Riello RS5 Installation, Use And Maintenance Instructions page 27

HEAD ASSEMBLY REMOVING, (see fig. 8, page 9)
To remove the head assembly, carry out the following operations:
Remove the head-older assembly (1), after taking away the screws (7), disconnect the connections (3 and 5),
extract the small tube (4) and loose the screws (10).
Do not modify the setting position of the bracket-elbow during the disassembly.
REASSEMBLY OF THE HEAD SYSTEM, (see fig. 8, page 9)
Warning

During the reassembly of the system, tighten the screws (7) completely (without locking them);
then lock them with a torque wrench setting of 3 - 4 Nm.

Control that, during the working, there are not gas losses coming from the screws.

If casually the pressure test point (11) looses, fix correctly and be sure that the hole (F), placed in the
external side of the head-assembly (1) turns towards the lower part.
4.3 AIR DAMPER SETTING
WARNING
Do not carry out the first ignition with the air damper lower than set point 1.
The air damper leaves the factory set for minimum output.
To vary the setting proceed as follows:

Loosen the nut (9) and the screws (8).
 When the burner shuts down the air damper closes automatically until a max. chimney depression of 0.5
mbar is reached.
4.4 PROBE - ELECTRODE POSITIONING,
Fig. 9
1
2
3,5 ±
0,3
D4020
20020956
, (see fig. 8, page 9)
(see fig. 9)
ATTENTION
Verify that the plate (1) is always inserted in the
flattening of the electrode (2).
ELECTRODE
PLATE
PROBE
10 GB
CUP
31 ±
0,3
Lean the probe insulator against the cup