Viessmann VITODENS 242-F Installation And Service Instructions Manual page 93

"Heating circuit ..."
Coding in the delivered condition
Economy function room temperature
b5:0 Only for heating circuit
with mixer and remote
control:
Without room tempera-
ture-dependent heating
circuit pump logic func-
tion
Parameter ad- With heating circuit pump logic function:
dress b5:... Heating circuit pump "OFF"
1 RT
2 RT
3 RT
4 RT
5 RT
6 RT
7 RT
8 RT
Coding in the delivered condition
Min. flow temperature heating circuit
C5:20 Electronic minimum flow
temperature limit 20 °C
(only in operation with
standard room tempera-
ture)
Max. flow temperature heating circuit
C6:74 Electronic maximum flow
temperature limit set to
74 °C
(cont.)
> RT + 5 K
actual set
> 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
Possible change
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
C5:127 boiler-specific parameters)
C6:10 Maximum limit adjustable
to from 10 to 127 °C (limited
C6:127 by boiler-specific parame-
ters)
Code 1
+ 4 K
set
+ 3 K
set
+ 2 K
set
+ 1 K
set
set
– 1 K
set
– 2 K
set
– 3 K
set
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