Viessmann Vitodens 200 Service Instructions Manual page 52
Type wb2a, 8.8 to 20.0 kw wall mounted gas fired condensing boiler natural gas and lpg version
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Also See for Vitodens 200:
- Technical manual (180 pages) ,
- Installation instructions manual (148 pages) ,
- Service manual (132 pages)
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Coding
Code 2
(cont.)
Coding in the delivered condition
A9:7
With pump idle time:
Heating circuit pump
"OFF" if the set value
changes through a
change in operating
mode or through a
change in the set room
temperature (only for
weather-compensated
control units)
b0:0
With remote control:
Heating mode/reduced
mode: weather-com-
pensated (only for
weather-compensated
control units; change
the coding only for the
heating circuit with
mixer M2)
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
(only for weather-com-
pensated control units;
change the coding only
for the heating circuit
with mixer M2)
b5:0
With remote control: No
room temperature-de-
pendent heating circuit
pump logic function
(only for weather-com-
pensated control units;
change the coding only
for the heating circuit
with mixer M2)
52
Possible change
A9:0
Without pump idle time
A9:1
With pump idle time, ad-
to
justable 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 tem-
perature hook-up
b2:0
Without room influence
b2:1
Room influence factor
to
adjustable from 1 to 64
b2:64
b5:1
Heating circuit pump
to
logic function; see the fol-
b5:8
lowing table
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