Viessmann Vitodens 333 Service Instructions Manual page 42

Coding
Code 2
(cont.)
The areas are scanned in the following sequence with a/b:
Function area
System design
Boiler/burner
DHW
General
Heating circuit A1 (heating circuit without
mixer)
Heating circuit M2 (heating circuit with
mixer)
Note
For heating systems with one heating circuit without mixer and one heating cir-
cuit with mixer, initially the possible coding addresses "A0" to "Fb" are scrolled
for the heating circuit without mixer A1 and then those for the heating circuit
with mixer M2.
Coding
Coding in the delivered condition
System designs
00:2 System version 1:
1 heating circuit without
mixer A1, with DHW
heating
Boiler/burner
06:... Maximum limit of the
boiler water tempera-
ture, defaulted in °C by
the boiler coding card
1E:0 Operation with natural
gas
21:0 No burner maintenance
indication
42
Coding addresses
00
06 to 54
56 to 73
76 to 9F
A0 to Fb
A0 to Fb
Possible change
00:4 System version 2, 5:
1 heating circuit with
mixer M2, with DHW
heating
00:6 System version 3, 4:
1 heating circuit without
mixer A1 and 1 heating
circuit with mixer M2, with
DHW heating
06:20 Maximum limit of the boil-
to er water temperature
06:127 within the ranges de-
faulted by the boiler
1E:1 Operation with LPG
21:1 The number of hours to
to run before the burner
21:9999 should be serviced is ad-
justable from 1 to 9999 h