Viessmann Vitoligno 300-P Service Instructions For Contractors page 66

Codes
Code 2
(cont.)
Coding in the delivered condition
A7:0 Without mixer economy
function
A9:7 With pump idle time:
Heating circuit pump
"OFF" in case of set value
modification by changing
the operating mode or
changing the set room
temperature
AA:2 With output reduction
(reduced heat transfer
through closing the
mixer)
B0:0 With remote control:
Heating mode/reduced
mode: weather-compen-
sated
B2:8 With remote control unit
and for the heating circuit,
operation with room tem-
perature hook-up must be
programmed:
Room influence factor 8
B5:5 With remote control:
With room temperature-
dependent heating circuit
pump logic function
BB:1 Buffer heating priority
66
Possible change
A7:1 With mixer economy func-
tion (extended heating cir-
cuit pump logic) (see
page 48)
A9:0 Without pump idle time
A9:1 Pump idle time adjustable
to from 1 to 15
A9:15
AA:0 Without output reduction
AA:1 No function
B0:1 Heating mode: weather-
compensated
Reduc. mode: with room
temperature hook-up
B0:2 Heating mode: with room
temperature hook-up
Reduc. mode: weather-
compensated
B0:3 Heating mode/reduced
mode: with room tempera-
ture hook-up
B2:0 Without room influence
B2:1 Room influence factor
to adjustable from 1 to 31
B2:31
B5:0 Without room temperature-
dependent heating circuit
pump logic function
B5:1 Heating circuit pump logic
to function, see the table on
B5:8 page 48:
BB:0 No buffer heating priority