Max. Dimensions - Approximate Measurements; Standard Equipment; Firing Rates - Riello RL 190/M Instrucciones De Instalación, Funcionamiento Y Mantenimiento

4.3.2

Max. dimensions - approximate measurements

D1217
mm
RL 190/M 813
4.3.3

Standard equipment

2 - Flexible hoses (L = 1340 mm)
2 - Gaskets for flexible hoses
2 - Nipples for flexible hoses
1 - Thermal insulation screen
4.4

Firing rates

During operation, burner output varies between:
➤ MINIMUM OUTPUT: area A;
➤ MAXIMUM OUTPUT: area B.
The work point may be found by plotting a vertical line from the
desired delivery and a horizontal line from the pressure in the
combustion chamber. The intersection of these two lines is the
work point which must lie within area A, for MIN output, and within
area B, for MAX output.
Burner firing rates according to air density
The FIRING RATE area values have been obtained considering
a surrounding temperature of 20 °C, and an atmospheric pres-
sure of 1000 mbar (approx. 100 m above sea level) and with the
combustion head adjusted as shown on page 8.
20024198
Technical description of the burner
A B C
366 447
The maximum dimensions of the burner are given in (Fig. 2).
Bear in mind that inspection of the combustion head requires the
burner to be opened and the rear part withdrawn on the slide
bars.
The dimensions of the open burner are indicated by position I.
Fig. 2
D E
555 712 370-528
2 - Extensions 16)(Fig. 1) for slide bars 15)(Fig. 1)
4 - Screws to secure the burner flange to the boiler: M 16 x 40
1 - Instruction booklet
1 - Spare parts list
Burner output
It may be that a burner has to operate with combustive air at a
higher temperature and/or higher altitudes.
The heating of the air and the increase in altitude produce the
same effect: the expansion of the air volume (i.e. the reduction of
its density).
The delivery of the burner fan remains essentially the same, but
the oxygen per m
fan are reduced.
It is therefore important to know if the maximum output requested
from the burner at a determinate combustion chamber pressure
remains within the firing rate of the burner even with the changed
temperature and altitude conditions.
8 GB
F G
222 430
D1975
3
of air, and the thrust (discharge head) of the
H I
1166-1285
Fig. 3