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ATLAS D ECO SI UNIT
4. SERVICE AND MAINTENANCE
All adjustment, conversion, commissioning and maintenance operations described be-
low must only be carried out by Qualified Personnel (meeting the professional technical
requirements prescribed by current regulations) such as those of the Local After-Sales
Technical Service.
FERROLI declines any liability for damage and/or injury caused by unqualified and un-
authorised persons tampering with the unit.
4.1 Adjustments
TEST mode activation
Press the heating buttons (details 3 and 4 - fig. 1) together for 5 seconds to activate the
TEST mode. The boiler switches on irrespective of the system or DHW request.
The heating symbol (detail 24 - fig. 1) and DHW symbol (detail 12 - fig. 1) flash on the
display.
fig. 24 - TEST mode
To deactivate the Test mode, repeat the activation sequence.
The TEST mode is automatically disabled in any case after 15 minutes.
Burner adjustment
The burner is factory-set as given in table 2. 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 2 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. 2
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 (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
cod. 3541Q542 - Rev. 00 - 04/2021
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.
5
14
1.75
4
20.75
2.05
24.31
2.64
31.31
2.91
34.51
3.33
1.
Suction Ø1/4"
39.49
2.
Return Ø1/4"
3.90
3.
Oil delivery Ø1/8"
4.
Pressure adjustment
46.25
5.
Pressure gauge connection Ø1/8"
6.
Vacuum gauge connection Ø1/8"
51.95
Combustion head adjustment
The head is adjusted by means of the screw 1, according to the indications of the pointer 2.
1
2
3
2
1
fig. 25- Pump ITALPUMP
5
2
1
fig. 26- Pump DANFOSS
fig. 27
EN
3
4
6
3
6
35
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