Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 113

Code 2
Calling up code 2
!
Please note
Incorrect settings at "Coding level 2" may result
in damage to the appliance and the heating sys-
tem.
Follow instructions.
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 sys-
tem equipment level or the setting of other codes,
are not displayed.
Press the following keys:
1. + Simultaneously for approx. 4 s
d
å
The "Service" menu appears.
2. + Simultaneously for approx. 4 s
d
ä
"Code 2" appears in the "Service"
menu.
3. / For "Code 2".
| ~
Overview of coding level 2
The coding addresses are displayed in groups, subject
to system configuration:
"General"
■
See page 113
■ "Boiler"
See page 114
■ "Charging"
See page 116
General
Coding
Coding in the delivered condition
Fault message output delay
80:6 Minimum duration of fault before a
fault message is issued.
6 increments
Automatic summer/wintertime changeover
81:1 Automatic summer/wintertime
changeover
Outside temperature time constant
90:128 Time constant for calculating the
adjusted outside temperature
Time constant 128 corresponds to
approx. 21.5 hours.
10.
11.
12.
■
■
■
Possible change
80:0
to
≙
30 seconds 80:199
81:0
90:1
to
90:199
4. To confirm
d
5. / For the required group
| ~
6. To confirm
d
7. / For "Heating": To select "Heating cir-
Ù Ú
cuit 1" (HC1), "Heating circuit 2"
(HC2), "Heating circuit 3" (HC3) or
"Heating circuit 4" (HC4), if installed.
8. / For the required coding address
| ~
9. To confirm
d
/ For the selected value
| ~
To confirm
d
"Adopted" appears briefly on the dis-
play.
Exit the service menu
ä
"Buffer"
See page 117
"Heating"
See page 117
"DHW"
See page 119
1 increment
Adjustable value from 0 to 995 sec-
onds.
Manual summer/wintertime change-
over
Flow temperature is adjusted when
the outside temperature changes
Rapid adjustment: Low set value
■
Slow adjustment: High set value
■
1 increment ≙ 10 minutes
Codes
≙
5 seconds.
113