Viessmann Vitodens 333 Service Instructions Manual page 25

Further details regarding the individual steps
5. Record the actual value on
page 117 of the commissioning/
service report.
6. Select the upper rated output.
Constant temperature control
unit:
Press K + d simultaneously:
"1" is shown.
Press a:
"2" is shown.
Weather–compensated control
unit:
Press K + d simultaneously:
"Relay test" is
shown.
Press a:
"Full load" is
shown.
Initial start-up, inspection, maintenance
(cont.)
7. Check the CO content. If the value
2
lies outside the above range, take
the measures listed on page 24.
8. After testing, press d.
9. Record the actual value on
page 117 of the commissioning/
service report.
25