Riello RLS 250/M, Installation, Use And Maintenance Instructions

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20034293
18
GB
Installation
5.9 Electrode position
5.10 Burner closing

Refit the burner to the slide bars 3)(Fig. 15) at approximately
100 mm from the sleeve 4) - burner positioned as shown in
Fig. 10 at page 16.

Insert the ignition electrode cables and then slide the burner
up to the sleeve so that it is positioned as shown in Fig. 15.

Refit screws 2)(Fig. 15) on slide bars 3).

Secure the burner to the sleeve by tightening screws 1).

Connect the oil pipes again by screwing on the two connec-
tors.

Reconnect the articulation 7) to the graduated sector 5).
5.11 Servomotor
The servomotor (Fig. 16) provides simultaneous adjustment of
the air gate valve, by means of the variable profile cam, and the
gas butterfly valve.
The servomotor rotates through 130 degrees in 33 seconds.
Do not alter the factory setting for the 5 cams; simply check that
they are set as indicated below:
Cam I : 130°
Limits rotation toward maximum position.
When the burner is at max output the gas butterfly valve must be
fully open: 90°.
Cam II : 0°
Limits rotation toward the minimum position.
When the burner is shut down the air gate valve and the gas but-
terfly valve must be closed: 0°.
Cam III : 40° (gas)
Adjusts the ignition position and the MIN output.
Cam IV : 70° (gas oil)
Adjusts the ignition position and the 1
st
stage output.
Cam V : 100°
Determines when the 2
nd
stage diesel oil valve opens.
WARNING
Make sure that the electrodes are positioned as
shown in Fig. 14.
Fig. 14
D2995
WARNING
When fitting the burner on the two slide bars, it is
advisable to gently draw out the high tension ca-
bles until they are slightly stretched.
Fig. 15
D8912
Fig. 16
D3923