Viessmann Vitodens 200 Service Manual page 55

Code 2
(cont.)
Coding in Function mode
the as
delivered
condition
Address:
value
Boiler circuit, mixer circuit
A4:0 * 1 With frost protection
A5:5 * 1 With heating circuit
pump logic function
(economy circuit): Heat-
ing circuit pump OFF, if
the outside temperature
(AT) is 1 K higher than
the set room tempera-
ture (RT
AT > RT
Parameter address
A5:...
1
2
3
4
5
6
*1
Only for weather-compensated control units
Coding
change
Address:
value
A4:1
A5:0
A5:1
to
A5:15
)
Set
+ 1 K
Set
With heating circuit pump logic function: Heating
circuit pump OFF, if
AT > RT + 5 K
Set
AT > RT + 4 K
Set
AT > RT + 3 K
Set
AT > RT + 2 K
Set
AT > RT + 1 K
Set
AT > RT
Set
Coding
Possible change
No frost protection,
adjustment only possible
if code "A3:-9" is
selected.
Note
With settings below 1 °C
there is a risk of pipes
outside the thermal insu-
lation envelope of the
house freezing-up. The
standby mode, in particu-
lar, should be observed,
e.g. during holidays.
Without heating circuit
pump logic function
With heating circuit pump
logic function: Heating
circuit pump OFF, if (see
the following table)
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