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(A)
(B)
GPH
1°
2°
2,25
+
1,50
2,50
+
1,75
2,75
+
1,75
3,00
+
2,00
3,00
+
2,25
3,50
+
2,25
3,50
+
2,50
4,00
+
2,75
4,00
+
3,00
(1) We get the indicated delivery when both nozzles are working and light
oil has the following characteristics:
3
Density 0,84 kg/dm
(C)
kg/h (1)
12 bar
10 bar
12 bar
14 bar
14,4
15,9
17,3
16,3
18,0
19,6
17,3
19,1
20,7
19,2
21,2
23,0
20,2
22,3
24,2
22,1
24,4
26,5
23,0
25,4
27,7
25,9
28,6
31,1
26,9
29,7
32,3
- Viscosity 4,2 cSt/20 °C - Temperature 10 °C.
D587
D588
kW
189
213
226
251
264
289
301
339
352
5
INSTALLATION
BOILER PLATE (A)
Drill the combustion chamber locking plate as
shown in (A).
The position of the threaded holes can be
marked using the thermal screen supplied with
the burner.
BLAST TUBE LENGTH (B)
The length of the blast tube must be selected ac-
cording to the indications provided by the manu-
facturer of the boiler, and in any case it must be
greater than the thickness of the boiler door com-
plete with its fettling. The range of lengths avail-
able, L, is as follows:
Blast tube 7):
• short 216 mm
• long 351 mm
For boilers with front flue passes 10) or flame in-
version chambers, protective fettling in refractory
material 8) must be inserted between the boiler's
fettling 9) and the blast tube 7).
This protective fettling must not compromise the
extraction of the blast tube.
For boilers having a water-cooled front the refrac-
tory fettling 8)-9)(B) is not required unless it is ex-
pressly requested by the boiler manufacturer.
SECURING THE BURNER TO THE BOILER (B)
Disassemble the blast tube 7) from the burner 4)
by proceeding as follows:
- Remove the screws 2) from the two slide bars 3).
- Remove the screw 1) fixing the burner 4) to
the flange 5).
- Withdraw the blast tube 7) complete with
flange 5) and slide bars 3).
Secure flange 5)(B) to the boiler plate interpos-
ing the supplied gasket 6). Use the 4 supplied
screws provided after having protected the
thread with antiscruffing products (high-tempera-
ture grease, compounds, graphite). The burner-
boiler seal must be airtight.
CHOICE OF NOZZLES
Choose the couple of nozzles among those giv-
en in table (C).
Use nozzles with a 60° spray angle at the recom-
mended pressure of 12 bar.
When the burner fires only the first nozzle works.
Its delivery is higher than that of the second noz-
zle in order to assure a good flame stabilisation
to the stability disk, though the fan delivery has
been adjusted for both working nozzles.
Whenever ignition takes place with unusual
noise or pulsations, you should reduce the first
nozzle delivery making sure that the flame stabi-
lisation is still satisfactory.
Subsequently also the second nozzle starts
working.
The burner»s operating delivery consists of the
sum of the two nozzles deliveries.
Example
Boiler output = 230 kW
Efficiency 90 %
Output required by the burner =
230 : 0,9 = 255 kW
In table (C) the following nozzles are recom-
mended:
1° = 3,0 GPH + 2° = 2,0 GPH - 60° - 12 bar.
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