Nozzle Assembly - Riello RL 42 BLU Installation, Use And Maintenance Instructions

5.7.3

Nozzle assembly

➤ Loosen the screws 2)(Fig. 12) and remove the flameholder
unit 1), remove the plastic plugs 3) and assemble the noz-
zles: do not use any sealing products such as gaskets, seal-
ing compound, or tape.
➤ Be careful to avoid damaging the nozzle sealing seat.
➤ The nozzles must be screwed into place tightly but not to
the maximum torque value provided by the wrench.
➤ Make sure that the electrodes are positioned as shown in
Fig. 13.
➤ Finally remount the burner 4)(Fig. 14) to the slide bars 3)
and slide it up to the flange 5), keeping it slightly raised to
prevent the flameholder unit from pressing against the slide
bars 6) of the blast tube.
➤ Tighten the screws 2)(Fig. 14) on the slide bars 3) and
screw 1) that attaches the burner to the flange.
➤ If it proves necessary to change the nozzle with the burner
already fitted to the boiler, open the burner on the slide bars
as shown in Fig. 11, pag. 13, after having mounted the
extensions 16)(Fig. 6, pag. 10), and proceed as described
above.
NOTE:
The nozzle supplied may be used if it matches required de-
livery, otherwise it should be replaced with a different one
whose delivery suits the system.
20023224
Installation
D1752
D1753
D818
14 GB
Fig. 12
Fig. 13
Fig. 14