Nozzle Assembly - Riello RL 190/M Installation, Use And Maintenance Instructions

5.9.3

Nozzle assembly

At this stage of installation the burner is still disassembled from
the blast tube; it is therefore possible to fit the nozzle with the box
spanner 1)(Fig. 13), fitting the spanner through the central hole in
the flame stability disk.
Do not use any sealing products such as gaskets,
sealing compound, or tape.
Be careful to avoid damaging the nozzle sealing
WARNING
seat.
Make sure that the electrodes are positioned as shown in Fig. 14.
Finally refit the burner 3)(Fig. 15) on the slide bars 2) and slide it
up to the flange 5), keeping it slightly raised to prevent the flame
stability disk from pressing against the blast tube.
Tighten the screws 1) on the slide bars 2) and screw 4) that at-
taches the burner to the flange.
If it proves necessary to change a nozzle with the burner already
fitted to the boiler, proceed as outlined below:
 retract the burner on its slide bars as shown in Fig. 10 at
page 15);
 remove the nuts 1)(Fig. 16) and the disk 2);
 use spanner 3)(Fig. 16) to change the nozzles.
20033337
Installation
D1977
D1222
16
GB
D1220
D856
Fig. 13
Fig. 14
Fig. 15
Fig. 16