Viessmann VITOTRONIC 200 Installation And Service Instructions Manual page 86

Coding 2 Vitotronic 300-K
"General" Group
Coding in the factory set condition
"Connection at terminals 2 and 3 in plug avD"
99:0
Connection at terminals 2 and 3 in plug avD
disabled (external blocking/ external "Mixing
valve close") (see page 24)
"Connection at terminals 1 and 2 in plug avD"
9a:0
Connection at terminals 1 and 2 in plug avD
disabled (external "Mixing valve open")
(see page 24)
"Set supply temperature for external demand"
9b:70 Set supply temperature for external demand
158°F (70°C)
"With LON communication module: Monitoring LON participants"
9c:20 With LON communication module:
Monitoring LON participants
If there is no response from a participant after
20 min, the values specified inside the control unit
are used. Only then will a fault message be issued
"Differential temperature"
9f:8 Differential temperature 8 K, only in connection
with heating circuit with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
86
(continued)
Vitotronic 200, HO1B and 300-K, MW2C Installation/Service
Possible change
99:1 No function
99:2 External "mixing valve close" Heating circuit
with mixing valve M2 (heating circuit 2).
99:3 No function
99:4 External "mixing valve close" Heating circuit
with mixing valve M3 (heating circuit 3).
99:5 No function
99:6 External "mixing valve close" Heating circuits
with mixing valve M2 (heating circuit 2) and M3
(heating circuit 3).
99:7 No function
99:8 External blocking
99:9 No function
99:10 External blocking/external "mixing valve close"
Heating circuits with mixing valve M2 (heating
circuit 2).
99:11 No function
99:12 External blocking/external "mixing valve close"
Heating circuit with mixing valve M3 (heating
circuit 3).
99:13 No function
99:14 External blocking/external "mixing valve close"
Heating circuits with mixing valve M2 (heating
circuit 2) and M3 (heating circuit 3).
99:15 No function
9a:1 No function
9a:2 External "mixing valve open" Heating circuit
with mixing valve M2 (heating circuit 2).
9a:3 No function
9a:4 External "mixing valve open" Heating circuit
with mixing valve M3 (heating circuit 3).
9a:5 No function
9a:6 External "mixing valve open" Heating circuits
with mixing valve M2 (heating circuit 2) and M3
(heating circuit 3).
9a:7 No function
9b:0 Set supply temperature for external demand
to adjustable from 32 to 260°F (0 to 127°C)
9b:127 (limited by boiler-specific coding).
9c:0 No monitoring
9c:5 Time adjustable from 5 to 60 min.
to
9c:60
9f:0 Differential temperature adjustable from
to 0 to 40 K
9f:40