Viessmann Vitodens 300 Service Instructions Manual page 57

Code 2
(cont.)
Coding in Function mode
the as
delivered
condition
Address:
value
A8:1 * 1 Heating circuit M2
(mixer circuit) creates a
demand for the internal
circulation pump
A9:7 * 1 With pump idle per-
iod: Heating circuit
pump OFF in case of
set value modification
(by changing the oper-
ating mode or changing
the set room tempera-
ture)
b0:0 * 1 With remote control:
Heating mode/reduced
mode: Weather-com-
pensated
b2:8 With remote control unit
and for the heating cir-
cuit, heating with room
temperature hook-up
must be encoded:
Room influence factor
8 * 2
*1
Only for weather-compensated control units.
*2
Change the coding for the heating circuit without mixer A1 or for mixer circuit M2, if the
remote control unit affects that heating circuit.
Coding
change
Address:
value
A8:0
A9:0
A9:1
to
A9:15
b0:1
* 2
b0:2
b0:3
b2:0
b2:1
to
b2:64
Coding
Possible change
Heating circuit M2 (mixer
circuit) creates no
demand for the internal
circulation pump
* 1 Without pump idle per-
iod
With pump idle time,
adjustable from 1 to 15
Heating mode: Weather-
compensated
Reduced mode: With
room temperature hook-
up
Heating mode: With room
temperature hook-up
Reduced mode: Weather-
compensated
Heating mode/reduced
mode: With room tem-
perature hook-up
Without room influence
Room influence factor
adjustable from 1 to 64
57