Viessmann VITODENS 300 Service Instructions Manual page 56

Coding
Code 2
(cont.)
Coding in the delivered condition
A9:7 * 1 With pump idle time:
Heating circuit pump
OFF in case the set
value is changed (by
changing the operating
mode or the set room
temperature)
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 influencing factor
*
8 2
b5:0 * 1 With remote control:
Without room tempera-
ture-dependent heating
circuit pump logic func-
*
tion 2
Parameter ad- With heating circuit pump logic function: Heating cir-
dress b5:... cuit pump OFF, if
1: enabled RT
2: enabled RT
*1
Only for weather-compensated control units.
*2
Change the code for the heating circuit without mixer A1 or for the mixer circuit M2 only,
if the remote control unit affects that heating circuit.
56
Possible change
A9:0
A9:1
to
A9:15
b0:1
*
2
b0:2
b0:3
b2:0
b2:1
to
b2:64
b5:1
to
b5:8
> RT + 5 K; disabled RT
actual set
> RT + 4 K; disabled RT
actual set
* 1 Without pump idle time
With pump idle time, ad-
justable 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
Heating circuit pump
logic function; see the fol-
lowing table
< RT + 4 K
actual set
< RT + 3 K
actual set