Riello PRESS GBV, Инструкции по установке, использованию и обслуживанию, Страница: 12 / 40

20033090
10 GB
Technical description of the burner
4.4 Overall dimensions
Approximate measurements.
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burner to be opened and the rear part withdrawn on the slide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 maximum dimension of the burner when open is give by
measurement I.
Tab. C
4.5 Firing rates
The burner delivery must be selected within the range of the ad-
jacent diagram. This area is known as the FIRING RATE and pro-
vides the delivery of the burner according to the combustion
chamber pressure.
For the PRESS GBV Model, this area is delimited by:
• the 15 - 30 kg/h delivery line
• the 0 + 3 mbar combustion chamber pressure line
• the combustion chamber maximum pressure curve
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 the FIRING RATE area.
Consult page 11, for operation at different surrounding tempera-
tures and/or altitudes.
The burner can also operate in depression combustion cham-
bers.
Fig. 2
D403
A B C D E F G H I
mm 234 205 292 140 185 473 59 397 688
WARNING
The firing rate value (Fig. 3) has been obtained
considering an ambient temperature of 20 °C, an
atmospheric pressure of 1013 mbar (approx. 0 m
above sea level), and with the combustion head
adjusted as shown on page 26.
Fig. 3
C
om
bus
tio
n ch
am
be
r
pr
essu
re
mba
r
D398
kg/h