Setting The Max. Heating Output; Performing An Actuator Test - Viessmann VITODENS 111-W Installation And Service Instructions Manual

Commissioning, inspection, maintenance
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 "Troubleshoot-
ing".

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.
Tap the following buttons:
1. and OK simultaneously for approx. 4 s, then
release.
2. Use / to select "b.2" for system configura-
tion.

Performing an actuator test

The actuator test can only be set via the software tool.
44
No
Fault 369, 380
No Shuts down below the set
boiler water temperature and
restarts immediately.
Fault 62, 373
No
Fault 346, 377
3. OK
4. Use
5. OK
6. Use
7. OK
(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 the appliance.
Check gap between ionisa-
tion electrode and burner
gauze assembly.
Check the flue system. Re-
move flue gas recirculation if
necessary.
Reset the appliance.
/ to select "7" for max. heating output.
/ to set the required value in % of rated
heating output. Factory setting 100 %.
Operating instructions