3.
c
press this button again,
"
Außentemperatur
" (outside
temperature) is displayed.
4.
b
for the required language.
5.
d
to confirm.
Checking the gas type
The boiler is equipped with an electronic combustion control unit that adjusts
the burner for optimum combustion in accordance with the prevailing gas qual-
ity.
&
Consequently, for natural gas there is no adjustment required across the
entire Wobbe range.
The boiler can be operated in the Wobbe index range 10.0 to 16.1 kWh/m
3
(36.0 to 58.0 MJ/m
3
).
&
Convert the burner for operation with LPG (see "Gas type conversion" on
page 15).
1.
Determine the gas type and Wobbe
index by asking your local gas sup-
ply utility or LPG supplier.
2.
Convert the burner for operation
with LPG (see page 15).
3.
Record the gas type in the service
report on page 129.
Wobbe index ranges
Gas type
Wobbe index range
kWh/m
3
MJ/m
3
Delivered condition
Natural gas E
or
12.0 to 16.1
43.2 to 58.0
Natural gas LL
10.0 to 13.1
36.0 to 47.2
After conversion
LPG P
20.3 to 21.3
72.9 to 76.8
Further details regarding the individual steps
(cont.)
14
Commissioning, inspection, maintenance
56
92
682
GB
Содержание Vitodens 333-F
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