation
parts are workable:
 loosen the screws 4)(Fig. 29 at page 23) of the cam
2)(Fig. 29);
 loosen the nut and lock nut 5)(Fig. 28) and the two screws
8)(Fig. 28) of the pressure transformer unit and eccentric.
 Close load controls and set switch 1)(Fig. 24) to "MAN".
The burner will start and after the pre-purge stage the flame will
light.
7.3

Burner calibration

The optimum calibration of the burner requires an analysis of the
flue gases at the boiler outlet.
Adjust successively:
– Combustion head
– Servomotor, cams I - II - IV - V
– MIN burner output
– MAX burner output
– Intermediate outputs between MAX and MIN output
7.3.1

Combustion head setting

The setting of the combustion head depends exclusively on the
maximum burner delivery at which it will be operating.
Turn screw 4)(Fig. 25) until the notch shown in diagram (Fig. 26)
is level with the front surface of flange 5)(Fig. 25).
Example:
maximum light oil delivery = 150 kg/h.
Diagram (Fig. 26) indicates that for a delivery of 150 kg/h the
burner requires the combustion head to be set to approx. three
notches, as shown in Fig. 25.
7.3.2

Servomotor

The servomotor (Fig. 27) provides simultaneous adjustment of
the air gate valve, by means of the variable profile cam and the
pressure regulator.
The servomotor rotates through 130° in 42 seconds.
Do not alter the factory setting for the 5 cams; simply check that
they are set as indicated below:
130°
Cam I:
Limits rotation toward maximum position.
0°
Cam II:
Limits rotation toward the minimum position. When
the burner is shut down the air gate valve must be
closed: 0°.
20°
Cam III:
Adjusts the ignition position and the MIN output.
Cam IV-V: not utilized.
20033337
Start-up, calibration and operation of the burner
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
Notches
Max gas oil delivery - kg/h
D887
22
GB
1 2
D791
D462
Fig. 24
Fig. 25
D1985
Fig. 26
Fig. 27