Viessmann VITODENS 242-F Installation And Service Instructions Manual page 114

Code 2
"Heating circuit ..."
Coding in the delivered condition
Heating mode/reduced
mode: Weather-compen-
sated
b2:8 Only for heating circuit
with mixer and remote
control, and operation
with room temperature
hook-up must be pro-
grammed for the heating
circuit:
Room influence factor 8
b5:0 Only for heating circuit
with mixer and remote
control:
Without room tempera-
ture-dependent heating
circuit pump logic func-
tion
Parameter ad-
dress b5:...
1
2
3
4
5
6
7
8
Coding in the delivered condition
C5:20 Electronic minimum flow
temperature limit 20 °C
(only in operation with
standard room tempera-
ture)
114
(cont.)
With heating circuit pump logic function:
Heating circuit pump "OFF"
RT > RT + 5 K
actual set
RT > RT + 4 K
actual set
RT > RT + 3 K
actual set
RT > RT + 2 K
actual set
RT > RT + 1 K
actual set
RT > RT
actual set
RT > RT – 1 K
actual set
RT > RT – 2 K
actual set
Possible change
b0:2 Heating mode: With room
temperature hook-up
Reduced mode: Weather-
compensated
b0:3 Heating mode/reduced
mode: With room tempera-
ture hook-up
b2:0 Without room influence
b2:1 Room influence factor ad-
to justable from 1 to 64. The
b2:64 higher the value, the great-
er the room influence.
b5:1 Heating circuit pump logic
to function, see the following
b5:8 table.
Heating circuit pump "ON"
RT < RT
actual
RT < RT
actual
RT < RT
actual
RT < RT
actual
RT < RT
actual
RT < RT
actual
RT < RT
actual
RT < RT
actual
Possible change
C5:1 Minimum limit adjustable
to from 1 to 127 °C (limited by
boiler-specific parameters)
+ 4 K
set
+ 3 K
set
+ 2 K
set
+ 1 K
set
set
– 1 K
set
– 2 K
set
– 3 K
set