Viessmann VITOTRONIC 050 - Page 43

43
Coding
Coding 2 (cont.)
Coding in the factory default setting Possible change
General (cont.)
8E : 4 Displaying and acknowledging faults:
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8E : 0 Only at the programming unit
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on the programming unit and remote con-
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8E : 1 No function
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8E : 2 No function
8E : 3 No function
90 : 128 Time constant for calculating the outdoor
temperature change 21.3 hours
90 : 0
to
90 : 199
Quick (low values) or slow (high values)
matching of the supply temperature to the
change in the outdoor temperature according
to the selected value;
1 increment = 10 minutes
91 : 0 Without changeover of the heating
programs
91 : 1 With changeover of the heating program
(connection via plug aVD)
92 : 180 Device recognition. Do not adjust. Will only be displayed, if 8A:176 has been encoded.
97 : 0 With communication module:
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97 : 1 Outside temperature is adopted from the BUS
9
7
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0
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:
outside temperature from the installed
sensor will be used
97 : 2 The outdoor temperature of the sensor
connected to the control unit will be used and
transmitted via the BUS
98 : 1 With LON communication module:
Viessmann system numbers (in conjunction
with monitoring of several systems)
98 : 2
to
98 : 5
System number adjustable from 1 to 5
99 : 0 Connection at terminals 2 and 3 in plug aVD
(External mixing valve close) inactive
99 : 1 External mixing valve close active
(
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99 : 2
to
99 : 15
No function
9A : 0 Connection at terminals 1 and 2 in plug aVD
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9A : 1 External mixing valve open active
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inactive
9A : 2
to
9A : 15
No function
9C : 20 Monitoring of LON participants
When there is no response from a
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9C : 0 No monitoring
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control unit continue to be used for a
further 20 min. Only then will a fault
message be triggered.
9C : 1
to
9C : 60
Time adjustable
from 1 to 60 minutes
9d : 0 Without input extension module 0-10V 9d : 1 With input extension module; automatic
recognition
9F : 8 Differential temperature 8 K ; this is added
to the required supply temperature
05 : 0
to
05 : 40
Differential temperature adjustable from 0 to
40 K
5285 967 v1.2