Viessmann Vitodens 333 Service Instructions Manual page 54

Coding
Code 2
(cont.)
Parameter address
A5:...
7
to
15
Coding in Function mode
the as de-
livered
condition
Address:
value
Boiler circuit, mixer circuit
* 1
A6:36 Extended economy
circuit disabled
*1
Only for weather-compensated control units.
54
With heating circuit pump logic function: Heating
circuit pump OFF, if
AT > RT - 1 K
Set
AT > RT -9 K
Set
Coding
change
Address:
value
A6:5
to
A6:35
Possible change
Extended economy cir-
cuit enabled, i.e. the bur-
ner and heating circuit
pump will be switched
OFF, and the mixer will
be closed at a variable
value, which is adjustable
between 5 and 35 °C plus
1 °C. This value is based
on the adjusted outside
temperature, comprising
the actual outside tem-
perature and a time con-
stant which takes the
cooling down of an aver-
age building into consid-
eration.