Emissions Test Mode - Viessmann VITODENS Operating Instructions Manual

Emissions test mode

Emissions test mode for testing flue gas
with briefly raised boiler water tempera-
ture.
Emissions test mode should only be acti-
vated by your flue gas inspector during
the annual inspection.
Extended menu
1.
2. "Test mode"
Should the current flow rate be insuf-
ficient (only for boilers with flow
meters), the message "Check flow
rate" appears and symbol Ñ rotates.
Ensure adequate heat transfer (e.g.
open radiator valves).
3. "Activate?" "Yes"
"Flue gas test ON"
Test mode
Boiler temperature
Terminate with
The following functions are activated:
■ The burner is switched on (the dis-
play shows
Note
Burner start-up can be delayed,
e.g. due to fuel oil preheating.
■ The pumps are started.
■ The mixers remain set to the control
function.
■ The temperature controller regu-
lates the boiler water temperature.
62°C
OK
).
Emissions test mode
Note
The flue gas inspector can also activate
emissions test mode if the controls are
locked out by your heating contractor.
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