Viessmann Vitodens 222-F B2TA Installation And Service Instructions Manual page 85

"Heating circuit ..."/group 5
Coding in the delivered condition
Min. flow temperature heating circuit
C5:20 Electronic minimum flow
temperature limit 20 °C
(only in operation with
standard room tempera-
ture; only for weather-
compensated control
units)
Max. flow temperature heating circuit
C6:74 Electronic maximum flow
temperature limit 74 °C
(only for weather-com-
pensated control units)
Heating program - changeover
d5:0 With external heating pro-
gram changeover (ob-
serve setting for coding
addresses "3A", "3b" and
"3C" in group "Gener-
al").
Heating program
switches to "Constant
central heating with re-
duced room tempera-
ture" or "Standby mode"
(subject to the settings of
the set reduced room
temperature) (only for
weather-compensated
control units).
Ext. heating program changeover to heating circuit
d8:0 With extension EA1:
No heating program
changeover.
(cont.)
Possible change
C5:1 Minimum limit adjustable
to from 1 to 127 °C (limited by
C5:127 boiler-specific parameters)
C6:10 Maximum limit adjustable
to from 10 to 127 °C (limited
C6:127 by boiler-specific parame-
ters)
d5:1 The heating program
changes to "Constant op-
eration with standard room
temperature".
d8:1 Heating program change-
over via input DE1.
d8:2 Heating program change-
over via input DE2.
d8:3 Heating program change-
over via input DE3.
Code 1
85