Viessmann VITODENS 343-F WS4A Installation And Service Instructions Manual page 70

Coding
Code 2
(cont.)
Coding
Coding in the delivered condition
System design
00 :2 System design 1:
1 heating circuit without
mixer A1, with DHW
heating
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 unit (see
page 112)
21:0 No service display
Burner
23:0 No time interval for
burner service
24:0 No "Service" display
28:0 No burner interval igni-
tion
70
Possible change
00 :4 System design 2, 5:
1 heating circuit with
mixer M2, with DHW
heating
00 :6 System design 3, 4:
1 heating circuit without
mixer A1; 1 heating cir-
cuit with mixer M2, with
DHW heating
06:20 Maximum limit of the boil-
to er water temperature
06:75 within the ranges de-
faulted by the compact
boiler
11:9 Access to the coding ad-
dresses for the para-
meters of the combustion
control unit enabled (see
page 112)
21:1 The number of hours run
to before the burner should
21:100 be serviced is adjustable
from 100 to 10000 hours
(each step represents
100 hours)
23:1 Interval adjustable from 1
to to 24 months
23:24
24:1 "Service" display (the ad-
dress is automatically set
and must be manually
reset after a service has
been carried out)
28:1 The burner is force-
started once every
24 hours