Matching The Control Unit To The Heating System - Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
7. Check the CO
2
actual value deviate from the afore-
mentioned ranges by more than 1 %,
implement steps from page 63.
Select higher/lower heating output
Weather-compensated control unit
Service menu
1. Press OK and å simultaneously for
approx. 4 s.
2. "Actuator test"
3. Select the lower heating output:
Select "Base load OFF". Then "Base
load ON" appears and the burner op-
erates at its lower heating output.
4. Select the upper heating output:
Select "Full load OFF". Then "Full
load ON" appears and the burner op-
erates at its upper heating output.
5. Ending output selection:
Press ä.

Matching the control unit to the heating system

The control unit must be adjusted subject
to the system equipment level.
■ To do this, select the relevant system
scheme (see the following diagrams).
■ Set the codes in conjunction with the
accessories fitted.
Accessories installation and
service instructions
64
content. Should the 8. After testing, press OK.
9. Enter actual values into the report.
Constant temperature control unit
Service menu
1. Press OK and å simultaneously for
approx. 4 s.
2. Select " " with Ú and confirm with
OK.
The display shows "I" and "ON" flash-
es.
3. Select the lower heating output:
Press OK, "ON" will be displayed con-
stantly.
4. Select the upper heating output:
Press ä.
5. Select "2" with Ú; "ON" flashes.
6. Press OK, "ON" will be displayed con-
stantly.
7. Ending output selection:
Press ä.
Note
Various system components are recog-
nised automatically by the control unit
and the relevant codes are adjusted
automatically.
For individual steps for coding, see
page 77.
(cont.)