Working; Combustion Adjustment; Recommended Nozzles - Riello RG5S Manuel D'entretien

4.

WORKING

4.1 COMBUSTION ADJUSTMENT

In conformity with Efficiency Directive 92/42/EEC the application of the burner on the boiler, adjustment and
testing must be carried out observing the instruction manual of the boiler, including verification of the CO and CO
concentration in the flue gases, their temperatures and the average temperature of the water in the boiler.
To suit the required appliance output, choose the proper nozzle and adjust the pump pressure, the setting of
the combustion head, and the air damper opening in accordance with the following schedule.
The values shown in the table are measured on a CEN boiler (as per EN 267).
They refer to 12.5% CO
Start delaying
device pressure
Nozzle
Low-flame
GPH Angle
3.00 60°
3.50 60°
4.00 60°
4.50 60°
5.00 60°
5.50 60°
6.00 60°

4.2 RECOMMENDED NOZZLES:

Monarch type R
Delavan type W (up to 3,00 GPH)
Delavan type B (over 3,00 GPH)
Steinen type S; Danfoss type S.
TO FIT NOZZLE CARRY OUT THE FOLLOW-
ING ACTIONS, (see fig. 12)
Remove nozzle-holder assembly (1) after
loosing screws (2) and nut (3), remove the
small cables (4) from the control box and the
photoresistance (5).
Withdraw the small cables (4) from the elec-
trodes, remove the diffuser disc-holder as-
sembly (8) from the nozzle-holder assembly
(1) after loosing screw (3, fig. 13, page 7).
Screw the nozzle (9) correctly and tighten it as
shown in fig. 12.
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
2788
at sea level and with light oil and room temperature of 20 °C.
2
Pump
pressure
High-flame
bar bar
9 15
9 15
9 15
9 15
9 15
9 15
9 14
D5684
3
Combustion
Burner
head
output
adjustment
kg/h ± 4% Set-point
13.5 0
15.7 0
18.0 2
20.2 4
22.4 6
24.7 8
26.0 10
Fig. 12
S7686
6 GB
Air damper adjustment
Low-flame High-flame
Set-point Set-point
0.4 1.3
0.5 2.0
0.7 2.5
0.8 3.0
0.9 3.7
1.1 5.8
1.3 6.0
2