Viessmann VITODENS 200-W Service Instructions Manual page 26

Commissioning, inspection, maintenance
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 26).
4. Check the CO content. Should the
2
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 25.
5. Enter actual values into the service
report.
6. Select the upper output (see
page 26).
7. Check the CO content. Should the
2
actual value deviate from the above
ranges by more than 1 %, implement
steps from page 25.
8. After testing, press OK.
9. Enter actual values into the service
report.
26
(cont.)
Selecting the upper/lower output for
weather-compensated control units:
1. Press OK and å simultaneously
for approx. 4 s.
2. "Actuator test"
3. Select the lower output:
Select "Start base load" and confirm
with OK.
4. Select the upper output:
Select "Start full load" and confirm
with OK.
Selecting the upper/lower output for
constant temperature control units:
1. Press OK and å simultaneously
for approx. 4 s.
"Ü" flashes on the display.
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. Select "2" with Ú and confirm with
OK.
6. Exit output selection with ä.