Viessmann Vitodens 333 Service Instructions Manual page 41

Code 1
(cont.)
Coding in the delivered condition
Slope A1/M2
d3:14 Heating curve slope =
1.4 (only for weather-
compensated control
units)
Level A1/M2
d4:0 Heating curve slope = 0
(only for weather-com-
pensated control units)
Code 2
Calling up code 2
Note
&
On weather-compensated control
units, codes are displayed as plain
text.
&
Codes, which are irrelevant (due to
the system equipment level or the
setting of other codes) will not be
displayed.
Press the following keys:
1. L + G simultaneously for
approx. 2s.
2. d
to confirm.
3. a/b
for the required coding
address; the address
flashes.
Overall summary
The coding addresses are grouped according to the following function areas.
The respective function area is shown on the display.
Possible change
d3:2 Heating curve slope ad-
to justable from 0.2 to 3.5
d3:35 (see page 32)
d4:–13 Heating curve level ad-
justable from –13 to 40
to
d4:40 (see page 32)
4. d
to confirm; the value
flashes.
5. a/b
for the selected value.
6. d
to confirm; the display
briefly shows
"accepted" (for
weather-compensated
control units); the
address flashes again.
7. a/b
for the selection of
further addresses.
8. L + G simultaneously for
approx. 1 s to terminate
code 2.
Coding
41