7
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 sup-
plied with the burner.
BLAST TUBE LENGTH (B)
The length of the blast tube must be selected
according to the indications provided by the
manufacturer of the boiler, and in any case it
must be greater than the thickness of the boiler
door complete with its fettling.
For boilers with front flue passes 1) or flame
inversion chambers, protective fettling in refrac-
tory material 5) must be inserted between the
boiler fettling 2) and the blast tube 4).
This protective fettling must not compromise the
extraction of the blast tube.
For boilers having a water-cooled front the
refractory fettling 2)-5)(B) is not required unless
it is expressly requested by the boiler manufac-
turer.
SECURING THE BURNER TO THE
BOILER (B)
• Slip the thermal insulation screen (standard
equipment) onto the blast tube 4) (B).
• Place entire burner on the boiler hole
(arranged previously, see fig. (A), and fasten
with the screws given as standard equipment.
The coupling of the burner-boiler must be air-
tight.
ACCESSIBILITY TO THE INTERIOR OF
THE COMBUSTION HEAD (C)
• Remove the covering hood of the panel
board.
• Loosen the screws 1).
• Remove the extensions 3) after loosening the
cap 2).
• Remove the screws 4) and disconnect the
light oil adduction tubes 6).
Note: while unscrewing, some fuel may leak
out.
• Extract the combustion head 5).
CHOICE OF NOZZLES FOR 1ST AND 2ND
STAGE
Both nozzles must be chosen from among those
listed in Table (D).
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.
As a rule the two nozzles have equal deliveries
but the 1st stage nozzle may have a delivery
less than 50% of the total delivery when a
reduction of the counter-pressure peak is
desired at the moment of starting (the burner
allows good combustion rates also with a 33 -
100 % ratio between the 1st and 2nd stage).
Example
Boiler output = 1630 kW - efficiency 90 %
Output required by the burner =
1630 : 0,9=1812 kW;
1812 : 2 =906 KW per nozzle;
therefore, two equal, 60°, 12 bar nozzles are
required:
1° = 18 GPH - 2° = 18 GPH,
or the following two different nozzles:
1° = 15 GPH - 2° = 21 GPH.
NOTE: Instead of the nozzles given in tab. (D),
you can use the following nozzle types:
•DELAVAN B 60°;
•MONARCH PLP 70° (up to 30 GPH).
mm A B C
RL 250 MZ 230 325 - 368 M16
(A)
(B)
(C)
D455
D3945
D3946
Nozzle GPH kg/h kW
12 bar
10 bar 12 bar 14 bar
type
HAGO S-S 60°
12.0
13.0
14.0
15.0
16.0
17.0
18.0
19.0
20.0
22.0
24.0
25.0
26.0
28.0
30.0
32.0
34.0
35.0
44.16
47.84
51.52
55.20
58.88
62.57
66.25
69.93
73.61
80.97
88.33
92.00
95.69
103.05
110.41
117.77
125.13
128.81
48.73
52.79
56.86
60.92
64.98
69.04
73.10
77.16
81.22
89.34
97.47
101.53
105.59
113.71
121.83
129.95
138.08
142.14
52.96
57.38
61.79
66.20
70.62
75.03
79.44
83.86
88.27
97.10
105.93
110.34
114.75
123.58
132.41
141.24
150.06
154.48
582.36
630.89
679.42
727.95
776.48
825.01
873.54
922.07
970.60
1067.66
1164.72
1198.00
1261.78
1358.84
1455.90
1533.47
1629.31
1667.23
(D)
