Viessmann Vitoligno 300-P Service Instructions For Contractors page 63

Code 2
(cont.)
Coding in the delivered condition
99:0 Connection at terminals 2
and 3 in plug aVD disa-
bled (external blocking/
external "Mixer close")
(see page 115)
9A:0 Connection at terminals 1
and 2 in plug aVD disa-
bled (external "Mixer
open") (see page 114)
9B:0 No default minimum flow
temperature
9C:20 Monitoring LON users:
When there is no
response from a user,
values defaulted by the
control unit are used after
20 min and a fault mes-
sage is issued
9D:0 Without function exten-
sion 0 - 10 V
9E:0 Without outside tempera-
ture sensor
Possible change
99:1 External "M close"
Heating circuit 1
99:2 External "Mixer close"
Heating circuit 2
99:3 External "Mixer close"
Heating circuits 2 and 3
99:4 External blocking
99:5 External blocking/external
"Mixer close"
Heating circuit 1
99:6 External blocking/external
"Mixer close"
Heating circuit 2
99:7 External blocking/external
"Mixer close"
Heating circuits 1 and 2
9A:1 External "Mixer open"
Heating circuit 1
9A:2 External "Mixer open"
Heating circuit 2
9A:3 External "Mixer open"
Heating circuits 1 and 2
9B:1 Set minimum flow temper-
to ature in case of external
9B:127 demand, adjustable from 1
to 127 °C (see page 114)
9C:0 No monitoring
9C:5 The time is adjustable from
to 5 to 60 min
9C:60
9D:1 With function extension;
automatic recognition
9E:1 With outside temperature
sensor; automatic recogni-
tion
Codes
63