Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 90

Coding
Coding 2
Calling up code 2
Note: At coding level 2, all codes are accessible,

including the codes at coding level 1.
Codes that are not assigned, due to the heating

system equipment level or the setting of other
codes, are not displayed.
General
Coding in the factory set condition
Fault message output delay
80:6
Automatic summer/wintertime changeover
81:1
Outdoor temperature time constant
90:128
Outdoor temperature offset
92:0
90
Minimum fault duration
of 30 sec before a fault
message is issued.
Automatic summer/
wintertime changeover
Time constant for
calculating the adjusted
outdoor temperature 21.5 h
No outdoor temperature
correction.
Press the following keys:
1. d + å simultaneously for approx. 4 sec.
The "Service" menu appears.
2. ä + d simultaneously for approx. 4 sec.
"Code 2" appears in the "Service" menu.
3. |/~ for "Code 2".
4. d to confirm.
5. |/~ for the required group.
6. d to confirm.
Ù/Ú
7. for "Heating": to select "Heating circuit 1" (HC1),
"Heating circuit 2" (HC2), "Heating circuit 3" (HC3)
or "Heating circuit 4" (HC4), if installed.
8. |/~ for the required coding address.
9. d to confirm.
10. |/~ for the required value.
11. d to confirm. "Adopted" appears briefly in the
display.
12. ä Exit the service menu.
Overview
The coding addresses are displayed in groups, subject
to system configuration:
"General" See page 90

"Boiler" See page 91

"Charging" See page 93

"Buffer tank" See page 93

"Heating" See page 93

"DHW" See page 94

Possible change
80:0 Adjustable from 0 sec. to 995 sec.
to 1 step ≙ 5 sec.
80:199
81:0 Manual summer/wintertime
changeover
90:0 Fast (low values) or slow (high values)
to matching of the supply temperature,
90:199 subject to the set value according
to changes in outdoor temperature;
1 step ≙ 10 minutes
92:- 10 Correction of the outdoor temperature
to by the value set in °C.
92:10
Vitoligno 300-C Installation/Service