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Idiomas disponibles
Idiomas disponibles
GPH
60
TECNO 34-L
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
4.50
TECNO 44-L
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.50
4.00
4.50
5.00
5.50
6.00
(1) light oil:
density 0.84 kg/dm
viscosity 4.2 cSt/20 °C
temperature 10 °C
(A)
D458
(B)
3
1
2
(D)
(E)
1
kg/h
kW
(1)
12 bar
10 bar
12 bar
14 bar
3.9
4.3
4.7
51.0
64.0
4.8
5.4
5.8
7.0
77.0
5.8
6.5
7.5
8.2
89.0
6.8
8.5
9.2
100.8
7.7
8.6
9.5
10.4
112.7
9.6
10.6
11.5
125.7
10.7
11.8
12.8
139.3
11.5
12.7
13.8
150.6
12.4
13.7
14.9
162.5
13.5
14.8
16.1
175.5
15.6
17.2
18.7
203.5
17.3
19.1
20.7
226.5
5.8
6.5
7.0
77.0
6.8
7.5
8.2
89.0
7.7
8.5
9.2
100.8
8.6
9.5
10.4
112.7
9.6
10.6
11.5
125.7
10.7
11.8
12.8
139.3
11.5
12.7
13.8
150.6
13.5
14.8
16.1
175.5
15.4
17.0
18.4
201.6
226.5
17.3
19.1
20.7
23.0
251.4
19.2
21.2
25.3
276.3
21.1
23.3
25.5
27.7
302.4
23.1
3
D590
4
5
D3869
3
2
CHOICE OF NOZZLES FOR 1st AND 2nd
STAGE
Both nozzles must be chosen from among those
listed in table (A).
The first nozzle determines the delivery of the
burner in the 1st stage.
The second nozzle works together with the 1st
nozzle to determine the delivery of the burner in
the 2nd stage.
The deliveries of the 1st and 2nd stages must
be contained within the value range indicated on
page 2.
Use nozzles with a 60° spray angle at the rec-
ommended pressure of 12 bar.
The two nozzles usually have equal deliveries,
but the 1st stage nozzle may have the following
specifications if required:
• a delivery less than 50% of the total delivery
whenever the back-pressure peak must be
reduced at the moment of firing;
• a delivery higher than 50% of the total deliv-
ery whenever the combustion during the 1st
stage must be improved.
Example with TECNO 34-L
Boiler power = 270 kW - efficiency 90%
Power required by the burner =
270 : 0.9 = 300 kW
300 : 2
therefore, two equal, 60°, 12 bar nozzles are
required:
1° = 3.00 GPH - 2° = 3.00 GPH,
or the following two different nozzles:
1° = 2.50 GPH - 2° = 3.50 GPH,
or:
1° = 3.50 GPH - 2° = 2.50 GPH.
NOZZLE ASSEMBLY
At this stage of installation the burner is still dis-
assembled from the blast tube; it is therefore
possible to fit two nozzles with the box spanner
1) (B) (16 mm), after having removed the plastic
plugs 2)(B), fitting the spanner through the cen-
tral hole in the flame stability disk. Do not use
any sealing products such as gaskets, sealing
compound, or tape. Be careful to avoid damag-
ing the nozzle sealing seat. The nozzle must be
screwed into place tightly but not to the maxi-
mum torque value provided by the wrench.
The nozzle for the 1st stage of operation is the
one lying beneath the firing electrodes fig. (C)
Make sure that the electrodes are positioned as
shown in fig. (C).
(C)
Finally remount the burner 4)(D) to the slide
bars 3) and slide it up to the flange 5), keeping it
slightly raised to prevent the flame stability disk
from pressing against the blast tube.
Tighten the screws 2) on the slide bars 3) and
screw 1) that attaches the burner to the flange.
If it proves necessary to change a nozzle with
the burner already fitted to the boiler, proceed
as outlined below:
- Open the burner on its guides as shown in
fig. (C) p.5.
- Remove the nuts 1)(E) and the diffuser disc
assembly 2)
- Use spanner 3(E) to change the nozzles.
D3868
6
= 150 kW per nozzle
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