Viessmann VITODENS 300 WB3A, Service Instructions Manual

Page: 74 / 148

Coding in
the as
delivered
condition
Address:
value Function mode Coding
change
Address:
value Possible change
b5:0
* 1
With remote control:
Without room tempera-
ture-dependent heating
circuit pump logic func-
tion
* 2
b5:1
to
b5:8 Heating circuit pump
logic function - see the
following table
Parameter
address b5:... With heating circuit pump logic function: Heating cir-
cuit pump OFF, if
1: active RT
Actual
> RT
Set
+ 5 K; passive RT
Actual
< RT
Set
+ 4 K
2: active RT
Actual
> RT
Set
+ 4 K; passive RT
Actual
< RT
Set
+ 3 K
3: active RT
Actual
> RT
Set
+ 3 K; passive RT
Actual
< RT
Set
+ 2 K
4: active RT
Actual
> RT
Set
+ 2 K; passive RT
Actual
< RT
Set
+ 1 K
5: active RT
Actual
> RT
Set
+ 1 K; passive RT
Actual
< RT
Set
6: active RT
Actual
> RT
Set
; passive RT
Actual
< RT
Set
- 1 K
7: active RT
Actual
> RT
Set
- 1 K; passive RT
Actual
< RT
Set
- 2 K
8: active RT
Actual
> RT
Set
- 2 K; passive RT
Actual
< RT
Set
- 3 K
Coding in
the as
delivered
condition
Address:
value Function mode Coding
change
Address:
value Possible change
Boiler circuit, mixer circuit
C5:20
* 1
Electronic limit of the
minimum flow tempera-
ture: 20 °C
C5:1
to
C5:127 Minimum limit adjustable
from 1 to 127 °C
C6:74
* 1
Electronic limit of the
maximum flow tempera-
ture: 74 °C
C6:0
to
C6:127 Maximum limit adjustable
from 1 to 127 °C
d3:14
* 1
Heating curve slope =
1.4
d3:2
to Heating curve slope
adjustable from 0.2 to 3.5
Code 2
(cont.)
58
Coding
56
92
550
GB
*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.