Viessmann Vitoligno 300-H Installation And Service Instructions For Contractors page 105

Code 1
(cont.)
Coding in the delivered condition
Flush collector sensor
77:0 Flush time in seconds
Note
Flushing is activated in regular in-
tervals for the selected flush time.
Only enabled if collector tempera-
ture
≥
Code 2
Calling up code 2
!
Please note
An operating error at the "coding levels" may
result in damage to the boiler and the heating
system.
Follow the instructions in chapter "Codes".
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 buttons:
1. d +
å
2. +
d
ä
3. /
| ~
Overview of coding level 2
The coding addresses are displayed in groups, subject to system configuration:
Service function
"General"
"Boiler"
"Charging"
"Heating"
"DHW"
outside temperature
simultaneously for approx.
4 s.
The "Service" menu
appears.
simultaneously for approx.
4 s.
"Code 2" appears in the
"Service" menu.
for "Code 2".
Possible change
77:1 Setting range in seconds
to
77:120
4.
d
5. /
| ~
6.
d
7. / for "Heating" for: "Heating circuit 1" (HC1),
Ù Ú
8. /
| ~
9. d
10. /
| ~
11.
d
12.
ä
See page
106
106
108
109
111
Codes
to confirm.
for the required group.
to confirm.
"Heating circuit 2" (HC2),
"Heating circuit 3" (HC3)
or "Heating circuit 4"
(HC4), if installed.
for the required coding
address.
to confirm.
for the required value.
to confirm.
"Adopted" appears briefly
on the display.
until the default display is
shown.
105