Viessmann VITODENS 111-W Installation And Service Instructions Manual page 32

Commissioning, inspection, maintenance
Further details regarding the individual steps
X21 X7
X20
A
4 3 2 1
B
r
32
1. At terminal block A insert jumper
2. Switch ON the ON/OFF switch.
3. Turn both rotary selectors "tw" and
4. Refer to the following table for the
r
5. Within 2 s, turn rotary selector "tw"
6. Within 15 s, set rotary selector
7. The set correction factor is saved
8. Remove jumper B from terminal
(cont.)
B across terminals 3 and 4.
"tr" simultaneously to their central
positions.
The display shows "SERV".
correction factor required for the flue
system.
to the top left range.
The display shows "r", "A", and
the selected correction factor
flashes.
In the delivered condition, factor 0
has been set.
"tr" to the required correction fac-
tor.
when the value stops flashing, and
the control unit returns to standard
mode.
block A.