Viessmann VITODENS 200-W Service Instructions Manual page 25

Further details regarding the individual steps
A
1. Connect a flue gas analyser at flue
gas aperture A on the boiler flue
connection.
2. Open the gas shut-off valve, start the
boiler and create a heat demand.
3. Select the lower output (see
page 25).
Select higher/lower output
Weather-compensated control unit
Service menu
1. Press OK and å simultaneously for
approx. 4 s.
2. "Actuator test"
3. Select the lower output:
Select "Base load ON" and confirm
with OK.
4. Select the upper output:
Select "Full load ON" and confirm
with OK.
5. Ending output selection:
Press ä.
Commissioning, inspection, maintenance
4. Check the CO
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 24.
5. Enter actual values into the report.
6. Select the upper output (see
page 25).
7. Check the CO
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 24.
8. After testing, press OK.
9. Enter actual values into the report.
Constant temperature control unit
Service menu
1. Press OK and å simultaneously for
approx. 4 s.
2. Select Ú " " and confirm with OK.
The display shows "I" and "on"
flashes.
3. Select the lower output:
Press OK, "on" will be displayed per-
manently.
4. Select the upper output:
Press ä.
5. Press Ú to select "2", "on" flashes.
6. Press OK, "on" will be displayed con-
stantly.
7. Ending output selection:
Press ä.
(cont.)
content. Should the
2
content. Should the
2
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