Setting The Maximum Heating Output; Performing An Actuator Test; Adjusting Pump Rate Of Integral Circulation Pump - Viessmann B0KA Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Function sequence and possible faults
Yes
Automatic calibration of
the combustion controller
For further details regarding faults, see "Troubleshoot-
ing".

Setting the maximum 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 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.

Adjusting pump rate of integral circulation pump

Operation of the integral circulation pump as heating circuit pump for heating circuit 1
The pump speed and consequently the pump rate are
controlled subject to the outside temperature and the
switching times for heating mode or reduced mode.
The max. speed for heating mode can be matched to
the existing heating system at the control unit.
38
Fault 62, 373
No
Fault 346, 377
3. OK
4. Use
5. OK
6. Use
7. OK
(cont.)
Ensure adequate heat trans-
fer. Reset the appliance.
Check gap between ionisa-
tion electrode and burner
gauze assembly.
Check flue system. Remove
flue gas recirculation if re-
quired.
Reset the appliance.
/ to select "7" for max. heating output.
/ to set the required value in % of rated
heating output. Delivered condition 100 % (100 %
= "HI" on the display).
Operating instructions