Viessmann VITOTRONIC 300 Operating Instructions Manual page 40

Emissions test mode
Emissions test mode
Emissions test mode should only be activated by your
flue gas inspector during the annual inspection.
Emissions test mode is enabled for flue gas measure-
ment with temporarily increased boiler water tempera-
ture.
The following functions are activated:
■ The burner is switched on. "Test in progress"
appears on the display
The pumps are started.
■
Activating emissions test mode
Tap the following on-screen buttons:
1. If required, for the home screen
2. for the "Main menu"
Ending emissions test mode
You have 2 options for ending emissions test mode:
■ Tap .
or
■ Emissions test mode ends automatically after
60 minutes.
40
■ The mixers remain set to the control function.
■ The burner is switched off when the maximum tem-
perature set at the control unit is reached.
Note
Ensure that enough heat is being drawn during emis-
sions test mode.
3. "Test mode"
4. to confirm