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4.7
Burner securing
Prepare a suitable lifting system.
Create a suitable hoisting system by hooking onto the rings
3)(Fig. 10), removing the fastening screws 7) securing the
cover 8) first.
Slip the thermal protection onto the blast tube 4) (Fig. 10).
4.8
Accessibility to the interior of the combustion head
Be careful as some drops of fuel may leak out dur-
ing this phase.
Open burner at hinge as illustrated in Fig. 11 after releasing
the tie rod of the head movement lever 1) and removing the 4
fastening screws 2).
Disconnect the wire 3) from the electrode.
Disconnect the tube of ignition pilot 4).
Unscrew the screw 5) after removing the gas pressure switch
(5 Fig. 5).
Extract the internal part 6) of the combustion head.
In case of replacement of biogas combustion head 6) with
LPG combustion head, use the nut and ogive from the con-
nector 59) (page 31) supplied with the burner and install them
on the new pilot tube. After assembling the same combustion
head on the burner; provide to tighten on the other side of the
elbow, already present on the pipe coupling.
4.9
Combustion head setting
In addition to varying air flow depending on the output request-
ed, the air gate valve servomotor 4) (Fig. 5) 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 open-
ing can be varied by moving the tie rod onto holes 5-6-7-8-10,
Fig. 14.
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 shows in the following table do this by
moving the tie rod onto the next highest hole numerically speak-
ing, thus increasing the combustion head's opening and hence
air delivery.
Hole lever 1)
5
5
7
10
Power Btu
From
To
5118
18766
18766
25590
25590
30025
30025
40944
Installation
Place entire burner on the boiler hole (arranged previously,
see Fig. 9), and fasten with the screws given as standard
equipment.
The coupling of the burner-boiler must be airtight.
The seal between burner and boiler must be air-
tight.
WARNING
20050808
17
GB
1
2
5
4
3
6
2
Fig. 13
Tab. H
4
5
1
6
7
5
8
10
2
D2948
Fig. 14
20060897
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