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

Commissioning, inspection, maintenance
Further details regarding the individual steps
8. After testing, press OK.
9. Enter actual values into the service
report.
Selecting the upper/lower output for
weather-compensated control units:
1. Press OK and simultaneously for
approx. 4 s.
2. "Actuator test"
3. Select the lower output:
Select "Base load" "ON" and con-
firm with OK.
4. Select the upper output:
Select "Full load" "ON" and confirm
with OK.

Matching the control unit to the heating system

Subject to the equipment level, the control unit must be matched to the system. Var-
ious system components are recognised automatically by the control unit and the
relevant codes are adjusted automatically.
■ For the selection of an appropriate design, see the following diagrams.
■ For coding steps, see page 62.
48
(cont.)
Selecting the upper/lower output for
constant temperature control units:
1. Press OK and simultaneously for
approx. 4 s.
" " flashes on the display.
2. Select " " and confirm with OK.
The display shows "I".
3. Select the lower output:
Press OK.
4. Select the upper output:
Press OK, select "2" with
firm with OK.
and con-