Emissions Test; Replacing The Battery In The Control Unit; Confirming Maintenance - Viessmann Vitoligno 300-C Installation And Service Instructions Manual

Commissioning, inspection, maintenance

Emissions test

After commissioning, an emissions test must be car-
ried out.
Carry out repeat emissions tests in the manner descri-
bed.
Preparation
■ Clean flue gas routes and chimney at least 3 days
before testing.
If the Lambda probe shows less than 20 % O
■
cold, clean the Lambda probe and calibrate.
■ Operate the boiler for at least 24 hours between
cleaning and testing.
■ Allow boiler to cool down before testing.
Test point
For the test point, please note:
Measuring head positioned in core flow
■
■ Not directly next to the flue gas fan
■ Not upstream of a flue bend
■ If installed in the test route: Tightly close the chimney
damper/draught stabiliser.
Testing
For consistent test results, continuous heating opera-
tion is essential. Avoid modulating heating operation.
In test mode, the boiler heats with a constant output
until the maximum boiler water temperature has been
reached.
1. In order to avoid modulating heating operation,
heat transfer must be ensured.
2. Recommendation:
■ Start the boiler and heat for approx. 45 minutes
■ Boiler water temperature
3. In the standard menu, activate
mode".
The display shows "Preparation". The boiler
heats until load operation.
"Test active" appears as soon as constant heating
operation has been reached.

Replacing the battery in the control unit

Battery
■ For function and type, see page 112.
■ For installation position, see page 165.

Confirming maintenance

Perform "Maintenance reset" after servicing.
76
when
2
60 °C
≥
/ for "Test
| ~
Note
For "Cleaning the Lambda probe", see page 67.
For "Calibrating the Lambda probe", see page 115.
Calming stretch upstream of the test connector:
■
Total 3 x of the flue pipe
7
– To the last pipe bend: Min. 2 x
– To the flue outlet: Min. 1 x
■ Calming stretch downstream of the test connector:
At least 1 to 2 x of the flue pipe
7
4. Carry out emissions test.
5. Confirm "Terminate" with
test manually.
Note
Test mode is automatically terminated when the
test duration has passed or the maximum tempera-
ture has been reached. The boiler subsequently
switches to control mode.
On the menu point "Test mode":
"Information": Display of temperatures, O
■
etc.
■ "Test duration": Set time and confirm with "OK".
Test duration then begins afresh. When the boiler
starts, the test duration is set to 60 minutes.
7
7
to end the emissions
d
value,
2