Ferroli ATLAS D ECO 34 COND SI UNIT Instructions D'utilisation, D'installation Et D'entretien page 39
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ATLAS D ECO 34 COND SI UNIT
Burner adjustment
The burner is factory-set as given in table 4. The burner can be set to a different output
by acting on the pump pressure, nozzle, head adjustment, and air adjustment as per the
following paragraphs. In any case, the new adjusted output must fall within the boiler's
nominal operating range. After making any adjustments, using a combustion analyser
check that the CO
content in the fumes is between 11% and 12%.
2
Nozzle flow rate table for oil
table 4 gives the oil flow rates (in kg/h) according to the change in pump pressure and
nozzles.
N.B. - The values given below are only approximate, since nozzle flow rates can vary by
± 5%. Also, with burners having a preheater, the fuel flow rate decreases by about 10%.
Table. 4
NOZZLE
8
9
G.P.H.
1.32
1.40
0.40
15.66
16.60
1.57
1.65
0.50
18.62
19.57
1.93
2.01
0.60
22.89
23.83
2.12
2.25
0.65
25.14
26.68
2.50
2.65
0.75
29.65
31.43
2.92
3.10
0.85
34.63
36.76
3.30
3.50
1.00
39.13
41.51
Flow rate at nozzle outlet in kg/h
Pump pressure adjustment
The pump is factory-set to 12 bar. Use an oil bath gauge to check the pressure. The pres-
sure can be adjusted between 11 and 14 bar.
3
5
2
fig. 28- Pump ITALPUMP
Pump pressure (bar)
10
11
12
13
1.47
1.54
1.61
1.68
17.43
18.26
19.09
19.92
1.73
1.81
1.89
1.97
20.51
21.50
22.42
23.36
2.23
2.32
2.42
2.52
26.44
27.51
28.70
29.88
2.40
2.63
2.74
2.80
28.46
31.19
32.49
33.21
2.80
2.95
3.07
3.20
33.21
34.99
36.41
37.95
3.27
3.45
3.60
3.75
38.78
40.92
42.69
44.47
3.67
3.85
4.02
4.20
43.52
45.66
47.67
48.72
3
4
6
1
cod. 3541Q472 - Rev. 00 - 06/2021
4
14
1.75
20.75
2.05
24.31
2.64
1.
Suction Ø1/4"
31.31
2.
Return Ø1/4"
3.
Oil delivery Ø1/8"
2.91
4.
Pressure adjustment
34.51
5.
Pressure gauge connection Ø1/8"
3.33
6.
Vacuum gauge connection Ø1/8"
39.49
Combustion head adjustment
3.90
The head is adjusted by means of the screw 1, according to the indications of the pointer
46.25
2.
51.95
1
2
Air damper adjustment
After loosening the screw 3, operating the screw 1, the combustion air is adjusted ac-
cording to the indications of the pointer 2. After adjustment, lock the screw 3.
5
6
2
1
fig. 29- Pump DANFOSS
fig. 30
2
3
ARIA
M
A
AIR
4
X
AIR
2
LUFT
STOP
AIRE
1
M
N
I
fig. 31
EN
3
1
ARIA
MAX
AIR
4
AIR
LUFT
2
STOP
AIRE
1
MIN
39
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