Combustion Head Setting; Electrodes Adjustment - Riello RG2D Montage- Und Bedienungsanleitung

B
Fig. 12
Remove nozzle-holder assembly (1) after loos-
➤
ing screws (2) and nut (3), remove the small ca-
b l e s ( 4 ) f r o m t h e c o n t r o l b o x a n d t h e
photoresistance (5).
Withdraw the small cables (4) from the elec-
➤
trodes, remove the diffuser disc-holder assem-
bly (8) from the nozzle-holder assembly (1) after
loosing screw (3, fig. 13).
Screw the nozzle (9) correctly and tighten it
➤
as shown in figure.
In the long head version the socket wrench (10)
➤
should lock the extension part that carries the
nozzle.
ATTENTION
During the reassembly of the nozzle-holder as-
sembly screw the nut (3) as shown in the figure
below.
TIGHTEN WITHOUT MOVING
BACKWARDS TO THE END

4.3 COMBUSTION HEAD SETTING

(See fig. 12)
It depends on the output of the burner and is car-
ried out by rotating clockwise or counterclockwise
the setting screw (6) until the set-point marked on
the regulating rod (7) is level with the outside
plane of the nozzle-holder assembly (1).
In the sketch the combustion head is set for an output of 1.50 GPH at 15 bar. The set-point 3 of the regulating
➤
rod (7) is at the same level with the outside plane of the nozzle-holder assembly (1) as shown in the schedule.

4.4 ELECTRODES ADJUSTMENT (

ATTENTION
Lean the diffuser disc-holder as-
sembly (1) on the nozzle-holder
(2) and lock it by screw (3). For
prospective adjustments loosen
screw (4) and m ove the elec-
trodes assembly (5).
To have access to the electrodes
carry out operation as described in
chapter 4.2 (page 6) "RECOM-
MENDED NOZZLES".
1914
D5684
3
see fig. 13)
Fig. 13
10
B
Fig. 12
0
4.5
– 0.5 mm
4
5
3 2
D5342
7 GB
S7216
WARNING
MEASURES MUST BE
RESPECTED
1
4 – 5
mm