Viessmann Vitocrossal 300 Service Instructions For Contractors page 63

Heating circuit 1, heating circuit 2, heating...
Coding in the delivered condition
Mixer eco function
A7:0 Without mixer economy
function (only for heating
circuits with mixer)
Pump idle time transition red. mode
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
Weather-compensated/room temperature hook-up
b0:0 With remote control:
Heating mode/reduced
operation: weather-com-
pensated (change code
only for the heating circuit
with mixer)
Summer eco function room temperature
b5:0 With remote control: no
room temperature-
dependent heating circuit
pump logic function
(change code only for
heating circuit with
mixer)
Possible change
A7:1 With mixer economy func-
tion (extended heating cir-
cuit pump logic):
Heating circuit pump also
"Off":
■ If the mixer has been
attempting to close for
longer than 20 min.
Heating circuit pump "On":
■ If the mixer changes to
control function
■ If there is a risk of frost
A9:0 Without pump idle time
A9:1 With pump idle time;
to adjustable from 1 to 15
A9:15
b0:1 Heating mode: weather-
compensated
Reduced mode: with room
temperature hook-up
b0:2 Heating mode: with room
temperature hook-up
Reduced mode: weather-
compensated
b0:3 Heating mode/reduced
mode: with room tempera-
ture hook-up
b5:1 Heating circuit pump logic
to function, see the following
b5:8 table:
Code 1
(cont.)
63