Viessmann Vitotronic 100 GC1 Installation And Service Instructions Manual page 161

Coding 2
(cont.)
Coding in factory setting
General (cont.)
9A: 0 Connection to terminals 1 and 2 in plug aVD
(External mixing valve open) inactive (External mixing valve open) inactive
9b: 70 Set minimum supply temperature for external
Set minimum supply temperature for external
demand (input aVH) demand (input aVH)
70 ˚C / 158 ˚F
9C: 20 Monitoring LON participants 9C: 20 Monitoring LON participants
When there is no response from a participant, When there is no response from a participant,
values defaulted inside control unit continue to be
used for a further 20 min. Only then will a fault
message be triggered.
9d: 0 Without Input Module
0 to 10V
9F: 8 With mixing valve circuit:
Differential temperature 8 ˚C / 14.4 ˚F
Possible change
Contact affects:
9A: 1 No function
9A: 2 Mixing valve open
Mixing valve circuit M2
9A: 3 No function
9A: 4 Mixing valve open
Mixing valve circuit M3
9A: 5 No function
9A: 6 Mixing valve open
Mixing valve circuits M2 and M3
99: 7 No function
Input aVH blocked
9b: 0
Set temperature adjustable from 1 to 127 ˚C /
9b: 1
34 to 261 ˚F
to
9b:127
9C: 0 No monitoring
9C: 5 Time adjustable
to from 5 to 60 minutes
9C: 60
9d: 1 With Input Module 0 - 10V;
will be recognized automatically
9F: 0 Differential temperature adjustable from 0 to 40 ˚C/
to 0 to 72 ˚F
9F: 40
Coding – Vitotronic 300-K, MW1S
161