Setting The Max. Heating Output - Viessmann VITODENS 222-F Installation And Service Instructions Manual

Function sequence and possible faults
Yes
Ionisation current builds
Yes
Burner in operation
Yes
Automatic calibration of
the combustion controller
For further details regarding faults, see page "Trouble-
shooting".

Setting the max. heating output

A limit can be set on the maximum heating output for
heating mode. The limit is set via the modulation
range.
Note
The flow rate must be checked before the max. heat-
ing output can be adjusted. Ensure adequate heat
transfer.
Tap the following buttons:
1. and OK – press simultaneously for approx. 4 s,
then release.
2. Use / to select "System configuration".
No
Fault F.369, F.380
No Shuts down below the set
boiler water temperature and
restarts immediately.
Fault F.62, F.373
No
Fault F.346, F.375, F.377
3. OK
4. Use
5. OK
6. Use
7. OK
8. Use
9. OK
Commissioning, inspection, maintenance
(cont.)
Check distance of ionisation
electrode on burner gauze
assembly.
Purge the gas line.
Check the flue system for
tightness (flue gas recircula-
tion). Check gas flow pres-
sure.
Ensure adequate heat trans-
fer. Reset device.
Check gap between ionisa-
tion electrode and burner
gauze assembly.
Check flue system. Remove
flue gas recirculation if re-
quired.
Reset device.
/ to select "Boiler".
/ to select parameter 596.0 "Maximum
heating output".
/ to set the required value in % of rated
heating output. Delivered condition 100 %.
Operating instructions
37