24
Supply pressure (flow pressure)
Steps
For natural gas
For LPG
Below 10 mbar (1.0 kPa)
Below 25 mbar (2.5 kPa)
Do not commission the boiler. Notify the gas supply util-
ity or LPG supplier.
10 to 33 mbar
(1.0 to 3.3 kPa)
25 to 57.5 mbar
(2.5 to 5.75 kPa)
Start the boiler.
Above 33 mbar (3.3 kPa)
Above 57.5 mbar
(5.75 kPa)
Connect a separate gas pressure governor upstream of
the system and set it to the nominal pressure (see type
plate). Notify the gas supply utility or LPG supplier.
Reducing the maximum heating output
The maximum heating output can be reduced accord-
ing to the system requirements.
0
1.
Tap
MODE
.
0
2.
/ until
CONFI
flashes.
0
3. OK
to confirm
"P" is displayed in the l.h. display area. The r.h.
display area flashes.
0
4.
Use / to select "12".
0
5. OK
to confirm
"1" flashes in the l.h. display area.
0
6.
Use / to select "2".
0
7. OK
to confirm
The value of the selected maximum heating out-
put, in % of the upper heating output, flashes in
the r.h. display area.
0
8.
Use / to select the required max. heating output.
See the following table.
Note
The figures relate to natural gas G 20. Balanced
flue pipe
7
60/100 mm, 1 m long.
0
9. OK
to confirm. The selected value is adopted.
10.
Check the selected heating output by measuring
the gas throughput.
Heating output in kW Setting in %
Rated heating output in kW
26
35
35
—
90
34
—
87
33
—
85
32
—
82
31
—
80
30
—
77
29
—
74
28
—
72
27
—
69
26
80
67
25
77
64
24
74
62
23
71
59
22
68
56
21
65
54
20
61
51
19
58
49
18
55
46
17
52
44
16
49
41
15
46
38
14
43
36
13
40
33
12
37
31
11
34
28
10
31
26
9
28
23
8
25
20
7
22
18
Commissioning, inspection, maintenance
Checking the static pressure and supply pressure
(cont.)
5697789
Summary of Contents for Vitodens 111-W
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