Matching The Control Unit To The Heating System - Viessmann Vitodens 333-F Service Instructions Manual

Commissioning, inspection, maintenance
Further details regarding the individual steps
Weather-compensated control
unit:
K + d press simultaneously:
"Relay test" and then
"Base load" is shown.
4. Check the CO content. Should the
2
actual value deviate from the
above ranges by more than 1%,
implement steps from page 31.
5. Enter actual values into the service
report.
6. Adjust the upper output.
Constant temperature control
unit:
a press:
"2" is shown.

Matching the control unit to the heating system

Note
Subject to the equipment level, the control unit must be matched to the system.
Various 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 46.
32
(cont.)
Weather-compensated control
unit:
a press:
"Full load" is shown.
7. Check the CO content. Should the
2
actual value deviate from the
above ranges by more than 1%,
implement steps from page 31.
8. After testing, press d.
9. Enter actual values into the service
report.