Riello DB 4 LSM C13, Инструкции по установке, использованию и обслуживанию

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14
5
Preparation for start up
5.1 Combustion head adjustment
In addition to varying air flow depending on the output requested, the air gate valve servomotor 7)(Fig. 2) by means of a lifting
assembly, varies the setting of the combustion head. This system allows an optimal setting even at a minimum firing rate.
For the same servomotor rotation, combustion head opening can be varied by moving the tie rod onto holes 1-2-3 (Fig. 15).
The choice of the hole (1-2-3) to be used is decided on the basis of diagram in Fig. 16 against the required maximum output.
Setting is pre-arranged in the plant for the maximum run (hole 3).
When dealing with boilers featuring a strong back pressure, if air delivery is insufficient even with the damper fully open, you can
use a different setting to that illustrated in diagram in Fig. 16, do this by moving the tie rod onto the next highest hole numerically
speaking, thus increasing the combustion head’s opening and hence air delivery.
Fig. 16
Fig. 15
D8419
N° Hole
D7905
1600 2000 2400 2800 3200 3600 4000 4400
k W
4800 5200
3
2
1
0
5600 6000
kW
Maximum burner output