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Commissioning, inspection, maintenance
Measuring the CO
08. Check the CO
content at the upper and lower
2
heating output again.
If required, set the CO
lower heating output again.
Permissible CO
content
2
Gas type
Natural gas E
Wobbe index W
12.0 to 16.1 kWh/m
s
(0 °C; 1013.25 mbar)
Natural gas LL
Wobbe index W
10.0 to 13.1 kWh/m
s
(0 °C; 1013.25 mbar)
Measuring the CO content
Enter the actual value in the service report.
Measuring the flue gas temperature
Enter the actual value in the service report.
Checking the ionisation current
Note
The ionisation current can only be called up via the
programming unit of the burner control unit. It is not
possible to measure it with Testomatik-Gas or a multi-
meter.
Programming unit on the burner control unit
Status
Service
R
S
Fig. 9
Press the following buttons:
01. Press S for longer than 2 s;
02.
repeatedly until "5" is shown under "Service".
03. S to confirm, "5" is shown under "Status".
04.
repeatedly until "3" is shown under "Service".
18
content
(cont.)
2
content for the upper and
2
Heating output
Upper heating output (100 %)
3
Lower heating output (0 %)
Upper heating output (100 %)
3
Lower heating output (0 %)
flashes.
09. Enter the actual values into the report.
10. On the burner control unit, press S and
neously for longer than 2 s. Burner switches to
operating mode.
05. S to confirm, "3" is shown under "Status". Under
"Service" the ionisation current is shown during
≙
operation (e.g. 80
8.0
06. Activate emissions test mode.
Vitotronic control unit operating instructions
07. Read the ionisation current at the lower and upper
heating outputs.
Enter actual value into the report in the appendix.
Required value at lower heating output
800 kW
1000 kW
If the measured value is not within the value
range, check the ionisation electrode for damage
and check the fan pressure. See chapter "Check-
ing the fan pressure".
08. Press S for longer than 2 s;
09.
repeatedly until "5" is shown under "Service".
10. S to confirm, "5" is shown under "Status".
simulta-
CO
content, dry
2
8.9
0.1 %
±
7.9
0.1 %
±
8.8
0.1 %
±
7.8
0.1 %
±
A).
µ
>6.5
µ
>7
µ
flashes.
A
A
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