Viessmann Vitodens 200 Service Instructions Manual page 53

Code 2
(cont.)
Parameter ad- With heating circuit pump logic function: Heating cir-
dress b5:... cuit pump OFF, if
1: enabled RT
2: enabled RT
3: enabled RT
4: enabled RT
5: enabled RT
6: enabled RT
7: enabled RT
8: enabled RT
Coding in the delivered condition
Boiler circuit, mixer circuit
C5:20 Electronic minimum
flow temperature limit
20 °C (only for weather-
compensated control
units)
C6:74 Electronic maximum
flow temperature limit
74 °C (only for weather-
compensated control
units)
d3:14 Heating curve slope =
1.4 (only for weather-
compensated control
units)
d4:0 Heating curve level = 0
(only for weather-com-
pensated control units)
d5:0 The external heating
program changeover al-
ters the heating pro-
gram to "Constant
operation with reduced
room temperature"
(only for weather-com-
pensated control units)
> RT + 5 K; disabled RT
actual set
> RT + 4 K; disabled RT
actual set
> RT + 3 K; disabled RT
actual set
> RT + 2 K; disabled RT
actual set
> RT + 1 K; disabled RT
actual set
> RT ; disabled RT
actual set
> RT - 1 K; disabled RT
actual set
> RT - 2 K; disabled RT
actual set
Possible change
C5:1
to
C5:127
C6:10
to
C6:127
d3:2
to
d3:35
d4: 13
to
d4:40
d5:1
Coding
< RT + 4 K
actual set
< RT + 3 K
actual set
< RT + 2 K
actual set
< RT + 1 K
actual set
< RT
actual set
< RT - 1 K
actual set
< RT - 2 K
actual set
< RT - 3 K
actual set
Minimum limit adjustable
from 1 to 127 °C (limited
by the boiler coding card)
Maximum limit adjustable
from 10 to 127 °C (limited
by the boiler coding card)
Heating curve slope ad-
justable from 0.2 to 3.5
(see page 28)
Heating curve level ad-
justable from 13 to 40
(see page 28)
The external heating pro-
gram changeover
changes the heating pro-
gram to "Constant central
heating with standard
room temperature"
53