Viessmann VITODENS 333 Service Instructions Manual page 55

Code 2
(cont.)
Parameter address
A5:...
7
to
15
Coding in Function mode
the as
delivered
condition
Address:
value
Boiler circuit, mixer circuit
* 1
A6:36 Extended economy
circuit inactive
*1
Only for weather-compensated control unit.
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
Coding
Possible change
Extended economy cir-
cuit active, i.e. the burner
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 ºC plus 1 ºC. This
value is based on the
adjusted outside tem-
perature, comprising the
actual outside tempera-
ture and a time constant,
which takes the cooling
down of an average
building into considera-
tion.
55