Operation; Notes On Safety For The First Start-Up; Combustion Adjustment; Recommended Nozzles - Riello RDB1R GRANT MILTON 20 kW Installation, Use And Maintenance Instructions

7

Operation

7.1

Notes on safety for the first start-up

The first start-up of the burner must be carried out
by qualified personnel, as indicated in this manual
and in compliance with the standards and regula-
tions of the laws in force.
WARNING
7.2

Combustion adjustment

In conformity with EN 267, 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
2
the average temperature of the water in the boiler.
The combustion air is sucked from outside, there-
fore, there can be sensitive temperature varia-
tions that can influence the percentage value of
the CO . It is advisable to adjust the CO
WARNING
2
ing to the diagram.
For example: with an combustion air temperature
of 20°C, adjust the CO
The values in Tab. F are referred to 12.5% CO
with ambient temperature and gas oil at 20 ° C.
Nozzle
GPH
0.40
7.3

Recommended nozzles

The burner complies with the emission requirements set by the
EN 267 standard. To ensure continuity of emissions, it is
necessary to use the recommended nozzles.
It is advisable to replace the nozzles every year
during routine maintenance.
WARNING
The use of nozzles different to those prescribed
by the manufacturer or incorrect periodic mainte-
nance can cause emissions that exceed the limits
foreseen by the standard in force, and in extreme
cases cause harm to people or objects.
It is understood that the damage caused by failure
CAUTION
to comply with the requirements contained in this
manual are not in any way attributable to the man-
ufacturer.
7.5

Air damper adjustment

The settings indicated in the schedule are purely indicative.
Each installation however, has its own unpredictable working
conditions: actual nozzle output; positive or negative pressure in
the combustion-chamber, the need of excess air, etc.
All these conditions may require a different air-damper setting.
20166849
accord-
2
to 12.5% (± 0.2%).
2
, at sea level and
2
Pump
pressure
Angle bar
80° S 14.5
Operation
Check the correct working of the adjustment, com-
mand and safety devices.
WARNING
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
-10 -5 0
Combustion air temperature (°C)
Burner
output
kg/h ± 4%
1.7
7.3.1

Nozzle choice

To adjust the flow range in which the nozzle must operate, adjust
the minimum and maximum fuel pressure of on the back of the
jet.
7.4

Pump pressure

The pump is factory set to the values indicated. Tab. F.
16 GB
5 10 15 20 25 30
Air damper Combustion head
adjustment adjustment
Set-point
3.5
20159270
35 40 45
Fig. 18
Set-point
Fixed
Tab. F