Viessmann VITODENS 300 Service Instructions Manual page 44

Coding
Code 2
(cont.)
Coding in the delivered condition
Boiler/burner
06:... Maximum limit of the
boiler water tempera-
ture, defaulted by the
boiler coding card
11: 9 No access to the coding
addresses for the para-
meters of the combus-
tion control (see
page 91)
21:0 No burner maintenance
indication
23:0 No time interval for
burner maintenance
24:0 No "Maintenance" dis-
play
25:0 * 1 No recognition of out-
side temperature sen-
sor or fault monitoring
(only in
28:0 No burner interval igni-
tion
2E:0 Without external exten-
sion
2F:0 Venting program/filling
program inactive
30:1 Internal variable speed
circulation pump (auto-
matic adjustment)
*1
Only for constant temperature control units.
44
Possible change
06:20
to
06:127
11:9
21:1
to
21:100
23:1
to
23:24
24:1
25:1
)
28:1
2E:1
2F:1
2F:2
30:0
Maximum limit of the boil-
er water temperature
within the ranges de-
faulted by the boiler
Access to the coding ad-
dresses for the para-
meters of the combustion
control enabled (see
page 91)
The number of hours run
before the burner should
be serviced is adjustable
from 100 to 10000 hours
(each step represents
100 hours)
Interval adjustable from 1
to 24 months
"Maintenance" display
(the address is automati-
cally set and must be
manually reset after a
service has been carried
out)
Outside temperature sen-
sor and fault monitoring
recognised
The burner is force-
started once every
5 hours
With external extension
(automatic adjustment on
connection)
Venting program disabled
Filling program enabled
Internal circulation pump
without variable speed
(e.g. temporarily for ser-
vice)