Combustion Head Adjustment - Riello PRESS 140 P/N Installation, Use And Maintenance Instructions

7.5

Combustion head adjustment

The adjustment of the combustion head is obtained in function of
the maximum output indicated in the diagrams.
Example with PRESS 140 P/N burner:
The burner must be combined with a 1,100,000 kcal/h boiler.
Considering a 90% efficiency, it is required to develop 1,450 kW,
namely to burn approximately 125 kg/h.
Diagram in Fig. 15 on page 20 shows that with an average
delivery pressure of 25 bar, you obtain for 125 kg/h:
– nozzle type W2 - 130 - 50°
– maximum pressure on return line of 19.2 bar.
Diagram Fig. 27 shows that the combustion head must be
adjusted to notch 8.5.
Burner 140
Notch 8.5
The adjustment is performed by turning the screw A until the
notch, shown in the diagram, matches the surface of bush B.
D2046
Turbulator
Ring
PRESS 140 P/N
No. notches
Maximum output kg/h
Start-up, calibration and operation of the burner
200 300 450
8 7 5.5
D2003
B
No. notches
A
Fig. 26
D2002
Fig. 27
No. notches
Maximum output kg/h
No. notches
Maximum output kg/h
No. notches
Turbulator with ring
Maximum output kg/h
29 GB
PRESS 200 P/N
PRESS 300 P/N
PRESS 450 P/N
Turbulator without ring
D2020
Fig. 28
D2036
Fig. 29
D2045
Fig. 30
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